低温地表水高效除浊工艺  

Technology of Highly Effective Turbidity Removal from Surface Water at Low Temperature

作　　者：薛罡[1] 闫丹丹[1] 袁琪[1] 

机构地区：[1]东华大学环境科学与工程学院,上海201620

出　　处：《东华大学学报（自然科学版）》2007年第1期108-111,共4页Journal of Donghua University(Natural Science)

基　　金：霍英东基金优选资助课题(94004);上海市自然科学基金(04ZR14010);北京市水质科学与水环境恢复工程重点实验室开放基金

摘　　要：采用无机高分子混凝剂聚合氯化铝铁(PAFC),并结合管式微涡混合器、网格反应池、小间距斜板沉淀池、快滤池组合而成的一体化净水装置,对北方地区低温地表水的除浊进行试验研究.试验结果表明,当混合时间为3s,PAFC投药量为60mg/L,反应时间10min,沉淀池上升流速高达3.5mm/s时,低温低浊及高浊地表水经本工艺净化后,水浊度依然小于2NTU,并可降低工艺投资及运行费用,具有明显的经济效益.A technology of highly effective turbidity removal from surface water at low temperature in north China is investigated. It is adopted for a new kind of inorganic coagulant of polymeric aluminum ferric chloride. The integrated devices are combined which include the tube mixer, gridding reactor tank, small space slanting board settling pond and rapid filter. Results show that when mixing time is 3 seconds, the dosage of PAFC is 60 mg/L, the reacting time is only 10 minutes, the upward speed is up to 3. 5 mrn/s, and the average turbidity after sedimentation is still less than 2 NTU. This technology reduces the operational cost simultaneously. It has obvious economic benefit.

关 键 词：低温地表水 混凝剂 聚合氯化铝铁 除浊 

分 类 号：TU991.2[建筑科学—市政工程]