詹德昊, 吴振斌, 张 晟, 成水平, 傅贵萍, 贺 峰(中国科学院水生生物研究所淡水生态与生物技术国家重点实验室,湖北武汉430072) : 复合垂直流人工湿地系统(IVCW)堵塞后其水力特征会发生变化,通过示踪剂对小试和中试系统堵塞前后的水力特征进行了研究。结果表明,堵塞后IVCW出水流量减小,小试系统实际停留时间由堵塞前21.3h延长至32.5h,中试系统实际停留时间从19.4h延长至26.8h。IVCW堵塞后容易造成下行池表面积水,既恶化了卫生条件又降低了系统的处理能力。 : 人工湿地; 堵塞; HRT; 水力特征; 示踪试验:X171.4 :A :1000-4602(2003)02-0001-04InfluenceofCloggingontheHydraulicCharacteristicsofIntegratedVerticalFlowConstructedWetlandZHANDe-hao, WUZhen-bin, ZHANGSheng, CHENGShui-ping, FUGui-ping, HEFeng(StateKeyLabofFreshwaterEcologyandBiotechnology,InstituteofHydrobiology,ChineseAcademyofScience,Wuhan430072,China) Abstract: Variationinthehydrauliccharacteristicsofintegratedverticalflowconstructedwet-land(IVCW)willoccurafteritisclogged.Studywasmadebyusingtraceronthehydrauliccharacter-isticsofsmall-scaletestsystemandpilot-scalesystembeforeandaftertheirclogging.Theresultin-dicatedthattheoutflowfromIVCWisdecreasedwhenitisclogged.Inthesmall-scalesystem,thehydraulicretentiontime(HRT)isextendedfrom21.3hto32.5h,andinthepilot-scalesystemHRTisextendedform19.4hto26.8h.ThecloggingofIVCWwillresultinfreewater(waterlog)onthesurfaceofdown-flowchamber,whichwillnotonlydeterioratethesanitaryconditionbutalsodecreasethetreatmentcapacityofthesystem. Keywords: constructedwetland; clog; HRT; hydrauliccharacteristics; tracerexperi-ment :(39925007); (KSCX2-SW-102) 。TannerCC[1],RyszardBlazeJewski,[2]。·1· 2003Vol.19 CHINAWATER&WASTEWATER No.2ChristophPlatzerKlausMauch、,[3]。J.Laber,R.Haberl,R.PerflerG.Langergraber[4]。[5],。(IntegratedVerticalFlowConstructedWetland,IVCW)“”、(:ERBIC18CT960059)。、,、、,。,,。1 材料与方法1.1 IVCWIVCW,,。,10cm。。1。1 IVCW1m×1m,0.45m,0.55m,,4mm(25~35cm),10cm、4~8mm,16~32mm。,。9m×9m,。1.2 ,800mmd,4,5h。1.3 ,、。(RN)、(IGL)、(615)、(B2RN)NaCl,NaCl,[6],NaCl。1.4 ,,。1.5 —,NaCl,10,IVCW,。。WTWLF197-S,15min,128KMacroDataLogger。2 结果与讨论2.1 IVCW800mmd,2。2 2,,(170Lmin89Lmin),·2·2003Vol.19 No.2。IVCW、5h8h,5h。,,,,,,。3。,,,,,。,,,,、。3 2.2 。,,,IVCW、,。NaCl4。4 4,IVCW,,,。IVCW、IVCW[7]: tth=nVQ×24(1) tth———,h n———,0.32 V———IVCW,m3 Q———,m3d,0.8m3d13.4h。tm[7]: tm=∫∞0t·E(t)·dt(2),IVCWtm=21.3h,tm=32.5h。52.6%,。2.3 1999,。2001,2000mmd,。,,,30cm。,,,5。5 ,,,。·3·2003Vol.19 No.2(1)、(2),13.4h;19.4h,26.8h,38%。[8],,。,,。IVCW,,,,,,,,。IVCW,,。,IVCW,IVCWBOD5、COD。,,,。,。,。3 结论① IVCW,,,。② ,IVCW:21.3h,32.5h;19.4h,26.8h。③ IVCW,,,IVCW、。致谢:感谢奥地利维也纳农业大学提供实验仪器;参与研究工作的还有邱东茹、陈德强、周巧红、徐光来、杨涛、王雄辉、陆国胜、何芳、陶菁、邓萍、刘爱芬、张利华等同志,夏宜铮研究员,詹发萃、刘保元、邓家齐、谭瑜云、庄德辉副研究员,作者在此对他们的贡献表示诚挚的谢意!:[1] TannerCC,SukiasJP.Accumulationoforganicsolidsingravel-bedconstructedwetlands[J].WatSciTech,1995,32:229-240.[2]RyszardBlazejewski,SadzideMurat-Blazejewska.Soilcloggingphenomenainconstructedwetlandswithsubsur-faceflow[J].WatSciTechn,1997,35:183-188.[3] PlatzerC,MauchK.Soilclogginginverticalflowreedbeds-mechanism,parameters,…consequencesand…so-lutions[J].WatSciTech,1997,35:175-181.[4] LaberJ,HaberlR,PerferR,etal.Influenceofsubstratecloggingonthetreatmentcapacityofavertical-flowconstructedwetlandsystem[A].InProceedingof7thIn-ternationalConferenceonWetlandSystemsforWaterPollutionControl[C].Floria,2000.[5] ,,,.[J].,1991,4(5):17-22.[6] ,,.[J].,1995,14(4):11-15.[7] .[M].:,1992.[8]USEPA.Constructedwetlandstreatmentofmunicipalwastewater[M].EPA625R-99010,1993.:(1972- ), , , , , 。:(027)87214832(O) 87413089(H)E-mail:dehaozhan@sina.com:2002-10-08·4·2003Vol.19 No.2