隔油-共沉淀-Fenton预处理制药废水

采用隔油-共沉淀-Fenton法对含有大量的苯、甲苯、铝及苯甲酮的制药废水进行处理。经隔油处理,COD由147 490.8 mg/L降至139 518.4 mg/L,后通过调节pH值来去除大部分的铝离子,pH=7时效果最佳,COD大约降至10 000 mg/L。Fenton最佳氧化条件为:pH为7,H2O2的投加量为1.6 g/L,H2O2和Fe2+的投加量比为14,反应去除时间为5 h,在此条件下COD降为840 mg/L,去除效率为91.6%;Fenton氧化预处理后废水的可生化性也得到较大提高。

RESEARCH ON PRETREATMENT OF PHARMACEUTICAL WASTEWATER BY SCRAPING GREASE-COMMON PRECIPITATION-FENTON

The scraping grease-common precipitation-Fenton was used to handle pharmaceutical wastewater containing a lot of benzene,toluene,aluminum and benzophenone.COD was down from 147490.8 mg/L to 139518.4 mg/L by the scraping grease.By adjusting the pH,most of the aluminumion was removed.When the pH was 7,the removal effect was the best and COD was dropped to about 10000 mg/L.The best operating conditions determined are as follows: the pH was 7,H_2O_2 dosage was 1.6 g/L,the proportion ofH_2O_2]and Fe~(2+)] was ...