排序方式: 共有7条查询结果,搜索用时 15 毫秒
1
1.
宁夏灌溉回归水开发再利用的评价 总被引:11,自引:0,他引:11
宁夏灌溉回归水指灌溉农业土壤深层渗滤水、农田尾水、渠道渗漏水、退水及少量的工业废水和城镇生活污水,年排量30~35亿m3。对灌溉回归水20种物质含量的评价表明,它属无毒有害型淡水。采取与渠水(来自黄河水)掺灌或轮灌对作物生长无不良影响,也不会引起土壤盐碱化,可大胆开发利用。 相似文献
2.
With dimethyl phthalate as the model pollutant and Ru/Al(2)O(3) as catalyst, this paper systemically investigates the removal of total organic carbon (TOC) of system. Our results have confirmed that Ru/Al(2)O(3) can significantly increase the effect of ozonation. TOC removal in 120 min can reach 72% while only 24% with ozone alone. The optimal catalyst preparing condition was 0.1 wt% Ru content, 600 degrees C calcination temperature, 0.5-1.0mm particle diameter, which is characterized by a high surface area and a large population of surface active sites. The contrasting experiments of ozone alone, catalyst adsorption after ozonation, and catalytic ozonation confirmed that catalytic reaction was the most important process to TOC removal in system with Ru/Al(2)O(3) as catalyst. 相似文献
3.
Yunrui Zhou Wanpeng Zhu Xun Chen 《Frontiers of Environmental Science & Engineering》2008,2(3):354-357
In this paper, factors influencing the mineralization of dimethyl phthalate (DMP) during catalytic ozonation with a cerium-doped Ru/Al2O3 catalyst were studied. The catalytic contribution was calculated through the results of a comparison experiment. It showed that doping cerium significantly enhanced catalytic activity. The total organic carbon (TOC) removal over the doped catalyst at 100 min reached 75.1%, 61.3% using Ru/Al2O3 catalyst and only 14.0% using ozone alone. Catalytic activity reached the maximum when 0.2% of ruthenium and 1.0% of cerium were simultaneously loaded onto Al2O3 support. Results of experiments on oxidation by ozone alone, adsorption of the catalyst, Ce ion’s and heterogeneous catalytic ozonation confirmed that the contribution of heterogeneous catalytic ozonation was about 50%, which showed the obvious effect of Ru-Ce/Al2O3 on catalytic activity. 相似文献
4.
In this paper, factors influencing the mineralization of dimethyl phthalate (DMP) during catalytic ozonation with a cerium-doped Ru/Al2O3 catalyst were studied. The catalytic contribution was calculated through the results of a comparison experiment. It showed that doping cerium significantly enhanced catalytic activity. The total organic carbon (TOC) removal over the doped catalyst at 100 min reached 75.1%, 61.3% using Ru/Al2O3 catalyst and only 14.0% using ozone alone. Catalytic activity reached the maximum when 0.2% of ruthenium and 1.0% of cerium were simultaneously loaded onto Al2O3 support. Results of experiments on oxidation by ozone alone, adsorption of the catalyst, Ce ion’s and heterogeneous catalytic ozonation confirmed that the contribution of heterogeneous catalytic ozonation was about 50%, which showed the obvious effect of Ru–Ce/Al2O3 on catalytic activity. 相似文献
5.
6.
Yunrui ZHOU Wanpeng ZHU Xun CHEN 《Frontiers of Environmental Science & Engineering in China》2008,2(3):354-357
In this paper, factors influencing the mineralization of dimethyl phthalate (DMP) during catalytic ozonation with a cerium-doped
Ru/Al2O3 catalyst were studied. The catalytic contribution was calculated through the results of a comparison experiment. It showed
that doping cerium significantly enhanced catalytic activity. The total organic carbon (TOC) removal over the doped catalyst
at 100 min reached 75.1%, 61.3% using Ru/Al2O3 catalyst and only 14.0% using ozone alone. Catalytic activity reached the maximum when 0.2% of ruthenium and 1.0% of cerium
were simultaneously loaded onto Al2O3 support. Results of experiments on oxidation by ozone alone, adsorption of the catalyst, Ce ion’s and heterogeneous catalytic
ozonation confirmed that the contribution of heterogeneous catalytic ozonation was about 50%, which showed the obvious effect
of Ru-Ce/Al2O3 on catalytic activity.
__________
Translated from China Environmental Science, 2006, 26(4): 445–448 [译自: 中国环境科学] 相似文献
7.
Wu Yunrui Yang Guijun Xu Lei Yu Ruipeng Huang Xiaofeng Qiu Weijian Guo Yun 《Environmental science and pollution research international》2022,29(25):37791-37803
Environmental Science and Pollution Research - Trace element is one of the important factors affecting the growth of Microcystis. The effects of zinc (0.4 mg/L) and iron (2 mg/L)... 相似文献
1