鸟粪石结晶法前处理垃圾渗滤液  

Struvite Precipitation in Landfill Wastewater Pretreatment

作　　者：裴红洋[1] 徐远[1] 蒋京东[1] 马三剑[1] 

机构地区：[1]苏州科技学院环保应用技术研究所,江苏苏州215011

出　　处：《苏州科技学院学报（工程技术版）》2007年第4期34-36,共3页Journal of Suzhou University of Science and Technology （Engineering and Technology）

摘　　要：垃圾渗滤液是一种高有机浓度、高氨氮含量的废水,用鸟粪石结晶沉淀法对苏州某垃圾填埋场的垃圾渗滤液进行前处理。当反应pH值在8.5～11.0,n(Mg2+)∶n(NH4+)∶n(PO43-)为1∶1∶1时,氨氮的去除率为91.5%～97.0%;控制反应pH值为9.5,n(Mg2+)∶n(NH4+)∶n(PO43-)为1.25∶1∶1.1,氨氮的去除率可达97.7%,同时对COD去除率达到65.9%,渗滤液UV260/COD从8.7×10-4降至6.3×10-4,可生化性有了较大的改善。Landfill wastewater is a kind of wastewater that contains high organic and NH3-N concentration. The paper discusses the pretreatment of the landfill in a Suzhou landfill fied by the struvite precipitation. When the pn rangs from 8.5 to 11.0 and the n（ng^2＋）：n（NH4^＋）：n（PO4^3-）at 1：1：1, the removal efficiency of NH3-N can remain between 91.5% and 97.0%; when the pn at 9.5 and the n（Mg^2＋）：n（NH4^＋） ：n（PO4^3-） at 1.25：1：1.1, the removal efficiency of NH3-N can remain as high as 97.7%, and the COD removal efficiency remains at 65.9%, and UV260/ COD of the extravasate reduces from 8.7× 10^4 to 6.3×10^4. The biological degradbility is improvd greatly.

关 键 词：鸟粪石 结晶沉淀 垃圾渗虑液 前处理 

分 类 号：X703[环境科学与工程—环境工程]