Dinâmica e sazonalidade das variáveis físico-químicas e biológicas de uma lagoa facultativa

Resumo

This research had as main objective to investigate the involved processes in facultative pond efficiency of A module in Trindade WWTP, a period of six months with seasonal differences. The samples were collected at inlet and outlet of pond, also on the surface, at different depths. Studies of profile were made from physico-chemical and biological variables. It was also made a principal component analysis, to verify the efficiency of BOD and nutrients removal by phytoplankton. The pond showed undergoes influence by seasonality of region. It was recorded DO profile of type clinograde, and thermal stratification in three months of collect. In two consecutive periods, were registered very low concentrations of DO (<1.0 mg.L-1). The principal component analysis showed that variations of the phytoplankton community had a direct influence of pH, CND, and possibly with HDT. This process was correlated with removal efficiency of BOD (r=0.85) and orthophosphate (r=0.98). The ammonia removal was associated with temperature.

Descrição

Palavras-chave

Tratamento de esgoto, Fitoplâncton, Remoção de nutrientes, Lagoa facultativa, Nutrients removal, Phytoplankton, Wastewater treatment, Facultative pond

Citação

D’ALESSANDRO, Emmanuel Bezerra; SAAVEDRA, Nora Kátia; SANTIAGO, Mariângela Fontes; SILVA, Maura Francisca da. Dinâmica e sazonalidade das variáveis físico-químicas e biológicas de uma lagoa facultativa. Revista Eletrônica de Engenharia Civil, Goiânia, v. 9, n. 2, 2014. Disponível em: <https://www.revistas.ufg.br/reec/article/view/29447/17605>