摘要
针对某生产汽车塑料零件过程中产生的高氟、高COD、难降解、可生化性差的废水,提出微电解-芬顿氧化工艺预处理该废水,降解有机物,提高废水的可生化性.通过单因素实验确定了最佳反应条件:微电解pH值为3~4,反应时间90min,曝气量为1m^3/h,填料投加量为300g/L;芬顿每升原水中投加108mg双氧水,初始pH值为4,反应时间为90min;在最佳条件下进行微电解-芬顿联合工艺运行,出水pH值为5.2,氟离子浓度由4643mg/L降为3664.72mg/L,氟离子去除率为21.07%,COD浓度由15754mg/L降为2357mg/L,COD去除率为85.04%,B/C由0.088升至0.325,可生化性得到提高.
In view of the high fluorine,high COD,refractory and biodegradable wastewater generated in the process of producing automotive plastic parts,this paper proposes microelectrolysis-Fenton oxidation to pretreat the wastewater COD,degrade organic matter and improve the biodegradability of wastewater.The optimal reaction conditions were determined by single factor analysis:microelectrolysis pH value 3~4,reaction time 90min,aeration volume 1m^3/h,filler dosage 300 g/L;fenton per liter of raw water 108mg hydrogen peroxide,the initial pH value is 4,the reaction time is 90min;the micro-electrolysis-Fenton advanced oxidation process is carried out under the optimal conditions,the effluent pH is 5.2,and the fluoride ion concentration is reduced from 4 643 mg/L to 3 664.72 mg./L,the fluoride ion removal rate was 21.07%,the COD concentration was reduced from 15 754 mg/L to 2357 mg/L,the COD removal rate was 85.04%,and the B/C was increased from 0.088 to 0.325,and the biodegradability was improved.
作者
杨震
张德义
杜鑫鸿
施云芬
Yang Zhen;Zhang Deyi;Du Xinhong;Shi Yunfen(School of Chemical Engineering,Northeast Electric Power University,Jilin Jilin 132012)
出处
《东北电力大学学报》
2019年第4期61-67,共7页
Journal of Northeast Electric Power University
基金
国家自然科学基金项目(51409045)
关键词
高浓度含醇废水
微电解
芬顿
可生化性
High concentrations of the cyanide wastewater
Micro-electrolysis
Fenton
Biodegradability
