炼油废水生化处理中二沉池改造中试工艺新探_张冬梅

炼油废水生化处理中二沉池改造中试工艺新探张冬梅1,王培风1,沈豪祥1,李宗宝1,肖锦2(1.茂名学院环境工程教研室,广东茂名　525000;2.华南理工大学环境科学与工程学院,广东广州510641)　　[摘要]针对某炼油厂废水生化处理系统不能回流脱氮,及出水水质不稳的缺陷,用膜法H-O(水解酸化-好氧)工艺改进原流程,并对二沉池加以改造,使之成为淹没式生物滤池,以H-O-R中试工艺运行。结果表明,出水水质均达到国家和DB44/56—1992排放标准。　　[关键词]二沉池改造;炼油废水;H-O-R工艺;反硝化脱氮　　[中图分类号]X703.1　[文献标识码]B　[文章编号]1005-829X(2002)08-0051-03Newpilotprocessofbio-chemicaltreatmentinrefinerywastewaterbysecondarysemidentationtankreformZHANGDong-mei1,WANGPei-feng1,SHENHao-xiang1,LIZong-bao1,XIAOJin2(1.DepartmentofEnvironmentalEngineering,MaomingCollege,Maoming525000,China;2.EnvironmentalScienceandEngineering,SouthChinaUniversityofTechnology,Guangzhou510641,China)Abstract:AnewpilotprocessofwastewatertreatmentbyusingmembranemethodH-Oscheme(hydrolysis-acidification-aerobic)hasbeencarriedout.Itsmainpointistoimprovethebiologicaltreatmentsystemfortherefinerywastewaterwhichcouldnotbedenitrificatedbytherecirculatedsludge,andthewaterqualityoftheef-fluentisunsteady.ThenewoperationalmoderunsinH-O-Rprocessbychangingthesecondarysemidenta-tiontosubmergedbiosemidentation.Theresultsshowthatthewaterqualityoftheeffluentcanmeettherequire-mentsofthenationalandlocalwaterdischangestandardssuchasDB44/56—1992.Keywords:secondarysedimentationreform;refinerysewage;H-O-Rprocess;denitrification　　某炼油厂原废水处理生化系统,采用生物接触氧化法与活性污泥法结合的O1/O2二级工艺,但由于构筑物自身的原因,不能回流脱氮,且易受冲击,出水水质不稳,达标率仅70%。对此情况,用膜法H-O(水解酸化-好氧)工艺改进原流程,又对二沉池加以改造,成为一淹没式生物滤池后,以H-O-R(水解酸化-好氧-反硝化脱氮)方式运行。结果表明,此改造方式可使出水达到国家和DB44/56—1992地方排放标准,而且二沉池还可起到反硝化脱氮的作用,弥补了原构筑物的缺陷。本实验在对各污染物监测的同时,也对二沉池