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Q14347 - INFO: CCPP

CCPP math toolbox equation returns a water stability index (Calcium Carbonate Precipitation Potential) given a pH, Alkalinity, Calcium, and Water Temperature (Deg C) in mg/L CaCO3.  CCPP is the calculated mass of calcium carbonate expected to precipitate or be dissolved by particular water.  Used (along with other corrosivity indexes such as LSI) to assist in chemical dosing to ensure water in the distribution system will not corrode metal or dissolve contrete pipes. 

Corrosivity State of Water CCPP mg/L CaCO3
Scaling (protective) >0
Passive 0 to -5
Midly Corrosive -5 to -10
Corrosive (aggresive) < -10

  

SYNTAX:

CCPP(pH, Alkalinity,Calcuim,DegC )
where :

pH : A variable reference (V) or constant for the pH
Alkalinity:  A variable reference (V) or constant for the Alkalinity (mg/L)
Calcium:  A variable reference (V) or constant for the Calcium (mg/L)
DegC:  A variable reference (V) or constant for the water temperature (deg C)

NOTES:

Values for pH can only be 6 to 10.  Values outside that range return no result. 


EXAMPLE: Calculate the CCPP at the Point of Entry

V5133 = CCPP(V5129,V5130,V5131,V5132)

where:

V5129 is POE pH [SU] 
V5130 is POE Alkalinity [mg/L]
V5131 is POE Calcium [mg/L CaCO3]
V5132 is POE Temperature [Deg C]

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Created on 11/6/2015 12:23 PM.
Last Modified on 11/6/2015 2:19 PM.
Last Modified by Scott Dorner.
Article has been viewed 2330 times.
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