A Resolution of the City of Sunrise, Florida, approving the “Project Agreement between the City of Sunrise and Hazen and Sawyer, P.C. for Project Agreement No. 21-009-HS Sawgrass WWTP – DAF Thickening Process Improvements Design and Bidding Services;” and providing an effective date. City Manager Mark Lubelski. Timothy Welch, Utilities Director.

465.66.70.535.506502 - Construction Design

Project 5141SG - SG WWTP Dissolved Air Floatation System Rehabilitation

The biosolids treatment system at the Sawgrass Wastewater Treatment Plant (WWTP) utilizes a Dissolved Air Flotation (DAF) thickening process to thicken waste activated sludge (WAS) produced by the secondary treatment system. The purpose of the DAF process is to thicken the WAS by removing water through use of air floatation equipment. This thickening is required for the additional downstream biosolids centrifuge dewatering process to function adequately. The DAF facility consists of two (2) parallel DAF treatment units. DAF Unit No. 1 was installed in 1987, and DAF Unit No. 2 was installed in 1996. The mechanical and process equipment at the two DAF units and the steel canopy roof covering the units have reached the end of their useful life and require replacement.

The Utilities Department developed Project Agreement 21-009-HS with Hazen and Sawyer P.C., one of the City's water and wastewater engineering consultants, to prepare contract documents for design, permitting, and bid assistance for the improvements for the DAF system replacement. These improvements will help the Plant Operations Division provide adequate and reliable treatment of wastewater, and continue to meet operational permit requirements.

This project is included within the City's 5-year water and wastewater capital improvement plan in item 26.b. in RFQ No. (20)-03-05-VH.