Prediction Model for the Treatment of Stabilized Oily Wastewater by Modified Induced Air Flotation (MIAF)

  • Ploypailin Romphophak Chulalongkorn University
  • Tanun Chalermsinsuwan Chulalongkorn University
  • Nattawin Chawaloesphonsiya Chulalongkorn University
  • Pisut Painmanakul Chulalongkorn University
Keywords: Stabilized oily-wastewater, modified induced air floatation, interfacial area, velocity gradient, prediction model.

Abstract

The objective of this study is to propose a prediction model for characterizing stabilized oily-wastewater that has been treated using Induced Air Flotation (IAF) and Modified Induced Air Flotation (MIAF), which is a combination of coagulation and flotation. Wastewater samples containing an anionic surfactant at the critical micelle concentration (CMC) were prepared as the stabilized oily-emulsion. The amount of oil as well as the amount removed was measured using COD. The study shows that the coagulant dosage (CAlum), interfacial area (a), and velocity gradient (G) are the important factors that affect flotation performance. Therefore, the proposed model is based on these parameters in terms of the CAlum and a/G ratio. The maximum removal efficiency and the reduction of the COD values can be predicted for any of the operating conditions. It was found that predicted oily wastewater efficiency and removal kinetic fit reasonably well with those obtained from experiments.

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Author Biographies

Ploypailin Romphophak

International Postgraduate Programs in Environmental Management, Graduate School, Chulalongkorn University, Bangkok, Thailand
Center of Excellence on Hazardous Substance Management (HSM), Chulalongkorn University, Bangkok, Thailand

Tanun Chalermsinsuwan

Department of Environmental Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand

Nattawin Chawaloesphonsiya

International Postgraduate Programs in Environmental Management, Graduate School, Chulalongkorn University, Bangkok, Thailand
Center of Excellence on Hazardous Substance Management (HSM), Chulalongkorn University, Bangkok, Thailand

Pisut Painmanakul

Department of Environmental Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand
Center of Excellence on Hazardous Substance Management (HSM), Bangkok, Thailand, Chulalongkorn University, Bangkok, Thailand

Published In
Vol 20 No 3, Aug 23, 2016
How to Cite
[1]
P. Romphophak, T. Chalermsinsuwan, N. Chawaloesphonsiya, and P. Painmanakul, “Prediction Model for the Treatment of Stabilized Oily Wastewater by Modified Induced Air Flotation (MIAF)”, Eng. J., vol. 20, no. 3, pp. 11-21, Aug. 2016.

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