城市景观水体水质净化的人工湿地设计张琼华

3　11环境工程学报Vol.3,No.11200911ChineseJournalofEnvironmentalEngineeringNov.2009张琼华　吉倩倩　王晓昌　黄廷林(,710055)　　、、、,。,5,,。　　　　　X505　　　A　　　1673-9108(2009)11-1965-04DesignofconstructedwetlandforwaterqualitypurificationofurbanlandscapewaterZhangQionghua　JiQianqian　WangXiaochang　HuangTinglin(SchoolofEnvironmentalandMunicipalEngineering,Xi'anUniversityofArchitectureandTechnology,Xi'an710055,China)Abstract　Fromthedesignscale,waterqualitystandard,theplaneanddikedesign,influentways,anti-seepagestructuredesignandtheplantspeciesoftheconstructedwetlandarea,thedesignproposalofconstructedwetlandforthewaterqualitypurificationofurbanlandscapewaterwasintroduced.Takingadvantageofthenatu-ralterrainofthedistrictinnorthwestofChina,afive-stagemultistepconstructedwetlandwasdesigned.Itmadesurethattheeffluentwaterqualitytoparticipateinthewatercyclemetabolismoftheartificialriverorlakesys-tem.Keywords　constructedwetland;scale;waterquality;anti-seepagedesign:“”(2008ZX07317-004):2009-01-06;:2009-02-01:(1981～),,,。E-mail:[e-mail]　　2070,--、。,、、、、、、、。,、、、、、、,600、,、、200[1～6]。,、、、,[7～15]。,,,、,。,。1　1.1　,,1,40000m2,90000m3/d。,,。Q=67500m3/d。1.2　,3。《》(GB3838-2002)Ⅳ。1。1　Table1　Influentandeffluentofwaterqualitystandardinconstructedwetland(mg/L)CODBOD5TNNH3-NTP≤50≤10≤10≤5(8)≤0.5≤30≤6≤1.5≤1.5≤0.32　COD、BOD5、TN、NH3-NTP,。,,。2.1　:AB=Q(CB-Ce)N,AB———(m2);Q———(m3/d);CB———(g/m3);Ce———(g/m3);N———(g/m2·d)。,COD、BOD5、TN、NH3-NTP5N5.0～18g/(m2·d)、1.5～5g/(m2·d)、2.5～8g/(m2·d)、2～5g/(m2·d)0.3～0.5g/(m2·d)。,,COD:AB=84375m2;BOD5:AB=77143m2;TN:AB=88269m2;NH3-N:AB=78750m2;TP:AB=33750m2。,,88000m2。2.2　[16～18],M0.6～1.2m3/(m2·d),M0.8m3/(m2·d),:AB=Q/M=67500/0.8=84375m2,(TN)88000m2,7000m2,95000m2。3　3.1　1,、,。。:490m;()580m;()670m;()730m;()780m;()500m。:B×H=(2.0m×2.0m)+[(2.0m+3.0m)×2.5m÷2]=10.25m,。1　Fig.1　Cross-Sectionstructureofdikeinconstructedwetland3.2　,,,。5,8000m2、15000m2、17000m2、22000m226000m2,3750m,,2m。。2,3。,1m,,。　　196611:2　Fig.2　Planoftheconstructedwetland3.3　,,、,,,。(),,,、、、,、、、。2。3　Fig.3　Cross-sectionstructureofconstructedwetland2　Table2　Watersupplyoffive-stagemultistepconstructedwetland(m3/d)6136.411505.713039.816875.019943.106136.417642.130681.947556.96136.417642.130681.947556.967500.0、、、,,,,。。4　,19673,,,1∶9,300mm。,,200mm,。7.5×10-7cm/s。,,。15～17。5　。,[16～20]。,、,、。,,,,。(Cannaindica)、(Iristectorum)(Cyperusalternifolius);(Epiprem-numaureum)(Monsteradeliciosa),,,,1m,,3。3　Table3　Effectofplantonimprovementofwaterquality(%)NH3-N9092849790COD4842304550TN6779598455TP66956093596　　,。,,,,。,,。[1],,..,2008,30(2):7～10[2],..,2005,24(2):76～79[3]ChriscTanner.Treatmentofdairyfarmwastewaterinhori-zontalandup-flowgravel-bedconstructedwetland.WaterScienceandTechnology,1994,29(4):85～93[4]..,1994,16(3):83～86[5]..,2008,34(9):26～29[6]LongM.Nguyen.Organicmattercomposition,mirrobialbiomassandmicrobialactivityingravel-bedconstructedwetlandstreatingfarmdairywastewaters.EcologicalEngi-neering,2000,16:199～221[7],,.、.,2008,30(4):141～146[8],,,..,2008,2(3):319～323[9],,,..,2004,23(6):1046～1049[10],,,..,2003,24(l):80～83[11],,,..,2005,26(l):47～50[12],,,..,2005,26(1):51～55[13],..,2003,19(1):23～24[14],,,..,2006,27(2):253～256[15],,,..,2005,21(8):37～40[16]..,2001,27(18):35～36[17]ChenZ.M.,ChenB.,ZhouJ.B.,etal.Averticalsubsurface-flowconstructedwetlandinBeijing.Communi-cationsinNonlinearScienceandNumericalSimulation,2008,13(9):1986～1997[18]RousseauD.P.L.,LesageE.,StoryA.,etal.Con-structedwetlandsforwaterreclamation.Desalination,2008,218(1～3):181～189[19],..,2006,32(11):25～27[20],,,..,2007,23(2):39～421968