水解酸化-AMBBR-好氧组合工艺的启动过程研究(1)
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2020-03-11 20:43:45
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第3卷第7期环境工程学报V01.3,N。.7兰旦旦!笙!旦垦!!璺旦堕旦坚竺苎!竺!垦翌!i竺翌竺曼翌!璺!墨里竖尘竺至璺墨!!!:!竺竺!水解酸化-AMBBR-好氧组合工艺的启动过程研究曹艳晓龙腾锐黄祥荣(重庆大学城I仃建设与环境工程学院,重庆400045)摘要对现有污水处理厂进行工艺优化,提出新的脱氮组合工艺——水解酸化一AMBBR一好氧工艺,并研究该工艺的启动过程。采用单池驯化培养的方式,同时启动了水解酸化池、缺氧移动床牛物膜反应器(AMBBR)和好氧池,重点就水解酸化池和AMBBR的启动进行详细介绍。结果表明,水解酸化反t『’{f器采用投泥启动,小流量进水,逐渐增大流量的方式,可以在15d之内完成启动,出水清澈;AMBBR宜采用好氧启动,微氧运行的方式,挂膜时间短,膜的更新速度快;组合工艺串联后,在较短的时间内,COD的去除率可达到80%,NH,一N的去除率达到70%以|:;启动污泥和污水同流后,填料很快适应水质水晕变化,并在3—4d内重新挂膜,出水TN平均浓度低于20mg/L;运行的3周内,系统没有外排污泥。关键词水解酸化AMBBR组合工艺启动中图分类号X703.1文献标识码A文章编号1673-9108(2009)07—1203-06Researchonstart.upofcombinedhydrolysisacidification.AMBBR.aerobicprocessCaoYanxiaoLongTengruiHuangXiangrong(CollegeofUrbanConstructionandEnvironmentalEngineering,ChongqingUniversity,Chongqing400045,China)AbstractAnewcombinednitrogenremovalprocess——hydmlysisacidification.AMBBR-aerobicprocesswasproposedtooptimizethepresentedwastewatertreatmentprocess,andthestart-upofthecombinedreactorwasresearched.Domesticationbysignalreactorwasadopted。threereactorsofhydrolysis.acidificationreactor,AMB-BRandoxidationreactorwereset.upatthesametime,andtheemphasiswasonthefirsttworeactors.Resultsshowthat,thehydrolysis—acidificationreactorwasstartedwithin15daysbyaddingdigesteddrysludge,andin—creasingtheflowslowlyfromsmallamountinfluent,attheendofthe15days,theeffluentofthehydrolysis·acidi·ficationreactoriSveryclear.TheAMBBRiSbettertostarted.upbyaerobicmeansandoperatedunderanoxiccondition.Inthisway.thetimeforbiofilmcultureiSshortandtherenewalprocessiSveryfast.Afterthecom—binedprocesswasoperated.theCODandammoniaremovalefficiencyreached80%and70%inaveryshorttime.respectively.Thebiofilmrenewedin3tO4daysafterthenitrificationeffuentandtheresidualsludgewererecycled,andtheaveragetotalnitrogenintheeffluentwasbelow20mlg/L.Therewasnosludgedischargedfromthecombinedprocessduringtheoperationinthreeweeks.Keywordshydrolysis·acidification;AMBBR;combinedprocess;start·up对于生活污水的处理来说,单纯的硝化已经远远不能满足出水达标的要求。新的污水排放标准(GB18918-2002)的出台更是进一步强调了总氮的去除,也提高了总氮的出水要求。因此,为使污水达标排放,同时在反硝化时减少外碳源的投加量,作者提出了水解酸化
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