Estrutura da comunidade microbiana (algas e bactérias) em um sistema de lagoas de estabilização em duas escalas temporais: nictemeral e sazonal / Microbial structure (algae and bacteria) from a wastewater stabilization ponds system in two different temporal scale: nictemeral and seasonal

AUTOR(ES)
DATA DE PUBLICAÇÃO

2005

RESUMO

The study of the microbial community (algae and bacteria) that participates of the organic matter stabilization process in the effluent sanitary it is important for the best knowledge of the types of the biological treatment systems. The evaluation of the dynamics of the algae and bacteria in the Australian wastewater stabilization ponds of the Novo Horizonte city (SP) was the main objective of this research. For this evaluation, the densities of these organisms (direct counting) and the primary production rate were determined (measured for the production of oxygen dissolved) and compared to the abiotics conditions, in nictemeral scale (it collects to each 6 hours), seasonal (four periods of the year), longitudinal (5 stations through the system) and vertical spatial (three depths in the facultative ponds). The results indicated seasonal differences in the final effluent quality and in the ponds performance. Although these differences, the final effluent can be considered as potentially eutrophic according to the organic matter and total phosphorus concentrations. The facultative ponds showed an anaerobic condition on the great part of the water column, which contributed with the low efficiency of the system

ASSUNTO(S)

comunidade microbiana (algas e bactérias) seasonal and nictemeral cycles microbial community (algae and bacteria) ciclos nictemerais e sazonais wastewater stabilization ponds lagoas de estabilização

ACESSO AO ARTIGO

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