The effect of stirring speed and current density on removal efficiency of poultry slaughterhouse wastewater by electrocoagulation method
The effect of stirring speed and current density on removal efficiency of poultry slaughterhouse wastewater by electrocoagulation method
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DOI：
10.1016/j.desal.2011.06.061
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发表时间：
2011-10-03
期刊：
影响因子：
9.9
通讯作者：
Irdemez, Sahset
中科院分区：
文献类型：
--
作者：
Bayar, Serkan;Yildiz, Yalcin Sevki;Irdemez, Sahset
研究了电流密度和搅拌速度对铝电极电凝聚法处理家禽屠宰废水的影响。在实验中，初始pH值和电流密度分别选择在3和7之间，0.5和2.0 mA/cm（2）。当初始pH值为3.0，电流密度为1.0mA/cm ~ 2时，去除率最高。增大电流密度值会降低COD去除率。在电流密度为0.5、1.0、1.5和2.0mA/cm ~ 2时，去除率最高，分别为85、85、81和71%。这些去除效率的初始pH值为4.0，3.0，3.0和5.0。当进行实验以研究浊度去除效率时，发现1.0mA/cm（2）的电流密度提供98%的去除效率。从使用100、150和250 rpm的搅拌速度的实验中获得的结果表明，去除效率为85。在电流密度为1.0mA/cm ~ 2时，其转化率分别为90%和75%。结果表明，电凝聚法是一种较好的处理PSW的方法。研究废水的电导率接近2860 μ S/cm，这使得能耗相对较低。(C)2011爱思唯尔有限公司版权所有。
The aim of study is to investigate the effect of current density and stirring speed in the treatment of poultry slaughterhouse wastewater (PSW) using electrocoagulation with aluminum electrodes. In the experiments, initial pH and current density were chosen between 3 and 7, and 0.5 and 2.0 mA/cm(2) respectively. The best removal efficiency has been obtained, when initial pH and current density were adjusted to 3.0 and 1.0 mA/cm(2), respectively. Increasing current density values decreased COD removal efficiency. The highest removal efficiencies of 85, 85, 81 and 71% were obtained with the current density of 0.5, 1.0, 1.5 and 2.0 mA/cm(2), respectively. Initial pH values of these removal efficiencies were 4.0, 3.0, 3.0 and 5.0. When experiments were performed to investigate the turbidity removal efficiency, it was found that current density of 1.0 mA/cm(2) provided 98% removal efficiency. Results obtained from the experiments where stirring speed of 100, 150 and 250 rpm were used showed the removal efficiency of 85. 90 and 75% respectively with the current density of 1.0 mA/cm(2). Results showed that electrocoagulation is a suitable method for treatment of PSW. Electrical conductivity of investigated wastewater was nearly 2860 mu S/cm, which caused energy consumption to be relatively lower. (C) 2011 Elsevier B.V. All rights reserved.