HLA Engineering and Land Surveying, Inc. - Sunnyside Sludge Dewatering Improvements

Sunnyside Sludge Dewatering Improvements

Improvements included a new screw press, polymer feed system, dewatered solids screw conveyors, sludge feed pumps, piping, sludge mixing/holding tank, electrical control system, and sludge storage and drying beds.   An existing building was remodeled to house the new dewatering system equipment.  The dewatering system improvements design provided the ability to process sludge stored in the existing lagoon or directly from the anaerobic digesters.

HLA provided design plans and specifications,  coordination with the Washington State Department of Ecology, bidding services, construction observation and administration, and project close-out. 

Source of Project Funding

  • City Sewer Reserve Funds

Total Project Cost: $1,830,000

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