Patent ID: 8246822

Claim:
An apparatus for treating waste water, the apparatus comprising: a mixing tube arranged for receiving the waste water therethrough from an inlet to an outlet; a plurality of injection members, each arranged for injecting a selected quantity of a selected treatment chemical for mixing with the waste water in the mixing tube for causing flocculation of contaminants in the waste water; a plurality of mixing members supported in the mixing tube and arranged for mixing the treatment chemicals into the waste water in the mixing tube; a separating chamber connected to the outlet of the mixing tube so as to be arranged for receiving the waste water and the treatment chemicals mixed therein and being arranged for separating the flocculated contaminants to supply clarified water at an outlet of the separating chamber; an injection tube including a carrier fluid received therein and being in communication with the mixing tube upstream from the mixing members; the injection members being supported at spaced positions along the injection tube in communication therewith so as to be adapted to sequentially inject the treatment chemicals into the carrier fluid in the injection tube prior to communication with the wastewater in the mixing tube; and a plurality of auxiliary mixing members supported in the injection tube and adapted to sequentially mix the treatment chemicals injected by the injection members in the carrier fluid prior to mixing with the waste water in the mixing tube.