用膜生物反应器降解较高浓度氨氮的研究_丁原红

试验研究用膜生物反应器降解较高浓度氨氮的研究丁原红,洪华生,熊小京(厦门大学环境科学与工程系,福建厦门　361005)　　[摘要]采用一体式浸没膜生物反应器,在连续、曝气和100mg/L氨氮的条件下驯化活性污泥,发现驯化污泥对氨氮的硝化去除率可稳定在30%～50%,同时对有机物的降解率也都在80%以上;通过对比发现污泥的硝化和有机物降解作用之间有着相互抑制的关系。对比实验也证明,硝化过程产生的大量H+将降低体系的pH,使其稳定在5.4左右。而从3个月的运行实验看,KUBOTA的平板膜有着很好的耐污染性能,且清洗措施简单易行。　　[关键词]氨氮;膜生物反应器;降解　　[中图分类号]X703.1　[文献标识码]B　[文章编号]1005-829X(2003)04-0028-03Degradationbehaviorofhigh-strengthammoniumundercontinuedmembranebioreactorDingYuanhong,HongHuasheng,XiongXiaojing(DepartmentofEnvironmentalScienceandEngineering,XiamenUniversity,Xiamen361005,China)Abstract:ThebehaviorofCODMnandNH4+-Nremovalunderthefairlyhigh-strengthammoniumandcontinu-ousoperationconditionsareinvestigatedbyasubmergedMBR,ThemembranesuppliedfromKUBOTALit.showsbetterstabilityinfiltrationduringthelongperiodofoperation.TheremovalefficiencyofCODMnreachesover80%,butthatofNH4+-Nisnotover50%.ThisfindingsmaybelargelyresponsiblefortherelativelylowerpHvalueofthesludge,itisnecessarytokeeppHatacertainleveltoguaranteethenitrificationactivityoftheslu