臭氧氧化-活性炭协同氧化在印染废水预处理中的应用研究

Application of Ozone Oxidation with Activated Carbon Oxidation Process in Pretreatment of Printing and Dyeing Wastewater

本文通过试验研究了臭氧氧化-活性炭协同氧化法在印染废水预处理中的应用。结果表明,当原水CODCr为720 mg/L、BOD5为108mg/L时、色度为220倍时,活性炭装填量20 g/L、臭氧投加量4 g/h,该工艺最佳的反应时间为30 min。在此运行条件下,COD总去除率达到35%,色度去除率达90%,废水的B/C值从最初的0.15提高到0.30,大大提高了废水的可生化性,增强了印染废水的预处理效果。

In this paper, the application of ozone oxidation with activated carbon oxidation process in pretreatment of printing and dyeing wastewater was studied The results showed that when the raw water CODer was 720 mg/L BOD5 was 108 mg/L, and the color was about 220 times, the amount of active carbon was 20 g/L, the dosage of ozone was 4 g/h, and the optimal reaction time was 30 min. In this condition, the total removal rate of COD reached 35 %, the color removal rate was 90 %, the B/C value of the wastewater increased from 0.15 to 0.30, greatly improving the biodegradability of wastewater, enhanced the cffect of pretreatment of dyeing wastewater.