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中文摘要：
针对传统城市污水厂工艺出水氨氮和总氮值偏高等问题,采用电化学氧化的方法对低浓度模拟氨氮废水进行了实验研究,分别考察了氨氮初始浓度,电流密度,氯离子浓度对氨氮和总氮的去除效果的影响。结果表明,电流密度5 mA·cm^-2氯离子浓度300 mg·L^-1,氨氮初始浓度20 mg·L^-1时,氨氮与总氮可在短时间内得到去除并达到国家标准。在反应过程中,氨氮与总氮的去除符合准零级反应动力学,该方法用于低浓度废水的脱氮处理具有较好的应用前景。
英文摘要：
Aimed at the problem that the traditional treatment of municipal sewage leads to relatively high effluent ammonia nitrogen and total nitrogen,the study was conducted to use electrochemical oxidation technology on simulated water with low ammonia nitrogen.The effect of initial ammonia concentration,current density and chloride concentration on ammonia removal was investigated.In several minutes,ammonia and total nitrogen could be removed and reach the national standard on the condition of 5.0 mA·cm^-2 current density,300 mg·L^-1 chloride concentration and 20 mg·L^-1 initial ammonia concentration.The result showed that the ammonia removal followed pseudo zero-order kinetics and the electrochemical oxidation technology has wonderful application prospect on ammonia removal treatment of sewage with low ammonia concentration.
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