Water treatment method comprising a step of quick decantation followed by a filtration step directly into micro membranes or ultrafiltration, and corresponding device

摘要

Process for treating water comprising a liquid-solid by decantation with heavy floc separation step followed by at least one filtration step conducted in a different reactor from that in which said separation step is performed, wherein said separating step by decantation with heavy flocs liquid-solid it is performed with recirculation of sludge and a surface speed exceeding 15 m / h, said step directly through at least one microfiltration membrane or ultrafiltration, not performing any filtration through inert granular bed water up stage microfiltration or ultrafiltration.