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1、LakeSci.(湖泊科學(xué)),2010,22(5):660-665http:#www.jlakes.org.E—mail:jlakes@niglas.a(chǎn)c.cn◎2010byJournalofLakeSciences淤泥生態(tài)浮床的構(gòu)建及其對(duì)富營養(yǎng)化水體凈化效果胡光濟(jì),周曼,侯浩波,張維昊,陳丹陽(1:武漢大學(xué)資源與環(huán)境科學(xué)學(xué)院,武漢430079)(2:華中師范大學(xué)附屬第一中學(xué),武漢430223)摘要:利用武漢月湖清淤底泥為主要原料,配以膨脹珍珠巖為輕質(zhì)材料、灰渣膠凝材料為粘合劑制得淤泥生態(tài)浮床,并考察其對(duì)富營養(yǎng)化水體的改善效果.研究表明,湖泊淤泥、膨脹珍
2、珠巖、灰渣膠凝材料摻量分別為60%、15%、25%時(shí),浮床模塊的密度、抗壓強(qiáng)度、抗折強(qiáng)度、吸水率、軟化系數(shù)達(dá)到797.2k:g/m、1.02MPa、0.21MPa、13.2%和85.5%,滿足設(shè)計(jì)需要.在為期32d的凈水試驗(yàn)中,淤泥生態(tài)浮床對(duì)富營養(yǎng)化水體凈化效果較好,TN、佃、NH4+.N、P0.P、CODM、Ch1.a(chǎn)的去除率最高分別可達(dá)31.1%、38.6%、37.2%、36.9%、39.7%和48.8%.淤泥生態(tài)浮床有效解決了湖泊清淤底泥的處置問題,并且可對(duì)富營養(yǎng)化水體取得較好的生態(tài)修復(fù)效果,適合推廣使用.關(guān)鍵詞:湖泊淤泥;淤泥浮床;抗壓耐水性能;
3、富營養(yǎng)化水體;凈化效果ConstructionofsludgefloatingbedandpurificationeficiencytoeutrophicwaterbodyHUGuangji,ZHOUMin,HOUHaobo,ZHANGWeihao&CHENDanyang(1:SchoolofResourceandEnvironmentalScience,WuhanUniversity,Wuhan430079,P.R.China)(2:№.1MiddleSchoolAt~chedtoCentralChinaNormalUniversity,Wuhan43
4、0223,P.R.China)Abstract:AsludgefloatingbedusingdredgedsludgefromtheLakeYuehuasmainmaterialwasconstructed,andexpandedperliteandslageementitiousmaterialalsointroducedasthelight—weightagentandthebindingagent.Theeffectofimprovementofthefloatingbedoneutrophicwaterqualitywasinvestigate
5、d.Theresultshowedthatthedensity,compressivestrength,flexuralstrength.waterabsorptionandsoflencoeficientofthesmalmoduleofsludgefloatingbedwere797.2ks/m,1.02MPa,0.21MPa,13.2%and85.5%,respectively.Whenthemixingamountoflakesludgewas60%,andexpandedperliteandslagcementitiousmaterialwas
6、15%and25%,respectively,theresultsofthe32days’waterpurificationexperimentshowedthatthesludgefloatingbedhadfavorableeffectonthepurificationofeutrophicwater,andthehighestremovalratesofTN,TP,NH;-N,po43-_PCODMandCh1.a(chǎn)were31.1%,38.6%,37.2%,36.9%,39.7%and48.8%,respectively.Allthoseshowt
7、hatthe,sludgefloatingbedcannotonlysolvetheproblemofdepositionofthedredgedsludgeeficiently,butalsocouldhavefavorableper-formanceintherestorationofeutrophicwater,thusitisworthytowidelyutilization.Keywords:Lakesludge;sludgefloatingbed;compressivestrengthandanti—softenability;eutroph
8、icationwater;purificationeficiency水體富營養(yǎng)化