臭氧-活性炭工艺在炼化循环排污水处理中的应用

The Application of Ozone Oxidation-Activated Carbon Adsorption Process in Circulating Discharged Wastewater Treatment

针对炼化企业循环排污水中有机污染物浓度不能满足脱盐处理工艺进水水质要求的问题,开展了臭氧氧化-活性炭吸附工艺去除循环排污水中有机污染物的研究。通过对两种处理工艺进行不同组合的实验结果得知:当反应时间控制在最佳值,臭氧氧化和活性炭吸附单独处理循环排污水时,COD去除率分别约为27%和20%,处理效率偏低;当两种工艺组合后,在臭氧浓度为12 mg/L、氧化时间20 min、吸附时间为10 min时,COD去除率则达到52%,组合工艺协同作用效果明显。

The concentration of organic pollutants in circulating discharged wastewater of petrochemical enterprises can not meet the inlet quality requirements of the desalination treatment process,therefore an experiment on ozone oxidation-activated carbon adsorption process for removing organic pollutants in circulating discharged wastewater was conducted.The results showed that when the procedures of ozone oxidation and activated carbon adsorption were used independently,the removal rate of COD was about 25% and 20% respectively,and the treatment efficiency of these two processes was low;while combined together,the removal rate of COD reached 52% with the ozone concentration 12 mg/L,the oxidation time 30min and the adsorption time 10min.The effect of the combined process was notable.