高效浅层气浮工艺除藻效能研究

430010。、80%。14、1～5。TU99C1000－4602201422－0018－05StudyonAlgaeＲemovalEfficiencyofEfficientShallowAirFlotationProcessGAOXueFULeCHENCai-gaoLIYue-zengLIShu-yuanCentralandSouthernChinaMunicipalEngineeringDesignandＲesearchInstituteCo．Ltd．Wuhan430010ChinaAbstractAlgaeremovalefficiencyofefficientshallowairflotationprocessforhigh-algaeandlow-turbiditywatertreatmentwasstudied．Efficientshallowairflotationprocesshadtheadvantagesofsmallfootprintshortresidencetimeandsoon．Theoptimalparametersofthisprocessweredeterminedinthepilot-scaletest．Thealgaeremovalrateexceeded80%andtheremainingalgaealmostbelongedtounicel-lularalgaewithsmallsize．Thisprocesshadgoodtreatmenteffectof14indicatorscomparedwithtradi-tionalprocesses．Theremovalratesofnitrogenandphosphorusbyefficientshallowairflotationprocesswas1to5timesthatbytraditionalprocesses．Keywordsshallowairflotationprocessalgaeremovalwatertreatment。12、3“”。80%4。56。。11.1①5μm10·81·3022201411CHINAWATEＲ＆WASTEWATEＲVol．30No．22Nov．20147。“”“”3～5min“”。。②1。1Fig．1Flowchartofefficientshallowairflotationprocess、、。①PAC②PAM、、③④⑤⑥⑦。1。1Tab．1TestapparatusandequipmentD=4mh=0．6mQ=60m3/hN=0．62kW/q=4．8m3/m2·hQ=15m3/hH=500kPaN=7．5kWQ=0．4m3/minP=0．7MPaN=2．2kWV=0．7m3/d1．0MPaQ=143m3/hH=400kPaN=11kWPAC、PAMPAC10%Al2O377%1．225g/cm3。300．33%。PAM1200×104u1400mPa·s34．0%UL7．56mPa·s＜0．05%。0．05%。1.235×104m3/dA、B“→→→→V→”。A2～4mg/LⅢ1．0mg/LV0．05～0．2mg/LⅢ0．05mg/LV6、7、828℃0．5～1×108/L1．9～3．2×107/L。22.1①PAC3．5mg/LAl2O365m3/h、PAC3mg/L5mg/LPAM。PAM8%·91·．watergasheat．com30220．2NTU。PAM0．1mg/LPAM。PAC0～10mg/L40%PAC70%PAC。PAC＞3mg/L2NTU。3mg/LPAC。PAC3mg/LPAM0．1mg/L。②＜0．2MPa0．20～0．45MPa。。0．35～0．4MPa。③60m3/h4．8m3/m2·h。PAC2、3mg/LPAM0．1mg/L15m3/h0．36～0．38MPa1．7510%。。④。65m3/h5．2m3/m2·h95m3/h7．6m3/m2·h。23%10%15%。＜12%12%。。2.25．12×107/L2．90×107/L。19964。75．4%20．5%4．1%。2。。。2Tab．2Analysisofalgaeremovaleffect/106·L－151．229．0/106·L－15．15．0/%90832.30．62kW7．5kW2．2kW8．1～10．3kW。9．0kW·h/h。65m3/h0．138kW·h/m30．838/kW·h0．116/m3。2.4、、。“－－”0．5mg/LPAC3．5mg/L。、、、·02·3022．watergasheat．comCODMn、UV254、、3。3Tab．3ComparisonofoutletwaterqualitybetweenairflotationprocessandtraditionalprocessA1/22107/%—55682/NTU5．71．490．59/%—74903/106·L－1295．02．4/%—83924/·100L－17000100/%—1001005/CFU·100mL－1242064955/%—73946/mg·L－14．532．551．95/%—44577UV254/m－10．0750．0510．035/%—32538/mg·L－11075/%—30509/mg·L－11．8471．130．693/%—396210/mg·L－10．0180．0100．005/%—447211/mg·L－11．211．022．03/%—161512/mg·L－10．870．431．26/%—511113/mg·L－10．270．140．55/%—481414/mg·L－10．080．030．02/%—6367A、BAB。14。1～23～580%～90%6～1060%～70%。11～141～5。。0．5mg/L。5min1．3h。3。3、·12·．watergasheat．com3022。①＞75%。PAC3mg/LPAM0．1mg/L0．35～0．4MPa≥15%≤6．5m3/m2·h。②＞80%。90%。③0．138kW·h/m30．838/kW·h0．116/m3。④“－－”。1～5。⑤。⑥。1．J．200622638－41．2．M．1999．3．J．200719262－65．4．J．20042479－12．5．J．2001234180－181．6．QFQJ．200117376－76．7KiuruHJ．Developmentofdissolvedairflotationtechnol-ogyfromthefirstgenerationtothenewestoneJ．WaterSciTechnol200143181－7．1988－。[e-mail]2014－05－19·22·3022．watergasheat．com