Influence of reaction pressure on treating papermaking black liquor with CWAO method

Author

Zhang Yong-Li ; Wei Chao-hai ; Zhang Xiaoqiang ; Lin Liwen ; Liu Shuming ; Wu Dan ; You Hongjun

Author_Institution

Coll. of Environ. Sci. & Eng., South China Univ. of Technol., Guangzhou, China

Volume

2

fYear

2011

fDate

20-22 May 2011

Firstpage

1217

Lastpage

1219

Abstract

Paper black liquor with the colour five million times and COD concentration 7028 mg/L were researched with CWAO method. The single factor experiment to determine the papermaking black liquor reaction pressure influence on process were done. When the reaction pressure is increased 3.5Mpa by 1.5Mpa, the best decolored rate is up to 46.41% and 61.05% accordingly. the removal rate of COD is up to 40.24% and 62.31%, The same phenomenon also appeared in the PH and turbidity removal rate. The results show that wastewater decolored rate improve with the reaction pressure adding and reaction time extend. The COD removal rate, water turbidity removal rate, pH in different time periods with the increasing with the increasement of reaction pressure, and different degree improvements were displayed.

Keywords

pH; paper making; turbidity; wastewater treatment; COD concentration; COD removal rate; CWAO method; pH; papermaking black liquor; papermaking wastewater; reaction pressure; water turbidity removal rate; Pollution measurement; Temperature measurement; paper black liquor; reaction pressure; removal rate; wet oxidation;

fLanguage

English

Publisher

ieee

Conference_Titel

Materials for Renewable Energy & Environment (ICMREE), 2011 International Conference on

Conference_Location

Shanghai

Print_ISBN

978-1-61284-749-8

Type

conf

DOI

10.1109/ICMREE.2011.5930555

Filename

5930555