資源描述:
《試析二氧化氯消毒在污水廠中的應(yīng)用》由會員上傳分享,免費在線閱讀,更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫。
1、/中國近代第一所大學(xué)FOUNDEDlN1895.菇豢菇萼熬TIANJINUKIVERSITY藏Vi;
2、辮磐、囊爹j磐一0ij位論文翻-疆■n津寨囊簿隨蒸鷹穗搿靠一“‘”÷?!薄觥啊钡清鱦鬻ot旁疊疊謄鞠穢譬爹i肓臻j_、“≯中文摘要國家環(huán)境保護(hù)總局和國家質(zhì)量監(jiān)督檢驗檢疫總局在2002年12月24日頒布的《城鎮(zhèn)污水處理廠污染物排放標(biāo)準(zhǔn)》(GBl8918—2002)中首次將病原微生物一糞大腸菌群列為基本控制指標(biāo),要求城市污水必須進(jìn)行消毒處理。本課題是在對臭氧消毒、紫外線消毒和二氧化氯消毒,這三種消毒方
3、式進(jìn)行比較后,選擇二氧化氯消毒法作為對紀(jì)莊子污水處理廠二級出水的消毒手段。本課題從新技術(shù)的應(yīng)用及確定最佳的優(yōu)化運行模式著手考慮,以便為大型城市污水處理廠的出水消毒提供一個新的模式,同時摸清二氧化氯用于大型城市污水處理廠二級出水消毒的使用濃度、接觸時間、運行成本及對出水的影響。在課題實施過程中通過正交試驗得出消毒應(yīng)使用的濃度和有效接觸時間分別為12.8059/m3,2.920g/m3)和(297s,303s),直接成本為(0.0171元/m3,0.0178元/m3)。并通過分析發(fā)現(xiàn)使用二氧化氯消毒不
4、但能降低糞大腸桿菌數(shù)量,還能夠降低出水中BOD。、COD。,濃度,但是會造成氨氮含量的升高。關(guān)鍵詞:二氧化氯消毒正交試驗污水廠糞大腸桿菌ABSTRACTTheStateEnvironmentalProtectionAdministrationandtheGeneraIAdministrationofQualivySupervision,InspectionandQuarantineofthePeople’SRepublicofChinapromulgatedStandardforPollutant
5、EmissionofWastewaterTreatmentPlantsinTc}wnsandCities(GBl8918-2002)OnDec,24“、2002.Inthestandard,thepathogenicmicroorganismsoffecalcoliformbacteriaweredesignatedasabasiccontrolindex,requiringthatcitywastewatermustundergodisinfectiontreatment.Aftercompar
6、ingthethreedisinfectionmethodsofozone,ultravioletradiationandchlorinedioxide,chlorinedioxideiSchosenasthedisinfectionmethodforthesecondaryeffluentwaterofJizhuangziWastewaterTreatmentPlant,Thisresearchtopicproceedsfromtheapplicationofnewtechnologyandid
7、entificationoftheoptimaloperationalmodeinordertoprovideanewmodefordisinfectionofeffluentwateroflarge-sizedcitywastewatertreatmentplants.Meanwhile,theresearchalSOmakescleartheconcentration,contacttime,operationalcostofchlorinedioxideusedinlarge-sizedci
8、tywastewatertreatmentplantsaswellasitsinfluencesoneffluentwater.Throughtheorthogonalexperiment,itisfoundthattheconcentrationandeffectivecontacttimeofdisinfectionare(2.8059/m3.2.920gem3)and(297s,303s)respectivelyandthatthedirectcostis(0.0171Yua“m3.0.01
9、78Yuan/m3).ItisalsofoundthatuseofchlorinedioxideindisinfectionCannotonlyreducetheamountoffecalcoliformbacteria,butalsolowertheconcentrationofBOD5andCODcrinthewater,butitCanincreasethelevelofammonianitrogeninthewaterKEYWORDS:chlorinedioxide,dis