Submerged Membrane Bioreactor with Chitosan Bead Addition and Optimization of Operational Parameters

Abstract

Abstract

In the present study the influence of suction flux, chitosan bead addition and aeration intensity on fouling was investigated using 2³ factorial designs.  Maximum and minimum values for suction flux (4–8 L/m².h), chitosan bead addition (0.25–0.5 g/g MLSS) and aeration intensity (0.3–0.6 m³/m².h) were adopted as the base of membrane bioreactor operation for synthetic wastewater treatment.  Concerning the fouling ability of the three factors, suction flux was observed to have the largest effect on resistance increase followed by aeration intensity and chitosan bead addition.  The best recommendation of the system operation was performed at low suction flux with high aeration intensity and high chitosan bead addition.