排序方式: 共有11条查询结果,搜索用时 15 毫秒
1.
过滤式电极消毒作为一种安全、高效的新型消毒技术备受关注,然而目前使用的电极材料比较单一,且稳定性和高效性难以兼备,制约了该技术的设备化发展.本文采用过滤式消毒方式,考察了几种高孔隙率的导电碳纤维毡的消毒效果.结果表明,碳纤维毡电极具有优异的消毒能力,活性碳纤维电极可在几伏的电压下使细菌死亡,与传统电化学消毒相比,电压降低了1~2个数量级.其中A-PCF(聚丙烯腈基活性碳纤维)电极在外接电压2 V,水力停留时间2 s时即可对大肠杆菌菌液实现6.5log的去除.当外接电压≤2 V时,流出物中未检测到氯,pH保持不变,排除了电化学产物的影响.A-PCF可作为过滤式电极消毒的优选电极材料. 相似文献
2.
水消毒处理中膜技术的应用 总被引:5,自引:0,他引:5
徐建英 《环境污染治理技术与设备》2001,2(2):86-90
本文较全面地评述了膜技术在水消毒处理中的应用,包括消毒机理、效果及影响因素,展望了应用前景。 相似文献
3.
4.
5.
Characterization of disinfection byproduct formation potential in 13 source
waters in China 总被引:3,自引:1,他引:2
Junzhi Zhang Jianwei Yu Wei An Juan Liu Yongjing Wang Youjun Chen Jia Tai Min Yang 《环境科学学报(英文版)》2011,23(2):183-188
The formation potential of four trihalomethanes (THMFP) and seven haloacetic acids (HAA7FP) in 13 source waters taken from
four major water basin areas in China was evaluated using the simulated distribution system (SDS) chlorination method. The specific
ultraviolet absorbance (SUVA254: the ratio of UV254 to dissolved organic carbon (DOC)), which ranged between 0.9 and 5.0 L/(mg m),
showed that the organic compounds in di erent source waters exhibited di erent reactivities with chlorine. The HAA7FP of source
waters ranged from 20 to 448 g/L and the THMFP ranged from 29 to 259 g/L. The HAA7FP concentrations were higher than the
THMFP concentrations in all but one of the samples. Therefore, the risks of haloacetic acids (HAAs) should be of concern in some
source waters. TCM (chloroform) and BDCM (bromodichloromethane) were the major THM constituents, while TCAA (trichloroacetic
acid) and DCAA (dichloroacetic acid) were the major HAA species. Br-THM (brominated THM species) were much higher than Br-
HAA (brominated HAA species), and the formation of Br-DBP (Br-THM and Br-HAA) should be of concern when the bromide
concentration is over 100 g/L. 相似文献
6.
随着社会经济的迅速发展,伴随而来的城市污染问题日益严重,其中以城市水资源污染最为突出。城市水污染问题的产生不仅造成了严重的地区性水体污染,甚至水环境污染对于人类的健康也产生了重大威胁。针对城市水污染的整治问题除了依赖于市政水处理消毒技术之外,优化民众的节水与护水意识,从根本上突出水环境保护的重要性,才是实现城市水资源持续发展的关键所在。本文分析了现有的几种市政水消毒技术,并从水资源保护策略方面提出了市政水环境治理的必要性。 相似文献
8.
9.
10.