Sewage purification treatment device

Abstract

The utility model discloses a sewage purification treatment device which comprises an oil separation tank, a primary sedimentation tank, a pH (Potential of Hydrogen) callback tank, an anaerobic tank, an aerobic tank, a secondary sedimentation tank, an MBR (Membrane Biological Reactor) membrane tank and a purification device through which sewage flows in sequence, and further comprises an underground comprehensive sewage tank, a secondary filter tank and a regulating tank which are connected in sequence, and further comprises a sludge concentration tank, a sludge filter pressing assembly and a sludge treatment device, sewage can be secondarily utilized after being purified by the purification device, and the secondarily utilized sewage flows into the underground comprehensive sewage tank, then sequentially passes through the secondary filter tank and the regulating tank and then flows into the primary sedimentation tank; oxidation and coagulation flocculants are mixed in the primary sedimentation tank and the sludge concentration tank, and sludge generated when sewage flows through the primary sedimentation tank and the secondary sedimentation tank is sequentially conveyed to the sludge concentration tank, the sludge filter pressing assembly and the sludge treatment device. According to the utility model, sustainable circulating purification and utilization of sewage and recycling and proper disposal of sludge can be realized.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater purification and treatment technology, and specifically relates to a wastewater purification and treatment device. Background Technology

[0002] Municipal wastewater mainly includes industrial and domestic sewage. Existing wastewater treatment plants have a relatively mature treatment process for this wastewater, which typically includes steps such as collection, pretreatment, primary sedimentation treatment, biological treatment, secondary sedimentation deep treatment, sludge treatment, disinfection discharge or recycling treatment.

[0003] However, the above-mentioned wastewater treatment processes still have limitations in terms of the sludge and wastewater generated during the wastewater treatment process, resulting in a low resource recycling rate. The lack of broader reuse pathways restricts the economic efficiency and sustainability of wastewater treatment technologies. At the same time, there is also the problem of secondary pollution caused by improper sludge treatment. Utility Model Content

[0004] In view of the shortcomings of the prior art, the present invention provides a sewage purification and treatment device that can properly treat the purified sewage and sludge, which is conducive to improving the resource recycling rate and expanding the resource reuse pathways, and realizes sustainable sewage recycling, purification and utilization.

[0005] The present invention discloses a wastewater purification treatment device, which includes an oil separator, a primary sedimentation tank, a pH adjustment tank, an anaerobic tank, an aerobic tank, a secondary sedimentation tank, an MBR membrane tank, and a purification device through which wastewater flows in sequence. It also includes an underground integrated wastewater tank, a secondary filtration tank, and an equalization tank connected in sequence, and further includes a sludge thickening tank, a sludge filter press assembly, and a sludge treatment device.

[0006] The wastewater can be reused after being purified by the purification device. After being reused, the wastewater flows into the underground integrated wastewater tank, and then flows into the primary sedimentation tank after passing through the secondary filtration tank and the equalization tank.

[0007] Both the primary sedimentation tank and the sludge thickening tank contain oxidizing and coagulating flocculants. The sludge generated from the wastewater flowing through the primary sedimentation tank and the secondary sedimentation tank is sequentially transported to the sludge thickening tank, the sludge filter press assembly, and the sludge treatment device.

[0008] Furthermore, the sludge filter press assembly includes: a filter press, filter cloth, filter plates, a pneumatic diaphragm pump, a sludge inlet valve, a sludge inlet pipe, an air inlet valve, an air inlet pipe, a water outlet tap located on the side of the filter plates, a filtrate collection pipe, and a filtrate collection tank; the sludge thickening tank is connected to the sludge inlet pipe; the sludge inlet pipe is connected to the filter press; the sludge inlet pipe is sequentially equipped with a pneumatic diaphragm pump for pumping sludge into the filter press and a sludge inlet valve for controlling the flow of the pipe along the material conveying direction; the filter press is also connected to an air inlet pipe, which is connected to a compressed air source and is equipped with an air inlet valve for controlling the supply of compressed air; the filtrate outlet of the filter press is connected to the filtrate collection tank through a filtrate collection pipe, and a water outlet tap for observing the filtrate flow is installed on the filtrate collection pipe.

[0009] Furthermore, the sludge filter press assembly also includes a reflux valve located in the sludge inlet pipe and a pressure gauge located between the air inlet pipe and the filter press.

[0010] Furthermore, the sludge treatment device is used to utilize the sludge cake, which includes converting the sludge cake into agricultural fertilizer or building materials, incinerating it, or landfilling it.

[0011] Furthermore, the purification device is used to perform advanced treatment and disinfection of the wastewater. The advanced treatment includes coagulation and sedimentation, filtration, activated carbon adsorption, and ozone oxidation. The disinfection treatment includes disinfection using chlorine or ultraviolet light.

[0012] Furthermore, the oxidizing and coagulating flocculant contains added acid or alkali and water purification agent.

[0013] Furthermore, the anaerobic tank contains added acid or alkali and water purification agents.

[0014] The beneficial effects of this utility model are:

[0015] By subjecting wastewater to a series of purification treatments and then recycling and reusing the wastewater or sludge, the resource recycling rate is effectively improved and the resource reuse pathways are expanded. At the same time, it enables the sustainable recycling and purification of wastewater, as well as the recycling and proper disposal of sludge, which helps to avoid resource waste and environmental pollution. Attached Figure Description

[0016] Figure 1 This is a structural block diagram of a wastewater purification and treatment device according to the present invention;

[0017] Figure 2 This is a schematic diagram of the sludge filter press assembly in a wastewater purification treatment device according to the present invention.

[0018] In the diagram: 1. Oil separator; 2. Primary sedimentation tank; 3. pH adjustment tank; 4. Anaerobic tank; 5. Aerobic tank; 6. Secondary sedimentation tank; 7. MBR membrane tank; 8. Purification device; 9. Underground integrated sewage tank; 10. Secondary filtration tank; 11. Equalization tank; 12. Sludge thickening tank; 13. Sludge filter press assembly; 14. Sludge treatment device; 15. Oxidizing and coagulating flocculant; 16. Filter press; 17. Filter cloth; 18. Filter plate; 19. Pneumatic diaphragm pump; 20. Sludge inlet valve; 21. Sludge inlet pipe; 22. Air inlet valve; 23. Air inlet pipe; 24. Return valve; 25. Pressure gauge; 26. Locking nut. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] like Figure 1 As shown, a wastewater purification treatment device of this utility model includes an oil separator 1, a primary sedimentation tank 2, a pH adjustment tank 3, an anaerobic tank 4, an aerobic tank 5, a secondary sedimentation tank 6, an MBR membrane tank 7, and a purification device 8 through which wastewater flows in sequence. It also includes an underground integrated wastewater tank 9, a secondary filtration tank 10, and an equalization tank 11 connected in sequence. Furthermore, it includes a sludge thickening tank 12, a sludge filter press assembly 13, and a sludge treatment device 14.

[0023] After being purified by the purification device 8, the wastewater can be reused. After being reused, the wastewater flows into the underground integrated wastewater tank 9, and then flows into the primary sedimentation tank 2 after passing through the secondary filtration tank 10 and the equalization tank 11.

[0024] Both the primary sedimentation tank 2 and the sludge thickening tank 12 contain oxidizing and coagulant flocculants 15. The sludge generated by the sewage flowing through the primary sedimentation tank 2 and the secondary sedimentation tank 6 is sequentially transported to the sludge thickening tank 12, the sludge filter press assembly 13, and the sludge treatment device 14.

[0025] Specifically, the wastewater purification and treatment device of this utility model is mainly used to treat the wastewater generated by production and living in industrial parks. After the water used for production and living becomes wastewater, it first flows from the septic tank or oil separator 1 into the primary sedimentation tank 2, and then flows sequentially through the pH adjustment tank 3, anaerobic tank 4, aerobic tank 5, secondary sedimentation tank 6, MBR membrane tank 7, and purification device 8.

[0026] Among them, the oil separator 1 is mainly used to remove grease and suspended solids from oily wastewater; the primary sedimentation tank 2 is mainly used to remove settleable solids, floating solids, and large particles from the wastewater by gravity; the pH adjustment tank 3 is mainly used to adjust the acidity (pH value) of the wastewater to prevent the pH value from deviating from the normal range and avoid adverse effects on subsequent treatment processes and equipment; the anaerobic tank 4 is used to initially degrade organic matter and produce biogas, while providing more easily treated wastewater for the aerobic tank 5; the aerobic tank 5 is used to further degrade organic matter, remove nutrients such as nitrogen and phosphorus, and kill bacteria and viruses; the secondary sedimentation tank 6 is mainly used to remove suspended solids from the wastewater. Colloidal and partially dissolved substances settle to form sludge at the bottom of the tank through gravity sedimentation. The MBR membrane tank 7 combines biological treatment and membrane separation technology, using microporous membranes to trap suspended solids, colloidal substances, microorganisms, and most dissolved organic matter in the wastewater within the reactor, thereby ensuring the quality of the effluent. The purification device 8 is used for advanced treatment and disinfection of wastewater. Advanced treatment includes coagulation sedimentation, filtration, activated carbon adsorption, and ozone oxidation, which are beneficial for further removing pollutants from the water. Disinfection treatment includes the use of chlorine or ultraviolet light to kill bacteria, viruses, and other microorganisms in the water, ensuring the safety of the effluent.

[0027] By combining the above-mentioned multiple wastewater purification processes, pollutants such as color, suspended solids, organic matter, inorganic matter, and microorganisms in the wastewater can be removed more effectively, resulting in a significant improvement in effluent quality that meets discharge standards or reuse requirements. Furthermore, adding acid or alkali, or water purification agents to anaerobic tank 4 can also adjust the pH value and improve the effluent quality.

[0028] After being purified by the purification device 8, the wastewater can be converted into relatively clean water for reuse. Reuse includes watering flowers, cleaning the ground, flushing toilets, etc. Through these reuse activities, the wastewater will be collected in the underground integrated wastewater tank 9, and then it will pass through the secondary filtration tank 10 and the pH value and water quality adjustment tank 11 in sequence. Finally, it will flow back to the primary sedimentation tank 2, thereby realizing the reuse and sustainable circulation purification of wastewater, which is conducive to improving the resource recycling rate.

[0029] When wastewater flows through the primary sedimentation tank 2 and the secondary sedimentation tank 6, sludge is generated by the sedimentation in both tanks. The sludge is then transported to the sludge thickening tank 12. The sludge thickening tank 12 is mainly based on the principle of gravity settling to reduce the water content and volume of the sludge, thereby increasing the concentration of the sludge and preparing it for subsequent sludge treatment processes.

[0030] The primary sedimentation tank 2 and the sludge thickening tank 12 contain an oxidizing and coagulating flocculant 15. The oxidation tank converts organic and inorganic matter into harmless substances through oxidation, thus purifying the water. The coagulation and flocculation tank uses flocculants to react chemically or physically with suspended solids and colloidal substances in the water, causing them to aggregate and form flocs, thereby removing suspended solids. Therefore, by mixing the oxidizing and coagulating flocculant 15 into the primary sedimentation tank 2 and the sludge thickening tank 12, the load on subsequent filtration or sedimentation processes can be reduced in advance, thereby lowering sludge treatment costs.

[0031] In addition, the addition of acid or alkali and water purification agent to the oxidizing, coagulating and flocculant 15 is beneficial to adjusting the pH value and improving the quality of the effluent, thus ensuring the stable operation of the sludge treatment process.

[0032] like Figure 2 As shown, the sludge filter press assembly 13 includes: a filter press 16, a filter cloth 17, a filter plate 18, a pneumatic diaphragm pump 19, a sludge inlet valve 20, a sludge inlet pipe 21, an air inlet valve 22, an air inlet pipe 23, a water outlet faucet located on the side of the filter plate 18, a filtrate collection pipe, and a filtrate collection tank. The sludge inlet pipe 21 is connected to the sludge thickening tank 12.

[0033] After the sludge is transported to the sludge filter press assembly 13, the sludge filter press assembly filters the sludge to form a sludge cake. The specific steps include: straightening the filter cloth 17 and pressing the filter plate 18, starting the filter press 16, opening the sludge inlet valve 20, and pumping the sludge from the sludge thickening tank 12 into the filter press 16 through the sludge inlet pipe 21 by the pneumatic diaphragm pump 19. Then, the air inlet valve 22 is opened to allow compressed air to enter the filter press 16 through the air inlet pipe 23. Under the action of the compressed air, the filtrate produced by the filter press 16 filters the sludge through the gaps in the filter cloth 17, and then enters the filtrate collection tank through the water outlet and the filtrate collection pipe. When the water outlet no longer flows out of the filtrate, it indicates that the filtration is complete. At this time, the sludge inlet valve 20 is closed to stop pumping sludge, the filter plate 18 is loosened, and the sludge cake formed by the filtration is removed.

[0034] Specifically, the sludge filter press assembly 13 also includes a reflux valve 24 installed in the sludge inlet pipe 21 and a pressure gauge 25 installed between the air inlet pipe 23 and the filter press 16. By setting the reflux valve 24, the sludge can be prevented from flowing back under the action of compressed air, thereby ensuring that the feeding and air intake work are carried out simultaneously, which is conducive to improving the filter press efficiency. By setting the pressure gauge 25 between the air inlet pipe 23 and the filter press 16, it is convenient to observe and control the pressure value generated by the compressed air, so as to make it easy to accurately adjust the filter press effect according to the current pressure value.

[0035] The sludge filter press assembly 13 includes a locking nut 26, which can be tightened to press the filter plate 18. Loosening the locking nut 26 will loosen the filter plate 18.

[0036] The water faucet, filtrate collection pipe, and filtrate collection tank are connected. The filtrate collection pipe can be positioned below the water faucet outlet, allowing the faucet to connect directly to the inlet of the filtrate collection pipe, while the outlet of the filtrate collection pipe connects directly to the filtrate collection tank. By collecting and purifying the filtrate produced during the filtration process, it can be converted into clean water for recycling, further improving resource recovery rates.

[0037] After being filtered by the sludge filter press assembly 13, the sludge forms a sludge cake and is transported to the sludge treatment device 14. The sludge treatment device 14 is used to utilize the sludge cake. The utilization treatment includes converting the sludge cake into agricultural fertilizer or building materials, incinerating it, or landfilling it. Utilizing the sludge cake through the sludge treatment device 14 helps to further improve the resource recycling rate and expand the resource reuse pathways.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A wastewater purification and treatment device, characterized in that, The system includes an oil separator (1), a primary sedimentation tank (2), a pH adjustment tank (3), an anaerobic tank (4), an aerobic tank (5), a secondary sedimentation tank (6), an MBR membrane tank (7), and a purification device (8) through which the wastewater flows in sequence. It also includes an underground integrated wastewater tank (9), a secondary filtration tank (10), and an equalization tank (11) connected in sequence. Furthermore, it includes a sludge thickening tank (12), a sludge filter press assembly (13), and a sludge treatment device (14). The wastewater can be reused after being purified by the purification device (8). After being reused, the wastewater flows into the underground integrated wastewater tank (9), and then flows into the primary sedimentation tank (2) after passing through the secondary filtration tank (10) and the regulating tank (11). The primary sedimentation tank (2) and the sludge thickening tank (12) are both mixed with oxidizing and coagulating flocculants (15). The sludge generated by the sewage flowing through the primary sedimentation tank (2) and the secondary sedimentation tank (6) is sequentially transported to the sludge thickening tank (12), the sludge filter press assembly (13), and the sludge treatment device (14). The sludge filter press assembly (13) filters the sludge to form a sludge cake.

2. The wastewater purification and treatment device according to claim 1, characterized in that, The sludge filter press assembly (13) includes: a filter press (16), filter cloth (17), filter plate (18), pneumatic diaphragm pump (19), sludge inlet valve (20), sludge inlet pipe (21), air inlet valve (22), air inlet pipe (23), a water outlet faucet located on the side of the filter plate (18), a filtrate collection pipe, and a filtrate collection tank. The sludge thickening tank (12) is connected to the sludge inlet pipe (21). The sludge inlet pipe (21) is connected to the filter press (16). The sludge inlet pipe (21) is connected to the material conveying direction. A pneumatic diaphragm pump (19) for pumping sludge into the filter press (16) and a sludge inlet valve (20) for controlling the opening and closing of the pipeline are arranged in sequence; the filter press (16) is also connected to an air inlet pipe (23), which is connected to a compressed air source and is equipped with an air inlet valve (22) for controlling the intake of compressed air; the filtrate outlet of the filter press (16) is connected to a filtrate collection tank through a filtrate collection pipe, and a faucet for observing the outflow of filtrate is provided on the filtrate collection pipe.

3. The wastewater purification and treatment device according to claim 2, characterized in that, The sludge filter press assembly (13) also includes a reflux valve (24) located in the sludge inlet pipe (21) and a pressure gauge (25) located between the air inlet pipe (23) and the filter press (16).

4. The wastewater purification and treatment device according to claim 1, characterized in that, The sludge treatment device (14) is used to utilize the sludge cake, which includes converting the sludge cake into agricultural fertilizer or building materials, incinerating it, or landfilling it.

5. The wastewater purification and treatment device according to claim 1, characterized in that, The purification device (8) is used to perform advanced treatment and disinfection of the wastewater. The advanced treatment includes coagulation sedimentation, filtration, activated carbon adsorption, and ozone oxidation. The disinfection includes disinfection using chlorine or ultraviolet light.

6. The wastewater purification and treatment device according to claim 1, characterized in that, The oxidizing, coagulating flocculant (15) contains added acid or alkali and water purification agent.

7. The wastewater purification and treatment device according to claim 1, characterized in that, The anaerobic tank (4) contains acid or alkali and water purification agent.

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