臭氧多相催化氧化处理微污染水中试研究

通过中试系统初步比较了非均相催化剂催化臭氧化与传统中间臭氧化在饮用水深度处理中的净化效能.结果表明,对有机物污染宏观指标CODMn、TOC的控制,催化臭氧化具有明显优势,降低了后续处理工艺的有机物负荷;催化臭氧化与中间臭氧化对UV254的去除率相当;催化剂能够强化臭氧氧化,使其进一步去除水中持久性有毒有害有机物,并且显著地提高了臭氧氧化氨氮生成硝酸盐氮的能力,催化剂也强化了臭氧的传质与利用.

Pilot study on heterogeneous catalyzed oxidation for micro-polluted drinking water treatment

A comparative pilot study of ozonation and ozone catalytic oxidation in the presnece of a novel catalyst was conducted for purification of polluted water. It was demonstrated that both ozonation and catalytic ozonation could remove UV_ 254 to the similar extent. However, catalytic ozonation has obvious advantage over the conventional ozonation in controlling COD_ Mn and TOC so as to reduce the quantity of organic compounds to transfer into the next treatment process. The catalyst could both strengthen ozonation to degrade some stable micro-organic pollutants and convert NH _ 4 -N to NO-_ 3 -N as well as enhance the mass transfer rate of ozone into water.