固定化光合细菌净化养鱼水质试验

64199912JOURNALOFFISHERYSCIENCESOFCHINAVol.6No.4Dec.1999*郑耀通胡开辉(福建农业大学环境科学系,福州350002)净化模拟养殖水质试验表明,固定化光合细菌可显著提高NH+4-N和COD的去除率,并能增加溶解氧经1个月的鱼种饲养试验,固定化光合细菌(组)和游离光合细菌(组)鱼体重显著大于对照(!组),成活率也高于!组组效果最佳,不仅鱼体质好,活泼,个体较大且整齐,而且体色鲜艳从水质分析结果看,组明显优于其它各组光合细菌,固定化,水质净化,池塘养鱼80(photosyntheticbacteria),,,,,,,;,[1,2];,∀,,,,:1998-12-30*#∃,K96024∀.,199411.11,0.5%1.0%1.5%2.0%3.0%NH4Cl,,(Rhodobactersphaeroides);2(Rhodobactersp.)[3],4000~5000r/min660nm(1cm),,0.51mg(VSS)/ml1.25ml(0.05g)95ml50%,PVASiO2CaCO3,,,1.5%~2%CaCl2(1ml)10%10~16h,2KH2PO415min,1.3COD,,DO[4]1.4200kg,,50kg,,0.1%,1650L(1~6),48h3,!,,9:00~10:00,DOCOD1.575L,80,100g(,80%),(!),()(),2~3,2%~3%,23~26%22.1212h,19984101112141725,6,1,,15d,COD,,1,,,,15d98.9%,68.1%3,83.3%,33.7%,,44.6%,COD70.6%18.3%,41.2%,63.4%,,1CODDO()Table1Variationofammonia-N,CODandDOinthesimulatedpond(mean)mg/Litemgroup/&testdateinitialApr&10Apr&11Apr&12Apr&14Apr&17Apr&25ammonia-N!control2.352.061.691.611.330.940.75group2.241.461.020.780.470.380.25/%*removingrate29.1*39.651.564.659.566.7group2.100.920.530.350.140.0560.023/%removingrate55.368.678.389.594.090.8COD!control77.874.567.468.762.154.151.6group74.470.154.848.744.539.841.2/%removingrate6.218.329.128.326.420.1group69.850.431.830.427.829.520.5/%removingrate32.352.855.755.245.560.3DO!control3.784.134.083.984.214.154.47group3.694.354.534.764.874.905.21/%increasingrate5.3011.019.615.718.116.5group3.804.474.865.155.385.766.21/%increasingrate8.2319.229.427.838.838.9*:=(-)/,removingrate=(controlmeanvalue-meanvalueoftestgroup)/controlmeanvalue,thesamebelow.2.21,(2),,,,(1,2),5662Table2Theresultsoffishrearinggroupbeforebreeding/number/cmlength/gweight1onemonthafterbreeding/number/cmlength/gweight/%survivalrate!control801.7∋0.250.09∋0.02692.01∋0.50.35∋0.286.3group801.7∋0.250.09∋0.02772.24∋0.30.84∋0.296.3group801.7∋0.250.09∋0.02792.75∋0.41.22∋0.398.71Fig1Thevariationofammonia-Nduringfishrearing2Fig2ThevariationofDOduringfishrearing3[5],,,,,,,,,,,,,,,,,,,,,,,1,.PVA.,1994,15(3):372..,1995,8(3):1303,,,..,1998,27(3):3424.().:,19975,,..:,1991.240~292574:PurificationofwaterqualitybyimmobilizedphotosyntheticbacteriaforfishculturingZhengYaotongHuKaihui(DepartmentofEnvironmentScience,FujianAgricultureUniversity,Fuzhou350020)AbstractAnexperimentwasconductedfor1monthinsomesimulatedfish-culturingwatersusingimmobilized(group)andordinaryphotosyntheticbacteria(group).Theresultsshowedthattheimmobilizedphotosyntheticbacteriacanremoveammonia-NandCODmosteffectivelyandincreaseDOinthewaterremarkably.Thebodyweightandsurvivalrateoffishingroupandgroupweremuchhigherthanthoseincontrolgroupafter1month(sbreeding.Andtheresultsofgroupweremuchbetterthanthoseofgroupthatthefishingroupweremorehealthy,activeandregular-shapedwithbiggerbodyandbrighterbodycolor.Furthermore,onthebasisofwaterqualityanalysis,thewaterconditionofgroupwasthebestofthe3groups.Keywordsphotosyntheticbacteria,immobilization,waterpurification,pondfishculture586