CN215327278U - Spinning washing acid waste water recovery unit - Google Patents
Spinning washing acid waste water recovery unit Download PDFInfo
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- CN215327278U CN215327278U CN202120660264.5U CN202120660264U CN215327278U CN 215327278 U CN215327278 U CN 215327278U CN 202120660264 U CN202120660264 U CN 202120660264U CN 215327278 U CN215327278 U CN 215327278U
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- 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
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Abstract
The utility model relates to a spinning washing acidic wastewater recovery device, which structurally comprises an acidic wastewater tank, a wastewater delivery pump, a multi-media filter, a self-cleaning filter, an ultrafiltration device, a filter tank, a reverse osmosis booster pump, a security filter, a primary high-pressure pump, a primary concentration reverse osmosis device, an intermediate tank, a desalination high-pressure pump, a desalination reverse osmosis device and a desalination water tank which are sequentially connected through pipelines, wherein the primary concentration reverse osmosis device is also sequentially connected with a primary concentration tank, a secondary high-pressure pump, a secondary concentration reverse osmosis device, a secondary concentration tank, a tertiary high-pressure pump, a circulating pump, a tertiary concentration reverse osmosis device and a concentrated acid tank through pipelines. The utility model has the advantages that: the pH value of the wastewater liquid does not need to be adjusted, the full-membrane treatment process has good operation stability, good treatment effect and high automation degree, the concentrated acid liquid and the desalted water can be recycled, the system operation cost is reduced, the environment is not polluted, the popularization is high, and the method is particularly suitable for the occasions of recycling the spinning washing acidic wastewater of the chemical fiber plant.
Description
Technical Field
The utility model relates to a spinning washing acidic wastewater recovery device, and belongs to the technical field of sewage treatment.
Background
The main textile products in China: the yield of chemical fibers, yarns, cloth and the like is in a continuous increasing situation, the yield is the first world, and China has developed into a genuine large textile country. However, the textile industry generates a large amount of waste water while improving and enriching the cultural life of people. The pollutants in the wastewater of textile industry are mainly dirt, salts, oils and lipids on the textile fibers such as cotton and wool, and various sizing agents, dyes, surfactants, auxiliaries, acids, alkalis and the like added in the processing process, and the wastewater of textile industry has large amount and is one of serious pollution sources.
Because chemical fiber wastewater is acidic or alkaline, the prior art needs neutralization before treatment to ensure that the pH value is in a neutral range, and the acidic wastewater is generally neutralized by adding alkali and the alkaline wastewater is neutralized by adding acid. Therefore, a large amount of acid and alkali are wasted, the treatment cost is high, the salt content of the wastewater is further increased, the subsequent treatment pressure is increased, and the treatment cost is further increased.
SUMMERY OF THE UTILITY MODEL
The utility model provides a spinning washing acidic wastewater recovery device, which aims to overcome the defects in the prior art, not only does not add acid or alkali and does not change the pH value of waste liquid, but also can recover concentrated acid liquor and desalted water while treating wastewater, thereby changing waste into valuable.
The technical solution of the utility model is as follows: the spinning washing acidic wastewater recovery device structurally comprises an acidic wastewater tank, a wastewater delivery pump, a multi-media filter, a self-cleaning filter, an ultrafiltration device, a filter tank, a reverse osmosis booster pump, a security filter, a primary high-pressure pump, a primary concentration reverse osmosis device, an intermediate tank, a desalination high-pressure pump, a desalination reverse osmosis device and a desalination water tank which are sequentially connected through pipelines, wherein the primary concentration reverse osmosis device is further sequentially connected with a primary concentration tank, a secondary high-pressure pump, a secondary concentration reverse osmosis device, a secondary concentration tank, a tertiary high-pressure pump, a circulating pump, a tertiary concentration reverse osmosis device and a concentrated acid tank through pipelines.
Preferably, with the intermediate tank entry pass through the pipe connection be a concentrated reverse osmosis unit's permeate liquid export, with the demineralized water tank entry pass through the pipe connection be desalination reverse osmosis unit 4's permeate liquid export, with the concentrated jar entry pass through the pipe connection be a concentrated reverse osmosis unit's concentrate export, with the concentrated jar entry of secondary pass through the pipe connection be secondary concentrated reverse osmosis unit's concentrate export, with the concentrated acid tank entry pass through the pipe connection be cubic concentrated reverse osmosis unit's concentrate export, the cubic high pressure pump export still passes through the pipe connection circulating pump entry with cubic concentrated reverse osmosis unit's concentrate export, connect the circulating pump export to pass through the import of pipe connection cubic concentrated reverse osmosis unit.
Preferably, the concentrated solution outlet of the desalination reverse osmosis device, the permeate outlet of the secondary concentration reverse osmosis device and the permeate outlet of the tertiary concentration reverse osmosis device are respectively connected with the inlet of the filter tank through pipelines.
Preferably, a pipeline between the ultrafiltration device and the filter tank is connected with a backwashing pump through a pipeline.
Preferably, the self-cleaning filter is a PP shell, a nylon filter disc and a self-cleaning filter with the filtering precision of 50 mu m.
Preferably, the ultrafiltration device is internally provided with a hollow fiber membrane element of external pressure hollow fiber type PVDF membrane yarns with the pH tolerance of more than or equal to 1 and the filtration precision of 0.1 mu m.
Preferably, the cartridge filter is a UPVC cartridge filter with a built-in PP filter element and a filtering precision of 5 μm.
Preferably, the primary concentration reverse osmosis device is a reverse osmosis device with a roll type reverse osmosis membrane element, a pH tolerance degree of more than or equal to 1 and a tolerance pressure of 41 Bar.
Preferably, the secondary concentration reverse osmosis device is a reverse osmosis device with a roll type reverse osmosis membrane element, a pH tolerance degree of more than or equal to 1 and a tolerance pressure of 120 Bar.
Preferably, the third-time concentration reverse osmosis device is a reverse osmosis device with a roll-type reverse osmosis membrane element, a pH tolerance degree of more than or equal to 1 and a tolerance pressure of 160 Bar.
The utility model has the advantages that: structural design is reasonable, and area is little, chooses for use acid-resistant membrane, need not adjust waste water liquid pH value and handles again, has reduced the running cost. The treatment process adopting the full-membrane method has the advantages of good operation stability, good treatment effect and automation degree, the concentrated acid liquor can be recycled, the generated desalted water can be reused as a process water source, the system operation cost is reduced, the environment is not polluted, the popularization of the device is very high along with the development of the membrane technology and the gradual improvement of the environmental protection requirement, and the device is particularly suitable for the recycling occasion of the spinning washing acidic wastewater of the chemical fiber plant.
Drawings
FIG. 1 is a schematic structural diagram of a spinning water washing acidic wastewater recovery device of the utility model.
FIG. 2 is a schematic flow chart of the recovery of the spinning water washing acidic wastewater by the spinning water washing acidic wastewater recovery device of the present invention.
In the figure, 1 is an acidic wastewater tank, 2 is a wastewater transfer pump, 3 is a multi-media filter, 4 is a self-cleaning filter, 5 is an ultrafiltration device, 6 is a filtration tank, 7 is a backwash pump, 8 is a reverse osmosis booster pump, 9 is a cartridge filter, 10 is a primary high-pressure pump, 11 is a primary concentration reverse osmosis device, 12 is an intermediate tank, 13 is a desalination high-pressure pump, 14 is a desalination reverse osmosis device, 15 is a desalination water tank, 16 is a primary concentration tank, 17 is a secondary high-pressure pump, 18 is a secondary concentration reverse osmosis device, 19 is a secondary concentration tank, 20 is a tertiary high-pressure pump, 21 is a circulation pump, 22 is a tertiary concentration reverse osmosis device, and 23 is a concentrated acid tank.
Detailed Description
The present invention will be described in further detail with reference to examples and specific embodiments.
As shown in fig. 1, the spinning washing acidic wastewater recovery device structurally comprises an acidic wastewater tank 1, a wastewater delivery pump 2, a multi-media filter 3, a self-cleaning filter 4, an ultrafiltration device 5, a filter tank 6, a reverse osmosis booster pump 8, a cartridge filter 9, a primary high-pressure pump 10, a primary concentration reverse osmosis device 11, an intermediate tank 12, a desalination high-pressure pump 13, a desalination reverse osmosis device 14 and a desalination water tank 15 which are sequentially connected through pipelines.
The primary concentration reverse osmosis device 11 is also sequentially connected with a primary concentration tank 16, a secondary high-pressure pump 17, a secondary concentration reverse osmosis device 18, a secondary concentration tank 19, a tertiary high-pressure pump 20, a tertiary concentration reverse osmosis device 22 and a concentrated acid tank 23 through pipelines. ,
connected with the inlet of the intermediate tank 12 through a pipeline is a permeate outlet of a primary concentration reverse osmosis device 11, connected with the inlet of the desalted water tank 15 through a pipeline is a permeate outlet of the desalting reverse osmosis device 14, connected with the inlet of the primary concentration tank 16 through a pipeline is a concentrated solution outlet of the primary concentration reverse osmosis device 11, connected with the inlet of the secondary concentration tank 19 through a pipeline is the concentrated solution outlet of the secondary concentration reverse osmosis device 18, the concentrated solution outlet of the tertiary concentration reverse osmosis device 22 is connected with the inlet of the concentrated acid tank 23 through a pipeline, the outlet of the tertiary high-pressure pump 20 (namely, the port connected with the tertiary concentration reverse osmosis device 22) and the concentrated solution outlet of the tertiary concentration reverse osmosis device 22 are also connected with the inlet of the circulating pump 21 through a pipeline, and the outlet of the circulating pump 21 is connected with the inlet of the tertiary concentration reverse osmosis device 22 (namely, the port connected with the tertiary high-pressure pump 20) through a pipeline.
The concentrated solution outlet of the desalination reverse osmosis device 14, the permeate outlet of the secondary concentration reverse osmosis device 18 and the permeate outlet of the tertiary concentration reverse osmosis device 22 are respectively connected with the inlet of the filter tank 6 through pipelines.
And a pipeline between the ultrafiltration device 5 and the filter tank 6 is connected with a backwashing pump 7 through a pipeline.
According to the structure, as shown in figures 1 and 2, when the device works, the pH value of the inlet water of the spinning washing acidic wastewater recovery device can be reduced to 1-2, and the inlet water can directly enter the device without any acid-base regulation. Spinning acid wastewater is collected and stored in an acid wastewater tank 1, is injected into a multi-media filter 3 through a wastewater delivery pump 2, is preliminarily filtered by the multi-media filter 3 to remove particulate matters in the wastewater, and is then injected into a self-cleaning filter 4. The self-cleaning filter 4 can intercept fine particles and fiber substances in the wastewater, and can ensure that intercepted fiber filaments can be fully backwashed, reduce the concentration of suspended matters in the wastewater and provide protection for the ultrafiltration device 5, and the outlet of the self-cleaning filter 4 is connected to the inlet of the ultrafiltration device 5. The ultrafiltration device 5 adopts an acid-resistant hollow fiber membrane element, the pH tolerance is as low as 1, the filtration precision is 0.1 mu m, and external pressure hollow fiber type PVDF material membrane filaments are adopted.
The shell of the self-cleaning filter 4 is preferably made of PP (polypropylene), the filter disc is made of nylon, and the filtering precision is 50 mu m.
The water produced by the ultrafiltration device 5 is connected to the filter tank 6, the outlet of the filter tank 6 is connected to the reverse osmosis booster pump 8, the wastewater is conveyed to the security filter 9 through the reverse osmosis booster pump 8, the security filter 9 is made of UPVC material with good acid resistance, a PP filter element is arranged in the security filter 9, the filtering precision is considered to be 5 microns, and the surface of the reverse osmosis membrane element can be protected from being damaged by particles. The outlet of the cartridge filter 9 is connected to the inlet of a primary high-pressure pump 10, the outlet of the primary high-pressure pump 10 is connected to a primary concentration reverse osmosis device 11, sufficient osmotic pressure is provided by the primary high-pressure pump 10, and the permeate outlet after reverse osmosis desalination is connected to an inlet 12 of a middle tank. An outlet of the intermediate tank 12 enters the desalination reverse osmosis device 14 through the desalination high-pressure pump 13 for re-separation, a permeate outlet of the desalination reverse osmosis device 14 is connected to the desalination water tank 15, permeate becomes desalination water after two-stage reverse osmosis and can be reused, and a concentrate of the desalination reverse osmosis device 14 returns to an inlet of the filter tank 6. Along with the continuous concentration of former waste water, salt content and TOC in aquatic are constantly concentrated, must increase reverse osmosis membrane to salt and TOC's tolerance level step by step to select sufficient pressure-bearing to guarantee that the sulphuric acid in the waste water can constantly concentrate, sufficient runner guarantees the antipollution performance of membrane. In the patent, the first-time concentration reverse osmosis device 11 selects an acid-resistant pollution-resistant roll-type reverse osmosis membrane element, the pH tolerance is as low as 1, and the pressure resistance is 41Bar, and the second-time concentration reverse osmosis device 18 selects an acid-resistant pollution-resistant roll-type reverse osmosis membrane element, the pH tolerance is as low as 1, and the pressure resistance is 120 Bar.
The concentrated solution outlet of the first concentration reverse osmosis device 11 is connected to the inlet of a concentration tank 16, the concentrated solution enters a second concentration reverse osmosis device 18 through a second high-pressure pump 17, the feed liquid is separated, the permeate returns to the filter tank 6, the concentrated solution outlet pipe of the second concentration reverse osmosis device 18 is connected to the inlet of a concentration tank 19, the outlet 19 of the concentration tank is connected to a third concentration reverse osmosis device 22 through a third high-pressure pump 20, the inlet of a circulating pump 21 is connected with the concentrated water outlet of the third high-pressure pump 20 and the third concentration reverse osmosis device 22, the outlet of the circulating pump 21 is connected with the inlet of the third concentration reverse osmosis device 22, the concentrated solution is further concentrated in a concentration section through the third concentration reverse osmosis device 22 and flows to a concentrated acid tank 23, and the permeate of the third concentration reverse osmosis device 22 flows back to the filter tank 6. The third-time concentration reverse osmosis device 22 selects an acid-resistant and pollution-resistant disc-tube type reverse osmosis membrane element with the pH tolerance as low as 1 and the pressure tolerance of 160 Bar. Sulfuric acid in the fiber washing wastewater subjected to the three-time concentration can be concentrated to 80g/L, acid liquor stored in the concentrated acid tank 23 can be further separated, purified and reused, and desalted water TDS stored in the desalted water tank 15 can be less than 100mg/L and can be reused as process production water.
All the above components are prior art, and those skilled in the art can use any model and existing design that can implement their corresponding functions.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (10)
1. A spinning washing acidic wastewater recovery device is characterized by comprising an acidic wastewater tank (1), a wastewater delivery pump (2), a multi-media filter (3), a self-cleaning filter (4), an ultrafiltration device (5), a filter tank (6), a reverse osmosis booster pump (8), a cartridge filter (9), a primary high-pressure pump (10), a primary concentration reverse osmosis device (11), an intermediate tank (12), a desalination high-pressure pump (13), a desalination reverse osmosis device (14) and a desalination water tank (15) which are sequentially connected through pipelines, the primary concentration reverse osmosis device (11) is also sequentially connected with a primary concentration tank (16), a secondary high-pressure pump (17), a secondary concentration reverse osmosis device (18), a secondary concentration tank (19), a tertiary high-pressure pump (20), a circulating pump (21), a tertiary concentration reverse osmosis device (22) and a concentrated acid tank (23) through pipelines.
2. The recycling apparatus of acidic wastewater from spinning water washing as claimed in claim 1, wherein the inlet of said intermediate tank (12) is connected to the permeate outlet of the primary concentrating reverse osmosis device (11) through a pipeline, the inlet of the desalting water tank (15) is connected to the permeate outlet of the desalting reverse osmosis device (14) through a pipeline, the inlet of the primary concentrating tank (16) is connected to the concentrate outlet of the primary concentrating reverse osmosis device (11) through a pipeline, the inlet of the secondary concentrating tank (19) is connected to the concentrate outlet of the secondary concentrating reverse osmosis device (18) through a pipeline, the inlet of the concentrated acid tank (23) is connected to the concentrate outlet of the tertiary concentrating reverse osmosis device (22) through a pipeline, the outlet of the tertiary high pressure pump (20) and the concentrate outlet of the tertiary concentrating reverse osmosis device (22) are further connected to the inlet of the circulating pump (21) through a pipeline, the outlet of the circulating pump (21) is connected with the inlet of the tertiary concentration reverse osmosis device (22) through a pipeline.
3. The spinning water washing acid wastewater recovery device as claimed in claim 2, characterized in that the concentrate outlet of the desalination reverse osmosis device (14), the permeate outlet of the secondary concentration reverse osmosis device (18) and the permeate outlet of the tertiary concentration reverse osmosis device (22) are respectively connected with the inlet of the filter tank (6) through pipelines.
4. The spinning water washing acid wastewater recovery device as claimed in claim 3, characterized in that the pipeline between the ultrafiltration device (5) and the filtration tank (6) is connected with the backwashing pump (7) through a pipeline.
5. The recycling device of acidic waste water from spinning water washing as claimed in any one of claims 1 to 4, wherein said self-cleaning filter (4) is a PP shell, a nylon filter disc, a self-cleaning filter with a filtering accuracy of 50 μm.
6. The recycling device of acidic wastewater from spinning water washing as claimed in any of claims 1 to 4, wherein the ultrafiltration device (5) is internally provided with a hollow fiber membrane element of external pressure hollow fiber type PVDF membrane yarn with pH tolerance not less than 1 and filtration precision of 0.1 μm.
7. The recycling device of acidic waste water from spinning water washing as claimed in any one of claims 1-4, wherein said cartridge filter (9) is a UPVC cartridge filter with built-in PP filter element and 5 μm filtering precision.
8. The recycling device of acidic wastewater from spinning water washing as claimed in any of claims 1-4, wherein said primary concentration reverse osmosis device (11) is a reverse osmosis device with roll type reverse osmosis membrane element, pH tolerance is not less than 1, and pressure tolerance is 41 Bar.
9. The recycling device of acidic waste water from spinning water washing as claimed in any one of claims 1 to 4, wherein said secondary concentration reverse osmosis device (18) is a reverse osmosis device with roll type reverse osmosis membrane element, pH tolerance is not less than 1, and pressure tolerance is 120 Bar.
10. The recycling device of acidic waste water from spinning water washing as claimed in any one of claims 1 to 4, wherein said tertiary concentration reverse osmosis device (22) is a reverse osmosis device with roll type reverse osmosis membrane element, pH tolerance is not less than 1, and tolerance pressure is 160 Bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120660264.5U CN215327278U (en) | 2021-04-01 | 2021-04-01 | Spinning washing acid waste water recovery unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120660264.5U CN215327278U (en) | 2021-04-01 | 2021-04-01 | Spinning washing acid waste water recovery unit |
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| Publication Number | Publication Date |
|---|---|
| CN215327278U true CN215327278U (en) | 2021-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120660264.5U Active CN215327278U (en) | 2021-04-01 | 2021-04-01 | Spinning washing acid waste water recovery unit |
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| CN (1) | CN215327278U (en) |
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2021
- 2021-04-01 CN CN202120660264.5U patent/CN215327278U/en active Active
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