Attch. 13 SBIWTP O&M Manual.pdf

OPERATIONS

INTERNATIONAL

NTERNATIONAL BOUNDARY

ATER COMMISSION

PERATIONS ANDPERATIONS AND

AINTENANCE MANUAL

OUTH BAY

NTERNATIONAL

ASTEWATER TREATMENT

PLANT

OLUME 1 OF 4

S

WASTEWATER

OLUME 1 OF 4

December 2010December 2010December 2010December 2010

1991199119911991----035035035035

PERATIONS AND MAINTENAN

MANUAL

NTERNATIONAL BOUNDARY & WATER COMMISSION

MANUAL

SOUTH BAY INTERNATIONAL

ASTEWATER TREATMENT PLA

VOLUME 1 OF 4VOLUME 1 OF 4

INTERNATIONAL BOUNDARY

AND

WATER COMMISSION

OPERATION AND MAINTENANCE

MANUAL

FOR THE

SOUTH BAY

INTERNATIONAL WASTEWATER TREATMENT PLANT

Volume 1 of 4

MALCOLM PIRNIE, INC.

1525 Faraday Avenue

Suite 290

Carlsbad, California 92008

(760) 602-3800

April 2011

1991-035-702

Table of Contents −i−

TABLE OF CONTENTS

Page

VOLUME 1

TABLE OF CONTENTS ................................................................................................ i

1. INTRODUCTION

Chapter 1 Table of Contents ..................................................................... 1-i

1.1 General .................................................................................................. 1.1-1

1.2 Purpose of Manual ................................................................................ 1.2-1

1.3 Plant Schematic ..................................................................................... 1.3-1

1.4 Site Layout ............................................................................................ 1.4-1

1.5 General Description of SBIWTP Processes .......................................... 1.5-1

1.5.1 Headworks ................................................................................ 1.5-1

1.5.2 Primary Sedimentation Facilities .............................................. 1.5-2

1.5.3 Activated Sludge Facilities ....................................................... 1.5-2

1.5.4 Secondary Sedimentation Facilities .......................................... 1.5-3

1.5.5 Chlorination/Dechlorination and Non-Potable Water (NPW)

Facilities .................................................................................... 1.5-5

1.5.5.1 Chlorination ............................................................ 1.5-5

1.5.5.2 Dechlorination ............................................................... 1.5-5

1.5.5.3 Non-Potable Water Facilities ........................................ 1.5-5

1.5.6 Waste Activated Sludge (WAS) Thickening Facilities ............. 1.5-6

1.5.7 Unstabilized Sludge Storage Facilities ..................................... 1.5-6

1.5.8 Sludge Dewatering Facilities .................................................... 1.5-7

1.5.9 Sludge Conveyance and Lime Stabilization Facilities .............. 1.5-7

1.5.10 Primary Effluent Structures ...................................................... 1.5-7

1.5.11 Final Effluent Structures ........................................................... 1.5-8

1.5.12 Standby Power Generation Facilities ........................................ 1.5-9

1.5.13 Collection and Conveyance Facilities ....................................... 1.5-9

1.6 Plant Loadings and Flows ..................................................................... 1.6-1

1.6.1 Introduction ............................................................................... 1.6-1

1.6.2 Waste Loadings ......................................................................... 1.6-1

1.6.2.1 Annual Average Design Loadings ................................ 1.6-1

1.6.2.2 Planning Design Loadings ............................................ 1.6-1

1.6.3 Plant Flows................................................................................ 1.6-2

1.6.4 Hydraulic Profile ....................................................................... 1.6-3

2. PROCESS DESCRIPTION

Chapter 2 Table of Contents ..................................................................... 2-i

2.1 Headworks ............................................................................................ 2.1-1

2.1.1 Purpose ...................................................................................... 2.1-1

2.1.2 Process Description ................................................................... 2.1-1

2.1.2.1 Screenings Area ............................................................ 2.1-1

2.1.2.2 Influent Pump Station ................................................... 2.1-2

TABLE OF CONTENTS (Continued)

Table of Contents −ii−

2.1.2.3 Aerated Grit Chamber ................................................... 2.1-4

2.1.2.4 Odor Reduction Station................................................. 2.1-5

2.1.3 Design and Performance Criteria .............................................. 2.1-6

2.1.3.1 Influent Screens ............................................................. 2.1-6

2.1.3.2 Influent Pumps .............................................................. 2.1-6

2.1.3.3 Grit Chamber ................................................................ 2.1-7

2.1.3.4 Odor Reduction Station................................................. 2.1-7

2.2 Primary Sedimentation Facilities .......................................................... 2.2-1

2.2.1 Purpose ...................................................................................... 2.2-1

2.2.2 Process Description ................................................................... 2.2-1

2.2.2.1 Primary Sedimentation Tanks ....................................... 2.2-1

2.2.2.2 Channel Aeration System .............................................. 2.2-2

2.2.2.3 Rapid Mix Facilities ...................................................... 2.2-2

2.2.2.4 Sludge Collection and Pumping .................................... 2.2-2

2.2.2.5 Primary Skimmings Processing Facilities ..................... 2.2-3

2.2.2.6 PST Chemical Addition Facilities ................................ 2.2-3

2.2.2.7 Odor Reduction Station................................................. 2.2-3

2.2.3 Design and Performance Criteria .............................................. 2.2-4

2.3 Activated Sludge Facilities ................................................................... 2.3-1

2.3.1 Purpose ...................................................................................... 2.3-1

2.3.2 Process Description ................................................................... 2.3-1

2.3.2.1 Activated Sludge Tanks ................................................ 2.3-1

2.3.2.2 AST Selector Zones ...................................................... 2.3-2

2.3.2.3 Air Diffusers ................................................................. 2.3-4

2.3.2.4 Process Air Blowers ...................................................... 2.3-5

2.3.2.5 Intermediate Mixed Liquor Return ............................... 2.3-5

2.3.2.6 Tank Drainage Facilities ............................................... 2.3-6

2.3.2.7 Channel Aeration Facilities ........................................... 2.3-6

2.3.3 Design and Performance Criteria .............................................. 2.3-7

2.3.3.1 Activated Sludge Tanks ................................................ 2.3-7

2.3.3.2 Selector Zone Mixing System ....................................... 2.3-8

2.3.3.3 Air Diffusers ................................................................. 2.3-9

2.3.3.4 Process Air Blowers .................................................... 2.3-10

2.3.3.5 Intermediate Mixed Liquor Return ............................. 2.3-11

2.3.3.6 Tank Drainage Facilities ............................................. 2.3-11

2.3.3.7 Channel Aeration Facilities ......................................... 2.3-12

2.4 Secondary Sedimentation Facilities ..................................................... 2.4-1

2.4.1 Purpose ...................................................................................... 2.4-1

2.4.2 Process Description ................................................................... 2.4-1

2.4.2.1 Sedimentation Tanks ..................................................... 2.4-1

2.4.2.2 Sludge Collectors .......................................................... 2.4-2

2.4.2.3 Return Activated Sludge (RAS) System ....................... 2.4-2

Table of Contents −iii−

2.4.2.4 Waste Activated Sludge (WAS) System ....................... 2.4-2

2.4.2.5 Skimmings Facility ....................................................... 2.4-3

2.4.2.6 RAS Chlorination ......................................................... 2.4-3

2.4.2.7 Tank Drainage Facilities ............................................... 2.4-4

2.5 Chlorination, Dechlorination and Non-Potable Water Facilities .......... 2.5-1

2.5.1 Purpose ...................................................................................... 2.5-1

2.5.2 Process Description ................................................................... 2.5-1

2.5.2.1 Chlorination Facilities ................................................... 2.5-2

2.5.2.2 Dechlorination Facilities ............................................... 2.5-4

2.5.2.3 Non-Potable Water Pump Station No. 1 ....................... 2.5-4

2.5.2.4 Non-Potable Water Pump Station No. 2 ....................... 2.5-5

2.6 Waste Activated Sludge Thickening Facilities .................................... 2.6-1

2.6.1 Purpose ...................................................................................... 2.6-1

2.6.2 Process Description ................................................................... 2.6-1

2.6.2.1 Dissolved Air Flotation (DAF) Tanks .......................... 2.6-1

2.6.2.2 Pressurization and Air Injection System ....................... 2.6-2

2.6.2.3 TWAS Pumping and Metering System ......................... 2.6-2

2.6.2.4 DAF Polymer Addition System .................................... 2.6-2

2.6.3 Design and Performance Criteria .............................................. 2.6-3

2.7 Unstabilized Sludge Storage Facilities ................................................. 2.7-1

2.7.1 Purpose ...................................................................................... 2.7-1

2.7.2 Process Description ................................................................... 2.7-1

2.7.2.1 Unstabilized Sludge Storage Tanks .............................. 2.7-1

2.7.2.2 Recirculation Mixing System........................................ 2.7-2

2.7.2.3 Unstabilized Sludge Storage Odor Reduction Station .. 2.7-2

2.7.3 Design and Performance Criteria .............................................. 2.7-3

2.8 Sludge Dewatering Facilities ................................................................ 2.8-1

2.8.1 Purpose ...................................................................................... 2.8-1

2.8.2 Process Description ................................................................... 2.8-1

2.8.3 Design and Performance Criteria .............................................. 2.8-2

2.9 Sludge Conveyance and Lime Stabilization Facilities .......................... 2.9-1

2.9.1 Purpose ...................................................................................... 2.9-1

2.9.2 Process Description ................................................................... 2.9-1

2.9.3 Design and Performance Criteria .............................................. 2.9-2

2.10 Primary Effluent Structures ................................................................ 2.10-1

2.10.1 Purpose .................................................................................... 2.10-1

2.10.2 Process Description ................................................................. 2.10-1

2.10.2.1 Primary Effluent Channel and Primary Effluent

Bypass Structure ..................................................... 2.10-1

2.10.2.2 Primary Effluent Bypass Metering Structure.......... 2.10-2

2.10.2.3 Primary Effluent Bypass Junction Structure........... 2.10-3

2.10.2.4 Primary Effluent Emergency Connection ............... 2.10-3

Table of Contents −iv−

2.10.3 Design and Performance Criteria ............................................ 2.10-3

2.11 Final Effluent Structures ..................................................................... 2.11-1

2.11.1 Purpose .................................................................................... 2.11-1

2.11.2 Process Description ................................................................. 2.11-1

2.11.2.1 Effluent Blending Structure .................................... 2.11-1

2.11.2.2 Effluent Metering Structure .................................... 2.11-2

2.11.3 Design and Performance Criteria ............................................ 2.11-2

2.12 Standby Power Generation Facilities .................................................. 2.12-1

2.12.1 Purpose .................................................................................... 2.12-1

2.12.2 Process Description ................................................................. 2.12-1

2.12.2.1 Standby Generators................................................. 2.12-1

2.12.2.2 Diesel Fuel Storage Tanks ...................................... 2.12-1

2.12.2.3 Diesel Fuel Transfer Pump Stations ....................... 2.12-1

2.12.2.4 Standby Power Switchgear ..................................... 2.12-2

2.12.2.5 Generator Control Panels ....................................... 2.12-2

2.12.3 Design and Performance Criteria ............................................ 2.12-2

2.13 Collection and Conveyance Facilities ................................................. 2.13-1

2.13.1 Purpose .................................................................................... 2.13-1

2.13.2 Process Description ................................................................. 2.13-1

2.13.2.1 Diversion Structures ............................................... 2.13-1

2.13.2.2 Pump Stations ......................................................... 2.13-2

2.13.2.2.1 Goat Canyon Pump Station ................... 2.13-2

2.13.2.2.2 Hollister Street Pump Station ................ 2.13-4

2.13.3 Design and Performance Criteria ............................................ 2.13-5

2.13.3.1 Diversion Structures ............................................... 2.13-5

2.13.3.2 Conveyance Pipelines ............................................. 2.13-7

2.13.3.3 Pump Stations ......................................................... 2.13-8

3. EQUIPMENT DESCRIPTION

Chapter 3 Table of Contents ..................................................................... 3-i

3.1 Headworks ............................................................................................ 3.1-1

3.1.1 Screenings Facilities ................................................................. 3.1-1

3.1.1.1 Mechanical Bar Screens ................................................ 3.1-1

3.1.1.2 Conveyors ..................................................................... 3.1-2

3.1.2 Influent Pump Station ............................................................... 3.1-4

3.1.2.1 Wetwell ......................................................................... 3.1-4

3.1.2.2 Pumping Equipment...................................................... 3.1-4

3.1.3 Grit Removal Facilities ............................................................. 3.1-5

3.1.3.1 Grit Chamber ................................................................ 3.1-5

3.1.3.2 Grit Removal Equipment .............................................. 3.1-6

3.1.3.3 Grit Classifier/Separators .............................................. 3.1-6

3.1.3.4 Aerated Grit Chamber Blowers ..................................... 3.1-7

Table of Contents −v−

3.1.4 Odor Reduction Station............................................................. 3.1-7

3.1.4.1 Odor Reduction Station Scrubber Exhaust

Fans .......................................................................... 3.1-7

3.1.4.2 Odor Reduction Station Scrubber ................................. 3.1-8

3.1.4.3 Odor Reduction Station pH and ORP

Controllers ................................................................ 3.1-9

3.1.4.4 Odor Reduction Station Recirculation Pumps .............. 3.1-9

3.1.4.5 Odor Reduction Station Sodium Hydroxide

(NaOH) Metering Pump ........................................... 3.1-9

3.1.4.6 Odor Reduction Station Sodium

Hypochlorite(NaOC1) Metering Pump System ...... 3.1-10

3.1.4.7 Odor Reduction Station NaOH Storage Tank ............. 3.1-10

3.1.4.8 Odor Reduction Station NaOC1 Storage

Tank ....................................................................... 3.1-11

3.1.4.9 NaOH and NaOC1 Containment Sump

Pumps ..................................................................... 3.1-11

3.1.4.10 Water Softening System ......................................... 3.1-11

3.1.4.11 Storage Bin/Grit Dewatering Areas Ventilation

System .................................................................... 3.1-12

3.1.4.12 Screening and Wetwell Ventilation System ........... 3.1-12

3.2 Primary Sedimentation Facilities .......................................................... 3.2-1

3.2.1 Primary Sedimentation Tanks ................................................... 3.2-1

3.2.2 Channel Aeration Facilities ....................................................... 3.2-1

3.2.3 Rapid Mix Chamber .................................................................. 3.2-2

3.2.4 Sludge Collection and Pumping Facilities ................................ 3.2-4

3.2.4.1 Sludge Collectors .......................................................... 3.2-4

3.2.4.2 Primary Sludge Pumping .............................................. 3.2-5

3.2.5 Primary Skimmings Processing Facilities ................................. 3.2-6

3.2.5.1 Surface Skimmers ......................................................... 3.2-6

3.2.5.2 Skimmings Pump Station .............................................. 3.2-7

3.2.6 Chemical Addition Facilities .................................................... 3.2-9

3.2.6.1 Polymer Addition System ............................................. 3.2-9

3.2.6.2 Ferric Chloride Addition System ................................ 3.2-11

3.2.7 Odor Reduction Station........................................................... 3.2-13

3.2.7.1 Odor Reduction Station Scrubber Exhaust

Fans ........................................................................ 3.2-14

3.2.7.2 Odor Reduction Station Scrubber ............................... 3.2-14

3.2.7.3 Odor Reduction Station pH and ORP Controllers ...... 3.2-15

3.2.7.4 Odor Reduction Station Recirculation

Pumps ..................................................................... 3.2-15

3.2.7.5 Odor Reduction Station Sodium Hydroxide (NaOH)

Metering Pump ....................................................... 3.2-16

Table of Contents −vi−

3.2.7.6 Odor Reduction Station Sodium Hypochlorite

(NaOC1) Metering Pump ...................................... 3.2-16

3.2.7.7 Odor Reduction Station NaOH Storage Tank ............. 3.2-16

3.2.7.8 Odor Reduction Station NaOC1 Storage Tank ........... 3.2-17

3.2.7.9 NaOH and NaOC1 Containment Sump Pumps .......... 3.2-17

3.2.7.10 Water Softening System ......................................... 3.2-18

3.3 Activated Sludge Facilities ................................................................... 3.3-1

3.3.1 Activated Sludge Tanks ............................................................ 3.3-1

3.3.2 Selector Zone Mixing System ................................................... 3.3-2

3.3.2.1 Pre-Anoxic Zone (Cell “A”) ......................................... 3.3-4

3.3.2.2 Anaerobic Zone (Cells “B” and “C”) ............................ 3.3-4

3.3.2.3 Anoxic Zones (Cells “D”, “E” and “F”) ....................... 3.3-5

3.3.2.4 Aerobic Zone................................................................. 3.3-6

3.3.2.4.1 Air Diffusers .................................................. 3.3-7

3.3.2.4.2 Intermediate Mixed Liquor Return .............. 3.3-12

3.3.3 Tank Drainage Facilities ......................................................... 3.3-14

3.3.4 Process Air Blowers ................................................................ 3.3-16

3.3.5 Channel Aeration Facilities ..................................................... 3.3-19

3.4 Secondary Sedimentation Facilities ..................................................... 3.4-1

3.4.1 Sedimentation Tanks ................................................................. 3.4-1

3.4.2 Sludge Collection and Pumping Facilities ................................ 3.4-2

3.4.2.1 Sludge Collectors .......................................................... 3.4-2

3.4.2.2 Return Activated Sludge (RAS) Pumping .................... 3.4-3

3.4.2.3 Waste Activated Sludge (WAS) Pumping .................... 3.4-4

3.4.3 Secondary Skimmings Processing Facilities ............................. 3.4-5

3.4.3.1 Surface Rotary Skimmers ............................................. 3.4-5

3.4.3.2 Skimmings Pump Station .............................................. 3.4-5

3.4.4 RAS Chlorination ..................................................................... 3.4-6

3.4.5 Tank Drainage Facilities ........................................................... 3.4-7

3.5 Chlorination, Dechlorination and Non-Potable Water Facilities .......... 3.5-1

3.5.1 Chlorination Facilities ............................................................... 3.5-1

3.5.1.1 Sodium Hypochlorite Supply ........................................ 3.5-1

3.5.1.2 Sodium Hypochlorite Storage ....................................... 3.5-4

3.5.2 Dechlorination Facilities ........................................................... 3.5-4

3.5.2.1 Sodium Bisulfite Supply ............................................... 3.5-4

3.5.2.2 Sodium Bisulfite Storage .............................................. 3.5-5

3.5.3 Non-Potable Water (NPW) Pump Station No. 1 ...................... 3.5-6

3.5.3.1 Hydropneumatic Tank ................................................... 3.5-7

3.5.3.2 Make-Up Air System .................................................... 3.5-7

3.5.3.3 Non-Potable Water Pumps ............................................ 3.5-7

3.5.3.4 Water Supply and Storage ............................................. 3.5-8

Table of Contents −vii−

3.5.4 Non-Potable Water (NPW) Pump Station No. 2 ...................... 3.5-8

3.5.4.1 Non-Potable Water Pumps ............................................ 3.5-8

3.5.4.2 Water Supply and Storage ............................................. 3.5-9

3.6 Waste Activated Sludge Thickening Facilities ..................................... 3.6-1

3.6.1 Dissolved Air Flotation (DAF) Thickeners .............................. 3.6-1

3.6.2 Pressurization and Air Injection System ................................... 3.6-2

3.6.3 TWAS Pumping and Metering System ..................................... 3.6-3

3.6.4 DAF Polymer Addition System ................................................ 3.6-3

3.6.4.1 Polymer Bulk Storage Tank .......................................... 3.6-4

3.6.4.2 Bulk Polymer Transfer Pumps ...................................... 3.6-4

3.6.4.3 Polymer Mix Tanks ....................................................... 3.6-4

3.6.4.4 Polymer Feed Pumps .................................................... 3.6-5

3.7 Unstabilized Sludge Storage Facilities ................................................. 3.7-1

3.7.1 Sludge Storage Tanks ............................................................... 3.7-1

3.7.2 Sludge Mixing System .............................................................. 3.7-1

3.7.3 Ferric Chloride and Sodium Hypochlorite Addition Systems .. 3.7-2

3.7.4 Odor Reduction Station............................................................. 3.7-2

3.7.4.1 Odor Reduction Station Scrubber Exhaust

Fans .......................................................................... 3.7-3

3.7.4.2 Odor Reduction Station Scrubber ................................. 3.7-3

3.7.4.3 Odor Reduction Station pH and ORP Controllers ........ 3.7-4

3.7.4.4 Odor Reduction Station Recirculation Pumps .............. 3.7-4

3.7.4.5 Odor Reduction Station Sodium Hydroxide

(NaOH) Metering Pump ........................................... 3.7-5

3.7.4.6 Odor Reduction Station Sodium Hypochlorite

(NaOCl) Metering Pump .......................................... 3.7-5

3.7.4.7 Odor Reduction Station NaOH Storage Tank ............... 3.7-6

3.7.4.8 Odor Reduction Station NaOCl Storage Tank .............. 3.7-6

3.7.4.9 NaOH and NaOC1 Containment Sump Pumps ............ 3.7-7

3.7.4.10 Water Softening System ........................................... 3.7-7

3.8 Sludge Dewatering Facilities ................................................................ 3.8-1

3.8.1 General ...................................................................................... 3.8-1

3.8.2 Dewatering System Pumping Facilities .................................... 3.8-1

3.8.3 Dewatering System Polymer Conditioning Facilities ............... 3.8-3

3.8.3.1 Polymer Bulk Storage ................................................... 3.8-3

3.8.3.2 Bulk Polymer Transfer Pumps ...................................... 3.8-4

3.8.3.3 Polymer Mixing Tanks.................................................. 3.8-5

3.8.3.4 Polymer Feed Pumps .................................................... 3.8-5

3.8.4 Belt Filter Presses ..................................................................... 3.8-6

3.8.5 Odor Reduction Station........................................................... 3.8-10

3.8.5.1 Odor Reduction Station Scrubber Exhaust Fans ......... 3.8-11

3.8.5.2 Odor Reduction Station Scrubber ............................... 3.8-11

Table of Contents −viii−

3.8.5.3 Odor Reduction Station Scrubber No. 1 pH

Controller ................................................................ 3.8-12

3.8.5.4 Odor Reduction Station Scrubber No. 1 and No. 2

Recirculation Pumps ............................................... 3.8-12

3.8.5.5 Odor Reduction Station Scrubber No. 1 Sulfuric

Acid (H2SO4) Metering Pumps .............................. 3.8-13

3.8.5.6 Odor Reduction Station Scrubber No. 1 H2SO4

Storage Tank ........................................................... 3.8-13

3.8.5.7 Odor Reduction Station Scrubber No. 2 pH and

ORP Controllers ..................................................... 3.8-14

3.8.5.8 Odor Reduction Station Scrubber No. 2 Sodium

Hydroxide (NaOH) Metering Pump ....................... 3.8-14

3.8.5.9 Odor Reduction Station Scrubber No. 2 Sodium

Hypochlorite (NaOC1) Metering Pump ................. 3.8-14

3.8.5.10 Odor Reduction Station Scrubber No. 2 NaOH

Storage Tank ........................................................... 3.8-15

3.8.5.11 Odor Reduction Station Scrubber No. 2 NaOC1

Storage Tank ........................................................... 3.8-15

3.8.5.12 H2SO4, NaOH and NaOC1 Containment Sump

Pumps ..................................................................... 3.8-16

3.8.5.13 Water Softening System ......................................... 3.8-16

3.8.5.14 Sludge Dewatering Building Air Supply Fans ....... 3.8-16

3.8.5.15 Sludge Dewatering Building Exhaust Fans ............ 3.8-17

3.8.5.16 Truck Loading Air Supply Fans ............................. 3.8-17

3.9 Sludge Conveyance and Lime Stabilization Facilities .......................... 3.9-1

3.9.1 General ...................................................................................... 3.9-1

3.9.2 Dewatered Sludge Conveyance System .................................... 3.9-1

3.9.3 Lime Storage Facilities ............................................................. 3.9-3

3.9.4 Lime Conveyance Facilities ...................................................... 3.9-4

3.9.5 Sludge/Lime Mixing Facilities.................................................. 3.9-5

3.9.6 Stabilized Sludge Conveyance/Truck Loading System ............ 3.9-6

3.10 Primary Effluent Structures ................................................................ 3.10-1

3.10.1 Primary Effluent Channel and Primary Effluent Bypass

Structure .................................................................................. 3.10-1

3.10.2 Primary Effluent Bypass Metering Structure .......................... 3.10-2

3.10.3 Primary Effluent Bypass Junction Structure ........................... 3.10-2

3.10.4 Primary Effluent Emergency Connection (PEEC) .................. 3.10-3

3.11 Final Effluent Structures ..................................................................... 3.11-1

3.11.1 Effluent Blending Structure .................................................... 3.11-1

3.11.2 Effluent Metering Structure .................................................... 3.11-2

3.11.3 Canyon Collector Meter Vault ................................................ 3.11-2

3.11.4 Tank Drain/Canyon Collector Structure ................................. 3.11-3

Table of Contents −ix−

3.12 Standby Power Generation Facilities .................................................. 3.12-1

3.12.1 Containerized Standby Generators .......................................... 3.12-1

3.12.2 Diesel Fuel Storage Tanks ...................................................... 3.12-2

3.12.3 Diesel Fuel Transfer Pump Stations ....................................... 3.12-3

3.12.3.1 Diesel Fuel Transfer Pumps .................................. 3.12-3

3.12.3.2 Diesel Fuel Day Tanks ........................................... 3.12-4

3.12.3.3 Diesel Fuel Overflow Tanks ................................... 3.12-5

3.12.3.4 Diesel Fuel Return Pumps ...................................... 3.12-5

3.12.4 Fuel Oil System Control Panels .............................................. 3.12-6

3.12.4.1 Generator No. 1 Fuel Oil Control Panel ................. 3.12-6

3.12.4.2 Generator No. 2 Fuel Oil Control Panel ................. 3.12-6

3.12.5 12kV Generator Switchgear SG-GDB .................................... 3.12-6

3.12.5.1 Generator Breakers VCB-G1, VCB-G2 ................. 3.12-6

3.12.5.2 Standby Power Tie Breakers

VCB-AGT, VCB-BGT ........................................... 3.12-6

3.12.5.3 Generator Paralleling Control Panels ..................... 3.12-7

3.13 Collection and Conveyance Facilities ................................................. 3.13-1

3.13.1 Diversion Structures ................................................................ 3.13-1

3.13.2 Conveyance Pipelines ............................................................. 3.13-2

3.13.2.1 Gravity Piping ........................................................ 3.13-2

3.13.2.2 Force Main Piping .................................................. 3.13-4

3.13.3 Goat Canyon Pump Station ..................................................... 3.13-4

3.13.3.1 Isolation Valve, Wetwell, and Pumps .................... 3.13-4

3.13.3.2 Surge Control System ............................................. 3.13-7

3.13.3.3 Odor Reduction Station .......................................... 3.13-8

3.13.3.4 Standby Generator ................................................ 3.13-12

3.13.4 Hollister Street Pump Station ............................................... 3.13-14

3.13.4.1 Isolation Valve, Wetwell, and Pumps .................. 3.13-14

3.13.4.2 Surge Control System ........................................... 3.13-16

3.13.4.3 Odor Reduction Station ........................................ 3.13-18

3.13.4.4 Standby Generator ................................................ 3.13-21

VOLUME 2

TABLE OF CONTENTS ................................................................................................ i

4. OPERATIONAL PROCEDURES

Chapter 4 Table of Contents ..................................................................... 4-i

4.0 Foreword ............................................................................................... 4.0-1

4.0.1 Process Control and Instrumentation ........................................ 4.0-1

4.0.1.1 General Concept ............................................................ 4.0-1

4.0.1.2 Local Control Center Locations .................................... 4.0-2

Table of Contents −x−

4.0.1.3 Plant Control Center & Operations Building

Control Center (OBCC) ................................................ 4.0-3

4.0.1.4 Operational Control ...................................................... 4.0-4

4.0.2 General Start-Up Procedures .................................................... 4.0-5

4.0.3 General Shutdown Procedures .................................................. 4.0-6

4.0.4 General Alarm and Status Annunciation Strategies .................. 4.0-7

4.0.5 General Requirements to Daily Operations Checks .................. 4.0-8

4.0.6 Training Record ........................................................................ 4.0-8

4.1 Headworks ............................................................................................ 4.1-1

4.1.1 Description of Controls and Operation ..................................... 4.1-1

4.1.1.1 General ......................................................................... 4.1-1

4.1.1.2 Screening Equipment ................................................... 4.1-2

4.1.1.3 Influent Pump Station .................................................. 4.1-9

4.1.1.4 Grit Handling Equipment ........................................... 4.1-13

4.1.1.5 Grit Screening Storage Bin Winches ......................... 4.1-18

4.1.1.6 Odor Reduction Station.............................................. 4.1-18

4.1.2 Step by Step Start-Up Procedures ........................................... 4.1-26

4.1.2.1 General System Start-Up Procedures ......................... 4.1-26

4.1.2.2 Individual Equipment Start-Up Procedures ............... 4.1-28

4.1.2.2.1 Screening Facilities ..................................... 4.1-28

4.1.2.2.2 Influent Pump Station ................................. 4.1-31

4.1.2.2.3 Grit Handling Equipment ............................ 4.1-32

4.1.2.2.4 Odor Reduction Station............................... 4.1-34

4.1.3 Step by Step Shutdown Procedures ........................................ 4.1-43

4.1.3.1 General System Shutdown Procedures ...................... 4.1-43

4.1.3.2 Individual Equipment Shutdown Procedures ............. 4.1-44

4.1.3.2.1 Screening Facilities ..................................... 4.1-42

4.1.3.2.2 Influent Pump Station ................................. 4.1-45

4.1.3.2.3 Grit Handling Equipment ............................ 4.1-46

4.1.3.2.4 Odor Reduction Station............................... 4.1-47

4.1.4 Alarm and Status Annunciation .............................................. 4.1-52

4.1.4.1 Screenings Facilities .................................................. 4.1-52

4.1.4.2 Influent Pump Station ................................................ 4.1-54

4.1.4.3 Aerated Grit Chamber ................................................ 4.1-56

4.1.4.4 Odor Reduction Station.............................................. 4.1-58

4.1.5 Daily Operational Checks ....................................................... 4.1-65

4.1.5.1 General ....................................................................... 4.1-65

4.1.5.2 Screening Equipment ................................................. 4.1-65

4.1.5.3 Influent Pump Station ................................................ 4.1-67

4.1.5.4 Grit Handling Equipment ........................................... 4.1-68

4.1.5.5 Odor Reduction Station.............................................. 4.1-71

Table of Contents −xi−

4.1.6 Training Record ...................................................................... 4.1-78

4.1.6.1 Reading Assignment .................................................. 4.1-78

4.1.6.2 Field Instruction ......................................................... 4.1-78

4.2 Primary Sedimentation Facilities .......................................................... 4.2-1

4.2.1 Description of Controls and Operation ..................................... 4.2-1

4.2.1.1 General ......................................................................... 4.2-1

4.2.1.2 Channel Aeration System ............................................. 4.2-1

4.2.1.3 Rapid Mix Facilities ..................................................... 4.2-3

4.2.1.4 Sludge Collection and Pumping ................................... 4.2-4

4.2.1.5 Primary Skimmings Processing Facilities .................... 4.2-7

4.2.1.6 PST Chemical Addition Facilities ............................. 4.2-14

4.2.1.6.1 PST Polymer Addition Facilities ................ 4.2-15

4.2.1.6.2 PST Ferric Chloride Addition Facilities ..... 4.2-20

4.2.1.7 Odor Reduction Station.............................................. 4.2-25

4.2.2 Step by Step Start-Up Procedures ........................................... 4.2-31

4.2.2.1 General System Start-Up Procedures ......................... 4.2-31

4.2.2.2 Individual Equipment Start-Up Procedures ............... 4.2-35

4.2.2.2.1 Channel Aeration System ............................ 4.2-35

4.2.2.2.2 Rapid Mix Facilities .................................... 4.2-36

4.2.2.2.3 Sludge Collection and Pumping .................. 4.2-39

4.2.2.2.4 Primary Skimmings Processing Facilities ... 4.2-43

4.2.2.2.5 Chemical Addition Facilities ...................... 4.2-46

4.2.2.2.5.1 PST Polymer Addition

Facilities ................................... 4.2-46

4.2.2.2.5.2 PST Ferric Chloride Addition

Facilities ................................... 4.2-49

4.2.2.2.6 Odor Reduction Station............................... 4.2-53

4.2.3 Step by Step Shutdown Procedures ........................................ 4.2-59

4.2.3.1 General System Shutdown Procedures ...................... 4.2-59

4.2.3.2 Individual Equipment Shutdown Procedures ............. 4.2-62

4.2.3.2.1 Channel Aeration System ............................ 4.2-62

4.2.3.2.2 Rapid Mix Facilities .................................... 4.2-63

4.2.3.2.3 Sludge Collection and Pumping .................. 4.2-65

4.2.3.2.4 Primary Skimmings Processing Facilities ... 4.2-66

4.2.3.2.5 Chemical Addition Facilities ...................... 4.2-67

4.2.3.2.5.1 PST Polymer Addition

Facilities ................................... 4.2-68

4.2.3.2.5.2 PST Ferric Chloride Addition

Facilities ................................... 4.2-70

4.2.3.2.6 Odor Reduction Station............................... 4.2-72

4.2.4 Alarm and Status Annunciation .............................................. 4.2-77

4.2.4.1 Channel Aeration Facilities ........................................ 4.2-77

Table of Contents −xii−

4.2.4.2 Rapid Mix Chamber ................................................... 4.2-78

4.2.4.3 Sludge Collection and Pumping Facilities ................. 4.2-80

4.2.4.4 Primary Skimmings Processing Facilities .................. 4.2-83

4.2.4.5 Chemical Addition Facilities ..................................... 4.2-86

4.2.4.5.1 Polymer Addition System ......................... 4.2-87

4.2.4.5.2 Ferric Chloride Addition System .............. 4.2-89

4.2.4.6 Odor Reduction Station.............................................. 4.2-93

4.2.5 Daily Operational Checks ....................................................... 4.2-98

4.2.5.1 General ....................................................................... 4.2-98

4.2.5.2 Primary Sedimentation Tanks .................................... 4.2-98

4.2.5.3 Channel Aeration System ........................................... 4.2-99

4.2.5.4 Rapid Mix Chamber ................................................. 4.2-100

4.2.5.5 Sludge Collection and Pumping Facilities ............... 4.2-102

4.2.5.6 Primary Skimmings Processing Facilities ................ 4.2-104

4.2.5.7 Chemical Addition Facilities ................................... 4.2-106

4.2.5.7.1 Polymer Addition System ....................... 4.2-106

4.2.5.7.2 Ferric Chloride Addition System ............ 4.2-108

4.2.5.8 Odor Reduction Station............................................ 4.2-110

4.2.6 Training Record .................................................................... 4.2-116

4.2.6.1 Reading Assignment ................................................ 4.2-116

4.2.6.2 Field Instruction ....................................................... 4.2-116

4.3 Activated Sludge Facilities ................................................................... 4.3-1

4.3.1 Description of Controls and Operation ..................................... 4.3-1

4.3.1.1 General ......................................................................... 4.3-1

4.3.1.2 Activated Sludge Tanks ............................................... 4.3-1

4.3.1.3 Selector Zone Mixing System ...................................... 4.3-2

4.3.1.4 Air Diffusers ................................................................ 4.3-3

4.3.1.5 Intermediate Mixed Liquor Return .............................. 4.3-5

4.3.1.6 Tank Drainage Facilities .............................................. 4.3-6

4.3.1.7 Process Air Blowers ..................................................... 4.3-7

4.3.1.8 Channel Aeration Facilities ........................................ 4.3-12

4.3.2 Step by Step Start-Up Procedures ........................................... 4.3-13

4.3.2.1 Initial Start-Up Procedures ......................................... 4.3-13

4.3.2.2 General Start-Up Procedures ..................................... 4.3-15

4.3.2.3 Individual Equipment Start-Up Procedures ............... 4.3-17

4.3.2.3.1 Activated Sludge Tanks .............................. 4.3-17

4.3.2.3.2 Selector Zone Mixing System ..................... 4.3-18

4.3.2.3.3 Air Diffusers ............................................... 4.3-19

4.3.2.3.4 Intermediate Mixed Liquor Return ............. 4.3-21

4.3.2.3.5 Tank Drainage Facilities ............................. 4.3-22

4.3.2.3.6 Process Air Blowers .................................... 4.3-24

4.3.2.2.7 Channel Aeration Facilities ......................... 4.3-29

Table of Contents −xiii−

4.3.3 Step by Step Shutdown Procedures ........................................ 4.3-30

4.3.3.1 General Shutdown Procedures ................................... 4.3-30

4.3.3.2 Individual Equipment Shutdown Procedures ............. 4.3-31

4.3.3.2.1 Selector Zone Mixing System ..................... 4.3-31

4.3.3.2.2 Air Diffusers ............................................... 4.3-32

4.3.3.2.3 Intermediate Mixed Liquor Return ............. 4.3-33

4.3.3.2.4 Tank Drainage Facilities ............................. 4.3-34

4.3.3.2.5 Process Air Blowers .................................... 4.3-35

4.3.3.2.6 Channel Aeration Blowers .......................... 4.3-37

4.3.4 Alarm and Status Indication .................................................... 4.3-38

4.3.4.1 Activated Sludge Tanks .............................................. 4.3-38

4.3.4.2 Selector Zone Mixing System ..................................... 4.3-38

4.3.4.3 Air Diffusers ............................................................... 4.3-42

4.3.4.4 Intermediate Mixed Liquor Return ............................. 4.3-50

4.3.4.5 Tank Drainage Facility ................................................ 4.3-52

4.3.4.6 Process Air Preparation Facility.................................. 4.3-53

4.3.4.7 Channel Aeration Blowers .......................................... 4.3-65

4.3.5 Daily Operational Checks ....................................................... 4.3-67

4.3.5.1 General ........................................................................ 4.3-67

4.3.5.2 Activated Sludge Tanks .............................................. 4.3-67

4.3.5.3 Selector Zone Mixing System ..................................... 4.3-68

4.3.5.4 Air Diffusers ............................................................... 4.3-68

4.3.5.5 Intermediate Mixed Liquor Return ............................. 4.3-70

4.3.5.6 Tank Drainage Facility ................................................ 4.3-71

4.3.5.7 Process Air Preparation Facility.................................. 4.3-72

4.3.5.8 Channel Aeration Blowers .......................................... 4.3-74

4.3.6 Training Record ...................................................................... 4.3-75

4.3.6.1 Reading Assignment .................................................. 4.3-75

4.3.6.2 Field Instruction ......................................................... 4.3-76

4.4 Secondary Sedimentation Facilities ..................................................... 4.4-1

4.4.1 Description of Controls and Operation ..................................... 4.4-1

4.4.1.1 General .......................................................................... 4.4-1

4.4.1.2 Sludge Collectors .......................................................... 4.4-1

4.4.1.3 Return Activated Sludge (RAS) Pumping .................... 4.4-2

4.4.1.4 Waste Activated Sludge (WAS) Pumping .................... 4.4-6

4.4.1.5 Surface Skimmers ......................................................... 4.4-7

4.4.1.6 Skimmings Pump Station .............................................. 4.4-8

4.4.1.7 RAS Chlorination ....................................................... 4.4-12

4.4.1.8 Tank Drainage Facilities ............................................. 4.4-12

4.4.2 Step by Step Start-Up Procedures ........................................... 4.4-14

4.4.2.1 General Start-Up Procedures ..................................... 4.4-14

4.4.2.2 Individual Equipment Start-Up Procedures ................ 4.4-15

Table of Contents −xiv−

4.4.2.2.1 Sludge Collectors ........................................ 4.4-15

4.4.2.2.2 Return Activated Sludge (RAS) Pumping .. 4.4-16

4.4.2.2.3 Waste Activated Sludge (WAS) Pumping .. 4.4-17

4.4.2.2.4 Surface Skimmers ....................................... 4.4-17

4.4.2.2.5 Skimmings Pump Station ............................ 4.4-18

4.4.2.2.6 RAS Chlorination ....................................... 4.4-19

4.4.2.2.7 Tank Drainage Facilities ............................. 4.4-19

4.4.3 Step by Step Shutdown Procedures ........................................ 4.4-20

4.4.3.1 General Shutdown Procedures ................................... 4.4-20

4.4.3.2 Individual Equipment Shutdown Procedures .............. 4.4-22

4.4.3.2.1 Sludge Collectors ........................................ 4.4-22

4.4.3.2.2 Return Activated Sludge (RAS) Pumping .. 4.4-22

4.4.3.2.3 Waste Activated Sludge (WAS) Pumping .. 4.4-23

4.4.3.2.4 Surface Skimmers ....................................... 4.4-23

4.4.3.2.5 Skimmings Pump Station ............................ 4.4-24

4.4.3.2.6 RAS Chlorination ....................................... 4.4-25

4.4.3.2.7 Tank Drainage Facilities ............................. 4.4-25

4.4.4 Alarms, Indicators, and Status Alerts ...................................... 4.4-25

4.4.4.1 Sludge Collectors ........................................................ 4.4-25

4.4.4.2 Return Activated Sludge (RAS) Pumping .................. 4.4-27

4.4.4.3 Waste Activated Sludge (WAS) Pumping .................. 4.4-27

4.4.4.4 Surface Skimmers ....................................................... 4.4-28

4.4.4.5 Skimmings Pump Station ............................................ 4.4-29

4.4.4.6 RAS Chlorination ....................................................... 4.4-30

4.4.4.7 Tank Drainage Facilities ............................................. 4.4-30

4.4.5 Daily Operational Checks ....................................................... 4.4-30

4.4.5.1 General ........................................................................ 4.4-30

4.4.5.2 Secondary Sedimentation Tanks ................................. 4.4-30

4.4.5.3 Sludge Collectors ........................................................ 4.4-31

4.4.5.4 Return Activated Sludge (RAS) Pumping .................. 4.4-32

4.4.5.5 Waste Activated Sludge (WAS) Pumping .................. 4.4-32

4.4.5.6 Surface Skimmers ....................................................... 4.4-33

4.4.5.7 Skimmings Pump Station ............................................ 4.4-33

4.4.5.8 RAS Chlorination ....................................................... 4.4-34

4.4.6 Training Record ...................................................................... 4.4-34

4.4.6.1 Reading Assignment .................................................. 4.4-34

4.4.6.2 Field Instruction ......................................................... 4.4-35

4.5 Chlorination, Dechlorination and Non-Potable Water .......................... 4.5-1

4.5.1 Description of Controls and Operation ..................................... 4.5-1

4.5.1.1 General ......................................................................... 4.5-1

4.5.1.2 Chlorination Facilities .................................................. 4.5-1

4.5.1.3 Dechlorination Facilities .............................................. 4.5-6

Table of Contents −xv−

4.5.1.4 Non-Potable Water Pump Station No. 1 (NPWPS1) ... 4.5-9

4.5.1.5 Non-Potable Water Pump Station No. 2 (NPWPS2) . 4.5-13

4.5.2 Step by Step Start-Up Procedures ........................................... 4.5-17

4.5.2.1 Chlorination Facilities ................................................ 4.5-17

4.5.2.1.1 General System Start-Up Procedures ......... 4.5-17

4.5.2.1.2 Individual Equipment Start-Up

Procedures ........................................................ 4.5-17

4.5.2.2 Dechlorination Facilities ............................................ 4.5-24

4.5.2.2.1 General System Start-Up Procedures ......... 4.5-24

4.5.2.2.2 Individual Equipment Start-Up

Procedures ........................................................ 4.5-24

4.5.2.3 Non-Potable Water Pump Station No. 1 Start-Up

Procedures ......................................................... 4.5-27

4.5.2.3.1 General System Start-Up Procedures .......... 4.5-27

4.5.2.3.2 Individual Equipment Start-Up

Procedures ........................................................ 4.5-29

4.5.2.4 Non-Potable Water Pump Station No. 2 Start-Up

Procedures ......................................................... 4.5-31

4.5.2.4.1 General System Start-Up Procedures ......... 4.5-31

4.5.2.4.2 Individual Equipment Start-Up Procedures 4.5-32

4.5.3 Step by Step Shutdown Procedures ........................................ 4.5-33

4.5.3.1 Chlorination Facilities ................................................. 4.5-33

4.5.3.1.1 General System Shutdown Procedures ....... 4.5-33

4.5.3.1.2 Individual Equipment Shutdown

Procedures ......................................................... 4.5-34

4.5.3.2 Dechlorination Facilities ............................................. 4.5-38

4.5.3.