Membrane and Desalination Technologies - TCE Moodle Website

186 N.K. Shammas and L.K. Wang
Maximum feed concentration:
Cf max ¼ð3:16 10 6 Þ DL; From ð4Þ
Cf max ¼ 3:16 10 6
2 particles=L;
Cf max ¼ 6:32 10 4 particles=L: (4Þ
Select a feed challenge particle concentration between the minimum (2 10 4 particles/L)
and the maximum (6.32 10 6 particles/L). Arbitrarily:
Ctest ¼ 5 10 4 particles=L:
Step 3: Determine the total challenge particulate population required for the test solution.
TCCP ¼ CtestVtest; From ð6Þ (6Þ
where Ctest =5 10 4 particles/L (as calculated in step 2 above), Vtest = 6,070 L (as calculated
in step 1 above)
TCPP ¼ 5 10 4 particles=L 6; 070 L;
TCCP ¼ 3:04 10 8 particles:
Step 4: Determine the challenge particulate stock solution concentration using Eq. (7).
Css ¼ TCPP=Vss; From ð7Þ (7Þ
where TCPP = 3.04 10 8 particles (as calculated in step 3 above), Vss = ? (to be determined).
Select a stock solution volume that is between 0.5 and 2% of the total test solution volume
of 6,07 L (as determined in step 1 above). Thus:
Vss = 100 L arbitrary selection
Substituting values:
ð0:005 6; 070LÞ