摘要:

Various methods of sludge thickening are discussed including the use of settling basins or tanks, tube settlers and lamella settlers, stirrers, centrifuges, and settling aids. Also presented is a brief discussion of dewatering and the processes to accomplish this, such as lagooning, drying beds, vacuum filters, centrifuges, filter press, freezing and thawing.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1977.tb00926.x

出版商:Wiley    

年代:1977

数据来源: WILEY

摘要:

The topics of disc type meters, water contamination, action following various total chlorine residual situations, and repeated leakage failures in metal distribution pipeline are included in this month's “Certification Corner”.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1977.tb00928.x

出版商:Wiley    

年代:1977

数据来源: WILEY

摘要:

Different types of plant and equipment corrosion are discussed and ways of prevention suggested. Wet atmospheric corrosion, direct chemical attack and concentration‐cell corrosion are covered.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1977.tb00929.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.” The questions on this section of the survey deal with the evaluation of source quantity and source bacteriological quality.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1977.tb00930.x

出版商:Wiley    

年代:1977

数据来源: WILEY

摘要:

AWWA offers many sources of information to operators besides Opflow, including reference books, manuals, handbooks, proceedings and standards.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1977.tb00932.x

出版商:Wiley    

年代:1977

数据来源: WILEY