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1、第28卷第9期环境科学学报Vo.l28,No.92008年9月ActaScientiaeCircumstantiaeSep.,2008郝晓地,戴吉,胡沅胜,等.2008.控制BNR工艺厌氧释磷效果因素的实验研究[J].环境科学学报,28(9):1771-1776HaoXD,DaiJ,HuYS,etal.2008.ExperimentalstudyonfactorscontrollinganaerobicP-release[J].ActaScientiaeCircumstantiae,28(9):1771-1776控制B
2、NR工艺厌氧释磷效果因素的实验研究*郝晓地,戴吉,胡沅胜,张向平北京建筑工程学院可持续环境生物技术研发中心,北京100044收稿日期:2007-09-11录用日期:2008-06-17摘要:以实验室动态生物营养物去除(BNR)工艺)))BCFS(BiologischChemischeFosfaatStikstofVerwijdering)运行实验为基础,采用静态实验方法,研究了初始COD、碳源种类和厌氧释磷反应时间对厌氧释磷效果的影响.实验结果表明,初始COD越高,释磷速率和总释磷量越高.当碳源充足且反应时间足够长时,
3、释磷速率不受初始COD和碳源种类影响,单位质量污泥(VSS)的VFAs利用率只要维持在0.04g#h-1(3h内)即可获得满意的释磷效果.以葡萄糖为碳源时,经过3h厌氧反应的释磷量低于乙酸与丙酸2种碳源;与丙酸相比,在相同初始COD下乙酸最终诱发的释磷量虽然不及丙酸,但在3h内诱发相同的释磷量乙酸所需要的反应时间仅为丙酸的1/2.关键词:厌氧释磷;碳源;COD;反应时间;释磷速率;聚磷菌(PAOs/DPB)文章编号:0253-2468(2008)09-1771-06中图分类号:X171文献标识码:AExperiment
4、alstudyonfactorscontrollinganaerobicP-release*HAOXiaodi,DAIJ,iHUYuansheng,ZHANGXiangpingTheR&DCentreforSustainableEnvironmentalBiotechnology,BeijingUnivofCivilEngineeringandArchitecture,Beijing100044Received11September2007;accepted17June2008Abstract:AnaerobicP-r
5、eleasedirectlycontrolsthetotaleffectofbio-Premovalinbiologicalnutrientremoval(BNR)processes.Basedonalab-scaleBNRprocess(BCFS),batchexperimentswereappliedtostudytheeffectsofinitialCODconcentrations,carbonsourcesandHRTonanaerobicP-release.Theresultsfrombatchexperi
6、mentsindicatethatP-releaseincreasedwithincreasinginfluentCOD.TheaverageratesofP-releasewerenotaffectedbyinitialCODconcentrationsiftheanaerobicHRTwassufficient.TheP-releaseeffectwasgoodaslongastherateofuptakeofvolatilefattyacids(VFAs)perunitofsludge(VSS)wasabove0
7、.04g#h-1.Withglucoseusedascarbonsource,anaerobicP-releasewithin3hwaslessthanwithacetateandpropionate.ThefinalamountofPreleasedinthepresenceofacetatewaslowerthanthatreleasedwithpropionate,butthereactiontime(HRT)requiredtoreachthesameamountofP-releasewithin3hwitha
8、cetatewashalfofthatrequiredwithpropionate.Keywords:AnaerobicP-release;carbonsource;COD;HRT;rateofP-release;PAOs/DPBsSmoldersetal.,1994).在好氧条件下,以O2作为电1引言(Introduction)
