Patent ID: 7648638
Filing Date: 2010-01-19
Classification: B01D,B03D,C02F

Abstract:
1. A method of treating water or wastewater in a system including a reactor, a vertical flow channel disposed in the reactor, and a separator, comprising: a. adding a flocculant to the water or wastewater; b. directing the water or wastewater into an open upper end of the flow channel immersed in the water or wastewater in the reactor, down through the flow channel, out a lower end of the flow channel and upwardly outside of the flow channel and through the reactor; c. continuously recycling the water or wastewater by directing the water or wastewater into the upper open end of the flow channel, downwardly through the flow channel, out the lower end of the flow channel, upwardly outside of the flow channel and through the reactor, and back into the open upper end of the flow channel; d. mixing the flocculant and water or wastewater as the water or wastewater passes downwardly through the flow channel and wherein the mixing of the flocculant with the water or wastewater forms a flocculated mixture including flocs; and e directing at least some of the flocculated mixture to the separator and separating clarified effluent from sludge which contains the flocs.