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Respirometric analysis of activated sludge models from palm oil mill effluent

Ujang, Zaini and Salim, Mohd. Razman and Ollson, Gustaf and Damayanti, Alia and Sulaiman, A. Z. (2010) Respirometric analysis of activated sludge models from palm oil mill effluent. Bioresource Technology, 1 (1). 144 - 149. ISSN 0960-8524

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Official URL: http://dx.doi.org/10.1016/j.biortech.2009.08.034

Abstract

Activatedsludgemodels (ASMs) have been widely used as a basis for further model development in wastewater treatment processes. Values for parameters to be used are vital for the accuracy of the modeling approach. A continuous stirred tank reactor (CSTR), as open respirometer with continuous flow for 20 h is used in ASMs. The dissolved oxygen (DO) profile for 11 days was monitored. It was found the mass transfer coefficient KLa is 0.3 h-1 during lag and start feed phase and 0.01 h-1 during stop feed phase, while the heterotrophic yield coefficient YH is 0.44. Some of the chemical oxygen demand (COD) fractionations of palmoilmilleffluent (POME) using respirometric test in ASM models are Ss 50 mg/L, SI 16,600 mg/L, XS 25,550 mg/L, and XI 2,800 mg/L. The comparison of experimental and ASM1 from OUR concentration is found to fit well.

Item Type:Article
Uncontrolled Keywords:activated sludge models, COD fractionations, palmoilmilleffluent, respirometry test
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Civil Engineering
ID Code:26520
Deposited By: Liza Porijo
Deposited On:18 Jul 2012 01:42
Last Modified:20 Aug 2014 04:10

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