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| 1. |
Proper Treatment, Maintenance Aids Filtration Process |
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Opflow,
Volume 1,
Issue 9,
1975,
Page 1-7
Michael D. Curry,
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PDF (815KB)
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摘要:
Clogged filters can become a problem in any water utility. Proper maintenance of filters will help eliminate such problems. Algae in the water is a particular concern since it is very difficult to remove from the filters. If possible, algae should be prevented from entering a plant by addition of copper sulfate to the water supply or by potassium permanganate addition. Air should also be prevented from entering the filters as this is detrimental to filtration and backwash.
ISSN:0149-8029
DOI:10.1002/j.1551-8701.1975.tb00823.x
出版商:Wiley
年代:1975
数据来源: WILEY
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| 2. |
Demonstration Panel Indicates How To Test Cross Connections |
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Opflow,
Volume 1,
Issue 9,
1975,
Page 2-2
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PDF (79KB)
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摘要:
The demonstration panel described here is used to test cross‐connection control units. The unit must be designed so it can be easily removed from service for testing. The equipment should not be installed near the ceiling if people will be walking or working beneath it. It should not be installed above boilers or other industrial processes, or allowed to discharge directly onto a floor.
ISSN:0149-8029
DOI:10.1002/j.1551-8701.1975.tb00824.x
出版商:Wiley
年代:1975
数据来源: WILEY
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| 3. |
Cross Connections—Legal or Lethal? |
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Opflow,
Volume 1,
Issue 9,
1975,
Page 3-5
Ira M. Markwood,
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PDF (223KB)
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摘要:
The hazards of cross connections are discussed, as well as methods of preventing contamination from occurring. Positive air gaps, vacuum breakers, a diaphragm‐operated valve, and backflow prevention devices are covered.
ISSN:0149-8029
DOI:10.1002/j.1551-8701.1975.tb00826.x
出版商:Wiley
年代:1975
数据来源: WILEY
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