Experimental Study on the Treatment of Low Concentration Domestic Sewage in a Zeolite Biological Aerated Filter

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Abstract:

The present paper describes the performance and the feasibility of the zeolite biological aerated filter applied to treat the low concentration sewage as recalaimed water reuse as cooling tower make-up water in the thermal power plant. The result showed that average removal rate of COD, turbidity and ammonia was 79%, 86% and 50% respectively, under the conditions of hydraulic loading L=4.4m3/m2•h, gas-water ratio=2:1, HRT=0.63h, t=8.5~14.5oC and backwashing in 48 hours. The average concentration of COD, turbidity and ammonia in effluent was 13.0mg/l, 4.2NTU and 1.95mg/l, respectively. The effluent quality met the water quality standards of the reuse of urban recycling water-water quality standard for industrial uses GB/T19923-2005.

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Advanced Materials Research (Volumes 518-523)

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3020-3025

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May 2012

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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