Patent ID: 8419949

Claim:
A method of treating a residential or industrial waste water comprising plastic wastes and plant wastes to separate the plastic wastes from the plant wastes, which comprises the steps of: (a) dewatering the residential or industrial waste water comprising the plastic wastes and the plant wastes; (b) subjecting the dewatered residential or industrial waste water comprising plastic wastes and plant wastes to a thermomechanical cell lysis carried out at a temperature between 65° C. and 120° C., to disrupt cells in the plant wastes, so that the plant wastes are selectively shredded and comminuted while the plastics wastes remain substantially uncomminuted; (c) further dewatering the dewatered residential or industrial waste water comprising substantially uncomminuted plastic wastes and comminuted plant wastes obtained according to step (b) to expel additional water to obtain a presscake comprising uncomminuted substantially plastic wastes having a heating value and comminuted plant wastes; and (d) sieving the presscake dewatered according to step (c) to separate the selectively comminuted plant wastes from the substantially uncomminuted plastic wastes having a heating value to obtain the comminuted plant wastes as a cell lysate having a heating value.