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当前位置:首页 > 临时分类 > 电解水解酸化活性污泥法处理医药废水研究杨宗政
//杨宗政, 宋 健, 庞金钊(天津科技大学材料科学与化学工程学院,天津300222) : 采用电解/水解酸化/好氧活性污泥工艺处理高浓度、难降解的医药生产废水,着重考察了HRT、温度、pH、溶解氧及污泥负荷对好氧段处理效果的影响。结果表明,电解/水解酸化提高了废水的可生化性,在HRT为18h、温度为24℃、pH值为6.5~7.0、溶解氧为2.5mg/L以及污泥负荷为0.42~0.50kgCOD/(kgMLSS·d)的条件下,好氧段对COD的去除效果较好,去除率基本稳定在90%左右,出水水质满足《污水综合排放标准》(GB8978—1996)的二级标准。 : 医药废水; 电解; 水解酸化; 活性污泥法; HRT; 污泥负荷:X703 :C :1000-4602(2009)23-0064-03TreatmentofPharmaceuticalWastewaterbyElectrolysis/HydrolysisAcidification/AerobicActivatedSludgeProcessYANGZong-zheng, SONGJian, PANGJin-zhao(CollegeofMaterialScienceandChemicalEngineering,TianjinUniversityofScienceandTechnology,Tianjin300222,China) Abstract: Electrolysis/hydrolysisacidification/aerobicactivatedsludgeprocesswasusedfortreat-mentofhighstrengthandrefractorywastewaterfrompharmaceuticalindustry.TheinfluencefactorssuchasHRT,temperature,pH,DOandsludgeloadontreatmenteffectataerobicstagewereinvestigated.Theresultsshowthattheelectrolysisandhydrolysisacidificationimprovethewastewaterbiodegradability.ThegoodCODremovaleffectcanbeobtainedwhenHRTis18h,temperatureis24℃,pHis6.5to7.0,DOis2.5mg/Landsludgeloadis0.42to0.50kgCOD/(kgMLSS·d),withthestableremovalrateof90%.TheeffluentqualitymeetsthesecondlevelcriteriaspecifiedinIntegratedWastewaterDis-chargeStandard(GB8978-1996). Keywords: pharmaceuticalwastewater; electrolysis; hydrolysisacidification; activatedsludgeprocess; HRT; sludgeload :(06YFGZGX00300) COD、、,《》(GB8978—1996)[1]。//,,HRT、、pH、、。1 材料及方法1.1 1。,18L36L。·64·第25卷 第23期2009年12月 中国给水排水CHINAWATERWASTEWATER Vol.25No.23Dec.2009pH,/,、,。2~4mg/L,3~4g/L。1 Fig.1 Flowchartoftreatmentprocess1.2 ATC,NaCl、NH4Cl、HCl(、),,COD13g/L,Cl-120g/L。1.3 COD:,NH3-N:,MLSSSS:[2],pH:pH,BOD5:BOD5,:X5-212。2 结果与讨论2.1 1。1 Tab.1 ResultsofpretreatmentpHCOD/(mg·L-1)BOD5/CODNH3-N/(mg·L-1)5.9~8.1614~8980.22~0.3998~225 ATC。、Cl-,·OH,,COD,COD61.5%,Cl-80%。COD、NH3-NCl-,。MLSS20g/L,BOD5/COD0.10.3,COD,。2.2 HRTHRT,HRT,CODHRT。,CODHRT。HRT=18h,COD89.01%,COD71mg/L,。,SSNH3-N,NH3-N225mg/L,NH3-N2.05mg/L,99%,。,HRT18h。2.3 10~40℃,20~30℃[3],5~35℃,10~15℃,。,,,COD,21.5℃,COD80mg/L;15.3℃,,。,24℃,。2.4 pH,pH。18h、24℃,pHCOD。,CODpH,pH6.75(90.5%)。pH6.75,COD,;pH6.75,COD。pH,pH6.5~7.0。2.5 18h、24℃、pH6.5~7.0,COD。,COD,DO1.5mg/LCOD110mg/L,85.12%,;DO2.5mg/LCOD72mg/L,90.28%,COD。,DO2.5mg/L。(下转第68页)·65·杨宗政,等:电解/水解酸化/活性污泥法处理医药废水研究第25卷 第23期LangmuirFreundlich,1。1 Tab.1 Comparisonofadsorptionconstants/KLangmuirFreundlichbR2nkR22980.10380.96512.63929.18530.97703080.11120.95922.761710.03020.98383180.12100.95242.767810.64940.96873280.12700.94922.799611.29320.9705 : bLangmuir,;kFreun-dlich,;nFreundlich。 1,FreundlichLang-muir,。3 结论① ,pH,pH6,91.72%。② ,。3.0g/L,,91.23%,,。③ ,。150mg/L,45.40mg/g;20mg/L,,94.68%。④ LangmuirFreundlich,。:[1] ,.[M].:,1985.[2] ,,,.[J].,2004,34(2):10-14.[3] ,,.[J].,2000,27(6):449-452.:13293089683E-mail:Lindayang901@yahoo.com.cn:2009-06-02(上接第65页)2.6 ,COD,0.50kgCOD/(kgMLSS·d),COD;0.60kgCOD/(kgMLSS·d),COD;0.42~0.50kgCOD/(kgMLSS·d),COD,90%。,0.42~0.50kgCOD/(kgMLSS·d)。2.7 ,,。COD715mg/L,COD80mg/L,90%;NH3-N2.0mg/L,99%,GB8978—1996。3 结论、、,BOD5/COD0.10.3,CODNH3-N,。HRT18h、24℃、pH6.5~7.0、2.5mg/L0.42~0.50kgCOD/(kgMLSS·d),COD90%。:[1] ,,.[M].:,2005.[2] .(4)[M].:,2002.[3] BarrTA.EffectofHRT,SRTandtemperatureontheperformanceofactivatedsludgereactorstreatingbleachedkraftmilleffluent[J].WaterRes,1996,30(4):799-810.:(022)60273577E-mail:yzz3520@163.com:2009-06-20·68·第25卷 第23期 中国给水排水
本文标题:电解水解酸化活性污泥法处理医药废水研究杨宗政
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