铁炭微电解深度处理废纸造纸废水的参数优化及其效果研究  

Study on optimization of parameters and effect of iron charcoal microelectrolysis in the deep treatment of waste paperand paper wastewater

作　　者：王先宝 张敏婷 冉家荣 张嘉禄 李享 张安龙 WANG Xian-bao;ZHANG Min-ting;RAN Jia-rong;ZHANG Jia-lu;LI Xiang;ZHANG An-long(School of Environmental Science and Engineering,Shaanxi University of Science&Technology,Xi′an 710021,China)

机构地区：[1]陕西科技大学环境科学与工程学院,陕西西安710021

出　　处：《陕西科技大学学报》2024年第2期34-40,52,共8页Journal of Shaanxi University of Science & Technology

基　　金：国家自然科学基金项目(52000126);陕西省科技厅重点研发计划项目(2022SF-234);陕西省咸阳市重点研发技术项目(L2022ZDYFSF049)。

摘　　要：利用铁炭微电解技术对废纸造纸废水进行深度处理,根据单因素实验确定反应最佳参数条件,结合实验结果利用响应面实验对工艺参数进行优化,并在最优条件下通过三维荧光光谱、GC-MS对废水水质进行分析.结果表明:铁炭微电解工艺的最佳处理条件为初始pH=3.0、填料添加量255 g·L^(-1)、反应时间120 min、曝气量0.9 L·min^(-1),在此条件下COD去除率为32.14%;响应面实验分析得到最佳工艺条件下计算的COD去除率最大预测值为34.57%,与实验结果基本一致;三维荧光分析结果表明铁炭微电解工艺对废纸造纸废水中腐殖酸类物质降解效果显著,GC-MS分析表明,经铁炭微电解处理,废水中二十烷的相对含量从原水的43.31%降低至4.79%,但同时会伴随有少量新污染物的产生.Utilizing the iron-carbon microelectrolysis technology to carry out in-depth treatment of waste paper and pulp wastewater,the optimal process parameters were determined based on single factor experiments.In addition,the response surface methodology was employed to optimize the process parameters by analyzing the experimental results.Under the optimized conditions,the excitation-emission-matrix spectra and GC-MS were used to analyze the water quality of the treated wastewater.The results showed that the optimal treatment conditions of iron-carbon microelectrolysis process were initial pH=3.0,filler addition amount 255 g·L^(-1),reaction time 120 min,aeration amount 0.9 L·min^(-1),and the COD removal efficiency was 32.14%under these conditions;the maximum predicted value of COD removal rate calculated under the optimal process conditions was 34.57%from the response surface analysis,which was basically consistent with the experimental results.The results of excitation-emission-matrix spectra analysis showed that the iron-carbon microelectrolysis process was effective in degrading humic acid and fulvic acid in waste paper and paper wastewater,and GC-MS analysis showed that the relative content of eicosanoids in wastewater was reduced from 43.31%to 4.79%of the original water after the iron-carbon microelectrolysis treatment,but a small amount of new pollutants were generated at the same time.

关 键 词：铁炭微电解 废纸造纸废水 深度处理 响应面分析 有机物污染物 

分 类 号：X793[环境科学与工程—环境工程]