Digester Complex Upgrades - Pre-Purchase Gas Purification Scrubbers

Salt Lake City Department of Public Utilities is soliciting bids for a pre-purchase Gas Purification Scrubbers package, a complete hydrogen sulfide removal system for the Digester Complex Upgrades at the Salt Lake City Water Reclamation Facility (Project No. 524905449), with bids due August 5, 2026 at 2:00 p.m. through the Utah Public Procurement Place (U3P) website. Addendum 01 names acceptable manufacturers as Martin Energy Group, MV Technologies, Unison Solutions, Inc., and Varec Biogas, or approved equals. All bids submitted without signed acknowledgment of the addendum are rejected.

The system includes duty and standby media vessels rated for 300 to 500 standard cubic feet per minute, with inlet hydrogen sulfide of 200 to 400 parts per million by volume and a maximum outlet of 10 parts per million by volume. Units must operate outdoors in high-desert conditions from 8°F to 100°F at 4,300 feet elevation. Vessels specify 316 stainless steel as preferred, 150# ANSI flanges, and ASME B31.3 piping. A Utah-licensed Professional Engineer must provide sealed anchorage calculations and product selection. The control package requires MODBUS/TCP integration with plant SCADA. The warranty covers 24 months from startup or 30 months from delivery, whichever occurs first. Bidders must provide local warranty service responding within 24 hours and five references for comparable U.S. systems installed within the previous five years. Factory testing, on-site startup of at least two consecutive 8-hour workdays, and operator training are required.

Award is best value across three parts: pass-fail review of mandatory qualifications, reference verification, and guaranteed performance; a 25-year lifecycle cost analysis at a 3% discount rate; and non-economic factors, including local support, spare parts availability, and reference feedback. The City may reject any or all bids, request clarifications, conduct interviews, and shortlist vendors. Questions must be submitted through U3P at least 96 hours before the deadline, and addenda issue at least 48 hours before submission. Bids remain valid for 45 days.

AECOM serves as Engineer for final design, bidding, and construction management, and a general contractor installs the equipment on a designated concrete pad at 2020 N Redwood Road, Salt Lake City, 84116. A companion Request for Bid for a Motor Control Center and Transformer package for the same project shares the August 5, 2026 deadline. That solicitation requires manufacturers or manufacturer-authorized local suppliers or distributors, with local warranty response within 24 hours.