SU1760980A3 - Desalinating station - Google Patents

Abstract

Use: water supply, desalination of salt waters. The essence of the invention: the station contains coarse filters 2 fine 3 water purification and sorption filter 4, high pressure pumps 42 and 43 and two reverse osmosis apparatus I and II stages. For the redistribution of the feed water streams, filtrates (F) and concentrates between the sorption filter 4 and the pump 43, a salt content control unit (B) 11 was additionally introduced with a distribution, 15, regulating 16 and shut-off 12 valves and two three-way valves 18 and 19 combined in one case Depending on the salt content of the source water B, it can be added to the F stage II delivered to the consumer, or the F stage I through the valve 15, or the concentrate of any stage through the taps 19 and 45, or the source water through the valve 18 in various cetanah x, while maintaining a predetermined concentration of salts in the water issued to the consumer. 6 Il. (Ls

Description

The invention relates to the field of water supply, in particular to mobile stations for the desalination of salt water.

Water purification devices are known, consisting of coarse and fine water purification filters, a sorption filter, chemical water additives, a single-stage reverse osmosis apparatus, and a high-pressure pump (see application G UK 2007637 according to C 02 V 1 / 00).

A method and apparatus for water purification is also known, containing 1-5 micron filters, activated carbon filters, two reverse osmosis chambers with pressure pumps, while the water flowing from the first chamber is fed by a pressure pump to the second chamber, from which the brine is recirculated to place on the unit before the first reverse osmosis chamber (prototype - US Patent G 4808287 in class C 02 F 9/00).

The known installation allows to obtain desalinated water with a constant capacity, regardless of the salt concentration in the source water, but with a different salinity of desalinated water, which varies in proportion to the salinity of the outcomes | oh oh

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Noah water. For this reason, in the case of desalination of low-saline waters, the water supplied to the consumer is obtained over-treated and in order to give it the necessary taste, for example, such water has to be conditioned. At the same time, the installation does not allow to regulate the salinity of the water supplied to the consumer.

The purpose of the present invention is to increase productivity by redistributing the streams of salt water, concentrate and produced water.

To achieve this goal, in a known desalination device between the sorption filter to the reverse osmotic apparatus of the second stage, there is a control unit for salt-forest, which includes a tank, distribution, control and shut-off valves and integrated in a three-way valve it is equipped with a spring pressure regulator and has a ltrait inlet from the apparatus of the pergei stage and a skoda in the tank and in the pipeline of produced water; the control valve is connected to the outlet of the filtrate from a the second stage unit and the tank, the shut-off valve is equipped with a float with a lever system and is installed on the case of three-way valves, from which we connect with the concentrate pipelines of the apparatus first, and the step curtain, and the second with the sorption filter. i

Comparative analysis with the prototype shows that the proposed desalination station is characterized by the presence of a new salt control unit, including a tank, a distribution valve with a spring pressure regulator, a control valve with a float and a lever system, as well as two three-way valves combined in one housing. At the same time, the salt content control unit is installed by the sorption filter and the second stage reverse osmosis apparatus and is connected to the source water pipelines, filtrates and concentrates of both stages.

Thus, the proposed desalination plant meets the criterion of novelty.

Comparison of the claimed solution with other technical solutions in Dan 10

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This field of technology did not allow detecting in them the signs that distinguish the claimed solution from the prototype, which makes it possible to conclude that the criterion meets significant differences.

1 shows a general view of the desalination station; 2 shows a salt content control unit; fig.Z - distribution valve; in fig. - control valve; figure 5 - three-way valves; 6 is a schematic diagram.

 The station contains source water feed pump 1, coarse water filters 2, fine water purification 3, sorbschimi, device 5 for supplying chemicals to water, high pressure pumps 6, desalination devices 7 of the first and second desalination stages, control unit Contents I, generator 9 and pump 19 for distribution to water.

The unit for regulating salt content has a tank 11, with a shut-off valve 12 e placed on it with a float 13 and a lever system of 1%. Ia tank cover uetanovti r®pr @ delmt @ shy-valve 15 regul iraadmy valve 16 and panel 17 with douche three thedoshmm t8 and 15 taps.

The dispensing valve 15 has a single-sided 20 with an A-2m, a saddle 22 and a cheap regulator. The nipple 23 serves as a ® Fluid fm & waste from the apparatus of the @ @ ® stage прес pressmeme, e nipple 2A and 25, which is required to reach the consumer and the tank 11. The pressure regulator has a valve 26, a saddle 27 and a valve 28.

The control valve 16 has a spindle 29, a spool 30 and a saddle 31. A filtrate from the second desalination stage is supplied to the nozzle 32, and through the nozzle 33 it enters the tank 11.

On panel 17, in addition to two three-way valves 18 and 19, there are four nozzles:% b for the input water supply, 35 for the second stage desalination concentrate, and 36 and 37 for the discharge of the first stage desalination pump, respectively. In the lower part of the panel 17 there is a seat 38 for the check valve 12.

The station operates as follows.

The original salt water is pumped by pump 1 into contact tanks 39 and

0 "Chemicals are introduced into the water flow using device 5. From the contact tank 40, water is pumped by the pump 41 to the fine filters 3 and the sorption 4, in which dissolved organic substances are removed from the water. Further, the purified saline water is directed, depending on the concentration of salts in it, either to the high pressure pump 42 and the first desalination apparatus, or simultaneously through the three-way valve 18, the shut-off valve 12 and the tank 11 of the salinity control unit to the high-pressure pump 43 and into the apparatus of the second stage of desalination, or, finally, to both reverse osmosis apparatus and through the valve 44 to the water supplied to the consumer.

In the first case (for raw water with high salinity), the filtrate from the first desalination stage comes sequentially through the distribution valve 15 and the tank 11 to the second stage apparatus, the filtrate from which is delivered to the consumer. At the same time, the capacity of the station will be minimal, and the water supplied to the consumer, as a rule, over-fresh.

In order to increase the capacity of the station without exceeding the maximum salt concentration in the water supplied to the consumer, only part of the filtrate from the first is sent to the second-stage desalination apparatus, adding either source water through the three-way valve 18 or the second-stage desalination concentrate to the salinity control unit through a three-way valve 19. At the same time, the capacity of the station is increased by adding to the filtrate of the second stage desalination of filtrate from the first stage.

In the case when brackish water is used as the source water with a slight excess of the permissible concentration

concentration of salts, devices of both stages work in parallel and to the mixture of both filtrates dispensed to the consumer, the initial purified water is added, or even a concentrate from one of the devices.

As a result, while maintaining the quality of the water supplied to the consumer, the capacity of the station increases, depending on the concentration of salts in the source water from 20% to twice or more.

Claims (1)

15 claims 0 five 0 five 0 five A desalination plant containing prefilter and sorption filters with activated carbon, reverse osmosis apparatus of the first and second stages, high pressure pumps and piping, characterized in that, in order to improve the performance and quality of water by redistributing the streams of salt water, concentrate and output oxes, in it, between the sorption filter and the second stage reverse osmosis apparatus, there is additionally installed a control unit of the sodesardergamm, including a tank, separating, regulating and shut-off valves and two three-way valves connected by the bureau, the distribution valve is provided with a spring pressure regulator and is connected by its inlet to the filtrate outlet from the first stage apparatus, and the outlet to the tank and the outflow water pipeline, the regulating valve is connected to the outlet pipeline the filtrate from the second stage apparatus and the tank, one of the three-way valves is connected to the pipes for the withdrawal of the concentrate from the second stage apparatus and to the inlet of the high-pressure pump, and the second is from orbital filter and shut-off valve installed in the tank. t s N I cr about VЈ OO About vx ± sz og 08609ZI 8Ј V-v Yg / f 7 / 07Z & $ & $ ОШШ Honcentda / n / Bcfp & imdo