三维电极法处理医院污水影响因素的分析

目的 分析三维电极法处理医院污水的影响因素。方法 探讨阳极材料、电流密度、水力停留时间、空气流量、极水比等因素对消毒效果的影响，确定在不加化学药剂、不影响水质和低耗能条件下电化学消毒试验的最佳使用条件。结果 在用涂有贵金属（钌、铂、铱）氧化物的钛板作阳极，不锈钢板作阴极，电流密度为6mA/cm^2、水力停留时间为15min、空气流量为40L／h、极水比为1．0的试验条件下，消毒后污水中总大肠菌群数〈500CFU／L。结论 电化学法消毒处理医院污水方法简单有效、运行费用低，无二次污染，处理后的污水达到国家一级排放标准（GB8978—1996）。

Analysis of influencing factors in treating wastewater from hospital by three-dimentional-electrodes method

Objective: To treat wastewater from hospital by electrochemical disinfection method. Methods: The mechanism of electrochemical disinfection was researched by the use of different anode materials. Results: When the titanium coated with noble metal ( Ru,Pt,Ir) oxide was used as anode, stainless steel as cathode, current density at 6mA/ cm2, hydraulic retention time at 15min, air flow rate at 40L/h, and the rate of anode effective area to the inner water volume at 1.0, the amount of total colibacillus was below 500 CFU/L after electrochemical disinfection. Conclusion: The treatment can reach the first class of Effluent Discharge Standard (GB8978 - 98).