微絮凝-金属膜过滤工艺处理微污染水源水  

Micro-Polluted Water Treated by Micro-Coagulation Filtration Using Metallic Membranes

作　　者：向嫄[1,2] 李伟英[1,2] 亓万琦[1,2] 慕杨 郑棹方 

机构地区：[1]同济大学环境科学与工程学院 [2]同济大学长江水环境教育部重点实验室,上海200092

出　　处：《水处理技术》2016年第12期92-95,共4页Technology of Water Treatment

基　　金：国家水体污染控制与治理科技重大专项(2012ZX07403-001);金属膜过滤特性及其在水处理中的应用研究(20141782);成都川力直饮水工程安全保障技术的研究(CDCL201501)

摘　　要：采用微絮凝-金属膜过滤组合工艺,以模拟的微污染水源水为处理对象,研究组合工艺对水中污染物的去除效果。混凝剂聚合氯化铝(PACl)投加量为25 mg/L,选用0.1μm和0.3μm孔径的金属膜滤芯,膜通量为700L/(m^2·h)。结果表明,微絮凝-金属膜过滤工艺中0.1μm和0.3μm金属膜对浑浊度的去除率分别为98.0%和97.3%,对COD_(Mn)的去除率分别为73.6%和63.7%;一个运行周期中金属膜跨膜压差由0 MPa增加到0.25 MPa;FT-IR检测结果表明膜表面形成的滤饼层中含有亲水性基团;接触角由初始83.1°降低到过滤后5.4°,膜表面亲水性增强。Micro-polluted Water Treatment of micro-coagulation filtration using metallic membranes was investigated. The coagulant was poly-aluminum chloride （PACl） and the dosage was 25 mg/L, pore sizes of metallic filters were 0.1 μm and 0.3 μm, membrane filtration kept 700 L/（m2.h） at constant flux. The results showed that the removal of turbidity was 98.0% by micro-coagulation filtration with 0.1 μm metallic membrane and 97.3% with 0.3μm, the removal of CODMn was 73.6% and 63.7% respectively; transmembrane pressure （TMP） of metallic membranes rose from 0 MPa to 0.25 MPa during a running cycle; hydrophilic groups were found in cake layer on the membrane surface using FT-IR; the contact angle of membrane surfaces was 83.1° initially and decreased to 5.4° which indicated that hydrophilicity of membrane was promoted,

关 键 词：微絮凝 金属膜 水处理 

分 类 号：X703.1[环境科学与工程—环境工程]