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X,,,,(,300221):,2000036000mg/L,COD16004000mg/L,,COD90%,:;;;;:X703:A:1002-1264(2003)06-0010-03TreatmentofHigh-saltOilfieldProducedWaterbyCompositeMicrobialCultureWEINa,WANGXiang2he,LIFeng2kai,ZHANGYing2jun,GUOYi(TianjinIndustyInstituteofMicrobology,Tianjin300221,China)Abstract:Bio-degradationoforganicsinoilfieldproducedwaterwithlighsaltcontentbyusingcompositemicro2bialcultureisinvestigated.Theresultsshowthatthehighsaltcontenthasnosignificantinhibitoryactiontothecom2positemicrobialculturewhenCl-concentrationfrom20000to36000mg/LandCODCrfrom1600to4000mg/L.Bycombiningthismethodwithphysi-chemicalmethod,theeffluentCODcouldmeattherequirementofthesecodary-classdischargestandardwith90%CODremoval.Keywords:highsaltcoutent;oilfieldproducedwater;highefficiencycompositemicrobialculture;biodegra2dation;dischargewithstandards,,,,,,,,,11.1:;pH:;:;:;:;(BOD5):5;(COD):(1)mg/L/(A)1000mg/LCOD/(A)50mg/LGB11914-89;(2)mg/L/(A)1000mg/LCOD/(A)50mg/L[1]1.212#,::,;pH78();(COD):4.01103mg/L;135.5mg/L;:3.6104mg/L;:23000mg/;(BOD5):2.04103mg/L12#CODBODBOD/COD50%,,,01166200312URBANENVIRONMENT&URBANECOLOGYVol16,No.6Dec.2003X:(0231807112):2003-07-032,12#pH7.58.20.3%,pH6.0,,,COD3800mg/L2360mg/L3,,[2],3.112#,,,,2%10%,12121FY-1FY-2NaCl7%,FY-3NaCl10%,FY-4NaCl2%FY-1FY-2FY-32F1F2F3F4F5NaCl10%2%5%5%2%,F6F7NaCl2%F1F2F3F4F53.2COD,,COD:2360mg/LpH:7.2:++++F1F5,12h,30FY1FY3,30,12h11CODCOD(mg/L)pH(%)F17107.0+++69.9F24107.0+++82.6F34507.0+++80.9F46266.8+++73.4F54926.5+++79.2FY111237.0++52.4FY28017.0++66.1FY39617.0++59.2,CODF2F3COD,COD410mg/L450mg/L,COD82.6%80.9%COD,3.3CODCOD(82.6%)83.3.1F1F5,COD:2360mg/LpH:7.2:++++F1F5,12h,3022F1F5CODCOD(mg/L)pH(%)F1+F23987.0++83.1F2+F32627.0+++88.9F3+F43157.0+++86.6F4+F53507.0+++85.2F1+F2+F33147.0+++86.7F2+F3+F42417.0+++89.8F2+F3+F52476.8++89.5F2+F3+F4+F52266.8++90.43.3.2FY1FY311,,COD:2360mg/L;pH:7.2;:++++FYIFY3,12h,30FY1FY3COD33FY1FY3CODCOD(mg/L)pH(%)FY1+FY211297.5++52.2FY1+FY311267.5+52.3FY2+FY310967.5+53.6FY1+FY2+FY39917.5+58,FY1FY2FY3,CODFY1+FY2+FY3COD58%,3.3.3FY1+FY2+FY3,F2F3F4F5,FY1+FY2+FY3COD1009mg/L,pH:7.5,:+,COD57.2%44COD(mg/L)pHCOD(mg/L)pH(%)F2+F3+F410097.5+124.27.0+87.7F2+F4+F510097.5+116.47.0+88.4F2+F3+F4+F510097.5+1007.0+90.1,COD(52.2%58%),,FY1+FY2+FY3F2+F3+F4+F5,12hCOD150mg/L,44.112#,COD37.9%,4.28,FY-1FY-2NaCl7%,FY-3NaCl10%,F1NaCl10%;F2F3F4F5NaCl2%7%4.3,COD52.4%66.1%,69.9%82.6%4.4FY-1FY-2FY-3F1F2F3F4F5,COD58%,COD90.1%4.5,COD97.37%,COD3800mg/L100mg/L,[1],.COD[J].,2002,12(1):38.[2],.COD[J].,2002,28(6):4447.:(1970-),,,,,4211662003