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    • 8. 发明授权
    • Method for stabilizing and conditioning urban and industrial wastewater sludge
    • 城市和工业废水污泥的稳定和调理方法
    • US07497956B2
    • 2009-03-03
    • US10497059
    • 2002-11-29
    • Jean-François BlaisGuy MercierPatrick Drogui
    • Jean-François BlaisGuy MercierPatrick Drogui
    • C02F11/14
    • C02F11/14C02F1/52C02F1/5236C02F1/56C02F1/66C02F1/72C02F1/722C02F1/725C02F11/06C02F11/121C02F2209/06Y10S210/928
    • The invention concerns a method for stabilizing and conditioning wastewater sludge. The invention is characterized in that it consists in treating sludge in an acid environment (3.0≦pH≦5.0), with an inorganic acid and two oxidizing agents, that is a ferric iron salt and hydrogen peroxide. The ferric iron salt is used in such an amount as to obtain a concentration ranging between 5 and 40 kg of Fe per ton of dry sludge; the hydrogen peroxide is used in such an amount as to obtain a concentration ranging between 5 and 40 kg of H2O2 per ton of dry sludge; mixing the treated sludge for a time interval sufficient to stabilize the sludge and improve its dehydrability; then flocculating the stabilized sludge by adding an organic polymer; then dehydrating the flocculated sludge. Said method enables to significantly improve the dehydrability properties of the sludge while increasing the dry solid content during its mechanical dehydration.
    • 本发明涉及一种稳定和调理废水污泥的方法。 本发明的特征在于它包括用酸性环境(3.0 <= pH <= 5.0)处理污泥中的无机酸和两种氧化剂,即三价铁盐和过氧化氢。 三氯铁酸盐的使用量要达到每吨干污泥5至40公斤Fe之间的浓度; 过氧化氢的使用量要达到每吨干污泥5至40公斤H2O2的浓度; 将经处理的污泥混合足够的时间间隔以稳定污泥并提高其脱水性; 然后通过加入有机聚合物絮凝稳定的污泥; 然后使絮凝的污泥脱水。 所述方法能够显着改善污泥的脱水性能,同时在机械脱水过程中增加干固体含量。