摘要
本文采用超声波强化臭氧技术处理造纸废水,考察了臭氧进气流量、pH值、超声功率和反应时间等因素对COD去除率的影响。实验表明,COD的去除率随着超声功率的增大而增大,而最佳的臭氧进气流量为0.2 m3/h,最佳的pH为8。当进水COD浓度为733.4 mg/L、pH值为8、臭氧进气量0.2 m3/h、US功率100 W,反应时间30 min时,超声波强化臭氧技术的COD去除率为87.3%,而臭氧氧化技术的COD去除率为36.3%,前者比后者高51%,具有明显的优越性。
In this paper, ultrasonic-enhanced ozone technology was adopted to treat papermaking wastewater. The effects of ozone gas flow, pH value, ultrasonic power and reaction time on COD removal rate were investigated. The experiments showed that the COD removal rate increased with the increase of the ultrasonic power, and found the optimum ozone gas flow of 0.2 m3/h and the optimum pH of 8. Under the condition of influent COD concentration of 733.4 mg/L, pH value of 8, ozone gas flow of 0.2 m3/h, the ultrasonic power of 100 W, the COD removal rate reached 87.3% by ultrasonic-enhanced ozone technology, while it was only 36.3% by ozone technology at 30min. The former with obvious advantages is higher 51% than the latter.
出处
《大连大学学报》
2012年第6期59-62,70,共5页
Journal of Dalian University
