利用多維式不對稱電極之電降解系統處理高濃度有機工業廢水

Application of multi-dimensional electro-degradation system equipped with asymmetric electrodes for the treatment high concentration organic industrial wastewaters

徐培鈞(Pei-jyun Syu)

指導教授 ： 黃武章

國立屏東科技大學/工學院/環境工程與科學系所/碩士(2015年)

https://doi.org/10.6346/NPUST.2015.00091

摘要

化學需氧量(Chemical Oxygen Demand，COD)與氨氮(NH3-N)為工業有機廢水常見之污染物，利用電化學原理加以去除，具有很大的潛力。而純鈦板具有比強度(抗拉強度/密度)高、耐蝕性佳、彈性模數低、耐熱性好、低溫性能佳、生物相容性高、熱傳導係數低、多彩的氧化膜等優點。
本研究利用純鈦板為陽極電極進行有機廢水及氣態氨的降解進行試驗探討鈦板降解之能力。研究結果顯示(1)浸泡酸燒結的化學修飾方法是可以增加鈦板的電降解效果，最為顯著的為電壓10V，浸泡時間為20分鐘磷酸，效果最為顯著。(2) 50cc/min試驗去除氨氣的效果十分的良好，更加肯定通電的純鈦板與氨氣的反應為“吸附”。 (3) 10V不對稱式電降解系統之降解氨氮與COD效果較好，優於不對式電極系統5V、10V及對稱式電極系統，鈦經過陽極氧化後，根據電解電壓的高低將於鈦表面生成不同厚度的氧化膜，不同厚度氧化膜經光線折射，就會產生不同顏色變化。

關鍵字

電化學 ； 純鈦板 ； 化學需氧量 ； 氨氮

並列摘要

COD (Chemical Oxygen Demand) and Ammonia (NH3-N) of organic pollutant removal of organic contaminants from industrial wastewater using an electrochemical method has great potential. Titanium plates are characterized by having specific strength (tensile strength / density), high corrosion resistance, low elastic modulus, good heat resistance, good lowtemperature performance, high biocompatibility, low thermal conductivity, and a colorful oxide film advantage.
In this study, a titanium plate and degradation of organic wastewater and gaseous ammonia as the anode electrode was used to investigate the degradation of titanium. The results showed that sintering of (1) chemical modification methods drenched the titanium plate and increased electrical degradation, with the most significant voltage of 10V, while phosphoric acid drench time of 20 minutes increased its effect, (2) 50cc / min for the removal of ammonia tested effective, though a more positive reaction with ammonia gas powered titanium plate was "absorption" degradation (3) asymmetric 10V electric system of ammonia and COD degradation was more effective than the right electrode system of 5V. After anodizing titanium with 10V symmetric electrode system, the titanium surfaces were based on the level of the electrolysis voltage generation oxide films with different thickness, therefore, different thickness of oxide film by the refraction of light produced a different color change.

並列關鍵字

Electrochemistry ； titanium plate ； chemical oxygendemand ； ammonia

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