WaterCycle Rx

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EDITIONS

Basic Edition

scale formation modeling

thorough, printable reports

creates 2D & 3D graphs

Salesman Edition

scale formation modeling

thorough, printable reports

creates 2D & 3D graphs

+ adds the ability to model inhibitor dosages (reads product files (*.prd)

model corrosion (1010 carbon steel)

Product Manager

scale formation modeling

thorough, printable reports

creates 2D & 3D graphs

models inhibitor dosages (reads product files (*.prd)

models corrosion (1010 carbon steel)

+ adds the ability to input inhibitor products and blends, using included inhibitor model files.

creates product files (*.prd) - usable with salesman editions

Laboratory Edition

scale formation modeling

thorough, printable reports

creates 2D & 3D graphs

models inhibitor dosages (reads product files (*.prd)

models corrosion (1010 carbon steel)

input inhibitor products and blends, using included inhibitor model files.

creates product files (*.prd) - usable with salesman editions

+ adds the ability to create inhibitor models from field and laboratory data (for incorporation into product files)

creates custom corrosion models from field and lab data

WaterCycle Rx is powered by French Creek's advanced ion association model.

The model goes easily beyond the simple indices like Ryznar and Langelier, which are based on total analytical values.  The simple indices provide an indicator of scale potential, but lack accuracy due to their use of total analytical values for reactants.

They ignore the reduced availability of ions such as calcium which occurs due to association with sulfate and other ions. The simple indices assume that all ions in a water analysis are free and available as a reactant for scale forming equilibria.

For example, the simple indices assume that all calcium is free. Even in low ionic strength waters, a portion of the analytical value for calcium will be associated with ions such as sulfate, bicarbonate, and carbonate (if present).

This leads to over-prediction of the scaling tendency of a water in high ionic strength waters. The impact of these "common ion" effects can be negligible in low ionic strength waters. They can lead to errors an order of magnitude high in high ionic strength brines. Table 1 outlines some of the ion associations which might be encountered in natural waters.

Table 1: Example Ion Pairs Used To Estimate Free Ion Concentrations

CALCIUM  
[Calcium] = [Ca+II] + [CaSO4] + [CaHCO3+I] + [CaCO3] + [Ca(OH)+I]
  + [CaHPO4] + [CaPO4-I] + [CaH2PO4+I]
MAGNESIUM  
[Magnesium] = [Mg+II] + [MgSO4] + [MgHCO3+I] + [MgCO3] + [Mg(OH)+I]
  + [MgHPO4] + [MgPO4-I]+[MgH2PO4+I]+[MgF+I]
BARIUM  
 [Barium] = [Ba+II] + [BaSO4] + [BaHCO3+I] + [BaCO3] + [Ba(OH)+I]
STRONTIUM  
 [Strontium] = [Sr+II] + [SrSO4] + [SrHCO3+I] + [SrCO3] + [Sr(OH)+I]
SODIUM  
[Sodium] = [Sr+II] + [SrSO4] + [SrHCO3+I] + [SrCO3] + [Sr(OH)+I]
POTASSIUM  
[Potassium] = [K+I]+[KSO4-I] + [KHPO4-I] + [KCl]
IRON  
[Iron] = [Fe+II] + [Fe+III] + [Fe(OH)+I] + [Fe(OH)+II] + [Fe(OH)3-I]
  + [FeHPO4+I] + [FeHPO4] + [FeCl+II] + [FeCl2+I] + [FeCl3]
  + [FeSO4] + [FeSO4+I] + [FeH2PO4+I] + [Fe(OH)2+I] + [Fe(OH)3]
  + [Fe(OH)4-I] + [Fe(OH)2] + [FeH2PO4+II]
ALUMINUM  
[Aluminum] = [Al+III] + [Al(OH)+II] + [Al(OH)2+I] + [Al(OH)4-I] + [AlF+II] + [AlF2+I]

 

TECH PAPERS

Water Treatment Rules of Thumb

Optimizing Inhibitor Blends

The Application of Ion Association Model Saturation Indices to Water Treatment Problem Solving

More Papers

TESTIMONIALS

"WaterCycle is the only tool of its kind."
- John Zibrida, Zibex Inc.

"I am a firm believer in WaterCycle."
- Vice President, a top three major water treatment service company

"Whether presenting a bid on a Nuclear plant or HVAC system, the reports are thorough and get noticed."
- Proprietor, private water treatment service company