厌氧同时反硝化产甲烷工艺的应用及进展_韩晓宇

厌氧同时反硝化产甲烷工艺的应用及进展韩晓宇1,彭永臻1,2,张树军2,王淑莹2,刘春慧1(1.哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090;2.北京工业大学北京市水质科学和水环境恢复工程重点实验室,北京100022)摘要:厌氧同时反硝化产甲烷工艺能够充分利用废水中的有机碳源,在实现生物脱氮的同时产生甲烷,其关键是如何减小或消除硝态氮(NO-x-N)对产甲烷菌的抑制作用。目前,解决该问题的主要手段有培养同时反硝化产甲烷颗粒污泥和生物膜等方法。研究表明,厌氧同时反硝化产甲烷反应器串联好氧硝化反应器(SDMR—ANR)系统,适于处理早期的垃圾渗滤液、屠宰废水等含高浓度有机物和高NH+4-N的废水,其中进水COD/NO-3-N和好氧反应器出水回流比是影响其运行效果的关键因素。此外,还介绍了厌氧同时反硝化产甲烷工艺的微生物种群结构及进一步的功能扩展。关键词:生物脱氮;反硝化反应;产甲烷反应;颗粒污泥中图分类号:X703.1文献标识码:B文章编号:1000-4602(2008)06-0015-05基金项目:国家“十一五”科技支撑计划重点资助项目(2006BAC19B03);高等学校博士学科点专项基金资助项目(20060005002);北京市教委科研基地—科技创新平台ApplicationandProgressofAnaerobicSimultaneousDenitrificationandMethanogenesisProcessHANXiao-yu1,PENGYong-zhen1,2,ZHANGShu-jun2,WANGShu-ying2,LIUChun-hui1(1.SchoolofMunicipalandEnvironmentalEngineering,HarbinInstituteofTechnology,Harbin150090,China;2.KeyLaboratoryofBeijingforWaterQualityScienceandWaterEnvironmentalRecoveryEngineering,BeijingUniversityofTechnology,Beijing100022,China)Abstract:Theanaerobicsimultaneousdenitrificationandmethanogenesisprocesscaneffectivelyutilizetheorganiccarbonsourceinwastewatertorealizebiologicalnitrogenremovalandmethanogenesissimultaneously.HowtoreduceoreliminatetheinhibitionofNO-x-Nonthemethanogeniscrucial.Cul-tivatingthegranularsludgeorbiofilmforsimultaneousdenitrificationandmethanogenesisarethemainmethodstosolvetheproblematpresent.Theresultsshowthatsystemofanaerobicsimultaneousdenitrifi-cationandmethanogenesisreactorinserieswithaerobicnitrifyingreactorisverysuitabletotreatthewastewaterwiththehighconcentrationsoforganicmatterandammonianitrogen,suchasleachatefromtheimmaturelandfillandslaughterhousewastewater.TheCOD/NO-3-Noftheinfluentandtheeffluentrecycleratiooftheaerobicreactorarethekeyparameterswhichaffecttheperformanceofthesystem.Inaddition,thestructureofthemicrobialcommunityintheanaerobicsimultaneousdenitrificationandmeth-·15·第24卷第6期2008年3月中国给水排水CHINAWATER＆WASTEWATERVol.24No.6Mar.2008anogenesisreactorandtheenlargedfunctionofthesimultaneousdenitrificationandmethanogenesisprocesswereintroduced.Keywords