冬春季节浮床技术净化重污染河水的动态试验研究严以新

　　:2005-07-18:“”“863”(2003AA601070):(1949—),,,,、.-严以新1,操家顺2,李欲如2(1.,　210098;2.,　210098):以苏州市重污染河道水体为研究对象,在冬-春季节进行利用浮床技术种植水芹菜净化重污染河水的动态试验.研究结果表明,进水ρ(TN)和ρ(TP)分别为7.05～9.99mg/L和0.29～0.73mg/L时,水芹菜能正常生长,在水力负荷为0.5m3/(m2·d)的条件下,水芹菜浮床对重污染河水中的NH3-N,TP,TN的去除率与水温正相关,对藻类的抑制作用稳定;营养盐的去除负荷随原水质量浓度的增加而增大.水芹菜是冬-春季节净化重污染河道的经济有效的生物材料.:浮床;水芹菜;模拟河道;水力负荷;净化效果:X703　　　:A　　　:1000-1980(2006)02-0119-04,,,、[1-4].2090,,[5]、[6]、[7],[8],、,-.,.1　1　Fig.1　Schematicmapofflumeexperimentforrivercoursesimulation1.1　.3.0m()×0.5m()×1.2m(),1.0m.,1.8m3,1.5m3..,2.,,1.20041124,200546,-.,31.25L/h,48h,0.5m3/(m2·d).3.12004112420041226,12.0℃;22005122005130,4.4℃;3200539200546,12.4℃.1.2　.,,34220063()JournalofHohaiUniversity(NaturalSciences)Vol.34No.2Mar.2006,GB3838—2002《》Ⅴ,.1.1　Table1　Pollutantconcentrationoftestedriverwaterρ(DO)/(mg·L-1)ρ(TN)/(mg·L-1)ρ(NH3-N)/(mg·L-1)ρ(TP)/(mg·L-1)ρ(CODMn)/(mg·L-1)ρ(Chl-a)/(mg·m-3)0.1～2.57.1～10.04.8～8.60.29～0.737.6～13.418.3～80.1,,.1.3　(Oenanthejavanica),,2,,,.20049,20041024.1.5kg,35%.1.4　[9](NH3-N),-(TN),(TP),a(Chl-a),.8:00～9:00.(η)(L)η=ρi-ρeρi×100%　　L=Qρi-ρeA:L———;A———;Q———;ρi———;ρe———.2　2.1　2　Table2　Growthcomplexionoftestedplantintestedwater/cm/cm/kg10.27.31.51.046.532.513.714.5　　2.5,,1、0℃,,.、,,,,.2.2　2.2.1　氨氮的去除效果2(a),NH3-N,,.112.0℃,NH3-N16.64%;24.4℃,NH3-N14.14%;312.4℃,NH3-N23.13%.NH3-N,.31,NH3-N1,,,.,.2.2.2　总氮的去除效果TN2(b).112.0℃,TN20.17%;24.4℃,TN12.24%;312.4℃,TN22.78%.TNNH3-N.2.2.3　总磷的去除效果2(c),TP,TP0.3mg/L,TP.12.0℃,4.4℃,12.4℃3,54.69%,37.44%,120()342　Fig.2　Removaleffectofeachpollutant55.62%,TPNH3-NTN..2,37%.2:,;,,.2.2.4　对藻类的抑制作用,a(Chl-a).Chl-a、,,,.Chl-a;,-,Chl-a.3,3Chl-a3　Fig.3　Inhibitiononalgae4　Fig.4　Relationshipbetweeninflowconcentrationandremovalrateofnutritivesalt(61.86mg/m3,31.65mg/m3,83.50mg/m3),57.61%,55.67%,58.46%,.2.3　,.0.5m3/(m2·d),4.,TN,TP,.,,N,P.2.4　-,,.3TN,TP3.TN1212,　-3　Table3　Removalratesofnutritivesalt/(g·m-2·d-1)TNTP10.8450.13020.4950.06531.0650.1450.802g/(m2·d),TN0.113g/(m2·d).1hm2,114,1459.65kg、205.65kg,.5.8kg,110481kg/hm2.1/kg,7365.4.3　　　a.,-,、.b.0.5m3/(m2·d),NH3-N,TN,TP,TN0.802g/(m2·d),TP0.113g/(m2·d);,57.25%.c.TN,TP,、.d.,,.:[1]BACHANDPAM,HOMEAJ.Denitrificationinconstructedfree-watersurfacewetlands:II.Effectsofvegetationandtemperature[J].EcolEng,2000,14(1):17-32.[2],,,.[J].,2004,20(11):6-9.[3],,.[J].:,1999,35(4):518-522.[4],.[J].,2001,21(3):30-33.[5],,,.[J].,1994,7(4):7-12.[6],,.[J].,1998,9(1):107-109.[7],,.[J].,1991,12(4):47-51.[8],,,.、[J].,1998,18(5):489-494.[9].[M].4.:,2002:223-279.Dynamicpilotstudyonpurificationofheavilypollutedriverwaterwithfloatingbedtechnologyinwinter-springYANYi-xin1,CAOJia-shun2,LIYu-ru2(1.AcademyofScienceandTechnology,HohaiUniversity,Nanjing210098,China;2.CollegeofEnvironmentalScienceandEngineering,HohaiUniversity,Nanjing210098,China)Abstract:AdynamicpilotstudyonpurificationofheavilypollutedriverwaterbyplantingOenanthejavanicawithfloatingbedtechnologywasperformed.Someconclusionsweredrawn:OenanthejavanicagrewnormallywhenTNandTPconcentrationsinrawwaterwere7.05-9.99mg/Land0.29-0.73mg/Lrespectively;withthehydraulicloadbeing0.5m3/(m2·d),theremovalratesofNH3-N,TP,andTNfromheavilypollutedriverwaterbyOenanthejavanicafloatingbedwerepositivelyrelatedtowatertemperature,anditinhibitedthegrowthofalgaestably;themeanremovalrateofnutritivesaltincreasedwiththeconcentrationofrawwater.Asaresult,Oenanthejavanicaisaneconomicalandeffectivebiologicalmaterialforpurificationofheavilypollutedrivercoursesinwinter-spring.Keywords:floatingbed;Oenanthejavanica;rivercoursesimulation;hydraulicload;effectofpurification122()34