草甘膦含甲醛废水的循环利用工艺研究

Investigation of recycling process towards glyphosate wastewater containing formaldehyde

采用连续化湿式催化氧化工艺对草甘膦含甲醛废水进行清洁化处理。优化得到适宜的反应条件:反应温度为90℃,反应时间为5 h,反应压力为0.6 MPa,压缩空气通入量为400 mL/min,催化剂用量为1.0%。在此条件下甲醛的去除率为97.96%,COD的去除率为95.40%。处理后的废水可作为溶剂用于双甘膦氧化制备草甘膦反应,循环使用于草甘膦生产系统。

Continuous wet catalytic oxidation process was used to clean glyphosate wastewater containing formaldehyde.The reaction conditions were optimized as the reaction temperature of 90℃,reaction time of 5 h,the reaction pressure of 0.6 MPa,the amount of compressed air of 400 mL/min,and the amount of catalyst of 1.0 wt%.Under these conditions,the removal rate of formaldehyde was 97.96%,and the removal rate of COD was 95.40%.The treated wastewater can be reused as solvent to the fabrication of glyphosate and recycled in glyphosate production system.