Performance of submerged membrane bioreactor (SMBR) with and without the addition of the different particle sizes of GAC as suspended medium

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Journal Article
Bioresource Technology, 2013, 141 pp. 13 - 18
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In this study the effect of different particle sizes of granular activated carbon (GAC) on the performance of a submerged membrane bioreactor (SMBR) was investigated. The sizes of GAC used were 150300, 300600 and 6001200 µm. The SMBR was operated at a filtration flux of 20 L/m2 h. The removal of dissolved organic carbon (DOC) and chemical oxygen demand (COD) with the addition of GAC was 95%. The concentration of biopolymers, humic, building block and low molecular weight neutral and acids in the SMBR effluent was reduced by 20%, 6676%, 2050%, 3056%, respectively. It helped to reduce the sludge volume index (SVI) and transmembrane pressure (TMP) development by 3040% and 58%, respectively. However, the removal of View the MathML source and View the MathML source was relatively low of 3545% and 3443%, respectively. The SMBR effluent was rich in View the MathML source and was removed/recovered using hydrated ferric oxide (HFO). The removal of View the MathML source was almost 90%.
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