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| 1. |
From nearly nothing to really something |
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Opflow,
Volume 7,
Issue 9,
1981,
Page 1-6
Jerry Skeels,
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PDF (1785KB)
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摘要:
The Spring Valley Mutual Water Association is a very small system located northwest of Boulder, Colorado. The approach of the SVMWA to installing meters, using wells, probing and monitoring wells, disinfecting with chlorine, inspecting water quality and undertaking leak detection are covered.
ISSN:0149-8029
DOI:10.1002/j.1551-8701.1981.tb00741.x
出版商:Wiley
年代:1981
数据来源: WILEY
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| 2. |
Corrections |
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Opflow,
Volume 7,
Issue 9,
1981,
Page 2-2
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PDF (89KB)
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摘要:
Correct answers for question 7, dealing with horsepower rating, pump and motor efficiency, and power consumption, in OpFlow's April 1981 “Certification Corner” are given.
ISSN:0149-8029
DOI:10.1002/j.1551-8701.1981.tb00746.x
出版商:Wiley
年代:1981
数据来源: WILEY
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| 3. |
Common customer complaint: “My hot water stinks” |
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Opflow,
Volume 7,
Issue 9,
1981,
Page 3-4
David J. Hack,
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PDF (963KB)
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摘要:
Non‐pathogenic anaerobic bacteria, such as Desulfuvibrio desulfuricans, form enzymes as a metabolic function that accelerate the sulfate‐reduction reaction. The subsequent production of hydrogen sulfide gas creates a distinctive rotten egg odor which causes many customer complaints. Oxidation by chlorination, maintenance of chlorine residuals in the distribution system, cathodic protection, and ion exchange water softeners are discussed. Remedies for rotten egg odor include maintaining chlorine residuals, flushing distribution lines, killing bacteria with heat, replacing magnesium anode rods, and removing cathodic‐protection anodes.
ISSN:0149-8029
DOI:10.1002/j.1551-8701.1981.tb00742.x
出版商:Wiley
年代:1981
数据来源: WILEY
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| 4. |
Certification corner |
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Opflow,
Volume 7,
Issue 9,
1981,
Page 4-7
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PDF (953KB)
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摘要:
This month's “Certification Corner” covers various measurement equivalents and interpretations, substance forms, iron content of finished water, pump operation and maintenance, backflow prevention devices, and valves used to sectionalize water systems.
ISSN:0149-8029
DOI:10.1002/j.1551-8701.1981.tb00743.x
出版商:Wiley
年代:1981
数据来源: WILEY
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| 5. |
Sampling and testing: essential for quality control |
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Opflow,
Volume 7,
Issue 9,
1981,
Page 5-7
Susan Ferguson,
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PDF (1821KB)
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摘要:
The total coliform analysis test is an essential part of a water treatment facility's quality control program. This group of bacteria is used as a pollution indicator because of its close association with pathogenic (disease‐causing) organisms. Sampling apparatus, locations, and techniques are covered.
ISSN:0149-8029
DOI:10.1002/j.1551-8701.1981.tb00744.x
出版商:Wiley
年代:1981
数据来源: WILEY
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