臭氧/电解联合工艺处理焦化浓盐水中有机物的中试研究  

A pilot study on treatment of organic matters in concentrated coking brine by ozone/electrolysis combined process

作　　者：黄兴俊 倪金元 胡君杰 雷成 兰元宵 杨武霖 HUANG Xingjun;NI Jinyuan;HU Junjie;LEI Cheng;LAN Yuanxiao;YANG Wulin(Chengdu SOTEC Technology Co.,Ltd,Chengdu 610000,China;College of Environmental Sciences and Engineering,Peking University,Beijing 100871,China;Tianfu Yongxing Laboratory,Chengdu 610213,China)

机构地区：[1]成都硕特科技股份有限公司,成都610000 [2]北京大学环境科学与工程学院,北京100871 [3]天府永兴实验室,成都610213

出　　处：《工业用水与废水》2025年第2期25-30,44,共7页Industrial Water & Wastewater

基　　金：2023年中央引导地方科技发展项目(2023ZYD0278);国家自然科学基金(52100021)。

摘　　要：采用臭氧/电解联合工艺处理焦化废水反渗透浓盐水,分别考察了最佳臭氧催化氧化条件和最佳电解氧化条件,对比了单独臭氧催化氧化、单独电解氧化及臭氧/电解联合工艺连续运行的处理效果。结果表明:在反应时间为60 min,臭氧投加量为0.12 g/L,最佳pH值为8的条件下,臭氧催化氧化处理效果最佳,COD去除率达到90.65%;在反应时间为40 min,电流密度为400A/m^(2)时,电解氧化效果最佳,COD去除率达到89.72%;盐浓度越高,电解氧化效率越低,建议盐浓度控制在50000 mg/L以内。3种工艺的连续运行效果对比发现,单独臭氧催化氧化或单独电解氧化工艺的出水COD均波动较大,COD的质量浓度难以稳定维持在40 mg/L以下,臭氧/电解联合工艺的COD去除效果最好,出水COD的质量浓度稳定在20 mg/L以下。Using ozone/electrolysis combined process to treat reverse osmosis concentrated brine of coking wastewater,the optimal ozone catalytic oxidation condition and the optimal electrolytic oxidation condition were investigated separately,and the treatment effects by single ozone catalytic oxidation,single electrolytic oxidation and combined ozone/electrolysis under continuous operation were compared.The results showed that,under the condition that the reaction time was 60 min,the ozone dosage was 0.12 g/L,and the pH value was 8,the optimal treatment effect was obtained by ozone catalytic oxidation,the removal rate of COD reached 90.65%.Under the condition that the reaction time was 40 min,the electric current density was 400 A/m^(2),the best treatment effect was gotten by electrolytic oxidation,the removal rate of COD reached 89.72%.As the higher the salt concentration,the lower the electrolytic oxidation efficiency,it is recommended that the salt concentration should be controlled within 50000 mg/L.The comparison of the continuous operation effects of the three processes showed that the COD mass concentrations in the effluent water from single catalytic oxidation or single electrolytic oxidation fluctuated greatly,and it is difficult to maintain it below 40 mg/L.The COD removal effect of the combined ozone/electrolytic process was the best,and the effluent COD mass concentration was stable below 20 mg/L.

关 键 词：焦化废水 反渗透浓盐水 臭氧催化氧化 电解氧化 臭氧投加量 电流密度 

分 类 号：X703.1[环境科学与工程—环境工程]