长江水源水厂低温低浊期排泥水直接回用试验研究  

STUDY ON DIRECT REUSING OF WATERWORKS SLUDGE WATER TAKEN RAW WATER FROM YANGTZE RIVER IN LOW TEMPERATURE AND LOW TURBIDITY PERIOD

作　　者：周华[1,2] 陈卫[2] 孙敏[2] 付永华[2] 

机构地区：[1]华东勘测设计研究院,浙江杭州310014 [2]河海大学环境学院,江苏南京210098

出　　处：《水处理技术》2010年第9期93-96,共4页Technology of Water Treatment

基　　金：国家科技支撑项目(2006BAB17B02)

摘　　要：通过小试研究了长江水源水厂低温、低浊期排泥水直接回用对混凝效果和沉后水水质的影响。结果表明,排泥水回用可明显降低混凝后絮体表面的ζ电位的绝对值、改善混凝效果。澄清池排泥水和滤池反冲洗水回用比分别为2%～4%和6%～10%时,可分别节约混凝剂16%～28%和5%～10%;澄清池排泥水回用比不宜超过3%,此时沉后水DOC含量和细菌总数分别上升不超过7%和15%、总铝含量下降30%以上;滤池反冲洗水回用比不宜超过6%,此时沉后水DOC和总铝含量下降0～4%和0～40%、细菌总数上升不超过15%。The effect of direct reuse of waterworks sludge water taken raw water from Yangtze River in low temperature and low turbidity period on settled water quality was studied by jar test.The results show that the reuse of sludge water can obviously enhance the coagulation process.The reuse of clarifier sludge water can reduce 16%～28% of coagulant dosage if the reflux ratio between 2%～4%,and the reuse of filter backwash water can reduce 5%～10% of coagulant dosage if the reflux ratio between 6%～10%.When the reflux ratio below 3%,the reuse of clarifier sludge water will enhance the DOC and the total bacteria less than 7% and 15%,and reduce the total aluminum concentration more than 30% in settled water.When the reflux ratio below 6%,the reuse of filter backwash water will reduce the DOC and the total aluminum concentration between 0～4% and 0～40%,and enhance the total bacteria less than 15% in settled water.

关 键 词：长江水源 低温低浊 排泥水 回用 安全性 

分 类 号：X703.1[环境科学与工程—环境工程]