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    • 2. 发明授权
    • Method of treating organic waste water
    • 有机废水处理方法
    • US4153544A
    • 1979-05-08
    • US825847
    • 1977-08-18
    • Katsuto OkadaHideo YamamotoSusumu TeraguchiNorio Ishibashi
    • Katsuto OkadaHideo YamamotoSusumu TeraguchiNorio Ishibashi
    • C02F3/00C02F3/12C02F3/30C02C1/06
    • C02F3/301C02F3/006C02F3/12C02F3/302Y02W10/15
    • A method of treating organic waste water in an aeration tank is characterized by the fact that (1) the dissolved oxygen content in the aeration tank is adjusted to be within the range of 1.5-4.5 ppm; (2) the temperature of the waste water is controlled to be within the range of 15.degree.-40.degree. C. and the residence time of the waste water in the aeration tank is set at ten or more days if the ratio of the total carbon content to the nitrogen content of the organic materials contained in the waste water (TOC/N) is not less than 5, and the temperature of the waste water is controlled to be within the range of 20.degree.-40.degree. C. and the residence time of the waste water in the aeration tank is set at ten or more days if the TOC/N is less than 5 and not less than 2.5, and (3) the activated sludge content in the aeration tank is kept constant by controlling the amount of COD to be removed according to the equation:.sigma.T=33.5.times.1.058.sup.(T-20)wherein T is a temperature (.degree.C.) of the waste water to be treated, and .sigma.T is COD(Cr) to be removed (Kg)/ATP content in the aeration tank (Kg)/day at T.degree. C.
    • 在曝气池中处理有机废水的方法的特征在于:(1)曝气池中的溶解氧含量调节在1.5-4.5ppm的范围内; (2)将废水的温度控制在15〜-40℃的范围内,将曝气池内废水的停留时间设定为10天以上, 废水中含有的有机物质的含量(TOC / N)不小于5,废水的温度控制在20〜-40℃的范围内, 如果TOC / N小于5且不小于2.5,则曝气池中废水的时间设定为10天以上,(3)曝气池中的活性污泥含量通过控制量 的COD要根据下列方法去除: