垃圾渗滤液反渗透浓缩液回灌处理中试研究

将垃圾渗滤液经反渗透处理后产生的浓缩液进行回灌处理,研究了浓缩液回灌对COD和NH3—N的去除情况、水力负荷和回灌次数对浓缩液回灌效果的影响.结果表明,浓缩液回灌对COD和NH3—N有很好的去除效果,浓缩液回灌出水稳定后,COD去除率为81.6%,NH3—N去除率为70%.回灌浓缩液的水力负荷从32.38 mL/(L.d)上升到202.36 mL/(L.d),COD去除率从94%下降到70%;随着回灌次数的增加,COD去除率升高.     

Effect and Cost Research for Leachate Treatment in PAC/Fenton and Fenton/PAC Technology

To compare the treatment effects and the costs of coagulation/Fenton process and Fenton/coagulation process in leachate treatment,fresh and old leachates were respestively treated with these two techniques.The experimental results indicate that the highest chemical oxygen demand(COD)removal rate of Fenton reaction on leachate can be acquired under the conditions of pH=3.5,nH2O2/nFe2+=6,mH2O2/mCOD=3,and reaction time=4 h.Polyaluminium chloride(PAC)coagulation has the highest COD removal rate on leachate unde...