Reduction of Solids in Leachate Streams by Membrane Bioreactors: Mass Transfer Topics and Fouling Problems

Teresa Castelo-Grande; Paulo A. Augusto; P. Monteiro; Domingos Barbosa

doi:10.4028/www.scientific.net/DDF.273-276.770

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Diffusion of Refractory Elements in Ternary Iron Alloys
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Investigation of Sulfur Transition through Metal-Slag Phase Boundary in Natural Moving Conditions
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Diffusion of Water in Chestnut Fruits during Drying and Rehydration Processes at Different Temperatures
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Drying of a Low Porosity Product (Carrot) as Affected by Power Ultrasound
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Reduction of Solids in Leachate Streams by Membrane Bioreactors: Mass Transfer Topics and Fouling Problems
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Comparison between Maxwell-Stefan and Nernst-Planck Equations to Describe Ion Exchange in Microporous Materials
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Numerical Modelling of the Heat and Mass Transfer in a Channel with Hygroscopic Walls
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A New Approach to Measure Diffusion Coefficients at Different Temperatures – A Simple Experiment
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Experimental Study of Free Convection from a Vertical Flat Plate in Porous Media
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Reduction of Solids in Leachate Streams by Membrane Bioreactors: Mass Transfer Topics and Fouling Problems

Abstract:

In this work the use of Membrane Bioreactors to treat leachate effluents is discussed. The problem of membrane fouling is addressed, and some of the efforts being done to overcome this problem presented. The process optimization requires the reduction of other parameters, some directly related to mass transfer, such as the total amount of solids, the total dissolved solids and the total suspended solids. The preliminary results obtained show the high potential of this technique for the treatment of leachates, mainly for the reduction of solids in leachate streams.