臭氧及臭氧-双氧水处理高盐高有机物水热液对比

Comparative Study on the Effect of Ozone and Ozone-Hydrogen Peroxide on Treatment of High Salt and Organic Matter Hydrothermal Solution

以焚烧飞灰与污泥协同水热产生的水热液作为研究对象,分别采用臭氧、臭氧-双氧水对其进行处理,对比研究不同处理条件对水热液的处理效果,分析高含盐量对臭氧、臭氧-双氧水处理水热液的影响。结果表明:与单独臭氧处理相比,臭氧-双氧水处理可显著降低水热液中有机污染物的UV254、3D荧光峰值;臭氧-双氧水协同处理促进了化学需氧量(chemical oxygen demand,COD)和氨氮(NH 4-N)的去除效果,去除率分别提高了15.69%和10.09%。水热液的色度由2000倍显著降低到800倍。水热液相中较高的含盐量一定程度上抑制了臭氧对有机物的降解,双氧水的加入缓解了盐离子的抑制效应。

The hydrothermal solution produced by the co-hydrothermal of incineration fly ash and sludge was taken as the research object.Ozone and ozone-hydrogen peroxide were used to treat the hydrothermal solution,and the treatment effects of different treatment conditions were compared and studied.The effects of high salt content on the treatment of hydrothermal solution with ozone and ozone-hydrogen peroxide were analyzed.The results show that compared with ozone treatment alone,ozone-hydrogen peroxide treatment could significantly reduce the UV254 and 3D fluorescence peaks of organic pollutants in hydrothermal solution.The synergistic treatment of ozone and hydrogen peroxide promoted the removal of COD and ammonia nitrogen,and the removal rates increased by 15.69%and 10.09%,respectively.The chromaticity of the hydrothermal solution was significantly reduced from 2000 to 800 times.The high salt content in the hydrothermal liquid phase inhibited the degradation of organic matter by ozone to a certain extent,and the addition of hydrogen peroxide alleviated the inhibition effect of salt ions.