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Why is 2°treatment of water in …

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Why is 2°treatment of water in sewage treatment plant is called biological treatment

    • Posted by Bhumi Jain 8 years, 1 month ago

    CBSE > Class 12 > Biology
    • 2 answers

    Divya Sen 8 years, 1 month ago

    These microbes increases consumption of organic wastes and reduces BOD,hence 2º treatment is also called biological treatment.

    1Thank You

    Divya Sen 8 years, 1 month ago

    Because in 2ºtreatment, the organic matter present in the sewage water is consumed/decomposed by the aerobic microbes(by flocks-which grows after passing the 1º effluent into aeration tanks).

    1Thank You

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