17.01.2015 Views

GPS-X Technical Reference

GPS-X Technical Reference

GPS-X Technical Reference

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Other Models 306<br />

Following mass balance equations may be written for different phosphorus components<br />

across the In-line Chemical Dosing object.<br />

Mass Balance Equation for Me(OH) 3 Concentration<br />

Equation 11.2<br />

Mass Balance Equation for Soluble Phosphorus Concentration<br />

Equation 11.3<br />

Mass Balance Equation for MePO 4 Concentration<br />

Equation 11.4<br />

The equation describing the relationship among the metal ion, phosphate ion and the<br />

solubility product is as below:<br />

Equation 11.5<br />

where:<br />

X me(oh)3,o = metal hydroxide concentration at outlet, gMe/m 3<br />

X me(oh)3,in = metal hydroxide concentration at inlet, gMe /m 3<br />

P me = metal dose, gMe /m 3<br />

a<br />

= stoichiometry conversion factor, gMe(OH) 3 /g Me<br />

X mepo4,formed = concentration of formed precipitate, g MePO 4/m 3<br />

b = stoichiometry conversion factor, gMe(OH) 3/ g MePO 4<br />

c = stoichiometry conversion factor, g P/g MePO 4<br />

<br />

= dissociation factor for estimating PO 4<br />

3-<br />

from total<br />

orthophosphate concentration<br />

<strong>GPS</strong>-X <strong>Technical</strong> <strong>Reference</strong>

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!