
	Pakistan Journal of Biological Sciences
	Year: 2007 \| Volume: 10 \| Issue: 18 \| Page No.: 3039-3047 DOI: 10.3923/pjbs.2007.3039.3047

Evaluation of Operation of Submerged Aerated Filters in Wastewater Treatment and Excess Sludge Production

Mohammad A. Baghapourm and Ibrahim Jabbari

Abstract: The aims of this study were to evaluate the SCOD removal efficiency in submerged biological aerated filters (BAFs) and subsequently to assess the relationship between the specific surface area (S_s) and Excess Sludge Production (ESP) rate in such filters. Accordingly, four filters with different porosity and specific surface (647, 295, 175 and 136 m² m^-3) have been loaded with synthetic wastewater based on low fat dry milk powder with COD of 1500 mg L^-1 in different hydraulic retention time (8, 4, 2, 1 and 0.5 h). In this study, it was shown that specific surface increase of the filters initially increases the efficiency of the filters and after a certain value, the filter efficiency remains uncharged or decreases, as in HRT of 8 h the SCOD removal efficiency of filters 1 and 2 (S_s = 647 m² m^-3 and S_s = 295 m² m^-3) were 89.8 and 91% at VOL of 3.195 and 3.727 kg COD m^-3 d^-1, respectively. Also, the results showed that in all the filters, the production rate of suspended sludge increases inversely with the hydraulic retention time and the media with higher porosity (90.5%) produced less suspended sludge (8-57 g m^-3) despite having lower efficiency in the SCOD removal.

PDF Fulltext XML References Citation Report Citation

How to cite this article:

Mohammad A. Baghapourm and Ibrahim Jabbari , 2007. Evaluation of Operation of Submerged Aerated Filters in Wastewater Treatment and Excess Sludge Production. Pakistan Journal of Biological Sciences, 10: 3039-3047.

DOI: 10.3923/pjbs.2007.3039.3047

URL: https://scialert.net/abstract/?doi=pjbs.2007.3039.3047

COMMENT ON THIS PAPER

Navigation


		Online First
		Current Issue
		Previous Issues
		Editorial Board
		Submit a Manuscript
		Guide to Authors
		Subscribe to E-alerts

Indexed In


		AGRIS
		ASCI-Database
		Asian Digital Library
		Cambridge Scientific Abstract
		Chemical Abstract Services
		Google Scholar
		ISI Web of Knowledge
		PubMed
		SCIMAGO
		Thomson ISI

Science Alert