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Rental RT Series DAF Dissolved Air Flotation System

GENERAL DESCRIPTION

Dissolved Air Flotation (DAF) is a proven and effective physical/chemical technology for treating a variety of industrial and municipal process and wastewater streams. DAF systems are commonly used to meet a variety of treatment goals including:

• Product recovery and reuse

• Pretreatment to meet sewer discharge limits

• Pretreatment to reduce loading on downstream biological treatment systems

• Clarification of aerobic and anaerobic biological treatment solids

• Polishing of biological treatment effluent (algae and phosphorous removal)

• Thickening of biosolids

Evoqua’s RT Rental DAF systems are designed to remove total suspended solids (TSS), biochemical oxygen demand (BOD), and fats, oils and greases (FOG) from a wastewater stream. Contaminants are removed through the use of a dissolved air-in-water solution produced by injecting air under pressure into a recycle stream of clarified DAF effluent. This recycle stream is then combined and mixed with incoming wastewater in an internal contact chamber where the dissolved air comes out of solution in the form of micron sized bubbles that attach to the contaminants.

The bubbles and contaminants rise to the surface and form a floating bed of material that is removed by a surface skimmer into an internal hopper for further handling, while heavier solids sink and are removed by the bottom auger.

RT RENTAL DAF FEATURES

Evoqua offers five sizes of rental DAFs designed to hydraulically handle flows as shown below. Leases are available for any duration of three months or more.

RT Series packaged DAF systems have incorporated more than thirty years of continuous improvements with multiple installations in a variety of applications.

Effluent Flow Ranges*

DAF Unit MIN (gpm) MAX (gpm)

RT-50A 90 200

RT-100A 200 400

RT-150A 300 600

RT-240A 480 1,000

RT-500A 1,000 2,000

* Actual DAF flow rating based on site-specific conditions.

Consult with Evoqua engineers for application specific flow rates.

RT SYSTEMS PROVIDE UNIQUE STANDARD FEATURES INCLUDING:

• Complete, skid-mounted design for quick, easy installation

• Rugged 304/316 SS tank design that will not flex and is corrosion resistant

• Integral flocculation tube that is equipped with three chemical injection ports and is designed to provide optimal mixing of coagulant and flocculant chemicals within the recommended flow range

• Safe, simple, reliable design and operation provides superior performance without the use of high maintenance, labor intensive plate-packs that can foul or collapse

• Completely prewired NEMA 4X control cabinet requiring only a single 480 VAC power drop to operate

• An industry-leading Hellbender® whitewater system that is both efficient, and eliminates the need for an external air source

• Variable speed skimmer drive

• Large, internal float hopper minimizes pumping requirement

• DAF float hopper is equipped with a float level sensor to enable an optional sludge pump to be started and stopped automatically

• Automated settled solids auger

• Quality drive and pump components for long-term reliability

SPECIFICATIONS

RT-50A RT-100A RT-150A RT-240A

Overall Dimensions (L x W x H)

14’1 1” x 6’4” x 7’2”

18’8” x 8’6” x 8’2”

23'4" x 10'6" x 9'8"

31’1” x 10’5” x 9’8”

Shipping Weight 4,900 lbs 7,000 lbs 10,000 lbs 14,000 lbs

Operating Weight 16,300 lbs 33,300 lbs 55,800 lbs 83,300 lbs

Effluent Water 90 gpm nominal / 200 gpm max.

200 gpm nominal / 400 gpm max.

300 gpm nominal / 600 gpm max.

480 gpm nominal / 1,000 gpm max.

Effluent Water (Produced Water) N/A N/A 41,000 BPD max.* 75,000 BPD max*

Effluent Flow Gravity Gravity Gravity Gravity

Electrical Requirements 460 VAC / 3φ / 60 Hz / 31 FLA

460 VAC / 3φ / 60 Hz / 31 FLA

460 VAC / 3φ / 60 Hz / 45 FLA

460 VAC / 3φ / 60 Hz / 45 FLA

Optional 3-10 hp pump depending on sludge volume and characteristics, as well as customer preferences.

Service Connections – Inlet / Outlet / Float

6” / 6” / 4” – 150# Flange

8” / 8” / 6” – 150# Flange

12" / 12" / 6" 150# Flange

12” / 12” / 6” – 150# Flange

Settled Solids Discharge 4” Flange 4” Flange 6" Flange 6” Flange

Recycle Pump Hellbender® HB-60, 15 hp

Hellbender® HB-90, 15 hp

Hellbender® HB-150, 20 hp

Hellbender® HP-150, 20 hp

Active Surface Area 57 ft2 101 ft2 153 ft2 239 ft2

Nominal Water Volume 1,260 gallons 2,400 gallons 5,500 gallons 8,450 gallons

Float Hopper Capacity 100 gallons 170 gallons 390 gallons 360 gallons

* Actual results may vary depending on water chemistry, chlorides, and solids loading.

210 Sixth Avenue, Suite 3300, Pittsburgh PA 15222 USA

+1-866-926-8420 evoqua.com

Hellbender is a trademark of Evoqua, its subsidiaries or affiliates, in some countries. All other trademarks are those of their respective owners. All information presented herein is believed reliable and in accordance with accepted engineering practices. Evoqua makes no warranties as to the completeness of this information. Users are responsible for evaluating individual prodect suitability for specific applications. Evoqua assumes no liability whatsoever for any special, indirect or consequential damages arising from the sale, resale or misuse of its products.

© 2023 Evoqua Water Technologies LLC Subject to change without notice IW-RTSERIESDAF-DS-0223