1、 毕毕 业业 设设 计（论计（论 文）文） 题目题目 电化学法处理农村生活污水的性能研究电化学法处理农村生活污水的性能研究 姓姓 名名 系系 （部）（部） 环境工程与化学系环境工程与化学系 专专 业业 环境工程环境工程 I 电化学法处理农村生活污水的性能研究 摘 要 采用电化学法对模拟农村生活污水进行处理，以 IrO2-Pt/Ti 惰性电极为阳极， 考察了电流密度、极板间距和氯离子浓度等因素对氨氮去除效果的影响，结果表 明：在一定的范围内，电流密度越大，氨氮去除率越高，电流密度过大则会造成 能耗损失增加；极板间距适量减小，能够提高氨氮去除率，极板间距过大或者过 小，都会降低氨氮的去除效果；氨氮
2、去除率随氯离子浓度的增加而增大。通过试 验确定的电化学法去除氨氮的最佳工况条件：电流密度为 30mA/cm2，极板间距为 2cm，氯离子质量浓度为 200mg/L。在上述条件下，电解反应 2h，氨氮的浓度从 128mg/L 降至 6.02mg/L，去除率可达到 95.3%，符合 GB18918-2002“生活污水排 放标准”中的一级 B 排放标准。表明采用电化学法对农村生活污水进行处理，可 大大改善污水的性能，具有较大的应用前景。 关键词：电化学法，农村生活污水，影响因素，氨氮 II Study on Treatment of Rural Sewage by Electrochemical M
3、ethod ABSTRACT By using electrochemical method of simulated the rural sewage , as IrO2 - Pt/Ti inert electrode is for anode , investigating the current density, plate spacing, the chloride ion concentration influence factors on the ammonia nitrogen removal effect.The results show that: in a certain
4、range, the greater the current density, the higher the removal rate of ammonia nitrogen. However the excessive current density will cause the increase of energy loss; Plate distance being appropriate reduced can improve the removal rate of ammonia nitrogen, which is too large or too small can reduce
5、 the ammonia nitrogen removal efficiency; Ammonia nitrogen removal rate increases with the increased concentration of chloride ions. Electrochemical removal of ammonia nitrogen condition goes as follows: current density is 30 mA/cm2, plate distance is 2 cm, and chloride ion mass concentration is 200
6、 mg/L. Under the above conditions, when the electrolysis reaction time is 2 h, the concentration of ammonia nitrogen dropped from 128 mg/L to 6.02 mg/L, according with level 1B emission standards in GB18918-2002 “Discharge standard of sewage“, Its removal rate can reach 95.3%. Using electrochemical method for rural domestic sewage treatment greatly improves the performance of the sewage, which has great application prospect. KEY WORDS: Electrochemical method
