# US 11,027,225 B2 · Waste liquid treating apparatus

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- Number: US 11,027,225 B2
- Document ID: US11027225B2
- Status: Granted
- Kind: B2
- Application number: 16/857,443
- Filed: 2020-04-24
- Published: 2020-10-29
- Granted: 2021-06-08
- Earliest claimed: 2019-04-26
- Assignees: Disco Corporation
- Applicants: Disco Corporation
- Inventors: Jun Suwano; Takeshi Furonaka
- Web page: https://patentgrep.com/patent/US11027225B2

## CPC

- B01D 21/0003: {Making of sedimentation devices, structural details thereof, e.g. prefabricated parts}
- B01D 21/0033: {Vertical, perforated partition walls (B01D21/2422 takes precedence)}
- B01D 21/0006: {Settling tanks provided with means for cleaning and maintenance}
- B01D 21/0012: {Settling tanks making use of filters, e.g. by floating layers of particulate material}
- B01D 21/003: {Sedimentation tanks provided with a plurality of compartments separated by a partition wall (B01D21/0039 takes precedence)}
- B01D 21/0066: {with a meandering flow pattern of liquid or solid particles}
- B01D 21/0087: {Settling tanks provided with means for ensuring a special flow pattern, e.g. even inflow or outflow (B01D21/2411 takes precedence)}
- B01D 21/02: Settling tanks {with single outlets for the separated liquid}
- B01D 21/2483: {Means or provisions for manually removing the sediments}
- Y02P 70/10: Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
- 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)
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

A sedimenting assembly for sedimenting debris contained in a processed waste liquid in a sedimentation tank includes a plurality of partition plates extending vertically across a direction in which the processed waste liquid flows and disposed at spaced intervals in the direction, thereby defining a zigzag channel through which the processed waste liquid flows horizontally. The zigzag channel ensures a time during which to sediment the debris against a time during which the processed waste liquid flows through the zigzag channel, allowing the debris to settle reliably.

## Claims

### Claim 1

A waste liquid treating apparatus for removing debris from a processed waste liquid discharged from a processing apparatus, the apparatus comprising:
a sedimentation tank having side plates and a bottom plate interconnecting lower ends of the side plates;
an inlet joined to one of the side plates, for introducing the processed waste liquid into the sedimentation tank;
an outlet joined to another one of the side plates in confronting relation to the inlet, for discharging the processed waste liquid from the sedimentation tank; and
sedimenting means disposed between the inlet and the outlet, for sedimenting debris contained in the processed waste liquid,
wherein the sedimenting means includes a plurality of partition plates extending vertically across a direction from the inlet to the outlet and disposed at spaced intervals in the direction, the partition plates each including a through-hole, each of the through-holes on the partition plates being spaced from the side plates and the bottom plate of the sedimentation tank, wherein the through-holes on adjacent plates are at different positions such that the through-holes collectively define a zigzag channel through which the processed waste liquid flows horizontally.

### Claim 2 (depends on 1)

The waste liquid treating apparatus according to claim 1, wherein the sedimenting means includes boxes that can be inserted into the sedimentation box between the partition plates, and removed from the sedimentation box, each of the boxes including a pair of second side plates that face each other and a second bottom plate interconnecting lower ends of the second side plates, the second side plates of each of the boxes include windows, wherein one of the windows of each of the boxes is aligned with one of the through holes of the partition plates such that the windows of the boxes and the through holes of the partition plates collectively define the zig zag pattern, and by removing a selected one of the boxes from the sedimentation tank, debris sedimented in the selected one of the boxes is removed from the sedimentation tank.

### Claim 3 (depends on 2)

The waste liquid treating apparatus according to claim 2, wherein at least one of the second side plates of each of the boxes includes a dented portion having a plurality of holes.

### Claim 4 (depends on 2)

The waste liquid treating apparatus according to claim 2, wherein at least one of the second side plates of each of the boxes includes a dented portion made with a perforated metal defining a plurality of holes.

### Claim 5 (depends on 2)

The waste liquid treating apparatus according to claim 2, wherein the second side plates of each of the boxes include handles.

### Claim 6 (depends on 2)

The waste liquid treating apparatus according to claim 2, wherein the windows on the second side plates of each of the boxes are aligned with each other.

### Claim 7 (depends on 2)

The waste liquid treating apparatus according to claim 2, wherein the second side plates of each of the boxes are parallel to each other.

### Claim 8 (depends on 2)

The waste liquid treating apparatus according to claim 2, wherein the through-holes on the second side plates of each of the boxes are parallel to each other.