SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2013, Vol. 21 ›› Issue (11): 1251-1259.DOI: 10.1016/S1004-9541(13)60617-5

• 分离科学与工程 • 上一篇    下一篇

Effect of Coagulant Agents on Oily Wastewater Treatment Performance Using Mullite Ceramic MF Membranes: Experimental and Modeling Studies

Mohsen Abbasi1, Aboozar Taheri2   

  1. 1 Department of Chemical Engineering, Lamerd Branch, Islamic Azad University, Lamerd, Iran;
    2 Department of Chemistry, Lamerd Branch, Islamic Azad University, Lamerd, Iran
  • 收稿日期:2012-07-02 修回日期:2012-12-15 出版日期:2013-11-28 发布日期:2013-11-26
  • 通讯作者: Mohsen Abbasi

Effect of Coagulant Agents on Oily Wastewater Treatment Performance Using Mullite Ceramic MF Membranes: Experimental and Modeling Studies

Mohsen Abbasi1, Aboozar Taheri2   

  1. 1 Department of Chemical Engineering, Lamerd Branch, Islamic Azad University, Lamerd, Iran;
    2 Department of Chemistry, Lamerd Branch, Islamic Azad University, Lamerd, Iran
  • Received:2012-07-02 Revised:2012-12-15 Online:2013-11-28 Published:2013-11-26
  • Contact: Mohsen Abbasi

摘要: In this paper, fouling mechanisms of mullite ceramic membranes for treatment of oily wastewaters in hybrid coagulation-microfiltration (MF) process presented. Hermia's models for cross flow filtration were used to investigate the fouling mechanisms of membranes with various coagulating chemicals concentrations. Four coagulating chemicals (FeCl2·4H2O, FeSO4·7H2O, AlCl3·6H2O and Al2(SO4)3·18H2O) plus Ca(OH)2 of the same concentration were evaluated in the coagulation-MF hybrid process with different concentrations (0, 50 mg·L-1, 100 mg·L-1 and 200 mg·L-1). To determine whether the data agree with models under consideration, the coefficients of determination (R2) of all models were compared with one another. In addition, average prediction errors of models were calculated. The results showed that cake filtration model can be applied for prediction of permeation flux decline for MF and coagulation-(MF) hybrid process with the best average error equal to 0.09%. Results indicated that pore blocking behavior changes as time of filtration increases, and one model cannot predict pore blocking behavior in all filtration time with very good precision.

关键词: microfiltration, coagulation, fouling, oily wastewater treatment

Abstract: In this paper, fouling mechanisms of mullite ceramic membranes for treatment of oily wastewaters in hybrid coagulation-microfiltration (MF) process presented. Hermia's models for cross flow filtration were used to investigate the fouling mechanisms of membranes with various coagulating chemicals concentrations. Four coagulating chemicals (FeCl2·4H2O, FeSO4·7H2O, AlCl3·6H2O and Al2(SO4)3·18H2O) plus Ca(OH)2 of the same concentration were evaluated in the coagulation-MF hybrid process with different concentrations (0, 50 mg·L-1, 100 mg·L-1 and 200 mg·L-1). To determine whether the data agree with models under consideration, the coefficients of determination (R2) of all models were compared with one another. In addition, average prediction errors of models were calculated. The results showed that cake filtration model can be applied for prediction of permeation flux decline for MF and coagulation-(MF) hybrid process with the best average error equal to 0.09%. Results indicated that pore blocking behavior changes as time of filtration increases, and one model cannot predict pore blocking behavior in all filtration time with very good precision.

Key words: microfiltration, coagulation, fouling, oily wastewater treatment