Biodegradation of naphthalene in the oil refinery wastewater by enriched activated sludge
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Type
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Journal
Article
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Author
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You-Im
Chang
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Author
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Hui-Ping
Cheng
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URL
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Volume
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86,
Part C
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Pages
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272-277
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Publication
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International
Biodeterioration & Biodegradation
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Date
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January
2014
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Abstract
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Describes
a study of naphthalene (NAP) biodegradation by acclimated activated sludge,
using the culture-enrichment method in a continuous flow bioreactor of the
wastewater treatment process. Researchers studied the effects of various COD
loadings and influent flow rates of an artificial wastewater containing
15 mg l−1 NAP on the biodegradation rates of the activated sludge,
in order to determine the biodegradation kinetics and minimum mean cell
residence time of the activated sludge.
They found that the resulting enriched activated sludge follows the growth rate of the Monod type and can biodegrade those COD and NAP loadings in the influents efficiently, and its bio-treatment efficiency on NAPs increases with the decrease of influent flow rate. The sludge volume index (SVI) of the resulting enriched activated sludge meets the design value required by the convectional activated sludge process for the treatment of wastewater. |
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