Continuing Effort to Eliminate Odors at Orange County's Wastewater Treatment Plantsby Robert Ooten, CSDOC, Fountain Valley, United States,
Mary C. Lee, CSDOC, Fountain Valley, United States,
Mallika Sarkar, CSDOC, Fountain Valley, United States,
Abstract: The County Sanitation Districts of Orange County (CSDOC), California own and operate two wastewater treatment plants. Reclamation Plant No. 1, in Fountain Valley, treats approximately 60 million gallons per day (mgd) of sewage. Treatment Plant No. 2, in Huntington Beach, treats about 200 mgd. Both have received odor complaints from nearby residents. Growing public concern prompted CSDOC to install and operate a number of odor control facilities at each plant. Constructed at a cost of more than $30 million, these include: Covered processes with ventilation for odor capture; Chemical addition systems for odor control; and Caustic scrubber systems for odor reduction. The Districts still receive a few odor complaints, though they have consistently met state standards for hydrogen sulfide concentration at plant boundaries. These have been traced mostly to scrubber discharge. The trends in complaints with the implementation schedule for odor control facilities are illustrated.
Subject Headings: Wastewater treatment plants | Odors | Control systems | Chemical treatment | Chemical processes | Air pollution | Sewage | Sulfides | North America | California | United States
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