pH值和纯氧曝气对氨氮去除的影响研究

pH523112、pH、、pHpH7．2、7．4、7．6、7．8、8．0、8．2、8．4、8．6。pH。pH8．01．23、1．72、3．05mg/L。NaOHpHpHpHNaOHpH8．00．031/m3、。pHTU991C1000－4602201609－0058－04EffectofpHandPureOxygenAerationonAmmoniaNitrogenＲemovalCHENLi-zhuCHAOMengDINGWeiLIUQing-huaCHENZhuo-huaDongjiangShuiwuCo．Ltd．Dongguan523112ChinaAbstractToaddresstheproblemsofseasonalandsuddenpollutionofammonianitrogeninthesoutherndrinkingwatersourcetheeffectofpHvalueonremovalofammonianitrogenwasinvestigatedandthecostaccountingwasperformedbasedonthetraditionalwatertreatmentprocessandactivatedan-thracitefilterwithpureoxygenaeration．Theammonianitrogenconcentrationsandremovalrateswerein-vestigatedwithoutadjustingpHandwithadjustingpHto7．27．47．67．88．08．28．4and8．6forsandfilteractivatedanthracitefilterandactivatedanthracitefilterwithpureoxygenaerationrespec-tively．Theresultsshowedthattheremovalefficiencyofammonianitrogencouldbeimprovedafteradjus-tingpH．WhenpHwas8．0theremovalratesofammonianitrogenbythethreegroupsofprocesseswere1．23mg/L1．72mg/Land3．05mg/Lrespectively．Thebestremovalefficiencywasachievedbythegroupofactivatedanthracitefilterwithpureoxygenaeration．ThepHofthewatertobefilteredde-creasedandthepHofthefilteredwaterdecreasedfurtherwhenpHwasadjustedwithadditionofNaOH．ThecostofNaOHforadjustingpHto8．0wasabout0．031yuan/m3．Itwasapplicabletowatertreatmentplantstorespondtoseasonalandsuddenpollutionofammonianitrogen．KeywordsammonianitrogenpHvaluepureoxygenaerationactivatedanthracitefilter2009ZX07423－003。·85·32920165CHINAWATEＲ＆WASTEWATEＲVol．32No．9May2016。1。。pH23。pH。11.15m3/hA、BCABC。1。1Fig．1Flowchartofexperiment0．8m×0．8m×3．5m8m/h0．625m248h。A1．0mm1．2m2mm30mmBC0．8～2．0mm800mg/g1m2～4mm100mm。CDO。DO13．0～15．0mg/L。1．8mg/LAl2O350min。1.2。。50g/L300L。4h。NaOHpH400LNaOH4kg10g/LNaOHpH。NaOHNaOH4hpH。22～27℃。1.3NH3－NCAＲY50NO－2－NDOYSI－55。22.1pHpH2。pH6．8～7．0、。2A0．62mg/LB1．12mg/LC2．05mg/L。。、4、。C51·95·．watergasheat．compH329mg/LDO4．57mg/L。DO5．02mg/LDO2mg/L。DOCDO15mg/LDO1mg/LDO。pH2．5mg/L《》GB5749—2006。2pHFig．2ＲemovaleffectofNH3－NwithoutpHadjust2.2pHNaOHpHpH6pH7．0～8．5pH7．28．6。BCpHAC1、2。1ATab．1TestresultsofaddingalkaliinAgroupNaOH/mg·L－17．07．37．47．57．78．28．69．2pH8．08．28．48．58．68．78．99．2pH7．27．47．67．88．08．28．48．6pH6．56．86．96．87．16．96．97．12CTab．2TestresultsofaddingalkaliinCgroupNaOH/mg·L－17．07．37．47．57．78．28．69．0pH8．08．18．38．28．48．58．79．0pH7．27．47．67．88．08．28．48．6pH6．26．76．56．76．77．46．76．91、2NaOHpH。pH。pHH+pHH+pH。pH。。pH。。7。pH。pHpH。pHpH。2.3pHpH7．2、7．4、7．6、7．8、8．0、8．2、8．4、8．6。pHCBA。。。pHpH、、、、、DO、、8。pH8．0A1．23mg/L、B1．72mg/L、C3．05mg/LpHA·06·329．watergasheat．com、BC0．62、1．122．05mg/L。pH8．0。pH8．03．5mg/L《》GB5749—2006。2.4CpHC3．0～3．5mg/LC。pH7．20．017mg/LpH7．40．005mg/L。2.5pHpHpH8．0。1、2NaOH7．7mg/L。。40000．031/m3、。3①pHA、B、C0．62、1．12、2．05mg/L。②NaOHpHpHH+pH。③pH7．28．6pH8．01．23、1．72、3．05mg/LpH。④C3．0～3．5mg/L0．005mg/L。⑤NaOHpH0．031/m3、。1．J．201329528－36．2．pH/J．2001154346－350．3．pHJ．2003215319－322．4EmelkoMBHuckPMCoffeyBMetal．Effectsofmediabackwashandtemperatureonfull-scalebiologi-calfiltrationJ．JAWWA2006981261－73．5．J．2012281536－40．6．pHJ．2005316755－759．7．pHJ．2008424－26．8．pHJ．20082982277－2281．1984－。[e-mail]2015－10－22·16·．watergasheat．compH329