【摘要】 根据上海城市污水处理厂处理工艺和污泥的物理化学特性,将污泥分为生化污泥和化学污泥,提出了生化污泥与矿化垃圾混合填埋,化学污泥固化填埋两种污泥填埋工艺。研究表明,生化污泥与矿化垃圾按10∶7的比例进行混合填埋可以达到污泥填埋的土力学要求,并可加速污泥厌氧产气反应和有机质的降解,缩短污泥稳定化的时间;污泥固化填埋采用一种新型的M1镁系胶凝固化剂,加入量为5%时,可以达到污泥的填埋要求,并对污泥中的重金属具有固化作用。更多还原

【Abstract】 By the genesis and the nature of the wastewater sludge,it is classified into two categories:the biological sludge and the chemical sludge,which are treated by different ways.The biological one is blended with aged urban solid waste at ratio of 10∶7 and the chemical one is solidified by magnetic solidified agent M1 with addition of 5%,and finally both two shall be disposed by landfill.The experimental research proved that the anaerobic gas generation and degradation of the organic substances in the blended biological sludge were speeded up,so the stabilization time decreased and also the soil mechanic properties improved to meet the requirement of landfill.For the solidification of chemical sludge,the heavy metals were fixed,the release was avoided and the physical feature of the solidified chemical sludge was suitable to landfill.更多还原