冬季低温条件下浮床植物对富营养化水体的净化效果李欲如

:,,1981,,。*“”“863”(No.2003AA601070)。冬季低温条件下浮床植物对富营养化水体的净化效果*李欲如　操家顺(,210098)　　,,、3。,34.0～10.1℃,TN、NH+4-N、TP、CODMn59.3%～29.2%、65.2%～39.3%、55.6%～33.9%,55.7%～49.5%,88.4%～92.3%。,,,。,。　　　　　　　Purificationeffectsoffloatingbedplantsoneutrophicwaterbodyunderlowtemperatureinwinter　LiYuru,CaoJiashun.(CollegeofEnvironmentalScienceandEngineering,HohaiUniversity,NanjingJiangsu210098)Abstract:　ThepurificationeffectofOenanthejavanica,LoliummutliflorumandAlliumsativumoneutrophicwaterbodywasinvestigatedunderlowertemperatureconditioninwinterusingsoillessfloatingbed.Theresultsshowedthatallthethreeplantsgrewwellwhenthewatertemperaturewascontrolledbetween4.0℃and10.1℃.TheremovalratesofTN,NH+4-N,TP,CODMnfromwaterwere59.3%～29.2%,65.2%～39.3%,55.6%～33.9%,55.7%～49.5%,respectively;whiletheinhibitiononalgawas88.4%～92.3%.Amongthethreekindsofplants,thepurificationcapacityofOenanthejavanicaisbestandtheAlliumsativumisworst.Theinvestigationwillnotonlyenrichtheapproachesofdealingwitheutrophicwaterbodyunderlowertemperatureconditioninwinter,butalsoofferareasonforthechoiceoffloatingbedplantinwinter.Keywords:　OenanthejavanicaLoliummutliflorumAlliumsativumWinterEutrophicwaterbodyPu-rificationeffect　　DO,,,[1]。[2,3]、[4,5],[6,7]。[8,9],。,(4.0～10.1℃),、3,。1　1.1　供试植物3、、。,2～5cm,,5～10cm。1.2　供试水样,:TN8.76mg/L,NH+4-N5.75mg/L,TP0.493mg/L,PO3-40.25mg/L,CODMn8.86mg/L,a25.80mg/m3,DO0～2mg/L。[10](NQI):NQI=COD/CODS+ρ(N)/ρ(NS)+ρ(PO3-4)/ρ(PO3-4S),CODS、ρ(NS)、ρ(PO3-4S),3.000、0.300、0.045mg/L。NQI3,2～3,2,NQI37.7,。1.3　试验方法7120L,100L。6145cm,5cm,10cm×10cm4,。505　DOI:牨牥牨牭牴牳牭牤jcnki牨牥牥牨牫牳牰牭牪牥牥牭牥牱牥牥牳3100g,(),,;。。60d,200411202005119,,4.0～10.1℃,1。60d10.1℃,4.0～5.0℃。1　　　5d,100mL,,,。1.4　测定项目和计算方法[11]NH+4-N;-TN;TP;CODMn;a;。。:(%)=(C0-Ci)-(C0-Ccki)C0×100%:C0;Cii;Cckii。2　2.1　供试植物在富营养化水体中的生长状况31。　　,、,,3。2,、、、,,,187.9%,(123.0%)(105.2%),。2.2　供试植物对富营养化水体中N、P的去除效果2,、、TNNH+4-N,TN8.76mg/L1.96、3.96、3.89mg/L,6.45mg/L;NH+4-N5.75mg/L0、0.95、1.49mg/L,3.75mg/L。、、TN51.3%、41.0%、33.3%;NH+4-N65.2%、63.8%、47.7%,TN,。4.0～5.0℃TN、NH+4-N,0℃,;。2　TN、NH+4-N1　　　/cm/cm/g/g7.622.33.218.4100.0287.915.237.45.617.62.812.5100.0223.018.735.78.218.34.514.3100.0205.217.632.8506　　27　7　200510　　3TP(3)。、、TP0.493mg/L0.094、0.192、0.201mg/L,0.368mg/L。、、TP55.6%、40.4%、33.9%。5.0℃,3TP,4.0～5.0℃,TP,P。3　TP2.3　供试植物对富营养化水体中CODMn的去除效果4,、、CODMn8.36mg/L3.05、3.42、3.76mg/L,8.15mg/L。,,,,DO,CODMn。,。4　CODMn2.4　供试植物对藻类的抑制作用,a。a、,,,。,a。5,,、、(a,(a—a)/a×100%,92.3%、88.4%、89.6%,50.8%;30d,9.6℃(1),a,4～5℃,a,,,。5　2.5　供试植物对富营养化水体净化能力比较3。6,3TN、NH+4-N、TP,:,(1)。,。6　3　　(1)5.0～10.1℃,、、,,。(2),、、N、P、COD,;。(3),。(4),,507　:　,,1961,,。;,。(5),。1　DuyTN,LamPKS,ShawGR,etal.Toxicologyandriskassess-mentoffreshwatercyanobacterial(blue-greenalgae)toxinsinwater.RevitonContamToxicol,2000,163:113～1862　..,1997,17(1):53～573　　,,,..,1999,32(4):33～474　,,..(),1999,35(4):518～5225　,..,2001,32(3):30～336　,,...,2004.402～4067　,,　,..,1996,8(3):268～2718　,,,..,2003,14(2):224～2799　,,,.、.,2004,15(7):1261～126510　..,1995,8(5):36～4111　..4.:,2002.223～279责任编辑:闵　怀　(:2005-07-13)有机官能团对改性硅吸附微囊藻毒素的影响赵亮1NewcombeG2(1.,450003;2.AustralianWaterQualityCentre&CRCforWaterQualityandTreatment,PMB3,Salisbury,SA5108,Australia)　　　-LR(mLR)-LA(mLA)。,0.1×10-6(),;,。　　　Effectsofsurfacefunctionalgroupsofsilicasonadsorptionofmicrocystins　ZhaoLiang1,NewcombeG2.(1.HenanResearchInstituteforChemistry,HenanAcademyofScience,ZhengzhouHenan450003;2.AuatralianWaterQualityCentre&CRCforWaterQualityandTreatment,PMB3,Salisbury,SA5108,Australia)Abstract:　Adsorptionsofmicrocystinsondifferentorganicmodifiedsilicas(OMS)havebeeninvestigated.TheobtainedresultsshowthattheOMScouldeffectivelyremovemLRandmLAfromthewaterincaseofthehavingaconcentrationlessthan0.1×10-6,andtheremovalsincreasedwithincreasingthecarbonnumbersoftheorganicfunctionalgroupsontheOMS.TheselectedadsorptionofmLAwerealsoobservedbetweenmLRandmLAunderthesameexperimentalconditions.Keywords:　Functionalgroups　Organicmodifiedsilicas　Microcystins　Adsorption　　,,。、[1],[2]。　　、、,[3]。,(、)[4],,[5,6]。508　　27　7　200510