Patent ID: 6099743
Filing Date: 2000-08-08
Classification: B01D

Abstract:
A method of removing sludge from waste water by flocculation, comprising the steps of:a) forcing a flow of sludge containing waste water to abruptly change direction a number of times in succession to form whirls that create an optimum velocity for formation of sludge flocs;b) directing the waste water flow into a basin at a decreased flow rate which is sufficient to form whirls and to form sludge flocs along a circular flow path in the basin to facilitate sedimentation of the sludge flocs for collection and removal at a lower portion of the basin and movement of sludge depleted water away from the sludge flocs toward an upper portion of the basin for removal;c) removing the sludge flocs from the lower portion of the basin; andd) removing the sludge-depleted water from the upper portion of the basin.