一种复配絮凝剂处理垃圾膜滤浓缩液的研究  

Treating Concentration Solution of Landfill Leachate with Modified Cationic Tannin and Inorganic Composition Flocculants

作　　者：吕菁睿 李妍[1] 车玲 刘咏[1,3] 赵仕林[1] 廖洋[1,3] 

机构地区：[1]四川师范大学化学与材料科学学院,四川成都610066 [2]四川省交通运输厅公路规划勘察设计研究院,四川成都610041 [3]"特种废水处理"四川省高等学校重点实验室,四川成都610016

出　　处：《环境科学与技术》2015年第10期129-133,共5页Environmental Science & Technology

基　　金：国家自然科学基金:吸附与分离轻稀土离子的单宁螯合树脂合成方法(51173122);国家自然科学基金青年项目:介孔纤维SO42-/MxOy固体酸的调控合成及其构效关系(21406147)

摘　　要：以二甲胺(33%)、甲醛(37%)、杨梅单宁为原料制备出阳离子型改性单宁絮凝剂,并将其与三氯化铁无机絮凝剂进行复配用于处理垃圾渗滤液膜滤浓缩液,考察其对垃圾渗滤液膜滤浓缩液进行处理时的最优条件。试验表明,当阳离子型改性单宁絮凝剂为0.1 g/L,三氯化铁无机絮凝剂为4 g/L时,可以使垃圾渗滤液膜滤浓缩液的COD去除率达到60.43%,色度去除率达到91.67%。改性天然高分子絮凝剂无毒环保,与无机絮凝剂的复配处理垃圾渗滤液膜滤浓缩液具有较好的应用前景。Modified cationic tannin flocculant was prepared with dimethylamine（33%）,methanol（37%） and bayberry tannin as raw materials. And then this organic flocculant was compounded with ferric trichloride inorganic flocculant to treat concentration solution from landfill leachate by membrane filtration. The optimized condition was found through the experiments,and results showed that the removal rate of COD 60.43% and removal rate of color 91.67% in membrane filtration concentrate were obtained under the condition of modified cationic tannin flocculant 0.1 g/L,and ferric trichloride inorganic flocculant 4 g/L. Modified natural polymer flocculant is characterized as environmentally non-toxic,and thus compounding flocculant has better application prospect with inorganic flocculant in treating concentration solution from landfill leachate.

关 键 词：改性单宁絮凝剂 复配 絮凝沉降 膜滤浓缩液 去除率 

分 类 号：X705[环境科学与工程—环境工程]