Page History

...

An alum dose of 65 mg/L is considered to be an over dose. At this point in time, only the data for the Floc blanket on high has been collected.a slight overdose. Image Modified
Figure 1: Effluent Turbidity vs. Time, Floc Blanket on Low, Alum dose = 65 mg/L
Image Removed
Image Added
Figure 2: Effluent Turbidity vs. Time, Flock Blanket on High, Alum dose = 65 mg/L

Conclusions

For the Floc Blanket floc blanket at both the lower and higher levels, the capture velocity of .057 058 mm/s produces a lower effluent turbidity than the Vc = .116 mm/s, and Vc = .174 produces a higher effluent turbidity than Vc = .116 mm/s, which is expected.  However, Vc = .231 mm/s produces a lower effluent turbidity than Vc = .174 mm/s.  This is possibly because of not consistent with what should have happened, and cannot be explained by floc particles rolling up the settler tube settler... FIXinto the effluent.