中国造纸2024，Vol.43Issue(4)：195-200,6.DOI:10.11980/j.issn.0254-508X.2024.04.023
综合法二氧化氯生产系统废水除铬实例
Example of Chromium Removal from Wastewater in a Synthetic Chlorine Dioxide Production System
谢勤 1李丽萍 1崔召锋 1潘世道1
作者信息
- 1. 海南金海浆纸业有限公司,海南儋州,578101
- 折叠
摘要
Abstract
In this paper,a new engineering example for the treatment of chromium-containing waste water in pulp and paper mill as the re-search object,for the intermittent hexavalent chromium(Cr6+)comprehensive treatment system that developed by the comprehensive use of self-produced chemicals and existing equipment,the reasons for the generation of Cr6+wastewater in the chlorine dioxide workshop and the properties of the wastewater were analysized.Based on the effects of different pH value of reaction pool,reaction temperature,reaction time,and sulfur dosage on the reduction effect of Cr6+in wastewater,the optimum reaction conditions of the sulfur dioxide reduction process for removing Cr6+were determined,and the reduction effect of Cr6+was demonstrated in combination with the actual production data.The re-sults showed that the optimum conditions for the effective removal of Cr6+from high concentration chromium-containing wastewater were that pH value of 2～4,reaction temperature of 40～60 ℃,sulfur dosage of 1.4～1.6 times of the theoretical dosage required for the reaction,and reaction time of 40 min.The content of Cr6+in the effluent of wastewater from the three shutdowns of chlorine dioxide workshop was lower than 0.005 mg/L,and the content of total chromium was lower than 0.06 mg/L,which were in line with the requirements in the GB 8978-1996,confirming the effectiveness of the treatment of the intermittent Cr6+comprehensive treatment system.关键词
二氧化氯/二氧化硫还原法/含铬废水/六价铬去除率Key words
chlorine dioxide/sulfur dioxide reduction method/chromium-containing wastewater/removal rate of hexavalent chromium分类
环境科学引用本文复制引用
谢勤,李丽萍,崔召锋,潘世道..综合法二氧化氯生产系统废水除铬实例[J].中国造纸,2024,43(4):195-200,6.
