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    • 5. 发明授权
    • Sludge digestion method
    • 污泥消化法
    • US5876613A
    • 1999-03-02
    • US930444
    • 1998-01-16
    • Christophe BonninGabriel Coriton
    • Christophe BonninGabriel Coriton
    • C02F1/50C02F11/12C02F11/14
    • C02F1/50C02F11/12
    • The invention relates to a process for the stabilization of sludge or other waste with a high organic matter content derived from treatment operations of industrial and/or urban effluent, or from drinking water treatment operations of surface or ground water, said sludge containing at least one part dry matter essentially made up of fermentable organic matter, characterized in that it is conducted at ambient temperature and atmospheric pressure, and in that it comprises a stage consisting of acidifying said sludge with at least one strong acid to a pH of between 1.5 and 3.5, a stage consisting of adding at least one nitrite salt to said sludge at a concentration of between 10 and 500 mg N.NO.sub.2 /l sludge, and in that it consists of maintaining the mixture made up of said sludge, said acid and said nitrite salt in contact for a period of between 5 minutes and 12 hours, under permanent or intermittent mixing.
    • PCT No.PCT / FR96 / 00484 Sec。 371日期1998年1月16日 102(e)1998年1月16日PCT PCT 1996年6月29日PCT公布。 公开号WO96 / 30311 PCT 日期1996年10月3日本发明涉及一种稳定污泥或其他废物的方法,所述污泥或其他废物具有来源于工业和/或城市污水的处理操作或来自地表或地下水的饮用水处理操作的高有机物含量, 含有至少一部分干物质的污泥,其基本上由可发酵有机物组成,其特征在于其在环境温度和大气压下进行,并且其包括由至少一种强酸将酸性酸化至pH 介于1.5和3.5之间的阶段,包括以10至500mg N.NO2 / l污泥的浓度向所述污泥中加入至少一种亚硝酸盐的阶段,并且其中包括维持由所述污泥组成的混合物, 所述酸和所述亚硝酸盐在永久或间歇混合下接触5分钟至12小时。