Control of volatile organic compound emissions using a compost biofilter

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Abstract:

Laboratory and field experiments were conducted using a pilot-scale compost biofilter (approximately 5.7 m3/min) to determine the potential of using biofiltration for removing volatile organic compounds (VOCs) from gas streams at publicly owned treatment works. Six compounds commonly found in wastewaters (benzene, trichloromethane, dichloromethane, toluene, tetrachloroethene, and trichloroethene) were selected for quantitative evaluation of removal efficiency. Gas fluxes through the biofilters ranged from 0.3 to 1.8 m3/m2·min with corresponding pressure drops of 0.1 to 0.7 kPa. Removals of aromatic VOCs averaged greater than 80% during an 8.5-month field study and were typically greater than 90 to 95%, despite highly variable inlet concentrations. Removals of chlorinated VOCs were inconsistent and ranged from none to more than 60%. Low removals of the chlorinated compounds were believed to be due, in part, to the low inlet airstream concentrations, which were generally less than 70 ppb. Removal of H2S and odors was excellent throughout the studies, consistent with the findings of other investigators.

Keywords: ACTIVATED SLUDGE; AROMATIC HYRROCARBONS; BIOFILTER; COMPOST; ODORS; VOLATILE ORGANIC COMPOUNDS

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/106143095X131736

Publication date: July 1, 1995

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  • Water Environment Research® (WER®) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year.

    Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
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