Bioaugmentation for nitrification at cold temperatures

Impact resistance of different factors on ammonia removal by heterotrophic nitrification–aerobic denitrification bacterium Aeromonas sp. HN-02

“…It was found that a 56% decrease of ammonia removal rate was obtained when the temperature drop from 20°C to 4°C. The h values of 1.088 was detected in suspended-growth system under low temperature shock (lower than 10°C) by Head and Oleszkiewicz (2004). It was obviously higher than the h value (1.0634) calculated with ammonia removal rate at 5°C in Fig.…”

Enhanced Biodegradability of Aerobic Sludge by Bioaugmentation for Pulping Effluent Treatment

“…However, many factors such as strain selection, microbial ecology, type of pollutant, as well as procedures of culture introduction, may affect the result of bioaugmentation or even lead to failure. Several successful studies on bioaugmentation were carried out in laboratorialscale (Head and Oleszkiewicz 2004;Wang et al 2002), however the full-scale wastewater treatment process has rarely been tried due to the risk of irrecoverable process failure by unexpected operating problems. For our research, the way in which the fullscale bioaugmentation will be applied in pulping effluents degradation process will be a focus of our future studies.…”

Pilot-scale verification of efficient nitrifier backseeding in a combined activated sludge-biofilm system

“…In the Bio-Augmentation Batch Enhanced Technology process (BABE) (Salem et al [17]), the activated sludge system is augmented by its natural nitrifier population enriched through nitrification of the sludge processing waste by part of the returned sludge. Head and Oleszkiewicz [7] investigated the effects of seeding Sequencing Batch Reactors (SBR) operating at low temperatures by nitrifiers cultivated at higher temperatures, in separate SBRs and observed that even at low temperatures (10 textdegree C) the required minimum SRT for nitrification could be considerably decreased through seeding.…”