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Author      Title/Abstract      

The Do It Yourself (DIY) Approach to Treating Extreme H2S Odors in Little River, South Carolina
Author: Peter Schuler, P.E., Brown and Caldwell; Fred Kisner, Little River Water & Sewerage Company
Date: 4/912
Preprint, Odors and Air Pollutants 2012, Louisville, Kentucky, April 15-18, 2012

The Morgan Street Pump Station (MSPS) is Little River Water and Sewer Company, Inc.’s (LRWSC) main pump station and is located on Morgan Street adjacent to the Intracoastal Waterway. Odor emissions from this pump station are reported to be relatively high, and can be detected as much as one mile downwind of the pump station in the summer time. These emissions arise from sulfide production in upstream sewers and force mains. Continuous H2S monitoring has detected gas phase H2S concentrations frequently exceeding 100 ppm in the wet well with peak concentrations between 400 – 500 ppm H2S. Since there are no odor treatment facilities at the station, induced air from the influent sewer and normal cyclic level changes in the wet well will cause out-leakage with considerable odor potential. Just one cubic foot of odorous gas will require about 10,000 cfm to dilute to the odor threshold for H2S. This paper / presentation will discuss the evaluations conducted to select package bioscrubber / biofilter unit manufactured by BIOREM Technologies. These evaluations also looked at adding chemicals upstream of the MSPS, bulk media biofiltration, biocubes, bioscrubbing, chemical scrubbing, activated carbon and various combinations of these odor control technologies. This paper will discuss the advantages and disadvantages of each technology, actual construction costs for the selected odor control unit and projected operating costs and maintenance requirements. LRWSC acted as the general contractor on this project and will share lessons learned from the experience. As you will learn, you too can DIY your own odor control system.