Electrochemical oxidation (ECO) has shown good potential for disinfection of wastewater discharges but has not been tested for stormwater. Due to far lower salinity and chloride levels present in stormwater than in wastewaters, the knowledge so far on the ECO disinfection performance cannot simply be used for stormwater applications. This paper presents the first study on the feasibility of ECO technology for disinfection of pre-treated stormwater. Disinfection performance of E. coli was tested using a dimensional stable anode (DSA) in a series of batch experiments with synthetic stormwater of ‘typical’ chemical and microbial composition. The results showed that effective disinfection could be achieved with very low energy consumption; e.g. the current density of 1.74 mA/cm² achieved total disinfection in 1.3 min, using only 0.018 kWh per ton of stormwater treatment. Chlorination was found to be the key disinfection mechanism, despite the synthetic stormwater containing only 9 mg/L of chloride. Real stormwater collected from three stormwater treatment systems in Melbourne was then used to validate the findings for indigenous microbe species. Disinfection below the detection limit was achieved for stormwater from the two sites where chloride levels were 9 and 200 mg/l, respectively, but not for the third site where stormwater contained only 2 mg/L chloride. Unfortunately, deterioration of the DSA anode was observed after only 8–10 h of its cumulative operation time, very likely due to high voltage that had to be applied to low saline stormwater to achieve the required current density. In conclusion, ECO was found to be a very promising low energy disinfection technology for stormwater, but far more work is needed to optimise the technology for unique stormwater conditions.

电化学氧化（ECO）已显示出对废水排放物进行消毒的良好潜力，但尚未经过雨水测试。由于雨水中的盐度和氯化物含量远低于废水中的盐分和氯化物含量，因此迄今为止有关ECO消毒性能的知识不能简单地用于雨水应用中。本文提出了关于ECO技术用于预处理雨水消毒的可行性的第一项研究。使用尺寸稳定的阳极（DSA）在一系列具有“典型”化学和微生物成分的合成雨水进行的分批实验中，对大肠杆菌的消毒性能进行了测试。结果表明，可以以非常低的能耗实现有效的消毒。例如1.74 mA / cm的电流密度^2个每吨雨水处理仅使用0.018 kWh，在1.3分钟内实现了完全消毒。尽管合成雨水仅含有9 mg / L的氯化物，但氯化仍被认为是关键的消毒机制。然后，从墨尔本的三个雨水处理系统收集到的实际雨水用于验证土著微生物物种的发现。对于氯化物含量分别为9和200 mg / l的两个地点的雨水，都实现了低于检出限的消毒，而对于仅含有2 mg / L氯化物的雨水的第三处，则没有达到消毒极限。不幸的是，仅在DSA阳极累计运行时间8-10小时后才观察到其劣化，这很可能是由于必须将高电压施加到低盐度雨水中才能达到所需的电流密度。综上所述，