摘要:

The disposal of sludge is becoming a problem for many water utilities. Clarification with organic polymers is one way to reduce the amount of sludge produced. Several methods for disposal of sludge are also discussed, including sludge lagoons, landfills, wastewater systems, and incineration. In addition to polymer use, alum or sodium aluminate recovery and freezing and thawing may help reduce the volume of sludge produced.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1979.tb01133.x

出版商:Wiley    

年代:1979

数据来源: WILEY

摘要:

The experience of two operators using a propane gas torch to thaw frozen water meters is described. The use of the torch caused the water meter to explode, injuring both men. This procedure is not recommended.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1979.tb01134.x

出版商:Wiley    

年代:1979

数据来源: WILEY

摘要:

Some common problems associated with sand filters and various suggestions for keeping filters operating properly are discussed. Among the problems which can occur are loss of head, algae, backwashing, mudballs, air binding and loss of sand.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1979.tb01135.x

出版商:Wiley    

年代:1979

数据来源: WILEY

摘要:

This article is a water utility superintendent's account of problems encountered during two severe snow storms when electrical power to his area was disrupted.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1979.tb01136.x

出版商:Wiley    

年代:1979

数据来源: WILEY

摘要:

With the industry change in the amount of chlorine in calcium hypochlorite, Opflow stresses the need to read the label to prevent any injury or accident from occurring.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1979.tb01138.x

出版商:Wiley    

年代:1979

数据来源: WILEY

摘要:

Featured in this month's “Gimmicks and Gadgets” is a heat gun for thawing frozen meters and pipes.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1979.tb01139.x

出版商:Wiley    

年代:1979

数据来源: WILEY