Ammonia oxidation and the corresponding bacterial communities in two overland flow areas treating landfill leachate or wastewater
2011 (English)In: Overland Flow and Surface Runoff / [ed] Tommy S W Wong, Nova Science Publishers, Inc., 2011, 346- p.Chapter in book (Refereed)
A high diversity of ammonium oxidising bacteria (AOB) has been observed in overland flow areas (OFA) treating ammonia-rich landfill leachate. The current section aimed to explore if treatment OFAs in general supports more diverse AOB communities than conventional treatment systems, or if it is a result of effluent composition. The potential ammonium oxidation and the AOB community composition were studied during three seasons in an OFA where one part received wastewater and the other landfill leachate. The AOB communities were investigated using group-specific PCR primers targeting the 16S rRNA gene, and analysed by DGGE and nucleotide sequencing. The potential ammonia oxidation, studied by short-time slurry incubation, was higher in the landfill OFA than in the wastewater area and highest in the litter layer. Higher activity correlated with the appearance of Nitrosomonas sp. belonging to cluster 7. Both overland flow areas supported a more diverse AOB community than in common wastewater treatment plants. Fifteen different AOB sequences were detected, but only three were observed in both OFAs, pointing to the impact of the effluent quality and/or the hydraulic load. The wastewater OFA, which received a higher load of effluents with 5-10 times lower ammonia concentrations, was dominated by AOB populations that are usually found in less favourable conditions.
Place, publisher, year, edition, pages
Nova Science Publishers, Inc., 2011. 346- p.
Runoff -- Mathematical models, Streamflow -- Mathematical models, Frictional resistance (Hydrodynamics), ´Water Pollution, Nitrifying bacteria, SCIENCE / Earth Sciences / Hydrology, SCIENCE / Earth Sciences / Hydrology
IdentifiersURN: urn:nbn:se:liu:diva-17922ISBN: 978-1-61122-868-7OAI: oai:DiVA.org:liu-17922DiVA: diva2:212894