Isolation and screening of nitrifying bacteria for water treatment in aquaculture

Abstract

In this study, we have isolated and selected three nitrifying bacteria (AO10, NO2và NO6) that have high potential for application in aquaculture water treatment. The above mentioned nitrifying bacteria were isolated from fifteen aqua-culturing water samples of white shrimp and catfish ponds. In three selected strains, two of them AO10 and NO2 are Gram-negative rod bacteria, NO6 are Gram-positive rod bacteria, that have characteristics similar to group of heterotrophic nitrifying bacteria, belong to the genus Bacillus.

Keywords

• vi khuẩn nitrat hóa
• vi khuẩn oxy hóa nitrit
• vi khuẩn oxy hóa amon
• nuôi trồng thủy sản.