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时间:2020-04-17
《采用Mg(OH)_2调节pH值对富磷剩余污泥厌氧消化过程氮磷释放的影响.pdf》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、第l2卷第1期安全与环境学报V01.12No.12012年2月JournalofSafetyandEnvironmentFeb,2012woodchipbiocharadditionsongreenhousegasproductionandsorption/文章编号:1009—6094(2012}01.0o94.o4degradationoftwoherbicidesinaminnesotasoil[J].Chemosphere,2009,77(4):574—581.采用Mg(OH)2调节pH值对富磷Areviewontheresearchadvancesinbiochar剩余污泥厌氧
2、消化过程fromtheorganicsolidwastepyrolysis氮磷释放的影响LIUGuo—tao,ZHANGHong-lian,PENGXu—ya毕东苏,郭小品(1上海应用技术学院化学与环境工程学院,上海200235;(KeyLabofThreeGorgesReservoirAreaEcologicalEnvironment,MinistryofEducation,ChongqingUniversity,Chongqing400045,2上海市环境科学研究院,上海200233)China)摘要:以A/O工艺排出的富磷剩余污泥为对象,通过两组厌氧消化反应器(1组目标,1组对照
3、),对比研究了Mg(OH)2作为pH值调节剂Abstract:Thispaperintendstoprovideageneralreviewoverthead—对污泥厌氧消化过程氮磷释放的影响。结果表明,Mg(OH)在促进污vancesinbiocharfromorganicwastepyrolysisinrecentyears.Asis泥水解的同时,可以有效降低消化液中NH;一N、P043一一P质量浓度。known,themunicipalsolidwaste(MSW)isnotonlythemainsource经过21d消化,目标反应器中VSS比对照试验多削减10%,但上清液ofe
4、nvironmentalpollution,butalsotheuniqueever-growinggarbage中N一N、POd—P质量浓度仅为对照的25%、10%。消化后污泥中resourcestoday,sothattheMSWcanbetakenasabigresourcewith灰分增加,导致污泥浓缩与脱水性能显著提高。agreatexplorationprospectinprovidingcleanenergyandhelpingto关键词:环境工程学;Mg(OH)2;富磷剩余污泥;厌氧消化;pH值relievetheaggravatingenergycrisis.Itis
5、justforthisreasonthatthe中图分类号:X703.1文献标识码:AcurrentMSW—treatingtechnology,suchaslandfill,aerobiccompost—DOI:10.3969/j.issn.1009-6094.2012.O1.022ingandincineration,mayyieldtothenewactiveandpositiveMSWtreatmentforenergyreuse.Amongthem,thepyrolysishasreceived0引言closeattentiontoretrievingrenewableoil
6、,gasandbiocharintheab—厌氧消化是剩余污泥处理的重要手段。为提高污泥处理senceofoxygen,andlesssecondarypollutionatthat.Duetotherich效率,人们开发了一系列强化厌氧消化方法,如污泥热处理、nutrients(N,P,K),thecharacteristicsofporous,largesurfacearea化学处理、超声、微波、机械处理等⋯。它们可以有效打破污andhighlyaromaticstructure,biocharcanbeusedasafertilizersup—泥絮体结构,抽取挤压胞内物质,促进污
7、泥溶解,进而提高污plementintheagriculturalproduction.Moreover,addingcarbonto泥厌氧消化性能_2J。其中污泥碱性厌氧消化因简易可行而受thesoil,biocharisalsofoundhighlybeneficialforrecoveringthefer—到广泛关注。苑宏英l3J发现,pH=10.0时污泥发酵产酸速率tilityofthelandsoilandcontributesign
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