Using an Aeration Tank as a Bioscrubber for Odor and VOC Control
Abstract:An odor and air emissions control and wastewater treatment system upgrade was developed at a facility that provides dewatering of liquid residuals. The treatment system upgrade uses existing tankage as a biological reactor for odor and air emissions control from the site's dewatering building and for reduction of biochemical oxygen demand (BOD) that is currently discharged to the sewer. The aeration tank operates as a bioscrubber and removes contaminants from the building air through a combination of chemical and biological processes. Stack testing results indicated the system was effective at reducing emissions and that it complied with air permit limits for ammonia, hydrogen sulfide, VOCs and particulates. Odor modeling results indicate the dilution to threshold odor intensity (D/T) from the aeration tank for ammonia and hydrogen sulfide will be less than 5, thus obviating the need for additional controls.
Document Type: Research Article
Publication date: February 1, 2008
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