臭氧氧化铜绿微囊藻及其对水质的影响汪小雄

:2010-04-05:(5678104)。:(1972-),,。:。··StudyontheOzonizationofMicrosysticAeruginosaandEffectonWaterQuality汪小雄　林细池　姜成春　朱　佳(深圳职业技术学院建筑与环境工程学院　深圳　518000)　　　针对水华典型污染藻类-铜绿微囊藻(Microsystisaeruginosa),采用臭氧氧化处理,研究臭氧除藻及其对水质的影响。细胞氧化前后的光学显微摄影图片表明:氧化剂对细胞结构的完整性有明显的破坏作用,细胞最后被裂解成大小不等的碎片,同时胞内物质释放,导致溶解性有机碳(DOC)有所升高。藻细胞数量和叶绿素含量(以OD440、OD680和叶绿素a含量表示)均发生相应的降低。此外,藻液水质的pH值、浊度、UV254有一定的改善作用。　　　Abstract　Microsystisaeruginosa-thetypicalalgaeamongplanktonbloomwastreatedbyozonizationtostudythealgae-killingandwaterquality.Micrographsofoxidizedcellsrevealthatoxidationcandamagetheintegralityofthealgalcytoarchitecturetosomeextent.Thecellsbreakdowndifferentpiecesofsizefinally.Oxidationcanalsostimulatethereleasingoftheintracellularcomponentstomakedis-solvedorganiccarbonincrease.Algalcellandchlorophyllconcentration(expressedbyOD440,OD680andconcentrationofchlorophylla)decreasesdistinctlyafteroxidation.Furthermore,thepH,turbidityandUV254ofthewaterqualityhadbeenimprovedtosomeextent.Keywords　Eutrophication　MicrosystisAeruginosa　OzoneOxidation　　,〔1〕。。,,。,〔2,3〕,、、〔4-7〕。,。,,〔8〕。,-,。1　1.1　(Microcystisaerugi-nosa),。,。BG-115L。(26.5±0.5)℃,2000μEm-2S-1,12h:12h。1.2　,。1000mL,。DHX-SS-O3()。,0.35L/min,4.5mg/min,0、8、16、24、32min,1cm30mL—4—　36　6　201012DOI:10.16803/j.cnki.issn.1004-6216.2010.06.002。1.3　,;440nm、680nm(OD440、OD680)a,a《》〔9〕;pHpH;UV254OD;DOC(TOC-VCPN)。2　2.1　,。,,;,,,;,,。,,,,。,〔10〕。2.2　pHpH1。1　pH1,,4.83.2,1.6,,,,,。1,pH,pH11.049.47,pH1.57,,pH,,,。2.3　aOD440、OD680a2。2　OD440、OD680a440nm680nm(OD440OD680)。a。32min,OD4400.5910.19,67.9%;OD6800.4810.129,73.2%,。,。a302.02μg/L(1.25×106/L),2,32min,302.02μg/L126.38μg/L。2.4　DOCUV254UV254254nm,—5—　　　　　　　　　　　　,,。〔11〕。UV254。UV2543。3　DOCUV2543,UV254,32min,UV2540.3050.245,。(DOC),(DOC)。DOC30.66mg/L(0min)100.4mg/L(24min),61.64mg/L(32min)。,,DOC,,,CO2,DOC。3　,,。:(1),,,,,。(2)a,,。DOC。,,。(3),、pH,,,;pH,,,pH。(4),、,。、、,、、,、。1.　,　,,.〔J〕.,2004,24(2):355-359.2.LahtlK,RapalaJ,KivimakiAL,etal.Occurrenceofmicrocystinsinrawwatersourcesandtreateddrinkingwateroffinnishwaterworks〔J〕.WatSciTech,2001,43(12):225-228.3.BeasleyVR.Algaeintoxicationinlivestockandwaterflow〔J〕.VetClinNorthAmFoodAnimPract,1989,5(2):345-361.4.GrahamNJD,WardlawVE,PerryR,etal.Thesignificanceofalgaeastrihalomethaneprecursors〔J〕.WatSciTech,1998,37(2):83-89.5.HoehnRC,BarnesDB,ThompsonBC,etal.Algaeassourcesoftri-halomethaneprecursors〔J〕.JAmWaterWorksAssoc,1980,72(6):344-350.6.OliverBG,ShindleDB.Trihalomethanesfromthechlorinationofaquaticalgae〔J〕.EnvironSciTechnol,1983,17(2):80-83.7.,,　,.〔J〕.(),2005,35(supI):182-185.8.,.〔J〕.,2003,23(9):55-57.9.,.〔M〕.:,1991:33-37.10.NguyenML,WesterhoffPE,BakerL.Characteristicsandreactivityofalgae-produceddissolvedorganiccarbon〔J〕.JEnvironEng,2005,131(11):1574-1582.11.MaJ,andLiuW.Effectivenessandmechanismofpotassiumferrate(VI)preoxidationforalgaeremovalbycoagulation〔J〕.WaterRe-search,2002,36:871-878.—6—　36　6　201012