A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Effect of Filtration Rate on Filtrate Quality
In the filtration of water through a granular medium, the effective utilization of the total depth of the medium is sought. Increased grain size and increased filtration rates are two current approaches for inducing deeper penetration of suspended solids into the bed. The purpose of this investigation was to examine, on a plant scale, the effects of filtration rate, influent water quality, and filter media sizes and porosity on filtrate quality. Both sand filters and anthracite filters were examined, and the differences in the performance of both media are attributable to differences in grain size and porosity of the two materials, rather than the materials themselves. The effects of filtration rate and influent turbidity on filtrate quality were also a function of media grain size and porosity. Another problem with the coarser medium was the poor effluent quality at all rates during the initial operating period after backwashing. The results of these experiments indicate that the conventional rate of 2 gpm/sq ft is not necessarily the correct rate.
Effect of Filtration Rate on Filtrate Quality
In the filtration of water through a granular medium, the effective utilization of the total depth of the medium is sought. Increased grain size and increased filtration rates are two current approaches for inducing deeper penetration of suspended solids into the bed. The purpose of this investigation was to examine, on a plant scale, the effects of filtration rate, influent water quality, and filter media sizes and porosity on filtrate quality. Both sand filters and anthracite filters were examined, and the differences in the performance of both media are attributable to differences in grain size and porosity of the two materials, rather than the materials themselves. The effects of filtration rate and influent turbidity on filtrate quality were also a function of media grain size and porosity. Another problem with the coarser medium was the poor effluent quality at all rates during the initial operating period after backwashing. The results of these experiments indicate that the conventional rate of 2 gpm/sq ft is not necessarily the correct rate.
Effect of Filtration Rate on Filtrate Quality
Segall, Burton A. (author) / Okun, Daniel A. (author)
Journal ‐ American Water Works Association ; 58 ; 368-378
1966-03-01
11 pages
Article (Journal)
Electronic Resource
English
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