Design of flocculating baffled channel
Article Abstract:
The research study regarding flocculating baffled channel by Prabhata K. Swamee was criticized. It was stressed that the concept of G-value or the root-mean-square velocity gradient was not correctly applied in the flocculation and floc breakup, mixing, induced circulation in channels, short-circuiting in tanks and cleansing of filter media during backwashing. Since the G-value has limited application in environmental engineering, improper use could result in inadequate and expensive designs.
Publication Name: Journal of Environmental Engineering
Subject: Environmental issues
ISSN: 0733-9372
Year: 1997
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Type II sedimentation: removal efficiency from column-settling tests
Article Abstract:
Two comments and a reply to the comments on the removal efficiency from column-settling tests on type II sedimentation is presented. The comments are divided into two camps. The first comment disagrees with the form of the equation used to calculate the removal efficency. The second comment reformulates the formula more elegantly. The reply criticizes the reformulation of the first comment and acknowledges the elegance of the second comment's remodeling.
Publication Name: Journal of Environmental Engineering
Subject: Environmental issues
ISSN: 0733-9372
Year: 1993
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Hydraulic residence time of CSTRs under unsteady-state condition
Article Abstract:
The differential equation of the hydraulic residence time of a continuously stirred tank reactor (CSTR) operating under steady-state conditions can be extended to determine the time rate of change of the hydraulic residence time of a CSTR with regards to the changing inflow rate, volume, and the outflow rate. Equations show that the inflow and outflow rates affect the rate of change of mean hydraulic residence time.
Publication Name: Journal of Environmental Engineering
Subject: Environmental issues
ISSN: 0733-9372
Year: 1996
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