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Bidjugde
JOB
(CMAR) Greenfield Water Reclamation Plant Phase IV Expansion
BID DATE
10/31/24 - 11:00
AGENCY
Mesa
ESTIMATE
n/a
SCOPE
The treatment processes at the GWRP consist of grit removal, primary clarifiers, activated sludge basins with aerobic and anoxic zones for Biochemical Oxygen Demand (BOD), Total Suspended Solids (TSS) and nitrogen removal, secondary clarifiers, filtration, and chlorine disinfection (with chlorine contact tanks and sodium hypochlorite feed system). The sludge from the primary clarifiers and secondary clarifiers are sent to the solids handling facility with thickening centrifuges, four anaerobic digesters, and dewatering centrifuges for treatment. Class B biosolids are produced from the anaerobic digestion and are sent to farmland as fertilizer. The digestion gas is used to fire the digester boilers and the surplus is flared.
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