Crown Point Case Study
Sludge Reduction

THE CHALLENGE

Due to capacity issues, the City of Crown Point was forced to either start planning for expensive capital expansions of the facility or to investigate alternative technologies that would increase capacity. In 2007 the City chose In-Pipe Technology® to improve the treatment capacity of the plant without capital improvements. In-Pipe’s goal is to improve the efficiency of the plant, reduce sludge production, improve effluent water quality and control odors at the plant.

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THE

SOLUTION

Since In-Pipe Technology started treatment in 2007, the amount of sludge produced per pound of influent TSS and influent BOD has gone down by 36% and 41% respectively. This improvement in efficiency has resulted in a 27% reduction in the total hauled sludge this year, a reduction that saves the City nearly $19,000 and the need to expand its facilities. In the 3 years since the In-Pipe project began, the WWTP has produced 3,120 fewer tons of biosolids compared to operation before In-Pipe treatment.

THE

RESULTS

50%

Aeration Energy Reduction

20%

Reduction RAS Pumping

27%

Reduced Sludge Production

50%

Reduced FeCl Consumption

30%

Reduction in Effluent TSS

Sludge Reduction

Crown Point Wastewater Treatment Plant

Crown Point, IL