非均相催化湿式氧化亚甲蓝水溶液的研究

COD为2000 mg/L的亚甲蓝水溶液作为研究对象,用非均相催化湿式氧化技术进行处理,催化剂性能以COD去除率、脱色率以及稳定性来评价.对4种催化剂担体、15种可溶盐活性组分、4种优选铜催化剂的浸渍液浓度进行筛选,并对铜催化剂进行了改性.实验表明,最佳催化剂担体是FSC,活性组分是Cu(NO3)2,并按催化性能对活性组分进行了排序;浸渍液浓度6wt%Cu2 是最佳选择;改性的Cu-Ce/FSC催化剂与Cu/FSC催化剂相比,COD去除率分别为83.9%和84.5%,出水Cu溶出浓度分别为24.1 mg/L和36.1 mg/L,可见改性催化剂与原催化剂的活性相当,但是稳定性却有了大幅度的提高.

Study on methylthionine chloride disposed by non-homogeneous phase CWAO technology

The research object was methylthionine chloride watery solution with the COD value of 2000mg/L,and it was disposed by non-homogeneous phase CWAO technology. Catalyst capability was evaluated with COD removal rates,color removal rates and stability. In these experiments, 4 kinds of catalyst supporters, 15 kinds of dissoluble salts and 4 kinds of soaking solution concentration of copper catalyst were screened, and Cu/FSC catalyst was modified. The experiments indicated that the best supporter was FSC, and catalytic active constituent was Cu(NO₃)₂, furthermore, active constituent was ranked according to catalytic capability. 4 kinds of soaking solution concentration of the excellent Cu catalyst was designed , and the experiments indicated 6wt% Cu²⁺ was the best choice.At last, Cu/FSC catalyst was modified. COD removal rates were 84.5% and 83.9%, for Cu/FSC and Cu-Ce/FSC catalysts, respectively. 36.1mg/L and 24.1mg/L of Cu were found in the treated solution after the decomposition of MB solution by Cu/FSC and Cu-Ce/FSC catalysts, respectively. Cu-Ce/FSC catalyst was thought to have a stabler structure than that of Cu/FSC catalyst.