城市污水厂TNTP达一级A标准的设计运行要点熊鸿斌

檲檲檲檲檲檲檲檲檲檲檲檲檲檲檲檲檲檲檲檲檲檲殘殘殘殘TN、TPA2300095×104m3/d《》GB18918—2002A。TN、TP。、TN、TPTN、TP。TNTPX703．1C1000－4602201118－0096－04KeyPointsinDesignandOperationofWWTPforTNandTPMeetingFirstLevelACriteriaXIONGHong-binWUSheng-fangZHAONa-naSchoolofResourcesandEnvironmentalEngineeringHefeiUniversityofTechnologyHefei230009ChinaAbstractAWWTPinHefeiadoptsmicro-aerationoxidationditchandchemicalphosphorusre-movalmicro-flocculationfiltrationprocess．Itscapacityis5×104m3/d．ItsdesigneffluentmeetsthefirstlevelAcriteriaspecifiedinDischargeStandardofPollutantsforMunicipalWastewaterTreatmentPlantGB18918－2002．HoweversinceitsoperationTNandTPoftheeffluenthaveexceededthestand-ard．Byanalyzingtheprocessflowtheinfluentandeffluentqualityandoperationparameterstherea-sonsforTNandTPexceedingthestandardarediscussedandproblemsneedingattentionforTNandTPmeetingthestandardareanalyzedtoprovidereferenceforoperationanddesignofsimilardomesticWWTPs．Keywordsmicro-aerationoxidationditchchemicalphosphorusremovalTNTP11.1、312、、、31．1km2。Q=5×104m3/d=0．579m3/s。、1。1、Tab．1Designinfluentandeffluentqualitymg·L－1CODBOD5SSTNNH3－NTP320～380150～180166～20033～4025～304～5≤50≤10≤10≤15≤5≤0．510COD、BOD5TN、·69·271820119CHINAWATER＆WASTEWATERVol．27No．18Sep．2011TP。1.2、、。、。。1。1Fig．1Flowchartofswagetreatmentplant1.3①。216．2m×3m×4m2．8m3．75min。②。12．0m9．48～9．49m6．1m2083m32h。③。20m9．48～9．49m6．05m3444m33．3h。④。70．7m7m429．05m6m10967m310．5hMLSS4000mg/L15d。⑤。、240m4．5m3．9h50%～100%。⑥。5%2．3mg/L0．3mg/L2．0min2．5min。22.1201066、2。26Tab．2InfluentandeffluentqualityinJunemg·L－1CODBOD5SSNH3－NTNTP1647512640．349．693．4623736．437．42．092COD、BOD5。6TN、NH3－NNH3－N84%。24．7%39．6%6BOD5/COD=0．457＞0．45BOD5/TP=21．6≥20。6TP2mg/LTN20mg/LTP、TNA。2.2201077COD、BOD5。71—12COD、BOD512COD、BOD5。7TP＞0．5mg/L。TN15mg/LTP、TNA。·79·．watergasheat．comTN、TPA27183TN、TP3.1。TP①DO0．5mg/L。DO0．2mg/LDO2mg/L1。。②7h3h。。1．0mg/L2。③100%。。3100%70%TP15%。NO－3－NPHB。④。15d33d。。。433d40%17d50%5d87%。⑤4000mg/L6500mg/L。5MLSS6500mg/L33d10967m32．1602t。99．2%270．025t/d。200～250t/d。。⑥。5%PAFC5%2．3mg/L0．3mg/L86%。。TP1mg/L。2．5min。6。3.2TN。TN①6BOD5TN7549．69mg/LBOD5/TN=75/49．69=1．5。7BOD5/TN4～6。TNBOD5。TN。②DO≤0．5mg/LDO0．2mg/L6TNCOD、BOD5HRT3．5h7h。TN。4①4500～5000mg/L25d。②////。－167mV－422mVDO＜0．2mg/L。③。。10NH3－N22．2mg/L0．52mg/L412。NO－3－NNO－3－N。·89·2718．watergasheat．com5927、28。10TN、TP2、3。2TNFig．2ChangeinTN3TPFig．3ChangeinTP66.1①DO≥0．2mg/L。。②。③。。④。6.2①。②NO－3－N。③TNCOD、BOD5。1．M．2008．2．J．2006965－67．3．J．2009564－66．4．J．200912157－15[e-mail]2011－02－27·99·．watergasheat．comTN、TPA2718