摘要:

Wet tapping is tapping a service line into a main that is flowing full under pressure. Methods of wet tapping and precautions which need to be observed are presented.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1978.tb01076.x

出版商:Wiley    

年代:1978

数据来源: WILEY

摘要:

The topics in this month's “Certification Corner” include weight of one liter of water, transpiration, pH of water, removal of iron and manganese from water, Asterionella, valves, formation of chloramines, the chemical used to reduce corrosiveness in water, and the primary purpose of grouting the casting of a well.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1978.tb01078.x

出版商:Wiley    

年代:1978

数据来源: WILEY

摘要:

The use of granular activated carbon (GAC) as the most probable technique for removing organic contaminants from water is discussed. There are various considerations if GAC is used. The cost of replacing sand filters with GAC, training people to handle the new filter process, and the testing of the raw water supply to determine the type and grade of GAC that will be needed are covered in this paper.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1978.tb01079.x

出版商:Wiley    

年代:1978

数据来源: WILEY

摘要:

This is a two page chart listing some common causes of and cures for pump trouble.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1978.tb01080.x

出版商:Wiley    

年代:1978

数据来源: WILEY

摘要:

Correct procedures for the safe handling of hammers in order to prevent injury are given.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1978.tb01082.x

出版商:Wiley    

年代:1978

数据来源: WILEY