2X()4年11月中国水产学会第五届青年学术年会摘要集NFT草滤器净化循环流水水产养殖沉淀器污液的研究淬进明’,张颖萍2l(.浙江大学农业生物环境工程研究所,浙江杭州310029;2.中国计量学院信息工程学院,浙江杭州310015)摘要:为建立低成本的零排放水产养殖废水处理系统,利用斜板沉淀器、PVC滤网、生物滤器和NFT草植物滤器组成的系统,处理150尾淡水白鳍(C口lossom。西用`柳omumX平均体重为86.1划.669,养殖密度为.487k创由3)的养殖废水。从2003年8月1日至10月31日,每天将343L斜板沉淀器底部的污液输送到N下T草滤器(长、宽x深=3.om、1.2m、.03m)中循环灌溉.255m协T培高羊茅(eFsucataurnid力aceascherb.)。草的过滤使污液水质发生显著变化,93.8%的硝氮N几一,98.9%的亚硝氮N仇一,75.6%的总氨氮TAN,90.9%的总氮IN,90.4%的PT,%.7%的悬浮物55和74.9%的化学需氧量COD被吸收,PH由.692升高到8石1,每4d有67.5L处理后的水回流用于Pvc滤网的反冲洗.试验期间鱼每天增重.4559,饲料系数为1.610。草每18d留茬6cmXIJ割1次,每次平均收获.0240坷mZ鲜草.结果表明植物滤器能有效解决循环流水水产养殖系统中N、P、coD、固体物的累积和PH的降低问题.关健词:水产养殖废水处理;循环流水水产养殖系统:营养液膜技术:高羊茅介eatmentofsludgeformaseltterinreeireulaitngaquaeultuerbyNF-TgarssiflterNPAi-nJmign,,zNAHGYing一pignza.加atUetoj讨『1’CutIUalrB-OIven~ment云’glnee,ign,乃咖gnnUivesr你aH”岁hou刃00.2PhCian2.山才佃孵ofi)n价脚a“o月egn概erign,hC1’aniLJl’agnnUivesr奴aH娜hou310018,hCina)A城,d:ThisPaperawsotdveeloPalow一ostezr-odisch魂eaqacuulotarlawstewateretratmentsysetmco]口binde幼htaPlaetsettle几aPVCiflet几abioiflterandaNF-Tgrassiflet.rhTissysetmwasemPloyedto加鱿wastewaterPrdeuced勿150一iatlColossomabare柳omum(86.1士16.69)atasotedlngdesniytof4.s7k创in3.枷m^吧.1otcot.31,2003(gld),sludge嫩也址沙心ocneantrtionsolidsat也e比ottmor阮Plaetse川er,34.3lietsreveyrday,awstransferredothteNF-Tgrassifletr住xWXH=3.0X1.2x0.3m)ote腼lalry而gate2.55一m2瓦团沁uluetrdgrasse(FscautarUnClI’)伯ceacSh、b.).67·5Lpuirifedwaterwas邝灿med加mhteNF-TgrassifletrotbackwashhetPVCifletratintevralsof4d.认厄terqaulitiesivnestigationshowedhtat93.8eperentnitrateniotrgen伽03几N),98.9peereinintrietniotrgen伽02一,75.6epcrentTAN,90.9PecerntTN,90.4eperentTP,96.7Peereinsuspednedsolids(55),and74.9PeerentCODWereermovedandPHineerasedform6.92ot8.61.T七egrasswaseliPepdveeyr一8dand582.9g·m”加sh诫hgtwaspedrueed.。州nghet喃olepier掀orhetexpenment,五shes笋w4.559伴rd妙初也afeedeonvesriatonartloof1.610.Iteanbecocnludedhtathtebo加nLiealiflterisa!ow一cost即vu。钊ment一dnwayotsovlehetaceumulationofN,P,CODandsolids,andhtedeseentofPHinecr加uliatng叫川那ultUJalrsystem.s抢ywodr:saqu朗ul奴iralwastewateretraitne;ntericcrulatignaquacultL甘alsyste;mNF;TeFsutca即闭口dmaceaSChreb.