活性炭粒径对O<sub>3</sub>-AC处理有机废水的影响机制

杜明辉; 毕莹莹; 董莉; 王勇; 孙晓明

doi:10.13205/j.hjgc.202204004

活性炭粒径对O₃-AC处理有机废水的影响机制

doi: 10.13205/j.hjgc.202204004

1. 中国环境科学研究院国家环境保护生态工业重点实验室, 北京 100012;
2. 华北理工大学建筑与土木工程学院, 河北唐山 063000

基金项目:

国家水体污染控制与治理科技重大专项(2017ZX07402002)

详细信息

作者简介:
杜明辉(1991-),男,硕士研究生,主要研究方向为水污染控制与废水资源化。425490008@qq.com

通讯作者:
孙晓明(1978-),男,研究员,主要研究方向为水污染控制与废水资源化。sunxm52@126.com

计量
- 文章访问数: 242
- HTML全文浏览量: 43
- PDF下载量: 12
- 被引次数: 0
出版历程
- 收稿日期: 2021-05-08
- 网络出版日期: 2022-07-06

INFLUENCE MECHANISM OF ACTIVATED CARBON PARTICLE SIZE ON O₃-AC TREATMENT OF ORGANIC WASTEWATER

1. Chinese Research Academy of Environmental Sciences State Environmental Protection Key Laboratory of Ecological Industry, Beijing 100012, China;
2. North China University of Architecture and Civil Engineering, Tangshan 063000, China

摘要

摘要: 臭氧-活性炭(O₃-AC)技术可以通过吸附和氧化协同作用去除废水中的污染物,而AC粒径是影响这一过程的关键因素。制备了5种48~1700 μm的不同粒径AC用于苯酚废水的O₃-AC处理,通过吸附和氧化动力学考察了AC粒径对污染物的吸附、氧化以及O₃传质的影响机制。结果表明:在AC粒径<150 μm时,AC表面出现更多微观孔道,吸附和氧化速率较粒径>150 μm的AC分别提高了189%和166%;粒径在48~150 μm的AC在O₃中的传质和分解速率分别达到0.57,0.51 min^-1,显著高于其他大粒径AC;在O₃-AC中加入叔丁醇(TBA)后,40 min内COD去除率降低了20%,O₃的分解作用与催化氧化反应有关;使用48~150 μm粒径的AC连续进行6次O₃-AC实验,COD去除速率均保持在95%以上,具有良好稳定性。
- 臭氧 /
- 活性炭 /
- 粒径 /
- 有机废水 /
- 动力学
Abstract: Ozone-activated carbon (O₃-AC) technology can remove pollutants from wastewater through the synergistic effect of adsorption and oxidation, with the size of the AC particle being the key influencing factor. Five different particle sizes in the range of 48~1700 μm were prepared and used for O₃-AC treatment of phenol wastewater. The mechanisms of AC particle size effects on pollutant adsorption, oxidation and O₃ mass transfer were investigated by adsorption and oxidation kinetics. Experimental results showed that when the particle size of AC was below 150 μm, the exposure of more microscopic pore channels on the surface of AC increased the adsorption and oxidation rates by 189% and 166%, respectively, compared to AC with particle size above 150 μm; the mass transfer and decomposition rates of AC with particle size between 48~150 μm in O₃ reached 0.57 min^-1 and 0.51 min^-1, respectively; after adding tert-butanol (TBA) to O₃-AC, the COD removal rate decreased by 20% within 40 min. The decomposition of O₃ was related to the catalytic oxidation reaction; after six consecutive O₃-AC experiments using 48~150 μm particle size AC, the COD removal rate was maintained at 95% above, showing a good stability.
- ozone /
- activated carbon /
- partical size /
- organic waste water /
- kinetics

HTML全文

参考文献(17)

[1]	李荣,许多,魏杰,等.净水污泥与粉末活性炭复合制备吸附剂去除氨氮研究[J].环境工程, 2020, 38(9):95-100.
[2]	REUNGOAT J, ESCHER B I, MACOVA M, et al. Ozonation and biological activated carbon filtration of wastewater treatment plant effluents[J]. Water Research, 2012, 46:863-872.
[3]	CHEN C M, WEI L Y, GUO X, et al. Investigation of heavy oil refinery wastewater treatment by integrated ozone and activated carbon-supported manganese oxides[J]. Fuel Processing Technology, 2014, 124:165-173.
[4]	DECREY L, BONVIN F, BONVIN C, et al. Removal of trace organic contaminants from wastewater by superfine powdered activated carbon (SPAC) is neither affected by SPAC dispersal nor coagulation[J]. Water Research, 2020, 185:116302.
[5]	刘冰,郑煜铭,陈燕敏,等.臭氧-活性炭处理高浓度制药废水作用机制研究[J].环境科学与技术, 2021, 44(2):122-130.
[6]	孙丽华,史鹏飞,张启伟,等.臭氧联合粉末活性炭与超滤对二级出水中抗性基因的去除效能[J].安全与环境学报, 2020, 20(2):676-682.
[7]	徐俊,邬亦俊,马永恒,等.常规处理-臭氧活性炭-超滤膜净水工艺的工程应用[J].给水排水, 2016, 52(4):18-21.
[8]	NAKAZAWA Y, MATSUI Y, HANAMURA Y, SHINNO, et al. Minimizing residual black particles in sand filtrate when applying superfine powdered activated carbon:coagulants and coagulation conditions[J]. Water Research, 2018,147:311-320.
[9]	HUANG W W, WANG L, ZHOU W Z, et al. Effects of combined ozone and PAC pretreatment on ultrafiltration membrane fouling control and mechanisms[J]. Journal of Membrane Science, 2017, 533:378-389.
[10]	耿健,杨盼,唐婉莹.铁改性热处理凹凸棒颗粒对水体磷的去除效果[J].环境工程, 2020, 38(10):114-119.
[11]	OSCAR R, CAROLINA B, KATHERINE N, et al. Organic micropollutants (OMPs) oxidation by ozone:effect of activated carbon on toxicity abatement,[J]. Science of The Total Environment, 2017, 590/591:430-439.
[12]	刘春,高立涛,张静,等.微气泡臭氧化强化吸收-氧化处理高浓度乙酸乙酯气体[J].环境工程学报, 2021, 15(5):1616-1624.
[13]	ALEJANDRO A E, IRENE S G, PEDRO J V G, et al. Efficacy of atrazine pesticide reduction in aqueous solution using activated carbon, ozone and a combination of both[J]. Science of The Total Environment, 2021, 764:144301.
[14]	ZENKEVICH I G, PUSHKAREVA T I. Chromato-mass spectrometric identification of unusual products of 4-isopropylphenol oxidation in aqueous solutions[J]. Russian Journal of General Chemistry, 2018, 88(1):7-14.
[15]	LI W H, LI L J, CHEN C L, et al. Potential of select intermediate-volatility organic compounds and consumer products for secondary organic aerosol and ozone formation under relevant urban conditions[J]. Atmospheric Environment, 2018, 178(4):109-117.
[16]	李昊,王浩男,任斐鹏,等.二氧化锰纳米微球在电Fenton反应中的应用[J].环境工程, 2020, 38(12):26-31.
[17]	JABESA A, GHOSH P. Removal of dimethyl phthalate from water by ozone microbubbles[J]. Environmental Technology, 2017, 38(13/14/15/16):2093-2103.