超声波技术在焦化废水处理中的应用研究陈振飞

整理文档很辛苦,赏杯茶钱您下走!

免费阅读已结束,点击下载阅读编辑剩下 ...

阅读已结束,您可以下载文档离线阅读编辑

资源描述

3 3  .20116:2010-06-04;:2011-02-17:(1976—),,,,。·控制技术·doi:10.3969/j.issn.1674-6732.2011.03.012,,(,  063000) :,、、pH、、,。,PAHs。:;;;                           :X703        :A       :1674-6732(2011)-03-0048-06ApplicationofUltrasonicTechnologyinCokePlantWastewaterTreatmentCHENZhen-fei,LUGui-jun,LIMao-jing(TangshanEnvironmentalMonitoringCentralstation,Tangshan,Hebei063000,China)ABSTRACT:Amethodforthedecompositionofthepollutantsofcokeplantwastewaterbyultrasonictechnologywasstudied.Thefactorsdominatingthedecompositionefficienciesoftheorganiccompounds,suchastheultrasonicpower,theinitialCODCrconcentrations,theinitialpHvalues,reactiontime,cavitationgasandhydrostaticpressureinreactorwereex-amined.Thebesttechnologyconditionwasobtainedbyorthogonalexperiment,underwhich,thedecompositionefficiencyofPAHswasanalyzed.KEYWORDS:ultrasonictechnology;decomposition;cokeplantwastewater;organiccompounds0 ,,。、、,BOD5CODCr,、、、。,NH3-NCODCr,,、,,,CODCrNH3-N。。2090,,[1,2]。、,,,。,。,,,。,,(COD)、、(PAHs),、、pH、—48—3 3   .20116,,。1 1.1 试验仪器1。QUS2-6520,20kHz,0~600W。1 ,10cm,,,。1.2 试验方法。1。500mL500mL,。pH、,pH,。pH,。60min1,100mL,。1 ρ(COD)/(mg·L-1)ρ()/(mg·L-1)ρ(BOD5)/ρ(COD)pH3465.1488.60.158.891.3 分析方法pH:;COD:;:4-;BOD:;PAHs:。2 2.1 单独使用超声波降解废水中污染物的降解效果及影响因素2.1.1 超声功率对处理效果的影响500mL500mL,10cm,180W,,,60min1,,4h。4500mL,500mL,240,300,360420W。(1)COD2。2,COD。240min,180,240,300,360,420W,COD18.3%,20.6%,28.3%,29.0%,31.0%。2 COD(2)3。3,。240min,180,240,300,360,420W,22.4%,24.4%,33.3%,35.8%,37.4%。3 —49—3 3  .20116(3)ρ(BOD5)/ρ(COD)4。4,ρ(BOD5)/ρ(COD),。240min,180,240,300,360,420W,ρ(BOD5)/ρ(COD)0.15,0.17,0.20,0.23,0.24。4 ρ(BOD5)/ρ(COD)2—4,240~300W,;0~240W300~420W,,[3]。240~300W,,,,。,300W。2.1.2 溶液初始浓度对处理效果的影响、133500mL。300W,,,60min1,4h。(1)COD5。5,COD。COD。240min,3465.1,1715.4,928.2mg/L,COD28.3%,40.7%,53.8%。5 COD(2)6。6,。240min,488.6,245.5,130.0mg/L,33.3%,43.9%,50.9%。6 (3)ρ(BOD5)/ρ(COD)7。7,ρ(BOD5)/ρ(COD)。240min,,ρ(BOD5)/ρ(COD)。COD3465.1,1715.4,928.2mg/L,,ρ(BOD5)/ρ(COD)0.32,0.35,0.36。7 ρ(BOD5)/ρ(COD)5—7,COD,、[4,5]。COD928.2~1715.4mg/L,;COD1715.4~3465.1mg/L,COD,。COD928.2mg/L,COD53.8%。130.0~245.5mg/L,;245.5~488.6mg/L,,。—50—3 3   .20116130.0mg/L,50.3%。,ρ(BOD5)/ρ(COD),0.36。2.1.3 溶液pH值对处理效果的影响1500mL3500mL,、2%pH,300W,,,60min1,4h。(1)pHCOD8。8,pHCOD。COD,COD。240min,pH3.34,8.91,11.30,COD20.8%,28.3%,25.9%。8 pHCOD(2)pH9。9,pH。240min,pH3.34,8.91,11.30,22.3%,33.3%,26.9%。。9 pH(3)pHρ(BOD5)/ρ(COD)10,pHρ(BOD5)/ρ(COD)。240min,ρ(BOD5)/ρ(COD),ρ(BOD5)/ρ(COD)。pH3.34,8.91,11.30,ρ(BOD5)/ρ(COD)0.15,0.17,0.16。10 pHρ(BOD5)/ρ(COD)8—10,pH。[4],(pH=8.91),,COD28.3%33.3%,ρ(BOD5)/ρ(COD)0.150.32。,,。2.1.4 反应时间对处理效果的影响,COD、ρ(BOD5)/ρ(COD),120min,。,CODρ(BOD5)/ρ(COD)。120min,,120min180min。2.2 正交试验2.2.1 试验因素水平,、、pH4,2。2 ABCD/Wρ(COD)/(mg·L-1)ρ()/(mg·L-1)ρ(BOD5)/ρ(COD)pH/min2403465.1488.60.153.34903001715.4245.50.158.91120360928.2130.00.1611.30150 注:浓度为初始质量浓度。—51—3 3  .201162.2.2 试验结果L9(34),ρ(BOD5)/ρ(COD),COD。3。3 ABCDCOD/%/%1111120.136.52122235.244.83133347.845.24212328.333.35223128.038.66231247.248.57313225.928.58321337.242.59332146.549.52.2.3 极差分析COD4。(R),。,;,,。。4 CODABCDABCDK134.424.834.831.539.832.442.240.5K234.533.536.736.140.542.642.940.9K336.547.233.937.842.247.437.441.0R2.122.42.86.32.415.05.50.5  4,(1)COD:R2R4R3R1,,、pH、;(2):R2R3R1R4,,,pH、、。,,2—4A3B3C2D3,360W,COD928.2mg/L、130.0mg/L,pH8.91,150min。,COD51.6%53.0%,ρ(BOD5)/ρ(COD)0.33。2.3 焦化废水中PAHs降解效果的分析,PAHs,、,(POPs),。,,PAHs。,,PAHs。,360W,COD928.2mg/L、130.0mg/L,pH8.91,150min,PAHs,PAHs,5。5 PAHsρ/(μg·L-1)ρ/(μg·L-1)/%PAHs108.747.256.7  5,PAHs,,PAHs56.7%。,。2.4 充入氩气对降解效果的影响3500mL,pH8.91,360W,150min。,,,6。:(1)(Ar),。,,COD51.6%53.0%,ρ(BOD5)/ρ(COD)0.33;,COD70.1%69.6%,ρ(BOD5)/ρ(COD)0.43。—52—3 3   .201166 CODρ/(mg·L-1)/%ρ/(mg·L-1)/%ρ(BOD5)/ρ(COD)928.20130.000.16449.251.668.953.00.33+0(kPa)405.656.355.957.00.370.05(kPa)390.859.954.558.10.380.10(kPa)343.463.053.359.00.380.15(kPa)308.266.847.263.70.400.20(kPa)277.570.139.569.60.43  (2)5,。COD,ρ(BOD5)/ρ(COD)。3 ,、、pH、、,:(1)240~300W,;0~240W300~420W,。(2)COD。(3)pH。(4)CODρ(BOD5)/ρ(COD)。120min,,120min180min。(5):360W,COD928.2mg/L、130.0mg/L,pH8.91,150min。,COD51.6%53.0%,ρ(BOD5)/ρ(COD)0.33。(6)PAHs,,PAHs56.7%。(7),0.20kPa,COD70.1%69.6%,ρ(BOD5)/ρ(COD)0.43。[][1],,.[J].,2002,16(1):93-96.[2]KOTRONAROUA,MILLSG,HOFFMANNMR.Decompositionofparathioninaqueoussolutionbyul-trasonicirradiation[J].EnvironmentalScience&Technology,1992,26(7):1460-1462.[3].-SBR[J].,2004,32(5):47-49.[4].[J].,2004,18(3):344-350.[5].-COD[J].,2003,55():140-142.( )投稿须知为提高编辑部工作效率,缩短稿件审改周期,《环境监控与预警》编辑部在线采编系统现已启用,投稿时,请作者进入《环境监控与预警》编辑部网站()。首先注册用户名,填写相关信息后登陆,按页面提示要求进行投稿及查询。谢谢合作!《环境监控与预警》编辑部—53—

1 / 6
下载文档,编辑使用

©2015-2020 m.777doc.com 三七文档.

备案号:鲁ICP备2024069028号-1 客服联系 QQ:2149211541

×
保存成功