Influence of Residual Black Liquor in Pulp on Wastewater Pollution after Bleaching Process

Tiantian Chen; Youming Li; Lirong Lei; Mingzhu Hong; Qihui Sun; Yi Hou

doi:10.15376/biores.12.1.2031-2039

BioResources (Feb 2017)

Influence of Residual Black Liquor in Pulp on Wastewater Pollution after Bleaching Process

Tiantian Chen,
Youming Li,
Lirong Lei,
Mingzhu Hong,
Qihui Sun,
Yi Hou

Affiliations

Tiantian Chen: State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China; China
Youming Li: State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China; National Engineering Research Center of Papermaking and Pollution Control, South China University of Technology, Guangzhou 510640, China; China
Lirong Lei: State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China; China
Mingzhu Hong: State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China; China
Qihui Sun: State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China; China
Yi Hou: State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China; National Engineering Research Center of Papermaking and Pollution Control, South China University of Technology, Guangzhou 510640, China; China

DOI: https://doi.org/10.15376/biores.12.1.2031-2039
Journal volume & issue: Vol. 12, no. 1
pp. 2031 – 2039

Abstract

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The influence of residual black liquor in pulp on wastewater pollution after the bleaching process was studied. The results show that the CODCr in bleaching effluent has a remarkable linearity with bleaching loss of pulps without residual black liquor. For pulps with some residual black liquor, more than 34% of the overall CODCr is produced by the residual black liquor. It follows that more effective washing to reduce the residual black liquor is an appropriate way to control the pollutant discharges from pulp and paper mill industry.

Residual black liquor; Bleaching loss; CODCr; Wastewater pollution

Published in BioResources

ISSN: 1930-2126 (Online)
Publisher: North Carolina State University
Country of publisher: United States
LCC subjects: Technology: Chemical technology: Biotechnology
Website: https://bioresources.cnr.ncsu.edu/

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