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Table 4

Average statistics of the particle size distribution in activated sludge samples by Mastersizer 2000 equipment

Percentile (th)ED (μm)
WASRCSPTS
Minimum 1.44 1.09 1.09 
10 percentile 33.75 12.82 10.55 
Median 117.34 43.54 32.54 
90 percentile 232.32 112.21 82.55 
Maximum 416.86 630.95 239.88 
Percentile (th)ED (μm)
WASRCSPTS
Minimum 1.44 1.09 1.09 
10 percentile 33.75 12.82 10.55 
Median 117.34 43.54 32.54 
90 percentile 232.32 112.21 82.55 
Maximum 416.86 630.95 239.88 

ED, equivalent diameter; WAS, waste activated sludge; RCS, recirculated sludge; PTS, pre-treated sludge.

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