Advanced treatment paper⁃making wastewater by catalytic ozonation

doi:10.19965/j.cnki.iwt.2021-0341

Abstract

Abstract:

The effluent of biochemical tank of the sewage treatment system had the characteristics of high chromaticity and refractory，which was from of a paper⁃making company in Dongguan，Guangdong. The catalytic ozonation process was used for advanced treatment of paper⁃making wastewater. The effects of space velocity，ozone dosage and the molar ratio of ozone/hydrogen peroxide on the removal rate of COD were investigated. Results showed that the optimal conditions：space velocity was 7 h^-1，the dosage of ozone was 70 g/t，and the molar ratio of ozone/hydrogen peroxide was 0.5. Under optimal conditions，the COD of the effluent reach Grade A of GB 18918—2002，providing technical support for the application of catalytic ozonation in paper⁃making wastewater.

Key words: catalytic ozonation, O₃/H₂O₂, paper?making wastewater, advanced treatment

摘要：

广东东莞某一家造纸企业污水处理系统的生化池出水具有色度高、难降解的特点。采用臭氧催化氧化工艺深度处理该废水，探究了空速、臭氧投加量以及O₃、H₂O₂物质的量比对COD去除率的影响。通过试验优选出空速为7 h^-1，臭氧投加量为70 g/t，O₃、H₂O₂物质的量比为0.5时，出水COD满足GB 18918—2002一级A的要求，为臭氧催化氧化在造纸废水中的应用提供技术支撑。

关键词: 臭氧催化氧化, 臭氧/双氧水, 造纸废水, 深度处理

CLC Number:

X703.1

Wancen LIU, Kunming SONG, Yufen ZHANG. Advanced treatment paper⁃making wastewater by catalytic ozonation[J]. Industrial Water Treatment, 2022, 42(1): 154-157.

刘婉岑, 宋堃铭, 张玉芬. 臭氧催化氧化深度处理造纸废水的试验研究[J]. 工业水处理, 2022, 42(1): 154-157.

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URL: https://www.iwt.cn/EN/10.19965/j.cnki.iwt.2021-0341

https://www.iwt.cn/EN/Y2022/V42/I1/154

Figures/Tables 4

References 11

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