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时间:2020-02-02
《Unit 12 Wastewater Treatment.ppt》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、Unit12WastewaterTreatment第12单元废水处理9/9/20211Unit12Whatcourseshaveyoulearnedduringcollege?Required/compulsorycourses:water/air/noisepollutioncontrolengineering;solidwastetreatment…Questions:Whatiswastewatertreatment?Howmanytypeswerethewastewatertreatmentdividedto?Whatisthecurrentstatusinwastewat
2、ertreatment?9/9/20212Unit12第一部分:课文阅读一、the1stpara.1.the1stsentencereuse[‘ri:’ju:z]vt.再用,重新使用[‘ri:’ju:s]n.再用,重新使用ex:wastewaterreusemunicipalwastewaterreuse2.the2ndsentencedischargepermit:ex:dischargestandard:dischargepipe:废水再用城市中水回用排放许可;排污许可证排放标准排水管9/9/20213Unit12treatmentmethods二、the2ndpara.1.t
3、he2ndsentencetheremovalofsth.(N、P、COD…)去除某物质去除率…?2.the3rdsentenceTypesofwastewatertreatment:(1)primarytreatment:Screening:(coarsescreening)Sedimentation:(Sedimentationtank:)theremovalratesofsth.(N、P、COD…)一级处理筛选粗格栅沉淀/降沉淀池9/9/20214Unit12Flotation(andskimming):(skimmingtank:)Oilseparation…——physi
4、calNeutralization:(~reaction:)Coagulation:Ionexchange:Ozonation:Cholorination:——chemical浮选撇油槽中和中和反应混凝离子交换臭氧化;臭氧化作用氯化消毒9/9/20215Unit12(2)secondarytreatment(biologicaltreatment):二级处理Activatedsludgeprocess:Extendedaeration(totaloxidationprocess):延时曝气法(aeration:n.曝气;通风,通气aeration tank:)(an)aerobic
5、treatment:Oxidationponds:Septictank:(septic:n.引起腐败的东西;腐败物[剂];a.腐败性的)活性污泥法曝气池(厌)好氧处理氧化塘化粪池9/9/20216Unit12(3)tertiarytreatment(advancedtreatment):三级处理(physical-chemical)Microscreening:Reverseosmosis(RO):Electrodialysis:Nutrientremovalprocesses:(4)typesofadvancedwastewatertreatment:Tertiarytreatm
6、entPhysical-chemicaltreatmentCombinedbiological-physicaltreatment微滤筛反渗透电渗析营养物的去除(N、P)9/9/20217Unit123.the4thsentencegross:总的,毛的ex:grossweight:4.the6thsentenceSuspendedsolid(SS):mixedliquorsuspendedsolid(MLSS):混合液悬浮固体volatilesuspendedsolids(VSS):挥发性悬浮固体剩下内容自学:毛重净重:netweight悬浮固体9/9/20218Unit12第二
7、部分:TechnicalTerms〖技术术语〗biodegradable:可生物降解的ex:biodegradabledetergent:生物降解洗涤剂disperse:使疏散,使分散,分散的ex:dispersemedium分散介质flocculate[‘flɔkjuleit]:絮凝物ex:non-flocculatedmicrobes:非絮凝微生物immobilize:使不动,使固定im-:(用于b,m,p之前)表示“否定,与…相反”之义intermittentl
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