Graf one2clean+ - Page 26

7. Operation and maintenance
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Figure 7: Sludge volume measurement with undiluted aerated sludge sample
Figure 8: Sludge volume measurement with 1+2 diluted aerated sludge sample
1000 ml
< 250 ml
30 min
670 ml water
from PN
330 ml
aerated sludge
< 233 ml (dilution factor of 3)
30 min