二循水质酸性原因分析及对策钱连新(沧州炼油厂,061000) : 。,,。: AnalyzingtheCauseofErxun'sAcidWaterandResolvingWayQianLianxin(CangzhouRefinery,061000)Abstract ItmakesthetheoreticalanalysistothecausethatErxun'scirculatingwatergetsacid.Aftereliminatingthepossibilitythatthesystemletsoutacid,itisthechiefcausethatthealkalinesub-stancesleak,suchasammonia,sulfideandsoon.Andsomecorrespondingcountermeasuresareputforward. Keywords:Circulatingwater,Acid,Analysis,Corresponding1 、、、、、。,。2800m3,6300m3/h。、,,,,。2002115,,。1。,,pH,,,,。,,,pH,6.0。,pH。,,,。。,。:2002-11-08:,,。。:0317-3552567·62· ENVIRONMENTALPROTECTIONINPETROCHEMICALINDUSTRY 2003262 1 pH/mg·L-1/mg·L-1/mg·L-1·mL-12002.1.108.95213.51891.05×1052002.1.138.89193.11920.95×1052002.1.166.140.55.65402.13×1052002.1.175.5456.15512.33×1052 ,,。pH,:,。,。,,。2.1 ,NO-2、NO-3,NO-3。,,,,:2NH3+3O22HNO2+2H2O+619.7kJ(1),、HOCl,:2HNO2+O22HNO3+20kJ(2)NO-2+HOClNO-3+HCl(3),NO-2,NO-2。,、HOClHClHNO3,NH3,pH;,,HClHNO3,NH3,pH。pH,,NaOHpH。2.2 NH3Cl2,Cl2,:Cl2+H2OHOCl+HCl(4)NH3+HOClNH2Cl+H2O(5)NH3+2HOClNHCl2+H2O(6)NH3+3HOClNHCl3+H2O(7)Cl2+H2O+NO-2NO-3+2HCl(8)HO-Cl,HOCl,,,(4)~(8),,HO-Cl。,HOCl。HOClOCl-+H+(9)pH7.5,50%HOCl,pH,HOCl,HOClOCl-20。,,。,,,、、COD、,,,pH,,。,NO-2、NO-3、COD、pH,·63· 2 .。3 ,1,、pH、COD。,,;,,。,,,。3.1 ,,,。,,,。3.2 ,,,,,。3.3 ,,,。,,,。。3.4 ,Shur-GO,。3.5 ,、,。4 ,,,,、,,,。,,,,。1 .2000.122 ...,2002.13 ...,2000.12(上接第57页)5 “/”,“”,。,,,。,,,。·64· 200326