Parker Water and Sanitation District

Parker Water and Sanitation District

Location: Parker, CO

The Parker North Water Reclamation plant underwent a major upgrade and expansion. Included in the improvements was an advanced water treatment process for the reduction of phosphorous from the wastewater outfall. For Parker North, the maximum phosphorous concentration was set well below what was attainable through a conventional activated sludge process. 

The treatment processes consist of pH adjustment, followed by alum and polymer addition for physical/chemical removal of phosphorous. The removal mechanism involves two-stage, tapered flocculation, inclined plate settling, and filtration using a dual-media filter bed of silica sand and anthracite. The anthracite removes the larger floc particles, while the silica sand polishes the smaller floc particles that slip through the anthracite.

Instrumentation and controls consist of a Tonka Water’s PLC control panel, which automatically backwashes the filters based on high turbidity, loss of head, timer or operator initiation. The duration of the backwash is also adjustable by the operator.

The inlet water to the UTS™, summarized below, is the effluent of a conventional activated sludge process final clarifier. The UTS™ treatment process has been highly efficient in meeting the effluent water quality required by NPDES permit.

Raw Water
Finished Water
Phosphorous0.25 mg/L0.016 mg/L

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