# US 11,898,316 B2 · Separating arrangement for a device for collecting waste from water and a device

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- Number: US 11,898,316 B2
- Document ID: US11898316B2
- Status: Granted
- Kind: B2
- Application number: 17/427,630
- Filed: 2020-02-06
- Published: 2022-03-31
- Granted: 2024-02-13
- Earliest claimed: 2019-02-08
- Applicants: Clewat Oy
- Inventors: Johannes Myllykoski
- Web page: https://patentgrep.com/patent/US11898316B2

## CPC

- B63B 35/32: for collecting pollution from open water
- E02B 15/104: {Conveyors; Paddle wheels; Endless belts (E02B15/101 takes precedence)}
- B01D 17/0214: {with removal of one of the phases}
- C02F 1/40: Devices for separating or removing fatty or oily substances or similar floating material (cleaning or keeping clear the surface of open water from oil or like materials E02B15/04; devices in sewers for separating liquid or solid substances from sewage E03F5/14, e.g. for use in drains leading to the sewer E03F5/16)
- E02B 15/045: {Separating means for recovering oil floating on a surface of open water (E02B15/048 takes precedence; separation in general B01D)}
- E02B 15/106: {Overflow skimmers with suction heads; suction heads}
- Y02A 20/204: Keeping clear the surface of open water from oil spills
- B63B: SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING (arrangements of vessel ventilation, heating, cooling, or air-conditioning B63J2/00; floating substructures as supports of dredgers or soil-shifting machines E02F9/06)
- E02B: HYDRAULIC ENGINEERING (ship-lifting E02C; dredging E02F)
- 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)
- 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)
- Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE

## Abstract

A separating arrangement for a device for collecting waste material floating on or near the surface of water is disclosed. The separating arrangement includes a first basin and a separating means. The water containing waste is led to the first basin by a transfer arrangement, such as a pipe. The device is configured in such a way that the water coming from the transfer arrangement has a speed gradient, namely, the cross section of the transfer arrangement has areas where the speeds of the water flow are different. The fastest speed component of the water has the highest concentration of waste. The first basin and the separating means are configured in such a way that when the water arrives at the first basin, most of the waste reaches the separating means and does not clog the walls of the first basin.

## Claims

### Claim 1

A separating arrangement for a device for collecting liquid or solid waste material including oil or plastic waste material floating on or near a surface of a body of water, the separating arrangement comprising:
a first basin,
an opening arranged in the first basin,
a separating means,
a collector arrangement configured for collecting water and waste, and
a transfer arrangement configured for transferring the collected water and waste to the separating means, the transfer arrangement comprising a base pipe configured to extend from the collector arrangement to the opening and a pressure pipe for forcing a jet of water into the base pipe when the device is in use,
wherein the separating means is configured to separate at least a part of the waste from the water from the first basin,
wherein a width of the first basin is at least three times a diameter of the opening,
wherein the collector arrangement is a funnel comprising a hole in a bottom of the funnel,
wherein the transfer arrangement comprises a vertical suction pipe connected to the hole of the collector arrangement,
wherein the base pipe is connected to the suction pipe under the funnel, and the pressure pipe is configured to direct the jet of water towards a center of the base pipe in such a way that the moving water in the base pipe has a speed gradient and a direction of the jet of water is parallel to a longitudinal axis of the base pipe,
wherein the water coming from the transfer arrangement to the first basin from the opening is directed to the separating means, and
wherein the separating means has a first end and a second end, and the first end of the separating means is nearer to the opening than the second end of the separating means, and
the separating means comprises a conveyor belt arrangement, and the conveyor belt arrangement comprises a first conveyor belt and a second conveyor belt, and the second conveyor belt is inside the first conveyor belt.

### Claim 2 (depends on 1)

The separating arrangement according to claim 1, wherein the transfer arrangement is configured such that a speed gradient of the water at the opening is such that the difference of a fastest speed component of the water and a slowest speed component of the water is 15% or more.

### Claim 3 (depends on 1)

The separating arrangement according to claim 1, wherein the first basin is configured to be filled with collected water and waste, and the opening is configured such that an upper edge of the opening is below a waterline when the device is in use.

### Claim 4 (depends on 1)

The separating arrangement according to claim 1, wherein the first basin and the opening are configured such that a lower edge of the opening is a distance of at least half the diameter of the opening above the bottom of the first basin near the opening.

### Claim 5 (depends on 1)

The separating arrangement according to claim 1, wherein a bottom and side walls of the first basin between the opening and the first end of the separating means are arranged parallel to a direction of a fastest speed component of the water at the opening.

### Claim 6 (depends on 1)

The separating arrangement according to claim 1, wherein the conveyor belt arrangement is configured to move separated solid waste material into one or more containers.

### Claim 7 (depends on 6)

The separating arrangement according to claim 6, wherein the separating arrangement comprises a lifting arrangement for lifting the conveyor belt arrangement such that the conveyor belt arrangement is arranged above the water when the device is in use.

### Claim 8 (depends on 1)

The separating arrangement according to claim 1, wherein the first conveyor belt and the second conveyor belt comprise holes, and the first conveyor belt is configured to carry waste particles of the solid material with a minimum diameter of 1 cm and the second conveyor belt is configured to carry waste particles of the solid material with a minimum diameter of 500 um.

### Claim 9 (depends on 8)

The separating arrangement according to claim 8, wherein the conveyor belt arrangement comprises an air blower system configured to blow over the second conveyor belt so as to loosen waste particles carried by the second conveyor belt.

### Claim 10 (depends on 1)

The separating arrangement according to claim 1, wherein:
the separating means comprises an oil separation arrangement having two or more plate-like weir arrangements configured for lifting oil off the surface of the water, attached to a bottom of the separation arrangement, and arranged transverse to a water flow direction in the separation arrangement,
at least part of the weir arrangements are arranged under water when the device is in use,
wherein the separating arrangement further comprises a second basin, and
the second basin is configured to store oil that the oil separation arrangement has separated.

### Claim 11 (depends on 10)

The separating arrangement according to claim 10, wherein inclinations of the weir arrangements or distances of upper edges of the weir arrangements from the surface of the water, or both, are adjustable to suit properties of the oil.

### Claim 12 (depends on 1)

The separating arrangement according to claim 1, wherein a distance between the opening and the first end of the separating means is such that a fastest speed component of the water at the first end of the separating means is 50% or less of a fastest speed component of the water at the opening when the device is in use.