Regarding nitrogen, the plant was able to remove
87.5 5.3% of TKN with a residual concentration in the
effluent of 4.9 2.4 mg/l, indicating that a stable nitrification
process was established, with average concentrations of oxidised
nitrogen in the effluent of 7.6 4.5 mg/l, contrary to
what usually detected in biological systems treating textile
wastewater, where the nitrifying biomass activity is usually
reduced because of the many textile inhibitory compounds
(Rozzi et al., 1999; Bortone et al., 1997
Regarding nitrogen, the plant was able to remove87.5 5.3% of TKN with a residual concentration in theeffluent of 4.9 2.4 mg/l, indicating that a stable nitrificationprocess was established, with average concentrations of oxidisednitrogen in the effluent of 7.6 4.5 mg/l, contrary towhat usually detected in biological systems treating textilewastewater, where the nitrifying biomass activity is usuallyreduced because of the many textile inhibitory compounds(Rozzi et al., 1999; Bortone et al., 1997
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