Methods and Apparatus for Solid Liquid Separation
AssigneeShanghai YuanQing Environmental Engineering Ltd
InventorNengqiang Ge
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Abstract
Described herein are methods and apparatus for solid-liquid separation with high efficiency, especially in treating spent filter backwash and sedimentation tank sludge produced in the water treatment process. It combines and applies gravity, electromagnetic force, dynamic filtration, and gravity condensation, magnetic and gravitational compression in one integrated device that produces high quality effluent water (less than 10 ppm suspended solid) and highly condensed sludge (less than 94-96% water content).
Claims7
A solid-liquid separation tower system comprising:
- a solid-liquid separation tower comprising a dome shape cover, a straight cylinder shaped body, and a cone shape bottom, said solid-liquid separation tower connected to an external high voltage electrostatic generator;
- a draft tube within said solid-liquid separation tower;
- and
- an electromagnetic plate on said cone shape bottom,
- wherein said straight cylinder shape body has an input port configured to receive input in a mixture of solid and liquid form, said cone shape bottom has an output port configured to deliver output in a condensed mixture of solid and liquid form, and said dome shape cover has a first output port configured to deliver output in a liquid form, and a second output port configured to deliver output in a gaseous form.
A method for separating solid from liquid through a high-efficiency solid-liquid separation tower, said solid-liquid separation tower comprising a dome shape cover, a straight cylinder shaped body and a cone shape bottom, said method comprising:
- collecting a mixture of water and sludge generated from a water treatment processes;
- pumping said mixture of water and sludge into an input port of said solid-liquid separation tower;
- separating bubbles from said mixture in a draft tube within said solid-liquid separation tower and venting out said bubbles through a ventilation pipe of said solid-liquid separation tower;
- forming an upward flow inside said solid-liquid separation tower by passing by said draft tube and a reflecting cone;
- separating solids of a big size from said mixture by:
- settling the solids of a big size into said cone shape bottom of said solid-liquid separation tower by gravity;
- forming a high electromagnetic field by connecting an electromagnetic plate with a high voltage electrostatic generator;
- attracting solids of a small size to form said solid of a big size in said upward flow;
- settling said solid of a big size into the cone bottom of said solid-liquid separation tower by an electromagnetic force and gravity;
- adjusting the upward flow by water distributors into a steady flow;
- and
- forming a coagulation of suspended solids in the steady flow;
- recovering treated water from an output port on the dome shape cover of said solid-liquid separation tower;
- discharging the electric charge of solids by grounding the bottom of said solid-liquid separation tower;
- and
- condensing and discharging the sludge in the cone bottom of said solid-liquid separation tower.
Dependencies are inferred from the claim text.