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| 1. |
How to Tame an Aggressive Softened Water |
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Opflow,
Volume 20,
Issue 2,
1994,
Page 1-5
Leland L. Harms,
Bennet C. Kwan,
Darshan S. Sarai,
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PDF (1401KB)
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摘要:
Water District No. 1 of Johnson County, Kansas, improved its finished water quality by adopting operating techniques that ensured the precipitation of calcium carbonate throughout the distribution system. Carbonate precipitation was achieved by slightly raising pH, alkalinity, and total hardness levels. Results showed a decrease in corrosion rates as well as a decrease in consumer complaints regarding water quality. When adapting the methods discussed in this article to other water systems, coupons should be placed near the treatment plant and midway in the distribution system. A few coupons placed near dead ends will help discern whether the adjusted treatment is penetrating the entire system. Flushing dead‐end lines will help facilitate this penetration.
ISSN:0149-8029
DOI:10.1002/j.1551-8701.1994.tb01233.x
出版商:Wiley
年代:1994
数据来源: WILEY
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| 2. |
Maintenance Planning Can Help You Do Your Job Better |
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Opflow,
Volume 20,
Issue 2,
1994,
Page 3-3
Trudie Lay,
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PDF (118KB)
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摘要:
Sadly enough, since most distribution system and water operations occur silently, underground, maintenance is often treated as an afterthought. After a water quality problem, after a main break, after valves freeze…and on, and on. Whether you operate a large or small, public or private water system, your maintenance plan will have the same purpose. This is part II of a three part series on maintenance planning and operations.
ISSN:0149-8029
DOI:10.1002/j.1551-8701.1994.tb01234.x
出版商:Wiley
年代:1994
数据来源: WILEY
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| 3. |
Math Aerobics Part 2: Efficiency, Percent Problems |
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Opflow,
Volume 20,
Issue 2,
1994,
Page 6-7
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PDF (113KB)
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摘要:
This article focuses on solving efficiency and percent calculations.
ISSN:0149-8029
DOI:10.1002/j.1551-8701.1994.tb01235.x
出版商:Wiley
年代:1994
数据来源: WILEY
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| 4. |
Is Your Groundwater Under the Influence of Surface Water? |
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Opflow,
Volume 20,
Issue 2,
1994,
Page 8-8
Frederick W. Pontius,
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PDF (82KB)
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摘要:
Groundwater sources under direct influence of surface water must comply with the Surface Water Treatment Rule (SWTR). Groundwater sources that are not directly influenced by surface water are not subject to the rule. When is groundwater influenced by surface water, and when is it “directly” influenced? These are key questions for water suppliers that use groundwater from an aquifer that is recharged by a surface water source. This brief article clarifies “direct influence.”
ISSN:0149-8029
DOI:10.1002/j.1551-8701.1994.tb01236.x
出版商:Wiley
年代:1994
数据来源: WILEY
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| 5. |
Get Grip on Metal Valve Lids With Magnetic Handle |
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Opflow,
Volume 20,
Issue 2,
1994,
Page 10-10
William Woodard,
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PDF (691KB)
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摘要:
The article discusses a magnetic handle to assist in removing valve lids. Materials and instructions are provided.
ISSN:0149-8029
DOI:10.1002/j.1551-8701.1994.tb01237.x
出版商:Wiley
年代:1994
数据来源: WILEY
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