Journal of Food, Agriculture and Environment

Study of penetration behavior and influencing factors on Copepod in biological activated carbon filter

Author(s):

Tao Lin ^{1, 2}, Jian Zhang ¹, Wei Chen ^{1, 2}*, Wei Hua ³

Recieved Date: 2012-01-20, Accepted Date: 2012-04-26

Abstract:

The implication of Copepod found in biological activated carbon (BAC) filter in China is a threat to public health of the concern water utilities. Filter height, running time and flow of velocity significantly influenced the Copepod penetration rate according to the response surface methodology (RSM) used, which illustrates that initiative migration ability was the main reason for Copepod penetration in BAC filter. Small-scale experiments were conducted to evaluate the controlling population densities of Copepod within BAC filter by backwashing. The study employed core sampling of BAC filter at various depths and times throughout a backwash cycle at various backwash bed expansion, which suggested that routine backwashing, altered the spatial distribution of Copepod, but not their overall abundance. In small-scale glass columns 38–52% of the small (0.3-0.6 mm shell height) Copepod were removed by a BAC backwash bed expansion of 30-40%. However, bed expansions of greater than 20% were not possible in the BAC filter. 

Keywords:

Copepod, penetration, biological activated carbon (BAC) filter, backwashing

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Journal: Journal of Food, Agriculture and Environment
Year: 2012
Volume: 10
Issue: 2
Category: Environment
Pages: 914-918

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