电絮凝法深度除磷的试验研究

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,,,(,650093)[],。,、、pH。:;7.82A/m2,15mm,pH,15~20min,。[];;[]X703.1[]B[]1005-829X(2011)06-0052-03ResearchontheadvanceddephosphorizationbyelectrocoagulationprocessHongPianpian,PuHongping,LiangJuan,WuJiankun(InstituteofEnvironmentalScienceandEngineering,KunmingUniversityofScienceandTechnology,Kunming650093,China)Abstract:Theeffluentfromasecondarysewagetreatmentplanthasbeenfurthertreatedbyabench-scaleelectrolyticcellwithaluminumelectrodestoremovephosphorusbymeansofelectrocoagulation.Theeffectsofcurrentdensity,electrodespacing,pHandelectrolytictimeontheadvanceddephosphorizationareanalyzed.Theresultsshowthattheeletrocoagulationprocessremovesphosphoruseffectivelyandtheoptimaltreatmentconditionsareasfollows:currentdensityis7.82A/m2,electrodespacing15mm,pHofwatersampleinneutralorweakalkalineconditionsandelectrolytictime15-20min.Thisdevicerelateswellwiththeeconomicalprincipleoftotaldephosphorization.Keywords:electrocoagulation;dephosphorization;sewagetreatment20,〔1〕。,,,,,。。,,,,,,〔2〕。。,,Al3+,Al3+Al(OH)3,Aln(OH)3n,、。,Al3+、,、,。11.1、、3,1。1,31620116IndustrialWaterTreatmentVol.31No.6Jun.,201152150mm×125mm×80mm,1L。,145mm×65mm×1mm,115mm×65mm,1∶1,。1.2。1。11.31L,,,。、、pH。30min。1.4(GB11893—1989),752NpHS-3CpH。22.1TP。10mm,pH8,(3.91、7.82、11.7、15.6、19.6A/m2),TP。2。2TP2,,TP。3.91A/m2,TP,60.94%,,15minTP。7.82A/m2,15min,67.45%,20min。15.6A/m219.6A/m2,TP,25min,75%。,Al3+,,,。2.2pHTP7.82A/m2,10mm,pH5.0、6.0、7.0、8.0、9.0,pHTP。3。3pHTP3,pHTP,pH59,,TP。pH59,38.92%74.66%。,,,。,OH-Al3+Al(OH)3,Al(OH)3,。2.3TP7.82A/m2,pH=8,(10、15、20、25、30mm),TP。4。4,TP,TP60%~70%。5~15min,,15min。,,,COD/(mg·L-1)NH3-N/(mg·L-1)TP/(mg·L-1)pH/NTU63.49.60.976.8~7.252011-06,31(6),:53,,,,。4TP2.4TP7.82A/m2,10mm,pH=8,(0~60min)TP。,TP,,TP。5min20min,46.5%57.7%,20min,,30min,56.4%。,Al3+,Al3+、Aln(OH)3n,。,,,,,TP。3(1)TP,,7.82A/m2,,TP67%。(2)10~30mm,,15mm。(3)pHTP,,。(4)15~30min,TP,,15~20min。[][1].[M].:,1989:71-73.[2],.[J].,2009,16(1):38-43.[](1985—),2011,。:13708800242,E-mail:hppbeauty@163.com。[]2011-03-10()!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!··:(1)。,,。,,。,。(2)。,。。。(3)。,、、,,,,。,。(4)。。,,。(5)。pH、、、、、、、、、、、、、、、、、、(、、)。(《》)2011-06,31(6)54

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