水源水生物处理工艺启动中氨氮的去除_梅翔

收稿日期:2000—10—12作者简介:梅翔(1967-),男,江苏扬中人,博士,讲师,主要研究方向为水污染控制。水源水生物处理工艺启动中氨氮的去除梅　翔1,陈洪斌2,张全兴1,高廷耀2(1.南京大学环境学院污染控制与资源化研究国家重点实验室,江苏南京210093;2.同济大学环境科学与工程学院,上海200092)　　摘　要:通过沉淀槽与生化槽串联的试验系统,分析了微污染水源水生物接触氧化处理工艺启动过程氨氮和亚硝酸盐氮的变化规律。研究结果表明,在无曝气条件下和曝气条件下,填料上硝酸盐细菌的生长均依赖于亚硝酸盐细菌转化氨氮为亚硝酸盐氮的过程。启动中氨氮去除效果趋于稳定的过程是两类硝化细菌在生长速率和转化能力上趋于稳定的过程。提供生化槽充足的曝气量是保证填料上硝化细菌稳定生长,顺利完成启动过程的必要条件。关键词:水源水;生物接触氧化;启动;硝化细菌;氨氮;亚硝酸盐氮中图分类号:X52　　　文献标识码:A　　　文章编号:1001-2141(2001)01-0050-03Ammonia-NitrogenRemovalduringStartupofBiologicalProcessforTreatmentofSourceWaterMeiXiang1,ChenHongbin2,ZhongQuanxing1,GaoTingyao2(1.StateKeyLaboratoryofPollutionControlandResourceReuse,SchooloftheEnvironment,NanjingUniversity,Nanjing210093;2.SchoolofEnvironmentalScienceandEngineering,TongjiUniversity,Shanghai200092)Abstract:Thevariationsofammonia-nitrogenandnitrite-nitrogenduringstartupofthebiologicalcontactoxidationprocessfortreatingslightlypollutedsourcewaterhavebeenanalyzedbyusingtheexperimentalsystemwiththesedimentationtankandthebiochemicaltankinseries.TheresearchresultsshowedthatthegrowthofNitrobacteralwaysdependedontheconversionofammonia-nitrogentonitrite-nitrogenbyNitrosomonasunderbothnoaerationandaeration.Thestartupduringwhichammonia-nitrogenremovalapproachedthesteadystatewassuchastage,duringwhichthegrowthratesandconversioncapacitiesoftwogroupsofnitrifyingbacteriaapproachedthesteadystate,respectively.Sufficientairsupplyforthebiochemicaltankwasnecessaryforthesteadygrowthofnitrifyingbacteriaonthepackingmaterialsandthesmoothcompletionofpro