生物接触氧化-电凝聚复合工艺处理垃圾渗滤液

Landfill leachate treatment by biological contact oxidation-electrocoagulation complex process

为了探索高效垃圾渗滤液处理工艺,采用生物接触氧化-电凝聚复合工艺处理垃圾渗滤液。试验结果表明,本工艺适于处理COD<5000 mg/L的垃圾渗滤液,最高容积负荷可达6.56 kg COD/m3.d,COD去除率最高可达84.63%,平均BOD去除率可达91.25%,NH4-N去除率最高可达86.13%,处理后的垃圾渗滤液可达到国家污水二级排放标准,电耗为9元/m3水,铁耗为1元/m3水。

For the purpose of investigating efficient landfill leachate treatment process,biological contact oxidation-electrocoagulation process was used to treat landfill leachate. Results showed that this process was efficient for landfill leachate with COD concentration below 5000 mg/L, maximal volume loading was 6.56 kg COD/ m^3 . d,maximal COD removal rate was 84.63% , average BOD removal rate was 91.25% , maximal NH4-N removal rate was 86.13 %, and effluent could meet national consuming 9 yuan/m^3 and iron consuming 1 yuan/m^3. sewage second-level discharge criterion with electricity