STP891

    Acute and Chronic Toxicity to the Fathead Minnow, Pimephales promelas, of Effluents from a Treatment Plant Receiving Dye and Pigment Processing Wastewater

    Published: Jan 1985


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    Abstract

    Ninety-six hour, static acute, and continuous-flow early life-stage (ELS) chronic toxicity tests, using the fathead minnow (Pimephales promelas), were conducted to evaluate the toxicity of effluents from a pilot scale activated sludge (AS) treatment system receiving dye and pigment wastewater. In the first test with a powdered activated carbon (PAC) dosage of 1800 mg/L of influent, survival was the most sensitive measure of effect in the ELS test. The highest effluent concentration tested (10%) was lethal to the embryos and larvae. No adverse effect on survival or growth was observed at lower effluent concentrations (5.0 to 0.63%). The maximum acceptable toxicant (effluent) concentration (MATC) was between 10 and 5%. Ten 96-h median lethal concentration (LC50) values from static acute tests ranged from 12.9 to greater than 80%. In the second test at a PAC dosage of 1000 mg/L of influent, growth was the most sensitive measure of effect in the ELS test. Larval growth was significantly reduced at the highest effluent concentration tested (20%). The MATC was between 20 and 10%. Seven 96-h LC50s from static acute tests ranged from 28.3 to greater than 80%. The effluent from the treatment system receiving the higher PAC dosage of 1800 mg/L was more toxic than the effluent from the treatment system receiving the lower PAC dosage of 1000 mg/L. However, the influent to the treatment system receiving the higher level of PAC also was more acutely toxic.

    Keywords:

    freshwater, fishes, effluents, acute toxicity, chronic toxicity, early life stage, fathead minnow, aquatic toxicology, hazard assessment, dye and pigment wastewater


    Author Information:

    Pickering, QH
    Aquatic biologist, U.S. Environmental Protection Agency, Environmental Research Laboratory—Duluth, Newton Fish Toxicology Station, Cinncinnati, OH

    Shaul, GM
    Physical scientist and environmental engineer, Industrial Environmental Research Laboratory, U.S. Environmental Protection Agency, Cincinnati, OH

    Dostal, KA
    Physical scientist and environmental engineer, Industrial Environmental Research Laboratory, U.S. Environmental Protection Agency, Cincinnati, OH


    Paper ID: STP33590S

    Committee/Subcommittee: E47.01

    DOI: 10.1520/STP33590S


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