摘要
采用催化湿式氧化协同生化深度脱氮、降碳工艺处理甲基硫菌灵废水。实验表明:催化湿式氧化降解效果受催化剂加量、反应温度和反应时间影响较大。在最优反应条件:pH值8、催化剂加量5‰(质量分数)、反应时间1 h、反应温度240℃时,COD最佳去除率为68.5%,氨氮质量占比提升至98.1%,B/C提升至0.55。同时臭氧出水经过蒸发脱盐后,生化协同脱氮、降碳效果明显,处理最终出水COD 210 mg/L,氨氮22 mg/L,硝态氮20 mg/L,总氮42 mg/L,出水稳定满足接管标准。
The catalytic wet oxidation combined with biochemical deep denitrification and carbon reduction process was used to treat thiophanate-methyl wastewater.The experimental results show that the effect of catalytic wet oxidative degradation is greatly affected by the catalyst dosage,reaction temperature and reaction time.Under the optimal reaction conditions:pH=8,catalyst dosage 5‰,reaction time 1 h,and reaction temperature 240℃,the optimal removal rate of COD was 68.5%,the proportion of ammonia nitrogen increased to 98.1%,and B/C increased to 0.55.At the same time,after evaporation and desalination,the effect of biochemical synergistic denitrification and carbon reduction was obvious,and the final effluent was treated with COD 210 mg/L,ammonia nitrogen 22 mg/L,nitrate nitrogen 20 mg/L,and total nitrogen 42 mg/L,and the effluent was stable to meet the takeover standard.
作者
贺正泽
陈洋
罗华勋
王佳欣
巫先坤
HE Zhengze;CHEN Yang;LUO Huaxun;WANG Jiaxin;WU Xiankun(Shaanxi Chemical Research Institute Co.,Ltd.,Xi’an 710054,China;Jiangsu Weiao Environmental Technology Co.,Ltd.,Nanjing 210000,China;School of Chemistry and Chemical Engineering,Nanjing University,Nanjing 210093,China)
出处
《山东化工》
2025年第2期253-256,共4页
Shandong Chemical Industry
关键词
湿式氧化
催化氧化
甲基硫菌灵
脱氮
脱碳
wet oxidation
catalytic oxidation
thiophanate-methyl
denitrification
decarburization
