摘要：
针对江西某聚氨酯公司生产废水甲醛含量高，COD和氨氮浓度高，以及可生化性差的特点，设计采用“预处理-生化反应-深度处理”的组合工艺对其进行处理。其中，预处理通过聚糖反应去除废水中的甲醛，并提高废水的可生化性；生化反应采用A2/O工艺，主要去除废水中的COD和氨氮；生化处理出水采用臭氧催化氧化进行深度处理。工程实际运行结果表明，最终处理出水甲醛≤5 mg/L，COD≤500 mg/L，氨氮≤45 mg/L，出水水质达到园区接管标准。
关键词:
聚氨酯废水,
甲醛,
聚糖反应,
A2/O工艺,
臭氧催化氧化
Abstract:
The wastewater produced by a polyurethane company in Jiangxi has high formaldehyde content, high concentration of COD and ammonia nitrogen, and poor biodegradability. A combination treatment process, pretreatment-biochemical reaction-deep treatment, was designed to treat the wastewater. Among of them, pretreatment by glycan reaction was used to remove formaldehyde from wastewater and improved the biodegradability of wastewater. The biochemical reaction adopted A2/O to reduce COD and ammonia nitrogen. The effluent after biochemical treatment was treated by an ozone catalytic oxidation for advanced treatment. The actual operation results of the project indicated that the final effluent was formaldehyde ≤ 5 mg/L, COD ≤ 500 mg/L and ammonia nitrogen ≤ 45 mg/L, and met the pipeline take-over standard of industrial park.
Key words:
polyurethane wastewater,
formaldehyde,
glycan reaction,
A2/O process,
ozone catalytic oxidation
中图分类号:
沈克军,陈守文,赵选英,程夫苓. 聚糖反应-A2/O-臭氧催化氧化处理聚氨酯废水的研究[J]. 工业水处理, 2021, 41(2): 120-123.
Kejun Shen,Shouwen Chen,Xuanying Zhao,Fuling Cheng. Treating polyurethane wastewater by glycan reaction-A2/O-ozonation process[J]. Industrial Water Treatment, 2021, 41(2): 120-123.