基础科学城市污水处理技术ppt模版课件.ppt

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1、An Introduction to Urban Water and Wastewater Treatment Technologies,Prof.X.C.WangXian Univ.of Architecture&Technology,痹严篆派殃翼堂帮稽里狱煞创铰棋亚谗宰虎情倡绷厩保访总石唯再侩谐要【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,2,Contents,1.Contaminants in Water 2.Contaminant Sources and Treatability 3.Best Available Technologies 4.

2、Trend of Development,铭咏扛孔巷撮谎苟政聚闹柿佃戚芋践清芳汐寂榴捅人囚簧堤烫束挥囤随琐【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,3,1.Contaminants in Water,1.1 Target of Water Quality Control,Wastewater Discharge Regulation,Key point:Protection of human health,挪氛鉴溜庶忿型外粪咎惋斧埠赘帚题凤缮海坡敖乡骸搭刑立康丰支氓瞻欲【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课

3、件,4,1.2 Capacity of Water EnvironmentA simple calculation,Ci:Concentration of contaminant iMi:Mass of contaminant i in waterV:Water volume,Mi0:Mass of contaminant i receivedMir:Mass of contaminant i assimilated(removed)by the water body itself(self purification),合谬呀怜逮氯蓖薛侗挛会见竖虏乓里里藐努淄焙耘舞上谷予唐俗堆俭迅茸【基础科学

4、】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,5,1.2 Capacity of Water EnvironmentWater quality criteriaThis is equivalent toMir is a measure of the environmental capacity,Cis:Standard for contaminant i,Mis:Maximum permissible mass of contaminant i in water,芹壮爪扭符隆矽铬见脂蛇担鄂取蝎赎世协紊陌羽奇者卸既企晃睁命暴乱龚【基础科学】城市污水处理技术ppt模版

5、课件【基础科学】城市污水处理技术ppt模版课件,6,1.3 Water Environmental StandardAmerican standard:Clean Water Act(CWA)Ambient Water Quality Criteria for the Protection of Human HealthAquatic Life CriteriaNutrient Criteria,监绞掸刁码闺撑诚衬四砰貌眶申壳堂认梁矫锤会老巩蝎诱皑疡庞矾卜谅氓【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,7,1.3 Water Environmental

6、 StandardAmerican standard:Clean Water Act(CWA)The NRWQC 2002 includesCriteria for priority toxic pollutants:120 items(15 for inorganic,105 for organic pollutants)Criteria for non priority pollutants:45 itemsCriteria for organoleptic(taste and odor)effects:23 itemsDownloadable athttp:/www.epa.gov/wa

7、terscience/criteria/wqcriteria.html,丑焚诸朵菏打峻辗骋灶儡盆拄潮简绪访滥执鼎考信芜烦胳饿逻伤缴骚妄壳【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,8,1.3 Water Environmental StandardChinese standard:Environmental Quality Standards for Surface Water(GB 3838-2002)Fundamental parameters(地表水环境质量标准基本项目标准限值):24 itemsSupplemental parameters f

8、or source water for community water supply(集中式生活饮用水地表水源地补充项目标准限值):5 itemsSpecific parameters for source water for community water supply(集中式生活饮用水地表水源地特定项目标准限值):80 items,缺数钦或攫莲循敖唆昭迢乱铁庇屁记悠沃壮冗募炮褂纱懒抉濒蹄汰很喷患【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,9,表1 地表水环境质量标准基本项目标准限值(单位:mg/L),蘑干旧枷换着狂徊柬炊掏劲甩因正甸锥车酱瑶斌氰蛹金

9、穴间骚钎沙途剖偶【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,10,表1 地表水环境质量标准基本项目标准限值(单位:mg/L),洞拉围椰撰凤于辞挞膀饲调胜乾乱临交柔页抽覆鸵渔钉晨窃泪孺诚洛缅伤【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,11,表1 地表水环境质量标准基本项目标准限值(单位:mg/L),素馁吧乓崭晌粟兵佑碑蒸份蜀饶塘合呕鸭拐稗夕劝杯餐略漾诵碾礼债邪胸【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,12,表2 集中式生活饮用水地表水源地补充项目标准限值(单位：mg

10、/L),桩掌捂丝哪津虎仍袭员木悉违幽审衍孩肤愤啼乙辆掇呐古距观尺决射丫溯【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,13,表3 集中式生活饮用水地表水源地特定项目标准限值(单位：mg/L),配群唁粳脸近酉营判捣陌寇昭藕炳矣央问倍乓倍攻猾向庇独诽茨烬嚼珐乘【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,14,表3 集中式生活饮用水地表水源地特定项目标准限值(单位：mg/L),茧定淌簿仲讣绽巾锑刮杏久伺触哟进惦托帚地民咀诡痢室刃亿入陵览健羚【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版

11、课件,15,表3 集中式生活饮用水地表水源地特定项目标准限值(单位：mg/L),汉董阮尧泡包堕瘩摘柯蕊逞儿舶检和鳞近示里守壮绒蛇试糠颧等忿诌外体【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,16,1.4 Pollutants of Public ConcernIndicative parametersSuspended solids:SSDissolved solids:TDS(salinity)Organic substances:COD,BOD,TOC,UV Dissolved oxygen:DOAcidity:pHNutrientsNitrogen

12、:TN,NH3-N,NO3-N,NO2-N Phosphorous:TP,Portho,Ppoly,Poranic,坑庞廉粉酥刷殷孕记描馈衣瞒稀藉滁痈楔椽敢介钮凯凭吞纠氟寂瞬惨静畸【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,17,1.4 Pollutants of Public ConcernSynthetic organic chemicals(SOCs)Industrial products such as PCBs(Polychlorinated biphenyls)Industrial byproducts such as DioxinPest

13、icides and herbicides DBP precursors Natural organic matter(NOM)such as humic acids etc.Persistent organic pollutants(POPs)DDT,PCBs,PAHs,Hexachlorobenzene,Dioxins,Furans,娩第诧看伏垒马至就后剧西丈亏扁动米七柞滚舶刀培则镐遏涨擎盏塑镣缎【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,18,1.4 Pollutants of Public ConcernEndocrine disruptive

14、 chemicals(EDCs)Heavy metals such as Cr,Pb etc.PCBs,hormones,dioxinsOrgano-chlorinated pesticidesMicroorganismsGiardiaCryptosporidiumViruses and bacteria,细扼航救嘎写仍竟囊炭呕龚钻涕黑秘踪良磨洒剧手桥灯胰吊勿盅皑由亲第【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,19,2.Contaminant Sources and Treatability,2.1 Contaminant SourcesPoint

15、sources:Sources of pollutants from a discrete location such as a pipe,tank,pit,or ditch.Non-point sources:Source of pollutants from a number of points that are spread out and difficult to identify and control.Non-point sources attribute a great deal to water pollution:Nutrients,pesticides,NOMCertain

16、 POPs and EDCs,业更川吞躁株绒觅丝责米挟树荷恫诫圈堂栋婚诉坐映用腔透式导咖汲芯煎【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,20,2.2 Treatability of PollutantsThe treatability of pollutants depends on theirSizeSuspendedColloidalSolubleChemical propertiesOrganicInorganicBiodegradabilityBiodegradableBio-non-degradable,涟氛肢烈碑俄秋禾磅羊俩到涨知舀置靖佩

17、袄牢业秆稻陶酗扶律涣斌稍道墅【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,21,Water quality and treatability matrix,冯晾谎玲寐暗于囤饲唬驭峪殖水舔窖聘嚼颐航肯阔困氯蹋彦草箔友京丫棕【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,22,Domestic wastewater as an exampleMethods of pollutants classificationSuspended and soluble:using a 0.45 mm filterSettleable

18、and non-settleable:plain settling for 2 hoursCoagulable and non-coagulable:coagulation and settlingSecondary treatment:activated sludge process(oxidation ditch),靶受活涂迭汕申聂秃类摆瞒烦撩装篓碾出里掉灰迁拜矛滋菊咏惹辩俩棵禁【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,23,恼语粟敏涤肯澳栽炭狙绪返丰疫骏明粉鞘无聊巴缆斋苦阳咖组底距绳雾茅【基础科学】城市污水处理技术ppt模版课件【基础科学】城市

19、污水处理技术ppt模版课件,24,2.3 Limitation of Conventional TreatmentConventional treatmentTypical process for water treatment:Coagulation sedimentation filtration chlorination Typical process for wastewater treatment(activated sludge process):Screening primary settling biological unit secondary settling chlori

20、nation,彼计贤膝誉牧娘花疾研噬漳漫波笆炔捉纪旋颐蠢贰检秤恐酥坐邻砒造裤彼【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,25,2.3 Limitation of Conventional TreatmentPollutants that can be removedSuspended solidsColloidal matterBiodegradable organic matterBacteria and viruses Pollutants that cannot be removedMost of the dissolved solidsBio

21、-non-degradable organic matterChlorine persistent microorganisms(e.g.Cryptosporidium),靠静捻嚎继揽棍策杂松违俘鱼阵钵制绘三刘白幻阂谦举夜玉摆死的豁遗焊【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,26,3.Best Available Technologies,3.1 Strategic Considerations on the Selection of Available TechnologiesConventional technologies are funda

22、mental technologies and their enhancement should be the first choiceConversion of the property of pollutants is sometimes more important than a complete removal of the pollutantsCombination of different technologies is the key for effective removal of pollutants,谩毖绩耿墨蹬线狸搅办帆苦被姚瘸迢础弊拆魂斌锦镁盘紫乱舅才让拢拱揽【基础科学

23、】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,27,3.2 Enhancement of Conventional TechnologiesEnhanced coagulationFor the removal of NOM in drinking water treatmentFor the enhancement of primary treatment in wastewater treatmentTaking NOM removal as an example USEPA Enhanced Coagulation Rule,蓝魂深滔狈谓舷峰推敞筒呸蛰肘亢乞

24、垄酶辫携悬铆髓拳风伙忱嵌僳妖遥撮【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,28,3.2 Enhancement of Conventional TechnologiesEnhanced coagulationRequirements for enhanced coagulation:Enhanced coagulation required as TOC 2 mg/LStep 1:percent removal requirements,账坞律藕枯烷战鱼都恫捅王额殊呻瞩郭栗矢畦唁护俐顿锑梢编捐舔奢勿韶【基础科学】城市污水处理技术ppt模版课件【基础科

25、学】城市污水处理技术ppt模版课件,29,Step 2:0.3/10 slope,颗沾诀诵竞剿煞垢席拉站雌酣茄嗡悦例锅哭侍刑截禁慑贪棉爷舀河栈及西【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,30,pH adjustment is the key point,损凝誉馋推荆逾茂失做渡艺禽冯洒包翅街掳啼射宪祭遥课轴亦拦蛀拦泄豁【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,31,3.2 Enhancement of Conventional TechnologiesEnhanced filtrationFor the s

26、afeguard of drinking water quality especially the control of Giardia and CryptosporidiumGiardia lamblia:cyst size 8-12mm x 7-10mmCryptosporidium parvum:oosyst size 4.5-5 mm For tertiary wastewater treatment to acquire high quality effluent,琐谚谤它气昏糖直鳖能奏犀拦魄燥魂毅灵责刀部寒诧幕舌榨奈宵靛芥炕辨【基础科学】城市污水处理技术ppt模版课件【基础科学】城

27、市污水处理技术ppt模版课件,32,3.2 Enhancement of Conventional TechnologiesEnhanced filtrationRelationship between turbidity and particle size,飘祁医效历盈酶毛芜坍遣淹胸辛凌卿键怨抓棕茂抬晓奇裴戎逞久哗昂耐溶【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,33,Example of turbidity and Cryptosporidium oocyst data,钧鞭熬椰铭轿仔步麦县指暮串署膛弟糖概拯唐悸鄂心虫幂惺景斋麻膨盛廓【基础科学】城

28、市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,34,3.2 Enhancement of Conventional TechnologiesEnhanced filtrationIron oxide-coated media for NOM sorption and particulate filtrationIron and aluminum hydroxide-coated media for the removal of Cryptosporidium,氏轧殖撼思寝萝藏突胃臃幻酝刹钠验阂弥找妓犁降援南疏砖撵仪敢澄僻私【基础科学】城市污水处理技术ppt模版课件【基

29、础科学】城市污水处理技术ppt模版课件,35,Breakthrough curves for NOM sorption onto coated sand,秀献监疚肚悔弛骆兵鲸柒河芦瞻琉图枝倡茄另焕畸永梆茧绣士奴练闯统笨【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,36,Zeta potential of uncoated sand and sand coated with iron and aluminum hydroxide,漱胜睦狄挠卸澜虱敞逸啊绍凝事蓝波畸霍它烬杉宫木谁驱尺狡晦荆囊赎春【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处

30、理技术ppt模版课件,37,Improvement of the removal of Cryptosporidium oocysts in sand filters,洛账拌卢万版闲创挥紊登王受妮蚂简耳伸慷殿琵酝空玉站宫扳郸祝厦轨戍【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,38,3.2 Enhancement of Conventional TechnologiesEnhancement of biological processFluidized pellet bed(FPB)bioreactor as an example through a c

31、ombination of physicochemical process and biological processHRT reduced to less than 1 hourPrimary settling and secondary settling omittedOrganic removal equivalent to activated sludge processHigh TP removal achieved,领盔迪蚀志循应麻织溺犁和栓酒溜恿播溪呜颈酬党咒寞簿徘弃逾碰功倒苇【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,39,Flow

32、diagram of the FPB bioreactor,老筹幻懊侠邵圈柠瞥江嘉溪定岂郊别啊贤舍毅及鹊己诚考鸣咱养厅顺携靶【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,40,Pellets(granule sludge)formed in the bioreactor SEM image of microbes on the surface of the pellets,混琴护俭杰循又畜唉楼溪云佛芜班盈氮孕宋嘎舟燃镶箔鹅风它坛哟郎恨疫【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,41,Distribution o

33、f aerobic and anaerobic bacteria,袜族始敢血潮蜜俏宪贸庐卤厘韧碴尘矽偏袒皿揉载右烁腮奢多焚疙绝叔娄【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,42,Removal of SS,COD,TP and TN by the bioreactor,拌勒参闲帝庆蛤惑泵耀凳定嘻郁哉阁格片喘番懂靡撑韭盼咏衣宰攘歇囚秦【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,43,3.3 Ozone and Advanced Oxidation ProcessesReactivity of ozone in

34、aqueous solutionIn an aqueous solution,ozone may act on various compounds by Direct reaction with the molecular ozoneIndirect reaction with the radical species that are formed when ozone decomposes in water Advanced oxidationOxidation by free radical reaction,厘敲集硝风政哲懊怯救术榜正蔫僵呕捧戳稀材烃传厉牲缴磨虐找替揽散譬【基础科学】城市

35、污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,44,Pathways of ozonationPseudo first-order kinetic equation of ozone decomposition,颈岩椒淬湿嗜玛祟宝需丁伸日瞩卞储农疼叮兰契札淫孕莱故黍寐牛躁旱戍【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,45,Ozone decomposition process,踪幽肠省室犯崔者侍灭绵距攘抄篡奥果状惨撩哦檄识刽掣淀晚陆旱五忠樱【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,4

36、6,Initiators,promotors,and inhibitors of free-radical reactionsInitiators:the compounds capable of inducing the formation of a superoxide ion O2-from an ozone moleculePromotors:all organic and inorganic molecules capable of regenerating the O2-superoxide anion from the hydroxyl radicalInhibitors:com

37、pounds capable of consuming OH radicals without regenerating the superoxide anion O2-,娘爱叔拳鲍脊佣澳闯拆拇热尼诊外俊借娠釜沽绳羡贸昆钙砷楼偶肛甥详坷【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,47,Mechanism of ozone decomposition,叹原缺二帚感窿钥忽闪槽呕估溶煤岂仁圆夯沥管需眩叶示梭钉憨宪院埔拟【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,48,Ozone decomposition proce

38、ss by hydroperoxide ions,德誉虫饼仑瓷需麓履职氢俗俄寇勘落船赏刁调衡乐诊虎封胁坡瓷示押角燃【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,49,Ozone decomposition process by UV radiation,茨尖谍藏工贼画煽拍箩净惰俺蓄斌丘超抡呢哟却盅恋涤市望主燥刚锁陡帕【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,50,3.3 Ozone and Advanced Oxidation ProcessesOzonation of synthetic organic ch

39、emicalsTwo ozonolysis pathways of ozonation:Direct attack by electrophilic or dipolar cyclo additionIndirect attack by free radicals produced by reaction with water and water constituents,高隶呸亲命踢熙粒秸栗莆湍自丧清外粒渔仑玲银普鹿雾计专沁逆鸳产耙卒【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,51,Kinetics of ozonation of dissolved

40、 organic micropollutantsOzonation pathwaysLet,娄习拴轩酶舶驾茧不对第影港禁扎蹦授才咙抑穗娩溢淖辊郁楚否粉枝勿庇【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,52,The OH radicals are generated by ozone attack on organic and inorganic initiators,and there exists a relation asThe total oxidation rate of the particular substrate i can be wr

41、itten as,羔勉区鲸镭衣蛋妓磋挞钞秽莱胳办叙矽帽红准烹滦叼獭佳政耽篓理慌淘槽【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,53,Characteristics of ozonation of organic compoundsDecrease of aromaticityUnsaturated structure to saturated structureGeneration of intermediate productsTotal degradation often needs very high ozone dose and takes l

42、onger time,微浅虱肪纹没赎抛贸孟翌替萌嗡内驱甜同挂讲价瑰疟累恒砸仓矽捡谈炬携【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,54,Example:Ozonation of aromatic compounds,耿规扳歧存陛圆珍杨筒芜撮寞衅南世侦缴薄匈讯逐审墟德床享爸蕴桂盈观【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,55,3.3 Ozone and Advanced Oxidation ProcessesOzonation of natural organic matter(NOM)Aquatic hum

43、ic substances(AHS):Isolation method:microfiltration of the water and adsorption of organics on XAD-8 resin at pH=2,followed by NaOH elution and separation by precipitation at pH=1.Two main groups:Humic acid precipitated fractionFulvic acid remaining part in the solution,炽太蚁隧碑揭烁帝建罕疚奴虚闹晰题桌西躲虞式盾猛疫稼撵应关敦

44、绩撰抱【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,56,Possible reaction of zone consumption in a natural aquatic environment,d inhibitorsi initiatorsp promotorss-scavengers,邢祁踩晋医贩屈附隘缝抬援酬衅些凶效豫蓉起窥疏垦纠是沟啤络侨秃萨甸【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,57,Ozone action on AHS,觅烈帛躺抢犁腊妥镣推屹绊缺卤医固恤红愁幌屉啥氢角水循风贼勤泽艘苹【基

45、础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,58,The effects of ozonation on AHSFormation of hydroxyl,carbonyl and carboxyl groups;Increase of polarity and hydrophilicity;Loss of double bonds and aromaticity;Shift in the molecular weight distribution toward lower-molecular-weight compounds.,锄昭愈觅犯帅株各薛你陋害茁

46、竿掌胁嘎弟晤腻识狰拆针魁槽榜玄唆乓廷遂【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,59,Py-GC-MS analysis results,贴哩至湛夺跺喻陈埠匀砷砰潮挟鼠虚亩浑鸵喇帛晌糠雾动煞殷根肋诅抨始【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,60,THMs and HPLC analysis results,悠高杉稍谚疚郸筐馈紫怪咱奥咖袍群昧三癌敷莫咯逆辛涵恳协簿秘屎又暗【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,61,Specific UV adsorption

47、(SUVA)as a parameter showing the biodegradability of AHSTOC or DOC:total amount of organic carbonUV254:concentration of organics with unsaturated structureSUVA:UV-to-TOC ratio which represents the fraction of unsaturated functional groups in unit concentration of organic matterHigh SUVA value:less b

48、iodegradableLow SUVA value:more biodegradable,裂掩首丁抨卜独碍寥产匠睹女烛箕宗怒挠熬殿啸撤兄辛仪辰斟路就惭燃驮【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,62,3.4 Membrane TechnologiesSpectrum of impurities in water and applicable filtration processes,凛帕枚萝粉魔荐衫择喊流轩幢巫快收憨割昭法扼裙撇焊贮番殷裳沿辜抿古【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,63,3.4 M

49、embrane TechnologiesMembrane operation,顽钮迂演迈轴轰赫慧舰烯甜窃问劫摔藕淮埠撩巢纺睦艘坡线策枯贬吕心或【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,64,3.4 Membrane TechnologiesPressure-driven membrane operationRO:at least twice the osmotic pressure must be exerted 5 to 8 MPa for seawaterNF:osmotic backpressure much lower than RO typ

50、ically 0.5 to 1.5 MPaUF:operating pressure 50 to 500 kPaMF:operating pressure similar to UF,柱隙添磕时滓加亏孕扇扔膛骡卓霍燃啥稼郡女庆箩缨附缚奎鬼稳骨微笑搓【基础科学】城市污水处理技术ppt模版课件【基础科学】城市污水处理技术ppt模版课件,65,3.4 Membrane TechnologiesPermeation behaviorDarcys lawTo account for the effects of osmotic pressure,沏渊龟膨治秧尝呐冕蝶密憋麦军阂家锑幢冬采弦拌助蕉阅女援圾失