連續加藥Sono-Fenton程序降解拉草之研究

Degradation of Alachlor Wastewater by Continuous Dosing Sono-Fenton Process

王綮慷(Chi-Kang Wang)；劉宗翰(Zong-Han Liu)

Sono-Fenton程序 ； 拉草 ； 連續加藥 ； 降解 ； Sono-Fenton process ； alachlor ； continuous dosing ； degradation

先進工程學刊

8卷4期（2013 / 10 / 01）

223 - 227

繁體中文

拉草是一種在台灣廣泛使用的除草劑，美國環保署亦證實與高劑量之拉草長期接觸具有致癌之可能性，因此本研究利用連續加藥Sono-Fenton程序處理含拉草之廢水，除了探討各種反應因子的影響亦期望有效的降解拉草。實驗結果顯示，低pH條件可有效提升拉草之去除效果，但過量的H2O2及Fe^(2+)加入並無助益。反應設定於pH 3、H2O2 2 mg/min及Fe^(2+) 20 mg/L時，經過10分鐘的反應即可達到100%的拉草分解率，同時礦化率最高可達47%，為最佳之實驗條件，因此可得知，連續加藥Sono-Fenton程序確實可在短時間內有效的降解拉草。

Alachlor is a wildly used herbicide in Taiwan, which has been proven by USEPA as a carcinogenic chemical when human beings are exposed to higher above the maximum contaminant level with long time. Therefore, in this study, a continuous dosing Sono-Fenton process was used to effectively degrade the alachlor content in wastewater and investigate the parameters to the effect of reaction. Experimental results showed lower pH levels were contributive to enhance the degradation efficiency of alachlor while additional dosages of H2O2 and Fe^(2+) were useless. When the reaction condition was set at pH 3, H2O2 2 mg/min and Fe^(2+) 20 mg/L, degradation of alachlor reached 100% within 10 min reaction time along with 47% of mineralization, which could be defined as the optimal condition. In conclusion, a continuous dosing Sono-Fenton process can effectively degrade the alachlor within very short reaction duration.