天然气净化厂的废水处理设计与运行

李国欣1,2,杨俊仕1,李旭东1(1.中国科学院成都生物研究所,四川成都610041;2.中国科学院研究生院,北京100039):天然气净化厂废水水质水量波动大且含有大量难降解物质,难以稳定达标采用水解酸化)好氧工艺处理天然气净化厂废水,出水可以稳定达到5污水综合排放标准6(GB8978)1996)的一级标准,可回用于循环冷却绿化冲厕道路冲洗等介绍了生物处理工艺的主要设计参数控制参数以及运行经验,为实现天然气净化厂废水处理的节能减排提供参考:天然气净化厂;废水处理;设计;运行:X703.1:C:1000-4602(2009)22-0049-04DesignandOperationofWastewaterTreatmentProcessinNaturalGasPurificationPlantLIGuo-xin1,2,YANGJun-shi1,LIXu-dong1(1.ChengduInstituteofBiology,ChineseAcademyofSciences,Chengdu610041,China;2.GraduateUniversity,ChineseAcademyofSciences,Beijing100039,China)Abstract:Duetothegreatfluctuationinwaterqualityandquantityandthehighcontentofrefrac-toryorganicsinwastewaterfromnaturalgaspurificationplan,ttheeffluentcanhardlymeetthedischargestandard.Aftertreatedbyhydrolysisacidificationandaerobicprocess,theeffluentcanreachthefirstcr-iteriaspecifiedinIntegratedWastewaterDischargeStandard(GB8978-1996)andbereusedforrecircu-latingcooling,greening,toile-tflushing,roadcleaningandsoon.Thedesignandcontrolparametersandoperationexperienceofbiologicaltreatmentprocessareintroducedtoprovideareferenceforenergysavingandemissionreductionofwastewatertreatmentinnaturalgaspurificationplan.tKeywords:naturalgaspurificationplan;twastewatertreatmen;tdesign;operation:(KSCX2-YW-G-008);(07SG111-007),H2S,,,,,,1废水水质水量111,,,(MDEA)H2SCO2;(TEG),#49#第25卷第22期2009年11月中国给水排水CHINAWATER&WASTEWATERVo.l25No.22Nov.2009;;;,,[1]1127,,11Tab.1CharacteristicsofdifferentwastewaterspHCOD/(mg#L-1)BOD5/(mg#L-1)/(mg#L-1)S2-/(mg#L-1)NH3-N/(mg#L-1)6~9[2000[600[10/[30MDEATEG;,6~9[25000[7500[35010~100[30MDEATEG;1,6~9[400[200//[30NP,,:¹,;,,,,;,,50%~70%,;,,,,H2S,,30%~50%ºMDEATEG,;,2废水处理工艺比较:,;,,2,,,,2Tab.2Comparisonamongwastewatertreatmentprocessesinnaturalgaspurificationplantyyyyyy;yyyyy,,[2]yy,,;yy;,[1]yyy;,;[2]yyy,3废水处理工艺设计31133Tab.3DesignwastewaterqualityanddischargestandardpHSS/(mg#L-1)COD/(mg#L-1)/(mg#L-1)NH3-N/(mg#L-1)/(mg#L-1)6~9[200[800[5.0[50.0*[10.06~9[70[100[1.0[15.0[5.06~9[70[100[1.0[15.0[5.0:*#50#第25卷第22期中国给水排水[3],OSBR,11Fig.1Flowchartofwastewatertreatmentprocess31344Tab.4Majordesignparameters/h,125B1,\15eSS0.5/12DO[0.3mg/L6DO[0.5mg/L24MLSS2.0g/L,DO3.5~7.0mg/L100%~150%/4设计及运行要点5,,55Tab.5Practicaloperationofproject1[13]2345////////SBR////////SBR//////HRT/h2435.244.271.451.3/(m3#d-1)600500720120240COD/(mg#L-1)4008008001700800COD/(mg#L-1)385943/1036/COD/(mg#L-1)56.337.4/65.7//%/100100151005,56(GB8978)1996)2,,100%,34,15%5,;,,100%:¹,,(下转第55页)#51#李国欣,等:天然气净化厂的废水处理设计与运行第25卷第22期3设计经验¹,,,,,,,,,º,,,,[5s,9#»CASS,,,¼CASS/CMF,,,,,½PLC,CASS4h,:30miny60miny30miny120min,,,4结论,:[1],,.[J].,2007,23(21):56-58.[2],,.[J].,2008,7(2):902-905.[3],,,.-[J].,2001,28(3):416-432.[4],.[J].,2004,20(1):36-39.:[phone]E-mail:[e-mail]:2009-05-14(上接第51页)º;,»,,;,¼,;5结语¹,,,º(UASB),»(MDEATEG),,,COD¼,,:[1],,,.[J].,2005,34(5):429-431.[2],.[J].,1993,11(3):55-60.[3],.-[J].,2001,21(3):45-46.:[phone]E-mail:[e-mail]:2009-05-20#55#赵国志,等:广州国际生物岛再生水处理工程设计第25卷第22期