# US 2021/0276899 A1 · Water treatment system

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- Number: US 2021/0276899 A1
- Document ID: US20210276899A1
- Status: Published application
- Kind: A1
- Application number: 16/624,028
- Filed: 2018-06-19
- Published: 2021-09-09
- Earliest claimed: 2017-06-22
- Assignees: Claudia Staindel
- Inventors: Peter Koch
- Web page: https://patentgrep.com/patent/US20210276899A1

## CPC

- A47B 88/473: Braking devices, e.g. linear or rotational dampers or friction brakes; Buffers; End stops
- A47B 88/50: Safety devices or the like for drawers (locks specially adapted for a plurality of drawers E05B65/46)
- B01F 23/2323: {by circulating the flow in guiding constructions or conduits}
- B01F 23/237613: {Ozone}
- B01F 25/1041: {the mixing chamber being vertical with the outlet tube at its upper side}
- B01F 25/53: in which the mixture is discharged from and reintroduced into a receptacle through a recirculation tube, into which an additional component is introduced
- C02F 1/001: {Processes for the treatment of water whereby the filtration technique is of importance (C02F1/44 takes precedence; construction of filters in general B01D24/00 - B01D41/00)}
- C02F 1/442: {by nanofiltration}
- C02F 1/444: {by ultrafiltration or microfiltration}
- C02F 1/78: with ozone {(C02F1/4672 takes precedence)}
- E04H 5/12: Cooling towers
- A47B 88/49: with double extensible guides or parts
- C02F 2103/023: {Water in cooling circuits}
- C02F 2103/06: Contaminated groundwater or leachate
- C02F 2103/18: from the purification of gaseous effluents
- C02F 2103/42: from bathing facilities, e.g. swimming pools
- C02F 2201/784: Diffusers or nozzles for ozonation
- C02F 2301/026: Spiral, helicoidal, radial
- C02F 2301/043: Treatment of partial or bypass streams
- C02F 2301/046: Recirculation with an external loop
- E04H 4/1209: {Treatment of water for swimming pools (filters B01D)}
- A47B: TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE (furniture jointing F16B)
- B01F: MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING (mixing paints B44D3/06)
- C02F: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (separation in general B01D; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e.g. for producing fresh water, B63J; adding materials to water to prevent corrosion C23F; treating radioactively-contaminated liquids G21F9/04; regeneration of reactants for recirculation into processes, see the relevant places for the processes)
- E04H: BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL (foundations E02D)

## Abstract

In a water treatment system, in particular for cooling towers, comprising a fluid basin and a circulation circuit designed to draw a fluid from the fluid basin and subsequently return it again, the circulation circuit comprising an ozone supply device for introducing ozone into the fluid, it is provided that the ozone supply device comprises a swirl chamber reactor and an ozone generator, which is connected to a filter system having an inlet opening for ambient air such that ambient air cleaned by the filter system, in particular substantially pure oxygen, can be fed to the ozone generator for ozone generation.

## Claims

### Claim 1

A water treatment system comprising a fluid basin and a circulation circuit designed to draw a fluid from the fluid basin and subsequently return it again, the circulation circuit comprising an ozone supply device for introducing ozone into the fluid, wherein the ozone supply device comprises a swirl chamber reactor and an ozone generator, that is arranged to introduce ozone into the swirl chamber reactor, wherein the ozone generator is connected to a filter system having an inlet opening for ambient air, wherein the filter system is configured to filter the ambient air to obtain substantially pure oxygen, which is fed to the ozone generator for ozone generation.

### Claim 2 (depends on 1)

The water treatment system according to claim 1, wherein the swirl chamber reactor comprises a Laval nozzle.

### Claim 3 (depends on 1)

The water treatment system according to claim 1, wherein the swirl chamber reactor comprises at least two fluid intakes.

### Claim 4 (depends on 1)

The water treatment system according to claim 1, wherein the circulation circuit comprises a lime filter which is comprised of a microfiltration unit with an exclusion limit of 0.2-1 μm.

### Claim 5 (depends on 4)

The water treatment system according to claim 4, wherein the lime filter is disposed downstream of the ozone supply device, viewed in the flow direction.

### Claim 6 (depends on 1)

The water treatment system according to claim 1, wherein the circulation circuit is connected to a refeeding line opening into the circulation circuit upstream of the ozone supply device, viewed in the flow direction.

### Claim 7 (depends on 6)

The water treatment system according to claim 6, characterized in that the refeeding line comprises a microfiltration with an exclusion limit of preferably <0.2 μm and/or an ozone supply device comprising a swirl chamber reactor.

### Claim 8 (depends on 1)

The water treatment system according to claim 1, characterized in that the circulation circuit comprises a bypass line in which the ozone supply device is arranged.

### Claim 9 (depends on 1)

A cooling tower comprising a water treatment system according to claim 1.

### Claim 10

A method for water treatment wherein a fluid is conducted from a fluid basin into a circulation circuit substantially pure ozone is introduced into the fluid in the circulation circuit by means of a swirl chamber reactor, and subsequently the fluid is again returned from the circulation circuit into the fluid basin.

### Claim 11 (depends on 1)

The water treatment system according to claim 1, wherein the swirl chamber reactor is spiral-shaped or egg-shaped.

### Claim 12 (depends on 4)

The water treatment system according to claim 4, wherein the lime filter is a membrane filter.