[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

PHREEQ Use in Power Plant Chemistry



Can PHREEQC be used to predict speciation in power plant cooling towers at
various levels of evaporation? The towers run to saturation, typically, of
calcium carbonate, but other salts of magnesium, silica, iron, phosphorus,
etc. are possible and would limit the amount of water that could be
evaporated. 

I read in the manual that PHREEQC will not give a true "path" thermodynamic
answer in evaporation questions. But, it would seem that the program should
still be useful in a stepwise calculation of what happens as evaporation
progresses.

If PHREEQC can work in this application, can the effect of scale inhibitors
(phosphonates, acrylates, etc.) be modeled as well?

In some areas of the country the blowdown from the cooling tower is
processed in evaporators and mixed salt crystalizers to produce cake salt.
Can PHREEQC predict the speciation of the product salts?

Are there any references or papers that you know of that discuss using
PHREEQC in this manner?


Project Home Page
Complete Water Resources Division Software
USGS Home Page
Water Resources Division Home Page
NRP Home Page
Help Page
USGS Privacy Statement        Disclaimer

Please note that some U.S. Geological Survey (USGS) information accessed through this page may be preliminary in nature and presented prior to final review and approval by the Director of the USGS. This information is provided with the understanding that it is not guaranteed to be correct or complete and conclusions drawn from such information are the sole responsibility of the user.

Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government. 


The URL of this page is: http://wwwbrr.cr.usgs.gov/projects/GWC_coupled/phreeqc/mail/msg00103.html
Email:dlpark@usgs.gov
Last modified: $Date: 2005-09-13 21:04:21 -0600 (Tue, 13 Sep 2005) $
Visitor number 1326 since Jan 22, 1998.