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《強化混凝法處理定海區(qū)紅衛(wèi)水庫微污染水源水實驗研究【文獻綜述】》由會員上傳分享,免費在線閱讀,更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫。
1、畢業(yè)設(shè)計文獻綜述環(huán)境科學(xué)強化混凝法處理定海區(qū)紅衛(wèi)水庫微污染水源水實驗研究[摘要]本文概述了當(dāng)前國內(nèi)外混凝劑的發(fā)展?fàn)顩r以及我國混凝法水處理技術(shù)現(xiàn)狀及發(fā)展,通過用強化混凝法處理微污染水源的水實驗研究,對硫酸鋁、硫酸鐵、聚合硫酸鐵為代表的混凝劑進行系統(tǒng)的實驗,測其出水COD及氨氮值濃度及其去除率,選出適合處理紅衛(wèi)水庫水源的單一混凝劑和投加量,通過改變混凝劑的混合速度、混合時間和PH等,確定影響混凝的影響因素和最佳條件,通過混凝劑復(fù)配,得出混凝劑的最佳配比。實驗表明在硫酸鋁,硫酸鐵,聚丙烯酰胺三種混凝劑實驗中,硫酸鋁對COD和氨氮的去除效果最好,去除率分別為46%、37%,其最佳投加量
2、為9mg/L,在混合速度550r/min,混合時間30s,PH值范圍控制在6.5~7.0混凝效果比較理想。在混凝劑復(fù)配實驗中,硫酸鋁與聚丙烯酰胺比例按60%復(fù)配混凝效果最佳,硫酸鐵與聚丙烯酰胺比例按80%復(fù)配混凝效果最佳。從實驗可以看出強化混凝工藝能有效提高有機物去除率,提高飲用水水質(zhì),是一種可行又經(jīng)濟的水處理方法。[關(guān)鍵詞]強化混凝法;混凝劑;微污染水源;水處理SlightlypollutedsourcewaterofHongWeireservoirinDingHaiexperimentalstudybyEnhancedcoagulationmethod[Abstract]T
3、hispapersummarizesthecurrentdomesticandinternationalcoagulantdevelopmentstatusandcoagulationmethodinwatertreatmenttechnologysituationanddevelopment,throughenhancedcoagulationmethodtreatmentwiththeslightlypollutedwater,waterexperimentofalumina,ferricsulfate,polymerizationrepresentedcoagulants
4、systemicexperimentandthemeasureditsoutletCODandammonianitrogenremoval,concentrationanditsvaluetochoosethesuitableprocessingGongWeireservoirwatersinglecoagulantsanddosingquantity,throughthechangeofcoagulanthybridspeed,mixingtimeandPH,ascertainthecoagu-flocculationtheinfluencefactorsandthebest
5、condition,bycoagulants,itisconcludedthatblendswiththebestproportionofcoagulants.Experimentalresultsshowthealuminiumsulfate,PAM,threekindsofcoagulantexperiments,aluminiumandammonianitrogenofCODremovalefficiencyofbest,46percent,respectivelyforremovalof37%,itsoptimumdosingquantityfor9mg/L,in550
6、r/min,hybridspeedmixed30s,pHrangetimecontrolin6.5~7.0coagulationeffectisideal.Incoagulantblendswithexperiments,aluminiumandPAMproportionby60%blendswithbesteffect,ferricflocculationandPAMproportionto80%flocculationblendswithbesteffect.Fromtheexperimentcanseeenhancedcoagulationtechnologycaneff
7、ectivelyenhancetheorganicsremovalrateandimprovethedrinkingwaterquality,itisafeasibleandeconomicwatertreatment.[Keywords]Enhancedcoagulationmethod;Coagulants;Slightlypollutedwater;Watertreatment引言近年來,全國水污染仍呈發(fā)展趨勢,工業(yè)發(fā)達地區(qū)水域污染尤為嚴(yán)重。7大水系和內(nèi)陸河流的110個重點河段,符合“