Integrated treatment equipment for production sewage

Abstract

The utility model discloses integrated treatment equipment for production sewage. The integrated treatment equipment comprises a lifting well, a collecting water tank, a coagulative precipitation tank, an activated sludge tank, an MBR (Membrane Bioreactor) membrane tank, a recycling water tank and a sludge treatment device, the coagulative precipitation tank comprises a coagulative reaction tank and an inclined tube precipitation tank, a dosing system is arranged on one side of the coagulative reaction tank, the dosing system is communicated with the coagulative reaction tank through a pipeline, a coagulant is added into the coagulative reaction tank, and a sludge hopper is arranged at the bottom end of the inclined tube precipitation tank; and two sides of the sludge treatment device are respectively connected with the sludge bucket and the activated sludge tank through pipelines. The integrated treatment equipment for the production sewage has the advantage that harmful substances in the sewage can be fully treated by the integrated treatment equipment for the production sewage.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to an integrated production sewage treatment device. Background Art

[0002] A large amount of wastewater will be generated during the production process in the workshop. In order to reduce the pollution of sewage to the environment, the government has set limit standards for the sewage discharge of construction units. Therefore, the construction unit plans to treat the production wastewater and recycle it back to production, and the unused part will be discharged to the municipal sewage network.

[0003] The workshop will discharge different types of waste liquid in each process. When treating the wastewater, the general treatment method of domestic manufacturers is to drain the waste liquid of various processes separately, and then concentrate the waste liquid with similar components or similar treatment in the same reaction tank, and then add coagulant to the wastewater to form sediment, and filter the sediment formed in the wastewater to remove harmful substances in the wastewater. The existing sewage treatment equipment does not adequately treat harmful substances in sewage, and improvements need to be made. Utility Model Content

[0004] The utility model aims to provide an integrated production sewage treatment device which can fully treat harmful substances in sewage.

[0005] The utility model provides an integrated production sewage treatment equipment, including a lifting well, a collecting water tank, a coagulation sedimentation tank, an activated sludge tank, an MBR membrane tank, a recycling water tank and a sludge treatment device, wherein the lifting well, the collecting water tank, the coagulation sedimentation tank, the activated sludge tank, the MBR membrane tank and the recycling water tank are arranged in sequence and connected;

[0006] The coagulation sedimentation tank includes a coagulation reaction tank and an inclined tube sedimentation tank. A dosing system is arranged on one side of the coagulation reaction tank. The dosing system is connected to the coagulation reaction tank by a pipeline and adds coagulant into the coagulation reaction tank. A mud hopper is arranged at the bottom end of the inclined tube sedimentation tank. Both sides of the sludge treatment device are respectively connected to the mud hopper and the activated sludge tank by pipelines.

[0007] Preferably, a submersible pump and a first liquid level control device are provided in the lifting well, and the submersible pump is connected to a collection water tank pipeline;

[0008] A lifting pump is arranged between the collecting water tank and the coagulation reaction tank, and a first rotor flowmeter is arranged on the connecting pipeline between the lifting pump and the coagulation reaction tank.

[0009] Preferably, the sludge treatment device comprises a sludge barrel, a pneumatic diaphragm pump and a plate and frame filter press, and two ends of the pneumatic diaphragm pump are respectively connected to the sludge barrel and the plate and frame filter press.

[0010] Preferably, an anaerobic tank is further included, wherein the anaerobic tank is arranged between the inclined tube sedimentation tank and the activated sludge tank, a water distribution system is arranged in the anaerobic tank, a Roots blower is arranged outside the anaerobic tank, and the Roots blower is connected to the water distribution system pipeline in the anaerobic tank.

[0011] Preferably, a support and a plurality of microporous aerators are provided in the activated sludge tank, the plurality of microporous aerators are arranged on the support, and each of the microporous aerators is connected to a Roots blower via a pipeline.

[0012] Preferably, a membrane assembly for intercepting organic pollutants is provided on one side of the MBR membrane pool close to the activated sludge pool, a suction pump and a second rotor flowmeter are provided between the MBR membrane pool and the reuse water tank, both ends of the suction pump are respectively connected to the MBR membrane pool and the reuse water tank pipeline, and the second rotor flowmeter is provided on the pipeline between the suction pump and the reuse water tank pipeline.

[0013] Preferably, the membrane assembly is connected to the Roots blower via a pipeline, the surface area of ​​the membrane assembly is A, and A=120 m2 is satisfied.

[0014] Preferably, the lifting shaft is made of a brick-concrete structure, the collecting water tank is made of a steel-concrete structure, the coagulation sedimentation tank, anaerobic tank, activated sludge tank and MBR membrane tank are all made of an integrated steel structure, and the recycled water tank is made of PE material.

[0015] Preferably, water holes are provided between the anaerobic tank and the activated sludge tank, and between the activated sludge tank and the MBR membrane tank.

[0016] Preferably, a plurality of pH online control devices and a plurality of paddle mixers are provided in the coagulation reaction tank.

[0017] From the above description of the utility model, it can be seen that the utility model has the following beneficial effects:

[0018] 1. The coagulation sedimentation tank in the integrated wastewater treatment equipment includes a coagulation reaction tank and an inclined tube sedimentation tank. The harmful substances in the sewage are mixed and reacted with the coagulant in the coagulation reaction tank and are fully precipitated in the inclined tube sedimentation tank. By separating the reaction and precipitation of the harmful substances in the sewage into two different tanks, the harmful substances in the sewage can be fully reacted and removed.

[0019] 2. The integrated production wastewater treatment equipment is equipped with an activated sludge tank and an MBR membrane tank. The activated sludge tank uses aerobic biological composite bacteria to degrade organic pollutants in the sewage to achieve the purpose of purifying the sewage; the MBR membrane tank uses high-concentration activated sludge in the enhanced MBR membrane biological system to remove organic matter in the sewage, and uses the extremely small filtration pore size of the membrane component to intercept pollutants, thereby fully purifying harmful substances in the sewage. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of an integrated production wastewater treatment device according to an embodiment;

[0021] Figure 2 is a schematic structural diagram of a lifting well and a water collection tank in an embodiment;

[0022] Figure 3 It is a structural schematic diagram of a coagulation sedimentation tank in an embodiment;

[0023] Figure 4 is a schematic structural diagram of a sludge treatment device in an embodiment;

[0024] Figure 5 Schematic diagram of the positions of the inclined tube sedimentation tank, anaerobic tank, activated sludge tank and MBR membrane tank in the embodiment;

[0025] Figure 6 It is an embodiment Figure 5 Sectional view at AA;

[0026] Figure 7 1 is a top view of the inclined tube sedimentation tank, the anaerobic tank, the activated sludge tank and the MBR membrane tank of the embodiment;

[0027] Figure 8 It is a schematic diagram of the structure of the MBR membrane pool and the recycled water tank in the embodiment.

[0028] Figure numerals: 1. lifting well; 11. submersible pump; 12. first liquid level control device; 2. collecting water tank; 21. lifting pump; 22. first rotor flowmeter; 3. coagulation sedimentation tank; 31. coagulation reaction tank; 32. inclined tube sedimentation tank; 321. mud bucket; 33. dosing system; 34. PH online control device; 35. paddle mixer; 4. anaerobic tank; 41. water distribution system; 5. activated sludge tank; 51. bracket; 52. microporous aerator; 6. MBR membrane tank; 61. membrane assembly; 62. suction pump; 63. second rotor flowmeter; 7. recycled water tank; 8. sludge treatment device; 81. sludge barrel; 82. pneumatic diaphragm pump; 83. plate and frame filter press; 9. Roots blower. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the following is a summary of the technical problems, technical solutions and beneficial effects to be solved by the present invention. Figure 1-8 It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] Reference Figure 1, an integrated production wastewater treatment equipment, including a lifting well 1, a collecting water tank 2, a coagulation sedimentation tank 3, an anaerobic tank 4, an activated sludge tank 5, an MBR membrane tank 6, a reuse water tank 7 and a sludge treatment device 8, wherein the lifting well 1, the collecting water tank 2, the coagulation sedimentation tank 3, the anaerobic tank 4, the activated sludge tank 5, the MBR membrane tank 6 and the reuse water tank 7 are arranged in sequence. Pipes are used to connect the lifting well 1 and the collecting water tank 2, and the collecting water tank 2 and the coagulation sedimentation tank 3, and water holes are provided between the coagulation sedimentation tank 3 and the anaerobic tank 4, between the anaerobic tank 4 and the activated sludge tank 5, and between the activated sludge tank 5 and the MBR membrane tank 6, so that the internal parts of the integrated production wastewater treatment equipment are interconnected. The lifting well 1 is set to be a brick-concrete structure, the collecting water tank 2 is set to be a steel concrete structure, the coagulation sedimentation tank 3, the anaerobic tank 4, the activated sludge tank 5 and the MBR membrane tank 6 are all set to be steel integrated structures, and the reuse water tank 7 is made of PE material.

[0031] Reference Figure 2 The sewage from the workshop is discharged into the lifting well 1. A submersible pump 11 and a first liquid level control device 12 are arranged in the lifting well 1. The first liquid level control device 12 is used to display the amount of wastewater in the lifting well 1 to avoid excessive discharge of workshop wastewater into the lifting well 1. The collecting water tank 2 is set to be made of an underground steel concrete structure. The submersible pump 11 and the collecting water tank 2 are connected by a pipeline. The wastewater in the lifting well 1 is pumped into the collecting water tank 2 by the submersible pump 11, and the wastewater is collected and cached by the collecting water tank 2.

[0032] Reference Figure 1 , Figure 3 and Figure 4 , wherein the coagulation sedimentation tank 3 includes a coagulation reaction tank 31 and an inclined tube sedimentation tank 32, and the coagulation reaction tank 31 is connected to the inclined tube sedimentation tank 32. The collecting water tank 2 is connected to the coagulation reaction tank 31 through a pipeline, and a lifting pump 21 and a first rotor flowmeter 22 are arranged on the pipeline between the collecting water tank 2 and the coagulation reaction tank 31. The lifting pump 21 is used to pump the wastewater in the collecting water tank 2 into the coagulation reaction tank 31, and the first rotor flowmeter 22 is used to measure the wastewater pumped into the coagulation reaction tank 31. A dosing system 33 is arranged on one side outside the coagulation sedimentation tank 3, and the dosing system 33 includes six drug pools, each of which is respectively filled with PAM, PAC, alkali, H2O2, FeSO4 and acid. Each drug pool in the dosing system 33 is connected to the coagulation reaction tank 31 through a pipeline, so that PAM, PAC, alkali, H2O2, FeSO4 and acid are added to the coagulation reaction tank 31. A plurality of PH online control devices 34 and a plurality of paddle mixers 35 are provided in the coagulation reaction tank 31. The PH value in the coagulation reaction tank 31 is monitored by the PH online control devices 34, and the added coagulant and sewage are stirred by the paddle mixers 35 to make them fully and evenly mixed.

[0033] By adding various coagulants into the coagulation reaction tank 31, the various coagulants react with the sewage in the coagulation reaction tank 31, and the sewage after fully reacting with the coagulant enters the inclined tube sedimentation tank 32. The harmful substances in the sewage gradually form sludge precipitation in the inclined tube sedimentation tank 32 after fully reacting with the coagulant, and the suspended matter in the sewage is destabilized. A mud hopper 32 is provided at the bottom of the inclined tube sedimentation tank 32, and the sludge treatment device 8 includes a sludge barrel 81, a pneumatic diaphragm pump 82 and a plate-frame filter press 83. The two ends of the pneumatic diaphragm pump 82 are respectively connected to the sludge barrel 81 and the plate-frame filter press 83, and the sludge barrel 81 is connected to the mud hopper 32 through a pipeline. The sludge precipitate formed in the inclined tube sedimentation tank 32 enters the sludge barrel 81 through the pipeline, and the pneumatic diaphragm pump 82 extracts the sludge precipitate in the sludge barrel 81 into the plate and frame filter press 83, and the plate and frame filter press 83 squeezes and dehydrates the sludge precipitate for solidification treatment.

[0034] Reference Figure 5 , Figure 6 and Figure 7 The inclined tube sedimentation tank 32 is connected to the anaerobic tank 4. The sewage in the inclined tube sedimentation tank 32 after the coagulant reaction enters the anaerobic tank 4. The anaerobic tank 4 is provided with a water distribution system 41. A pair of Roots blowers 9 are provided on one side of the anaerobic tank 4. The Roots blowers 9 are connected to the anaerobic tank 4 through a pipeline so that the Roots blowers 9 blow air into the anaerobic tank 4, and the anaerobic bacteria are mainly used for metabolism, thereby degrading the organic pollutants in the sewage. The activated sludge tank 5 is connected to one side of the anaerobic tank 4. A bracket 51 and a plurality of microporous aerators 52 are provided in the activated sludge tank 5. The plurality of microporous aerators 52 are all arranged on the bracket 51. The Roots blowers 9 are connected to each microporous aerator 52 in the activated sludge tank 5. The roots blower 9 blows air into each microporous aerator 52 in the activated sludge tank 5 to aerate and oxygenate the activated sludge tank 5, thereby utilizing aerobic biological composite bacteria to degrade organic pollutants in the sewage to achieve the purpose of purifying the sewage, and solid pollutants will be formed in the activated sludge tank 5. In addition, the sludge barrel 81 in the sludge treatment device 8 is also connected to the activated sludge tank 5 by a pipeline, and the solid pollutants generated in the activated sludge tank 5 are extracted into the sludge barrel 81 for dehydration and solidification treatment.

[0035] Reference Figure 8The MBR membrane pool 6 is arranged on one side of the activated sludge pool 5. A membrane assembly 61 is arranged in the MBR membrane pool 6. The membrane assembly 61 is also connected to the Roots blower 9 by a pipeline. The Roots blower 9 blows air into the membrane assembly 61. The organic matter in the sewage is removed by the high-concentration activated sludge in the enhanced MBR membrane biological system. The pollutants are intercepted by the extremely small filtration aperture of the membrane assembly 61, thereby completing the purification of the sewage. The MBR membrane pool 6 is connected to the recycling water tank 7 on one side thereof by a pipeline, and a suction pump 62 and a second rotor flowmeter 63 are arranged at the pipeline connection between the MBR membrane pool 6 and the recycling water tank 7. The sewage filtered by the membrane assembly 61 is pumped into the recycling water tank 7 by the suction pump 62. The second rotor flowmeter 63 measures the amount of the filtered sewage. The water stored in the recycling water tank 7 can be discharged in compliance with the standards.

[0036] The specific implementation principle of the embodiment of the present application is: when it is necessary to treat the sewage discharged from the workshop, the sewage generated in the workshop is discharged into the lifting well 1, and the amount of sewage discharged into the lifting well 1 is displayed by the first liquid level control device 12 to control the amount of sewage discharged into the lifting well 1. The sewage in the lifting well 1 is pumped into the collecting water tank 2 by the submersible pump 11, and the sewage is collected and buffered in the collecting water tank 2. The sewage in the collecting water tank 2 is pumped into the coagulation reaction tank 31 by the lifting pump 21, and at the same time, the dosing system 33 adds coagulant to the coagulation reaction tank 31. The coagulant is PAM, PAC, alkali, H2O2, FeSO4 and acid. The first rotor flowmeter 22 measures the sewage pumped into the collecting water tank 2, and the added coagulant and sewage are stirred by the paddle mixer 35 to make them fully mixed and uniform. The added coagulant destabilizes the suspended matter in the sewage to form alum floc precipitation. The sewage after sufficient coagulation reaction is discharged into the inclined tube sedimentation tank 32 and precipitated in the inclined tube sedimentation tank 32. The sludge precipitate in the inclined tube sedimentation tank 32 enters the sludge barrel 81 through the pipeline. The pneumatic diaphragm pump 82 extracts the sludge precipitate in the sludge barrel 81 into the plate and frame filter press 83. The plate and frame filter press 83 squeezes and dehydrates the sludge precipitate for solidification treatment.

[0037] The sewage in the inclined tube sedimentation tank 32 after the coagulant reaction enters the anaerobic tank 4, and the Roots blower 9 blows air into the anaerobic tank 4, and the anaerobic bacteria are mainly used to metabolize the sewage, thereby degrading the organic pollutants in the sewage. Subsequently, the sewage in the anaerobic tank 4 after the anaerobic bacteria metabolism enters the activated sludge tank 5, and the Roots blower 9 blows air into each microporous aerator 52 in the activated sludge tank 5 to aerate and oxygenate the activated sludge tank 5, so as to use aerobic biological composite bacteria to degrade the organic pollutants in the sewage and achieve the purpose of purifying the sewage. At the same time, the solid pollutants formed in the activated sludge tank 5 are extracted into the sludge barrel 81 for dehydration and solidification treatment. The degraded sewage in the activated sludge tank 5 enters the MBR membrane tank 6, and the Roots blower 9 blows air into the membrane assembly 61, using the high-concentration activated sludge in the enhanced MBR membrane biological system to remove organic matter in the sewage, and using the extremely small filtration aperture of the membrane assembly 61 to intercept pollutants. Afterwards, the sewage filtered by the membrane assembly 61 is pumped into the recycling water tank 7 by the suction pump 62 and can be discharged in compliance with the discharge standards.

[0038] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all protected by the utility model.

Claims

1. An integrated production wastewater treatment device, characterized in that: It includes a lifting well, a collecting water tank, a coagulation sedimentation tank, an activated sludge tank, an MBR membrane tank, a recycling water tank and a sludge treatment device, wherein the lifting well, the collecting water tank, the coagulation sedimentation tank, the activated sludge tank, the MBR membrane tank and the recycling water tank are arranged in sequence and are connected; The coagulation sedimentation tank includes a coagulation reaction tank and an inclined tube sedimentation tank. A dosing system is arranged on one side of the coagulation reaction tank. The dosing system is connected to the coagulation reaction tank by a pipeline and adds coagulant into the coagulation reaction tank. A mud hopper is arranged at the bottom end of the inclined tube sedimentation tank. Both sides of the sludge treatment device are respectively connected to the mud hopper and the activated sludge tank by pipelines.

2. The integrated production wastewater treatment equipment according to claim 1 is characterized in that: A submersible pump and a first liquid level control device are provided in the lifting well, and the submersible pump is connected to a collection water tank pipeline; A lifting pump is arranged between the collecting water tank and the coagulation reaction tank, and a first rotor flowmeter is arranged on the connecting pipeline between the lifting pump and the coagulation reaction tank.

3. The integrated production wastewater treatment equipment according to claim 1 is characterized in that: The sludge treatment device comprises a sludge barrel, a pneumatic diaphragm pump and a plate-frame filter press, and two ends of the pneumatic diaphragm pump are respectively connected to the sludge barrel and the plate-frame filter press.

4. The integrated production wastewater treatment equipment according to claim 1 is characterized in that: The invention also comprises an anaerobic tank, which is arranged between the inclined tube sedimentation tank and the activated sludge tank. A water distribution system is arranged in the anaerobic tank, a Roots blower is arranged outside the anaerobic tank, and the Roots blower is connected with the water distribution system pipeline in the anaerobic tank.

5. The integrated production wastewater treatment equipment according to claim 4 is characterized in that: A support and a plurality of microporous aerators are arranged in the activated sludge tank. The plurality of microporous aerators are arranged on the support, and each of the microporous aerators is connected with a Roots blower through a pipeline.

6. The integrated production wastewater treatment equipment according to claim 1 is characterized by: A membrane assembly for intercepting organic pollutants is arranged on one side of the MBR membrane pool close to the activated sludge pool, a suction pump and a second rotor flowmeter are arranged between the MBR membrane pool and the reuse water tank, two ends of the suction pump are respectively connected to the MBR membrane pool and the reuse water tank pipeline, and the second rotor flowmeter is arranged on the pipeline between the suction pump and the reuse water tank pipeline.

7. The integrated production wastewater treatment equipment according to claim 6 is characterized by: The membrane assembly is connected to the Roots blower via a pipeline, the surface area of ​​the membrane assembly is A, and A=120 m2 is satisfied.

8. The integrated production wastewater treatment equipment according to claim 4 is characterized by: The lifting shaft is made of a brick-concrete structure, the collecting water tank is made of a steel-concrete structure, the coagulation sedimentation tank, anaerobic tank, activated sludge tank and MBR membrane tank are all made of an integrated steel structure, and the recycled water tank is made of PE material.

9. The integrated production wastewater treatment equipment according to claim 4 is characterized by: Water holes are provided between the anaerobic tank and the activated sludge tank, and between the activated sludge tank and the MBR membrane tank.

10. The integrated production wastewater treatment equipment according to claim 1 is characterized by: The coagulation reaction tank is provided with a plurality of PH online control devices and a plurality of paddle mixers.

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