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US 10,159,939 B2Granted
Reverse osmosis system
AssigneeVivonic GmbH
InventorManfred Volker
Life of this patent
Estimating the term…
Abstract
A method is provided for sanitizing a reverse osmosis system to supply high-purity permeate. Included in the method is supplying raw water to a feed tank and to a filter module using a raw-water inlet line having an inlet valve. A primary circuit is provided, and has a first pump connected to the filter module. A secondary circuit is provided, and has a second pump and a heater, both of which are connected to the filter module. The primary circuit is separated from the secondary circuit using a semipermeable membrane disposed in the filter module. The secondary circuit of the reverse osmosis system is cleaned or disinfected while the raw-water inlet line is in a disconnected state and the inlet valve is in a closed state using the second pump and the heater.
Claims12
A method for sanitizing a reverse osmosis system to supply high-purity permeate, the method comprising:
- supplying raw water to a feed tank and to a filter module using a raw-water inlet line having an inlet valve, the filter module comprising a semipermeable membrane and a permeate collection tube;
- providing a primary circuit of the reverse osmosis system having a first pump connected to the filter module, wherein the semipermeable membrane is disposed within the primary circuit, the semipermeable membrane being coupled at a first end to a mixed-water connection of the primary circuit and at an opposed second end to a concentrate outlet line of the primary circuit, the primary circuit further comprising a bypass valve for modulating a pressure buildup in the reverse osmosis system;
- providing a secondary circuit of the reverse osmosis system having a second pump and a heater, the second pump and heater being connected to the filter module, wherein the permeate collection tube is disposed within the secondary circuit, the permeate collection tube being coupled at a first end to a permeate circulation line of the secondary circuit and at an opposed second end to a permeate supply line of the secondary circuit;
- separating the primary circuit from the secondary circuit using the semipermeable membrane disposed in the filter module, wherein the semipermeable membrane includes membrane pockets that are spirally arranged about the permeate collection tube such that liquid in the primary circuit which is supplied via the membrane pockets can enter into the permeate collection tube;
- at least one of cleaning and disinfecting the secondary circuit of the reverse osmosis system while the raw-water inlet line is in a disconnected state and the inlet valve is in a closed state using the second pump and the heater;
- wherein said at least one of cleaning and disinfecting comprises:
- activating the second pump using computer-readable instructions with predetermined intervals and execution times;
- activating the heater to heat permeate in the secondary circuit to a disinfecting temperature;
- circulating the raw-water in the primary circuit using the first pump via the feed tank;
- and
- opening the bypass valve for achieving a predetermined pressure in the secondary circuit and a predetermined flow velocity in the primary circuit.
8 more elements
A method for sanitizing a reverse osmosis system to supply high-purity permeate, the method comprising:
- supplying raw water to a feed tank and to a filter module using a raw-water inlet line having an inlet valve, the filter module comprising a semipermeable membrane and a permeate collection tube;
- providing a primary circuit of the reverse osmosis system having a first pump connected to the filter module, wherein the semipermeable membrane is disposed within the primary circuit, the semipermeable membrane being coupled at a first end to a mixed-water connection of the primary circuit and at an opposed second end to a concentrate outlet line of the primary circuit, the primary circuit further comprising a bypass valve for modulating a pressure buildup in the reverse osmosis system;
- providing a secondary circuit of the reverse osmosis system having a second pump and a heater, wherein the permeate collection tube is disposed within the secondary circuit, the permeate collection tube being coupled at a first end to a permeate circulation line of the secondary circuit and at an opposed second end to a permeate supply line of the secondary circuit, the permeate circulation line being connected to the second pump and the permeate supply line being connected to the heater;
- separating the primary circuit from the secondary circuit using a semipermeable membrane disposed in the filter module, wherein the semipermeable membrane includes membrane pockets that are spirally arranged about the permeate collection tube such that liquid in the primary circuit which is supplied via the membrane pockets can enter into the permeate collection tube;
- at least one of cleaning and disinfecting the secondary circuit of the reverse osmosis system while the raw-water inlet line is in a disconnected state and the inlet valve is in a closed state using the second pump and the heater;
- wherein said at least one of cleaning and disinfecting comprises:
- activating the second pump using computer-readable instructions with predetermined intervals and execution times;
- activating the heater to heat permeate in the secondary circuit to a disinfecting temperature;
- circulating the raw-water in the primary circuit using the first pump via the feed tank;
- and
- opening the bypass valve for achieving a predetermined pressure in the secondary circuit and a predetermined flow velocity in the primary circuit.
8 more elements
Dependencies are inferred from the claim text.