Apparatus for processing liquids such as water and the like by reverse osmosis
First Claim
1. An improved apparatus for processing a solution, such as waste water and the like by means of a reverse osmosis unit, having an inlet for the solution and two outlets for pure water and concentrate wherein the solution is conducted to the reverse osmosis unit by a first pump driven by a motor, the pressurized concentrate being expanded in a turbine which is connected to said first pump while the pure water is withdrawn in a pressureless state, the improvement which comprises:
- a second pump associated to said first pump and located between said first pump and said reverse osmosis unit, the second pump being connected to an individual motor via a clutch, wherein the motor of said first pump is connected thereto via a disengageable clutch.
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Abstract
An apparatus for processing liquids such as water or the like by means of a reverse osmosis device has a main pump which provides an entrance pressure to the reverse osmosis device in connection with a throttle. In order to avoid any losses of energy, another pump is connected to the main pump. Via a rigid shaft, a turbine is connected to the other pump which turbine receives the high pressure located in the concentrate and releases it to the other pump.
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Citations
6 Claims
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1. An improved apparatus for processing a solution, such as waste water and the like by means of a reverse osmosis unit, having an inlet for the solution and two outlets for pure water and concentrate wherein the solution is conducted to the reverse osmosis unit by a first pump driven by a motor, the pressurized concentrate being expanded in a turbine which is connected to said first pump while the pure water is withdrawn in a pressureless state, the improvement which comprises:
- a second pump associated to said first pump and located between said first pump and said reverse osmosis unit, the second pump being connected to an individual motor via a clutch, wherein the motor of said first pump is connected thereto via a disengageable clutch.
- View Dependent Claims (2, 3, 6)
- 4. An apparatus as defined in clam 3, wherein the speed of the second pump is controllable, the second pump being developed as centrifugal pump.
Specification