Dewatering system for sludge removal
OwnerJack R. Williamsinventor
Life of this patent
Estimating the term…
Abstract
A dewatering system for use in the treatment of waste water is disclosed which includes a tank, an inclined filter bed having a plurality of filter elements and components for inducing a flow of air through the filter bed to accelerate drying of the removed solids. Also disclosed are components for adjusting the angle of inclination of the filter bed and mechanical components for removing solids from the filter elements. In one embodiment, the filter bed is disposed within an upper unit mounted for rotation on the tank floor to facilitate cleaning of the filters. Adjusting the angle of inclination of the filter bed provides access from the frame, below, for cleaning the underside of the filter.
Claims21
A dewatering system for use in the treatment of waste water comprising a frame member:
- a tank adapted to receive waste water, the tank including a floor unit that receives water and an upper unit through which water passes and enters the floor unit, the upper unit being coupled to said floor unit and being pivotally mounted for rotation with respect to the floor unit between an operating position and an elevated position;
- a filter bed disposed within the upper unit and in a selected inclined operating position with respect to the horizontal for removing solids from the waste water as it is drawn downward through the bed by gravity, said filter bed having a lower side and an upper side;
- means for discharging waste water into the tank above the filter bed;
- and means including
- lifting means coupled to said tank for lifting said filter bed from said selected inclined operating position to said elevated position and separating the filter bed from said floor unit along at least a portion thereof to provide access to said lower side of said filter bed from said frame member for cleaning the filter bed from said lower side of said filter bed while simultaneously discharging solids from said upper side of the filter bed while said filter bed is in the elevated position.
A dewatering system for use in removing water from solids comprising:
- a frame member;
- a filter bed pivotally coupled to said frame member;
- a filter element positioned as a part of said filter bed, said filter element having a front surface and a back surface;
- a water inlet adjacent said filter bed, said water inlet being adapted to provide a flow of water containing solids to said filter bed;
- a pivotal connection mechanically coupling said filter bed to said frame member means including;
- a mechanical assembly coupled to said filter bed, including a support member for supporting said filter bed in generally a flat, inclined, operational position for removing said water from said solids and for alternatively supporting said filter bed in a generally raised, elevated, cleaning position spaced from the frame member and for providing acess to said back surface of said filter element from said frame member to facilitate the cleaning of said filter element from the back surface while said filter bed is coupled to said frame member in said raised position.
A method of dewatering comprising:
- introducing water to an upper surface of a filter bed, said water having solids therein, said filter bed being pivotally coupled to a frame, with a back surface of the filter bed facing the frame;
- passing water through said filter bed and removing solids from said water by passing it through said filter bed, said solids being retained within said filter bed;
- ceasing the flow of water through said filter bed;
- raising said filter bed to an elevated position at one end, placing it at a higher angle while said filter bed is coupled to said frame by pivoting said filter bed with respect to said frame and providing acess to a back surface of the filter bed from said frame for cleaning a surface not previously exposed;
- discharging solids from a front end of said filter bed while said filter bed is in said raised position to clean solids from said filter bed;
- lowering said filter bed to a lower angle while said filter bed is coupled to said frame by pivoting said filter bed with respect to said frame;
- and
- repeating said step of introducing water to an upper surface of said filter bed.
Dependencies are inferred from the claim text.