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Updated: May 23, 2026
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Methods for Facilitating Microbial Growth on Pulp Mill Waste Streams and Characterization of the Biodegradation Potential of Cultured Microbes
Published on: December 12, 2013
[Study on dioxin emission for typical non-wood pulp making in China]
Zhi-Fang Wang1, Qiong Ding, Kai-Xiang Wang
1Foreign Economic Cooperation Office, Ministry of Environmental Protection, Beijing 100035, China. wang.zhifang@mepfeco.org.cn
Huan Jing Ke Xue= Huanjing Kexue
|April 19, 2012
Summary
China
Area of Science:
- Environmental Science
- Chemical Engineering
Context:
- China's pulp and paper industry, particularly non-wood pulping, is a significant source of dioxin emissions.
- The elemental chlorine bleaching process in non-wood pulping contributes to dioxin release.
- Compliance with the Stockholm Convention on Persistent Organic Pollutants is a national priority.
Purpose:
- To identify and quantify dioxin emission levels in various non-wood pulping processes in China.
- To assess the current situation against national wastewater discharge standards.
- To determine the necessity of implementing Best Available Techniques/Best Environmental Practices (BAT/BEP).
Summary:
- Dioxin concentrations in wastewater from bamboo, straw, reed, and bagasse pulping (CEH process) range from 7.46 to 72.7 pg/L, with some near the national standard of 30 pg/L.
- Reduced water consumption in pulp production can lead to exceeding national dioxin discharge limits.
- Emission factors for key non-wood pulping processes were calculated for the first time.
Impact:
- Highlights the urgent need for BAT/BEP adoption in China's non-wood pulp sector.
- Provides crucial data for China to meet its Stockholm Convention obligations.
- Offers valuable reference data for the UNEP Toolkit for emission factor development.
