己内酰胺生产过程中产生多种成分复杂、高COD的难降解有机废水,包括氨肟化废水、离子交换废水、硫铵蒸发冷凝废水和废液浓缩废水。采用厌氧/好氧(A/O)、好氧/厌氧/好氧(O/A/O)以及铁碳微电解-O/A/O组合工艺3种处理工艺,分别单独及混合处理己内酰胺生产废水。结果表明,铁碳微电解-O/A/O组合工艺处理效果最佳,氨肟化废水、离子交换废水、硫铵蒸发冷凝废水、废液浓缩废水以及混合废水的COD去除率依次为79.1%、34.5%、71.1%、52.2%和89.3%;其中以混合废水为处理对象时,可使COD由3 327.5 mg/L降至稳定低于500 mg/L;同时铁碳微电解-O/A/O组合工艺对目标污染物己内酰胺的去除效率最高,出水基本不含己内酰胺。 Production of a variety of caprolactam complex composition, high COD refractory organic wastewater, including ammonia oximation wastewater, ion exchange wastewater, ammonium sulfate condensation condensate wastewater and wastewater concentrated wastewater. Three treatment processes, anaerobic / aerobic (A / O), aerobic / anaerobic / aerobic (O / A / O) and iron carbon micro-electrolysis- O / A / Caprolactam production wastewater. The results showed that the iron-carbon micro-electrolysis-O / A / O combination process had the best effect. The COD removal efficiencies of ammonia-oximation wastewater, ion exchange wastewater, ammonium sulfate condensate wastewater, waste concentrated wastewater and mixed wastewater were 79.1% , 34.5%, 71.1%, 52.2% and 89.3%, respectively. When mixed wastewater was treated, COD decreased from 3 327.5 mg / L to less than 500 mg / L. / O combination of the target pollutant caprolactam removal efficiency is highest, the effluent is basically free of caprolactam.