MOREIRA, K. J. B.; http://lattes.cnpq.br/4007243945635659; MOREIRA, Kaio José Belém.
Resumo:
Water is one of the most important assets for the maintenance of life on the planet
and its volume is constant, but with increasing population, its consumption and
degradation are accentuated. Thus, it is necessary the rational use of water,
encouraging the preservation of water bodies and the use of tools for treatment. In
urban centers, weirs are contaminated by domestic and industrial sewage, making
drinking water impossible, causing bad smell, disease vectors, among others. These
releases contain minerals, among them, phosphorus, which favors the reproduction
of algae and the increase of this living being is responsible for the eutrophication of
water bodies. An economical and efficient solution for the recovery of these dams is
the use of phytoremediation systems, such as floating gardens. This work evaluates
the structural and remedial performance of gardens, based on the concentrations of
chlorophyll-a and total phosphorus indicators. The work was divided into three
stages, with a gradual increase in the coverage area of the gardens. The gardens
were initially made of bamboo, but difficulties in assembling and floating were
observed, and they had to be replaced by pallet gardens with pet bottles. The
efficiency of these gardens was proven by decreasing the concentrations of total
phosphorus and chlorophyll-a indicators. The last stage presented an average
phosphorus of 5.1 mg / L, higher than the last collection of 4.7 mg / L, while
chlorophyll-a had its indicator starting at 432 μg / L and ending at 414 μg. / L. Both
indicators show concentration reductions that consequently cause improvement of
the water body.
