【摘要】 经生物处理后垃圾渗滤液尾水的CODCr约在500~800 mg/L,此类CODCr除部分为有机物外,还含有大量还原性无机类物质,因此不适合采用常规的生物处理方法进行深度处理。本研究在投药量较低的情况下,采用水泥、NaAlO2和Ca(ClO)2等物质联合作用,取得较好的尾水CODCr去除效果(达到国家二级排放标准)。机理研究表明:渗滤液尾水CODCr的去除主要通过两种途径:一方面为常规的氧化作用,另一方面通过特殊的水化作用,可去除部分还原性无机类物质。更多还原

【Abstract】 COD_Cr of effluents from traditional biological treatment process is about 500～800 mg/L,and both the refractory substances and inorganic compounds in leachate contributed to COD_Cr.Combined cement,NaAlO₂ with Ca（ClO）₂ were applied to advanced treatment of the leachate from aged refuse bio-filter process,and it can meet the second class leachate discharge standards(COD_Cr <300 mg/L).It is presumed that the removal of COD_Cr in leachate resulted from two ways:one is the oxidation,while hydration is also an important way to remove the reduction inorganic compounds in leachate.更多还原