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

Author:

Cui Yan Ping1

Affiliation:

1. Zhengzhou University

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.

Publisher

Trans Tech Publications, Ltd.

Subject

General Engineering

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