Improvement in Ammonium Removal Efficiency in Wastewater Treatment by Mixed Culture of Alcaligenes faecalis No. 4 and L1(ENVIRONMENTAL BIOTECHNOLOGY)

概要

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To improve ammonium removal efficiency in wastewater treatment, a mixed culture of Alcali-genes faecalis no. 4 and its mutant L1, both of which have heterotrophic nitrification and aerobic denitrification abilities, was performed. In a batch culture, no. 4 has a higher denitrification ability than L1, but its ammonium removal rate was lower. In a mixed continuous culture in the ammonium loading range of 750 to 3500mg-N/l/d, the average ammonium removal rate and the average denitrification ratio were 61mg-N/l/h and 31%, respectively. In the mixed culture, the ammonium removal rate was twofold higher than that in a single culture of no. 4, the rate was similar to that in a single culture of L1, and the denitrification ratio was very high compared with that in the single culture of L1.
社団法人日本生物工学会の論文
2007-01-25