OCC造纸废水中微细胶黏物及Ca^(2+)协同去除的研究  

Study on the Synergistic Removal of Micro-stickies and Ca^(2+) from OCC Wastewater

作　　者：刘辉 杨晓 付文才 党文豪 王志伟[1,2] LIU Hui;YANG Xiao;FU Wencai;DANG Wenhao;WANG Zhiwei(College of Light Industry and Food Engineering,Guangxi University,Nanning,Guangxi Zhuang Autonomous Region,530004;Guangxi Key Laboratory of Clean Pulp&Papermaking and Pollution Control,Guangxi University,Nanning,Guangxi Zhuang Autonomous Region,530004)

机构地区：[1]广西大学轻工与食品工程学院,广西南宁530004 [2]广西清洁制浆造纸与污染控制重点实验室,广西南宁530004

出　　处：《中国造纸学报》2021年第3期54-60,共7页Transactions of China Pulp and Paper

基　　金：国家自然科学基金(21868004);广西重点研发计划项目(桂科AB19259013)。

摘　　要：废旧箱纸板(OCC)造纸废水回用过程中面临着微细胶黏物沉积和因Ca^(2+)浓度过高引起的厌氧颗粒污泥钙化两大难题。本研究对比评估了电絮凝法、物理法、化学法、生物酶法对模拟OCC造纸废水的处理效果;结果表明,电絮凝法能够更好去除OCC造纸废水中的微细胶黏物和Ca^(2+)。在此基础上研究了电絮凝处理的最佳条件:铝为阳极材料,电流密度、电极间距和反应时间的最佳处理条件分别为115 A/m^(2)、5 cm和60 min。在最佳条件下,经电絮凝处理后得到的絮凝体中,Al^(3+)和Ca^(2+)的相对含量高于对照组,表明电絮凝法能有效去除OCC造纸废水中的微细胶黏物、COD和Ca^(2+),且该方法绿色无污染,符合可持续发展的要求。There are two problems in the reusing process of OCC papermaking wastewater,i.e.,the deposition of micro stickies and the calcification of anaerobic granular sludge caused by high Ca^(2+) concentration.The effects of electrocoagulation,physical,chemical,and biological enzymatic treatments towards OCC papermaking wastewater were compared in this study.The results showed that the electrocoagulation treatment could remove more micro-stickies and Ca^(2+) compared with other methods.The optimal conditions of electrocoagulation treatment were further explored:aluminum used as the anode,the current density,electrode distance,and reaction time were 115 A/m^(2),5 cm,and 60 min,respectively.The relative contents of Al^(3+) and Ca^(2+) in flocs after electrocoagulation treatment(under the optimum conditions)were higher than those in the control group,indicating that the micro-stickies,COD,and Ca^(2+) in OCC wastewater were removed by electrocoagulation effectively,which is a green and non-pollutant process conforming to the requirements of sustainable development.

关 键 词：OCC造纸废水 微细胶黏物 电絮凝 CA^(2+) 絮凝体 

分 类 号：X793[环境科学与工程—环境工程]