采用曝气生物滤池作预处理对絮凝剂投加量的影响陈丽

　5　62006　12　()JournalofGuangzhouUniversity(NaturalScienceEdition)Vo.l5　No.6Dec.　2006　　:2006-07-05;　:2006-10-08　　:“”　　:　(1982-),,,.:1671-4229(2006)06-0069-04采用曝气生物滤池作预处理对絮凝剂投加量的影响陈　丽1,魏晓安2,陆少鸣3,方　平3(1.,　510006;2.,,　510405;3.,　510640)　:以聚合氯化铝PAC为絮凝剂,抽取珠江原水,分别直接投加和经过曝气生物滤池处理后再投加絮凝剂,对比两种情况下的絮凝剂投加量.结果表明,在沉淀池出水浊度基本相同的情况下,经过曝气生物滤池处理后絮凝剂投加量大为减少.曝气生物滤池在作为深度净水工艺的预处理时对减少絮凝剂投加量有一定作用.:曝气生物滤池;聚合氯化铝PAC;投加量;浊度:X703　　　:A1　概　述,、、20%～30%,,(50%～60%).,,,[1].,,[2].、,PAC,、,.1.1　,,.,.,,,,,、,,,[3].,.,,()[4].Zeta,,.,Zeta,,[1].1.2　PAC,[Aln(OH)mC13n-m],,,,,[Al(OH)3H2O]∝,,[5].PAC、、　　()5　、、、.PAC,pH,,.、、,.2　中试实验概况2.1　.,,PAC,、.,(BAF),PAC、、、(1).1　Fig.1　Thesketchofthepilot-scaletreatment2.2　2～5mm,≥150m2m-3,1.05～1.2tm-3.1　Table1　ThedesignparameterofBAF　　　　　　/(m3h-1)10～15/m2.30(1.6～2.4)∶1/min16～24/m1.50/m5.25/m0.25/m5.00,/(Lm-2s-1)1510　　:.1700mm×1700mm×4300mm,870mm;.:PAC(5‰).2.3　:HACH2100N;(NH3-N):;(CODMn):.3　实验结果与分析3.1　20059302005109,2.2　Table2　Thewaterqualityparameteroforiginalwateratthefirststage/NTU40.700～72.20051.710NH3-N/(mgL-1)1.178～2.0091.817/℃31.000～34.00033.000pH7.000～7.2007.100CODMn/(mgL-1)7.020～14.4809.770NO-2-N/(mgL-1)0.106～0.6770.301　　12.2m3h-1,、、3.　　,,,1.0NTU.3,,21mLmin-1、22mLmin-1、23mLmin-1、24mLmin-1,1.0NTU.,,.,0.25NTU,,,,.3.22005923,(1.6～2.4)∶170　6　:　　　3　Table3　Theturbidityofdifferentprocessphaseatthefirststage/(mLmin-1)　/NTU/NTU/%2145.200～61.40050.8000.683～1.4801.12097.80%0.171～0.3340.25599.50%2245.900～69.20053.4000.886～1.3301.15097.85%0.182～0.2980.25199.53%2343.700～62.40052.4000.803～1.0900.92298.24%0.187～0.3160.26999.49%2440.700～72.20049.9000.558～0.8120.67998.64%0.176～0.2970.25999.48%,,,,,,、,,,11d.6d.20051010,,20051020.4.4　Table4　Thewaterqualityparameteroforiginalwateratthesecondstage/NTU45.800～62.40052.690NH3-N/(mgL-1)1.002～2.6171.991/℃31.000～34.00033.000pH7.000～7.2007.100CODMn/(mgL-1)7.670～14.8709.790NO-2-N/(mgL-1)0.251～0.6690.465　　,、、、5.　　5,,5　Table5　Theturbidityofdifferentprocessphaseatthesecondstage/(mLmin-1)　/NTU/NTU/%1739.900～60.70048.90010.100～1.48014.30070.76%1.020～1.4701.26097.42%0.197～0.3160.27199.45%1845.900～69.20053.4009.330～20.90015.10071.24%0.890～1.3101.18097.75%0.165～0.3320.23799.55%1943.700～62.40052.40012.700～17.40015.70072.65%0.779～1.1000.97898.30%0.174～0.3280.22099.62%2040.700～72.20049.9009.500～16.40014.10072.51%0.365～0.9100.70198.63%0.165～0.3240.20599.60%,.,,,.,71.79%.,NH3-NCODMn,76.83%41.02%.,,17mLmin-1、18mLmin-1、19mLmin-1、20mLmin-1,1.0NTU.,,.0.25NTU,,,,.,,,21mLmin-1、22mLmin-1、23mLmin-1、24mLmin-1,,17mLmin-1、18mLmin-1、19mLmin-1、20mLmin-1,.,,71　　()5　4mL,.4　结　论51NTU,5‰PAC,,21mLmin-1、22mLmin-1、23mLmin-1、24mLmin-1,1.0NTU.,17mLmin-1、18mLmin-1、19mLmin-1、20mLmin-1,1.0NTU.,,,PAC4mL.、NH3-N.:[1]　,.BAF++UF[J].,2004,24(1):12-16.ZHUJian-wen,WUHao-ting.ProspectsoftheapplicationofBAF+normalprocess+UFtechnologytothetreatmentofmi-cro-pollutedsourcewater[J].IndustrialWaterTreatment,2004,24(1):12-16.[2]　　.[M].:,2003.LIUHu.iThebiologicaloxidationtechnologyofwholeflowtothetreatmentofmicro-pollutedsourcewater[M].Beijing:ChemicalIndusryPress,2003.[3]　,,.(BAF)[J].,2005,24(1):57-62.ZHUZheng-qi,JIANGPei-hua,CHENJi-hua.Researchprogressofbiologicalaeratedfilter[J].WaterPurificationTechnol-ogy,2005,24(1):57-62.[4]　,.BAF[J].,2003,19(2):21-23.SANGJun-qiang,WANGZhan-sheng.Theapplicationofbiologicalaeratedfiltertothetreatmentofmicro-pollutedsourcewater[J].ChinaWaterandWasteWater,2003,19(2):21-23.[5]　.[J].,2003,22(1):101-102.LIHui-ping.Experimentalresearchonpolyahuminiumchlorideandaluminiumsulphateascoagulantapplyinginwastewatertreatment[J].YunnanCircumstance,2003,22(Supplementl):101-102.TheinfluenceofbiologyaeratedfilteringpoolforpretreatmentontheflocculatingagentCHENLi1,WEIXiao-an2,LUShao-ming3,FANGPing3(1.SchoolofCivilEngineering,GuangzhouUniversity,Guangzhou510006,China;2.GuangzhouCityPolytechnic,Architecture,Guangzhou510405,China;3.Dep.tofEnvironmentScienceEng.,SouthChinaUniversityofTechnology,Guangzhou510640,China)Abstract:Therearetwosituationsofputtingpolyaluminiumchloride(PAC)astheflocculatingagentintothewaterwhichcomesfromZhujiangRiverandputtingPACintothewaterwhichhasbeendecontaminatedbythebiologyaeratedfilteringpoo.lTheirdosagesoftheflocculatingagentarecompared.ResearchshowsthatwhentheeffluentofthesettlinghasthesimilarturbiditytherearefewerdosageoftheflocculatingagentwhenputtingPACintothewaterwhichhasbeendecontaminatedbythebiologyaeratedfilteringpoo.lItprovesthatthebiolo-gyaeratedfilteringpoolforpretreatmentofdeepwater-supplytreatmentcanreducethedosageoftheflocculatingagen.tKeywords:biologyaeratedfilteringpool;polyaluminiumchloridePAC;dosage;turbidity【:】72