The Philippine Journal of Science 



Table 7. — Results of analyses and computations (st 



xtion 7) 



(iples, 14.] 





Reacting™,.. 





£S£ 



Sodium (Na). 



« 



fuT 



Per cent. 



| 





Calcium (Ca) 



Magnesium (Mg) .... 





Sulphate (SCh) .. 





Nitrate (NOs) 



Bicarbonate (HCCh) 



Concentration value 





-iZL 



100.00 



Silica (SiO,) . 



= ¥ 











G "3£li«.._ 















- 











P _ 





J»fL 



Secondary alkalinity 



::,.:,;:::::::::: 



"lo^oT 



Forwwto 5.-Scale formation. 

 (a) Total scale. 



Sc - 0.001 Sm • + 0.001 Cm » + 0.036 rFe + 0.017 rAl + 0? 

 rMg -f 0.06 rCa. 



%rLTscZ Qed thG "^ ° f W0 3 + rHC0 3 + rS0 4 ). 



Hs = 0.001 SiO a + 0.02 rMg + 0.068 (rCl + rSO - rNa 



-rK). 



Coefficient of scale hardness h = H? 

 Sc' 



9 Suspended matter. » ColloM„i .*.— . 



