A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Immobilized‐Cell‐Augmented Activated Sludge Process for Treating Wastewater Containing Hazardous Compounds
A novel bioaugmentation scheme called immobilized‐cell‐augmented activated sludge (ICAAS) was developed. Offline enricher reactors were used to maintain immobilized acclimated cells applied to augment completely mixed activated sludge (CMAS) treating a pentachlorophenol (PCP) pulse loading. Cellulose triacetate (CA) and powder activated carbon (PAC) combined with CA (PAC + CA) were the two media types used for entrapping the PCP‐degrading culture. With ICAAS at 5% by volume augmentation, PCP removal of 73.1 and 75.1% via biodegradation, volatilization, and adsorption onto suspended cells, entrapped cells, and media was achieved for the systems with CA and PAC + CA media, respectively, while PCP removal in a control CMAS, which had a comparable level of combined PCP adsorption onto suspended cells and volatilization as the ICAAS, was 48.7%. Results further showed that the immobilized cells retained their PCP‐degrading ability when they were fed with the inducer (PCP) once every 20 days.
Immobilized‐Cell‐Augmented Activated Sludge Process for Treating Wastewater Containing Hazardous Compounds
A novel bioaugmentation scheme called immobilized‐cell‐augmented activated sludge (ICAAS) was developed. Offline enricher reactors were used to maintain immobilized acclimated cells applied to augment completely mixed activated sludge (CMAS) treating a pentachlorophenol (PCP) pulse loading. Cellulose triacetate (CA) and powder activated carbon (PAC) combined with CA (PAC + CA) were the two media types used for entrapping the PCP‐degrading culture. With ICAAS at 5% by volume augmentation, PCP removal of 73.1 and 75.1% via biodegradation, volatilization, and adsorption onto suspended cells, entrapped cells, and media was achieved for the systems with CA and PAC + CA media, respectively, while PCP removal in a control CMAS, which had a comparable level of combined PCP adsorption onto suspended cells and volatilization as the ICAAS, was 48.7%. Results further showed that the immobilized cells retained their PCP‐degrading ability when they were fed with the inducer (PCP) once every 20 days.
Immobilized‐Cell‐Augmented Activated Sludge Process for Treating Wastewater Containing Hazardous Compounds
Jittawattanarat, Rungrod (author) / Kostarelos, Konstantinos (author) / Khan, Eakalak (author)
Water Environment Research ; 79 ; 461-471
2007-05-01
11 pages
Article (Journal)
Electronic Resource
English
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