三维电催化氧化耦合活性污泥法处理高浓含氟有机废水的研究  

Treatment of High Fluorine Organic Wastewater by Combination of Three-dimensional Electrode Oxidation and Activated Sludge Process

作　　者：林金钩 陈燕贵 吕碧洪[3] Lin Jingou;Chen Yangui;Lv Bihong(The Environmental Monitoring Central Station of Fujian Province Xiamen City,Fujian,361000;Xiamen Cleaner Environmental Protection Technology Co.,Ltd.,Fujian,361021;College of Materials and Engineering,Huaqiao University,Fujian,361021)

机构地区：[1]福建省厦门环境监测中心站,福建361000 [2]厦门科林尔环保科技有限公司,福建361021 [3]华侨大学化工学院,福建361000

出　　处：《当代化工研究》2023年第11期106-108,共3页Modern Chemical Research

基　　金：2022年福建省环保科技计划项目“九龙江流域农用土壤常见除草剂污染调查与生物治理对策研究”(项目编号:2022R012);厦门市青年创新基金,二氧化碳相变吸收剂的再生机理及调控机制(项目编号:3502Z20206006)。

摘　　要：本文以石墨为阳极,钢板为阴极,二氧化锰改性活性炭催化剂为第三电极,进行三维电催化氧化预处理后,耦合活性污泥法强化去除高浓度含氟有机废水。考察了初始pH,活性炭催化剂用量、曝气量、电流密度等对氟离子、氨氮、COD去除效果的影响;确定最佳条件后,考察了三维电催化氧化耦合活性污泥法处理该有机废水的效果。结果表明,在初始pH值为7,活性炭催化剂占总反应槽40%、曝气量为3L/min,电化学氧化反应4h后,三维电催化氧化处理效果最佳。废水经过活性污泥法好氧曝气24h后,含氟废水的COD值由30000mg/L降低至19000mg/L左右,但在持续曝气中易出现发泡发臭的现象;而三维电催化预处理氧化60min后即可将废水COD从34160mg/L降至11000mg/L左右,经过活性污泥好氧曝气24h后COD低于500mg/L,实现园区纳管排放标准。In this paper,graphite as the anode,steel plate as the cathode,and manganese dioxide modified activated carbon catalyst as the third electrode were used for three-dimensional electrocatalytic oxidation pretreatment followed by coupled activated sludge method to enhance the removal of high concentration fluorine-containing organic wastewater.The effects of initial pH,activated carbon catalyst dosage,aeration volume and current density on the removal effects of fluoride ions,ammonia nitrogen and COD were investigated.And after determining the optimal conditions,the effect of three-dimensional electrocatalytic oxidation coupled with activated sludge method on the treatment of this organic wastewater was examined.The results showed that the best effect of three-dimensional electrocatalytic oxidation treatment was achieved after the initial pH value of 7,activated carbon catalyst accounted for 40%of the total reaction tank,aeration volume of 3 L/min and electrochemical oxidation reaction for 4 h.The COD of fluorinated wastewater was reduced from 30,000 mg/L to about 19,000 mg/L after 24 h of aerobic aeration by activated sludge method,but the phenomenon of foaming and odor was easy to occur in the continuous aeration,while the COD of wastewater could be reduced from 34,160 mg/L to about 11,000 mg/L after 60 min of three-dimensional electrocatalytic pretreatment oxidation,and the COD was lower than 500 mg/L after 24 h of aerobic aeration by activated sludge,which can achieve the discharge standard of the park.

关 键 词：化工废水 电催化氧化 活性污泥法 COD 

分 类 号：X322[环境科学与工程—环境工程]