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Simultaneous Treatment of Graywater and Waste Gas in a Biological Trickling Filter

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Biological processors are typically used in liquid- and gas-phase remediation as separately staged systems. This research presents a novel application of a biotrickling filter operated for simultaneous treatment of contaminants present in graywater and waste gas (ammonia and hydrogen sulfide). Liquid- and gas-phase contaminants were monitored via bioreactor influent/effluent samples over the course of a 300-day study. An oxygen-based bioassay was used to determine spatial location of the functional groups involved in the biodegradation of surfactants, dissolved hydrogen sulfide, and ammonium. Results indicated that a biotrickling filter is able to support the wide range of microbial species required to degrade the compounds found in graywater and waste gas, maintaining conversion efficiencies greater than 90% for parent surfactant compounds and waste gas constituents. These results provide evidence of an operational scheme that potentially reduces footprint size and cost of graywater/waste gas biotreatment.
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Keywords: biotrickling filter; graywater; hydrogen sulfide; nitrification; sustainable systems

Document Type: Research Article

Publication date: 2008-11-01

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  • Water Environment Research (WER) is published monthly, including an annual Literature Review. A subscription to WER includes access to the latest content back to 1992, as well as access to fast track articles. An individual subscription is valid for 12 months from month of purchase.

    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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