废水同步脱硫脱氮工艺运行模式优选_任南琪

(1.TanjinBohaiJobTeehnolo盯College,几句In300221,China)(2.CollageofEvniromnentalSeieneeandEgnineerign,NankaiUnivesriyt,iTanjin,300071,China膜生物反应器低温运行活性污泥膨胀现象研究任南琪*,刘娇,王秀祷(哈尔滨工业大学市政环境工程学院黑龙江哈尔滨巧0090)摘要:MBR在低温条件下运行时会发生活性污泥膨胀现象,污泥沉降性指数呈现明显变化,严重时污泥几乎不能沉降。通过镜检观察,低温条件下MBR的污泥膨胀是由丝状菌大量繁殖引起的。经实验分析,低温、低溶解氧及低pH值是造成丝状菌大量繁殖的根本原因。而反应器中发生污泥膨胀后会严重缩短其运行周期。关键词:低温;膜生物反应器;活性污泥膨胀;丝状菌中图分类号:Q939文献标识码:A文章编号:eRsearehonaetivesludgebulkinginmembranebioeraetorunderlowtemPeratureRENNan一qi*,LIUJiao,认叭NGXiu一hegn(SehoolofMuineiPalandEvnironmeinalEgnineerign,HarbinInstituteofeTchoology,Habrin,150090,China)Abstraet:Membarnebioreactor(MBR)15anewkindofteehnologyinwastewatertreatmein.It15generallyknownthatactivesludgebulkingeanbevaoidedinMBR.ButaetivesludgebulkignwasPorvedtoaktePlaceinMBRunderIowtemPearture,SV3oinMBRcaneveneraehedto91%whensludgebulkingwashtemostserious.Tllroughtraditionallaboratoyrtestteehnology,itwasofundthattheProtonemaProliferationmadethesludgebulkinghaPPen,hteothermiero一ogranismsevendisaPPeared.LowtemPer