CN219462785U - Leather liming liquid circulation and treatment device - Google Patents
Leather liming liquid circulation and treatment device Download PDFInfo
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- CN219462785U CN219462785U CN202320148400.1U CN202320148400U CN219462785U CN 219462785 U CN219462785 U CN 219462785U CN 202320148400 U CN202320148400 U CN 202320148400U CN 219462785 U CN219462785 U CN 219462785U
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Abstract
The application relates to the technical field of leather wastewater treatment equipment, in particular to a leather liming liquid circulating and treating device, which comprises a water inlet pump set, a first filter set, a stirring box, a sedimentation tank, a second filter, a sludge tank, a dosing unit and a sewage draining unit; the sewage outlet of the water inlet pump set is communicated with the sludge pool, and the water outlet of the water inlet pump set is communicated with the stirring tank; the stirring box is communicated with the sedimentation tank, the water outlet of the sedimentation tank is communicated with the second filter, and the sewage outlet of the sedimentation tank is communicated with the sludge tank; the dosing unit is communicated with the stirring box; the sewage discharging unit is communicated with a sewage discharging outlet of the sludge pond; the application has the treatment processes of the grey water of two kinds of different quality of water of being convenient for realization through the cooperation of intake pump group, first filter group, agitator tank, sedimentation tank, second filter and dosing unit, and then improves the treatment effeciency of grey water, is convenient for add the medicine to the agitator tank through dosing unit, improves the simplicity of grey water treatment, is convenient for handle the effect of handling the exhaust mud through blowdown unit.
Description
Technical Field
The application relates to the technical field of leather wastewater treatment equipment, in particular to a leather liming liquid circulation and treatment device.
Background
The leather industry is the light industry which is inferior to the paper industry in high water consumption and heavy pollution industry, leather gray water is high in water consumption and large in water quality fluctuation, the leather gray water contains high concentration of sulfur (S2-) and Cr (III), the pH value of waste water is between 8 and 10, and due to grease, broken meat, skin residue, hair, blood and the like generated by the leather manufacturing process, the waste water also contains high-content suspended matters and high chromaticity, the content of the suspended matters is between 2000 and 4000 mg/L, the chromaticity dilution factor is 600 to 3600 times, and the preservative used in the leather manufacturing process also causes phenolic pollution with possibly small oil content in the waste water. The aim of the treatment of the grey water in the leather industry is to remove suspended matters.
In the prior art, the main treatment technology of grey water in leather industry comprises an iron salt sedimentation method, a chemical coagulation method and a catalytic oxidation method. The iron oxide sedimentation method realizes the removal effect by utilizing the FeSO4 and S2-formed sediment in the grey water, and the method has thorough treatment effect, but has large mud yield, large medicament consumption and high cost; the chemical coagulation method is to add coagulant such as alkali AlCl3 into the grey water to form suspended matters into flocs, and then further separate the flocs by precipitation or air floatation. The method has remarkable treatment effect on suspended matters, but the S2-content in the effluent still does not reach the standard. The catalytic oxidation method uses MnSO4 as a catalyst, and uses air for oxidation, thereby realizing harmless treatment of the grey water, and has the advantages of safe operation, low input cost and high desulfurization rate, and FeSO4 is generally required to be added as an auxiliary desulfurizing agent for recycling protein in the grey water.
Aiming at the related technology, the inventor considers that the grey water in the leather industry has large fluctuation of water quality and higher content of suspended matters, and the grey water can be recycled by simple filtration without adding medicines when the water quality is better, and various technologies used in the prior art need to be carried out according to unified procedures, thereby influencing the efficiency and the simplicity of the grey water treatment.
Disclosure of Invention
In order to further explore a more efficient and simple grey water recycling technology, the application provides a leather liming liquid circulating and treating device.
The application provides a leather liming liquid circulation and processing apparatus adopts following technical scheme:
the utility model provides a leather liming liquid circulation and processing apparatus, includes intake pump group, first filter group, agitator tank, sedimentation tank, second filter, mud pond, dosing unit and blowdown unit;
the sewage outlet of the water inlet pump set is communicated with the sludge pool, and the water outlet of the water inlet pump set is communicated with the stirring box;
the stirring box is communicated with the sedimentation tank, the water outlet of the sedimentation tank is communicated with the second filter, and the sewage outlet of the sedimentation tank is communicated with the sludge tank;
the medicine adding units are two groups and are communicated with the stirring box and used for adding medicines into the stirring box;
the sewage draining unit is communicated with the sewage draining outlet of the sludge tank and is used for realizing filter pressing and dehydration of sludge.
By adopting the technical scheme, when the quality of the grey water is good, the grey water is pumped into the first filter group by the water inlet pump group for filtering, after the grey water is filtered by the filter group, a part of suspended matters in the grey water enter the sludge tank through the conveying pipeline, the rest grey water enters the sedimentation tank through the filter box for sedimentation, and then is filtered by the second filter and then discharged for recycling, when the recycling times of the grey water reach a certain limit value, when the effluent water of the step can not reach the recycling standard, the effluent water of the filter group enters the stirring tank, feSO4 and PAM are input into the stirring tank by the medicine adding unit, after the grey water reacts with the FeSO4 and PAM, the effluent water enters the sedimentation tank for coagulating sedimentation to remove sulfides, and then the filtered effluent water reaches the standard after being filtered by the second filter, the discharged sludge in the filter group and the sedimentation tank enters the sludge tank for recycling, the supernatant after further treatment enters the external water storage tank, and the sludge at the bottom of the sludge tank enters the sewage draining unit for treatment through the drain port; the leather liming liquid circulation and processing apparatus of design is convenient for realize the treatment process of the grey water of two kinds of different quality of water through the cooperation of intake pump group, first filter group, agitator tank, sedimentation tank, second filter and dosing unit, and then improves grey water's treatment effeciency, is convenient for add the medicine to the agitator tank through dosing unit, improves grey water treatment's simplicity, is convenient for handle the exhaust mud through blowdown unit.
In a specific embodiment, the dosing unit comprises a medicament tank and a dosing pump;
the medicine feeding port of the medicine feeding pump is communicated with the medicine box, and the medicine feeding pump is communicated with the stirring box.
Through adopting above-mentioned technical scheme, the dosing unit of design is convenient for deposit the medicine that needs to add through the medical kit, is convenient for pump into the agitator tank with the medicine from the medical kit through the dosing pump.
In a specific embodiment, the medicament tank is provided with a first stirrer.
Through adopting above-mentioned technical scheme, the first agitator of design is convenient for realize the even mixing of medicament in the medicament case.
In a specific embodiment, the blowdown unit comprises a spiral shell stacking mud press and a blowdown pump set;
the sewage inlet of the sewage pump set is communicated with the sewage outlet of the sludge pond, and the sewage outlet of the sewage pump set is communicated with the mud inlet of the spiral shell mud pressing machine.
By adopting the technical scheme, the sludge pump in the sludge pond is pumped into the spiral-pile mud pressing machine by the sewage pump group, and the spiral-pile mud pressing machine compresses the water-containing sludge; the designed sewage draining unit is convenient for pumping the sludge from the sludge pool to the spiral shell stacking mud pressing machine through the sewage draining pump set, and is convenient for dewatering the sludge through the spiral shell stacking mud pressing machine.
In a specific embodiment, the flow rate of the water inlet pump set is 5-15 m/h.
By adopting the technical scheme, the designed water inlet pump set with the flow of 5-15 m/h can reach the balance between the filtering capacity and the water inlet speed of the first filter set.
In a specific embodiment, the hydraulic retention time of the stirring tank is 1-3h, the hydraulic retention time of the sedimentation tank is 3-6h, and the hydraulic retention time of the sludge tank is 1-3h.
By adopting the technical scheme, the designed hydraulic retention time is convenient for the grey water to obtain the optimal reaction or precipitation time in each scene.
In a specific embodiment, a second sewage pump is installed on the communicating pipes of the sedimentation tank and the sludge tank.
By adopting the technical scheme, the designed second sewage pump can improve the speed of the sludge in the sedimentation tank entering the sludge tank.
In a specific embodiment, the agitator tank has at least one second agitator mounted thereon.
Through adopting above-mentioned technical scheme, the second agitator of design, the medicine of being convenient for add the medicine unit and add to the agitator tank in and carry out abundant reaction with the ash water in the agitator tank.
In a specific implementation, the water outlet of the water inlet pump set is directly communicated with the water inlet of the stirring tank through a pipeline.
Through adopting above-mentioned technical scheme, the agitator tank of design and water inlet pump package direct communication can omit a filtration step under the better circumstances of quality of grey water, further improves grey water's treatment effeciency.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the leather liming liquid circulation and processing apparatus of design is convenient for realize the treatment process of the grey water of two kinds of different quality of water through the cooperation of intake pump group, first filter group, agitator tank, sedimentation tank, second filter and dosing unit, and then improves grey water's treatment effeciency, is convenient for add the medicine to the agitator tank through dosing unit, improves grey water treatment's simplicity, is convenient for handle the exhaust mud through blowdown unit.
2. The designed leather liming liquid circulation and treatment device is convenient for pumping the sludge from the sludge pool to the spiral shell stacking mud pressing machine through the sewage pump set, and is convenient for carrying out dehydration treatment on the sludge through the spiral shell stacking mud pressing machine.
3. The designed leather liming liquid circulation and treatment device is convenient for the drug adding unit to add to the drug in the stirring tank and the gray water in the stirring tank to fully react through the second stirrer.
Drawings
FIG. 1 is a schematic diagram of a system flow of a leather liming liquid circulation and treatment device according to an embodiment of the present application;
FIG. 2 is a schematic view of a portion of the structure of FIG. 1, intended to illustrate the connection of the dosing unit and the stirring tank;
fig. 3 is a partial schematic structural view of fig. 1, which is intended to illustrate the connection relationship of the sewage disposal unit and the sludge basin.
Reference numerals illustrate: 1. a water inlet pump group; 2. a first filter group; 3. a stirring tank; 31. a second stirrer; 4. a sedimentation tank; 5. a second filter; 6. a sludge pool; 7. a dosing unit; 71. a medicament box; 711. a first agitator; 72. a dosing pump; 8. a sewage discharge unit; 81. a spiral shell stacking mud pressing machine; 82. a drainage pump set; 9. and a second sewage pump.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-3.
The embodiment of the application discloses a leather liming liquid circulation and treatment device.
Referring to fig. 1, a leather liming liquid circulation and treatment device comprises a water inlet pump set 1, a first filter set 2, a stirring tank 3, a sedimentation tank 4, a second filter 5, a sludge tank 6, a dosing unit 7 and a sewage discharging unit 8, wherein the water inlet pump set 1 comprises a water inlet pump and at least one standby water inlet pump so as to prevent the water inlet pump from being stopped when damaged, and the flow rate of the water inlet pump is 5-15m < DEG >/h; the first filter group 2 comprises an electric suction type self-cleaning filter and at least one standby electric suction type self-cleaning filter, and water outlets of the water inlet pump and the standby water inlet pump are communicated with water inlets of the electric suction type self-cleaning filter and the standby electric suction type self-cleaning filter.
Referring to fig. 1 and 2, the sewage outlet of the first filter group 2 is communicated with the sludge pond 6, the water outlet of the first filter group 2 is communicated with the water inlet of the stirring tank 3, the water outlet of the stirring tank 3 is communicated with the sedimentation tank 4, the second filter 5 is arranged on the sedimentation tank 4, the second filter 5 is a quartz sand filter in the embodiment, and the ash water in the sedimentation tank 4 is discharged for recycling after being filtered by the second filter 5.
Referring to fig. 1 and 2, the sewage outlet of the sedimentation tank 4 is communicated with the sewage inlet of the sludge tank 6 through a communicating pipeline, and the communicating pipeline is connected with a second sewage pump 9 through a flange; the water outlet of the sludge tank 6 is communicated with the stirring tank 3 through a pipeline, and the water outlet of the water inlet pump set 1 is directly communicated with the stirring tank 3 through a pipeline in order to facilitate further improving the treatment efficiency of the gray water with better water quality.
Referring to fig. 1, in order to achieve a balance between the effect of treating the grey water and the treatment efficiency, the hydraulic retention time in the stirring tank 3 is 1 to 3 hours, in this example 2 hours, the hydraulic retention time in the sedimentation tank 4 is 3 to 6 hours, in this example 4 hours, and the hydraulic retention time in the sludge tank 6 is 1 to 3 hours, in this example 2 hours.
Referring to fig. 1 and 2, the number of the dosing units 7 is two, the dosing units 7 include a medicine tank 71 and a dosing pump 72, feSO4 is accommodated in one medicine tank 71, PAM is accommodated in the other medicine tank 71, a medicine inlet of the dosing pump 72 is communicated with the medicine tank 71, a medicine outlet of the dosing pump 72 is communicated with the stirring tank 3, the dosing pump 72 pumps medicine in the medicine tank 71 into the stirring tank 3, a first stirrer 711 is installed on the medicine tank 71 for facilitating uniform mixing of the medicine in the medicine tank 71, at least one second stirrer 31 is installed on the stirring tank 3 for facilitating uniform mixing of grey water and the medicine in the stirring tank 3, and two second stirrers 31 are installed on the stirring tank 3 in this embodiment.
Referring to fig. 1 and 3, the sewage unit 8 includes a spiral shell mud press 81 and a sewage pump set 82, the sewage pump set 82 includes a first sewage pump and at least one standby first sewage pump, a sewage inlet of the first sewage pump is communicated with a sewage outlet at the lower end of the sludge pond 6, and a sewage outlet of the first sewage pump is communicated with an inlet of the spiral shell mud press 81.
The implementation principle of the leather liming liquid circulation and treatment device provided by the embodiment of the application is as follows: when the quality of the grey water is good, the grey water is pumped into the first filter group 2 by the water inlet pump group 1 for filtering, part of suspended matters in the grey water enter the sludge tank 6 through the conveying pipeline after being filtered by the filter group, the rest of the grey water enters the sedimentation tank 4 for sedimentation through the filter box and is discharged for recycling after being filtered by the second filter 5, when the recycling times of the grey water reach a certain limit value, the effluent water of the filter group enters the stirring tank 3 when the effluent water of the steps cannot reach the recycling standard, feSO4 and PAM are input into the stirring tank 3 by the dosing unit 7, after the grey water reacts with the FeSO4 and the PAM, the effluent water enters the sedimentation tank 4 for coagulating sedimentation to remove sulfides, and then the sediment tank 4 is filtered by the second filter 5 for recycling after reaching the standard, wherein the sludge discharged from the filter group and the sedimentation tank 4 enters the sludge tank 6, the supernatant liquid after further treatment enters the external water storage tank, and the sludge at the bottom of the sludge tank 6 enters the sewage draining unit 8 for treatment through the sewage draining unit 8.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (9)
1. The utility model provides a leather liming liquid circulation and processing apparatus which characterized in that: comprises a water inlet pump set (1), a first filter set (2), a stirring box (3), a sedimentation tank (4), a second filter (5), a sludge tank (6), a dosing unit (7) and a sewage draining unit (8);
the sewage outlet of the water inlet pump set (1) is communicated with the sludge pond (6), and the water outlet of the water inlet pump set (1) is communicated with the stirring box (3);
the stirring tank (3) is communicated with the sedimentation tank (4), the water outlet of the sedimentation tank (4) is communicated with the second filter (5), and the sewage outlet of the sedimentation tank (4) is communicated with the sludge tank (6);
the two groups of dosing units (7) are communicated with the stirring box (3) and are used for adding medicines into the stirring box (3);
the sewage draining unit (8) is communicated with a sewage draining outlet of the sludge tank (6) and is used for realizing filter pressing and dehydration of sludge.
2. The leather liming liquid circulation and treatment device according to claim 1, wherein: the dosing unit (7) comprises a medicament box (71) and a dosing pump (72);
the medicine inlet of the medicine adding pump (72) is communicated with the medicine box (71), and the medicine outlet of the medicine adding pump (72) is communicated with the stirring box (3).
3. The leather liming liquid circulation and treatment device according to claim 2, wherein: a first agitator (711) is mounted on the medicine box (71).
4. The leather liming liquid circulation and treatment device according to claim 1, wherein: the sewage draining unit (8) comprises a spiral mud stacking machine (81) and a sewage draining pump set (82);
the sewage inlet of the sewage pump set (82) is communicated with the sewage outlet of the sludge pond (6), and the sewage outlet of the sewage pump set (82) is communicated with the mud inlet of the spiral shell mud stacking machine (81).
5. The leather liming liquid circulation and treatment device according to claim 1, wherein: the flow rate of the water inlet pump set (1) is 5-15 m/h.
6. The leather liming liquid circulation and treatment device according to claim 1, wherein: the hydraulic retention time of the stirring tank (3) is 1-3h, the hydraulic retention time of the sedimentation tank (4) is 3-6h, and the hydraulic retention time of the sludge tank (6) is 1-3h.
7. The leather liming liquid circulation and treatment device according to claim 1, wherein: and a second sewage pump (9) is arranged on the communicating pipeline of the sedimentation tank (4) and the sludge tank (6).
8. The leather liming liquid circulation and treatment device according to claim 1, wherein: at least one second stirrer (31) is arranged on the stirring box (3).
9. The leather liming liquid circulation and treatment device according to claim 1, wherein: the water outlet of the water inlet pump set (1) is directly communicated with the water inlet of the stirring tank (3) through a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320148400.1U CN219462785U (en) | 2023-01-30 | 2023-01-30 | Leather liming liquid circulation and treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320148400.1U CN219462785U (en) | 2023-01-30 | 2023-01-30 | Leather liming liquid circulation and treatment device |
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| Publication Number | Publication Date |
|---|---|
| CN219462785U true CN219462785U (en) | 2023-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320148400.1U Active CN219462785U (en) | 2023-01-30 | 2023-01-30 | Leather liming liquid circulation and treatment device |
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| CN (1) | CN219462785U (en) |
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2023
- 2023-01-30 CN CN202320148400.1U patent/CN219462785U/en active Active
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