Research on the efficiency and mechanism of the treatment of wastewater from disperse dye production by ozone oxidation

doi:10.11894/iwt.2018-1070

Industrial Water Treatment ›› 2020, Vol. 40 ›› Issue (1): 29-32, 111. doi: 10.11894/iwt.2018-1070

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Research on the efficiency and mechanism of the treatment of wastewater from disperse dye production by ozone oxidation

Zhiqiang Sun¹(),Dong Yuan²,Guangye Han³,Mingyang Jing^1,⁴,Canzhu Gao¹,Rutao Liu^1,²,Qigui Niu^1,*()

1. School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
2. Department of Chemistry and Chemical Engineering, Qilu Normal University, Ji'nan 250013, China
3. Shandong Huantou Environmental Engineering Co., Ltd., Ji'nan 250300, China
4. Penglai Jiaxin Dye Chemical Co., Ltd., Yantai 264000, China

Received:2019-03-08 Online:2020-01-20 Published:2020-01-16
Contact: Qigui Niu E-mail:szq2013ban@163.com;niuqg@sdu.edu.cn
Supported by:
国家自然科学基金项目(21777088);国家自然科学青年基金项目(51608304);山东省科技创新项目(201540306008)

臭氧处理分散染料生产废水的效率与机理研究

孙志强¹(),袁东²,韩广业³,荆明阳^1,⁴,高灿柱¹,刘汝涛^1,²,牛启桂^1,*()

1. 山东大学环境科学与工程学院, 山东青岛 266237
2. 齐鲁师范学院化学与化工学院, 山东济南 250013
3. 山东环投环境工程有限公司, 山东济南 250300
4. 蓬莱嘉信染料化工股份有限公司, 山东烟台 264000

通讯作者: 牛启桂 E-mail:szq2013ban@163.com;niuqg@sdu.edu.cn
作者简介:孙志强(1993-),硕士在读。电话:17862956529, E-mail:szq2013ban@163.com
基金资助:
国家自然科学基金项目(21777088);国家自然科学青年基金项目(51608304);山东省科技创新项目(201540306008)

Abstract

Abstract:

Ozone oxidation method has been used for treating the wastewater from actual disperse dye production. The results of UV-visible absorption spectrum analysis show that the removing rates of aromatic organic substances under alkalineconditions are about 1.23 times of that under acidic conditions. The removing rates of isothiazole organic substances under weak acid conditions are 1.05 times of that under acidic conditions. The ozone oxidation of wastewater under alkaline conditions is dominated by HO· oxidation, by which the removing rates of the characteristic indexes (UV₂₅₄, UV₃₅₀, UV₄₃₅) are 22 times, 7.5 times and 180 times of ozone, respectively, realizing the mineralization of organic substances at the same time. The main organic substances in the wastewater are anilines and benzisothiazoles, and their auxochrome and chromophore are oxidized and shedded to form nitrobenzene, phenol, organic acids, etc.

Key words: ozone oxidation, dye wastewater, degradation pathway

摘要：

采用臭氧氧化处理分散染料实际生产废水，紫外-可见吸收光谱分析表明，碱性条件下芳香族有机物去除率约为酸性条件下的1.23倍，弱酸性条件下苯并异噻唑类有机物去除率为酸性条件下的1.05倍。碱性条件下废水的臭氧氧化以HO·氧化为主，其对特征指标UV₂₅₄、UV₃₅₀、UV₄₃₅的去除速率分别为臭氧的22、7.5、180倍，同时实现有机物结构破坏和矿化。废水中的主要有机物为苯胺类和苯并异噻唑类，其助色基和生色基被氧化脱落，生成硝基苯、苯酚及有机酸等。

关键词: 臭氧氧化, 染料废水, 降解路径

CLC Number:

X703.1

Zhiqiang Sun,Dong Yuan,Guangye Han,Mingyang Jing,Canzhu Gao,Rutao Liu,Qigui Niu. Research on the efficiency and mechanism of the treatment of wastewater from disperse dye production by ozone oxidation[J]. Industrial Water Treatment, 2020, 40(1): 29-32, 111.

孙志强,袁东,韩广业,荆明阳,高灿柱,刘汝涛,牛启桂. 臭氧处理分散染料生产废水的效率与机理研究[J]. 工业水处理, 2020, 40(1): 29-32, 111.

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URL: https://www.iwt.cn/EN/10.11894/iwt.2018-1070

https://www.iwt.cn/EN/Y2020/V40/I1/29

Figures/Tables 5

References 15

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pH	UV₂₅₄去除率/%	UV₃₅₀去除率/%	UV₄₃₅去除率/%
1	46.50	84.25	98.81
5.5	49.60	88.18	98.83
10	57.00	88.00	99.03

pH	UV₂₅₄去除率/%	UV₃₅₀去除率/%	UV₄₃₅去除率/%
1	46.50	84.25	98.81
5.5	49.60	88.18	98.83
10	57.00	88.00	99.03

	吸光度	ω_μ/%	ω_臭氧/%	ω_OH^-/%	K/（L·g^-1）	R²
第一阶段	UV254	48.37	4.17	99.85	-0.002 2	0.925 8
	UV350	28.61			-0.001 5	0.880 1
	UV435	88.26			-0.005 4	0.730 6
第二阶段	UV254	51.63	95.83	0.15	-0.000 1	0.987 1
	UV350	71.39			-0.000 2	0.941 6
	UV435	11.74			-0.000 03	0.577 9

	吸光度	ω_μ/%	ω_臭氧/%	ω_OH^-/%	K/（L·g^-1）	R²
第一阶段	UV254	48.37	4.17	99.85	-0.002 2	0.925 8
	UV350	28.61			-0.001 5	0.880 1
	UV435	88.26			-0.005 4	0.730 6
第二阶段	UV254	51.63	95.83	0.15	-0.000 1	0.987 1
	UV350	71.39			-0.000 2	0.941 6
	UV435	11.74			-0.000 03	0.577 9

臭氧投加量/（g·L^-1）	总氮/（mg·L^-1）	硝氮/（mg·L^-1）	氨氮/（mg·L^-1）	有机氮/（mg·L^-1）
0	511.12	0	22.53	488.60
1	489.43	0	43.86	445.58
2	522.91	0	43.16	479.76
4.5	510.90	54.18	42.41	414.32
9	503.17	70.34	33.77	399.06
18	514.24	106.14	15.28	392.81
36	548.33	138.20	10.44	399.70
72	564.24	125.56	1.00	437.68

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