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《水蚤對(duì)污泥減量效果的研究》由會(huì)員上傳分享，免費(fèi)在線(xiàn)閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、摘要隨著城市污水廠越來(lái)越多污泥的產(chǎn)生，處理大量污泥的費(fèi)用越來(lái)越高。利用微型動(dòng)物的捕食作用減量污泥，由于能耗低，不產(chǎn)生二次污染，作為一種生態(tài)工程技術(shù)近年受到關(guān)注。當(dāng)前主要的污水處理方式是活性污泥處理系統(tǒng)，多數(shù)活性污泥處理系統(tǒng)會(huì)產(chǎn)生大量的污泥。大量污泥通常含有多種有毒有害物質(zhì)及未穩(wěn)定化的有機(jī)物，如果不進(jìn)行妥善的處理，將會(huì)對(duì)環(huán)境造成很大的污染。本文采用了節(jié)肢動(dòng)物門(mén)甲殼綱通過(guò)比較COD和SS值進(jìn)行污泥減量化的效果研究，得出以下結(jié)論：(1)水蚤適應(yīng)環(huán)境的能力較強(qiáng)，但是最適水蚤生長(zhǎng)的環(huán)境范圍卻很窄。適合水蚤生存
2、的溫度為24℃，PH值為7，鹽度為0．25％(2)水蚤在濾料外部繁殖的密度要遠(yuǎn)高于濾料內(nèi)部，這說(shuō)明水蚤在懸浮系統(tǒng)中生長(zhǎng)狀況好于附著型生長(zhǎng)系統(tǒng)。(3)水蚤平均繁殖周期為三天，并且水蚤的日衰減率為14．67％(4)投加20個(gè)水蚤時(shí)COD的去除率為47．52％(5)水蚤具有一定的捕食細(xì)菌和減量污泥的能力。關(guān)鍵詞：水蚤；污泥；污泥減量AbstractThesludgedisposalbecomesmoredifficultthanbefore，becauseofitsmoreproductionandexp
3、ensivedisposalcost．Thereductionofsludge，oneofecological‘a(chǎn)pproachesthroughpredationofmicrofaunal，hasbeenpaidmoreattentionbecause0fitslittleenergywasteandwithoutthesecondpollution．’Activatedsludgetreatmentsystemisleadingwatertreatmentmethods．Activatedslu
4、dgetreatmentsystemresultinalargenumberofsludge．Thereareaplentyoftoxicandhazardoussubstancesandunstabilizedorganicmatterinthesludge．Ifnotproperlyhandled，itwillresultindirectorpotentialenvironmentalcontamination．Inthispaper，Thedaphniafunctionforsludgered
5、uctionwasresearchedbycomparetheCODandSSofeffiuentwater．Theresultsindicatedthat：(1)Daphniahasstrongabilitytoadapttotheenvironment，buttheoptimalenvironmentforthegrowthofDaphniaisverynarrow．theoptimalforDaphniagrowisthetemperature：24"C，PH：7，salinity：O．25％
6、．(2)ThebreedingdensityofDaphniaintheexternalcarriershouldbemuchhigherthantheinternalcarrier，ThisshowsthatthegrowthofDaphniainthesuspensionsystemisbetterthanattachment-basedgrowthsystem．(3)Theaveragereproductivecycleofdaphniaisthreedaysandit’Sdecayrateo
7、fonedayisl4．67％．(4)When20Daphniawereadded，theCODremovalrateis47．52％．(5)Daphniahastheabilitytopreybacteriaandreducesludge．Keywords：Daphnia；sludge；sludgedecrementⅡJ】●目錄摘要?????????????????????????????????????·IAbstract·····································
8、········································································II1概論????????????????????????????????????·11．1污泥處理及污泥減量化???????????????????????·11．1．1污泥處理的現(xiàn)狀??????????????????????·11．1．2污泥減量化的研究意義及重要性???????????????11．2污泥減量技術(shù)的研究
