危险废物安全填埋场废水处理工程实例

Engineering Example of Treatment of Wastewater From Hazardous Waste Landfill

危险废物安全填埋场渗滤液的水质与垃圾渗滤液相比,其有机化合物和氨氮等污染物的浓度偏低,含有一定量的重金属和难降解有机物。某固废处置有限公司废水处理系统的设计水量为200 m^3/d,采用"微电解+芬顿氧化+重金属还原+混凝沉淀+水解酸化+接触氧化"处理工艺,出水可稳定达到当地污水处理厂接管标准(ρ(COD)≤500 mg/L),再采用"高级氧化+混凝沉淀"深度处理工艺,出水可达到回用水标准(ρ(COD)≤100 mg/L)。具有效果明显、运行稳定以及操作简便等优点。

Compared with landfill leachate, the concentration of organic compounds and ammonia nitrogen and other pollutants in hazardous waste safe landfill leachate waslower, and it contained a certain amount of heavy metals and refractory organic compounds. With the design of wastewater treatment system of a solid waste disposal Co. Ltd. for 200 m^3/d, using ＂ micro electrolysis ＆ fenton oxidation ＆ heavy metal reduction ＆ coagulation sedimentation ＆ hydrolysis acidification ＆ contact oxidation＂process, the effluent quality could stable meet the takeover standard of the local sewage treatment plant（p （COD） ≤ 500 mg/L）. In the advanced treatment process of ＂advanced oxidation ＆ coagulation sedimentation＂, the effluent quality could meet the standard of water reuse（ρ（COD）ρ 100 mg/L）. And this process had the advantages of obvious effect, stable operation and easy operation.