CN216336912U - Active burnt SOx/NOx control waste water salt processing system - Google Patents
Active burnt SOx/NOx control waste water salt processing system Download PDFInfo
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- CN216336912U CN216336912U CN202122506008.3U CN202122506008U CN216336912U CN 216336912 U CN216336912 U CN 216336912U CN 202122506008 U CN202122506008 U CN 202122506008U CN 216336912 U CN216336912 U CN 216336912U
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Abstract
The utility model discloses an active coke desulfurization and denitrification waste water salinity treatment system, which comprises a primary nano filter, a secondary nano filter and reverse osmosis equipment, wherein the primary nano filter is connected with the secondary nano filter; the import that the filter was received to the one-level is used for connecting active burnt SOx/NOx control waste water source, and the import that reverse osmosis equipment was connected to the product mouth of water that the filter was received to the one-level, and the import that the filter was received to the second grade is connected to the dense mouth of water that the filter was received to the one-level, and the import that reverse osmosis equipment was connected to the product mouth of water that the filter was received to the second grade, and reverse osmosis equipment's product mouth of water is connected the import that the filter was received to the second grade. The utility model not only can eliminate the problem of equipment corrosion caused by the reuse of the wastewater, but also can eliminate the problem of new environmental pollution caused by dangerous waste generated by the subsequent evaporation and crystallization of the wastewater.
Description
Technical Field
The utility model belongs to the field of zero emission of flue gas active coke desulfurization and denitrification wastewater, and relates to an active coke desulfurization and denitrification wastewater salt treatment system.
Background
The information in this background section is only for enhancement of understanding of the general background of the utility model and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.
At present, flue gas active coke desulfurization and denitrification engineering wastewater is basically sent to a blast furnace for slag flushing after being simply neutralized, but the active coke desulfurization and denitrification wastewater has high salt content, especially high chloride ions. The use of the part of waste water can seriously corrode the slag flushing equipment, the stable operation of the blast furnace slag flushing equipment is influenced, and meanwhile, the high chloride ions can influence the product quality of the granulated slag.
According to the research of the inventor, the existing system for treating the active coke desulfurization and denitrification wastewater is based on evaporative crystallization mixed salt extraction, but the water quality components of the flue gas active coke desulfurization and denitrification engineering wastewater are very complex and cannot be safely and stably operated, the generated mixed salt belongs to dangerous waste, the treatment cost is very high, and the environment is not friendly.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model aims to provide an active coke desulfurization and denitrification waste water salt and water treatment system, which can not only eliminate the problem of equipment corrosion caused by waste water recycling, but also eliminate the new environmental pollution problem caused by dangerous waste generated by subsequent evaporation and crystallization of waste water.
In order to achieve the purpose, the technical scheme of the utility model is as follows:
an active coke desulfurization and denitrification waste water salinity treatment system comprises a primary nano filter, a secondary nano filter and reverse osmosis equipment; the import that the filter was received to the one-level is used for connecting active burnt SOx/NOx control waste water source, and the import that reverse osmosis equipment was connected to the product mouth of water that the filter was received to the one-level, and the import that the filter was received to the second grade is connected to the dense mouth of water that the filter was received to the one-level, and the import that reverse osmosis equipment was connected to the product mouth of water that the filter was received to the second grade, and reverse osmosis equipment's product mouth of water is connected the import that the filter was received to the second grade.
The utility model carries out primary nanofiltration through a primary nanofiltration device to separate univalent and bivalent ions in the wastewater. And (4) the water produced by the first-stage nanofiltration enters reverse osmosis equipment for reverse osmosis desalination, and the water produced after the reverse osmosis desalination is used as reuse water. And part of the reuse water flows back to the secondary nano filter to wash the concentrated water subjected to the primary nanofiltration, secondary nanofiltration is carried out in the secondary nano filter after washing, monovalent and divalent ions are separated again, the produced water subjected to the secondary nanofiltration also enters reverse osmosis equipment to be subjected to reverse osmosis desalination, and the concentrated water subjected to the secondary nanofiltration is reused as the miscellaneous water.
And the filter is used for removing suspended matters in the water and is arranged between the primary nano filter and the active coke desulfurization and denitrification wastewater source. Used for reducing turbidity, COD and the like in the incoming water.
Further, the device comprises a nanofiltration water production tank, wherein a water inlet of the nanofiltration water production tank is connected with a water production port of the primary nanofiltration device, and a water outlet of the nanofiltration water production tank is connected with an inlet of the reverse osmosis device.
Furthermore, a water production port of the secondary nano filter is connected with a water inlet of the nano-filtration water production tank.
Further, the device comprises a primary nanofiltration concentrated water tank, wherein a water inlet of the primary nanofiltration concentrated water tank is connected with a concentrated water port of the primary nanofiltration device, and an outlet of the primary nanofiltration concentrated water tank is connected with an inlet of the secondary nanofiltration device.
Furthermore, a water production port of the reverse osmosis equipment is connected with a first-stage nanofiltration concentrated water tank. The one-level nanofiltration concentrated water tank can better wash the one-level nanofiltration concentrated water.
Further, the device comprises a reverse osmosis water production tank, wherein an inlet of the reverse osmosis water production tank is connected with a water production port of a reverse osmosis device.
Furthermore, the water outlet of the reverse osmosis water production tank is connected with the inlet of the first-stage nanofiltration concentrated water tank, and the outlet of the first-stage nanofiltration concentrated water tank is connected with the inlet of the second-stage nanofiltration device.
Further, a concentrated water port of the reverse osmosis equipment is used for connecting an evaporative crystallization system.
Furthermore, the inlet of the first-stage nano filter, the inlet of the second-stage nano filter and the inlet of the reverse osmosis equipment are all provided with water pumps. The device is used for pressurizing nanofiltration and reverse osmosis, and better realizes nanofiltration and reverse osmosis.
The utility model has the beneficial effects that:
1. the method comprises the steps of performing primary nanofiltration through a primary nanofiltration filter and a secondary nanofiltration filter, and continuously performing secondary nanofiltration on concentrated water subjected to the primary nanofiltration to realize the separation of monovalent ions and divalent ions; the divalent separation of the positive ions ensures that the subsequent reverse osmosis system does not generate the problems of scaling and the like, the continuous and stable operation is realized, the divalent separation of the negative ions ensures that the subsequent evaporative crystalline salt has relatively single component, and the product purity is high.
2. The utility model uses the water produced by the reverse osmosis part for the water washing of the secondary nanofiltration device, thereby increasing the water washing process of nanofiltration, reducing the monovalent ion content, especially the chloride ion content, of the final concentrated water, and preventing the use of the concentrated water from generating corrosion phenomena of equipment, pipelines and the like.
3. The present invention can realize the maximum recovery rate of the system and reduce the water consumption to be extremely low.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model.
FIG. 1 is a schematic structural diagram of an activated coke desulfurization and denitrification waste water salt treatment system according to an exemplary embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an activated coke desulfurization and denitrification waste water salinity treatment system in example 1 of the present invention;
the system comprises a raw water tank, a filter, a first-stage nanofiltration device, a nanofiltration water production tank, a first-stage nanofiltration concentrated water tank, a reverse osmosis device, a reverse osmosis concentrated water tank, a reverse osmosis water production tank, a second-stage nanofiltration device and a second-stage nanofiltration concentrated water tank, wherein the raw water tank is 1, the filter is 2, the first-stage nanofiltration device is 3, the second-stage nanofiltration device is 4, the first-stage nanofiltration concentrated water tank is 5, the reverse osmosis device is 6, the reverse osmosis concentrated water tank is 7, the reverse osmosis water production tank is 8, the second-stage nanofiltration concentrated water tank is 9, and the second-stage nanofiltration concentrated water tank is 10.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the utility model as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the utility model. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The utility model provides an active coke desulfurization and denitrification waste water salt-separating treatment system, which aims to solve the problems that the prior active coke desulfurization and denitrification waste water is high in salt content and complex in components, the waste water serving as reuse water has equipment corrosion problem, and the mixed salt generated after evaporation crystallization is difficult to further treat.
In a typical embodiment of the present invention, an activated coke desulfurization and denitrification wastewater salinity treatment system is provided, as shown in fig. 1, comprising a primary nano-filter 3, a secondary nano-filter 9 and a reverse osmosis apparatus 6; the import that filter 3 was received to the one-level is used for connecting active burnt SOx/NOx control waste water source, and the import that reverse osmosis equipment 6 was connected to the product water gap that filter 3 was received to the one-level, and the import that filter 9 was received to the second grade is connected to the dense mouth of a river that filter 3 was received to the one-level, and the import that reverse osmosis equipment 6 was connected to the product water gap that filter 9 was received to the second grade, and reverse osmosis equipment 6's product water gap is connected the import that filter 9 was received to the second grade.
The utility model carries out primary nanofiltration through a primary nanofiltration device to separate univalent and bivalent ions in the wastewater. And (4) the water produced by the first-stage nanofiltration enters reverse osmosis equipment for reverse osmosis desalination, and the water produced after the reverse osmosis desalination is used as reuse water. And part of the reuse water flows back to the secondary nano filter to wash the concentrated water subjected to primary nanofiltration, so that the further recovery of the chloride ions in the concentrated water is realized, secondary nanofiltration is performed in the secondary nano filter after the washing, monovalent and divalent ions are separated again, the produced water subjected to secondary nanofiltration also enters reverse osmosis equipment to be subjected to reverse osmosis desalination, the content of the chloride ions in the concentrated water subjected to secondary nanofiltration is greatly reduced, and the concentrated water can be directly reused as the service water.
In order to avoid the influence of the suspended matters in the water on the nano-filtration effect, in some embodiments, a filter is included, and the filter is used for removing the suspended matters in the water and is arranged between the primary nano-filter and the active coke desulfurization and denitrification wastewater source. Is used for reducing turbidity, COD and the like in the incoming water and improving the nanofiltration effect.
In order to avoid the difference between the water produced by the primary nanofiltration and the water treated by the reverse osmosis equipment, in some embodiments, the reverse osmosis membrane comprises a nanofiltration water production tank, a water inlet of the nanofiltration water production tank is connected with a water production port of the primary nanofiltration, and a water outlet of the nanofiltration water production tank is connected with an inlet of the reverse osmosis equipment. The first-stage nanofiltration water production is buffered by the nanofiltration water production tank, and the water inflow of the reverse osmosis equipment is adjusted.
In one or more embodiments, the water production port of the secondary nano filter is connected with the water inlet of the nano-filtration water production tank.
In order to buffer the primary nanofiltration concentrated water, in some embodiments, the primary nanofiltration concentrated water tank is included, a water inlet of the primary nanofiltration concentrated water tank is connected with a concentrated water inlet of the primary nanofiltration device, and an outlet of the primary nanofiltration concentrated water tank is connected with an inlet of the secondary nanofiltration device.
In one or more embodiments, the water production port of the reverse osmosis device is connected with the first-stage nanofiltration concentrated water tank. The one-level nanofiltration concentrated water tank can better wash the one-level nanofiltration concentrated water.
In some embodiments, the reverse osmosis water production tank is included, and an inlet of the reverse osmosis water production tank is connected with a water production port of the reverse osmosis equipment. Can store reverse osmosis produced water, can adjust the washing water yield and the reuse water yield better.
In one or more embodiments, the water outlet of the reverse osmosis water production tank is connected with the inlet of the first-stage nanofiltration concentrated water tank, and the outlet of the first-stage nanofiltration concentrated water tank is connected with the inlet of the second-stage nanofiltration device.
In some embodiments, the concentrate port of the reverse osmosis apparatus is used in connection with an evaporative crystallization system.
In some embodiments, the inlet of the primary nanofilter, the inlet of the secondary nanofilter and the inlet of the reverse osmosis device are provided with water pumps. The device is used for pressurizing nanofiltration and reverse osmosis, and better realizes nanofiltration and reverse osmosis.
In order to make the technical solutions of the present invention more clearly understood by those skilled in the art, the technical solutions of the present invention will be described in detail below with reference to specific embodiments.
Example 1
The utility model provides an active burnt SOx/NOx control waste water divides salt processing system, as shown in figure 2, include that former water tank 1, filter 2, one-level receive the filter 3, receive to strain and produce water tank 4, one-level receive and strain concentrated water tank 5, reverse osmosis equipment 6, reverse osmosis concentrated water tank 7, reverse osmosis and produce water tank 8, second grade receive the filter 9, concentrated water receive concentrated water tank 10, the import of filter 2, the import of one-level receive the filter 3, the import of reverse osmosis equipment 6 and the import of second grade receive the filter 9 all set up the water pump.
Active burnt SOx/NOx control waste water gets into former water tank 1 after the pretreatment removes hard silicon fluoride ion that removes, promote and get rid of remaining suspended solid in the aquatic through filter 2, reduce the turbidity simultaneously, COD pressurizes behind the entering one-level and receives filter 3, receive the monovalent of filter membrane in to aquatic through the one-level, divalent ion separates, with chloride ion, sodium ion is main one-level and is received the product water and get into and receive and strain product water tank 4, contain sulfate ion, chloride ion, sodium ion, the dense water of other high valence positive ions gets into one-level and receives the concentrated water tank 5 of straining.
The water produced by the first-stage nanofiltration enters a reverse osmosis device 6 for desalination under pressure, the reverse osmosis concentrated water enters a reverse osmosis concentrated water tank 7 for direct lifting and enters an evaporative crystallization system, and the high-pressure reverse osmosis produced water with greatly reduced salt content enters a reverse osmosis produced water tank 8 for reuse as industrial fresh water.
The reverse osmosis water produced in the reverse osmosis water producing tank 8 partially flows back to the primary nanofiltration concentrated water tank 5 to be washed by secondary nanofiltration, 2-8 times of water washing can be carried out according to the condition of raw water, and the mixed solution enters a secondary nanofiltration device 9 to be separated into monovalent ions and divalent ions again; the produced water also enters a nanofiltration water production tank 4, the concentrated water enters a secondary nanofiltration concentrated water tank 10, and the concentrated water in the nanofiltration concentrated water tank 10 is recycled as the miscellaneous water.
The system can effectively improve the overall recovery rate of the active coke desulfurization and denitrification waste water and salt, and can stably reach 90 percent or even higher.
And (4) nanofiltration and water washing of the concentrated water are performed, so that sodium chloride is further recovered, the chloride ion content of the final concentrated water is effectively reduced, and the corrosivity is reduced.
The reverse osmosis water is used as a water washing source, the internal part is recycled, the effective balance is established, and the water quantity of the system is not additionally increased.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An active coke desulfurization and denitrification waste water salinity treatment system is characterized by comprising a primary nano filter, a secondary nano filter and reverse osmosis equipment; the import that the filter was received to the one-level is used for connecting active burnt SOx/NOx control waste water source, and the import that reverse osmosis equipment was connected to the product mouth of water that the filter was received to the one-level, and the import that the filter was received to the second grade is connected to the dense mouth of water that the filter was received to the one-level, and the import that reverse osmosis equipment was connected to the product mouth of water that the filter was received to the second grade, and reverse osmosis equipment's product mouth of water is connected the import that the filter was received to the second grade.
2. The activated coke desulfurization and denitrification wastewater salinity treatment system according to claim 1, which comprises a filter for removing suspended matters in water, wherein the filter is arranged between the primary nanofiltration device and the activated coke desulfurization and denitrification wastewater source.
3. The system of claim 1, comprising a nanofiltration water tank, wherein the inlet of the nanofiltration water tank is connected to the water outlet of the first nanofiltration device, and the outlet of the nanofiltration water tank is connected to the inlet of the reverse osmosis device.
4. The system of claim 3, wherein the water inlet of the nanofiltration water tank is connected to the water outlet of the secondary nanofiltration device.
5. The system of claim 1, comprising a concentrated water tank for nanofiltration, wherein the water inlet of the concentrated water tank is connected to the concentrate inlet of the first nanofiltration device, and the outlet of the concentrated water tank is connected to the inlet of the second nanofiltration device.
6. The system for treating the active coke desulfurization and denitrification wastewater with the salt, as recited in claim 5, wherein a water production port of the reverse osmosis apparatus is connected with a first-stage nanofiltration concentrated water tank.
7. The activated coke desulfurization and denitrification wastewater salinity treatment system according to claim 1, which comprises a reverse osmosis water production tank, wherein an inlet of the reverse osmosis water production tank is connected with a water production port of a reverse osmosis device.
8. The system of claim 7, wherein the water outlet of the reverse osmosis water production tank is connected to the inlet of the first-stage nanofiltration concentrated water tank, and the outlet of the first-stage nanofiltration concentrated water tank is connected to the inlet of the second-stage nanofiltration device.
9. The system for treating the moisture and the salt in the desulfurization and the denitrification of the activated coke as set forth in claim 1, wherein a concentrate port of the reverse osmosis apparatus is connected to the evaporative crystallization system.
10. The system for treating the waste water containing the salt and the sulfur and the nitrogen in the activated coke desulfurization and denitrification facility as claimed in claim 1, wherein the inlet of the primary nano-filter, the inlet of the secondary nano-filter and the inlet of the reverse osmosis device are provided with water pumps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122506008.3U CN216336912U (en) | 2021-10-18 | 2021-10-18 | Active burnt SOx/NOx control waste water salt processing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122506008.3U CN216336912U (en) | 2021-10-18 | 2021-10-18 | Active burnt SOx/NOx control waste water salt processing system |
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| CN216336912U true CN216336912U (en) | 2022-04-19 |
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| CN202122506008.3U Active CN216336912U (en) | 2021-10-18 | 2021-10-18 | Active burnt SOx/NOx control waste water salt processing system |
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