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City reports success in pilot odor-control program for County Line trunk sewer; plans expansion
Summary
Utilities staff said a biological/chemical/mechanical pilot to reduce sewer odors on the County Line trunk sewer has cut H2S and odor calls; staff described a combined biochem treatment and odor-scrubbing units installed earlier this year and proposed additional installations.
City utilities staff presented a status update on a multi-pronged odor-control pilot targeting the County Line trunk sewer and lift-station network.
The presenter, identified in the meeting as a utilities staff member, said the pilot uses biological augmentation (“Biochem”), targeted mechanical lift-station improvements, and commercial odor-control scrubber units to reduce hydrogen sulfide and other malodors. The presenter said the system covers roughly 600 miles of sanitary sewer in city service area, with the farthest upstream sewer stretching about 13.5 miles…
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