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In order to study the applicability of different weighted methods for indexes to evaluate the health status of basin. The base-system of water theory was introduced, which was used to evaluate the health status of Naolihe catchment. The analytic hierarchy process, entropy weighted method and the variation coefficient method were adopted to calculate the weight of indexes in the base-system of water. The analytic hierarchy process belongs to subjective evaluation method and the other two methods belong to objective evaluation method. Two of the three methods above were joined together, which was called a comprehensive method. In this paper, the three single methods and two comprehensive methods were adopted to calculate indexes’ weights of the base-system of water. The case study results showed that the single analytic hierarchy process was better than the other two single methods and the two comprehensive methods were better than the three single methods. In addition, the comprehensive method 1 (the analytic hierarchy process + entropy weighted method) was better than the comprehensive method 2 (the analytic hierarchy process + the variation coefficient method).

Applied nano-ZnFe2O4/TiO2 photocatlytic films are prepared by template sol-gel method on porous haydites. The effects of ZnFe2O4-doping on TiO2 crystallization, sintering temperature, light absorption and photocatalysis are mainly studied, simultaneously, effect of template, amphiphilic block copolymer P(styrene-b-acrylic acid) (PS-b-PAA) on the phtocatalytic activity of ZnFe2O4/TiO2 films are also studied. The results show that right amount of ZnFe2O4-doping reduces TiO2 sintering temperature and particle size, and increases TiO2 absorbency in ultraviolet region, and a right amount of template (PS-b-PAA) forms orient arranged ZnFe2O4/TiO2 films with the high photocatalytic activity and decomposes fully methyl orange in water after light irradiating 2h.