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| 1. |
Filter Media Requires Scheduled Maintenance |
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Opflow,
Volume 14,
Issue 11,
1988,
Page 1-4
Donald J. Mackay,
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PDF (907KB)
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摘要:
This article is the second part of a three‐part article on operation and maintenance of filtration systems. This part focuses on the upkeep of filter media. Problems that can develop in the filter media include mudballs, cracks and separations. During scheduled maintenance the following areas should be checked: bed depth, size of media, number of mudballs, surface‐wash units, gravel, and the underdrain.
ISSN:0149-8029
DOI:10.1002/j.1551-8701.1988.tb00499.x
出版商:Wiley
年代:1988
数据来源: WILEY
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| 2. |
Vacuum Makes Quick Work of Valve‐Box Cleanup |
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Opflow,
Volume 14,
Issue 11,
1988,
Page 3-3
Nelson Hartwell,
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PDF (630KB)
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摘要:
This article discusses the use of a heavy‐duty industrial vacuum to clean out valve boxes.
ISSN:0149-8029
DOI:10.1002/j.1551-8701.1988.tb00498.x
出版商:Wiley
年代:1988
数据来源: WILEY
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