摘要:

The author of this letter to the editor details the progress of the Sri Lanka Water Well Project as it was presented at the 47th Zonta International Convention in Australia in the summer of 1984. Money has been raised for over 2650 wells, with a goal of 4000 wells.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1985.tb05463.x

出版商:Wiley    

年代:1985

数据来源: WILEY

摘要:

The elder statesman of the drinking water industry, Abel Wolman, assesses the progress made at midpoint in the International Drinking Water and Sanitation Decade. This is an edited version of his Aug. 14, 1984, report to the American Water Resources Association, Washington, D.C.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1985.tb05464.x

出版商:Wiley    

年代:1985

数据来源: WILEY

摘要:

A lease clause that limited a water district's use of well water was not void and unenforceable, a Tennessee appellate court concluded.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1985.tb05465.x

出版商:Wiley    

年代:1985

数据来源: WILEY

摘要:

Priorities and goals of water industry research in North America were discussed during the 1984 annual conference in Dallas on June 11. Participants were: Wolfgang Kühn of the Engler‐Bunte Institute, Karlsruhe, Federal Republic of West Germany; Michael J. McGuire, water quality manager with The Metropolitan Water District of Southern California; William H. Miller, manager of the Denver Water Department; and J. Edward Singley, vice‐president of J.M. Montgomery Engineers, Gainseville, Fla. John B. Mannion, director of development and communications for the AWWA Research Foundation, was moderator of the roundtable.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1985.tb05469.x

出版商:Wiley    

年代:1985

数据来源: WILEY

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1985.tb05470.x

出版商:Wiley    

年代:1985

数据来源: WILEY

摘要:

The Denver (Colo.) Water Department's long‐term experience with the use of chloramines as a disinfectant can serve as a guide to those who have changed, or are considering a change, to this method. Recommendations include a high‐quality source of raw water and continuous vigilance in monitoring and maintaining the system.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1985.tb05471.x

出版商:Wiley    

年代:1985

数据来源: WILEY

摘要:

One of the largest water utilities in the United States has changed from chlorine in its disinfection process to chloramines for controlling the formation of trihalomethanes. A study was conducted to determine if the conversion from free chlorine to chloramine disinfection was feasible for the water system. Technical aspects of chloramination were also addressed before the actual change took place on Nov. 5, 1984. This article recounts the issues that were evaluated prior to making the change to chloramines.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1985.tb05472.x

出版商:Wiley    

年代:1985

数据来源: WILEY

摘要:

This article presents the results of a survey conducted by AWWA's Disinfection Committee into the practice of chloramination in US states and territories, including the policies of state water supply regulatory agencies with regard to the use of chloramines.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1985.tb05473.x

出版商:Wiley    

年代:1985

数据来源: WILEY

摘要:

The Metropolitan Water District of Southern California recently changed its primary disinfectant from free chlorine to chloramines in order to help its member agencies control trihalomethanes (THMs). The effects of blending chloraminated and chlorinated waters were studied by developing blend‐residual curves to simulate the systems involved. Since these curves were found to compare well with the printouts of a computer model designed to estimate desirable blends, it was concluded that the computer model could be used to predict acceptable blends and to anticipate bacteriological, THM, and taste‐and‐odor problems, thus eliminating the need to determine each case experimentally.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1985.tb05474.x

出版商:Wiley    

年代:1985

数据来源: WILEY

摘要:

Monochloramine is becoming a popular alternative to chlorine for the disinfection of water supplies because it does not react with humic substances to form trihalomethanes. However, chloramines have recently been found to cause hemolytic anemia in patients undergoing kidney dialysis. A study of Urbana‐Champaign, Ill., tap water was carried out to determine the effects of particle size, contact time, and dissolved organic matter on carbon column effluent concentration when a typical influent monochloramine concentration was used. The resulting data allow a good estimate to be made of the best design for a carbon column, but until more data become available, dechlorination units that are being used for the removal of monochloramines should be carefully monitored to ensure that water of the desired quality is being produced.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1985.tb05475.x

出版商:Wiley    

年代:1985

数据来源: WILEY