電解氧化法降解氨氮廢水之研究

Electrochemical Oxidation of Ammonia Nitrogen Wastewater

張群岳(Chiun-Yue Jang)

指導教授 ： 王文裕

朝陽科技大學/理工學院/環境工程與管理系/碩士(2014年)

摘要

隨著社會的快速發展與進步，人們所排入水體中的含氮污染物種類與數量不斷快速增加，為了防止水體的優養化，對於含氨氮廢水必頇進行有效的處理。本文研究使用石墨板作為電極板，以電化學氧化法，降解水中的氨氮污染物。電解氨氮廢水過程中，無氯離子時，氨氮無降解的效果；而氯離子含量越高，氨氮降解效果越好。電壓的高低，影響氨氮的降解速率。電壓越高，降解速度越快，反應時間也越短；但隨著電壓增高，電能的損耗也越多。將廢水調整不同的pH值，呈現酸性時，氨氮降解很緩慢；高pH鹼性時，有利於氨氮的降解。電極板間距過大或過小，皆會使電阻增大而影響氨氮降解速率。不同的溫度和氨氮濃度，對氨氮的降解速率影響不大。

關鍵字

氨氮 ； 電化學氧化 ； 石墨

並列摘要

With the rapid development of society, the quantities of nitrogen contained pollutants discharged into water bodies increased rapidly. In order to prevent the eutrophication of water bodies, the wastewater containing ammonia nitrogen must be effectively treated. This study explored the degradation of ammonia nitrogen pollutants in water. Graphite plates were used as electrode plates in the electrochemical oxidation method. In the electrolytic process of wastewater, there was no degradation of ammonia nitrogen without the presence of chlorine ions. Degradation efficiency of ammonia nitrogen was improved with the increasing of the concentration of chloride ions. The applied voltage affects the degradation rate of ammonia nitrogen. With a higher voltage the degradation rate of ammonia nitrogen was faster. However, the electric power loss was larger along with the higher voltage. At the acidic wastewater, ammonia nitrogen is degraded slowly. Alkaline wastewater is conducive to the degradation of ammonia nitrogen. Larger or smaller spacing between electric plates would result in the increasing electric resistance and affect the degradation rate of ammonia nitrogen. Different temperatures and concentrations of ammonia nitrogen wastewater do not have signification effect on the degradation rate.

並列關鍵字

Ammonia Nitrogen ； Electrochemical oxidation ； Graphite

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