水力喷射空气旋流器吹脱处理挥发性有机物废水
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摘要
采用超重力气液传质设备水力喷射空气旋流器(WSA)对乙苯模拟的VOC废水进行吹脱处理,考察了废水初始浓度、进口气速、射流流速、废水温度等因素对处理过程传质效率的影响。结果表明,进口气速越大、废水温度越高,VOC吹脱去除传质效率越高;射流流速加大,VOC的吹脱处理效率先增大后保持不变;废水初始浓度对VOC的吹脱去除效率影响较小。初始浓度为45 mg/L的VOC废水,采用WSA吹脱处理3 min后,VOC的去除率可高达99%以上,气液传质效率是曝气柱等传统设备的2倍以上。
Water-sparged aerocyclone(WSA),a high efficiency supergravity gas-liquid mass transfer equipment,is used to treat with the simulated VOC wastewater of ethylbenzene solution.The effects of VOC initial concentration,inlet gas velocity,jet velocity,wastewater temperature on the air stripping process and mass transfer efficiency are studied.The results show that the removal rate of VOC gets higher with the increase of the inlet gas velocity and wastewater temperature; the removal rate of VOC increases obviously with the increase of jet velocity at first,but then it keeps constant.VOC initial concentration has little effect on the removal rate of VOC.The removal efficiency of VOC can reach as high as 99% when VOC initial concentration is 45 mg·L-1 and the wastewater has been treated by WSA for 3 min.The gas-liquid mass transfer efficiency of WSA is more than double that of the aeration column and other traditional equipment.
Water-sparged aerocyclone(WSA),a high efficiency supergravity gas-liquid mass transfer equipment,is used to treat with the simulated VOC wastewater of ethylbenzene solution.The effects of VOC initial concentration,inlet gas velocity,jet velocity,wastewater temperature on the air stripping process and mass transfer efficiency are studied.The results show that the removal rate of VOC gets higher with the increase of the inlet gas velocity and wastewater temperature; the removal rate of VOC increases obviously with the increase of jet velocity at first,but then it keeps constant.VOC initial concentration has little effect on the removal rate of VOC.The removal efficiency of VOC can reach as high as 99% when VOC initial concentration is 45 mg·L-1 and the wastewater has been treated by WSA for 3 min.The gas-liquid mass transfer efficiency of WSA is more than double that of the aeration column and other traditional equipment.
引文
[1]Huang Binbin,Lei Chao,Wei Chaohai,et al.Chlorinated volatile organic compounds(Cl-VOCs)in environment—sources,potential human health impacts,and current remediation technologies[J].Environment International,2014,71:118-138.
[2]郭斌,律国黎,任爱玲,等.维生素C工业废水处理系统VOCs污染特性[J].环境科学,2013,34(12):4654-4660.
[3]Shin H,Mckone T E,Bennett D H.Volatilization of low vapor pressure e volatile organic compounds(LVPeVOCs)during three cleaning products-associated activities:Potential contributions to ozone formation[J].Chemosphere,2016,153:130-137.
[4]王玉芬,张肇铭,胡筱敏.SBR处理模拟氯苯废水[J].环境工程学报,2013,50(7):1709-1716.
[5]Priya V S,Philip L. Treatment of volatile organic compounds in pharmaceutical wastewater using submerged aerated biological filter[J].Chemical Engineering Journal,2015,266:309-319.
[6]李朝宇,张潇,吕佳佳,等.石墨烯/SiO2气溶胶对苯、甲苯水溶液的吸附[J].中国环境科学,2017,37(3):972-979.
[7]张璇,廖银念,罗云,等.花状氧化铜催化降解甲苯的性能研究[J].环境科学与技术,2017,40(8):30-35.
[8]Eberle D,Ball R,Boving T B. Peroxone activated persulfate treatment of 1,4-dioxane in the presence of chlorinated solvent cocontaminants[J].Chemosphere,2016,144:728-735.
[9]Kambhu A,Gren M,Tang W,et al.Remediating 1,4-dioxane-contaminated water with slow-release persulfate and zerovalent iron[J].Chemosphere,2017,175:170-177.
[10]Viladomat F G,Souchon I,Athès V,et al.Membrane air-stripping of aroma compounds[J]. Journal of Membrane Science,2006,277:129-136.
[11]吴方同,苏秋霞,吴淑娟.空气吹脱法去除饮用水中的三卤甲烷[J].给水排水,2009,35(12):26-30.
[12]张伟.曝气吹脱去除水源水中挥发性有机物的应急处理技术研究[D].北京:清华大学,2011.
[13]Feng C,Khulbe K C,Tabe S.Volatile organic compound removal by membrane gas stripping using Electro-spun nanofiber membrane[J].Desalination,2012,287:98-102.
[14]Ayyildiz O,Anderson P R,Peters R W. Laboratory batch experiments of the combined effects of ultrasound and air stripping in removing CCl4and 1,1,1-TCA from water[J]. Journal of Hazardous Materials,2005,120:149-156.
[15]Libralato G,Ghirardini A V,AvezzùF.Evaporation and air-stripping to assess and reduce ethanolamines toxicity in oily wastewater[J].Journal of Hazardous Materials,2008,153(3):928-936.
[16]刘有智.超重力化工过程与技术[M].北京:国防工业出版社,2010.
[17]Quan Xuejun,Wang Fuping,Zhao Qinghua,et al. Air stripping of ammonia in a water-sparged aerocyclone reactor[J].Journal of Hazardous Materials,2009,170(2/3):983-988.
[18]程治良,全学军,代黎,等.水力喷射空气旋流器喷孔分布优化[J].化工学报,2013,64(9):3182-3188.
[19]徐飞,罗丹,全学军,等.底部挡板与进气位置对水力喷射空气旋流器传质性能的影响[J].化工进展,2015,34(11):3864-3868.
[20]赵清华,全学军,程治良,等.水力喷射-空气旋流器中气液传质特性及其机理[J].化工学报,2013,64(10):3653-3657.
[21]Joanna K,Sophie C,Wojciech K.Highly hydrophobic ceramic membranes applied to the removal of volatile organic compounds in pervaporation[J].Chemical Engineering Journal,2015,260:43-54.
[22]程治良,全学军,晏云鹏,等.水力喷射空气旋流器中射流流型及其对传质面积和气相压降的影响[J].化工学报,2014,65(8):2914-2920.
[23]赵清华,全学军,项锦欣,等.水力喷射空气旋流器的气相压降特性[J].化工学报,2011,62(9):7-11.
[24]汪艳.曝气吹脱技术去除水源水氯苯的初步研究[D].哈尔滨:哈尔滨工业大学,2011.
[2]郭斌,律国黎,任爱玲,等.维生素C工业废水处理系统VOCs污染特性[J].环境科学,2013,34(12):4654-4660.
[3]Shin H,Mckone T E,Bennett D H.Volatilization of low vapor pressure e volatile organic compounds(LVPeVOCs)during three cleaning products-associated activities:Potential contributions to ozone formation[J].Chemosphere,2016,153:130-137.
[4]王玉芬,张肇铭,胡筱敏.SBR处理模拟氯苯废水[J].环境工程学报,2013,50(7):1709-1716.
[5]Priya V S,Philip L. Treatment of volatile organic compounds in pharmaceutical wastewater using submerged aerated biological filter[J].Chemical Engineering Journal,2015,266:309-319.
[6]李朝宇,张潇,吕佳佳,等.石墨烯/SiO2气溶胶对苯、甲苯水溶液的吸附[J].中国环境科学,2017,37(3):972-979.
[7]张璇,廖银念,罗云,等.花状氧化铜催化降解甲苯的性能研究[J].环境科学与技术,2017,40(8):30-35.
[8]Eberle D,Ball R,Boving T B. Peroxone activated persulfate treatment of 1,4-dioxane in the presence of chlorinated solvent cocontaminants[J].Chemosphere,2016,144:728-735.
[9]Kambhu A,Gren M,Tang W,et al.Remediating 1,4-dioxane-contaminated water with slow-release persulfate and zerovalent iron[J].Chemosphere,2017,175:170-177.
[10]Viladomat F G,Souchon I,Athès V,et al.Membrane air-stripping of aroma compounds[J]. Journal of Membrane Science,2006,277:129-136.
[11]吴方同,苏秋霞,吴淑娟.空气吹脱法去除饮用水中的三卤甲烷[J].给水排水,2009,35(12):26-30.
[12]张伟.曝气吹脱去除水源水中挥发性有机物的应急处理技术研究[D].北京:清华大学,2011.
[13]Feng C,Khulbe K C,Tabe S.Volatile organic compound removal by membrane gas stripping using Electro-spun nanofiber membrane[J].Desalination,2012,287:98-102.
[14]Ayyildiz O,Anderson P R,Peters R W. Laboratory batch experiments of the combined effects of ultrasound and air stripping in removing CCl4and 1,1,1-TCA from water[J]. Journal of Hazardous Materials,2005,120:149-156.
[15]Libralato G,Ghirardini A V,AvezzùF.Evaporation and air-stripping to assess and reduce ethanolamines toxicity in oily wastewater[J].Journal of Hazardous Materials,2008,153(3):928-936.
[16]刘有智.超重力化工过程与技术[M].北京:国防工业出版社,2010.
[17]Quan Xuejun,Wang Fuping,Zhao Qinghua,et al. Air stripping of ammonia in a water-sparged aerocyclone reactor[J].Journal of Hazardous Materials,2009,170(2/3):983-988.
[18]程治良,全学军,代黎,等.水力喷射空气旋流器喷孔分布优化[J].化工学报,2013,64(9):3182-3188.
[19]徐飞,罗丹,全学军,等.底部挡板与进气位置对水力喷射空气旋流器传质性能的影响[J].化工进展,2015,34(11):3864-3868.
[20]赵清华,全学军,程治良,等.水力喷射-空气旋流器中气液传质特性及其机理[J].化工学报,2013,64(10):3653-3657.
[21]Joanna K,Sophie C,Wojciech K.Highly hydrophobic ceramic membranes applied to the removal of volatile organic compounds in pervaporation[J].Chemical Engineering Journal,2015,260:43-54.
[22]程治良,全学军,晏云鹏,等.水力喷射空气旋流器中射流流型及其对传质面积和气相压降的影响[J].化工学报,2014,65(8):2914-2920.
[23]赵清华,全学军,项锦欣,等.水力喷射空气旋流器的气相压降特性[J].化工学报,2011,62(9):7-11.
[24]汪艳.曝气吹脱技术去除水源水氯苯的初步研究[D].哈尔滨:哈尔滨工业大学,2011.
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