石灰混凝-纳滤法深度处理垃圾渗沥液  

Using Lime Coagulation-nanofiltration Method on Advanced Treatment of Waste Leachate

作　　者：许丽华[1] 戚丽[1] 刘恩华[1] 杜启云[2] 

机构地区：[1]天津工业大学中空纤维膜材料与膜过程教育部重点实验室,天津300160 [2]天津膜天膜工程技术有限公司,天津300160

出　　处：《环境卫生工程》2011年第5期44-46,48,共4页Environmental Sanitation Engineering

摘　　要：采用石灰混凝法处理垃圾渗沥液生化出水,考察了石灰投加量、混凝剂种类对产水COD、氨氮、pH、色度、硬度的影响,并对石灰混凝前后产水的纳滤通量和出水水质进行对比。结果表明:石灰混凝可以有效降低90%以上的硬度,COD、氨氮、色度去除率为30%～60%。垃圾渗沥液生化出水经混凝后进行纳滤处理可有效提高通量,出水中COD、氨氮等能够稳定地达到排放标准。The method of lime coagulation was used to deal with waste leachate which had been disposed by tubular membrane bioreaction （T-MBR）. The influences of dosage of lime and type of coagulant on COD, ammonia nitrogen, pH, chroma, and hardness of the effluent were investigated. And nanofihration flux and water quality of effluent before and after lime coagulation were compared. The results showed that lime coagulation can effectively remove more than 90% in hardness. Removal rate of COD, ammonia nitrogen and chroma was between 30% and 60%. Waste leachate which had been disposed by T-MBR after coagulation treatment can effectively improve membrane flux of nanofiltration, and COD and ammonia nitrogen of the effluent can steadily meet emission standard.

关 键 词：垃圾渗沥液 石灰 混凝 纳滤 膜通量 

分 类 号：X703.1[环境科学与工程—环境工程]