共沉淀法处理垃圾渗滤液研究  

RESEARCH ON TREATMENT OF REFUSE LEACHATE BY COPRECIPITATION METHOD

作　　者：白轩[1] 潘大伟[2] 王翠艳[3] 胡筱敏[1] 

机构地区：[1]东北大学资源与土木工程学院,沈阳110004 [2]辽宁科技大学化学工程学院,辽宁鞍山114044 [3]鞍山师范学院,辽宁鞍山114007

出　　处：《环境工程》2013年第S1期285-287,291,共4页Environmental Engineering

摘　　要：对辽宁省鞍山市某生活垃圾卫生填埋场的晚期垃圾渗滤液进行预处理,选择MgO和磷矿粉两种矿物,利用共沉淀法去除垃圾渗滤液中的氨氮,用于制备磷铵镁复合肥,实现垃圾渗滤液的资源化利用。实验结果如下:MgO与磷矿粉配合使用,能够较好地去除垃圾渗滤液中COD和氨氮。采用MgO、磷矿粉共沉淀法生成磷铵镁复合肥具有可行性,同时可为后续生化处理创造良好的条件;在给定条件下(氨氮浓度1200 mg/L,COD 3180 mg/L),垃圾渗滤液COD去除的最优实验条件为MgO添加量5.0 g/L、磷矿粉添加量100 g/L,反应时间4 h,处理后COD去除率为62.1%,氨氮去除率为87.5%;氨氮去除的最优实验条件为MgO添加量10 g/L、磷矿粉添加量60 g/L、反应时间4 h,处理后COD去除率为42.1%,氨氮去除率为96.1%。The pretreatment test was carried out for the leachate from a landfill site in Anshan City of Liaoning Province. The ground phosphate rock and MgO were selected,and coprecipitation method was used to remove NH3-N in the leachate,which could be used to prepare a composite fertilizer. The test result shows that the combination of MgO and ground phosphate rock can remove effectively COD and NH3-N in the leachate. Under the conditions of NH3-N = 1200mg/L,COD = 3180 mg/L,Mgo = 5. 0 g/L,ground phosphate rock = 100 g/L and reaction time = 4h,the removal rate of COD and NH3-N in the leachate can be 62. 1% and 87. 5% respectively after treatment by coprecipitation method.

关 键 词：共沉淀法 预处理 渗滤液 磷矿粉 

分 类 号：X703[环境科学与工程—环境工程]