方波脉冲电化学处理含酚废水
Research on the process of square wave pulse electrochemical treatment of phenol-containing wastewater
马蓓 1唐晗昱 1卞兆勇1
作者信息
- 1. 北京师范大学水科学研究院,北京,100875
- 折叠
摘要
以绿色低耗去除酚类污染物为目标,开展方波脉冲电化学处理废水中酚类污染物的降解研究,考察方波脉冲体系(电压波形、脉冲占空比、脉冲频率等参数)对酚类污染物的去除率及比能耗的影响规律,提出最佳工艺及实验参数.结果表明,在电化学反应体系中,脉冲电压、电压波形和脉冲占空比对去除率、平均电流效率和比能耗的影响较为显著,而脉冲频率的影响较小.在脉冲电压4V,占空比为50％,脉冲频率为100 Hz的最佳工艺条件下,对苯酚的去除率为62.03％,比能耗为4.84 kWh·kg-1.因此,相比于直流供电模式,方波脉冲供电模式降解苯酚废水的电能利用率更高,能耗更低,选择性更强,为电化学处理废水提供了一种绿色环保的方法.
Abstract
The degradation of phenolic pollutants in wastewater by square wave pulse electrochemical treatment was studied with the goal of green and low consumption removal of phenolic pollutants.The effects of square wave pulse system(voltage waveform,pulse duty cycle,pulse frequency and other parameters)on the removal rate and specific energy consumption of phenolic pollutants were investigated,and the optimum process and experimental parameters were proposed.The results show that the pulse voltage,voltage waveform and pulse duty cycle have significant effects on the removal rate,average current efficiency and specific energy consumption in the electrochemical reaction system,while the pulse frequency has little effect.Under the optimum conditions of pulse voltage 4 V,duty cycle 50％and pulse frequency 100 Hz,the removal rate of phenol was 62.03％,and the specific energy consumption was 4.84 kWh·kg-1.Therefore,compared with the DC power supply mode,the square wave pulse power supply mode has higher power utilization rate,lower energy consumption and stronger selectivity for the degradation of phenol wastewater,which provides a green and environmentally friendly method for electrochemical treatment of wastewater.
关键词
绿色低耗/方波脉冲/电化学氧化/占空比/频率Key words
green low consumption/square wave pulse/electrochemical oxidation/duty cycle/frequency引用本文复制引用
出版年
2024
NETL
NSTL
万方数据