CN112591854A - Contrast medium mother liquor organic iodine recovery device - Google Patents
Contrast medium mother liquor organic iodine recovery device Download PDFInfo
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- CN112591854A CN112591854A CN202011559695.9A CN202011559695A CN112591854A CN 112591854 A CN112591854 A CN 112591854A CN 202011559695 A CN202011559695 A CN 202011559695A CN 112591854 A CN112591854 A CN 112591854A
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- desalination
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- desalting
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- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 229910052740 iodine Inorganic materials 0.000 title claims abstract description 48
- 239000011630 iodine Substances 0.000 title claims abstract description 48
- 239000012452 mother liquor Substances 0.000 title claims abstract description 38
- 239000002872 contrast media Substances 0.000 title claims abstract description 32
- 238000011084 recovery Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000012528 membrane Substances 0.000 claims abstract description 13
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 6
- 239000011780 sodium chloride Substances 0.000 claims abstract description 6
- 238000010612 desalination reaction Methods 0.000 claims description 100
- 239000007788 liquid Substances 0.000 claims description 91
- 238000011033 desalting Methods 0.000 claims description 74
- 239000012267 brine Substances 0.000 claims description 50
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 49
- 238000004094 preconcentration Methods 0.000 claims description 32
- 238000011010 flushing procedure Methods 0.000 claims description 17
- 230000001105 regulatory effect Effects 0.000 claims description 15
- 239000012141 concentrate Substances 0.000 claims description 12
- 238000001728 nano-filtration Methods 0.000 claims description 11
- 230000001276 controlling effect Effects 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 8
- 239000006052 feed supplement Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 9
- 239000010413 mother solution Substances 0.000 abstract description 4
- 238000002425 crystallisation Methods 0.000 abstract description 3
- 230000008025 crystallization Effects 0.000 abstract description 3
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 abstract description 3
- 150000003839 salts Chemical class 0.000 description 8
- 238000012544 monitoring process Methods 0.000 description 7
- 239000002351 wastewater Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- 238000003795 desorption Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- 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
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/36—Organic compounds containing halogen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/40—Liquid flow rate
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Abstract
The invention relates to a device for recovering organic iodine in a contrast agent mother solution, relates to the technical field of water treatment, and is used for solving the problem of enrichment and recovery of the organic iodine in the contrast agent mother solution. According to the contrast agent mother liquor organic iodine recovery device, the organic iodide and the saline water can be effectively separated through the membrane process, the enriched organic iodine can be further recycled, the separated saline water can be further subjected to deepening treatment, and the problems in the traditional crystallization process can be solved.
Description
Technical Field
The invention relates to the technical field of water treatment, in particular to a contrast agent mother liquor organic iodine recovery device.
Background
When the contrast agent mother liquor wastewater is treated, the contrast agent mother liquor wastewater contains organic iodine, the precipitation of iodine simple substance can destroy the flora of a biochemical system, the operation of the biochemical system is not facilitated, and meanwhile, macromolecular organic matters are difficult to carry out biochemical treatment, so that the enrichment of the organic iodine in the wastewater is a key problem. The organic iodine is effectively separated from other waste water by enrichment, the enriched organic iodine can be recovered for further resource utilization, the waste water is desalted and recycled, and the salt can be further resource treated by evaporation and solidification treatment. At present, the treatment of the contrast agent mother liquor mostly adopts an evaporation crystallization process, because the content of organic matters in the wastewater is high, organic iodine and salt cannot be separated in the evaporation process, crystalline salt is difficult to produce, a multi-effect evaporator cannot be used, only a kettle can be adopted for evaporation, and the operation cost is high.
Disclosure of Invention
The invention provides a device for recovering organic iodine in a contrast agent mother solution, which is used for solving the problem of enriching and recovering the organic iodine in the contrast agent mother solution.
The invention relates to a contrast agent mother liquor organic iodine recovery device, which comprises a pretreatment unit for pretreating a contrast agent mother liquor, a desalination preconcentration unit connected with the pretreatment unit, a concentration unit connected with the desalination preconcentration unit, a brine tank and an organic iodine liquid tank, wherein the concentration unit is connected with the desalination preconcentration unit;
wherein, the separated monovalent brine in the desalting and pre-concentrating unit enters a brine tank;
when the liquid in the desalination pre-concentration unit meets a first preset condition, the desalination pre-concentration unit is communicated with the concentration unit, so that the feed liquid in the desalination pre-concentration unit is input into the concentration unit for further concentration treatment;
the treated monovalent saline water in the concentration desalting unit also enters a saline water tank;
when the liquid in the concentration desalting unit meets a second preset condition, the concentration desalting unit stops the concentration operation and feeds the feed liquid into the organic iodine liquid tank.
In one embodiment, the first predetermined condition is that the concentration rate reaches a first predetermined value;
the second predetermined condition is that the concentration rate reaches a second predetermined value.
In one embodiment, the desalination preconcentration unit comprises a desalination tank and a desalination device, between which a liquid can be recycled;
a booster pump and a high-pressure pump are sequentially connected between the desalting tank and the desalting device so as to pump the liquid in the desalting tank into the desalting device;
the input end of the desalting tank is connected with the output end of the pretreatment unit and is used for receiving the mother liquor treated by the pretreatment unit;
the first output end of the desalination device is connected with the brine tank and used for inputting monovalent brine into the brine tank, and the second output end of the desalination device is connected with the concentration desalination unit so as to input feed liquid meeting the first preset condition in the desalination device into the concentration unit.
In one embodiment, a desalination flushing electric valve and a desalination regulating valve are further arranged between the desalination tank and the desalination device in parallel;
the desalination and flushing electric valve is used for controlling the flow and/or flow speed of flushing liquid for flushing the desalination and pre-concentration unit;
the desalination regulating valve is used for controlling the flow and/or flow rate of the circulating liquid input into the desalination tank by the desalination device.
In one embodiment, the desalination apparatus comprises a nanofiltration membrane separation device, and a first brine flow meter is arranged between the nanofiltration membrane separation device and the brine tank.
In one embodiment, the concentration unit comprises a concentration tank and a concentration desalination device, between which the liquid can be cyclically processed;
a concentration booster pump and a concentration high-pressure pump are sequentially connected between the first end of the concentration tank and the concentration desalting device, and the output end of the concentration desalting device is connected with a brine tank and used for inputting monovalent brine into the brine tank;
and the output end of the second end of the concentration tank is connected with the organic iodine liquid box so as to input the feed liquid meeting the second preset condition into the organic iodine liquid box.
In one embodiment, a concentration flushing electric valve and a concentration regulating valve are further arranged between the concentration tank and the concentration desalting device in parallel;
the concentration and flushing electric valve is used for controlling the flow and/or flow speed of flushing liquid for flushing the concentration unit;
the concentration regulating valve is used for controlling the flow and/or the flow speed of the circulating liquid input into the concentration tank by the concentration desalting device.
In one embodiment, a concentration feed-supplement regulating valve and a concentration feed-supplement flow meter are arranged between the second output end of the desalination device and the first input end of the concentration tank;
the third input end of the concentration tank is connected with the pure water unit, and a pure water flowmeter and a pure water replenishing valve are arranged on a pipeline between the third input end and the pure water unit;
and the pure water replenishing valve and the concentration replenishing valve are opened simultaneously, so that pure water from the pure water unit and feed liquid from the desalting device enter the concentration tank according to a preset ratio.
In one embodiment, a second brine flow meter is provided between the concentration desalination device and the brine tank.
In one embodiment, the pretreatment unit comprises a contrast medium mother liquor box, a feed liquor pump and a pretreatment device which are connected in sequence;
the output end of the pretreatment device is connected with the desalting tank, and a mother liquor flowmeter is arranged on a pipeline connected with the desalting tank and the desalting tank.
Compared with the prior art, the method has the advantages that the organic iodide and the brine can be effectively separated through the membrane method process, the enriched organic iodide can be further recycled, the separated brine can be further subjected to deepening treatment, and the problems of the traditional crystallization process can be solved. According to the process, when the liquid in the desalting and pre-concentrating unit meets a first preset condition, the desalting and pre-concentrating unit is communicated with the concentrating unit, so that the feed liquid in the desalting and pre-concentrating unit is input into the concentrating unit for further concentration treatment; when the liquid in the concentration desalting unit meets a second preset condition, the concentration desalting unit stops concentration operation, and the feed liquid in the concentration desalting unit is input into the organic iodine liquid tank, so that the flow direction of the liquid can be controlled by presetting the condition required to be met by the liquid, and the treatment of the liquid is more accurately controlled; in addition, because the feed liquid is concentrated and separated in the desalting pre-concentration unit and the concentration unit, no extra ions enter the whole device, and the aim of pollution-free treatment is fulfilled.
Drawings
The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of a contrast agent mother liquor organic iodine recovery device in an embodiment of the present invention.
Reference numerals:
1-a pre-treatment unit; 11-contrast agent mother liquor tank; 12-a feed liquid pump; 13-a pre-treatment device;
2-a desalination preconcentration unit; 21-desalting tank; 22-a booster pump; 23-a high pressure pump; 24-a desalination unit; 25-mother liquor flow meter; 26-desalination rinse electric valve; 27-a desalination regulating valve; 28-a first brine flow meter;
3-a concentration unit; 30-a concentration tank; 31-a concentration booster pump; 32-organic iodine solution booster pump; 33-a high pressure pump for concentration; 34-a concentration desalination device; 35-a second brine flow meter; 36-concentrate rinse electric valve; 37-a concentration regulating valve; 38-concentrated feed regulation valve; 39-concentration feed supplement flowmeter;
4-brine tank; 5-organic iodine liquid box; 6-pure water flowmeter.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in FIG. 1, the present invention provides a contrast agent mother liquor organic iodine recovery device, which comprises a pretreatment unit 1 for pretreating contrast agent mother liquor, a desalination pre-concentration unit 2 connected with the pretreatment unit 1, a concentration unit 3 connected with the desalination pre-concentration unit 2, a brine tank 4 and an organic iodine solution tank 5.
The separated monovalent brine in the desalting preconcentration unit 2 enters a brine tank 4, and the treated monovalent brine in the concentrating desalting unit 3 also enters the brine tank 4.
When the liquid in the desalination pre-concentration unit 2 meets a first preset condition, the desalination pre-concentration unit 2 is communicated with the concentration unit 3, so that the feed liquid in the desalination pre-concentration unit 2 is input into the concentration unit 3 for further concentration treatment; when the liquid in the concentration desalting unit 3 satisfies the second predetermined condition, the concentration desalting unit 3 stops the concentration operation and feeds the feed liquid therein to the organic iodine liquid tank 5.
In some embodiments, the first predetermined condition is: the concentration rate reaches a first preset value; the second predetermined condition is: the concentration rate reaches a second predetermined value. That is, when the concentration ratio of the liquid in the desalination pre-concentration unit 2 reaches a first predetermined value, the desalination pre-concentration unit 2 is communicated with the concentration unit 3, so that the feed liquid in the desalination pre-concentration unit 2 is input into the concentration unit 3 for further concentration treatment; when the concentration ratio of the liquid in the concentration desalting unit 3 reaches a second predetermined value, the concentration desalting unit 3 stops the concentration operation and feeds the feed liquid therein to the organic iodine liquid tank 5.
Whether or not the concentration rate reaches the first predetermined value may be obtained by measuring the iodine content. Similarly, whether the concentration rate reaches the second predetermined value or not can be obtained by measuring the iodine content.
In other embodiments, the first predetermined condition is: the conductivity reaches a third predetermined value; the second predetermined condition is: the conductivity reaches a fourth predetermined value. In other words, whether the desalination pre-concentration unit 2 and the concentration unit 3 are connected or not can also be controlled by monitoring the electrical conductivity of the liquid.
The first predetermined value and the second predetermined value may be set as needed, and may be different values.
In some embodiments, the second predetermined condition is that the organic iodine content reaches a fourth predetermined value and the salt content is less than a fifth predetermined value.
The desalting preconcentration unit 2 will be described in detail below.
The desalination preconcentration unit 2 includes a desalination tank 21 and a desalination device 24, and the liquid can be circulated between the desalination tank 21 and the desalination device 24.
A first input end of the desalting tank 21 is connected with an output end of the pretreatment unit 1 and is used for receiving the mother liquor treated by the pretreatment unit 1. The second input end of the desalting tank 21 is also connected with the second output end of the desalting device 24, so that the liquid circulates between the desalting device 24 and the desalting tank 21, and monovalent brine is continuously separated out when the mother liquor continuously circulates, thereby realizing the aim of desalting the mother liquor.
A booster pump 22 and a high-pressure pump 23 are sequentially connected between the output end of the desalting tank 21 and the input end of the desalting device 24 so as to pump the liquid in the desalting tank 21 into the desalting device 24;
further, the first output of the desalination device 24 is connected to the brine tank 4 for feeding monovalent brine into the brine tank 4. The second output end of the desalination device 24 is further connected to the concentration desalination unit 3, so that the feed liquid with the concentration rate reaching the first predetermined value in the desalination device 24 is input into the concentration unit 3 for further concentration processing.
Furthermore, a desalination flush electric valve 26 and a desalination regulating valve 27 are arranged in parallel between the second input end of the desalination tank 21 and the second output end of the desalination device 24. Wherein the desalination rinse electro valve 26 is used to control the flow and/or velocity of the rinse liquid used to rinse the desalination pre-concentration unit 2 when the entire system needs to be rinsed. The desalination regulating valve 27 is used for controlling the flow and/or flow rate of the circulating liquid input into the desalination tank 21 by the desalination device 24.
Furthermore, it should be noted that the desalination regulating valve 27 is not open at the same time as the concentrate feed regulating valve 38 described below, in other words, the second output of the desalination device 24 is not in communication with the concentration tank 30 when the second output of the desalination device 24 is in communication with the second input of the desalination tank 21, and vice versa. This allows the feed liquid from the second output of the desalter 24 to be returned to the desalting tank 21 and to the concentration tank 30 at different times.
Further, the desalination device 24 comprises a nanofiltration membrane separation device, and the monovalent salt in the mother liquor can permeate the nanofiltration membrane in the nanofiltration membrane separation device, so that the monovalent salt enters the brine tank 4, and other macromolecules cannot permeate the nanofiltration membrane. A first brine flow meter 28 is arranged between the nanofiltration membrane separation device and the brine tank 4 and is used for monitoring the concentration rate of liquid in the nanofiltration membrane separation device.
The concentration unit 3 will be described in detail below.
The concentration unit 3 includes a concentration tank 30 and a concentration desalination device 34, and the liquid can be circulated between the concentration tank 30 and the concentration desalination device 34.
A concentration booster pump 31 and a concentration high-pressure pump 33 are connected between the first end output end of the concentration tank 30 and the input end of the concentration desalting device 34 in sequence, so that the feed liquid in the concentration tank 30 can be pumped into the concentration desalting device 34.
A first output of the concentration desalination device 34 is connected to the brine tank 4 for feeding monovalent brine into the brine tank 4; a second end output of the concentration desalination device 34 is connected to a second input of the concentration tank 30, thereby enabling liquid circulation between the concentration tank 30 and the concentration desalination device 34.
The second end output end of the concentration tank 30 is connected with the organic iodine liquid tank 5. An organic iodine solution booster pump 32 is provided on a pipe between the second end output end of the concentration tank 30 and the organic iodine solution tank 5 to input the feed liquid having the concentration rate reaching a second predetermined value into the organic iodine solution tank 5.
Since the salt content of the feed liquid meeting the first condition after being processed by the desalting device 24 is greatly reduced, the feed liquid meeting the second condition after being processed by the concentration desalting device 34 is qualified feed liquid. When the feed liquid in the concentration tank 30 satisfies the second condition, the concentration unit 3 stops working, and the feed liquid in the concentration tank 30 is pumped into the organic iodine liquid tank 5 by the organic iodine liquid booster pump 32.
A concentrate flushing electric valve 36 and a concentrate adjusting valve 37 are also arranged between the concentrate tank 30 and the concentrate desalting device 34 in parallel. The electric valve 36 for concentration and flushing is used for controlling the flow and/or velocity of the flushing liquid for flushing the concentration unit 3; the concentration control valve 37 is used to control the flow rate and/or flow rate of the circulating liquid input into the concentration tank 30 by the concentration desalination device 34.
Between the second output of the desalination device 24 and the first input of the concentration tank 30, a concentration feed regulation valve 38 and a concentration feed flow meter 39 are provided. As described above, the concentrate feed valve 38 and the desalting control valve 27 are not opened at the same time.
The third input end of the concentration tank 30 is connected with the pure water unit, and a pure water flowmeter 6 and a pure water replenishing valve are arranged on a pipeline between the third input end and the pure water unit. When the pure water replenishing valve is opened, pure water may be supplied to the concentration tank 30.
Further, the pure water replenishing valve and the concentration replenishing valve 38 are simultaneously opened to allow pure water from the pure water unit and feed liquid from the desalter 24 to enter the concentration tank 30 at a predetermined ratio. Through continuously replenishing pure water to concentrate jar 30 and diluting, can deviate from monovalent salt from the feed liquid when permeating the nanofiltration membrane, realize the further desorption of salinity, the feed liquid can be concentrated until reaching the requirement simultaneously.
A second brine flow meter 35 is provided on a conduit between the first output of the concentration desalination device 34 and the brine tank 4 for monitoring the concentration rate of the liquid in the concentration desalination device 34.
The pretreatment device 1 will be described in detail below.
The pretreatment unit 1 includes a contrast medium mother liquid tank 11, a feed liquid pump 12, and a pretreatment device 13 connected in this order. The output end of the pretreatment device 13 is connected with the desalting tank 21, and a mother liquor flowmeter 25 is arranged on a pipeline connected with the desalting tank and the desalting tank.
Note that the concentration rate of the liquid in the desalination preconcentration unit 2 can be obtained from the monitoring data of the mother liquor flow meter 25 and the monitoring data of the first brine flow meter 28. The concentration rate of the liquid of the concentration unit 3 can be obtained from the monitoring data of the concentration adjustment valve 37 and the monitoring data of the second brine flow meter 35.
Further, the contrast agent mother liquor organic iodine recovery device also comprises a flushing unit. After the desalination pre-concentration unit 2 and the concentration unit 3 operate for a period of time and generate a certain amount of feed liquid, the operation is stopped for flushing.
The rinse unit includes a pure water unit, a desalination rinse electric valve 26, and a concentration rinse electric valve 36. I.e. the pipeline is flushed with pure water from the pure water unit. During flushing, pure water enters the middle liquid levels of the desalting tank 21 and the concentration tank 30, and the booster pump and the relevant valves 22 are started to make the pure water circulate in the pipeline for a certain time and then stop.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. The device for recovering the organic iodine in the contrast agent mother liquor is characterized by comprising a pretreatment unit (1) for pretreating the contrast agent mother liquor, a desalination preconcentration unit (2) connected with the pretreatment unit (1), a concentration unit (3) connected with the desalination preconcentration unit (2), a brine tank (4) and an organic iodine liquid tank (5);
wherein, the separated monovalent brine in the desalting and pre-concentrating unit (2) enters the brine tank (4);
when the liquid in the desalination pre-concentration unit (2) meets a first preset condition, the desalination pre-concentration unit (2) is communicated with the concentration unit (3), so that the feed liquid in the desalination pre-concentration unit (2) is input into the concentration unit (3) for further concentration treatment;
the treated monovalent brine in the concentration desalting unit (3) also enters the brine tank (4);
when the liquid in the concentration desalting unit (3) meets a second preset condition, the concentration desalting unit (3) stops the concentration operation, and the feed liquid in the concentration desalting unit is input into the organic iodine liquid box (5).
2. The apparatus for recovering organic iodine from a mother liquor of contrast medium as claimed in claim 1, wherein said first predetermined condition is that the concentration rate reaches a first predetermined value;
the second predetermined condition is that the concentration rate reaches a second predetermined value.
3. The contrast agent mother liquor organic iodine recovery device according to claim 1 or 2, wherein the desalination preconcentration unit (2) comprises a desalination tank (21) and a desalination device (24), liquid being cyclically processable between the desalination tank (21) and the desalination device (24);
a booster pump (22) and a high-pressure pump (23) are sequentially connected between the desalting tank (21) and the desalting device (24) so as to pump the liquid in the desalting tank (21) into the desalting device (24);
the input end of the desalting tank (21) is connected with the output end of the pretreatment unit (1) and is used for receiving the mother liquor treated by the pretreatment unit (1);
the first output end of the desalting device (24) is connected with the brine tank (4) and used for inputting monovalent brine into the brine tank (4), and the second output end of the desalting device (24) is connected with the concentration desalting unit (3) so as to input feed liquid meeting first preset conditions in the desalting device (24) into the concentration unit (3).
4. The contrast agent mother liquor organic iodine recovery device according to claim 3, wherein a desalination flushing electric valve (26) and a desalination regulating valve (27) are further arranged in parallel between the desalination tank (21) and the desalination device (24);
wherein the desalination rinse electro valve (26) is used to control the flow and/or flow rate of the rinse liquid that rinses the desalination pre-concentration unit (2);
the desalination regulating valve (27) is used for controlling the flow and/or flow rate of the circulating liquid input into the desalination tank (21) by the desalination device (24).
5. The contrast agent mother liquor organic iodine recovery device according to claim 3, wherein the desalination device (24) comprises a nanofiltration membrane separation device, and a first saline flow meter (28) is arranged between the nanofiltration membrane separation device and the saline tank (4).
6. The contrast agent mother liquor organic iodine recovery device according to claim 3, wherein said concentration unit (3) comprises a concentration tank (30) and a concentration desalination device (34), liquid being cyclically processable between said concentration tank (30) and said concentration desalination device (34);
a concentration booster pump (31) and a concentration high-pressure pump (33) are sequentially connected between the first end of the concentration tank (30) and the concentration desalting device (34),
the output end of the concentration desalting device (34) is connected with the brine tank (4) and is used for inputting monovalent brine into the brine tank (4);
and the second end output end of the concentration tank (30) is connected with the organic iodine liquid box (5) so as to input the feed liquid meeting a second preset condition into the organic iodine liquid box (5).
7. The contrast agent mother liquor organic iodine recovery device according to claim 6, wherein a concentration flushing electric valve (36) and a concentration adjusting valve (37) are further arranged between the concentration tank (30) and the concentration desalting device (34) in parallel;
wherein the concentrate rinse electric valve (36) is used for controlling the flow and/or flow rate of the rinse liquid for rinsing the concentrate unit (3);
the concentration regulating valve (37) is used for controlling the flow and/or flow speed of the circulating liquid input into the concentration tank (30) by the concentration desalting device (34).
8. The contrast agent mother liquor organoiodine recovery apparatus according to claim 6, wherein a concentration feed-supplement regulating valve (38) and a concentration feed-supplement flow meter (39) are provided between the second output of said desalination means (24) and the first input of said concentration tank (30);
a third input end of the concentration tank (30) is connected with the pure water unit, and a pure water flowmeter (6) and a pure water replenishing valve are arranged on a pipeline between the third input end and the pure water unit;
the pure water make-up valve and the concentrate make-up valve (38) are opened simultaneously to allow pure water from the pure water unit and feed liquid from the desalination device (24) to enter the concentrate tank (30) in a predetermined ratio.
9. The contrast agent mother liquor organoiodine recovery apparatus according to claim 6, wherein a second brine flow meter (35) is provided between the concentration desalination apparatus (34) and the brine tank (4).
10. The contrast agent mother liquor organoiodine recovery apparatus according to claim 3, wherein said pretreatment unit (1) comprises a contrast agent mother liquor tank (11), a feed liquid pump (12) and a pretreatment apparatus (13) connected in sequence;
the output end of the pretreatment device (13) is connected with the desalting tank (21), and a mother liquor flowmeter (25) is arranged on a pipeline connected with the desalting tank and the desalting tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011559695.9A CN112591854A (en) | 2020-12-25 | 2020-12-25 | Contrast medium mother liquor organic iodine recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011559695.9A CN112591854A (en) | 2020-12-25 | 2020-12-25 | Contrast medium mother liquor organic iodine recovery device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116216997A (en) * | 2023-03-15 | 2023-06-06 | 安徽科博瑞环境科技有限公司 | Iodine contrast agent hydrolysate wastewater concentration and extraction treatment process and system |
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| CN108946667A (en) * | 2018-08-10 | 2018-12-07 | 淄博格瑞水处理工程有限公司 | Iodine device processed |
| CN110078264A (en) * | 2019-05-29 | 2019-08-02 | 淄博格瑞水处理工程有限公司 | Near-zero release removal bitter and fishiness |
| CN111196661A (en) * | 2020-02-14 | 2020-05-26 | 淄博格瑞水处理工程有限公司 | Zero discharge apparatus of organic iodine-containing high salt waste water resource |
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| CN1328482A (en) * | 1998-11-27 | 2001-12-26 | 伯拉考成像股份公司 | Process for recovery of iodine from aqueous solutions containing iodinated organic compounds |
| WO2014197966A1 (en) * | 2013-06-13 | 2014-12-18 | Saltworks Technologies Inc. | Desalination system and method for desalinating saltwater |
| CN108946667A (en) * | 2018-08-10 | 2018-12-07 | 淄博格瑞水处理工程有限公司 | Iodine device processed |
| CN110078264A (en) * | 2019-05-29 | 2019-08-02 | 淄博格瑞水处理工程有限公司 | Near-zero release removal bitter and fishiness |
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| CN116216997A (en) * | 2023-03-15 | 2023-06-06 | 安徽科博瑞环境科技有限公司 | Iodine contrast agent hydrolysate wastewater concentration and extraction treatment process and system |
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