K. Watanabe et al., RESPONSES OF ACTIVATED-SLUDGE TO AN INCREASE IN PHENOL LOADING, Journal of fermentation and bioengineering, 82(5), 1996, pp. 522-524
The limit of phenol-loading rate for an activated-sludge process was p
redicted to be 4 g/l, d, based on kinetic data for the phenol-oxygenat
ing activity of activated sludge treating phenol at a loading rate of
0.3 g/l, d. However, the activated-sludge process broke down 5 d after
increasing the loading rate from 0.3 to 2.0 g/l, d. One day before th
e breakdown, the phenol-oxygenating activity of the activated sludge s
uddenly decreased, coupled with the occurrence of DOC (dissolved organ
ic carbon), suggesting that these events may have caused the breakdown
.