Improving the Quality of Treatment Plant Effluent Through Electrocoagulation Process by Using Aluminium Electrode

利用鋁電極的電凝過程提升處理廠出水品質

Amir Zahraei Salehi ； Behnoush Aminzadeh Goharrizi ； Zeynab Gharyanpoor

《台灣水利》 69卷3期 (2021/09) Pp. 59-68

https://doi.org/10.6937/TWC.202109/PP_69(3).0007

摘要

The industrial sector is one of the main consumers of water resources. Due to a large number of industrial estates, using the methods such as electrocoagulation to improve the quality of industrial effluents on the same industrial processes seems necessary. The effective parameters in the water quality index according to Regulation 462 were used. An aluminium electrode with bipolar connection was applied, and 17 experiments were designed using Minitab software. Then the experiments were optimized using the response surface methodology (RSM). Optimal operating conditions in the removal of COD from the effluent of the wastewater treatment plant at pH = 5.9, time = 30 minutes and electric current intensity of 1.1 amps, was equivalent to 59.288% and in the best case by considering the rate of improvement in terms of water quality and energy consumption. The simultaneous effect of all parameters from the regulation were determined as pH = 6, time = 60 minutes and the intensity of electric current of 1 amp, in which case the water quality improved by 26.419%. According to the obtained results, it was found that the process of electrocoagulation using aluminium electrode can improve the quality of the effluent treatment plant for use in industrial processes.

關鍵字

Electrocoagulation ； Industrial wastewater ； Wastewater quality ； Aluminum Electrode

並列摘要

工業部門為水資源的主要消耗者，而工業園區數量龐大，在相同的工業過程中使用電凝等方法來提高工業廢水的質量似乎是必要的。因此，Regulation 426所規定的水質指標中的有效參數則被相應使用。本研究採用雙極連接的鋁電極，並使用Minitab軟體設計了17個實驗，並使用反應曲面法（RSM）優化實驗。去除廢水處理廠出水中COD的最佳操作條件為pH=5.9、時間=30 min和電流強度1.1 amp，在考量水質提升和能源消耗的情況下，改善程度可達59.288%。由Regulation 426參數得到的結果為pH=6，時間=60 min和1 amp的電流強度，在這種情況下，水質可改善26.419%。研究結果表明，使用鋁電極的電凝過程可以提高工業過程中使用的污水處理廠的質量。

並列關鍵字

電凝 ； 工業廢水 ； 廢水品質 ； 鋁電極

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