摘要:

Utilities generally strive to equip their water systems with the most modern storage, distribution, and treatment facilities available, but many do not apply the same effort to the maintenance and revitalization of their accounting systems.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1980.tb04603.x

出版商:Wiley    

年代:1980

数据来源: WILEY

摘要:

Only recently have people become aware that groundwater contamination can adversely affect drinking water quality and endanger human health. Just in the past year numerous reports have surfaced on the devastating impact that long‐term pollution may have on groundwater. In an attempt to prevent groundwater contamination, the Environmental Protection Agency is now in the process of developing regulations that will govern dumping of wastes, sanitary landfill operations, and underground Injection of waste material. During the 1980 AWWA conference in Atlanta, Ga., a discussion was held concerning groundwater resources, comoderated by Thomas J. Buchanan, assistant chief hydrologist, US Geological Survey, Washington, D.C., and David W. Miller, partner, Geraghty&Miller Consulting Engineers, Syosset, NY. Participants In the group were George L. Craft, water resources engineer, AWWA, Denver, Colo.; August A. Guerrera, chief chemist, Suffolk County Water Authority, Oakdale, N.Y.; Craig D. Vogt, chief, science and technology branch, US Environmental Protection Agency, Washington, D.C.; and Edward I. Selig, attorney, Boston, Mass.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1980.tb04604.x

出版商:Wiley    

年代:1980

数据来源: WILEY

摘要:

A city's increase in the rate charged for extending its water mains was predicated upon a cost recovery basis and did not, according to the Idaho Supreme Court, constitute an improper revenue raising measure levied against a particular class of citizens.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1980.tb04605.x

出版商:Wiley    

年代:1980

数据来源: WILEY

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1980.tb04615.x

出版商:Wiley    

年代:1980

数据来源: WILEY

摘要:

Developing water supply for developing nations means more than just providing water. It also means building institutions, building a nation, and bestowing the myriad benefits that emanate from water hygiene, lower disease rates, as well as the less obvious political fruits of growth, economic development, and agricultural and industrial expansion.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1980.tb04608.x

出版商:Wiley    

年代:1980

数据来源: WILEY

摘要:

From shallow contaminated farm wells to one of the world's most advanced reverse osmosis treatment plants, from precise plant operation In urban areas to wholly inadequate operation and maintenance of facilities in rural municipalities, Saudi Arabia's water supply system is one of extreme contrasts. Establishing a safe, steady supply for the nation as a whole is a goal whose success hinges on institution building and massive social change as well as on training and retaining capable personnel at all levels of operation and project management.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1980.tb04609.x

出版商:Wiley    

年代:1980

数据来源: WILEY

摘要:

In the midst of construction on the new Puerto Mallarino plant, the city of Cali, Colombia, was faced with possible water rationing as a result of increased consumer demand. To quickly provide economical water services in the interim between construction and operation of the new plant and so avoid water rationing, the public utility added 83 ML/day (19 mgd) to the capacity of its 50‐year‐old Rio Cali plant. This plant provides the city's most economical supply and the upgrading, which used indigenous materials, was remarkably inexpensive.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1980.tb04610.x

出版商:Wiley    

年代:1980

数据来源: WILEY

摘要:

Providing economically feasible household‐connected water systems to the rural, low income areas of a developing nation is a task of almost overwhelming magnitude. The Barangay Water Program in the Philippines, however, is on the way to accomplishing just that. A check of early system installation practices uncovered some surprising facts and ultimately led to several economically viable alternatives to conventional system design.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1980.tb04611.x

出版商:Wiley    

年代:1980

数据来源: WILEY

摘要:

Lack of an adequate water supply is now a thing of the past for the island of Vieques. On Feb. 10, 1978, a submarine water transmission main from mainland Puerto Rico to Vieques was inaugurated. This facility has dramatically increased the potable water supply for the island, eliminating the need for the operation of twelve low production wells whose waters have a high dissolved solids content. The most Important aspect of the project is that it guarantees a continuous and reliable flow of potable water to the 8000 inhabitants who have had to endure water shortages for many years.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1980.tb04612.x

出版商:Wiley    

年代:1980

数据来源: WILEY

摘要:

Chlorohydrocarbon solvents in concentrations up to 1 mg/L are being found with disturbing frequency in ground and surface water supplies across the US. In addition, trihalomethane levels in many water systems exceed the federal standard of 0.1 mg/L. Preliminary analyses suggest that aeration may be a cost‐effective process for removal of these trace organic contaminants. The authors have developed a procedure for the process design of air stripping in packed towers for the removal of volatile organic contaminants, which follow Henry's law at low concentrations. The design methodology incorporates the effects on system design of water and air temperature, volatility of the contaminant, and type and size of packing. It provides an analytical method for estimating the relative cost of air stripping for removal of volatile organic compounds, as well as a quantitative framework for design and evaluation of pilot plant studies.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1980.tb04613.x

出版商:Wiley    

年代:1980

数据来源: WILEY