PID技术在垃圾渗沥液处理中的应用

Study on PID Technology in Leachate Treatment of Domestic Refuse

PID技术是废水处理中提高氮、磷去除的技术。它通常由两个或三个相同的氧化沟组成 ,这些氧化沟周期性处于好氧、缺氧或沉淀等工作状态 ,一个工作周期 4h。垃圾处理厂采用这一技术处理垃圾渗沥液 ,处理效果好 ,费用低。主要工艺参数为 ,污泥浓度 3 .0 - 5 .5g/L、泥龄 15 - 30d、污泥产率 0 .6 - 0 .9kg(MLSS) /kg(BOD)·d、反硝化速率 2 6g(N) /kg(MLSS)

PID is a technique used for improving nitrogen and phosphorous removal in wastewater treatment.It usually consists of two or three oxygen ditches which are standing in the states of aerobic,anoxic and sedimentation periodically.The result showed that the treatment efficiency was good with lower cost.The major technological parameters include sludge concentration of 3.0-5.5g/L,sludge retention time(SRT) 15-30d,sludge yield 0.6-0.9Kg(MLSS)/Kg(BOD) 5·d,denitrification rate 26g(N)/Kg(MLSS)·d.