Uso de pneu "picado" como meio suporte de leitos cultivados para o tratamento de esgoto sanitario oriundo de uma E.T.E. convencional

AUTOR(ES)
DATA DE PUBLICAÇÃO

2001

RESUMO

This work evaluated pricked tires as a medium for constructed wetlands, treating domestic wastewater. The experiment was conducted utilizing effluent of a Sewage Treatment Plant, assisting about 260 people. Two tanks with 10 m2 each, with dimensions: of 2 m wide, 5 m long and 1 m height were built above soil level using cement bricks. One of the tanks was filled out entirely with crushed stone (diameter 55 to 90 mm), while in the other tank the medium was pricked tires reaching the height of 0.80 m. Above the tires, a 0.10 m gravel layer to complete the total height (1 m) and avoid floating. The aquatic macrophytes utilized were from Typha species distributed uniformly over the beds. The following parameters were monitored: suspended solids, pH, biochemical oxygen demand, chemical oxygen demand, phosphorus, ammonia nitrogen, nitrate, total coliform, E. coli and turbidity. The results were submitted to a statistical analysis in order to verify if significant difference existed (to 1 % and 5% of significance) between the two treatments. The results demonstrate no significant differences for the parameters BOD, NH3, NH3-N, NH4+, P, PO4-, P2O5, total coliform, and E. coli. while for suspended solids, pH, NO3, NO3-N, turbidity, were found significant differences to 1% and 5% of significance. For COD was found significant difference to 5% of significance

ASSUNTO(S)

tire aguas residuais residuos industriais - aspectos ambientais aguas residuais - purificação - tratamento biologico solid waste biological treatment wastewater treatment

ACESSO AO ARTIGO

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