低温耐冷菌在寒冷地区生活污水处理中的应用李亚选

344Vo.l34,№.420074Applied　Science　and　TechnologyApr.2007:1009-671X(2007)04-0063-041,2,1,3,4(1.广东省建筑设计研究院市政分院,广东广州510010;2.洛阳工业高等专科学校建筑工程系,河南洛阳471003;3.中国核动力研究设计院,四川成都610041;4.哈尔滨工业大学市政环境学院,黑龙江哈尔滨150090;)　:COD、,,.:COD,10%,CODCOD63.67%;.:;;;:X703.1　　　:AStudyonthepsychrotrophilicbacteriafortreatmentofcryogenicdomesticsewageLIYa-xuan1,YUNYing-wei2,JIAORui-hu1,ZHANGXiao-ling3,JIANGAn-xi4(1.TheArchitecturalDesignResearchInstituteofGuangdongProvince,Guangzhou510010,China;2.TheCivilEngineeringDe-partment,LuoyangCollegeofTechnology,Luoyang471003,China;3.NuclearPowerInstituteofChina,Chengdu610041,China;4.SchoolofMunicipalandEnvironmentalEngineering,HarbinInstituteofTechnology,Harbin150090,China)Abstract:BasedoncurrentsituationoftreatmentofdomesticsewageincoldareaandchangesofdegradativeandsedimentarypropertiesofCODatdifferenttemperatures,thepsychrotrophilicbacteriawasprovedtoexistinactivesludgefromtheangleofmicrobiology.Thepsychtrophilicbacteriapossessesparticulardominanceundercryogenicenvironment,whichisalsoverifiedbyexperimen.tTheexperimentalresultsindicatethattheremovalrateofCODforpsychrotrophilicbacteriais10percentlowerthanthatofmesophilicbactericatnormaltemperature,butatlowtemperature,theCODremovalrateoftheformeris63.67percenthigherthanthatofthelatter.Therefore,thepsy-chrotrophilicbacteriahasgreatandbrightpotentialinwastewatertreatmentincoldarea.Keywords:cryogenics;psychrotrophilicbacteria;domesticsewage;watertreatment:2006-12-25.:(E01-22);(2003AA4CS122);.:(1977-),,,:,E-mail:[e-mail].　　、、,3～6;-30℃.、、[1-2].、、、,[3].,,、.1　、1.1　1)::pH=7.67～8.09,COD=248.3～692.2mg/L2):(10°C);30d.3)::4～8℃28～32℃.1.2　1.2.1　,,、,1mL200mL(SEA),4℃3～4d,1mL200mLSEA2,,54℃.1.2.2　,,30℃10～12h,1mL200mLSEA2,64℃.1.3　[4],:752;COD,2h;1.4　1-2-3-4-5-6-7-8-9-10-11-12-13-1　1,,24.123,COD,3,1012.33.2　2.1　2.1.2　,2、3:t/min2　1t/d3　202、3,,3min,,SV30.20d:,;.,,64　　　　　　　　　　　　　　　　　　　　　　　　　　34,,.,,,,SV30,3min;,,,,,,.4.(a)(b)　4　2.1.2　COD,5、6.5　1COD5,COD80.53%,COD48.26%.:COD.,,,,,COD;,,,6　20COD10℃,,,.6,,2COD,COD.,,,,,,.2.2　2.2.1　,(1.2),78.t/h7　7,,,;8,,,.654,:,.“”—“”,[5].t/h8　2.2.2　COD,2COD,910.9　COD10　COD9、10:,COD71.87%,COD8.20%;,COD87.26%,COD77.71%.:COD9.55%,63.67%,.,COD.3　　1),10°C,.2)CODCOD,COD63.67%;COD9.55%.3)COD5.84%,,.:[1],,,.[J].,2001,17(6):50-52.[2].[M].,.:,1982.[3],,,.[J].,2000,33(6):70-73.[4].[M].:,2002.[5]AKILAG,CHANDRATS.Anovelcold-tolerantclostridi-umstrainPXYL1isolatedfromapsychrophiliccattlema-nuredigesterthatsecretesthermolabilexylanaseandcellu-lose[J].FEMSMicrobiologyLetters,2003,219:63-67.[:]66　　　　　　　　　　　　　　　　　　　　　　　　　　34