Patent ID: 8246818

Claim:
A syphon filtration system comprising: a filter unit, filter external piping and control valves, a filter controller; said filter unit comprises a filter vessel, filter media, an outlet water internal pipe, a water level sensor and controller, an inlet water internal distribution pipe, and a backwash water collector trough; said filter external piping and control valves comprise an inlet water pipe and inlet water valve, an outlet water pipe, an outlet water syphon pipe, an outlet water discharge pipe, a syphon vent pipe, a rinse water discharge pipe, a backwash water supply pipe, a backwash water discharge pipe, an air vacuum pump and an outlet water control valve, a syphon control valve, a rinse water discharge control valve, a backwash water supply control valve, a backwash water rate of flow control valve; and said filter controller is electrically connected to said control valves, said water level sensor and controller, and an external control station, wherein said filter controller receives input signals from said water level sensor and controller and said external control station to activate open/close said control valves to control said filtration system operation in different cycles of filtration both without syphon action wherein said outlet water control valve and syphon control valve are open, and said rinse water discharge control valve and backwash water supply control valve are closed, and with syphon action wherein said outlet water control valve is open, and said syphon control valve, rinse water discharge control valve and backwash water supply control valve are closed.