O_3/UV工艺处理罗丹明B染料废水的研究
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摘要
以超重力旋转填充床(RPB)为反应装置,研究了O_3/UV工艺处理罗丹明B染料废水的效果。考察了旋转填充床转速、液体流量、催化剂P25质量浓度、臭氧质量浓度等因素对脱色率和COD去除率的影响。结果表明,随着旋转填充床转速、液体循环量、催化剂P25质量浓度以及臭氧质量浓度的增加,罗丹明B废水的处理效果增加;当温度为25℃、液体体积为2 L、RPB转速为1 000 r/min、废水pH为4、气体体积流量为150 L/h、液体循环量为30 L/h、臭氧质量浓度为35 mg/L、催化剂P25质量浓度为400 mg/L时,罗丹明B废水经处理20 min后脱色率和COD去除率分别可达100%和40%。
The treatment effect of Rhodamine B dye wastewater by the O_3/UV process is studied in a rotating packed bed( RPB). Influences of RPB rotating speed,liquid circulating flow rate,dosage of P25 catalyst,ozone( O_3)concentration on the decolorization and COD removal efficiency are investigated. Study results show that the treatment effect of Rhodamine B wastewater increases with the increase of RPB rotating speed,liquid circulating flow rate,catalyst P25 dosage and ozone concentration.The decolorization and COD removal efficiency reach 100% and 40%,respectively after the wastewater has been treated for 20 minutes at 25℃,a RPB rotating speed of 1,000 rpm,a liquid flow rate of 30 L·h~(-1),a pH of 4,a gas flow rate of 150 L·h~(-1),an O_3 concentration of 35 mg·L-1 and a catalyst P25 dosage of 400 mg·L-1.
The treatment effect of Rhodamine B dye wastewater by the O_3/UV process is studied in a rotating packed bed( RPB). Influences of RPB rotating speed,liquid circulating flow rate,dosage of P25 catalyst,ozone( O_3)concentration on the decolorization and COD removal efficiency are investigated. Study results show that the treatment effect of Rhodamine B wastewater increases with the increase of RPB rotating speed,liquid circulating flow rate,catalyst P25 dosage and ozone concentration.The decolorization and COD removal efficiency reach 100% and 40%,respectively after the wastewater has been treated for 20 minutes at 25℃,a RPB rotating speed of 1,000 rpm,a liquid flow rate of 30 L·h~(-1),a pH of 4,a gas flow rate of 150 L·h~(-1),an O_3 concentration of 35 mg·L-1 and a catalyst P25 dosage of 400 mg·L-1.
引文
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[2]Feng J.Research progress of dealing dye wastewater with activated carbon adsorption[J].Times Agricultural Machinery,2016,43(4):68-69.
[3]Bai C,Xiong X,Gong W,et al.Removal of rhodamine B by ozonebased advanced oxidation process. Desalination[J]. Desalination,2011,278(1):84-90.
[4]Asghar A,Abdul A A R,Mohd A W D W. Advanced oxidation processes for in-situ production of hydrogen peroxide/hydroxyl radical for textile wastewater treatment:A review[J].Journal of Cleaner Production,2015,87(2):826-838.
[5]邢天辰,田力剑,崔伟松,等.旋转填充床中O3/Fenton工艺处理酸性黄23印染废水的研究[J].北京化工大学学报:自然科学版,2016,43(3):14-19.
[6]Bai X X,Yang Q,Ding J,et al.Research progress of catalytic ozonation process to treat refractory petrochemical wastewater[J].Chemical Industry and Engineering Progress,2016,35(1):263-268.
[7]Zeng Z Q,Zou H K,Li X,et al.Degradation of phenol by ozone in the presence of Fenton reagent in a rotating packed bed[J].Chemical Engineering Journal,2013,229(229):404-411.
[8]Liang G,Jiao W,Liu Y,et al. Treatment of simulated wastewater containing nitrobenzene by RPB-O3/H2O2technology[J]. Chinese Journal of Environmental Engineering,2014,8(12):5099-5104.
[9]Jiao W Z,Qin Y J,Luo S,et al.Simultaneous formation of nanoscale zero-valent iron and degradation of nitrobenzene in wastewater in an impinging stream-rotating packed bed reactor[J]. Chem Eng J,2017,321(1):564-571.
[10]李墨.RPB中O3/Fenton氧化法处理阿莫西林废水的研究[D].北京:北京化工大学,2013.
[11]王丹,单明军,王伟,等.超重力-O3-Fenton氧化法深度处理彩涂废水[J].化工环保,2016,36(5):527-531.
[12]黄兵华,张晓飞,宋磊,等.Ti O2光催化水处理技术综述[J].水处理技术,2014,40(3):11-17.