摘要:

This column provides news briefs and vignettes of the water industry as of December 1963.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1963.tb01179.x

出版商:Wiley    

年代:1963

数据来源: WILEY

摘要:

This article begins by presenting a brief overview of the U.S. Public Health Service's (USPHS's) Research Information System. The complete cycle of the research information program is discussed including seven important steps: the use of information; the research itself; generation; collection; classification; storage; and, retrieval.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1963.tb01171.x

出版商:Wiley    

年代:1963

数据来源: WILEY

摘要:

This article presents a summary of the 1962 U.S. Public Health Service (USPHS) Inventory of Municipal Water Facilities in Communities of 25,000 or More. The inventory includes 781 communities of 25,000 or more served by water supply facilities, an increase of 153 communities, almost 25 per cent more than in 1960. The number of water supply facilities included in the inventory is 905, an increase of 199 from 1960.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1963.tb01172.x

出版商:Wiley    

年代:1963

数据来源: WILEY

摘要:

This article discusses the importance of public relations in the water industry, and presents a formula which is helpful in thinking about public relations, credited to Dan Forrestal, former president of the Public Relations Society of America. Requirements of a good public relations program are also provided.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1963.tb01173.x

出版商:Wiley    

年代:1963

数据来源: WILEY

摘要:

This article discusses a survey of 110 cities in the Pacific Northwest regarding policies for the extension of residential distribution mains. The particular policy followed is not as important as its equitable administration and equal treatment of all residential consumers. The survey results show average conditions throughout the Northwest, and cities and water utilities were categorized according to population served. In some instances, the data was also broken down by states. Efforts were made to show regional rather than local municipal conditions.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1963.tb01174.x

出版商:Wiley    

年代:1963

数据来源: WILEY

摘要:

This article begins with a brief discussion of the sources of pollution of Missouri River water. Several surveys done in 1950 are mentioned, along with the formation of the Missouri River Public Water Association in 1958. In the spring of 1960 a sample of raw and finished water was sent to the Illinois State Water Survey Laboratory, Urbana, Illinois, for chromatographic separation and identification of organic acids present during the spring runoff. The article discusses whether any of the organic acids present could be responsible for the taste and odor problems, whether treatment practices at Omaha, Nebraska, changed the acids, and whether those changes could cause the taste and odor problems that occured during that period.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1963.tb01175.x

出版商:Wiley    

年代:1963

数据来源: WILEY

摘要:

This article begins by providing a brief overview of the degradation of vulcanized natural rubber by microorganisms of the Streptomyces genus. A study of the degradation of rubber rings in the joints of water distribution pipe is discussed. Samples were obtained of deteriorated rings from water utilities in the Netherlands. The bacteriologic examination of the rings is described, and experimental results demonstrated that, without exception, the same species of Streptomyces was isolated. Two types of this species of Streptomyces were often found together: Type 1 first forms white and then pink colonies on glucose‐peptone agar; and, Type 2 forms smaller, round, and orange‐colored colonies. Whether these two types are two different species or just variations of the same species remains to be investigated. The article goes on to discuss pure‐culture tests, the effect of compression, the role of Streptomyces, tests of resistance to attack, and the significance of protein content.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1963.tb01176.x

出版商:Wiley    

年代:1963

数据来源: WILEY

摘要:

This article begins by presenting experimental work on the use of acid‐treated sodium silicate in coagulation. It was found that, in a series of tests on coagulation in an experimental filtration plant, acid‐treated sodium silicate used with aluminum sulfate hastened the rate of coagulation and the rate of settling in settling basins. The use of silicate decreased the amount of aluminum sulfate required and strengthened the coagulation to the extent that there was no danger of coagulated materials passing the filter beds. The article discusses the use of acid‐treated sodium silicate for aiding coagulation with aluminum sulfate for a period of a few weeks to about 3 months each year at the South District Filtration Plant, Chicago, Illinois.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1963.tb01177.x

出版商:Wiley    

年代:1963

数据来源: WILEY

摘要:

The objective of this study was to provide a comprehensive, integrated concept of the nature and interplay of capacity factors of the principal buffer systems indigenous to freshwaters. Fundamental acid‐base equilibria pertinent to natural waters were examined in detail, with particular emphasis on a rigorous quantitative interpretation of the CO2‐HC03‐‐C03‐system. A graphic method is presented of chemical equilibria. Conceptual and operational definitions of alkalinity and acidity, and some of the analytic implications of quantitative determinations of these parameters, are discussed. Finally, consideration was given to some of the practical processes that influence the pH and the pH buffer capacity of waters.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1963.tb01178.x

出版商:Wiley    

年代:1963

数据来源: WILEY