首页>
外国专利>
Biological filter station for treatment of waste water and sewage has membranes supported by angled disks on rotating horizontal shaft with rising gas bubble stream to scour the membranes
Biological filter station for treatment of waste water and sewage has membranes supported by angled disks on rotating horizontal shaft with rising gas bubble stream to scour the membranes
The assembly for separating solids from a liquid by filtration, where active sludge is to be removed to give clean drinking water, has filter membranes acting as micro sieves, micro-filters or for ultra-filtration. The membranes are fitted so that their surfaces are each on flat disks (1) pitched at an angle. The disks, supporting the membranes, are mounted to a common horizontal shaft (3) with a pitch angle against the shaft axis. The shaft is rotated by a motor (M). A gas delivery system (5) is under the disks, to give a gas scouring action on the filter membranes. The disks (1) are pitched at an angle of 5-60 deg to their horizontal mounting shaft (3). Each disk (1) has a flat and serrated surface to support the filter material and collect the permeate which flows towards the disk center. The horizontal shaft (3) is hollow, as a flow channel for the permeate from the centers of each disk (1).
展开▼
