Microalgae settling was evaluated in settling column tests with and
without flocculant addition. Firstly, a column test was performed without
flocculant (control). Afterwards, two tests per week (one for each
flocculant) were performed over 1 month, obtaining 4 replicates for
each flocculant.Mixed liquor turbidity varied over the experimental period,
average values of 294 and 378 NTU were obtained for Tanfloc and
Ecotan samples, respectively. As described in Section 2 Material and
methods, recovery percentages at different time intervals were calculated
from turbidity measurements before and after settling at different
times and column depths.
Microalgae settling was evaluated in settling column tests with andwithout flocculant addition. Firstly, a column test was performed withoutflocculant (control). Afterwards, two tests per week (one for eachflocculant) were performed over 1 month, obtaining 4 replicates foreach flocculant.Mixed liquor turbidity varied over the experimental period,average values of 294 and 378 NTU were obtained for Tanfloc andEcotan samples, respectively. As described in Section 2 Material andmethods, recovery percentages at different time intervals were calculatedfrom turbidity measurements before and after settling at differenttimes and column depths.
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