CN116534940A - Dye wastewater treatment and effective resource recovery device - Google Patents
Dye wastewater treatment and effective resource recovery device Download PDFInfo
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- CN116534940A CN116534940A CN202310638649.5A CN202310638649A CN116534940A CN 116534940 A CN116534940 A CN 116534940A CN 202310638649 A CN202310638649 A CN 202310638649A CN 116534940 A CN116534940 A CN 116534940A
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- 238000011084 recovery Methods 0.000 title claims abstract description 30
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 99
- 239000002351 wastewater Substances 0.000 claims abstract description 40
- 230000007246 mechanism Effects 0.000 claims abstract description 35
- 239000010865 sewage Substances 0.000 claims abstract description 34
- 239000007921 spray Substances 0.000 claims abstract description 34
- 238000009833 condensation Methods 0.000 claims abstract description 32
- 230000005494 condensation Effects 0.000 claims abstract description 32
- 238000010438 heat treatment Methods 0.000 claims abstract description 30
- 238000001914 filtration Methods 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 10
- 230000000712 assembly Effects 0.000 claims abstract description 9
- 238000000429 assembly Methods 0.000 claims abstract description 9
- 238000004064 recycling Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 47
- 238000005485 electric heating Methods 0.000 claims description 10
- 238000001704 evaporation Methods 0.000 claims description 9
- 230000008020 evaporation Effects 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 abstract description 5
- 229910017053 inorganic salt Inorganic materials 0.000 abstract description 3
- 239000000975 dye Substances 0.000 description 31
- 238000000889 atomisation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004043 dyeing Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000009834 vaporization Methods 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000979 synthetic dye Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/06—Flash evaporation
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F2101/308—Dyes; Colorants; Fluorescent agents
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention discloses a dye wastewater treatment and effective resource recovery device and method, comprising a high-pressure section, a first wastewater tank and a water storage component, wherein the high-pressure section comprises a pressurizing mechanism; the first wastewater tank and the water storage assembly are communicated with the pressurizing mechanism; the first wastewater tank is communicated with a heating pipeline through a first pipeline, and a flowmeter and a first filter are arranged on the first pipeline; the water storage component is communicated with the heating pipeline; a low pressure section comprising a flash tank and a filter assembly; the filter assembly is provided with at least two groups, and the two groups of filter assemblies are respectively communicated with the flash tank; a temperature and pressure detection assembly and a spray head are arranged in the flash tank; the heating pipeline is communicated with the spray head; the drainage section comprises a vacuum pump and a condensation water storage mechanism; the vacuum pump, the condensation water storage mechanism and the two filtering components are mutually communicated. The invention can realize continuous separation of high-salinity wastewater rich in dye, and realize recycling of dye and inorganic salt while achieving sewage treatment.
Description
Technical Field
The invention relates to the technical field of shooting equipment, in particular to a dye wastewater treatment and effective resource recovery device.
Background
A large number of synthetic dyes are used for product coloration in textile, leather, paper, plastics and rubber industries, but only part of the dye is effectively utilized in the actual dyeing process, and the rest remains in water. In addition, inorganic salts, typified by sodium chloride and sodium sulfate, are often added as dyeing aids to enhance dye uptake by fabrics to increase dye uptake, thus producing a large amount of dye-rich high salinity wastewater.
Such waste water, which is not properly disposed of, is directly discharged, not only waste of water resources, valuable dyes and inorganic salts, but also serious threat to the environment and human health. The traditional printing and dyeing wastewater treatment methods mainly comprise adsorption, advanced oxidation, coagulation/flocculation, biodegradation and the like, but the methods are mainly used for removing dyes in wastewater and cannot realize recovery of valuable resources.
Therefore, a dye wastewater treatment and effective resource recovery device is provided.
Disclosure of Invention
The invention aims to provide a dye wastewater treatment and effective resource recovery device, which aims to solve or improve at least one of the technical problems.
In order to achieve the above object, the present invention provides the following solutions: the invention provides a dye wastewater treatment and effective resource recovery device, which comprises:
the high-pressure section comprises a pressurizing mechanism, a first wastewater tank and a water storage component; the first wastewater tank and the water storage component are communicated with the pressurizing mechanism; the first wastewater tank is communicated with a heating pipeline through a first pipeline, and a flowmeter and a first filter are arranged on the first pipeline; the water storage component is communicated with the heating pipeline;
a low pressure section comprising a flash tank and a filter assembly; the filter assembly is provided with at least two groups, and the two groups of filter assemblies are respectively communicated with the flash tank; a temperature and pressure detection assembly and a spray head are arranged in the flash tank; the heating pipeline is communicated with the spray head;
the drainage section comprises a vacuum pump and a condensation water storage mechanism; the vacuum pump, the condensation water storage mechanism and the two filtering components are mutually communicated.
According to the dye wastewater treatment and effective resource recovery device provided by the invention, the pressurizing mechanism comprises:
an air compressor;
the two pressurizing pipelines are respectively communicated with the first wastewater tank and the water storage component;
the output end of the air compressor is fixedly connected and communicated with the two pressurizing pipelines; the pressurizing pipeline is provided with a first valve.
According to the dye wastewater treatment and effective resource recovery device provided by the invention, the heating pipeline comprises:
the water storage component and the first pipeline are communicated with one end of the liquid inlet pipeline through a three-way joint;
the first electric heating sleeve is arranged on the liquid inlet pipeline;
the pneumatic valve is arranged on the liquid inlet pipeline;
wherein, the liquid inlet pipeline is kept away from the one end of first pipeline with shower nozzle rigid coupling and intercommunication.
According to the dye wastewater treatment and effective resource recovery device provided by the invention, the filtering component comprises a filtering pipeline, and a front valve, a rear valve and a second filter are arranged on the filtering pipeline; the second filter is positioned between the front valve and the rear valve;
one end of each of the two filtering pipelines is connected with a liquid outlet pipeline through a three-way joint, the liquid outlet pipeline is communicated with the inner cavity of the flash tank, and a second electric heating sleeve is arranged on the liquid outlet pipeline; the condensation water storage mechanism is communicated with one end, far away from the liquid outlet pipeline, of the two filtering pipelines, and the vacuum pump is communicated with the two filtering pipelines through the condensation water storage mechanism.
According to the dye wastewater treatment and effective resource recovery device provided by the invention, the condensation water storage mechanism comprises condensation pipelines, and the condensation pipelines are communicated with one ends of the two filtering pipelines, which are far away from the liquid outlet pipeline, through three-way connectors; the condenser, the vacuum pump and the third valve are arranged on the condensing pipeline, and one end of the condensing pipeline, which is far away from the filtering pipeline, is communicated with a water storage tank; the water storage tank is communicated with the flash tank through a water return pipe, and a fourth valve is arranged on the water return pipe.
According to the dye wastewater treatment and effective resource recovery device provided by the invention, the water storage component comprises a water storage tank, and a water outlet pipeline is fixedly connected to the water storage tank; a fifth valve is arranged on the water outlet pipeline; the water outlet pipeline and the first pipeline are communicated with the liquid inlet pipeline through a three-way joint.
According to the dye wastewater treatment and effective resource recovery device provided by the invention, the first pipeline is communicated with the second pipeline, the second pipeline is provided with the second valve, and one end, far away from the first pipeline, of the second pipeline is communicated with the second wastewater tank.
According to the dye wastewater treatment and effective resource recovery device provided by the invention, the temperature and pressure detection assembly comprises a thermocouple and a pressure transformer; the thermocouple and the pressure transformer are both installed on the flash tank, and the detection ends of the thermocouple and the pressure transformer extend into the inner cavity of the flash tank.
The invention also provides a dye wastewater treatment and effective resource recovery method, which comprises the following steps:
step one, discharging sewage into a first wastewater tank, and pressurizing wastewater;
heating one end of the heating pipeline, which is close to the spray head;
step three, one of the filter assemblies is started, and a vacuum pump is started;
step four, after the pressure in the flash tank reaches negative pressure, regulating the pressure and flow entering the heating pipeline;
step five, spraying the sewage into a flash tank through a spray head to generate spray flash evaporation;
step six, the steam in the flash tank flows into a filtering component under the suction effect of a vacuum pump, and the filtered steam is cooled and flows out by a condensation water storage mechanism;
step seven, starting a water storage component after the sewage discharge is finished, and cleaning a first pipeline, a spray head and a flash tank;
and step eight, collecting the dischargeable sewage.
According to the dye wastewater treatment and effective resource recovery method provided by the invention, the spray head adopts a hollow conical atomizing nozzle.
The invention discloses the following technical effects:
the invention provides higher pressure needed by sewage through the pressurizing mechanism, the high-salinity sewage rich in dye in the first sewage tank is led into the heating pipeline, the sewage solution flowing through the spray head is heated through the heating pipeline, the water solution sprayed into the flash tank is in a superheated state by utilizing the principle of atomization flash evaporation, the sensible heat of the superheated liquid is converted into the vaporization latent heat of steam, the liquid temperature is reduced, and a large amount of water vapor is generated; the device is simple, no additional medicament is needed to be added to carry out secondary treatment on the sewage, and the sewage treatment efficiency is improved;
according to the invention, solid impurities are prevented from entering the flash tank through the first filter, the flow rate of the solution is measured through the flowmeter, negative pressure is provided through the vacuum pump, the discharged steam is condensed through the condensation water storage mechanism, and the condensed water is collected, so that the sewage reaches the dischargeable standard, and a good sewage treatment effect is achieved; can realize continuous separation of high-salinity wastewater rich in dye, and realize recycling of dye and inorganic salt while achieving sewage treatment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a dye wastewater treatment and effective resource recovery device according to the present invention;
FIG. 2 is a schematic diagram of the structure of a flash tank according to the present invention;
FIG. 3 is a schematic diagram of a recovery process of the present invention;
1, a first wastewater tank; 2. a first pipe; 3. a flow meter; 4. a first filter; 5. a flash tank; 6. a spray head; 7. a vacuum pump; 8. an air compressor; 9. a pressurized conduit; 10. a liquid inlet pipe; 11. a first electrical heating jacket; 12. a pneumatic valve; 13. a filter tube; 14. a front valve; 15. a rear valve; 16. a second filter; 17. a second electric heating jacket; 18. a condensing duct; 19. a condenser; 20. a third valve; 21. a water storage tank; 22. a water return pipe; 23. a fourth valve; 24. a water storage tank; 25. a water outlet pipe; 26. a fifth valve; 27. a second pipe; 28. a second valve; 29. and a second wastewater tank.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
One of conditions under which the flash evaporation occurs is that the liquid undergoes a transient change in pressure, and since the saturation temperature of the liquid and the saturation pressure are in one-to-one correspondence, the liquid undergoes a sudden decrease in pressure, resulting in a lower saturation temperature of the liquid at the decreased pressure than the initial temperature value of the liquid, so that the liquid is in a superheated state, sensible heat of the superheated liquid is converted into latent heat of vaporization of steam, resulting in a decrease in the temperature of the liquid, and a large amount of water vapor is generated, which is the flash evaporation process. Flash technology has incomparable advantages in sewage treatment and solute separation.
Referring to fig. 1 to 3, the present invention provides a dye wastewater treatment and effective resource recovery apparatus, comprising:
the high-pressure section comprises a pressurizing mechanism, a first wastewater tank 1 and a water storage component; the first wastewater tank 1 and the water storage component are communicated with a pressurizing mechanism; the first wastewater tank 1 is communicated with a heating pipeline through a first pipeline 2, and a flowmeter 3 and a first filter 4 are arranged on the first pipeline 2; the water storage component is communicated with the heating pipeline; the first wastewater tank 1 stores dye-rich high-salinity wastewater, and the water storage component stores water for cleaning the pipeline and the spray head 6; the first filter 4 is adopted to prevent solid impurities from entering the flash tank 5, and the first large-particle filtration is carried out before sewage treatment;
a low pressure section comprising a flash tank 5 and a filter assembly; the filter assemblies are provided with at least two groups, and the two groups of filter assemblies are respectively communicated with the flash tank 5; a temperature and pressure detection assembly and a spray head 6 are arranged in the flash tank 5; the heating pipeline is communicated with the spray head 6; in the embodiment, the flash tank 5 is a cylindrical barrel, and the inside of the flash tank is hollow;
the drainage section comprises a vacuum pump 7 and a condensation water storage mechanism; the vacuum pump 7, the condensation water storage mechanism and the two filtering components are communicated with each other;
so arranged, the high-salinity sewage rich in dye in the first wastewater tank 1 is introduced into a heating pipeline by a pressurizing mechanism to heat the sewage solution flowing through the spray head 6 by the heating pipeline, the water solution sprayed into the flash tank 5 is in a superheated state by utilizing the principle of atomization flash evaporation, the sensible heat of the superheated liquid is converted into the vaporization latent heat of steam, the liquid temperature is reduced, and a large amount of water vapor is generated; the device is simple, no additional medicament is needed to be added to carry out secondary treatment on the sewage, and the sewage treatment efficiency is improved;
according to the invention, solid impurities are prevented from entering the flash tank 5 through the first filter 4, the flow rate of a solution is measured through the flowmeter 3, negative pressure is provided through the vacuum pump 7, the discharged steam is condensed through the condensation water storage mechanism, and the condensed water is collected, so that the sewage reaches the dischargeable standard, and a good sewage treatment effect is achieved; the continuous separation of the high-salinity wastewater rich in the dye can be realized, and the recycling of the dye and inorganic salt can be realized while the sewage treatment is achieved;
after the sewage treatment is finished, clean water in the water storage component is introduced into the flash tank 5, and the first pipeline 2, the spray head 6 and the flash tank 5 are cleaned.
Further preferably, the pressurizing mechanism includes:
an air compressor 8;
the two pressurizing pipelines 9 are arranged, and the two pressurizing pipelines 9 are respectively communicated with the first wastewater tank 1 and the water storage component;
wherein, the output end of the air compressor 8 is fixedly connected and communicated with two pressurizing pipelines 9; the pressurizing pipeline 9 is provided with a first valve;
so configured, the pressurization of the first wastewater tank 1 and the water storage assembly is achieved by the pressurization piping 9 by the pressure provided by the air compressor 8.
Further optimizing scheme, heating pipeline includes:
the liquid inlet pipeline 10, the water storage component and the first pipeline 2 are communicated with one end of the liquid inlet pipeline 10 through a three-way joint; the liquid inlet pipeline 10 is provided with a pressure regulating valve which is positioned between the three-way joint and the first electric heating sleeve 11;
the first electric heating sleeve 11 is arranged on the liquid inlet pipeline 10;
a pneumatic valve 12, the pneumatic valve 12 being mounted on the liquid inlet pipe 10;
wherein, one end of the liquid inlet pipeline 10 far away from the first pipeline 2 is fixedly connected and communicated with the spray head 6;
the arrangement is that the liquid in the liquid inlet pipeline 10 is heated through the first electric heating sleeve 11, so that the sewage solution flowing through the spray head 6 is heated, and atomization flash evaporation is realized; the pneumatic valve 12 is controlled by a remote switch to realize automatic valve opening angle adjustment.
In a further optimized scheme, the filter assembly comprises a filter pipeline 13, and a front valve 14, a rear valve 15 and a second filter 16 are arranged on the filter pipeline 13; a second filter 16 is located between the front valve 14 and the rear valve 15;
one end of the two filtering pipelines 13 is connected with a liquid outlet pipeline through a three-way joint, the liquid outlet pipeline is communicated with the inner cavity of the flash tank 5, and a second electric heating sleeve 17 is arranged on the liquid outlet pipeline; the condensation water storage mechanism is communicated with one end, far away from the liquid outlet pipeline, of the two filtering pipelines 13, and the vacuum pump 7 is communicated with the two filtering pipelines 13 through the condensation water storage mechanism;
so arranged, the particles entering the second filter 16 are ensured to contain no moisture by the second electric heating sleeve 17, so that a part of steam is prevented from being condensed and then changed into liquid to influence the separation and filtration effect; recovery of dye molecules, inorganic salts is achieved through at least two filter pipes 13 and a second filter 16; two second filters 16 are arranged in parallel, any one of the two second filters 16 can be independently opened or closed, in normal operation, one second filter 16 works while the other second filter is in a standby state, and in case of particularly large spray flow, the two second filters 16 are opened, so that the adjustment is convenient according to actual use conditions, and the operation efficiency of the device is improved.
In a further optimized scheme, the condensation water storage mechanism comprises a condensation pipeline 18, and the condensation pipeline 18 is communicated with one ends, far away from the liquid outlet pipeline, of the two filtering pipelines 13 through a three-way joint; the condenser 19, the vacuum pump 7 and the third valve 20 are arranged on the condensation pipeline 18, and one end of the condensation pipeline 18 far away from the filtering pipeline 13 is communicated with the water storage tank 21; the water storage tank 21 is communicated with the flash tank 5 through a water return pipe 22, and a fourth valve 23 is arranged on the water return pipe 22; the condenser 19 is placed on the side of the vacuum pump 7 away from the second filter 16, preventing the vacuum pump 7 from water inflow;
so arranged, the exhausted steam is condensed by the condenser 19, and the negative pressure required by the device is provided by the vacuum pump 7; the water storage tank 21 is used for collecting partial condensed steam possibly existing in the flash tank 5 and condensed water discharged from the condenser 19, thereby achieving the effect of collecting sewage.
In a further optimized scheme, the water storage component comprises a water storage tank 24, and a water outlet pipeline 25 is fixedly connected to the water storage tank 24; a fifth valve 26 is arranged on the water outlet pipeline 25; the water outlet pipeline 25 and the first pipeline 2 are communicated with the liquid inlet pipeline 10 through a three-way joint; the water storage tank 24 is used for storing clean water, and when the water storage tank is cleaned, clean water in the water storage tank 24 is introduced into the first pipeline 2 under the pressurization of the air compressor 8 by opening the fifth valve 26, so that the first pipeline 2, the spray head 6 and the flash tank 5 are cleaned.
In a further optimization scheme, a second pipeline 27 is communicated with the first pipeline 2, a second valve 28 is arranged on the second pipeline 27, and a second wastewater tank 29 is communicated with one end, far away from the first pipeline 2, of the second pipeline 27; the second waste water tank 29 is used as a bypass tank to assist in regulating pressure and flow.
In a further optimized scheme, the temperature and pressure detection assembly comprises a thermocouple and a pressure transformer; the thermocouple and the pressure transformer are both arranged on the flash tank 5, and the detection ends of the thermocouple and the pressure transformer extend into the inner cavity of the flash tank 5; the temperature of the inner cavity of the flash tank 5 is monitored by a thermocouple, and the pressure of the inner cavity of the flash tank 5 is monitored by a pressure transformer.
The invention also provides a dye wastewater treatment and effective resource recovery method, which comprises the following steps:
step one, discharging sewage into a first wastewater tank 1, and pressurizing wastewater; the pressurizing operation is performed by the air compressor 8;
heating one end of the heating pipeline, which is close to the spray head 6;
step three, one of the filter assemblies is started, and a vacuum pump 7 is started; the front valve 14 on one of the filter assemblies is opened in a specific operation position, the rear valve 15 is alternately opened, and then the vacuum pump 7 is opened;
step four, after the pressure in the flash tank 5 reaches negative pressure, regulating the pressure and flow entering the heating pipeline; the pressure and flow rate entering the heating pipeline are regulated through the second valve 28 and the pressure regulating valve;
step five, controlling the pneumatic valve 12 to be opened, so that sewage is sprayed into the flash tank 5 through the spray head 6 to be subjected to spray flash evaporation;
step six, the steam in the flash tank 5 flows into a filtering component under the suction effect of the vacuum pump 7, and the filtered steam is cooled and flows out by the condensation water storage mechanism;
step seven, after the sewage discharge is finished, a water storage component is started, and the first pipeline 2, the spray head 6 and the flash tank 5 are cleaned;
and step eight, collecting the dischargeable sewage.
According to a further optimization scheme, the spray head 6 adopts a hollow conical atomizing nozzle, and the spray head 6 can be used for atomizing a solution at an angle of 30-150 degrees, so that spray flash evaporation is realized.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (10)
1. A dye wastewater treatment and effective resource recovery device is characterized by comprising:
the high-pressure section comprises a pressurizing mechanism, a first wastewater tank (1) and a water storage component; the first wastewater tank (1) and the water storage component are communicated with the pressurizing mechanism; the first wastewater tank (1) is communicated with a heating pipeline through a first pipeline (2), and a flowmeter (3) and a first filter (4) are arranged on the first pipeline (2); the water storage component is communicated with the heating pipeline;
a low pressure section comprising a flash tank (5) and a filter assembly; the filter assembly is provided with at least two groups, and the two groups of filter assemblies are respectively communicated with the flash tank (5); a temperature and pressure detection assembly and a spray head (6) are arranged in the flash tank (5); the heating pipeline is communicated with the spray head (6);
the drainage section comprises a vacuum pump (7) and a condensation water storage mechanism; the vacuum pump (7), the condensation water storage mechanism and the two filtering components are mutually communicated.
2. The dye wastewater treatment and effective resource recovery device according to claim 1, wherein: the pressurizing mechanism includes:
an air compressor (8);
the two pressurizing pipelines (9) are arranged, and the two pressurizing pipelines (9) are respectively communicated with the first wastewater tank (1) and the water storage component;
the output end of the air compressor (8) is fixedly connected and communicated with the two pressurizing pipelines (9); the pressurizing pipeline (9) is provided with a first valve.
3. The dye wastewater treatment and effective resource recovery device according to claim 1, wherein: the heating pipe includes:
the water storage component and the first pipeline (2) are communicated with one end of the liquid inlet pipeline (10) through a three-way joint;
the first electric heating sleeve (11) is arranged on the liquid inlet pipeline (10);
a pneumatic valve (12), the pneumatic valve (12) being mounted on the liquid inlet pipe (10);
wherein, the one end that feed liquor pipeline (10) kept away from first pipeline (2) with shower nozzle (6) rigid coupling and intercommunication.
4. The dye wastewater treatment and effective resource recovery device according to claim 3, wherein: the filter assembly comprises a filter pipeline (13), wherein a front valve (14), a rear valve (15) and a second filter (16) are arranged on the filter pipeline (13); -said second filter (16) is located between said front valve (14) and said rear valve (15);
one end of each of the two filtering pipelines (13) is connected with a liquid outlet pipeline through a three-way joint, the liquid outlet pipeline is communicated with the inner cavity of the flash tank (5), and a second electric heating sleeve (17) is arranged on the liquid outlet pipeline; the condensation water storage mechanism is communicated with one ends, far away from the liquid outlet pipelines, of the two filtering pipelines (13), and the vacuum pump (7) is communicated with the two filtering pipelines (13) through the condensation water storage mechanism.
5. The dye wastewater treatment and effective resource recovery device according to claim 4, wherein: the condensation water storage mechanism comprises condensation pipelines (18), and the condensation pipelines (18) are communicated with one ends, far away from the liquid outlet pipelines, of the two filtering pipelines (13) through three-way connectors; a condenser (19), the vacuum pump (7) and a third valve (20) are arranged on the condensation pipeline (18), and one end, far away from the filtering pipeline (13), of the condensation pipeline (18) is communicated with a water storage tank (21); the water storage tank (21) is communicated with the flash tank (5) through a water return pipe (22), and a fourth valve (23) is arranged on the water return pipe (22).
6. The dye wastewater treatment and effective resource recovery device according to claim 3, wherein: the water storage component comprises a water storage tank (24), and a water outlet pipeline (25) is fixedly connected to the water storage tank (24); a fifth valve (26) is arranged on the water outlet pipeline (25); the water outlet pipeline (25) and the first pipeline (2) are communicated with the liquid inlet pipeline (10) through a three-way joint.
7. The dye wastewater treatment and effective resource recovery device according to claim 1, wherein: the first pipeline (2) is communicated with a second pipeline (27), a second valve (28) is installed on the second pipeline (27), and one end, far away from the first pipeline (2), of the second pipeline (27) is communicated with a second wastewater tank (29).
8. The dye wastewater treatment and effective resource recovery device according to claim 1, wherein: the temperature and pressure detection assembly comprises a thermocouple and a pressure transformer; the thermocouple and the pressure transformer are both arranged on the flash tank (5), and the detection ends of the thermocouple and the pressure transformer extend into the inner cavity of the flash tank (5).
9. A method for treating dye wastewater and recovering effective resources, based on the device for treating dye wastewater and recovering effective resources according to any one of claims 1 to 8, characterized by comprising the steps of:
step one, discharging sewage into a first wastewater tank (1) and pressurizing wastewater;
heating one end of the heating pipeline, which is close to the spray head (6);
step three, one of the filter assemblies is started, and a vacuum pump (7) is started;
step four, after the pressure in the flash tank (5) reaches negative pressure, regulating the pressure and flow entering the heating pipeline;
step five, spraying the sewage into a flash tank (5) through a spray head (6) to generate spray flash evaporation;
step six, the steam in the flash tank (5) flows into a filtering component under the suction effect of a vacuum pump (7), and the filtered steam is cooled and flows out by a condensation water storage mechanism;
step seven, starting a water storage component after the sewage discharge is finished, and cleaning the first pipeline (2), the spray head (6) and the flash tank (5);
and step eight, collecting the dischargeable sewage.
10. The method for treating dye wastewater and recycling effective resources according to claim 9, wherein the method comprises the following steps: the spray head (6) adopts a hollow conical atomizing nozzle.
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