摘要:

Proper disinfection of water mains will prevent health hazard to consumers. One way to disinfect mains is through chlorination. Chlorine comes in three forms, gas, calcium hypochlorite, and sodium hypochlorite. Since chlorine could be harmful, workers should be well aware of the safety precautions to use when handling chlorine. In order to assure proper cleaning of the mains the crews must be well trained and the type of chlorine used must be properly applied. The continuous flow method of chlorine application is covered.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1977.tb01026.x

出版商:Wiley    

年代:1977

数据来源: WILEY

摘要:

Featured in this month's “Gimmicks and Gadgets” is an idea to use naturally‐heated water to heat a water facility, and possibly local schools, in South Dakota.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1977.tb01028.x

出版商:Wiley    

年代:1977

数据来源: WILEY

摘要:

This survey is from a Johns‐Manville publication entitled “How to Evaluate Your Water Service.” This section contains questions pertaining to the financial capability of the utility and the plant personnel.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1977.tb01029.x

出版商:Wiley    

年代:1977

数据来源: WILEY

摘要:

A seventeen‐step procedure for hydrant maintenance and inspection is presented along with a sample hydrant record form.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1977.tb01030.x

出版商:Wiley    

年代:1977

数据来源: WILEY

摘要:

Among the topics in this month's “Certification Corner” are baffles and their uses, anaerobic bacteria, head loss in pipelines, and hydrogen sulfide in well water.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1977.tb01031.x

出版商:Wiley    

年代:1977

数据来源: WILEY

摘要:

Guidelines for dimensioning metric drawings, including dual dimensioning using metric and conventional measurements, millimeter versus meter drawings and number groupings, are presented.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1977.tb01032.x

出版商:Wiley    

年代:1977

数据来源: WILEY