Keywords: UPFLOW
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Journal Articles
Proceedings of the Institution of Civil Engineers (1965) 30 (2): 437.
Published: 01 February 1965
... it is shown that, in the upflow sand filter, deeper penetration of turbidity occurs, resulting in the removal load being distributed more evenly,giving lower head-losses and longer filter runs. Backwashing of these beds is a practical difficulty and seems to be the main reason why they have not become more...

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