臺灣博碩士論文加值系統

　　本研究以濕式氧化法（WAO）配合添加不同觸媒之實驗，探討處理鐵氰錯合物水溶液之效能及操作影響。本實驗以K4Fe(CN)6為污染物，配置濃度為100ppm，實驗條件為：壓力為 5MPa, 8MPa，溫度為180℃, 200℃, 220℃, 240℃，實驗添加之觸媒為硫酸銅、二氧化錳、與氧化鋅。本實驗操作因子包括有：溫度、壓力、觸媒、氣體出口流速、及pH。而水質分析項目包括: CN-, NH3-N, COD, NO3-, NO2-, 及pH 。研究結果顯示，溫度是去除氰鹽之重要因子，在5MPa 下，溫度240℃時，100分鐘後其氰鹽的去除率可達99%以上，而在180℃，100分鐘之反應時間去除率亦達91%以上，其他操作因子的影響則不明顯。對於COD的去除率方面，濕式氧化在5MPa下，溫度240℃時，其COD去除率僅達38%左右，但在添加觸媒後以硫酸銅對COD之去除率影響最大，其去除率提昇至75%，而添加二氧化錳為61%，添加氧化為50%左右。比較之下，此三種觸媒效果以硫酸銅最佳，二氧化錳次之，氧化鋅更次之。而壓力提昇至8MPa，240℃時添加硫酸銅其COD去除率則可再提昇至89%。而對水中氨氮而言，WAO處理方法會產大量氨氮，而添加此三種觸媒皆可有效降低水中氨氮。最後進行pH對於水質處理效果之實驗，結果顯示pH 對於COD去除、氰鹽之去除，水中氨氮之去除皆無明顯影響。

　　The experiment accomplished with WAO catalyzed by different catalysts is to research the efficiency and parameters of destroying ferrocyanide. The concentration of ferrocyanide is prepared 100ppm. The parameters are following as: pressure is 5MPa and 8MPa, temperature is 180℃, 200℃, 220℃, and 240℃. Ca talysts are Copper Sulfate, Manganese Dioxide, Zinc Oxide. The parameters cont rolled on this experiment are pressure, temperature, catalysts, effluent rate, and pH. The analytical procedures are done with CN-, NH3-N, COD, NO3-, NO2-. As a result, temperature is the dominate factor to removal CN- which the best removal efficiency getting up to 99% occurs at pressure 5MPa with temperature 240℃ in 100minutes. The CN- removal efficiency of 91% also achieved in the same time and operating pressure but different temperature at 180℃. Other operating parameters are mot effective for the CN- removal . In this field of COD removal, WAO only achieved 38% at pressure 5MPa with temperature 240℃. With the addition of Copper Sulfate, Manganese Oxide, Zinc Oxide in WAO, the COD removal each rises to 75%, 61%, 50%. In comparison with these cataslysts, the Copper Sulfate is the best, Manganese Dioxide is better, Zinc Oxide is common. When pressure rises to 8MPa, the COD removal achieved 89%. For NH3-N, WAO generates most NH3-N, but catalyzed by these three catalysts can decline NH3-N efficiently. Finally, the experiment abjust the desired pH to prove the impact on CN-, NH3-N, and COD. As a result, pH is not a conspicuous parameter for above terms.