CN109231556A - The diffusion dialysis processing unit and its processing method of acid/base waste liquid - Google Patents
The diffusion dialysis processing unit and its processing method of acid/base waste liquid Download PDFInfo
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- CN109231556A CN109231556A CN201811202540.2A CN201811202540A CN109231556A CN 109231556 A CN109231556 A CN 109231556A CN 201811202540 A CN201811202540 A CN 201811202540A CN 109231556 A CN109231556 A CN 109231556A
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- diffusion dialysis
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- waste liquid
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- dialysing compartment
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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
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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
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
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- Environmental & Geological Engineering (AREA)
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Abstract
The present invention provides the diffusion dialysis processing unit and its processing method of a kind of acid/base waste liquid, is related to technical field of waste water processing field.The device includes: diffusion dialysis membrane stack, and the diffusion dialysis membrane stack includes diffuser casing and dialysing compartment；Amberplex, the amberplex form selective connection between the diffuser casing and dialysing compartment, and through amberplex；Compression system, the compression system include gas device and gas connection pipe, and the gas device is delivered the gas in dialysing compartment by gas connection pipe.It is handled by above-mentioned apparatus, dialysis chamber pressure is given by compression system, dialysis operation is diffused under the effect of the double drive of pressure difference and concentration difference, the mass transfer flux of ion can be increased, to promote the treating capacity of diffusion dialysis process, the reverse osmosis phenomenon of water can also be effectively inhibited simultaneously, improve diffusion dialysis mass transfer effect.In addition, apparatus of the present invention structure is simple and convenient to operate, low energy consumption, does not easily lead to secondary pollution.
Description
Technical field
The present invention relates to technical field of waste water processing, and in particular to a kind of diffusion dialysis processing unit of acid/base waste liquid and
Its processing method.
Background technique
Acid/base waste liquid includes acid waste liquid and alkaline waste liquor, and wherein acid waste water is waste water of the pH value less than 6, main next
From the waste water discharged in enterprises such as metallurgy, intermetallic composite coating, petrochemical industry, chemical fibre, plating；And alkaline waste water is that pH value is greater than 9
Waste water mostlys come from the industries such as papermaking, process hides, oil refining, petrochemical industry, chemical fibre.Acidic and alkaline waste water, which enters water body, can destroy nature
Neutralization makes the pH value of water body change, and influences the normal growth of aquatile, makes self-purification of water function reduction.Soda acid
Waste water penetrates into soil, can destroy the physicochemical property of soil, cause the acidification or alkalization of soil, influence crops normal growth.Often
Year, China can all generate a large amount of acid/base waste liquid in industrial processes.
It is at present neutralisation for the traditional treatment method of acid/base waste liquid, including in dispensing neutralization, acidic and alkaline waste water and waits,
But neutralisation there are it is at high cost, be also easy to produce secondary pollution problems.A kind of new processing method at present, is also gradually being pushed away
Extensively, i.e. diffusion dialysis is a kind of ion membrane separating process using concentration gradient as mass transfer driving force.Due to having operation letter
List, expense is low, can effectively recycle the advantages such as soda acid, and diffusion dialysis has been successfully applied to titanium white waste acid processing, yarn waste water is boiled in printing and dyeing
In the industries such as processing, the processing of mercerising wash water, for handling acid/base waste liquid and recycling soda acid.It is widely applied with continuous, diffusion
Dialysis also gradually shows some shortcomings.Firstly, diffusion dialysis is using concentration difference as mass transfer driving force, therefore mass transfer flux
It is low, treating capacity is small.
Since diffusion dialysis is using concentration gradient as mass transfer driving force, film two sides solution exists during diffusion dialysis
Permeable pressure head, cause spread side water section penetrate into dialysis side (i.e. " water reverse osmosis "), water penetration phenomenon makes both sides
Concentration difference reduces dialysing compartment concentration and is lower, and reduces the concentration difference of film two sides solution, to reduce mass transfer force, causes to spread
The inefficiency of dialysis；In addition, the reverse osmosis of water increases the volume for spreading raffinate, the burden of post-processing has been aggravated.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of diffusion dialysis processing unit of acid/base waste liquid and its places
Reason method, solving existing diffusion dialysis, there are the reverse osmosis of water, to reduce mass transfer force, lead to the effect of diffusion dialysis
The low technical problem of rate.
(2) technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs:
On the one hand, a kind of diffusion dialysis processing unit of acid/base waste liquid is provided, comprising:
Diffusion dialysis membrane stack, the diffusion dialysis membrane stack includes diffuser casing and dialysing compartment；
Amberplex, the amberplex pass through amberplex between the diffuser casing and dialysing compartment
Form selectivity connection；
Compression system, the compression system include gas device and gas connection pipe, and the gas device is connected by gas
Adapter tube delivers the gas in dialysing compartment.
Preferably, the diffuser casing further include: volume measurement device, the volume measurement device is for measuring in diffuser casing
Liquid volume.
Preferably, the dialysing compartment includes feed inlet.
It preferably, further include first piston, the first piston can be with feed inlet snap fit, the gas connection pipe
Through the first piston, and outlet side is located inside the dialysing compartment.
It preferably, further include two washers, one of washer is fixedly connected with diffuser casing, and a washer and dialysing compartment are solid
Fixed connection；
The amberplex is located between two washers, and is detachably connected between two washers.
It preferably, further include pressure display instrument, the pressure display instrument is located on gas connection pipe.
On the other hand a kind of diffusion dialysis processing method of acid/base waste liquid is also provided, comprising the following steps:
S1: by acid/base waste liquid by being fitted into the dialysing compartment of diffusion dialysis membrane stack (2)；Water is packed into diffusion dialysis
In the diffuser casing (1) of membrane stack；
S2: the gas outlet of the gas connection pipe (401) in compression system is connected to dialysing compartment (2), opens compression system,
Pressure is adjusted, is pressurizeed to dialysing compartment (2).
Preferably, between step S1 and step S2, volume measurement device is connected to the diffuser casing of diffusion dialysis membrane stack.
Preferably, pressure is adjusted in the step S2 to 0~0.2MPa.
Preferably, 0.02~0.15MPa of pressure is adjusted in the step S2.
(3) beneficial effect
The present invention provides a kind of diffusion dialysis processing unit of acid/base waste liquid and processing methods.Compared with prior art,
Have it is following the utility model has the advantages that
The present invention provides a kind of double drive diffusion dialysis processing unit of acid/base waste liquid and processing method, the diffusions
Dialysis membrane stack is made of diffuser casing and dialysing compartment, further comprises compression system；Dialysis chamber pressure is given by compression system, in pressure
Dialysis operation is diffused under the effect of the double drive of difference and concentration difference, it is possible to increase the mass transfer flux of ion, to promote diffusion
The treating capacity of dialysis process, while the reverse osmosis phenomenon of water can also be effectively inhibited, improve diffusion dialysis mass transfer effect.In addition,
Apparatus of the present invention structure is simple and convenient to operate, low energy consumption, does not easily lead to secondary pollution.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the overall structure cross-sectional view of the double drive diffusion dialysis processing unit of acid/base of embodiment of the present invention waste liquid；
Fig. 2 is the washer structure diagram of the double drive diffusion dialysis processing unit of acid/base of embodiment of the present invention waste liquid；
Fig. 3 is the double drive diffusion dialysis processing unit diffuser casing or infiltration of invention embodiment acid/base waste liquid
Analyse the overall structure diagram of room.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, to the technology in the embodiment of the present invention
Scheme is clearly and completely described, it is clear that and described embodiments are some of the embodiments of the present invention, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without creative efforts
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Referring to Fig. 1~3, a kind of diffusion dialysis processing unit of acid/base waste liquid provided in an embodiment of the present invention, comprising:
Amberplex 3, the amberplex 3 are handed between the diffuser casing 1 and dialysing compartment 2, and through ion
It changes film and forms selective connection；The present invention does not have special limitation to the amberplex, ripe using those skilled in the art
The amberplex known is bought by market and is obtained.In the present invention, the diffuser casing 1 of the diffusion dialysis membrane stack or dialysis
The structure of room 2 is the same, as shown in figure 3, being 2 structural schematic diagram of diffuser casing 1 and dialysing compartment of diffusion dialysis membrane stack.The present invention is to expansion
The material for dissipating room 1 and dialysing compartment 2 requires acid-alkali-corrosive-resisting, preferably polymethyl methacrylate (organic glass) material.At this
In the embodiment of invention, the cavity volume of the diffuser casing and dialysing compartment can be equally big, can also be with different big, cavity volume
Size can be 20~500mL；In a further embodiment, the cavity volume of the diffuser casing and dialysing compartment can for 50~
300mL；In other embodiments, the diffuser casing cavity volume can also be 198mL, and the cavity volume of the dialysing compartment is also
It can be 218mL.
Compression system, the compression system include gas device 4 and gas connection pipe 401, and the gas device 4 passes through gas
Body connecting tube 401 delivers the gas in dialysing compartment 2.In present invention specific implementation, the gas device 4 is preferably air pressure
One of contracting machine, air steel cylinder, nitrogen cylinder, oxygen bottle, more preferably air steel cylinder, nitrogen cylinder.In the present invention,
The output pressure of the compression system is preferably 0~0.2MPa, more preferably 0.02~0.15MPa, most preferably 0.04~
0.08MPa。
The diffuser casing 1 further include: volume measurement device 102, the volume measurement device 102 is for measuring diffuser casing 1
The volume of interior liquid.Filler is arranged in upper end in diffuser casing 1 in the specific implementation process, will wear the second work using pipette is used
Second piston 101 and pipette, are then inserted into diffuser casing 1 by plug 101, and filler and second piston 101 cooperate, pipette
Bottom end be located in diffuser casing 1, and when specific operation, the bottom end of pipette will be located at the water surface or less position.Then it is moving
The water that certain volume is added in liquid pipe can be obtained in the transformation of volume due to the principle of linker in diffusion dialysis from pipette
Know the variation of the middle liquid volume of diffuser casing 1.
The dialysing compartment 2 further includes feed inlet 201.
The dialysing compartment 2 further includes first piston 202, the first piston 202 can with 201 snap fit of feed inlet,
The gas connection pipe 401 runs through the first piston 202, and outlet side is located inside the dialysing compartment 2.
For the ease of amberplex 3 is arranged between diffuser casing 1 and dialysing compartment 2, and by diffuser casing 1 and dialysing compartment 2
Connection；The diffusion dialysis processing unit of the acid/base waste liquid further includes two washers 5, and one of washer 5 and diffuser casing 1 are fixed
Connection, a washer 5 are fixedly connected with dialysing compartment 2；
The amberplex 3 is located between two washers 5, and is detachably connected between two washers 5.It was embodied
It can be connected by screw bolts in journey.The two can be connected by four bolts.
It further include pressure display instrument 402, the pressure display instrument 402 is located on gas connection pipe 401, for detecting dialysis
The gas pressure of part on room 2.
When it is implemented, can accurately, successfully pressurize from system to the dialysing compartment 2 of membrane stack for the ease of pressurizeing, it is described
Dialysing compartment 2 can be connected to gas connection pipe 401 by polyfluortetraethylene pipe.
In embodiments of the present invention, can be used in handling acid/base waste liquid.Wherein acid waste liquid is preferably inorganic acid and metal
The mix acid liquor of salt, more preferably hydrochloric acid and frerrous chloride mix acid liquor, hydrochloric acid and aluminium chloride mix acid liquor, hydrochloric acid and iron chloride
The one or more of mix acid liquor, sulfuric acid and ferrous sulfate mix acid liquor, sulfuric acid and aluminum sulfate mix acid liquor, most preferably sulfuric acid
With ferrous sulfate mix acid liquor.In embodiments of the present invention, the acid concentration of the acid waste liquid is preferably 0.1~6mol/L, more
Preferably 0.2~5mol/L, most preferably 0.5~4.5mol/L, the most preferably 0.8~4mol/L；The acid waste liquid
Salinity is preferably 0.1~3mol/L, most preferably 0.2~2.8mol/L, the most preferably 0.3~2.5mol/L.In this hair
In bright embodiment, the alkaline waste liquor is preferably the mixed alkali liquor of inorganic base and metal salt, more preferably sodium hydroxide and wolframic acid
The one or more of sodium mixed alkali liquor, sodium hydroxide and sodium metaaluminate mixed alkali liquor, most preferably sodium hydroxide and sodium tungstate are mixed
Close lye.In embodiments of the present invention, the alkali concentration of the alkaline waste liquor is preferably 0.1~6mol/L, more preferably 0.2~
5mol/L, most preferably 0.3~4.5mol/L, the most preferably 0.5~4mol/L；The salinity of the alkaline waste liquor is preferably
0.02~3mol/L, most preferably 0.02~2.8mol/L, the most preferably 0.05~1.0mol/L.
In embodiments of the present invention, the diffuser casing is for holding water.In the present invention, the water be preferably tap water,
One or more of deionized water, distilled water, pure water, more preferably tap water.
It is rubber with holes that the first piston 101 in above-described embodiment and second piston 202, which use, in the specific implementation process
Rubber plug, on the one hand can increase the leakproofness of device, on the other hand facilitate the connection of pipette and gas connection pipe and device.
On the other hand, the present invention also provides the methods using above-mentioned diffusion dialysis processing unit processing acid/base liquid, including with
Lower step:
S1: by acid/base waste liquid by being fitted into the dialysing compartment 2 of diffusion dialysis membrane stack；Water is packed into diffusion dialysis film
In the diffuser casing 1 of heap；
S2: the gas outlet of the gas connection pipe 401 in compression system is connected to dialysing compartment 2, opens compression system, is adjusted
Pressure pressurizes to dialysing compartment 2.
In specific implementation process, between step S1 and step S2, by volume measurement device 102 and diffusion dialysis membrane stack
Diffuser casing 1 is connected to.
In conjunction with the device and processing method of the present embodiment, in order to facilitate the device of device, while ensuring the leakproofness of device,
A feed opening is only designed in diffuser casing and dialysing compartment, while the feed opening feeds, while passing through first piston and the
Volume detection device and gas connection pipe are connect by two pistons with the cooperation of feed opening with device.
The water in acid/base waste liquid and diffuser casing in the dialysing compartment is acted in the double drive power of pressure difference and concentration difference
It is lower to carry out ion exchange through amberplex, recycling acid/base is obtained in diffuser casing, diffusion raffinate is obtained in dialysing compartment.
The diffusion dialysis processing unit of acid/base waste liquid provided in an embodiment of the present invention, the diffusion dialysis membrane stack is by spreading
Room and dialysing compartment composition, further comprise compression system；Dialysis chamber pressure is given by compression system, in pair of pressure difference and concentration difference
Under weight driving effect, it is possible to increase the mass transfer flux of ion, to promote the treating capacity of diffusion dialysis process, while can also be effectively
Inhibit the reverse osmosis phenomenon of water, improves diffusion dialysis mass transfer effect.In addition, apparatus of the present invention structure is simple and convenient to operate, energy consumption
It is low, do not easily lead to secondary pollution.
In order to further appreciate that the present invention, the acid/base liquid waste processing provided is implemented to the present invention below with reference to embodiment and is filled
It sets and processing method is described in detail.
Embodiment 1
Using the device of above-described embodiment, and amberplex therein 3 uses anion-exchange membrane, effective area
For 21.2cm2。
180mL group is perfused into dialysing compartment 2 becomes the spent acidic of 0.3mol/L ferrous sulfate and 0.9mol/L sulfuric acid concentration
Liquid accounts for about the 87% of 2 volume of dialysing compartment；The deionized water of 180mL is perfused into diffuser casing 1, accounts for about 1 volume of diffuser casing
91%.
Pipette is mounted on 1 feed inlet of diffuser casing by first piston 101, is pressurizeed using nitrogen.
The pressure value of nitrogen cylinder is set as 0MPa, starts to test, and experimental period is 2 hours.
The present embodiment after the end of the experiment, measures diffuser casing 1 and ferrous ion concentration and hydrogen ion in dialysing compartment 2 respectively
Concentration calculates the dialysis coefficent of hydrogen ion and ferrous ion, to calculate separation factor, calculated result is as shown in table 1, and table 1 is
The hydrogen ion (hydroxide ion) and ferrous ion (tungstate ion) dialysis coefficent that 1~embodiment of the embodiment of the present invention 8 calculates
Value and separation factor value.
Embodiment 2
Using the device of embodiment 1.
180mL group is perfused into dialysing compartment 2 becomes the spent acidic of 0.3mol/L ferrous sulfate and 0.9mol/L sulfuric acid concentration
Liquid accounts for about the 87% of 2 volume of dialysing compartment；The deionized water of 180mL is perfused into diffuser casing 1, accounts for about 1 volume of diffuser casing
91%.
Nitrogen pressure force value is set as 0.04MPa, starts to test, and experimental period is 2 hours.
The present embodiment after the end of the experiment, measures diffuser casing 1 and ferrous ion concentration and hydrogen ion in dialysing compartment 2 respectively
Concentration calculates the dialysis coefficent of hydrogen ion and ferrous ion, to calculate separation factor, calculated result is as shown in table 1, and table 1 is
The hydrogen ion (hydroxide ion) and ferrous ion (tungstate ion) dialysis coefficent that 1~embodiment of the embodiment of the present invention 8 calculates
Value and separation factor value.
Embodiment 3
Using the device of embodiment 1.
180mL group is perfused into dialysing compartment 2 becomes the spent acidic of 0.3mol/L ferrous sulfate and 1.8mol/L sulfuric acid concentration
Liquid accounts for about the 87% of 2 volume of dialysing compartment；The deionized water of 180mL is perfused into diffuser casing 1, accounts for about 1 volume of diffuser casing
91%.
The pressure value of nitrogen is set as 0.04MPa, starts to test, and experimental period is 2 hours.
The present embodiment after the end of the experiment, measures diffuser casing 1 and ferrous ion concentration and hydrogen ion in dialysing compartment 2 respectively
Concentration calculates the dialysis coefficent of hydrogen ion and ferrous ion, to calculate separation factor, calculated result is as shown in table 1, and table 1 is
The hydrogen ion (hydroxide ion) and ferrous ion (tungstate ion) dialysis coefficent that 1~embodiment of the embodiment of the present invention 8 calculates
Value and separation factor value.
Embodiment 4
Using the device of embodiment 1.
180mL group is perfused into dialysing compartment 2 becomes the spent acidic of 0.7mol/L ferrous sulfate and 0.9mol/L sulfuric acid concentration
Liquid accounts for about the 87% of 2 volume of dialysing compartment；The deionized water of 180mL is perfused into diffuser casing 1, accounts for about 1 volume of diffuser casing
91%.
Nitrogen pressure force value is set as 0.04MPa, starts to test, and experimental period is 2 hours.
The present embodiment after the end of the experiment, measures diffuser casing 1 and ferrous ion concentration and hydrogen ion in dialysing compartment 2 respectively
Concentration calculates the dialysis coefficent of hydrogen ion and ferrous ion, to calculate separation factor, calculated result is as shown in table 1, and table 1 is
The hydrogen ion (hydroxide ion) and ferrous ion (tungstate ion) dialysis coefficent that 1~embodiment of the embodiment of the present invention 8 calculates
Value and separation factor value.
Embodiment 5
Using the device of embodiment 1.Wherein amberplex uses cation-exchange membrane, effective area 21.2cm2。
180mL group is perfused into dialysing compartment 2 as 1.0mol/L naoh concentration and 0.1mol/L concentration of sodium tungstate
Alkaline waste liquor accounts for about the 87% of 2 volume of dialysing compartment；The deionized water of 180mL is perfused into diffuser casing 1, accounts for about 1 volume of diffuser casing
91%.
Nitrogen pressure force value is set as 0MPa, starts to test, and experimental period is 2 hours.
The present embodiment after the end of the experiment, measures diffuser casing 1 and tungstate ion concentration and hydrogen-oxygen in dialysing compartment 2 respectively
Ion concentration, calculates the dialysis coefficent of tungstate ion and hydroxide ion, so that separation factor is calculated, calculated result such as table
Shown in 1, table 1 be 1~embodiment of the embodiment of the present invention 8 calculate hydrogen ion (hydroxide ion) and ferrous ion (tungstate radicle from
Son) dialysis coefficent value and separation factor value.
Embodiment 6
Using the device of embodiment 5.
180mL group is perfused into dialysing compartment 2 as 1.0mol/L naoh concentration and 0.1mol/L concentration of sodium tungstate
Alkaline waste liquor accounts for about the 87% of 2 volume of dialysing compartment；The deionized water of 180mL is perfused into diffuser casing 1, accounts for about 1 volume of diffuser casing
91%.
Nitrogen pressure force value is set as 0.04MPa, starts to test, and experimental period is 2 hours.
The present embodiment after the end of the experiment, measures diffuser casing 1 and tungstate ion concentration and hydrogen-oxygen in dialysing compartment 2 respectively
Ion concentration, calculates the dialysis coefficent of tungstate ion and hydroxide ion, so that separation factor is calculated, calculated result such as table
Shown in 1, table 1 be 1~embodiment of the embodiment of the present invention 8 calculate hydrogen ion (hydroxide ion) and ferrous ion (tungstate radicle from
Son) dialysis coefficent value and separation factor value.
Embodiment 7
Using the device of embodiment 5.
180mL group is perfused into dialysing compartment 2 as 2.0mol/L naoh concentration and 0.1mol/L concentration of sodium tungstate
Alkaline waste liquor accounts for about the 87% of 2 volume of dialysing compartment；The deionized water of 180mL is perfused into diffuser casing 1, accounts for about 1 volume of diffuser casing
91%.
Nitrogen pressure force value is set as 0.04MPa, starts to test, and experimental period is 2 hours.
The present embodiment after the end of the experiment, measures diffuser casing 1 and tungstate ion concentration and hydrogen-oxygen in dialysing compartment 2 respectively
Ion concentration, calculates the dialysis coefficent of tungstate ion and hydroxide ion, so that separation factor is calculated, calculated result such as table
Shown in 1, table 1 be 1~embodiment of the embodiment of the present invention 8 calculate hydrogen ion (hydroxide ion) and ferrous ion (tungstate radicle from
Son) dialysis coefficent value and separation factor value.
Embodiment 8
Using the device of embodiment 5.
180mL group is perfused into dialysing compartment 2 as 1.0mol/L naoh concentration and 0.05mol/L concentration of sodium tungstate
Alkaline waste liquor accounts for about the 87% of 2 volume of dialysing compartment；The deionized water of 180mL is perfused into diffuser casing 1, accounts for about 1 volume of diffuser casing
91%.
The pressure value of nitrogen cylinder is set as 0.04MPa, starts to test, and experimental period is 2 hours.
The present embodiment after the end of the experiment, measures diffuser casing 1 and tungstate ion concentration and hydrogen-oxygen in dialysing compartment 2 respectively
Ion concentration, calculates the dialysis coefficent of tungstate ion and hydroxide ion, so that separation factor is calculated, calculated result such as table
Shown in 1, table 1 be 1~embodiment of the embodiment of the present invention 8 calculate hydrogen ion (hydroxide ion) and ferrous ion (tungstate radicle from
Son) dialysis coefficent value and separation factor value.
The hydrogen ion (hydroxide ion) and ferrous ion (tungstate ion) of 1 1~embodiment of the embodiment of the present invention 8 of table seep
Analyse coefficient value and separation factor value
By above-mentioned data it is found that in acid system, embodiment 2 has biggish dialysis coefficent, compared to embodiment 1 and in fact
Example 3 is applied, less, effect is best for separation factor variation.And although 4 separation factor of embodiment is much larger, dialysis coefficent compared with
Other embodiments very little, therefore treatment effect is not obvious；In alkali systems, 6 effect of embodiment is best, and separation factor changes not
In the case where big, have preferably dialysis coefficent, treatment effect best.
In conclusion the embodiment of the invention provides a kind of diffusion dialysis processing unit of acid/base waste liquid and processing methods.
Compared with prior art, have it is following the utility model has the advantages that
The embodiment of the invention provides a kind of double drive diffusion dialysis processing unit of acid/base waste liquid and processing method, institutes
It states diffusion dialysis membrane stack to be made of diffuser casing and dialysing compartment, further comprises compression system；Dialysis chamber pressure is given by compression system,
Dialysis operation is diffused under the effect of the double drive of pressure difference and concentration difference, it is possible to increase the mass transfer flux of ion, to mention
The treating capacity of diffusion dialysis process is risen, while the reverse osmosis phenomenon of water can also be effectively inhibited, improves diffusion dialysis mass transfer effect.
In addition, apparatus of the present invention structure is simple and convenient to operate, low energy consumption, does not easily lead to secondary pollution.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of diffusion dialysis processing unit of acid/base waste liquid characterized by comprising
Diffusion dialysis membrane stack, the diffusion dialysis membrane stack include diffuser casing (1) and dialysing compartment (2)；
Amberplex (3), the amberplex (3) between the diffuser casing (1) and dialysing compartment (2), and by from
Proton exchange forms selective connection；
Compression system, the compression system include gas device (4) and gas connection pipe (401), and the gas device (4) passes through
Gas connection pipe (401) delivers the gas in dialysing compartment (2).
2. the diffusion dialysis processing unit of acid/base waste liquid as described in claim 1, which is characterized in that the diffuser casing (1) is also
It include: volume measurement device (102), the volume measurement device (102) is used to measure the volume of the liquid in diffuser casing (1).
3. the diffusion dialysis processing unit of acid/base waste liquid as described in claim 1, which is characterized in that dialysing compartment (2) packet
Include feed inlet (201).
4. the diffusion dialysis processing unit of acid/base waste liquid as claimed in claim 3, which is characterized in that further include first piston
(202), the first piston (202) can be with feed inlet (201) snap fit, and the gas connection pipe (401) is through described
First piston (202), and outlet side is located at the dialysing compartment (2) inside.
5. such as the diffusion dialysis processing unit of the described in any item acid/base waste liquids of Claims 1 to 4, which is characterized in that further include
Two washers (5), one of washer (5) are fixedly connected with diffuser casing (1), a washer (5) and dialysing compartment (2) fixed company
It connects；
The amberplex (3) is located between two washers (5), and is detachably connected between two washers (5).
6. the diffusion dialysis processing unit of acid/base waste liquid as claimed in any one of claims 1 to 5, which is characterized in that further include
Pressure display instrument (402), the pressure display instrument (402) are located on gas connection pipe (401).
7. the diffusion dialysis processing method of acid/base waste liquid as described in any one of claims 1 to 6, which is characterized in that including with
Lower step:
S1: by acid/base waste liquid by being fitted into the dialysing compartment of diffusion dialysis membrane stack (2)；Water is packed into diffusion dialysis membrane stack
Diffuser casing (1) in；
S2: the gas outlet of the gas connection pipe (401) in compression system is connected to dialysing compartment (2), opens compression system, is adjusted
Pressure pressurizes to dialysing compartment (2).
8. the diffusion dialysis processing method of acid/base waste liquid as claimed in claim 7, which is characterized in that in step S1 and step
Between S2, volume measurement device (102) is connected to the diffuser casing (1) of diffusion dialysis membrane stack.
9. the diffusion dialysis processing method of acid/base waste liquid as claimed in claim 7, which is characterized in that adjusted in the step S2
Pressure is saved to 0~0.2MPa.
10. the diffusion dialysis processing method of acid/base waste liquid as claimed in claim 7, which is characterized in that adjusted in the step S2
Save 0.02~0.15MPa of pressure.
Priority Applications (1)
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| CN111603799A (en) * | 2020-04-26 | 2020-09-01 | 中国科学院青岛生物能源与过程研究所 | Method for reducing membrane resistance in membrane extraction process |
| CN112062218A (en) * | 2020-09-02 | 2020-12-11 | 合肥工业大学 | Device for continuously treating acid/alkali waste liquid and treatment method thereof |
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| CN111603799A (en) * | 2020-04-26 | 2020-09-01 | 中国科学院青岛生物能源与过程研究所 | Method for reducing membrane resistance in membrane extraction process |
| CN112062218A (en) * | 2020-09-02 | 2020-12-11 | 合肥工业大学 | Device for continuously treating acid/alkali waste liquid and treatment method thereof |
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Application publication date: 20190118 |