MEMBRANE STATION WASTE TREATMENT PROCESS

摘要

The invention relates to a water treatment process comprising a first pre-treatment step which produces pretreated water and sludge, wherein said pretreated water undergoes at least one filtration step, at least one of which is a membrane filtration step, and wherein said filtration step produces waste, characterized in that said waste derived from said membrane filtration step undergoes a treatment phase which includes at least one coagulation-flocculation step followed by a second decanting step which produces sludge, wherein said coagulation-flocculation step is preceded by at least one step of adsorption onto said sludge derived from the pretreatment or the decanting step, wherein said adsorption step is aimed at removing the phosphonates contained in said water derived from said membrane filtration step.