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1、第8卷第2期環(huán)境工程學(xué)報(bào)Vo1.8.No.22014年2月ChineseJournalofEnvironmentalEngineeringFeb.2014基于響應(yīng)面法的污泥快速固化效能綜合影響周健曾小軍周炯楊志劉杰陳飛(重慶大學(xué)三峽庫區(qū)生態(tài)環(huán)境教育部重點(diǎn)實(shí)驗(yàn)室,重慶400045)摘要針對(duì)現(xiàn)有污泥固化技術(shù)存在的固化養(yǎng)護(hù)時(shí)間長、低溫條件下固化效能低等問題。研究提出污泥快速(3d)固化技術(shù),采用響應(yīng)曲面分析方法,重點(diǎn)考察了石灰、組分A、硅酸鹽水泥、粉煤灰和溫度等5因素對(duì)固化效能的綜合影響,研究結(jié)果表明,石灰、組分A、硅酸鹽水泥、粉煤灰和養(yǎng)護(hù)溫度等因素對(duì)3d固化體的無側(cè)限抗壓強(qiáng)度和含水率的線性效
2、應(yīng)顯著,石灰和組分A、石灰和養(yǎng)護(hù)溫度對(duì)無側(cè)限抗壓強(qiáng)度的交互影響顯著,石灰和粉煤灰、組分A和養(yǎng)護(hù)溫度、硅酸鹽水泥和粉煤灰對(duì)含水率的交互影響顯著;得出了5因素對(duì)固化體3d無側(cè)限抗壓強(qiáng)度和含水率影響的定量模型,可對(duì)污泥快速固化進(jìn)行優(yōu)化和預(yù)測(cè);并利用XRD和SED對(duì)污泥固化塊的化學(xué)成分和微觀結(jié)構(gòu)進(jìn)行了分析。關(guān)鍵詞響應(yīng)面污泥固化無側(cè)限抗壓強(qiáng)度含水率中圖分類號(hào)X703.1文獻(xiàn)標(biāo)識(shí)碼A文章編號(hào)1673.9108(2014)02.0408-07CombinedeffectsofsludgerapidsolidificationusingresponsesurfacemethodologyZhouJian
3、ZengXiaojunZhouJiongYangZhiLiuJieChenFei(KeyLaboratoryoftheThreeGorgesReservoirRegion’sEco-Environment,MinistryofEducationChongqingUniversity,Chongqing400045,China)AbstractTheexistingsludgesolidificationtechnologyhasproblemssuchaslongcuringtime,andloweffi-ciencyatlowtemperature.Inallusiontothesep
4、roblems,therapidsludgerapidsolidificationtechnology(3d)wasputforwardinthisstudy.Methodofresponsesurfaceanalysiswasperformedtostudythecombinedeffectsofthefollowingfivefactors:lime,ingredientA,Portlandcement,flyashandtemperaturetosolidificationefficien—cy.Resultsindicatedthatallthefiveabovefactorsh
5、avearemarkablelineareffectonunconfinedcompressivestrengthandwatercontentof3dsolidifiedbody.Inaddition,limewithingredientAandlimewithtemperaturehavearemarkablereciprocalinfluenceonunconfinedcompressivestrength,whilelimewithflyash,ingredientAwithtemperatureandPortlandcementwithflyashhaveasignifican
6、treciprocalinfluenceonwatercontent.Quan—titativemodelsoffivefactorsonunconfinedcompressivestrengthandwatercontentwereformulated,whichcanoptimizeandpredicttherapidsludgesolidificationprocess.Atthesametime,thechemicalcompositionandmi—crostructurewerestudiedusingscanningelectronmicroscope(SEM)andX-r
7、aydiffraction(XRD).Keywordsresponsesurfacemethodology;sludgesolidification;compressivestrength;watercontent近年來,我國在污水處理率大幅提高的同時(shí)污處理達(dá)到相關(guān)準(zhǔn)入標(biāo)準(zhǔn)后方能進(jìn)行填埋處置,對(duì)污泥產(chǎn)量迅速增加,2011年底,全國運(yùn)行的污水廠已泥進(jìn)行固化處理能夠降低污泥的含水率,改善污泥達(dá)到3100多座,脫水污泥產(chǎn)量接近3000萬t