水解_AMBBR_好氧工艺和传统_省略__O工艺处理低碳源污水的对比研究_曹艳晓

第4卷第12期环境工程学报Vol.4,No.122010年12月ChineseJournalofEnvironmentalEngineeringDec.2010水解/AMBBR/好氧工艺和传统A/O工艺处理低碳源污水的对比研究曹艳晓1,2龙腾锐2黄祥荣3龚正2傅婵媛2(1.中南财经政法大学信息与安全工程学院,武汉430073;2.重庆大学城市建设与环境工程学院,重庆400045;3.中国市政工程中南设计研究院,武汉430010)摘要为提高低碳氮比污水中易生物降解有机物的含量,实验设计了水解(H)/移动床生物膜反应器(AMBBR)/好氧(O)工艺,并与传统A/O工艺对比,考察其作为低碳源污水脱氮工艺的可行性。通过小试对比低温下(10.9～13℃)两工艺中污泥的反硝化性能,并进行了实验室规模的中试运行。小试结果显示,AMBBR两相污泥对硝酸盐的去除率比单纯反硝化污泥高出19.4%。中试结果表明,相同的运行条件下,两工艺对COD和NH3-N的去除效率相当,但H/AMBBR/O工艺对总氮的去除效率均优于传统A/O工艺;在各自最优工况下,前者平均总氮去除率较后者高出22.39%,且前者通过剩余污泥的回流水解实现了部分污泥减量化,尤其是对于温暖地区,该工艺能够有效改善低碳源污水脱氮性能。关键词低碳氮比生活污水脱氮H/AMBBR/O中图分类号X703.1文献标识码A文章编号1673-9108(2010)12-2776-05Comparativestudyoflowcarbonsourcewastewatertreatmentbyhydrolysisacidification/anoxicmovingbiologicalbiofilmreactor/aerobicprocessandconventionalanoxic/aerobicprocessCaoYanxiao1,2LongTengrui2HuangXiangrong3GongZheng2FuChanyuan2(1.SchoolofInformationandSafetyEngineering,ZhongnanUniversityofEconomicsandLaw,Wuhan430073.China;2.CollegeofUrbanConstructionandEnvironmentalEngineering,ChongqingUniversity,Chongqing400045,China;3.CentralandSothernChinaMunicipalEngineeringDesign＆ResearchInstitute,Wuhan430010,China)AbstractThehydrolysisacidification(H)/anoxicmovingbiologicalbiofilmreactor(AMBBR)/aerobic(O)processwasemployedtoimprovethecontentofeasilybiodegradableorganismsinlowcarbonsourcewastewater,anditwascomparedwiththeconventionalanoxic(A)/aerobic(O)process,toseeitsfeasibilityinnitrogenremovaloflowcarbonsourcewastewater.Denitrificationperformanceofbothsludgefromthetwoproces-seswereinvestigatedatlowtemperatures(10.9～13℃),andthelaboratorypilotscaleoperationofthetwoprocesseswerealsostudied.Resultsfrombenchscaletestshowthatthenitrateremovalefficiencyoftwo-phasesludgefromAMBBRwas19.4%higherthanthatofsingleanoxicsludge.Also,resultsfrompilotscaletestshowedthatunderthesameconditions,theremovalefficienciesofCODandammoniawerealmostthesameinbothprocess,whiletotalnitrogenremovalefficiencyinH/AMBBR/OprocesswasalwayshigherthanthatofA/Oprocess,andtheD-valueattains22.39%undertheirbestcondi