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| 1. |
Heavy Equipment Demands Respect |
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Opflow,
Volume 4,
Issue 9,
1978,
Page 1-5
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PDF (831KB)
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摘要:
A check list of safety precautions to be observed while working around heavy equipment is presented.
ISSN:0149-8029
DOI:10.1002/j.1551-8701.1978.tb01106.x
出版商:Wiley
年代:1978
数据来源: WILEY
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| 2. |
Failure to Inspect and Routinely Maintain Rapid‐Sand Filters Results in Extra Labor and Expense for Blissfield, Michigan |
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Opflow,
Volume 4,
Issue 9,
1978,
Page 3-3
Richard E. Benzie,
Paul Van Norman,
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PDF (928KB)
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摘要:
This article describes the deterioration and rehabilitation of rapid sand filters in Blissfield, Michigan. Bonded sand and gravel caused by calcium carbonate carryover into the filters and gravel mounding caused by poor distribution of the backwash water resulting from plugged underdrains created critical operational inefficiencies in the village's water treatment plant. Routine inspection and maintenance could have prevented this occurrence.
ISSN:0149-8029
DOI:10.1002/j.1551-8701.1978.tb01108.x
出版商:Wiley
年代:1978
数据来源: WILEY
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| 3. |
Gimmicks and Gadgets |
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Opflow,
Volume 4,
Issue 9,
1978,
Page 4-4
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PDF (720KB)
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摘要:
The hydrant sling described here is a device for lifting and transporting fire hydrants.
ISSN:0149-8029
DOI:10.1002/j.1551-8701.1978.tb01110.x
出版商:Wiley
年代:1978
数据来源: WILEY
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| 4. |
Certification Corner |
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Opflow,
Volume 4,
Issue 9,
1978,
Page 5-6
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PDF (164KB)
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摘要:
Topics in this month's “Certification Corner” include the hydrologic cycle, disease‐producing organisms, the science of water distribution, water‐bearing geological formations, and copper sulfate.
ISSN:0149-8029
DOI:10.1002/j.1551-8701.1978.tb01111.x
出版商:Wiley
年代:1978
数据来源: WILEY
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