果蔬汁饮料废水的混凝强化试验研究魏晶晶

3310200810ENVIRONMENTALSCIENCEANDMANAGEMENTVol.33No.10Oct.2008:2008-06-12:(1982-),,,,。:1673-1212(2008)10-0114-04魏晶晶1,曹先仲1,张会军2,赵宝峰1(1.,710054;2.,100013)　:某饮料厂采用“UASB+BAF”工艺处理该厂的果蔬汁饮料废水,但UASB出水中COD、SS浓度较高,不能直接作为BAF的进水。研究表明,用931型复合混凝剂对UASB出水进行强化处理后可满足后续处理要求。在931投加量为40mg/L、PAM-投加量为1mg/L、pH=6的条件下,混凝效果最好,出水中COD和SS分别在800mg/L以下和80mg/L以下,去除率分别在40%和85%以上。现场运行数据表明,混凝强化处理后的出水水质稳定,完全可满足BAF进水的要求。混凝沉淀的总运行成本约0.25元/m3,运行成本合理,具有较高的应用价值。:果蔬汁饮料废水;混凝;931;PAC;PFS:X703.1:AStudyontheStrengthenCoagulationTestofFruitandVegetableJuiceDrinksWastewaterWeiJingjing1,CaoXianzhong1,ZhangHuijun2,ZhaoBaofeng1(1.CollegeofEnvironmentalScienceandEngineering,ChanganUniversity,Xian710054,China;2.ChinaCoalResearchInstitute,MininganddeSigningBranch,CoalMiningTechnologicalResearchInstitute,Beijing100013,China)Abstract:Abeverageplantuse“UASB+BAF”processwastewatertotreatfruitandvegetablejuicewastewater.TheCODandSSconcentrationoftheUASBeffluentishigher,andcannotdirectlyastheinfluentofBAF.Researchshowsthatafterthe931compositecoagulantsstrengthentreatment,UASBeffluentcanmeetthefollowingprocesssrequirements.Undertheconditionsthe931dosage40mg/L,PAM-dosage1mg/LandpH=6,theeffectofcoagulationisthebest,andCODandSSoftheeffluentare800mg/Land80mg/Lrespectively,andtheremovalratecanupto40%and85%respectively.Sceneperformancedatasshowthatafterthetreatmentofstrengthentreatment,theeffluentqualityisstable,andcanmeettherequirementsofBAFfully.Thetotalcostofcoagulationisabout0.25RMB/m3.Therunningcostisreasonable,andhasahighapplicationvalue.Keywords:wastewateroffruitandvegetablejuicedrinks;coagulation;931;PAC;PFS　　COD、SS、pH,“+”[1-3]。“UASB+BAF”,。,UASBCOD1000mg/L、SS100mg/L,BAF。,,UASBCOD、SS,pH,。,UASBBAF。,。1　1.1　WGZ-100、DBJ-621、PHS-3BpH、、、LG100B、、(PAC)、(PFS)931()、PAM。1.2　UASB,()COD=1365.6mg/L、SS=564mg/L、=290.4NTU、pH=4.8-5.1。·114·3310200810·Vol.33No.10Oct.20081.3　200mL300mL,(4000r/min)5min,100r/min,2min,20min,()。1.4　[4],COD;;SS;pH。2　,BAFCOD1000mg/L、SS100mg/L、pH5.5,,,COD1000mg/L、SS100mg/L。,931、PACPFS,PAM。2.1　。,;,。,PAM-,13。1　COD2　SS3　1,COD,20mg/L,COD1000mg/L。40mg/L931,COD772.7mg/L,43.4%;40mg/LPAC,COD878.3mg/L,35.7%;80mg/LPFS,COD895.7mg/L,34.4%。SS,2,PFSSS,80mg/LPFSSS185.8mg/L,67.1%;40mg/L931SS78.6mg/L,86.1%;PACSSPFS,SS100mg/L。931PAC,40mg/L931PAC,4.8NTU17.1NTU;PFS,80mg/LPFS49.0NTU(3)。,COD。SS931,PACSS112.4mg/L,、pH,;PFSSS,PFS。BAF,,,931PAC(98.3%94.1%),。,40mg/L931PAC,,80mg/LPFS。2.2　PAM-、、。PAM500,,,、,。931PAC40mg/L,PAM-·115·3310200810·Vol.33No.10Oct.200845。4　PAM-COD5　PAM-SS45,PAM-1mg/L,,,。PAM,,,“”,,。,100%,,。931,PAM-1mg/L,CODSS787.5mg/L44.8mg/L,42.3%92.1%,;PAC,PAM-1mg/L,CODSS893.7mg/L100.2mg/L,34.6%82.2%,SS,。PAM,PAM-1mg/L,。2.3　pH[5],pH,pH,pH。40mg/L931PAC,1mg/LPAM-,pH67。6　pHCOD7　pHSS67,pH6,pH,。931,pH=6.0,CODSS713.6mg/L67.5mg/L,47.7%88.0%,;PAC,pH=6.0,CODSS851.4mg/L126.5mg/L,37.7%77.8%,SS。,931CODSS,BAF;PFSSS,;PACCOD,SS,BAFSS,PFSPACUASB。3　,931,93140mg/L、PAM-1mg/L、pH=6,,CODSS800mg/L80mg/L,40%85%。,10d,8。·116·3310200810·Vol.33No.10Oct.20088　931CODSS10d,931CODSS781.2mg/L76.1mg/L,42.8%86.5%,BAF(COD1000mg/L、SS100mg/L),。4　(1),931CODSS,,PFSPACSS,SSBAF,931UASB,PFSPAC。　　(2)93140mg/L、PAM-1mg/L、pH=6,,CODSS800mg/L80mg/L,40%85%。(3),931UASB,。(4)931PAM-0.15/m3,()0.1/m3,0.25/m3,,。:[1]魏永,王书.CAST工艺在处理果汁加工废水中的应用[J].工业水处理,2005,25(9):68-70.[2]王立军,于德利.浓缩苹果汁高浓度有机废水处理工程的改造[J].中国给水排水,2006,22(24):36-37.[3]潘安济,陈景光.高浓度果汁加工废水处理工程实例[J].青岛大学学报(工程技术版),2004,19(2):6-9.[4]国家环保局.水与废水分析监测方法(第四版)[M].北京:中国环境科学出版社,2002.[5]冯利,汤鸿霄.铝盐最佳混凝形态及最佳pH范围研究[J].环境化学,1998,17(2):163-169.(上接第113页)UV254,,,UV254。,50,40;,。4　(1),。,。(2)SS,,,。(3)CODcr、NH3-N,CODcr、NH3-N。CODcr、NH3-N。(4)20%,50～80,38～62。,50,;,。(5),。:[1]俞学亨.浅谈印染行业清洁生产的现状和展望[J].印染,1997,23(7):38-40.[2]陈金坤.常州地区印染行业环保新形势及对策[J].江苏纺织,2007,12:7-12.[3]RebeccaMoore,JoanneQuarmby,TomStephenson.Theeffectsofmediasizeontheperformanceofbiologicalaeratedfil-ters[J].WatRes,2001:35(10):2514-2522.[4]张彦春.生物陶粒用于胶片生产废水回用的研究[Z].北京化工大学硕士学位论文.[5]郑俊,吴浩汀.曝气生物滤池工艺的理论与工程应用[M].化学工业出版社,2005,1.·117·