混凝-超滤组合工艺处理城市污水处理厂出水效能的研究  

EFFECTIVENESS OF COMBINED COAGULATION-ULTRAFILTRATION PROCESS ON TREATING MUNICIPAL SEWAGE EFFLUENT

作　　者：沈智育[1,2] 沈耀良[1] 郭海娟[2] 

机构地区：[1]苏州科技学院环境科学与工程学院,江苏苏州215009 [2]台州学院建筑工程学院,浙江台州317000

出　　处：《水处理技术》2013年第11期69-72,共4页Technology of Water Treatment

基　　金：江苏省环境科学与工程重点实验室开放课题(361111201);江苏省普通高校研究生科研创新计划项目(CXZZ11_0955);苏州科技学院研究生科研创新计划项目(SKCX11S_016)

摘　　要：采用混凝-超滤组合工艺处理苏州市新区污水处理厂二级出水。结果表明,比较混凝沉淀运行方式,当超滤结合在线混凝预处理时,运行过程中超滤膜跨膜压差(TMP)增加缓慢,出水水质总体偏优。在本研究条件下,当温度控制在30℃、PAC投加量为30 mg/L、pH为8时,在线混凝-超滤组合工艺的处理效果达到最佳,其对TOC、UV254、浊度、TN、TP的去除率分别达31.7%、39.7%、97.7%、30.3%和79.1%,经过6 h运行后超滤膜TMP增加0.067MPa,并能长时间稳定运行。Combined coagulation-ultrafiltration process was used to treat the effluent of Suzhnu high-technology district sewage plant. The result showed that comparing traditional coagulation with the ultrafiltration combined with in-line coagulatioil process, the transmembrane pressure （TMP） of ultrafiltration membrane increases slowly and the effluent quality was overall superior when treating secondary effluent of Suzhou high-technology district sewage plant. When temperature was controlled at 30 ℃, the dosage of PAC was 30 mg/L and pH was 8, the quality of ultra-filtration effluent is the best, and the removal rate ofTOC, UV254, turbidity, TN and TP is 31.7%, 39.7%, 97.7%, 30.3% and 79.1%, respectively. After 6-hour running, TMP of ultrafiltration membrane increased by 0.067 MPa and the equipment was stable.

关 键 词：混凝 超滤 城市污水 处理效能 TMP 

分 类 号：X799.3[环境科学与工程—环境工程]