交替好氧／缺氧短程硝化反硝化生物脱氮+Ⅰ．方法实现与控制

第24卷第5期2004年9月环境科ACTASCIENTIAE学学报CIRCUMSTANTIAEVo1．24．No．5Sep．，2004文章编号：02532468(2004)05．0761．08中图分类号：X703文献标识码：A交替好氧／缺氧短程硝化反硝化生物脱氮I．方法实现与控制高大文，彭永臻，王淑莹(1．哈尔滨工业大学市政环境工程学院，哈尔滨15oo9o；2北京工业大学环境与能源工程学院，北京100022)摘要：采用实时控制策略和曝气／搅拌交替运行方式在(26±1)℃下开发了一种新型短程硝化反硝化生物脱氮工艺：实时控制交替好氧／缺氧短程硝化反硝化脱氮工艺．并对其与实时控制传统SBR法短程硝化反硝化脱氮和预先设定时间控制交替好氧／缺氧短程硝化反硝化脱氮工艺进行了比较研究．结果显示，实时控制交替好氧／缺氧短程硝化反硝化脱氮工艺无论从硝化速率、反硝化速率还是从硝化时间、反硝化时间上均优于实时控制传统SBR法短程硝化反硝化脱氮和预先设定时间控制交替好氧／缺氧短程硝化反硝化脱氮两种工艺．其硝化速率和反硝化速率分别是预先设定时间控制交替好氧／缺氧短程硝化反硝化工艺的1．38倍和1．25倍，是实时控制传统SBR法短程硝化反硝化脱氮工艺的1．82倍和1．61倍．因此，实时控制交替好氧／缺氧短程硝化反硝化脱氮工艺不但能够合理分配曝气和搅拌时间，而且还能提高硝化、反硝化速率，缩短反应时间，从而达到降低运行成本的目的．关键词：生物脱氮；交替好氧／缺氧；SBR；短程硝化反硝化；实时控制Alternatingoxic-anoxicshortcutnitrification-denitrificationI．realiza-tionandcontrolGAODawen。，PENGYongzhen，WANGShuying(1．Sch。olofMunidpal&EnvimnmentalEnsineering，HarbinInstitute。fTechnology，Harbin150090；2．SchoolofEnvironmentalandEnergyEngineering，BeijlngUniversityofTechnology，Beijing100022)Abstract：Anovelbiologicalnitrogenremovaltechnologyviashortcutnitrification-denitrificationwasdevelopedusingbothrea1．timecontrolstrategiesandalternatingaeration／nfixingoperationmodeat26±1oC．whichisalternatingoxic／anoxicshortcutnitrification-denitrificationun．derrealtimecontrolAcomparativestudyonitandshortcutnitrification—denitrificationundertraditionalSBRprocesswithreal-timecontrolandalternatingoxic／anoxicshortcutnitrification—denitrificationunderfixedtimecontrolmodeWasmadeinsequencingbatchreactor(SBR)．Theresultsshowedthatalternatingoxic／anoxicshortcutnitrification．denitrificationunderrea1．timecontrolisthebestoneincomparisonwithotherprocesses．Itsnitrificationanddenitrificationrateswere1．38timesand1．25timesofalternatingoxic／anoxicshortcutnitrification—denitrificationunderfixedtimecontrol，andwere1．82timesand1．61timesofshortcutnitrification—denitrificationundertraditionalSBRprocessrespectively．Sothistechnologycannotmrlycontrolaerationandnfxingtimeaccurately，butalsoimprovebothnitrificationanddenitrificationratesandde．creasestotalreactiontime，andsavestheoper