臭氧催化氧化深度处理亚麻生产废水实验研究

对亚麻生产废水生化出水进行了臭氧催化氧化实验研究,研究了不同类型催化剂、催化剂投加量、初始pH以及臭氧溶解段高度对COD去除率的影响,同时研究了催化氧化过程废水B/C的变化。实验表明:γ-Al2O3基催化剂较陶粒催化剂有更好的催化效果,最佳反应条件为:pH 8.2(原水pH),催化剂575 g,反应时间约60 min,臭氧溶解段高度40 cm,COD去除率可达到67.21%,催化氧化反应10 min时废水B/C达到最高值0.25,可联合臭氧催化氧化和生化工艺深度处理亚麻废水以降低处理成本。

Study on Advanced Treatment of Flax Production Wastewaterby Ozone Catalytic Oxidation

The experiment of ozone catalytic oxidation was carried out on the biochemical effluent of flax production wastewater.The effects of different types of catalysts,the catalyst dosage,the initial pH and the height of ozone dissolving section on the removal rate of COD were studied.At the same time,the change of wastewater B/C in the catalytic oxidation process was studied.The results showed thatγ-Al2O3 based catalyst had better catalytic effect than ceramsite catalyst.The best reaction conditions were as follow,pH of 8.2(pH of the water),catalystof 575 g,reaction time of about 60 min,ozone dissolving section height of 40 cm,COD removal rate could reach 67.21%,wastewater B/C reached the highest value of 0.25 in 10 minutes of catalytic oxidation reaction,which could be combined with ozone catalytic oxidation and biochemical process for advanced treatment of flax wastewater to reduce treatment costs.