pH值对新型SBBR处理畜禽废水脱氮的影响_朱春兰

2009年10月第三届全国农业环境科学学术研讨会论文集821pH值对新型SBBR处理畜禽废水脱氮的影响22朱春兰，肖鸿，邓仕槐，段焱，孙亚琴，胡晓梅，侯麟（四川农业大学环境工程系，雅安625014）摘要：以畜禽废水为处理对象，考察pH值对新型SBBR处理畜禽废水脱氮的影响。结果表明：在原水pH值为7和8的条件下，系统脱氮效果较好，总氮的去除率达到85%以上，pH值为6和9的时候总氮去除率下降至50%～60%；系统对pH值有着明显的调节作用；新型SBBR内存在同步硝化反硝化及短程硝化反硝化作用。关键词：畜禽废水；新型SBBR；pH值；脱氮EffectofpHonNitrogenRemovalofPoultry-wastewaterwiththeNew-styleSBBRZHUChun-lan,XIAOHong,DENGShi-huai,DUANYan,SUNYa-qin,HUXiao-mei,HOULin(DepartmentofEnvironmentalEngineering,SichuanAgricultureUniversity,Ya′an625014)Abstract:Anew-typeSBBRwasusedtotreatthepoultry-wastewater,investigatedontheremovalefficiencynofnitrogenindifferentpHconditions.Whenitwasattheroomtemperature，theCODCrofinfluentwasabout2000mg·L-1，andtheTNwasabout140mg·L-1，keepeddissolvedoxygenas2.0~2.5mg·L-1，TheresultsshowedthatthetreatmenteffectofanalternativeaerobicandanaerobicmodewasgoodtoSNDandshortcutnitrificationanddenitrification；WestudiedfourpHconditions,pHhadanobviouseffectondisposeofTN：whenthepHofpoultry-wastewaterwas7or8,theresultsturnedouttobebette