共查询到15条相似文献,搜索用时 156 毫秒
1.
本文通过分析饮用水深度处理中试工艺各处理单元出水水质指标的变化研究臭氧在臭氧生物活性炭工艺中的作用。试验结果表明:在中试工艺中,臭氧具有很好的氧化、杀藻和消毒的作用;并且两级臭氧氧化分别对常规处理单元和颗粒活性炭去除污染物具有一定的促进作用。 相似文献
2.
文章分析了饮用水消毒的现状 ,提出了保持氯消毒不变 ,用羟基自由基氧化法对饮用水进行后处理 ,去除氯消毒产生的卤代烃 ,以提高饮用水的质量的建议 相似文献
3.
4.
高铁酸盐在水和废水处理中的应用进展 总被引:11,自引:0,他引:11
本文综述了高铁酸盐用于饮用水的消毒、杀菌、除藻,有机废水的氧化混凝,恶臭物质的氧化去除,重金属离子及放射性废水的混凝沉淀,以及色度浊度的去除等领域的最新进展。并对今后的研究进行了展望。 相似文献
5.
城市污水臭氧消毒宏观动力学探索 总被引:1,自引:0,他引:1
消毒是城市污水回用的必要环节。本文以某污水厂出水为研究对象,采用臭氧(O3)作为消毒剂,考查了臭氧在实验水中的溶解和衰减过程,不同通气量和不同pH值条件下臭氧对城市污水厂生化处理后出水中大肠菌群的消毒过程和消毒效果。实验结果显示,臭氧对水中大肠菌群的消毒速度快、消毒效果十分显著;通入水中的气量低于10l/h时,灭菌率随通气量的提高而提高;在水质偏酸性时,有利于臭氧的溶解和提高大肠菌群的去除率;通气量在5l/h—30l/h,处理时间在10min以内时实验条件下臭氧消毒宏观动力学方程为—logS=Kt,式中K=0.2385min^-1—0.4674min^-1。 相似文献
6.
7.
8.
饮用水源的污染以及常规的水处理工艺去除污染的局限性等原因,使库区人民健康正面临日益严重的威胁。结合三峡库区特殊的自然条件和社会经济发展水平,本文分析了库区饮用水安全存在的问题,并提出供水水质安全保障对策,即加强水污染控制,保护水源安全;采用先进、适用的净水技术;控制生活饮用水的二次污染,为库区构建新型的安全饮用水保障体系。 相似文献
9.
10.
11.
12.
13.
14.
The stabilities in water and dry storage of two solid-state disinfectants (3-chloro-4, 4-dimethyl-2-oxazolidinone, agent I, and calcium hypochlorite) have been compared under a variety of conditions. Variables in the study included pH, temperature, and water quality. Agent I is considerably more stable in dry storage and in water, especially at pH 4.5 and 7.0, than is calcium hypochlorite. This is true for solutions of the two compounds in sterile, distilled, deionized, demandfree water or in a synthetic water containing heavy organic load. Prior work in these laboratories concerning use of agent I as a disinfectant for lake water in a laboratory-scale treatment plant had suggested that agent I has considerable potential for use as an alternative to cholorine gas for water disinfection. The present work suggests that agent I is of sufficient stability to be of use as a solid-state disinfectant for swimming pools and for potable water for remote areas. 相似文献
15.
Lawrence K. Wang George G. Peery 《Journal of the American Water Resources Association》1975,11(5):919-932
ABSTRACT: The most common disinfection method is chlorination, however, it has been known that the practice of chlorination for water treatment in the Mississippi River area has caused a significant increase in mortality. The objective of this research was to search for effective disinfectants to replace chlorine. Three cationic surfactants have been tested for their bactericidal properties under various conditions. It has been found that 1 mg of cetyldimethyl-benzylammonium chloride can destroy about 4500 coliforms in one liter water within 10 minutes, under neutral pH conditions and room temperature. Cationic quaternary ammonium compound, therefore, can be a potential candidate disinfectant for replacing chlorine when necessary. 相似文献