臭氧催化氧化含AOX染料废水的效能与风险评估
Efficiency and Environmental Risk Assessment of Catalytic Ozonation in Treating AOX-containing Dye Wastewater
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摘要: 针对染料废水生物处理效率低、容易经氧化处理生成可吸附有机卤素(AOX)使得出水毒性升高等问题，采用臭氧(催化)氧化工艺处理难降解染料废水生物处理出水，考察工艺对染料废水的处理效能，并通过蛋白核小球藻和青海弧菌Q67评估不同工艺出水生物毒性。结果发现，MnOx-GAC/O3/H2O2工艺对总有机碳(TOC)去除效果最佳，去除率可达67.6%，较O3工艺提高了39.8%；向O3和O3/H2O2体系加入MnOx-GAC不利于去除卤代有机物，而向O3和MnOx-GAC/O3体系加入H2O2能增强对卤代有机物去除效果。通过对物质定性分析，发现MnOx-GAC/O3和MnOx-GAC/O3/H2O2工艺对O3体系难以去除的类蛋白物质和小分子代谢产物具有更好的去除效果。尤其以MnOx-GAC/O3/H2O2工艺去除效果最佳，能够去除大部分卤代芳香族化合物，同时有效减少卤代副产物的生成。对自由基进行定量分析，发现添加MnOx-GAC或H2O2均可以增加体系中·OH含量，进而增强氧化能力。此外，添加MnOx-GAC可以提高O-2·自由基含量，但添加H2O2会降低O-2·自由基含量。出水生物毒性分析结果显示只有O3/H2O2和MnOx-GAC/O3/H2O2工艺出水对蛋白核小球藻和青海弧菌Q67生物毒性有所降低。因此，综合考虑污染物去除效果和出水生物毒性变化，MnOx-GAC/O3/H2O2工艺处理染料废水效能最高，并且能够有效降低出水生物毒性，为难降解染料废水的减毒处理提供了解决方案。Abstract: In order to improve the treatment efficiency and safety of dye wastewater, reduce the formation of adsorbable organic halogenates (AOX), catalytic ozonation was used to treat the bio-treated effluent of dye wastewater. Efficiencies of different treatments were analyzed, and biological toxicities of effluents were evaluated by C. pyrenoidosa and V. qinghaiensis sp. -Q67. Results showed that MnOx-GAC/O3/H2O2 process had the best removal effect on TOC (67.6%), which was 39.8% higher than that of O3 process. Adding MnOx-GAC to O3 and O3/H2O2 system could accelerate halogenated organic matter formation, while adding H2O2 to O3 and MnOx-GAC/O3 system could reduce halogenated organic matter formation. Through qualitative analysis of substances, it was found that MnOx-GAC/O3 and MnOx-GAC/O3/H2O2 processes had the best removal effect on dissolved organic matter (DOM). They had a better effect on removing protein-like substances and small molecule metabolites which were hardly removed by O3 system. Moreover, MnOx-GAC/O3/H2O2 process had the best degradation effect on organic matter, which could remove most halogenated aromatic compounds and effectively reduce the formation of halogenated byproducts. Through free radical quantitative analysis, it was found that MnOx-GAC and H2O2 could increase the content of ·OH and enhance system oxidation ability. Moreover, the addition of MnOx-GAC could increase the content of ·O-2 free radical, but the addition of H2O2 would reduce ·O-2 content. Through biological toxicity analysis, it was found that the effluent of O3/H2O2 and MnOx-GAC/O3/H2O2 process had lower biological toxicity to C. pyrenoidosa and V. qinghaiensis sp. -Q67. Therefore, considering the effect of pollutant removal and effluent biotoxicity alteration, MnOx-GAC/O3/H2O2 process was the most efficient way to treat dye wastewater and reduce the effluent toxicity threat.
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Key words:
- dye wastewater /
- AOX /
- MnOx-GAC catalyst /
- catalytic ozonation /
- environmental risk
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鞠雪敏, 罗莉涛, 张鸿涛, 等. 染料行业废水无害化处理技术现状及发展趋势[J]. 科技导报, 2021, 39(17): 45-54 Ju X M, Luo L T, Zhang H T, et al. Current situation and development trend of harmless treatment technology for dye wastewater in fine chemical industry [J]. Science & Technology Review, 2021, 39(17): 45-54 (in Chinese)
任丹, 李碟, 黄昭露, 等. 水热炭化对吸附处理染料废水产生的废活性炭的再生效果[J]. 环境科学研究, 2021, 34(2): 365-371 Ren D, Li D, Huang Z L, et al. Regeneration of spent powdered activated carbon from adsorption of dyestuff wastewater by hydrothermal carbonization [J]. Research of Environmental Sciences, 2021, 34(2): 365-371 (in Chinese)
曾伟. 改性氧化石墨烯材料制备及其对水中亚甲基蓝染料的吸附性能研究[D]. 长沙: 湖南大学, 2017: 1-3 Zeng W. Modified graphene oxide material preparation and its adsorption properties of methylene blue in wastewater [D]. Changsha: Hunan University, 2017: 1 -3 (in Chinese)
El Hassani K, Kalnina D, Turks M, et al. Enhanced degradation of an azo dye by catalytic ozonation over Ni-containing layered double hydroxide nanocatalyst [J]. Separation and Purification Technology, 2019, 210: 764-774 Xie Y W, Xu R, Liu R, et al. Adsorbable organic halogens formed during treatment of Cl--containing wastewater by sulfate and hydroxyl radical-based advanced oxidation processes [J]. Chemical Engineering Journal, 2020, 389: 124457 刘宇程, 杨冰, 李沁蔓, 等. Cl-和pH对高级氧化工艺去除含盐废水中有机物的影响及机理[J]. 环境工程学报, 2021, 15(5): 1487-1499 Liu Y C, Yang B, Li Q M, et al. Effects and mechanism of Cl- and pH on organic matter removal in salt containing wastewater treatment by advanced oxidation processes [J]. Chinese Journal of Environmental Engineering, 2021, 15(5): 1487-1499 (in Chinese)
Fang C L, Xiao D X, Liu W Q, et al. Enhanced AOX accumulation and aquatic toxicity during 2,4,6-trichlorophenol degradation in a Co(Ⅱ)/peroxymonosulfate/Cl- system [J]. Chemosphere, 2016, 144: 2415-2420 Zhou S B, di Paolo C, Wu X D, et al. Optimization of screening-level risk assessment and priority selection of emerging pollutants—The case of pharmaceuticals in European surface waters [J]. Environment International, 2019, 128: 1-10 刘铮, 曹婷, 王璠, 等. 行业全过程水特征污染物和优控污染物清单筛选技术研究及其在常州市纺织染整业的应用[J]. 环境科学研究, 2020, 33(11): 2540-2553 Liu Z, Cao T, Wang F, et al. Screening technology of water characteristic pollutants and priority pollutants list from whole-process of industry and its application in textile dyeing and finishing industry of Changzhou City [J]. Research of Environmental Sciences, 2020, 33(11): 2540-2553 (in Chinese)
张瑛, 王斯扬, 张锡龙, 等. 不同微藻对典型行业废水急性毒性响应的敏感性研究[J]. 生态毒理学报, 2016, 11(3): 92-100 Zhang Y, Wang S Y, Zhang X L, et al. Comparative study on acute toxic effect response of four microalgae to typical industrial wastewaters [J]. Asian Journal of Ecotoxicology, 2016, 11(3): 92-100 (in Chinese)
武毛妮, 葛媛, 朱艳芳. 生活污水的生物毒性检测及成因分析[J]. 环境科学与技术, 2021, 44(3): 130-134 Wu M N, Ge Y, Zhu Y F. Biotoxicity test and cause analysis in domestic wastewater [J]. Environmental Science & Technology, 2021, 44(3): 130-134 (in Chinese)
Magdeburg A, Stalter D, Oehlmann J. Whole effluent toxicity assessment at a wastewater treatment plant upgraded with a full-scale post-ozonation using aquatic key species [J]. Chemosphere, 2012, 88(8): 1008-1014 迟彤彤, 徐冉云, 李菲菲, 等. 酸热氧化修饰合成MnOx/GAC催化臭氧氧化降解邻氯酚[J]. 环境工程, 2021, 39(11): 119-126 Chi T T, Xu R Y, Li F F, et al. Catalytic ozonation of o-chlorophenol with MnOx/GAC synthesized via acid-thermal oxidation modification method [J]. Environmental Engineering, 2021, 39(11): 119-126 (in Chinese)
马梅, 童中华, 王子健, 等. 新型淡水发光菌(Vibrio qinghaiensis sp.—Q67)应用于环境样品毒性测试的初步研究[J]. 环境科学学报, 1998, 18(1): 86-91 Ma M, Tong Z H, Wang Z J, et al. Application of new type of fresh water luminescent bacterium (Vibrio qinghaiensis sp.—Q67) for toxicity bioassay [J]. Acta Scientiae Circumstantiae, 1998, 18(1): 86-91 (in Chinese)
颉亚玮. 杭州湾可吸附有机卤素污染溯源和源减排工艺研究[D]. 北京: 清华大学, 2017: 18 Xie Y W. Source tracing of the adsorbable organic halogens in the Hangzhou Bay and the research on its removal technology [D]. Beijing: Tsinghua University, 2017: 18 (in Chinese) 李磊, 王波, 张苗, 等. O3/H2O2高级氧化技术抑制溴酸盐生成中试[J]. 中国给水排水, 2021, 37(13): 60-64 Li L, Wang B, Zhang M, et al. Pilot test on bromate formation inhibition by O3/H2O2 advanced oxidation technology [J]. China Water & Wastewater, 2021, 37(13): 60-64 (in Chinese)
王执伟, 刘冬梅, 张文娟, 等. 溴酸盐对普通小球藻的生长以及生理特性的影响[J]. 环境科学, 2016, 37(6): 2158-2163 Wang Z W, Liu D M, Zhang W J, et al. Effects of bromate on the growth and physiological characteristics of Chlorella vulgaris [J]. Environmental Science, 2016, 37(6): 2158-2163 (in Chinese)
Chen Y H, Qin L T, Mo L Y, et al. Synergetic effects of novel aromatic brominated and chlorinated disinfection byproducts on Vibrio qinghaiensis sp.-Q67 [J]. Environmental Pollution, 2019, 250: 375-385 -
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