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Title:
FLOATATION WATER TREATMENT UNIT
Document Type and Number:
WIPO Patent Application WO/2021/066674
Kind Code:
A1
Abstract:
A floatation water treatment unit is designed to treat water from contaminants, so that the quality of purified water is in compliance with requirements applicable to potable quality water. A floatation water treatment unit includes a body with partitions, exterior process fluid and effluent supply pipes, cover, treated water discharge pipe, froth-overflow channel with froth disposal pipe which delivers it further to the screw thickener with an external drive. A treated water discharge pipe is concatenated with a pipeline with inline prefilter, where outlet pipe is interconnected with an intermediate tank featuring an immersed pump and further in series with a reverse osmosis unit with a bypass and treated water tank (where bypass line is connected to a pipeline with process fluid make-up unit featuring an ejector, pump and aeration chamber). This floatation water treatment unit can be used to treat water supplied from various sources.

Inventors:
KSENOFONTOV BORIS SEMENOVICH (RU)
Application Number:
PCT/RU2020/000028
Publication Date:
April 08, 2021
Filing Date:
January 24, 2020
Export Citation:
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Assignee:
KSENOFONTOV BORIS SEMENOVICH (RU)
International Classes:
C02F1/24; C02F1/44; C02F9/00
Attorney, Agent or Firm:
LIMITED LIABILITY COMPANY "INTELLECTUAL PROPERTY" (RU)
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Claims:
Claim

1. A floatation water treatment unit includes a body with partitions, exterior process fluid and effluent supply pipes, cover, treated water discharge pipe, froth-overflow channel with froth disposal pipe which delivers it further to the screw thickener with an external drive. The distinctive feature of this design is that treated water discharge pipe is concatenated with a pipeline with inline prefilter, where outlet pipe is interconnected with an intermediate tank featuring an immersed pump and further in series with a reverse osmosis unit with a bypass and treated water tank (where bypass line is connected to a pipeline with process fluid make-up unit featuring an ejector, pump and aeration chamber).

2. So far as claim 1 is concerned, the distinctive feature of this floatation water treatment unit is that an aeration chamber has a partition with 1-15 holes which are rectangular in section with their size varying from 2x3 mm to 5x9 mm.

3. So far as claim 2 is concerned, the distinctive feature of this floatation water treatment unit is that partition available in an aeration chamber is made from magnetic material.

Description:
FLOATATION WATER TREATMENT UNIT

Pertinent Art

The utility model delivered as a floatation water treatment unit is designed to treat effluents.

Background

There are various floatation water treatment units which ensure both water purification and sludge thickening (Russian Utility Patent No.170182. Effluent Floatation Treatment Unit, priority dated 25 July 2016, registered on 18 April 2017; author and applicant - B.S. Ksenofontov.

Russian Patent No.2658411. Effluent Floatation Treatment Unit, priority dated 11 April 2017, registered on 21 June 2018; author and applicant - B.S. Ksenofontov).

So far as engineering characteristics are concerned, a floatation water treatment unit which includes a body with partitions, exterior process fluid and effluent supply pipes, cover, froth-overflow channel with froth disposal, treated water and froth discharge pipe (whereby froth is delivered down the pipeline to the screw thickener with an external drive) is most similar to this utility model (Russian Patent No.2669842. Effluent Floatation Treatment Unit, priority dated 17 November 2017, registered on 16 October 2018; author and applicant - B.S. Ksenofontov; prior art).

A low degree of purification is material weakness of this unit.

Disclosure

This utility model will be used to develop a floatation water treatment unit of new design to ensure high degree of purification of water from contaminants, including but not limited to, so that water of drinking quality is made available.

The technical result of embodiment consists in improving efficiency of water treatment process to have potable quality water.

The said purpose and technical result can be achieved through appropriate design of a floatation water treatment unit which includes a body with partitions, exterior process fluid and effluent supply pipes, cover, treated water discharge pipe, froth-overflow channel with froth disposal pipe which delivers it further to the screw thickener with an external drive. The distinctive feature of this design is that treated water discharge pipe is concatenated with a pipeline with inline prefilter, where outlet pipe is interconnected with an intermediate tank featuring an immersed pump and further in series with a reverse osmosis unit with a bypass and treated water tank (where bypass line is connected to a pipeline with process fluid make-up unit featuring an ejector, pump and aeration chamber). Moreover, an aeration chamber has a partition with 1-15 holes which are rectangular in section with their size varying from 2x3 mm to 5x9 mm. The said partition can be made from magnetic material.

Drawings

See Fig. 1 for layout of a floatation water treatment unit.

Embodiment

A floatation water treatment unit (see Fig. 1) consists of a body (1) with partitions (5), exterior process fluid (2) and effluent supply (3) pipes, cover (4), froth-overflow channel (6) with froth disposal pipe (7), treated water discharge pipe (8) interconnected to a pipeline with inline prefilter (9) with its outlet pipe (10) further connected to an intermediate tank (11), from where treated water is delivered by pump (12) to a reverse osmosis unit (13) with a bypass (26) and through a pipe (14) to a treated water tank (15) and further potable quality water is discharged through a pipe (16). Bypass (26) is interconnected to a process fluid make-up unit which consists of an ejector (27), pump (28) and aeration chamber (29). Moreover, an aeration chamber has a partition (30) with 1-15 holes with their size varying from 2 mm to 9 mm. The said partition (30) can be made from magnetic material. The aggregate quantity and size of the aforementioned holes were suggested and further verified at the floatation water treatment unit testing phase.

Froth discharged through a pipe (7) is further delivered through a pipeline (19) and pipe (18) to a screw thickener (22) with a drive (17) and pipe (20) designed to discharge clarified water into an intake tank (21). Thickened product is delivered through an egg-shaped outlet pipe (23) to a sludge intake tank (24) through a pipe (25).

Principle of operation of a floatation water treatment unit is as follows. Treated water and process fluid is delivered through pipe (3) and (2), respectively, into the unit body (1), where water is made subject to combined floatation pre treatment process. Further post-treatment of water is ensured by a prefilter (9) and reverse osmosis unit (13). Subsequently, treated water is discharged to a purified water tank (15) and used as intended. Froth generated during combined floatation treatment of water is delivered from a froth-overflow channel (6) through a pipe (7) and pipeline (19) into a screw thickener (22), where it is thickened. Further, thickened product is discharged into a sludge intake tank (24) and clarified water into an intake tank (21).

Quality of clarified water supplied from an intake tank (15) is in compliance with requirements applicable to potable quality water, while the degree of sludge thickening makes it transportable with residual moisture 65-75%. However, whenever existing units are used, quality of treated water fails to meet requirements applicable to potable quality water, so far as most parameters are concerned.

This floatation water treatment unit can be used on a stand-alone basis as a local treatment unit occupying an area which is 1.7-2.5 times less than that occupied by similar facilities.