摘要:

The chairman of AWWA's Disinfection Com. recommends that changes in the physical as well as the philosophical aspects of disinfection be instituted in order to achieve totally acceptable drinking water.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1974.tb02125.x

出版商:Wiley    

年代:1974

数据来源: WILEY

摘要:

In its various compounds, chlorine is an important disinfectant for water supplies. This article gives a brief history of its use, compares its effectiveness with the other halogens, and describes how it can be put to greatest advantage in the disinfecting process.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1974.tb02126.x

出版商:Wiley    

年代:1974

数据来源: WILEY

摘要:

Knowledge that modern man has acquired within the past 120 years concerning viruses has not guaranteed their complete elimination in the water supply. To combat the seemingly ever‐present contaminants, it is suggested that treatment‐plant operators adapt a more thorough disinfection program.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1974.tb02127.x

出版商:Wiley    

年代:1974

数据来源: WILEY

摘要:

An advanced waste‐treatment plant operated by the South Lake Tahoe Public Util. Dist. has been conducting research to improve viral‐inactivation processes. More research and professional awareness will be necessary if the industry is to continue improving the design and operation of water ‐ and wastewater treatment plants for better virus control.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1974.tb02128.x

出版商:Wiley    

年代:1974

数据来源: WILEY

摘要:

The national media have reported that the chlorination of water during treatment is responsible for the formation of potentially harmful chlorinated organic materials—notably chloroform—in the nation's water supplies. The following report by three research scientists from the Natl. Envir. Res. Ctr. of EPA describes that agency's research concerning these organohalides. The report concludes that the number of organohalides formed during the chlorination process does not constitute any immediate threat to the public health or welfare, but that more research into possible long‐term effects is warranted.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1974.tb02129.x

出版商:Wiley    

年代:1974

数据来源: WILEY

摘要:

Virus‐free drinking water from treatment plants does not exist. Furthermore, too little attention has been devoted toward its attainment. The recommendation has been made, therefore, that national health standards be drafted and imposed to help reduce the possible virus hazard of surface waters.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1974.tb02130.x

出版商:Wiley    

年代:1974

数据来源: WILEY

摘要:

Chlorination and conventional water‐treatment processes do not remove viruses from water supplies adequately. It is imperative that other methods be considered for purification of water supplies. One alternative is the removal of viruses by way of chemical coagulation and flocculation. This article discloses the results of a study involving chemical coagulation as a means of virus removal.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1974.tb02131.x

出版商:Wiley    

年代:1974

数据来源: WILEY

摘要:

Ground water that is obtained from a deep‐well source seldom contains many bacteria or contaminants. Adding chlorine to relatively pure ground water produces an immediate, noticeable change in taste and odor qualities. Chlorine dioxide, however, has been shown to yield a chlorine residual that is hardly noticeable through taste or odor, yet maintains USPHS standards.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1974.tb02132.x

出版商:Wiley    

年代:1974

数据来源: WILEY

摘要:

Since 1900 ozone has been used quite extensively as an oxidant and disinfectant in European waters. Because of the expense and other problems involved with using ozonators, ozone has not been favorably received in the US. Recently, however, technologists have discovered methods for controlling or eliminating a majority of the problems; moreover, water‐treatment researchers have found that ozone possesses additional favorable characteristics other than a pleasant odor.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1974.tb02133.x

出版商:Wiley    

年代:1974

数据来源: WILEY

摘要:

Although chlorine is the most widely used agent for disinfecting water, its use presents problems because of its relatively low effectiveness as a virucide and because of potentially toxic compounds that may be formed. Ozone is shown to have a much more rapid virucidal effect and may soon find its place in treating water and wastewater, alone or in combination with chlorine.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1974.tb02134.x

出版商:Wiley    

年代:1974

数据来源: WILEY