A Hybrid Treatment System Combining Enforced Diatomite Process Followed by Biological Aerated Filters for Wastewater Treatment

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A hybrid treatment system combining enforced diatomite process followed by biological aerated filters (BAF) was developed for treatment of municipal wastewater. Most pollutants, especially phosphorus, were removed in the enforced diatomite process and BAFs took a role of polishing process. New ceramic filter media and ceramisite agitator were used in two BAFs for comparison. The results showed that when the average influent CODcr was 347mg/L, NH4+-N 49mg/L and TP 6.1mg/L, the removal efficiency was 92.6%, 99.8%, and 96.4% respectively at the operating conditions of precise diatomite dosage of 75mg/L, the sludge reflux ratio 100%, the HRT of 30min in diatomite enhanced primary treatment process and the HRT of 1.5h in BAF.

Info:

Periodical:

Advanced Materials Research (Volumes 588-589)

Edited by:

Lawrence Lim

Pages:

2055-2059

Citation:

W. L. Wang et al., "A Hybrid Treatment System Combining Enforced Diatomite Process Followed by Biological Aerated Filters for Wastewater Treatment", Advanced Materials Research, Vols. 588-589, pp. 2055-2059, 2012

Online since:

November 2012

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$38.00

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