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当前位置:首页 > 商业/管理/HR > 质量控制/管理 > 二次微絮凝改善过滤效果的试验研究齐玉玲
齐玉玲, 黄晓东, 张金松, 全继萍(深圳市水务集团有限公司水技术研究所,广东深圳518030) : 为改善过滤效果,开展了沉后水的二次微絮凝过滤中试研究。结果表明,当聚合氯化铝(PAC)投量为0.2mg/L、微絮凝时间为2~4min时,可确保滤后水浊度0.1NTU的目标值。二次微絮凝过滤不仅解决了初滤水浊度偏高的问题,而且提高了对有机物和藻类的去除率,同时滤后水的铝含量没有升高,过滤水头损失也没有明显的增加。 : 二次微絮凝; 过滤; 聚合氯化铝:TU991.2 :C :1000-4602(2005)02-0034-03ExpermientalResearchonSecondaryMicro-flocculationforImprovementofFiltrationEfficiencyQIYu-ling, HUANGXiao-dong, ZHANGJin-song, QUANJi-ping(InstituteofWaterTechnology,ShenzhenWaterGroupCo.Ltd.,Shenzhen518030,China) Abstract: Pilot-scaletestwasconductedonthesecondarymicro-flocculationofwaterfromsedi-mentationtankforimprovementoffiltrationefficiency.Theresultshowsthattheturbidityoffiltratedwaterisalwayslessthan0.1NTU(targetvalue)atpolyaluminumchloride(PAC)dosageof0.2mg/Landflocculationtimeof2-4min.Thesecondarymicro-flocculationcouldnotonlysolvethehigherturbidityofprimarilyfiltratedwater,butalsoimprovetheremovalrateoforganicpollutantsandalgae,withoutanyeffectonaluminumcontentintreatedwaterandsignificantincreaseofheadlossofthefilter. Keywords: secondarymicro-flocculation; filtration; polyaluminumchloride :(863)(2002AA601120)1 试验方法1.1 :HACH1201(1s);CODMn:;TOC:—;:;:ICT-MS;。1.2 1。,,(PAC,Al2O39.8%),PAC,DN32,,;PAC,,0.6~1.0mm,1.2m,340mm,8.7m/h。0.7m3/h。34第21卷 第2期2005年2月 中国给水排水CHINAWATERWASTEWATER Vo.l21No.2Feb.20051 Fig.1 Flowchartofexperimentalset-up2 结果与讨论2.1 PAC,,,,。1.8~4.0NTU,。[1]5min、PAC≤0.6mg/L。15min,。PAC1。1 PACTab.1 EffectofPACdosageonturbidityoffinishedwaterPAC/(mgL-1)0.050.100.200.400.60/NTU3.962.664.141.821.97/NTUPAC0.0280.0250.0200.0210.020PAC0.0380.2100.0710.1630.150 1,0.1NTU,PAC。,PAC0.2mg/L。2.2 ,、,。[1],(、)3~7min。,1~2min,。,1~5min。PAC0.2mg/L,2~4min(2)。2 Fig.2 Turbidityoffinishedwaterunderdifferentmicro-flocculationtime,Zeta[2],。2.66NTU。PAC3。3 PACFig.3 EffectofPACadditiononturbidityofinitiativefiltrationwater3,PAC,0.1NTU,,。PAC0.10NTU,40min0.10NTU,。,1.5NTU,PAC()0.1NTU。2.3 PAC0.20mg/L、3min,35第2期 齐玉玲,等:二次微絮凝改善过滤效果的试验研究 第21卷4。PAC,20h。24~48h,PAC。4 PACFig.4 EffectofPACadditiononheadlossPAC0.20mg/L、3min,PACCODMn、TOC2。2 PACTab.2 EffectofdosingPAConorganicsandalgaeremovalCODMn/(mgL-1)TOC/(mgL-1)/%PAC1.491.9393.78PAC1.652.0287.89 2,6%~8%,TimothyAWolfe[3]。,PAC(0.03mg/L),0.2mg/L。3 经济分析PAC1200/t,0.2mg/L0.002/m3。35×104m3/d,700/d。,24h,40min,,0.97×104m3/d,2.5mg/L,300/d0.0009/m3,0.0011。。4 结论① PAC0.2mg/L,2min,0.1NTU,。② ,,。③ PAC。④ PAC0.002/m3,,0.0011/m3。:[1] ,,.—[J].,2002,18(4):14-18.[2] .[J].,1999,(5):3-5.[3] TimothyAW,NicholasGP.Optimizingfilterperform-ance[J].JournalNEWWA,1999,(3):6-21.:(0755)82247922E-mail:qiyuling@waterchina.com:2004-09-02山西省万家寨引黄北线工程 该工程管线全长:160km,其中PCCP管长116km,管径:DN2600~DN3000,隧洞长:44km。源水取自万家寨水库,设计输水量为20m3/s,输水总量为5.6×108m3/a,总投资额为53.6亿元。设计单位:天津市水利水电勘测设计研究院、山西水利水电勘测设计研究院。目前该工程正在审查可行性研究报告。( )36第2期 中国给水排水 第21卷
本文标题:二次微絮凝改善过滤效果的试验研究齐玉玲
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