AWWA WQTC65838 PDF

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Modeling the Transport Behavior of Particles and Corrosion Products in Drinking Water Distribution Systems
Conference Proceeding by American Water Works Association, 11/01/2007

Document Format: PDF

Description

This study addresses the occurrence of discolored water at the customers tap due to particulate matter. Slaats et al. (2003)describes the problem and explains a method to investigate the fouling behavior of pipes indrinking water distribution systems. This study describes a new approach to modeling thebehavior of particles in water at a small scale pilot plant designed as a pipe loop. Study conclusions found that the common practice of using only one parameter to describe the mobilization of particles dependent on hydraulic conditions is insufficient. It is more accurate to assume the partial mobilization of sediment and attachments. Not all sediment is mobilized when a critical water shear stress is exceeded. The settling velocity of a particle in the pipe flow varies and depends on the height of the pipe cross section due to the changing influence of most forces. It is important to consider cohesion and adhesion due to the small particle sizes, thus influencing the settling and transport by the fact that most of the sediment does not settle but forms wall attachments. Includes 8 references, figures.

Product Details

Edition:
Vol. – No.
Published:
11/01/2007
Number of Pages:
10
File Size:
1 file , 800 KB
Note:
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