复合脱氮剂吹脱法处理高浓度氨氮废水试验研究

复合脱氮剂复合脱氮剂-吹脱法处理高浓度氨氮废水试验研究吹脱法处理高浓度氨氮废水试验研究雷春生,马建锋,李定龙,张文艺,关小红and马军Citation:科学通报54,3565(2009);doi:10.1360/csb2009-54-22-3565Viewonline::《中国科学》杂志社Articlesyoumaybeinterestedin式电催化氧化处理高浓度有机废水ChineseScienceBulletin52,1088(2007);Treatinglow-nitrogenouswastewaterbycouplinganammoxwithpartialdenitrificationChineseJournalofEnvironmentalEngineering12,1888(2018);烟气同时脱硫脱氮的高活性吸收剂的表征及脱除机理研究ScienceinChinaSeriesE-TechnologicalSciences(inChinese)36,326(2006);Combinationprocessofcoagulation-heattreatmentandMAPfortreatmentofhighconcentrationwater-basedinkprintingwastewaterChineseJournalofEnvironmentalEngineering12,1471(2018);三元复合驱化学剂浓度变化的实验研究ScienceinChinaSeriesE-TechnologicalSciences(inChinese)39,1159(2009);2009年第54卷第22期:3565~3569:3565~3569LeiCS,MaJF,LiDL,etal.Compositedenitrificationreagentforhighconcentrationammoniaremovalbyairstripping.ChineseSciBull,doi:10.1007/s11434-009-0587-3-,*,*,,,,213164;,150009*,E-mail:[e-mail]2009-03-03收稿,2009-07-27接受国家水体污染控制与治理科技重大专项资助项目(编号:2008ZX07101-007-01)摘要,,,.,30mg/LpH9~11400mm2.5h(25),21006.0mg/L10.6mg/L,99.95%;45,21006mg/L0.2mg/L,99.999%800~30000mg/L,,15mg/L,,.关键词.,,,[1,2],,400mg/L;,;pH,,,,,,,,,,,,(3000∶1),,,[3~9].,(982mg/L),98.72%[3].,,,85%[4].,,,,,-.11.11,PPR,;1.0m3,DownloadedtoIP:192.168.0.24On:2019-05-0512:53:16年11月第54卷第22期3566图1试验装置及工艺流程示意图1.加碱罐；2.加脱氮剂罐；3.调节池；4.提升泵；5.鼓风机；6.脱氮塔；7.氨气吸收装置；8.尾气排放管采用五级分层结构,每层层高为1.0m,液位水面深度可调控,中间空心为气体通道,在每层塔板上均匀分布穿孔曝气管,整个塔直径为1.2m,高5.0m;氨气吸收装置采用双级逆流吸收,吸收液为稀硫酸,吸收塔尺寸为φ1.0m×4.8m.采用罗兹鼓风机从每层塔板底部通过穿孔管进行曝气,曝气量由带阀门的转子流量计进行控制.废水由管道流进调节池,加入脱氮剂,并用碱调节pH值,必要加热时采用蒸汽加热.充分搅拌后由提升泵注入到脱氮塔顶部,废水由射流器喷出形成水雾状下落到第一层塔板上,同时用穿孔管进行曝气,曝气后废水由内置耐腐泵注入到第二层塔板上空的射流器,废水由射流器喷出形成水雾状下落到第二层塔板上进行曝气,如此进行直至流到塔底,出水即为脱氮废水.吹脱出来的气体由管道进入氨气吸收装置,过量空气排放.1.2,.1,pH8.0~8.5,2NTU,20000mg/L,COD6000mg/L;2,(NH4)2SO4,.pH,()()()()(),1:500.1.3:(GB7479-87);:;pH:ThermoOrion828pH;SS19-WGZ-200COD:LH75B-3CCOD22.12.500L,21006.0mg/L,pH11.0,5,10,15,20,25,30g,1:500,100mm,600∶1,453h,0.6,0.8,0.3,0.5,0.2,0.3mg/L,99.99%,,,(GB18918-2002)A(NH3-N5mg/L),,,.1020304050600.250.500.751.001.251.5099.9099.9299.9499.9699.98100.00剩余氨氮浓度脱氮剂投加量/mg·L1氨氮去除率图2脱氮剂投加量对氨氮去除率的影响2.2pH345,30mg/L,100mm,6001,3hpH.,pH6.57.5,91.17%98.87%pH8.5,99.98%,pH99.99%OH−pHDownloadedtoIP:192.168.0.24On:2019-05-0512:53:16剩余氨氮浓度pH值氨氮去除率图3pH值对氨氮去除率的影响行试验脱氮前与脱氮后废水中的pH总保持不变2.350mg/L,pH11.045,100mm,600∶1,,.4,,1.01.5h,96%99%;2.5h,99.999%,0.5mg/L.,:32508.0,8217.2,1081.2,172.6,32.60mg/(L·h).,,,,2.5h,,,0.5h,77.4%,2.0h.,2.5h.0.51.01.52.02.53.00100020003000400050007580859095100剩余氨氮浓度剩余氨氮浓度/mg·L1时间/h氨氮去除率氨氮去除率(%)图4时间对氨氮去除率的影响2.4530mg/L,pH11.0,6001,452.5h,.,,,400mm,,5.0mg/L,99.9%,600mm,99.9%99.5%,102.6mg/L.,400mm.剩余氨氮浓度/mg·L1氨氮去除率(%)图5水位深度对氨氮去除率的影响2.55,15,25,35,4555,30mg/LpH11.0400mm60012.5h,,6.,515,剩余氨氮浓度/mg·L1氨氮去除率(%)图6温度对氨氮去除率的影响DownloadedtoIP:192.168.0.24On:2019-05-0512:53:16年11月第54卷第22期3568氮的去除率分别为99.5%和99.6%,废水中剩余氨氮浓度为112.2和86.4mg/L,当温度在常温(25)条件下,氨氮的去除率达到99.9%,剩余氨氮浓度为10.6mg/L,低于《城镇污水处理厂污染物排放标准》GB18918-2002二级标准NH3-N25mg/L,继续升高温度到45以上时废水中剩余氨氮浓度仅为0.2mg/L氨氮去除率达到99.999%以上2.6pH11.0,30mg/L,6001,400mm,,800,1124,5407,12859,21006mg/L29907mg/L6,2.5h,7.05000100001500020000250003000048121620剩余氨氮浓度氨氮去除率不同浓度氨氮废水/mg·L199.099.299.499.699.8100.0图7不同进水氨氮浓度废水对氨氮去除率的影响7,,12mg/L,99.0%.,,.3,,;COD,COD,.pH.pH7.0,(NH4+),pH,(NH3).pH11.0,(NH3)90%.pH11.0,90%[10,11].,pH,90%,,NH4+NH3,NH4+,SDBSNH4+[12],OH−NH3·H2O,NH3H2ONH3H2O[13];NH3H2O,,-,NH3H2O,NH3[14];,NH3,NH3,NH3[15~18].,pH,,pH,,OH−NH4+.60~70,,.,,,,,95%,15mg/L,..,-,,,,[15],30000mg/L0.2mg/L,.,()(),DownloadedtoIP:192.168.0.24On:2019-05-0512:53:16(1),统吹脱法相结合处理高浓度氨氮废水是切实可行的,具有氨氮去除率高,运行费用低,操作简单等特点.(2)-:30mg/L,pH9.0,(25),400mm,2.5h.,99.95%.(3)-,21006mg/L0.2mg/L,99.999%.参考文献1.LukowT,DiekmannH.Aerobicdenitrificationbyanewlyisolatedheter-otrophicbacteriumstrainTL1.BiotechnolLett,1997,11:1157―1159[doi]2.KhinT,AnnachhatreAP.Novelmicrobialnitrogenremovalprocesses.BiotechnolAdv,2004,22:519―532[doi]3.王有乐.超声波吹脱技术处理高浓度氨氮废水试验研究.环境污染治理技术与设备,2001,2:59―634.吴松,凌士平,段吉国.基于复合脱氮剂考察碱性氮脱氮条件与脱氮率.大庆石油学院学报,2007,31:54―575.KominamiH.Selectivephotocatalyticreductionnitratetonitrogenmoleculeinanaqueoussuspensionofmetalloadedtitanium(Ⅳ)oxideparticle.ChemCommun,2005,23:2293―22956.KatoH,KudoA.Photocatalyticreductionofnitrateionsovertantalatephotocatalysts.PhysChemChemPhys,2002,4:2833―2838[doi]7.HamanoiO,KudoA.ReductionofnitrateandnitriteionsoverNi-ZnSphotocatalystundervisiblelightirradiationinthepresenceofasacrificialreagent.ChemLett,2002,8:838―839[doi]8.许国强,曾光明,殷志伟,等.氨氮废水处理技术现状及发展.湖南有色金属,2002,18:29―339.徐永平,陈东辉,徐红秋.膜法处理氯化铵废水的试验研究.工业水处理,2005,25:29―3010.李秀婷,柳丽芬,杨凤林,等.Pt/TiO2光