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| 1. |
Chlorine—‘Special Agent’ for Disinfecting Water |
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Opflow,
Volume 8,
Issue 9,
1982,
Page 1-7
Ralph Leidholdt,
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PDF (306KB)
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摘要:
Chlorination is considered the most economical, efficient, and easily‐applied method of disinfecting water. This article discusses three forms of chlorine used to disinfect water, chlorine (liquid or gas), calcium hypochlorite, and sodium hypochlorite. Chlorine residual is also defined. Three sample dosage calculation problems accompany the article.
ISSN:0149-8029
DOI:10.1002/j.1551-8701.1982.tb00071.x
出版商:Wiley
年代:1982
数据来源: WILEY
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| 2. |
‘Snell's Meter‐Box Snatcher’ Lightens a Lifter's Load |
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Opflow,
Volume 8,
Issue 9,
1982,
Page 3-3
C.T. Snell,
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PDF (742KB)
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摘要:
Lifting meter boxes out of the ground can be a difficult task, especially if the ground is wet. One device that makes the job easier is “Snell's Meter‐Box Snatcher.” The device is described and illustrated here.
ISSN:0149-8029
DOI:10.1002/j.1551-8701.1982.tb00068.x
出版商:Wiley
年代:1982
数据来源: WILEY
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| 3. |
‘Examsmanship‘—How to Take a Certification Exam |
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Opflow,
Volume 8,
Issue 9,
1982,
Page 4-5
Chuck Beer,
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PDF (212KB)
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摘要:
This article gives advice on how to prepare and take Certification Exams, along with suggestions on how to tackle calculation problems. The author also includes a list of recommended text books to study in preparation for a water utility operator exam.
ISSN:0149-8029
DOI:10.1002/j.1551-8701.1982.tb00070.x
出版商:Wiley
年代:1982
数据来源: WILEY
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