化工环保2026，Vol.46Issue(2)：207-213,7.DOI:10.3969/j.issn.1006-1878.2026.02.008
O3/H2O2催化氧化—BAF处理煤气化渣淋洗废水
Treatment of leaching wastewater from coal gasification slag using O3/H2O2 catalytic oxidation-BAF process
摘要
Abstract
The leaching wastewater generated from oxalic acid leaching of coal gasification slag was selected as the research object,and an O3/H2O2 catalytic oxidation-biological aerated filter(BAF)coupled process was employed.The effects of initial pH,O3 concentration,catalyst dosage,H2O2 dosage,reaction time,and hydraulic retention time(HRT)on the removal of COD,ammonia nitrogen,and heavy metals in the wastewater were investigated.The experimental results show that under the optimal conditions of pH 7.0,an ozone mass concentration of 50 mg/L,an Al2O3 catalyst dosage of 200 g/L,and an H2O2 dosage of 1.25 mL/L,and a reaction time of 1.0 h,after O3/H2O2 catalytic oxidation treatment,the COD of the wastewater decreases from 164.0 mg/L to 96.0 mg/L,with a removal rate of 41.46%.Subsequently,the effluent from the O3/H2O2 catalytic oxidation process is further treated by the BAF process.At a HRT of 3.0 h,the effluent COD was 17.3 mg/L,the ammonia nitrogen concentration is 0.71 mg/L,and the contents of heavy metals such as As,Zn,Cr,and Hg are significantly reduced,meeting the Class Ⅲ water quality standards specified in GB 3838-2002.关键词
煤气化渣/淋洗废水/深度处理/O3/H2O2/曝气生物滤池Key words
coal gasification slag/leaching wastewater/advanced treatment/O3/H2O2/biological aerated filter分类
资源环境引用本文复制引用
马新青,张昊颖,何丽君,刘东方..O3/H2O2催化氧化—BAF处理煤气化渣淋洗废水[J].化工环保,2026,46(2):207-213,7.基金项目
天津市科技计划项目(24YDLQSN00120) （24YDLQSN00120）
中国中煤能源集团有限公司重点科技项目(2024-TJDT-KYZC-001). （2024-TJDT-KYZC-001）
