CN109019775A - The counter-infiltration system and method for high concentration ratio suitable for high strong brine - Google Patents
The counter-infiltration system and method for high concentration ratio suitable for high strong brine Download PDFInfo
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- CN109019775A CN109019775A CN201810947982.3A CN201810947982A CN109019775A CN 109019775 A CN109019775 A CN 109019775A CN 201810947982 A CN201810947982 A CN 201810947982A CN 109019775 A CN109019775 A CN 109019775A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/06—Pressure conditions
- C02F2301/066—Overpressure, high pressure
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention relates to the counter-infiltration systems and method of the high concentration ratio for being suitable for high strong brine, the counter-infiltration system includes: into water high-pressure pump, first reverse osmosis concentrated compression system, condensed water elevator pump inlet pressure switch, condensed water elevator pump, condensed water promotes pump discharge pressure switch, the second reverse osmosis concentrated compression system and concentration water collection tank.The counter-infiltration system of high concentration ratio suitable for high strong brine of the invention, by optimization technique, primary pressurization can meet the high magnification concentration for realizing high strong brine, save investment cost and operating cost to greatest extent.Problem is reduced for the evaporation of water zero discharge project with high salt, the high concentration ratio of counter-infiltration system of the invention can significantly reduce concentration water, save the investment and operating cost of subsequent evaporation crystallization to greatest extent.
Description
Technical field
The present invention relates to the counter-infiltration systems and method of the high concentration ratio for being suitable for high strong brine.
Background technique
The concentration technology of the high strong brine of routine zero-emission at present, mainly uses reverse osmosis multi-stage booster formula, DTRO and electric osmose
The techniques such as analysis.The reverse osmosis osmotic pressure of multi-stage booster formula gradually rises with the increase of saliferous water concentration.25 DEG C of sodium chloride infiltrations
100bar@115g/l, 140bar@150g/l are pressed, considers concentration polarization and the influence of temperature, SWRO film pressure is big in actual test
It could be effectively concentrated in concentrate osmotic pressure 10bar.In order to realize that it is practical that the piecewise pressurized design of common multistage is concentrated in high magnification
It is upper difficult to realize.The small high voltage bearing booster pump of flow is difficult to seek in the market and cost superelevation.I.e. by boosting between multiple section
Pump boosts to realize that high magnification is concentrated step by step, there is the disadvantages of energy consumption is high, and the investment of the auxiliary devices such as flux low, water pump is big.And
DTRO and ED and thermal method etc. have the shortcomings that cost of investment height and high dual of operating cost.
And the problem of being exactly concentration rate and evaporate decrement of most critical in water zero discharge with high salt.Condensed water is improved as far as possible
TDS, reduce the water for entering evaporative crystallization, reduce the scale of crystallizing evaporator, reduce investment cost and operating cost, be mesh
The common target of preceding zero-emission industry.
Conventional reverse osmosis membranous system is typically only capable to using multistage boosting by brine concentration to 50000mg/L-70000mg/L,
The raising of the concentration rate of counter-infiltration system is seriously limited, a large amount of strong brine is generated, this requires situation in liquid zero emission
Under, immense pressure is formd in investment and energy consumption to process such as subsequent evaporation, crystallizations.
Summary of the invention
An object of the present invention is to provide a kind of counter-infiltration systems of high concentration ratio suitable for high strong brine.
The counter-infiltration system of high concentration ratio suitable for high strong brine of the invention, comprising: water inlet high-pressure pump, first is anti-
Osmosis concentration system, condensed water elevator pump inlet pressure switch, condensed water elevator pump, condensed water promote pump discharge pressure switch,
Second reverse osmosis concentrated compression system and concentration water collection tank；The water inlet high-pressure pump and the first reverse osmosis concentration system connectivity,
The first reverse osmosis concentrated compression system is connected to the condensed water elevator pump, the condensed water elevator pump and described second reverse osmosis
Concentration systems connection, the second reverse osmosis concentrated compression system are connected to the concentration water collection tank；The condensed water elevator pump into
The entrance of the condensed water elevator pump is arranged in mouth pressure switch, for controlling the inlet pressure of the condensed water elevator pump；
The condensed water promotes the exit that the condensed water elevator pump is arranged in pump discharge pressure switch, for controlling the condensed water
The outlet pressure of elevator pump.
The counter-infiltration system of high concentration ratio suitable for high strong brine of the invention, it is primary to be pressurized by optimization technique
The high magnification concentration for realizing high strong brine can be met, saved investment cost and operating cost to greatest extent.For with high salt
The evaporation of water zero discharge project is reduced problem, and the high concentration ratio of counter-infiltration system of the invention can significantly reduce condensed water
Amount saves the investment and operating cost of subsequent evaporation crystallization to greatest extent.
In addition, the counter-infiltration system of the above-mentioned high concentration ratio suitable for high strong brine of the present invention, can also have as
Under additional technical characteristic:
Further, first counter-infiltration system includes high pressure pressure vessel for reverse osmosis and high pressure resistant ro components；It is described
Second counter-infiltration system includes high pressure pressure vessel for reverse osmosis and high pressure resistant ro components.
Further, the pressure range of the water inlet high-pressure pump is 1MPa~8MPa.
Further, the pressure range of the water inlet high-pressure pump is 4MPa~7MPa.
Further, the pressure range of the condensed water elevator pump is 3MPa~7MPa.
Further, the pressure range of the condensed water elevator pump is 4MPa~6MPa.
Further, the water inlet salt content of the high strong brine is 20000mg/L~30000mg/L, the reverse osmosis system
The concentration rate of system is 3 times~5 times.
It is another object of the present invention to the methods for proposing that high strong brine is concentrated in the counter-infiltration system.
The method that high strong brine is concentrated in the counter-infiltration system, includes the following steps: S101: being 20000mg/L by concentration
The salt water of~30000mg/L, which is switched after being pressurizeed by the water inlet high-pressure pump by the condensed water elevator pump inlet pressure, to be entered
The first reverse osmosis concentrated compression system is concentrated；S102: described in the salt water entrance by the described first reverse osmosis concentrated compression system
Condensed water elevator pump promotes pump inlet then in turn through the outlet pressure switch of the condensed water elevator pump and the condensed water
Enter the described second reverse osmosis concentrated compression system after pressure switch；S103: it is passed through by the salt water of the described second reverse osmosis concentrated compression system
It crosses the condensed water and promotes pump discharge pressure switch into the concentration water collection tank.
Further, in the step S101, the salt water after the described first reverse osmosis concentrated compression system is concentrated can
With recycling and reusing.
Further, after the step S102, the salt water after the described second reverse osmosis concentrated compression system is concentrated can
With recycling and reusing.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the counter-infiltration system of the high concentration ratio suitable for high strong brine of the invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
Embodiment
As shown in Figure 1, the counter-infiltration system of the high concentration ratio suitable for high strong brine of the invention, comprising: water inlet is high
Press pump 1, the first reverse osmosis concentrated compression system 2, condensed water elevator pump inlet pressure switch 3, condensed water elevator pump 4, condensed water are promoted
Pump discharge pressure switch 5, the second reverse osmosis concentrated compression system 6 and concentration water collection tank 7.The water inlet high-pressure pump 1 and described first
Reverse osmosis concentrated compression system 2 is connected to, and the first reverse osmosis concentrated compression system 2 is connected to the condensed water elevator pump 4, the condensed water
Elevator pump 4 is connected to the described second reverse osmosis concentrated compression system 6, and the second reverse osmosis concentrated compression system 6 is collected with the condensed water
Case 7 is connected to.The entrance of the condensed water elevator pump 4 is arranged in the condensed water elevator pump inlet pressure switch 3, for controlling
The inlet pressure of the condensed water elevator pump.The condensed water promotes the setting of pump discharge pressure switch 5 and is promoted in the condensed water
The exit of pump, for controlling the outlet pressure of the condensed water elevator pump 4.
It is another object of the present invention to the methods for proposing that high strong brine is concentrated in the counter-infiltration system.
The method that high strong brine is concentrated in the counter-infiltration system, includes the following steps:
(1) by described after the salt water that concentration is 20000mg/L~30000mg/L being pressurizeed by the water inlet high-pressure pump
Condensed water elevator pump inlet pressure switch is concentrated into the described first reverse osmosis concentrated compression system.It is reverse osmosis concentrated through described first
Salt water after compression system is concentrated can be with recycling and reusing.Advantageously, it is described water inlet high-pressure pump pressure range be 1MPa~
8MPa.More advantageously, the pressure range of the water inlet high-pressure pump is 4MPa~7MPa.Advantageously, first counter-infiltration system
Including high pressure pressure vessel for reverse osmosis and high pressure resistant ro components.
(2) enter the condensed water elevator pump by the salt water of the described first reverse osmosis concentrated compression system, then in turn through
It is anti-to enter described second after the outlet pressure switch and condensed water elevator pump inlet pressure switch of the condensed water elevator pump
Osmosis concentration system.Salt water after the described second reverse osmosis concentrated compression system is concentrated can be with recycling and reusing.Advantageously, institute
The pressure range for stating condensed water elevator pump is 3MPa~7MPa.More advantageously, the pressure range of the condensed water elevator pump is
4MPa~6MPa.Advantageously, second counter-infiltration system includes high pressure pressure vessel for reverse osmosis and high pressure resistant ro components.
(3) by the described second reverse osmosis concentrated compression system salt water by the condensed water promoted pump discharge pressure switch into
Enter the concentration water collection tank.The concentration rate of the counter-infiltration system is 3 times~5 times.
In the present invention, the putamina of the first reverse osmosis concentrated compression system and the second reverse osmosis concentrated compression system is that two sections of arrangements are set
Meter.
Compression system reverse osmosis concentrated twice in the counter-infiltration system of above-mentioned high concentration ratio is by a condensed water elevator pump string
Connection, condensed water promote pump inlet and are connected to the first reverse osmosis concentration system outlet pipeline, directly utilize the first reverse osmosis concentrated compression system
Condensed water pressure, reduce system energy consumption.Condensed water elevator pump export pipeline is connected to the second reverse osmosis concentration system inlets.
And system realizes being concentrated again for a condensed water, improves the concentration rate of counter-infiltration system.
The pressure value of first reverse osmosis concentrated compression system water inlet end is relatively low, for the desalted water and pre-concentration of output qualification,
The condensed water water outlet pressure value value of second reverse osmosis concentrated compression system is higher, and concentrated water side concentration is low with the permeable pressure head that permeate is surveyed
In operating pressure, economic flux can be obtained next time in the operating pressure lower than concentrate Absolute permeation pressure, realize concentration
It is required that.Compared with the high pressure reverse osmosis concentration technology based on conventional reverse osmosis design concept, the counter-infiltration system of high concentration ratio
System running pressure is greatly reduced, concentration rate is improved and system is using pressurization between a secondary segment or isobaric concentration design, is subtracted
Less or the use of high pressure resistant inter-section booster is avoided, reduces construction, the management cost of system.
The counter-infiltration system of high concentration ratio suitable for high strong brine of the invention, it is primary to be pressurized by optimization technique
The high magnification concentration for realizing high strong brine can be met, saved investment cost and operating cost to greatest extent.For with high salt
The evaporation of water zero discharge project is reduced problem, and the high concentration ratio of counter-infiltration system of the invention can significantly reduce condensed water
Amount saves the investment and operating cost of subsequent evaporation crystallization to greatest extent.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of counter-infiltration system of the high concentration ratio suitable for high strong brine characterized by comprising
Water inlet high-pressure pump, the first reverse osmosis concentrated compression system, condensed water elevator pump inlet pressure switch, condensed water elevator pump, concentration
Water promotes pump discharge pressure switch, the second reverse osmosis concentrated compression system and concentration water collection tank；
The water inlet high-pressure pump and the first reverse osmosis concentration system connectivity, the first reverse osmosis concentrated compression system with it is described dense
The connection of shrink elevator pump, the condensed water elevator pump and the second reverse osmosis concentration system connectivity, described second is reverse osmosis concentrated
Compression system is connected to the concentration water collection tank；
The entrance of the condensed water elevator pump is arranged in the condensed water elevator pump inlet pressure switch, described dense for controlling
The inlet pressure of shrink elevator pump；
The condensed water promotes the exit that the condensed water elevator pump is arranged in pump discharge pressure switch, described dense for controlling
The outlet pressure of shrink elevator pump.
2. the counter-infiltration system of the high concentration ratio according to claim 1 suitable for high strong brine, which is characterized in that institute
Stating the first counter-infiltration system includes high pressure pressure vessel for reverse osmosis and high pressure resistant ro components；The second counter-infiltration system packet
Include high pressure pressure vessel for reverse osmosis and high pressure resistant ro components.
3. the counter-infiltration system of the high concentration ratio according to claim 1 suitable for high strong brine, which is characterized in that institute
State into water high-pressure pump pressure range be 1MPa~8MPa.
4. the counter-infiltration system of the high concentration ratio according to claim 3 suitable for high strong brine, which is characterized in that institute
State into water high-pressure pump pressure range be 4MPa~7MPa.
5. the counter-infiltration system of the high concentration ratio according to claim 1 suitable for high strong brine, which is characterized in that institute
The pressure range for stating condensed water elevator pump is 3MPa~7MPa.
6. the counter-infiltration system of the high concentration ratio according to claim 5 suitable for high strong brine, which is characterized in that institute
The pressure range for stating condensed water elevator pump is 4MPa~6MPa.
7. the counter-infiltration system of the high concentration ratio according to claim 1 suitable for high strong brine, which is characterized in that institute
The water inlet salt content for stating high strong brine is 20000mg/L~30000mg/L, and the concentration rate of the counter-infiltration system is 3 times~5
Times.
8. the method that high strong brine is concentrated using any one of the claim 1-7 counter-infiltration system, which is characterized in that including such as
Lower step:
S101: by described dense after the salt water that concentration is 20000mg/L~30000mg/L is pressurizeed by the water inlet high-pressure pump
Shrink elevator pump inlet pressure switch is concentrated into the described first reverse osmosis concentrated compression system；
S102: enter the condensed water elevator pump by the salt water of the described first reverse osmosis concentrated compression system, then in turn through institute
Enter second reverse osmosis after stating the outlet pressure switch and condensed water elevator pump inlet pressure switch of condensed water elevator pump
Saturating concentration systems；
S103: pump discharge pressure switch is promoted by the condensed water by the salt water of the described second reverse osmosis concentrated compression system and is entered
The concentration water collection tank.
9. the method that high strong brine is concentrated in counter-infiltration system according to claim 8, which is characterized in that in the step S101
In, the salt water after the described first reverse osmosis concentrated compression system is concentrated can be with recycling and reusing.
10. the method that high strong brine is concentrated in counter-infiltration system according to claim 8, which is characterized in that in the step
After S102, the salt water after the described second reverse osmosis concentrated compression system is concentrated can be with recycling and reusing.
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| CN201810947982.3A CN109019775A (en) | 2018-08-20 | 2018-08-20 | The counter-infiltration system and method for high concentration ratio suitable for high strong brine |
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| CN201810947982.3A CN109019775A (en) | 2018-08-20 | 2018-08-20 | The counter-infiltration system and method for high concentration ratio suitable for high strong brine |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1132108A (en) * | 1994-10-12 | 1996-10-02 | 东丽株式会社 | Reverse osmosis separating unit and its method |
| KR20130086866A (en) * | 2012-01-26 | 2013-08-05 | 박용주 | Seawater concentration system and seawater concentration method utilizing the same |
| CN203108441U (en) * | 2013-02-07 | 2013-08-07 | 上海凯鑫分离技术有限公司 | High concentration inorganic salt material concentrating device |
| CN105592915A (en) * | 2013-10-08 | 2016-05-18 | 豪威株式会社 | Chemical cleaning method for RO/NF membrane system consisting of two arrays |
| JP5966639B2 (en) * | 2012-06-08 | 2016-08-10 | 東レ株式会社 | Salt water desalination apparatus and fresh water generation method |
| JP2017029881A (en) * | 2015-07-29 | 2017-02-09 | 株式会社クボタ | Salt water desalination plant and method of remodeling the salt water desalination plant |
| CN207158994U (en) * | 2017-06-13 | 2018-03-30 | 陕西省石油化工研究设计院 | A kind of two-way concentrating and separating device of high-salt wastewater for sulfur acid sodium and sodium chloride |
-
2018
- 2018-08-20 CN CN201810947982.3A patent/CN109019775A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1132108A (en) * | 1994-10-12 | 1996-10-02 | 东丽株式会社 | Reverse osmosis separating unit and its method |
| KR20130086866A (en) * | 2012-01-26 | 2013-08-05 | 박용주 | Seawater concentration system and seawater concentration method utilizing the same |
| JP5966639B2 (en) * | 2012-06-08 | 2016-08-10 | 東レ株式会社 | Salt water desalination apparatus and fresh water generation method |
| CN203108441U (en) * | 2013-02-07 | 2013-08-07 | 上海凯鑫分离技术有限公司 | High concentration inorganic salt material concentrating device |
| CN105592915A (en) * | 2013-10-08 | 2016-05-18 | 豪威株式会社 | Chemical cleaning method for RO/NF membrane system consisting of two arrays |
| JP2017029881A (en) * | 2015-07-29 | 2017-02-09 | 株式会社クボタ | Salt water desalination plant and method of remodeling the salt water desalination plant |
| CN207158994U (en) * | 2017-06-13 | 2018-03-30 | 陕西省石油化工研究设计院 | A kind of two-way concentrating and separating device of high-salt wastewater for sulfur acid sodium and sodium chloride |
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Application publication date: 20181218 |