UFRO处理煤层气田产出水的工程应用刘研萍

23520079WATERRESOURCESPROTECTIONVol.23No.5Sep.2007　　:“”(2002BA806B04):(1964—),,,,、。E-mail:[e-mail],,(,　430081):针对微污染水处理中藻细胞的去除,研究聚合氯化铝形态分布对混凝除藻效率的影响。结果表明,混凝剂水解产物中,中等聚合物含量影响混凝过程中藻细胞去除率。中等聚合物含量越大,藻细胞去除率越高;在一定条件下,藻细胞去除率与中等聚合物含量线性相关,混凝出水中残铝含量与单体和低聚物含量线性相关。对聚合氯化铝,中等聚合物含量与碱化度线性相关。适量加聚磷酸根、硅酸根可以提高混凝除藻效率,并能显著降低混凝出水中残铝含量,所阐述的混凝除藻机理可以较好地解释实验现象。:微污染水;水处理;混凝剂;藻细胞;除藻机理:TU991.2　　　:A　　　:1004-6933(2007)05-0050-05ThealgaeremovalmechanismbypolymerizedaluminiumsaltcoagulantsandmethodstoimprovealgaeremovalLEIGuo-yuan,ZHANGXiao-qingWANGDan-si(SchoolofResource&EnvironmentalEngineering,WuhanUniversityofScienceandTechnology,Wuhan,430081)Abstract:Theeffectofspeciesdistributionsofpoly-aluminumchloride(PAC)onalgaeremovalefficiencieswasstudiedaimingatremovingalgaecellinthetreatmentofmicro-pollutedrawwater.Theresultsshowthatthepercentageofmiddlingpolymersinhydrolysateofcoagulantsinfluencsthealgaeremovalefficiency,themorethepercentageofmiddlingpolymerswas,themoretheefficiencywas.Thealgaeremovalefficiencyrelateswithpercentageofmiddlingpolymerslinearly,andresidualaluminumconcentrationintheeffluentofcoagulationrelateswiththepercentageofmonomericspeciesandlowpolymersofcoagulantslinearlyundergivencondition.ThepercentageofmiddlingpolymersrelateswithbasicitylinearlyforPAC.Thepolymerizationofphosphateandactivatedsilicicacidwithsuitableamountmayimprovealgaeremovalanddecreaseresidualaluminumconcentrationintheeffluentofcoagulationnotably.Aboveresultsprovidenewaspectforpreparationofefficientcoagulantsaimingatalgaeremoval.Keywords:rawwaterofmicro-pollution,watertreatment,coagulant,algaecell,speciesdistribution　　,,,[1-2]。,。“-”,,,。、、,。,,、。,。,,,、,。1　1.1　(PAC):1mol/LAlCl3·6H2O,12.5mL500mL,·50·,(300r/min)1mol/L,0.5mL/min,,B(B=[OH-]/[Al3+]);,120min,0.25L,0.05mol/L;24h,(4℃)。:,,(nP/Al)()(0.1mol/L),0.5mL/min,(PPAC)。(nSi/Al),(PSAC)。0.05mol/L。1.2　Al-Ferron[3],Ferron,3:Ma、,1minFerronMa;Mb,120minFerronMb;Mc,120minFerronMc。Ma、Mb,Mb;Mc,Mc,。3Aa、Ab、Ac。1.3　。BG11。,(24h),。a220～280μg/L,pH8.6。,。,、、、、,,a50～280μg/L,。1.4　JJ-4,1L,,(300r/min,1min),(60r/min,10min),20min,a,。,mmol/L。1.5　a[4];IS0.7027-1984;,5s,JS94G+()Zeta,10。[5]。2　PAC2　2.1　2.1.1　碱化度对PAC形态分布的影响PAC1,,Ma,Mb,Mc。2.0,。Aa、AbBAa=-0.3255B+0.8477　　R2=0.9866Ab=0.3092B+0.0616　　R2=0.99051　PAC2.1.2　阴离子加聚对PAC形态分布的影响1.6,PAC2,nP/Al,Ma、Mb,Mc,。,;,,,Ma、Mb,Mc。·51·,,PAC。,0,nSi/Al(PSAC),nSi/AlPSAC3。nSi/Al,PSACMa、Mb、Mc,。3　PAC2.2　2.2.1　碱化度对PAC混凝除藻效率的影响pH8.45,a280.36μg/L;141.57μg/L。PAC0.156mmol/L,4。(Rc)B、Mb(Ab):Rc(%)=9.492B+55.576,R2=0.8883;Rc(%)=30.13Ab+53.893,R2=0.9404:Rc(%)=15.595B+31.893,R2=0.8883;Rc(%)=53.16Ab+26.821,R2=0.80194　PAC,,Ab,。,、,,Rc～B。,,。2.2.2　阴离子加聚对PAC混凝除藻性能的影响PAC,1.6,nP/Al0、5%、10%、15%、20%、25%PPAC。pH8.45,a280.36μg/L。nP/Al5。,,nP/Al15%。5　PACPAC,0,nSi/Al0、20%、30%、40%、50%、60%PSAC,pH8.40,a194.56μg/L。nSi/Al6,nSi/Al,nSi/Al50%。6　PAC7　PAC2.3　pH8.26,a162.93μg/L,PAC,7。,。,。,、·52·8、9,、。8　9　1PAC,,Ma(Aa),Aa。0.250mmol/L,Aa,ρ(Al)=0.1627Aa+0.3644　　R2=0.7607　　,PAC,PACMa(Aa)。Ma,Aa,nP/Al、nSi/Al,Aa。10　Zeta2.4　pH8.45,a280.36μg/L,0.125mmol/L,ZetanP/Al10。nP/Al,,,Zeta。10Zeta,,Al(OH)3。,,。、、、4,,;;。,,。,nP/Al,,;nP/Al,,。,,,。,,,nSi/Al0.5,。Ma。(),[3],,,,。Ma,,,。[6-7]。,、,Ma,。,Aa,,;,Ma,,。3　　a.,,,。b.、,,。c.,·53·,、、,。致谢:此研究得到哈尔滨工业大学马军教授的支持与指导,特此致谢!:[1]POURISS.Afatalmicrocystininintoxicationinhaemodialysisnnitincaruaru[J].BrazilLancet,1998,352(2):21-26.[2]CHENGWEN-po,YURuey-fang,CHIChen-hsun.Influenceofeutrophicationonthecoagulationefficiencyinreservoirwater[J].Chemospher,2003,53(7):773-778.[3],.[J].,1988,8(2):146-155.[4],.[M].:,2002:324-326.[5].S—[J].,2000,10(4):431-432.[6],,,.[J].,2005,25(2):183-187.[7],.-[J].,2005,31(7):69-72.(:2007-02-04　:)(上接第40页)　　,,,、C0,,235t/a。6　　,,COD、NH3-N86.2%98.2%;CODNH3-N1786t/a、479t/a。,,。:[1].[K].:,1988:435-436.[2],.[R].2005:30-35.[3],,.[M].:,1996:104-108.[4].[R].:,2002:150-151.(:2006-03-21　:　)(上接第46页):[1].2005[R].:,2006:27.[2],,,.[J].,1985(4):55.[3].[K].:,2000:82-83.[4],,.[J].,1988,8(2):39.[5],.[J].,1995(4):15.[6].[M].:,2003:52-53.[7],.[M].:,1999:57-58.(:2006-11-30　:)(上接第49页):[1],,.[J].,2000(6):6-13.[2],.[J].:,2001,22(2):203-205.[3],,.[J].,2002,22():24-28.[4],.[J].,2006,25(5):71-80.[5],.[J].,2005,6(1):1-7.[6],,,.[J].,2006,22(11):36-44.[7]BLANCHARDM,TEILMJ,OLLIVOND,etal.Originanddistributionofpolyaromatichydrocarbonsandpoly-chlorobiphenylsinurbaneffluentstowastewatertreatmentplantsoftheParisarea(France)[J].WaterResearch,2001,35(15):3679-3687.[8],,,.//(GC/MS/MS)[J].,2003,19(3):5-8.[9],,,.[J].,2006,25(3):29.[10],,,.A[J].:,2005,43(6):874-876.(:2006-09-13　:)·54·