混凝-吸附联合处理含铬废水的研究

摘要

Polymeric phosphate-aluminum ferric chloride (PPAFC) flocculent was used to perform a coagulation treatment on wastewater containing chromium, and then Al-modified benlonite was used to conduct a adsorption treatment on the wastewater containing chromium. The results show that the removal ratio of total chromium can exceed 99. 8 % when PPAFC is 40 mg/L. Al-modified bemonite 2. 0 g/L. room temperature. The mass concentration of total chromium in the discharged water meets the Electroplating Pollutant Discharge Standards (GB 21900-2008).%采用新型混凝剂聚磷氯化铝铁(PPAFC)对含铬废水进行混凝处理；再采用铝化改性膨润土对含铬废水进行吸附处理.结果表明:在PPAFC 40 mg/L,铝化改性膨润土2.0 g/L,室温的条件下,总铬的去除率超过99.8％,出水中总铬的质量浓度达到《电镀污染物排放标准》(GB 21900-2008)要求.