Development of bacteria-free-water distribution system using electrochemical sterilization method.

在供水系统和家庭用水过滤装置中，细菌再生是一个麻烦。控制细菌污染和预防微生物污染的主要策略是使用化学消毒剂。需要减少消毒剂副产物形成的替代技术。在这项研究中。进行了电化学灭菌法无细菌配水系统的研制。当在导电涂料电极上施加1.2 V与饱和甘汞电极（SCE）的电位时，附着在电极上的细菌细胞被完全杀死。通过施加负电位，附着的细胞从电极表面移除。在现场实验中，通过施加交变电位，防止了细菌细胞在电极上的积聚和生物膜的形成。采用射频电弧喷涂法制备的新型TiN电极具有电阻低、电化学稳定性好等特点。该电极可作为各种结构表面的电化学防污装置，对环境的威胁很小。

Bacterial regrowth is a nuisance in water distribution systems as well as in domestic water-filtration units. The main strategy for the regulation of bacterial contamination and the prevention of microbial fouling is the use of chemical disinfectants. Alternative technologies for minimizing the formation of disinfectant byproducts are desired. in this study. the development of bacteria-free-water distribution system using electrochemical sterilization method was carried out. When a potential of 1.2 V vs. a saturated calomel electrode (SCE) was applied to the conductive paint electrode, bacterial cells attached on the electrode were completely killed. By applying a negative potential, the attached cells were removed from the surface of the electrode. In a field experiment, accumulation of the bacterial cells and formation of bioflims on the electrode were prevented by application of an alternating potential. The novel TiN electrode formed by radio-frequency arc spraying exhibits low electrical resistance and good electrochemical stability. This type of electrode can be used as an electrochemical antifouling device on various surface of structures and poses little threat to the environment.