SYSTEM FOR PURIFYING POLLUTED WATER AND PURIFICATION METHOD

摘要

It comprises at least one first lower main deposit (1 ) arranged at a lower level and at least one second upper main deposit (2) arranged at an upper level, both containing polluted water to be purified, while at the same time the bottom of the large area main deposits (1 -2) are communicated with each other through at least one intermediate pipe (3) through which the polluted water is circulated in both directions successively and alternatively under turbulent regime. From the bottom of the main deposits (1 -2) the pollutants will be removed or purged to a cavity (9) that receives part of the water together with a high concentration of pollutants decanted and precipitated at the bottom of said main deposits (1 -2), said pollutants being treated and separated in that cavity (9).