CN218810940U - High hydrochloric acid solution recovery processing system - Google Patents
High hydrochloric acid solution recovery processing system Download PDFInfo
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- CN218810940U CN218810940U CN202221615400.XU CN202221615400U CN218810940U CN 218810940 U CN218810940 U CN 218810940U CN 202221615400 U CN202221615400 U CN 202221615400U CN 218810940 U CN218810940 U CN 218810940U
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Abstract
The utility model discloses a high hydrochloric acid solution recovery processing system, which comprises a filtering system, an electrochemical ion recombination device and an electrodialysis recycling processing system, wherein the filtering system is connected with the bipolar membrane electrodialysis recycling processing system through the electrochemical ion recombination device; the filtering system comprises a filtering device and an ultrafiltration device, and the ultrafiltration device is connected with the filtering device; the electrodialysis recycling treatment system comprises a bipolar membrane electrodialysis A and a bipolar membrane electrodialysis B, and the bipolar membrane electrodialysis A and the bipolar membrane electrodialysis B are both connected with an electrochemical ion flushing device, and the utility model belongs to the technical field of sewage treatment; the utility model discloses can be through filtering high salt waste water many times to utilize electrochemistry ion recombination device to carry out the ion recombination to the chemical in the waste water, then carry out the reaction recovery to the waste water that contains recombination ion through electrodialysis resourceful treatment system.
Description
Technical Field
The utility model belongs to the technical field of sewage treatment, especially, relate to a high hydrochloric acid solution recovery processing system.
Background
In the industrial production process, a large amount of high-salt wastewater can be generated, such as thermal power plant desulfurization wastewater, ion exchange resin regenerated acid-base wastewater, coal chemical wastewater, high-salt wastewater generated in an industrial park and the like, and the high-salt wastewater has the characteristics of complex components, unstable water quality and water quantity and the like, so that the high-salt wastewater is high in treatment difficulty and treatment cost, and the crystallized salt generated after zero discharge treatment is difficult to treat.
The conventional high-salinity wastewater treatment mode at present comprises a conventional chemical neutralization and precipitation technology, a concentration and decrement treatment technology, a zero-emission treatment technology and the like.
The existing high-salinity wastewater concentration and reduction and zero-emission treatment system faces larger operation cost pressure and the problem of byproduct treatment and disposal, and the engineering application of the system is limited to a certain extent.
SUMMERY OF THE UTILITY MODEL
To the deficiency of the prior art, the utility model provides a high hydrochloric acid solution recovery processing system has solved above-mentioned problem.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a high-hydrochloric acid solution recovery treatment system comprises a filtering system, an electrochemical ion recombination device and an electrodialysis recycling treatment system, wherein the filtering system is connected with the bipolar membrane electrodialysis recycling treatment system through the electrochemical ion recombination device;
the filtering system comprises a filtering device and an ultrafiltration device, and the ultrafiltration device is connected with the filtering device;
the electrodialysis recycling treatment system comprises a bipolar membrane electrodialysis A and a bipolar membrane electrodialysis B, and the bipolar membrane electrodialysis A and the bipolar membrane electrodialysis B are connected with the electrochemical ion flushing device.
On the basis of the technical scheme, the utility model discloses still provide following optional technical scheme:
the further technical scheme is as follows: and the filtering system is connected with a precipitation system for precipitating the wastewater.
The further technical scheme is as follows: the filtering device and the ultrafiltration device adopt any one of sand filtration, multi-medium filtration, active carbon filtration and disc filtration.
The further technical scheme is as follows: the sedimentation system comprises a sedimentation device and a sludge dewatering device, the sedimentation device is connected with the sludge dewatering device, and the sedimentation device is connected with the filtering device.
The further technical scheme is as follows: the electrochemical ion recombination device can concentrate high-salinity wastewater under the condition of removing calcium and magnesium ions without adding chemicals and softening.
The further technical scheme is as follows: the concentrations of the acid solution and the alkali solution generated after the hydrochloride solution is treated by the bipolar membrane electrodialysis A can reach more than 0.3mol/L, and the concentrations of the acid solution and the alkali solution generated after the sulfate solution is treated by the bipolar membrane electrodialysis B5 can reach more than 0.15mol/L and 0.3mol/L respectively.
The further technical scheme is as follows: the salt content of fresh water generated by the electrochemical ion recombination device is less than or equal to 1000mg/L, the salt content of a hydrochloride solution generated by the electrochemical ion recombination device is more than 100000mg/L, and the salt content of a sulfate solution generated by the electrochemical ion recombination device is more than 120000 mg/L.
The further technical scheme is as follows: the turbidity of the effluent treated by the ultrafiltration device is less than or equal to 1NTU, and SDI is less than or equal to 3.
Advantageous effects
The utility model provides a high hydrochloric acid solution recovery processing system. Compared with the prior art, the method has the following beneficial effects:
1. high-salinity wastewater is filtered by a filtering device 1 and an ultrafiltration device 2 in sequence, backwash water in the ultrafiltration device 2 flows back to the filtering device 1, filtered liquid enters an electrochemical ion recombination device 3 for ion recombination, hydrochloride and sulfate generated by the electrochemical ion recombination device 3 respectively enter a bipolar membrane electrodialysis A4 and a bipolar membrane electrodialysis B5 for reaction, HCl solution and NaOH and Ca (OH) are generated in the bipolar membrane electrodialysis A4 2 And the mixed solution is reused as acid and alkali, and H generated by bipolar membrane electrodialysis B5 2 SO 4 The solution and the NaOH solution are reused as acid and alkali, and the arrangement aims to realize the technical effect of recycling the high-salt wastewater in a mode of carrying out ion recombination and electrodialysis reaction on the high-salt wastewater;
2. the backwash water of filter equipment 1 gets into sediment device 6 and carries out the sedimentation tank and handle, and sediment device 6's supernatant returns filter equipment 1 and handles, and sediment device 6's mud gets into the sludge dewaterer and handles, and the aim at of this kind of setting is through the backwash water that produces filter equipment 1 sediment the mode that drags mud, realizes carrying out recycle's technological effect to backwash water.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Notations for reference numerals: 1. a filtration device; 2. an ultrafiltration device; 3. an electrochemical ion recombination device; 4. bipolar membrane electrodialysis A; 5. bipolar membrane electrodialysis B; 6. a precipitation device; 7. a sludge dewatering device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following detailed description is provided for the specific embodiments of the present invention.
Please refer to fig. 1, which is an embodiment of the present invention, a high hydrochloric acid solution recycling system, which includes a filtering system, an electrochemical ion recombination device 3 and an electrodialysis recycling system, wherein the filtering system is connected to the bipolar membrane electrodialysis recycling system through the electrochemical ion recombination device 3;
the filtering system comprises a filtering device 1 and an ultrafiltration device 2, and the ultrafiltration device 2 is connected with the filtering device 1;
the electrodialysis recycling treatment system comprises a bipolar membrane electrodialysis A4 and a bipolar membrane electrodialysis B5, and the bipolar membrane electrodialysis A4 and the bipolar membrane electrodialysis B5 are connected with the electrochemical ion flushing device.
Preferably, the concentrations of the acid solution and the alkali solution generated after the hydrochloride solution is treated by the bipolar membrane electrodialysis A4 can reach more than 0.3mol/L, and the concentrations of the acid solution and the alkali solution generated after the sulfate solution is treated by the bipolar membrane electrodialysis B5 can reach more than 0.15mol/L and more than 0.3mol/L respectively. Acid liquor and alkali liquor generated by the bipolar membrane electrodialysis recycling treatment can be directly recycled, and the purpose of the arrangement is to realize recycling treatment and zero discharge of wastewater.
Preferably, the filter device 1 and the ultrafiltration device 2 employ any one of sand filtration, multi-media filtration, activated carbon filtration, and disc filtration.
Preferably, the turbidity of effluent treated by the ultrafiltration device 2 is less than or equal to 1NTU, and the SDI is less than or equal to 3, so that the water inlet requirement of the ultrafiltration device 2 is met;
preferably, the precipitation device 6 can perform precipitation treatment on backwash water of the filtering device 1 (flocculant, coagulant aid and other agents can be added if necessary to improve precipitation efficiency), the hydraulic retention time is more than or equal to 8 hours, the turbidity of supernatant is less than or equal to 10NTU, and the water content of sludge is less than or equal to 95%;
preferably, the sludge dewatering device 7 can dewater sludge to produce a sludge cake with water content less than or equal to 5%.
Preferably, the electrochemical ion recombination device 3 can concentrate the high-salinity wastewater without adding chemicals to soften and remove calcium and magnesium ions. The device aims to carry out softening-free pretreatment deep concentration on the high-salinity wastewater, and remarkably reduces the concentration treatment cost of the high-salinity wastewater.
The embodiment of the utility model provides an in, high salt waste water is successively filtered through filter equipment 1 and ultrafiltration device 2, backwash water among the ultrafiltration device 2 flows back to filter equipment 1 and the liquid after the filtration gets into electrochemical ion recombination device 3 and carries out the ion recombination, the hydrochloric acid salt and the sulfate that electrochemical ion recombination device 3 produced get into respectively and react in bipolar membrane electrodialysis A4 and the bipolar membrane electrodialysis B5, produce HCl solution and NaOH and Ca (OH) in the bipolar membrane electrodialysis A4 2 And the mixed solution is reused as acid and alkali, and H generated by bipolar membrane electrodialysis B5 2 SO 4 The solution and the NaOH solution are reused as acid and alkali, and the arrangement aims to realize the technical effect of recycling the high-salt wastewater by means of ion recombination and electrodialysis reaction on the high-salt wastewater.
Referring to fig. 1, as an embodiment of the present invention, a settling system for settling wastewater is connected to the filtering system.
Preferably, the sedimentation system comprises a sedimentation device 6 and a sludge dewatering device 7, the sedimentation device 6 is connected with the sludge dewatering device 7, and the sedimentation device 6 is connected with the filtering device 1. The backwash water of filter equipment 1 gets into sediment device 6 and carries out the sedimentation tank and handle, and sediment device 6's supernatant returns filter equipment 1 and handles, and sediment device 6's mud gets into the sludge dewaterer and handles, and the aim at of this kind of setting is through the backwash water that produces filter equipment 1 sediment the mode that drags mud, realizes carrying out recycle's technological effect to backwash water.
In the embodiment of the present invention, the purpose of this arrangement is to recycle the backwash water generated by the filter device 1.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The high-hydrochloric-acid solution recovery treatment system is characterized by comprising a filtering system, an electrochemical ion recombination device (3) and an electrodialysis recycling treatment system, wherein the filtering system is connected with the bipolar membrane electrodialysis recycling treatment system through the electrochemical ion recombination device (3);
the filtering system comprises a filtering device (1) and an ultrafiltration device (2), wherein the ultrafiltration device (2) is connected with the filtering device (1);
the electrodialysis recycling treatment system comprises a bipolar membrane electrodialysis A (4) and a bipolar membrane electrodialysis B (5), and the bipolar membrane electrodialysis A (4) and the bipolar membrane electrodialysis B (5) are connected with an electrochemical ion flushing device.
2. The high hydrochloric acid solution recovery processing system according to claim 1, wherein a precipitation system for precipitating wastewater is connected to the filtration system.
3. The high hydrochloric acid solution recovery processing system according to claim 1, characterized in that the filtering device (1) and the ultrafiltration device (2) adopt any one of sand filtration, multi-media filtration, activated carbon filtration and disc filtration.
4. The high hydrochloric acid solution recovery processing system according to claim 2, characterized in that the precipitation system comprises a precipitation device (6) and a sludge dewatering device (7), the precipitation device (6) is connected with the sludge dewatering device (7), and the precipitation device (6) is connected with the filtering device (1).
5. The high hydrochloric acid solution recovery processing system according to claim 1, wherein the turbidity of the treated water by the ultrafiltration device (2) is less than or equal to 1NTU, and SDI is less than or equal to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221615400.XU CN218810940U (en) | 2022-06-27 | 2022-06-27 | High hydrochloric acid solution recovery processing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221615400.XU CN218810940U (en) | 2022-06-27 | 2022-06-27 | High hydrochloric acid solution recovery processing system |
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| Publication Number | Publication Date |
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| CN218810940U true CN218810940U (en) | 2023-04-07 |
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| CN202221615400.XU Active CN218810940U (en) | 2022-06-27 | 2022-06-27 | High hydrochloric acid solution recovery processing system |
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- 2022-06-27 CN CN202221615400.XU patent/CN218810940U/en active Active
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