# US 2023/0069293 A1 · Environmentally friendly water intake and pretreatment system

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- Number: US 2023/0069293 A1
- Document ID: US20230069293A1
- Status: Published application
- Kind: A1
- Application number: 17/902,922
- Filed: 2022-09-05
- Published: 2023-03-02
- Earliest claimed: 2016-06-07
- Assignees: I.D.E. Technologies Ltd.
- Applicants: I.D.E. Technologies Ltd
- Inventors: Boris LIBERMAN; Miriam FAIGON; Vitaly LEVITIN; Gal Greenberg
- Web page: https://patentgrep.com/patent/US20230069293A1

## CPC

- C02F 1/004: {using large scale industrial sized filters}
- A01K 61/70: Artificial fishing banks or reefs
- A01K 79/02: by electrocution
- B01D 24/12: Downward filtration, the filtering material being supported by pervious surfaces (B01D24/18 takes precedence)
- B01D 24/4631: {Counter-current flushing, e.g. by air}
- B01D 24/4636: {with backwash shoes; with nozzles}
- 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)}
- E02B 1/006: {Arresting, diverting or chasing away fish in water-courses or water intake ducts, seas or lakes, e.g. fish barrages, deterrent devices (E02B8/085 takes precedence); Devices for cleaning fish barriers}
- E03B 3/04: from surface water {(barrages E02B7/00)}
- C02F 2103/08: Seawater, e.g. for desalination
- C02F 2201/004: Seals, connections
- C02F 2301/04: Flow arrangements
- C02F 2303/16: Regeneration of sorbents, filters
- C02F 2303/24: Separation of coarse particles, e.g. by using sieves or screens
- Y02A 40/81: Aquaculture, e.g. of fish
- 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)
- A01K: ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)
- E02B: HYDRAULIC ENGINEERING (ship-lifting E02C; dredging E02F)
- E03B: INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER (drilling wells, obtaining fluids in general from wells E21B; pipe-line systems in general F17D)
- Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE

## Abstract

A water intake and pretreatment system (10) comprising an inlet for delivering water from a natural source to a reservoir (12); said inlet to reservoir having a net screen (16) to prevent entry of organisms above a predetermined size and including a one-way gate (30) to allow organisms to exit the reservoir; said reservoir further comprising a granular filter media for water and algae filtration; and a drainage layer for removal of filtered water from the granular filter media to a drainage outlet. A local backwashing apparatus 40) is included for localized backwashing of the granular filter media.

## Claims

### Claim 1

A method for water intake and pretreatment comprising:
delivering water from a natural source to a reservoir;
preventing entry of organisms above a predetermined size into the reservoir but allowing organisms to exit the reservoir;
filtering water in said reservoir through a granular filter media for water and algae filtration; and
removing the filtered water from the granular filter media.

### Claim 2 (depends on 1)

The method of claim 1, wherein organisms of a predetermined minimum size are only allowed to exit the reservoir.

### Claim 3 (depends on 1)

The method of claim 1, further comprising:
local backwashing of partial volumes of the granular filter media.

### Claim 4 (depends on 1)

The method of claim 1, further comprising:
rinsing the reservoir.