CN210340592U - High salt waste water refines industry salt device - Google Patents
High salt waste water refines industry salt device Download PDFInfo
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- CN210340592U CN210340592U CN201920028307.0U CN201920028307U CN210340592U CN 210340592 U CN210340592 U CN 210340592U CN 201920028307 U CN201920028307 U CN 201920028307U CN 210340592 U CN210340592 U CN 210340592U
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Abstract
The utility model discloses a high salt waste water refined industrial salt device, which comprises a raw water tank, wherein the raw water tank is communicated with an ozone oxidation tank through a first water pump, the outlet of the ozone oxidation tank is communicated with an ultrafiltration unit through a second water pump, the water producing port of the ultrafiltration unit is communicated with an ultrafiltration water producing tank through a pipeline, the ultrafiltration water producing tank is communicated with a first security filter through a third water pump, the first security filter is communicated with a first nanofiltration unit through a fourth water pump, the concentrated water port of the first nanofiltration unit is communicated with a first nanofiltration concentrated water tank through a pipeline, the first nanofiltration concentrated water tank is communicated with a second security filter through a fifth water pump, the second security filter is communicated with a second nanofiltration unit through a sixth water pump, the high salt waste water refined industrial salt device greatly improves the capability and effect of refined industrial salt, and ensures the utilization rate of high salt waste water, effectively reduces the wastewater treatment cost of enterprises and is beneficial to the environmental protection and industrial management of enterprises.
Description
Technical Field
The utility model relates to a waste water salt manufacturing technical field specifically is a refined industrial salt device of high salt waste water.
Background
In the field of high-salinity wastewater zero-discharge treatment, the large range of the treatment is oriented to areas lacking in northwest and the like and areas partially coastal but not provided with natural water bodies for receiving sewage. The implementation of the sewage zero discharge technology in the part of areas is beneficial to ensuring the local water environment and inhibiting the occurrence of water pollution accidents. The problem that faces at present is, the dense water that recirculated cooling water field blowdown water, the reverse osmosis system water installation of many enterprises produced, handles the back through zero release facility, has produced mixed salt (miscellaneous salt) in a large number, and general salt purity is not high, does not have the value that can recycle, consequently adopts the technique of a high-efficient salt of dividing, and it is very having economic value to extract inside high-purity salt.
At present, no relevant technical scheme exists in the high-salinity wastewater refining industrial salt technology, particularly for the sewage of a circulating cooling water field and the concentrated water generated by a reverse osmosis water making device, calcium and magnesium ions are removed from the concentrated water through treatment, only a coarse salt separation technology is adopted, the purity of the separated salts is not high, the purity of sodium chloride and sodium sulfate is only about 80%, the industrial use value is very low, the treatment and utilization of the high-salinity wastewater are not facilitated, the economic benefit is low, the environmental protection cost is high, and the enterprise management and development are not facilitated.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a refined industrial salt device of high salt waste water to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a high-salinity wastewater industrial salt refining device comprises a raw water tank, wherein the raw water tank is communicated with an ozone oxidation tank through a first water pump, an outlet of the ozone oxidation tank is communicated with an ultrafiltration unit through a second water pump, a water production port of the ultrafiltration unit is communicated with a first ultrafiltration water production tank through a pipeline, the first ultrafiltration water production tank is communicated with a first safety filter through a third water pump, the first safety filter is communicated with a first nanofiltration unit through a fourth water pump, and a concentrated water port of the first nanofiltration unit is communicated with a first nanofiltration concentrated water tank through a pipeline;
the first nanofiltration concentrated water tank is communicated with a second security filter through a fifth water pump, the second security filter is communicated with a second nanofiltration unit through a sixth water pump, a water production port of the second nanofiltration unit is communicated with a second nanofiltration water production tank through a pipeline, the second nanofiltration water production tank is communicated with a third security filter through a seventh water pump, the third security filter is communicated with a first reverse osmosis unit through an eighth water pump, a water production port of the first reverse osmosis unit is communicated with a reverse osmosis water production tank through a pipeline, and the reverse osmosis water production tank is communicated with a production link recycling tank through a pipeline.
Preferably, the ozone oxidation tank is communicated with an ozone unit through a pipeline.
Preferably, the concentrate inlet of the ultrafiltration unit is communicated with the raw water tank through a first circulating pipeline.
Preferably, the water production port of the first nanofiltration unit is communicated with the second nanofiltration water production tank through a second circulating pipeline.
Preferably, the concentrated water port of the first reverse osmosis unit is communicated with a reverse osmosis concentrated water tank through a pipeline, the reverse osmosis concentrated water tank is communicated with a first electrodialysis unit through a ninth water pump, the concentrated water port of the first electrodialysis unit is communicated with a first electrodialysis concentrated water tank through a pipeline, and the first electrodialysis concentrated water tank is communicated with a first MVR unit through a tenth water pump.
Preferably, the fresh water port of the first electrodialysis unit is communicated with the reverse osmosis water production tank through a pipeline.
Preferably, the concentrated water port of the second nanofiltration unit is communicated with a second nanofiltration concentrated water tank through a pipeline, the second nanofiltration concentrated water tank is communicated with a fourth cartridge filter through an eleventh water pump, the fourth cartridge filter is communicated with a second reverse osmosis unit through a twelfth water pump, the water production port of the second reverse osmosis unit is communicated with a second ultrafiltration water production tank through a pipeline, the concentrated water port of the second reverse osmosis unit is communicated with a second reverse osmosis concentrated water tank through a pipeline, the second reverse osmosis concentrated water tank is communicated with a second electrodialysis unit through a thirteenth water pump, the fresh water port of the second electrodialysis unit is communicated with a production link recycling tank through a pipeline, the concentrated water port of the second electrodialysis unit is communicated with a second electrodialysis concentrated water tank through a pipeline, and the second electrodialysis concentrated water tank is communicated with a second MVR unit through a fourteenth water pump.
Preferably, the first reverse osmosis unit and the second reverse osmosis unit both adopt Dow RO reverse osmosis membranes.
Preferably, the electrodialysis membranes used in the first and second electrodialysis units are homogeneous ion exchange membranes.
Compared with the prior art, the beneficial effects of the utility model are that: the high-salt wastewater refining industrial salt device can be used for treating high-salt wastewater containing sodium chloride and sodium sulfate, and the maximum separation capacity of the prior art is achieved, the high-salt wastewater refining industrial salt device and the high-salt wastewater refining industrial salt device have high separation degree, can be used for preparing industrial secondary salt meeting the national standard, can be used as a byproduct, are applied to industries such as chlor-alkali, alkali preparation by an ion membrane method, printing and dyeing and the like, change waste into valuable, and generate certain economic value, and fresh water generated in the separation process can flow back to the production link for reuse, so that the capacity and effect of refining industrial salt are greatly improved, the utilization rate of the high-salt wastewater is ensured, the wastewater treatment cost of enterprises is effectively.
Drawings
FIG. 1 is a schematic view of the overall process flow of the present invention;
FIG. 2 is a schematic view of the preliminary treatment process of the present invention;
FIG. 3 is a flow chart of a first subsequent process of the present invention;
fig. 4 is a flow chart of a second subsequent process of the present invention.
In the figure: 1 raw water tank, 2 first water pump, 3 ozone oxidation tank, 4 ozone unit, 5 second water pump, 6 first circulation pipeline, 7 ultrafiltration unit, 8 first ultrafiltration water production tank, 9 third water pump, 10 first safety filter, 11 fourth water pump, 12 first nanofiltration unit, 13 first nanofiltration concentrated water tank, 14 fifth water pump, 15 second safety filter, 16 sixth water pump, 17 second nanofiltration unit, 18 second nanofiltration water production tank, 19 seventh water pump, 20 third safety filter, 21 eighth water pump, 22 first reverse osmosis unit, 23 reverse osmosis concentrated water tank, 24 ninth water pump, 25 first electrodialysis unit, 26 first electrodialysis concentrated water tank, 27 tenth water pump, 28 first MVR unit, 29 second concentrated water tank, 30 eleventh water pump, 31 fourth safety filter, 32 twelfth water pump, 33 second reverse osmosis unit, 34 second ultrafiltration water production tank, 27 tenth water pump, 28 first MVR unit, 29 second nanofiltration water tank, 31 fourth safety filter, 31 twelfth water pump, 33 second reverse osmosis unit, 34 second ultrafiltration water production tank, 35 a second reverse osmosis concentrated water tank, 36 a thirteenth water pump, 37 a second electrodialysis unit, 38 a second electrodialysis concentrated water tank, 39 a fourteenth water pump, 40 a second MVR unit, 41 a reverse osmosis water production tank, 42 a production link recycling tank and 43 a second circulating pipeline.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a high-salinity wastewater refining industrial salt device comprises a raw water tank 1, wherein the raw water tank 1 is communicated with an ozone oxidation tank 3 through a first water pump 2, an outlet of the ozone oxidation tank 3 is communicated with an ultrafiltration unit 7 through a second water pump 5, sodium bisulfite is filled in front of the ultrafiltration unit 7 to be used as a reducing agent to perform a vigorous oxidation-reduction reaction with ozone, redundant ozone is consumed, residual ozone is ensured not to enter the ultrafiltration unit 7, the ultrafiltration unit 7 adopts a hollow fiber membrane component and is designed according to an external pressure cross flow mode, water produced by the ultrafiltration unit 7 automatically flows into an ultrafiltration water tank 8, a water production port of the ultrafiltration unit 7 is communicated with a first ultrafiltration water production tank 8 through a pipeline, the first ultrafiltration water production tank 8 is communicated with a first safety filter 10 through a third water pump 9, the filtration precision is 5 mu m, the first safety filter 10 is communicated with a first unit 12 through a fourth water pump 11, water produced by the first nanofiltration unit 12 mainly comprises a sodium chloride component, wherein the sodium chloride component accounts for more than 98% of the total salt content, the concentrated water of the first nanofiltration unit 12 mainly takes sodium sulfate as the main component, the sodium sulfate component accounts for more than 85% of the total salt content, and the concentrated water port of the first nanofiltration unit 12 is communicated with a first nanofiltration concentrated water tank 13 through a pipeline;
the first nanofiltration concentrated water tank 13 is communicated with a second security filter 15 through a fifth water pump 14, the second security filter 15 is communicated with a second nanofiltration unit 17 through a sixth water pump 16, a water production port of the second nanofiltration unit 17 is communicated with a second nanofiltration water production tank 18 through a pipeline, the second nanofiltration water production tank 18 is communicated with a third security filter 20 through a seventh water pump 19, the third security filter 20 is communicated with a first reverse osmosis unit 22 through an eighth water pump 21, a water production port of the first reverse osmosis unit 22 is communicated with a reverse osmosis water production tank 41 through a pipeline, and the reverse osmosis water production tank 41 is communicated with a production link recycling tank 42 through a pipeline.
The concentrated water port of the ultrafiltration unit 7 is communicated with the raw water tank 1 through a first circulating pipeline 6, so that the treatment can be repeatedly circulated, and the stability is improved.
The water producing port of the first nanofiltration unit 12 is communicated with the second nanofiltration water producing tank 18 through a second circulating pipeline 43, so that further treatment can be carried out, and the salt separation effect is ensured.
The dense water port of the first reverse osmosis unit 22 is communicated with a reverse osmosis dense water tank 23 through a pipeline, the reverse osmosis dense water tank 23 is communicated with a first electrodialysis unit 25 through a ninth water pump 24, the dense water port of the first electrodialysis unit 25 is communicated with a first electrodialysis dense water tank 26 through a pipeline, the first electrodialysis dense water tank 26 is communicated with a first MVR unit 28 through a tenth water pump 27, and mechanical evaporation can be carried out to obtain salt crystals.
The fresh water port of the first electrodialysis unit 25 is communicated with the reverse osmosis water production tank 41 through a pipeline.
The concentrated water port of the second nanofiltration unit 17 is communicated with a second nanofiltration concentrated water tank 29 through a pipeline, the second nanofiltration concentrated water tank 29 is communicated with a fourth cartridge filter 31 through an eleventh water pump 30, the fourth cartridge filter 31 is communicated with a second reverse osmosis unit 33 through a twelfth water pump 32, the water producing port of the second reverse osmosis unit 33 is communicated with a second ultrafiltration water producing tank 34 through a pipeline, the concentrated water port of the second reverse osmosis unit 33 is communicated with a second reverse osmosis concentrated water tank 35 through a pipeline, the second reverse osmosis concentrated water tank 35 is communicated with a second electrodialysis unit 37 through a thirteenth water pump 36, the fresh water port of the second electrodialysis unit 37 is communicated with a production link recycling tank 42 through a pipeline, the concentrated water port of the second electrodialysis unit 37 is communicated with a second electrodialysis concentrated water tank 38 through a pipeline, and the second electrodialysis concentrated water tank 38 is communicated with a second MVR unit 40 through a fourteenth water pump 39.
The first reverse osmosis unit 22 and the second reverse osmosis unit 33 both employ a dow RO reverse osmosis membrane.
The electrodialysis membranes used in the first and second electrodialysis units 25, 37 are homogeneous ion exchange membranes.
The utility model discloses when concrete implementation: high salt waste water firstly enters a raw water tank 1 after calcium and magnesium are removed, then enters an ozone oxidation tank 3 through a first water pump 2, and is oxidized through ozone, and the ozone filling amount is as follows: the COD (chemical oxygen demand) molar ratio is 3:1, the retention time of the oxidation design is 2h, a corundum aeration head is arranged in the corundum aeration head to ensure the uniformity of aeration distribution of ozone, the COD of the wastewater oxidized by ozone is ensured to be not higher than 50mg/L, then the wastewater is added into an ultrafiltration unit 7 through a second water pump 5 and then enters a super-production water tank 8, the water in the first ultrafiltration water production tank 8 enters a first nanofiltration unit 12 through a third water pump 9 and a fourth water pump 11, the outlet pressure of the fourth water pump 11 is controlled to be 0.7-0.9MPa, the water production rate of the first nanofiltration unit 12 is controlled to be 60%, then the water produced by the first nanofiltration unit 12 automatically flows into a second nanofiltration unit water production tank 18, the concentrated water automatically flows into a first nanofiltration concentrated water tank 13, the water in the first nanofiltration concentrated water tank 13 passes through a second water pump 14 and enters a second nanofiltration unit 17, the second nanofiltration unit 17 controls the water production to be 50%, the outlet operation pressure of the fifth water pump 14 is controlled to be 0.6-0.7MPa, the produced water of the second nanofiltration unit 17 enters the second nanofiltration water production tank 18, the concentrated water produced by the second nanofiltration unit 17 enters the second nanofiltration concentrated water tank 29, then the water of the second nanofiltration water production tank 18 is introduced into the first reverse osmosis unit 22 through the seventh water pump 19 and the eighth water pump 21 for treatment, the water is an RO membrane reverse osmosis unit, the water production rate is controlled to be 80%, the produced concentrated water is concentrated through the first electrodialysis unit 25 and then is sent into the first MVR unit 28 for mechanical evaporation, crystalline sodium chloride with the purity of more than 98% is obtained, wherein the produced water of the first reverse osmosis unit 22 is directly recycled to the production link, the mass concentration of the sodium chloride in the wastewater reaches 12-14% after the concentrated water produced by the first reverse osmosis unit 22 is concentrated through the first electrodialysis unit 25, and the concentrated water of the second nanofiltration concentrated water tank 29 enters the second reverse osmosis unit 33 through the eleventh water pump 30 and the twelfth water pump 32 for reverse osmosis treatment, the reverse osmosis control water yield is 75%, the generated concentrated water is concentrated through the second electrodialysis unit 37 and then sent into the second MVR unit 40, mechanical evaporation is carried out to obtain crystalline sodium sulfate with the purity of more than 96%, wherein the water produced by the second reverse osmosis unit 33 automatically flows into the ultrafiltration water tank 34, the concentrated water produced by the second reverse osmosis unit 33 is concentrated through the second electrodialysis unit 37, the mass concentration of sodium sulfate in the wastewater reaches 12-16%, the water produced by the second electrodialysis unit 37 is recycled to the recycling tank 42 in the production link, and good separation and treatment effects can be achieved.
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 (9)
1. The utility model provides a refined industrial salt device of high salt waste water, includes former water pitcher (1), its characterized in that: the raw water tank (1) is communicated with an ozone oxidation tank (3) through a first water pump (2), the outlet of the ozone oxidation tank (3) is communicated with an ultrafiltration unit (7) through a second water pump (5), the water production port of the ultrafiltration unit (7) is communicated with a first ultrafiltration water production tank (8) through a pipeline, the first ultrafiltration water production tank (8) is communicated with a first security filter (10) through a third water pump (9), the first security filter (10) is communicated with a first nanofiltration unit (12) through a fourth water pump (11), and the concentrated water port of the first nanofiltration unit (12) is communicated with a first nanofiltration concentrated water tank (13) through a pipeline;
the first nanofiltration concentrated water tank (13) is communicated with a second security filter (15) through a fifth water pump (14), the second security filter (15) is communicated with a second nanofiltration unit (17) through a sixth water pump (16), a water production port of the second nanofiltration unit (17) is communicated with a second nanofiltration water production tank (18) through a pipeline, the second nanofiltration water production tank (18) is communicated with a third security filter (20) through a seventh water pump (19), the third security filter (20) is communicated with a first reverse osmosis unit (22) through an eighth water pump (21), a water production port of the first reverse osmosis unit (22) is communicated with a reverse osmosis water production tank (41) through a pipeline, and the reverse osmosis water production tank (41) is communicated with a production link tank (42) through a pipeline.
2. The high-salinity wastewater refining industrial salt device according to claim 1, characterized in that: the ozone oxidation tank (3) is communicated with an ozone unit (4) through a pipeline.
3. The high-salinity wastewater refining industrial salt device according to claim 1, characterized in that: and a concentrated water port of the ultrafiltration unit (7) is communicated with the raw water tank (1) through a first circulating pipeline (6).
4. The high-salinity wastewater refining industrial salt device according to claim 1, characterized in that: and a water production port of the first nanofiltration unit (12) is communicated with a second nanofiltration water production tank (18) through a second circulating pipeline (43).
5. The high-salinity wastewater refining industrial salt device according to claim 1, characterized in that: the dense water mouth of first reverse osmosis unit (22) has reverse osmosis dense water jar (23) through pipeline intercommunication, reverse osmosis dense water jar (23) have first electrodialysis unit (25) through ninth water pump (24) intercommunication, the dense water mouth of first electrodialysis unit (25) has first electrodialysis dense water jar (26) through pipeline intercommunication, first electrodialysis dense water jar (26) have first MVR unit (28) through tenth water pump (27) intercommunication.
6. The apparatus of claim 5, wherein the apparatus comprises: the fresh water port of the first electrodialysis unit (25) is communicated with the reverse osmosis water production tank (41) through a pipeline.
7. The apparatus of claim 5, wherein the apparatus comprises: the concentrated water port of the second nanofiltration unit (17) is communicated with a second nanofiltration concentrated water tank (29) through a pipeline, the second nanofiltration concentrated water tank (29) is communicated with a fourth security filter (31) through an eleventh water pump (30), the fourth security filter (31) is communicated with a second reverse osmosis unit (33) through a twelfth water pump (32), the water producing port of the second reverse osmosis unit (33) is communicated with a second ultrafiltration water producing tank (34) through a pipeline, the concentrated water port of the second reverse osmosis unit (33) is communicated with a second reverse osmosis concentrated water tank (35) through a pipeline, the second reverse osmosis concentrated water tank (35) is communicated with a second electrodialysis unit (37) through a thirteenth water pump (36), the fresh water port of the second electrodialysis unit (37) is communicated with a production link tank (42) through a pipeline, the concentrated water port of the second electrodialysis unit (37) is communicated with a second electrodialysis concentrated water tank (38) through a pipeline, the second electrodialysis concentrated water tank (38) is communicated with a second MVR unit (40) through a fourteenth water pump (39).
8. The apparatus of claim 7, wherein the apparatus comprises: the first reverse osmosis unit (22) and the second reverse osmosis unit (33) both adopt Dow RO reverse osmosis membranes.
9. The apparatus of claim 7, wherein the apparatus comprises: electrodialysis membranes adopted by the first electrodialysis unit (25) and the second electrodialysis unit (37) are homogeneous phase ion exchange membranes.
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| CN201920028307.0U CN210340592U (en) | 2019-01-08 | 2019-01-08 | High salt waste water refines industry salt device |
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| CN201920028307.0U CN210340592U (en) | 2019-01-08 | 2019-01-08 | High salt waste water refines industry salt device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109534582A (en) * | 2019-01-08 | 2019-03-29 | 山东蓝然环境科技有限公司 | A kind of high-salt wastewater refining industrial salt device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109534582A (en) * | 2019-01-08 | 2019-03-29 | 山东蓝然环境科技有限公司 | A kind of high-salt wastewater refining industrial salt device |
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