A coagulation-based continuous tubular electrochemical reactor has been designed to treat real carwash wastewater in a flow rate of 100 mL/min. This reactor made of an ordinary iron tube cathode with a commercial aluminum rod anode at the center. Equipment and chemicals needed for this method can be easily and cheaply obtained through non-scientific commercial sources. The one-factor at a time approach was used to investigate the effects of operating variables. Current density, flow rate, electrolysis time and electrode material were selected as independent variables while COD removal was considered as the response function. The experimental results showed that the proposed method can remove 89% of COD from 10 liters of carwash wastewater in a "single-pass" and more than 99% in a "double-pass" through the flow reactor. This reactor has short treatment time, low energy consumption, favorable mass transfer and low ohmic drop and does not need to adjust the pH or add electrolyte additionally to save costs. Also, this approach is resistant to undesirable phenomena such as passivation of the electrode surface, cell polarization, electrode surface fouling and reduction of electrical conductivity that may occur during electrolysis. The treated wastewater can be reused in the carwash industry as well as for irrigated agriculture.

设计了一种基于混凝的连续管式电化学反应器，可以以 100 mL/min 的流速处理真实的洗车废水。该反应器由普通铁管阴极和位于中心的商用铝棒阳极制成。该方法所需的设备和化学品可以通过非科学商业来源轻松且廉价地获得。一次单因素方法用于研究操作变量的影响。选择电流密度、流速、电解时间和电极材料作为自变量，同时将COD去除率视为响应函数。实验结果表明，该方法可通过流动反应器“单程”去除10升洗车废水中89%的COD，“双程”去除99%以上的COD。该反应器处理时间短、能耗低、传质良好、欧姆降小，无需调节pH值或额外添加电解质，节省成本。此外，这种方法可以抵抗电解过程中可能发生的不良现象，例如电极表面钝化、电池极化、电极表面污垢和电导率降低。处理后的废水可重新用于洗车行业以及灌溉农业。