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Effluent toxicity testing using nitrifiers and Microtox™

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In an effort to develop a less expensive method of assessing wastewater toxicity, two bacterial alternatives to Ceriodaphnia were tested: the commercially available Microtox™ procedure (using Photobacterium phosphoreum) and a nitrifier respiration procedure. Forty-four biologically treated municipal wastewaters were evaluated. Neither the Microtox nor the nitrifier test is sufficiently sensitive to detect acute Ceriodaphnia toxicity when testing biologically treated municipal wastewaters. The 7-day chronic Ceriodaphnia procedure is more sensitive than the 48-hour acute Ceriodaphnia test, with 14 of the 16 wastewaters tested for chronic toxicity exhibiting toxicity using 100% wastewater.
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Keywords: Ceriodaphnia; Microtox™; Photobacterium; bioassay; effluent; inhibition; nitrifiers; respirometry; toxicity

Document Type: Research Article

Publication date: 1992-05-01

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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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