ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1992.tb07399.x

出版商:Wiley    

年代:1992

数据来源: WILEY

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1992.tb07400.x

出版商:Wiley    

年代:1992

数据来源: WILEY

摘要:

The author argues that water industry personnel must move from being scientists and technicians in a defensive stance to customer service providers who promote quality drinking water. The water industry must answer customer concerns about water quality with redoubled efforts to improve quality and also involve customers in decisions that affect the quantity and quality of water.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1992.tb07401.x

出版商:Wiley    

年代:1992

数据来源: WILEY

摘要:

Tri‐Community Water System provided water to about 1,900 members. The Paradise Trailer Park, comprising 35 mobile homes, had been a member since 1977. One Tri‐Community service line extended to Paradise's property line, where one meter measured the amount of water the park's occupants consumed. From there, separate lines owned by Paradise distributed water to individual homes. Paradise charged occupants a flat monthly fee. Tri‐Community, in turn, charged its members a flat monthly fee of $7 for the first 3,000 gal. used and billed on a graduated scale beyond that. In 1967, Tri‐Community adopted a “multiple user policy” under which Paradise was charged 35 separate flat fees of $7. Paradise challenged the rate structure but lost. However, the trial court found that Tri‐Community violated its own bylaws in instituting the rate change and the trial court decision was reversed.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1992.tb07405.x

出版商:Wiley    

年代:1992

数据来源: WILEY

摘要:

Ed Pokorney, manager of intergovernmental and community affairs for the Denver (Colo.) Water Department, talked with Mark A. Scharfenaker, Journal contributing editor, at AWWA May 22, 1992, about the politics of water supply. Pokorney is also chairman of the Colorado Water Utility Council's Legislative Committee, president of the Colorado Water Congress, member of the National Water Resources Association (NWRA) board of directors, chair of the NWRA'S western municipal caucus, and NWRA representative to the Water Industy Coordinating Committee.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1992.tb07406.x

出版商:Wiley    

年代:1992

数据来源: WILEY

摘要:

Articles in this section of the Journalare dedicated to providing current information about legislative and regulatory developments. They address needs and concerns of water utilities from a practical standpoint; they are not intended to reflect official positions or policies of AWWA. Frederick W. Pontius, AWWA associate director for regulatory affairs, prepared this discussion regarding the Phase V Rule.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1992.tb07407.x

出版商:Wiley    

年代:1992

数据来源: WILEY

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1992.tb07408.x

出版商:Wiley    

年代:1992

数据来源: WILEY

摘要:

One of the last steps in the preliminary design of a treatment plant is to develop the plant layout. By this stage of the design process, the site has been selected, the treatment processes have been identified, and the approximate dimensions of the process units have normally been established. The engineer then must arrange the process units on the site. There are a number of alternative basic plant layouts. The particular plant layout selected can have a significant effect on construction cost, hydraulics, plant performance, operation and maintenance (O&M), and ease of expansion. This article describes a compact plant layout that simplifies O&M and minimizes construction cost.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1992.tb07409.x

出版商:Wiley    

年代:1992

数据来源: WILEY

摘要:

A pilot study was undertaken for a regional water supply project to develop cost‐effective water treatment plant design criteria, ensure compliance with drinking water regulations, produce water that would taste good to potential customers and incorporate processes that protect the water supply from contamination. An integrated pilot testing program allowed for the study of the multiple variables inherent to surface water treatment. The results were used to develop optimal process design criteria that correlate with full‐scale plant construction cost savings. In addition, the pilot study revealed ozonation's beneficial effect on the removal of particles, the operational flexibility of the selected process during sudden changes in raw water turbidity and flow rate, and the capability of the selected process to remove synthetic organic chemicals that may reach the intake.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1992.tb07410.x

出版商:Wiley    

年代:1992

数据来源: WILEY

摘要:

Increased system demands and maintenance requirements dictated that the Kentucky‐American Water Company expand one of its intake facilities. Because the utility did not have the operational flexibility or pumping capacity to vary flow rates or remove the pump station or individual pumps from service, model studies were conducted to determine what measures needed to be taken to operate new intake pumps at maximum efficiency during the lowest river water levels. These studies eliminated the need for major structural renovation or replacement of the intake.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1992.tb07411.x

出版商:Wiley    

年代:1992

数据来源: WILEY