Integrated sewage treatment equipment

Abstract

The utility model provides integrated sewage treatment equipment which comprises a plurality of aeration units mounted in an aerobic tank, each aeration unit comprises an upper plate, a lower plate, an aerator and a membrane component group, the lower plate is fixed at the bottom of the aerobic tank, the upper plate is arranged above the lower plate, and the aerator and the membrane component group are both mounted between the upper plate and the lower plate; the upper plate and the lower plate are respectively provided with an inner cavity; the aerator comprises a spiral pipe body, and a plurality of aeration hole groups are formed in the spiral pipe body; the aeration hole group comprises a plurality of aeration holes which are uniformly distributed along the circumference of the section of the spiral pipe body; the top end of the spiral pipe body is connected with the upper plate, the bottom end of the spiral pipe body is connected with the lower plate, and an inner cavity of the upper plate, an inner cavity of the spiral pipe body and an inner cavity of the lower plate are sequentially connected. According to the integrated sewage treatment equipment provided by the utility model, the oxygen dissolving effect of the whole aerobic tank is balanced, the utilization rate and the activity of a biological membrane are improved, and the nitrogen and phosphorus removal effect is improved.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, specifically, it relates to an integrated wastewater treatment device. Background Technology

[0002] Integrated wastewater treatment equipment provides essential oxygen to microorganisms through aerators in an aerobic tank, thereby degrading pollutants in wastewater. Currently, aerators are typically installed at the bottom of the tank for oxygenation, but this method has the following drawbacks: 1. The gas flow direction is vertically upward, resulting in lower dissolved oxygen levels between adjacent aerators compared to directly above them. 2. The aerator pore size is approximately 80–120 μm, making it difficult to improve dissolved oxygen levels. 3. Membrane modules are positioned above the aerators, leading to lower dissolved oxygen levels and lower utilization rates. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide an integrated sewage treatment equipment that balances the dissolved oxygen effect of the entire aerobic tank, improves the utilization rate and activity of the biofilm, and enhances the nitrogen and phosphorus removal effect.

[0004] To solve the above-mentioned technical problems, this utility model provides an integrated sewage treatment device, including several aeration units installed in an aerobic tank. Each aeration unit includes an upper plate, a lower plate, an aerator, and a membrane module assembly. The lower plate is fixed to the bottom of the aerobic tank, and the upper plate is positioned above the lower plate. The aerator and the membrane module assembly are both installed between the upper and lower plates. Both the upper and lower plates have an inner cavity. The aerator includes a spiral tube with several sets of aeration holes. Each aeration hole assembly includes several aeration holes, which are evenly distributed circumferentially along the cross-section of the spiral tube. The top end of the spiral tube is connected to the upper plate, and the bottom end of the spiral tube is connected to the lower plate. The inner cavities of the upper plate, the spiral tube, and the lower plate are sequentially connected.

[0005] Furthermore, the membrane module assembly includes a plurality of first membrane modules, which are installed around the periphery of the helical tube body.

[0006] Furthermore, the membrane module assembly also includes a second membrane module, which is mounted on the central axis of the helical tube.

[0007] Furthermore, the bottom surface of the upper plate is provided with a plurality of first aeration holes.

[0008] Furthermore, the pore size of the first aeration hole is 80–120 μm.

[0009] Furthermore, the top surface of the lower plate is provided with a plurality of second aeration holes.

[0010] Furthermore, the pore size of the second aeration hole is 80–120 μm.

[0011] Furthermore, the upper plate is located 500mm below the water surface of the aerobic pool.

[0012] Compared with the prior art, the technical solution of this utility model has the following beneficial effects:

[0013] The integrated wastewater treatment equipment provided in this embodiment of the invention includes several aeration units in the aerobic tank. Each aeration unit uses a spiral aerator, and a membrane module is installed next to the aerator. Compressed air is ejected from the aerator and sprayed in all directions at different heights, directions, and tilt angles, creating a multi-layered aeration process where the air bubbles cut and collide with each other, making them finer and smaller, thus enhancing the dissolved oxygen effect. Furthermore, oxygen acts directly on the biofilm at different heights and directions, improving the utilization efficiency and activity of the biofilm and effectively enhancing its nitrogen and phosphorus removal efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the integrated sewage treatment equipment according to an embodiment of the present utility model;

[0015] Figure 2 yes Figure 1 Schematic diagram of the structure of the intermediate aeration unit;

[0016] Figure 3 This is a cross-sectional view of the spiral tube of the aerator.

[0017] The diagram includes: aerator 1, upper aeration hole 11, lower aeration hole 12, external aeration hole 13, internal aeration hole 14, second membrane module 2, first membrane module 3, upper plate 4, first aeration hole 41, lower plate 5, second aeration hole 51, upper ring 6, and lower ring 7. Detailed Implementation

[0018] The technical solution of this utility model will now be described in detail with reference to the accompanying drawings.

[0019] This utility model embodiment provides an integrated sewage treatment device, such as... Figure 1 As shown, this includes several aeration units installed in the aerobic tank. Figure 2As shown, the aeration unit includes an upper plate 4, a lower plate 5, an aerator 1, and a membrane module assembly. The lower plate 5 is fixed to the bottom of the aerobic tank, and the upper plate 4 is positioned above the lower plate 5. Preferably, the upper plate 4 is located 500 mm below the water surface of the aerobic tank. Both the upper plate 4 and the lower plate 5 have an inner cavity. The aerator 1 includes a spiral tube with several sets of aeration holes. Each aeration hole set includes several aeration holes, which are evenly distributed circumferentially along the cross-section (longitudinal section) of the spiral tube. The diameter of the aeration holes is 80–120 μm, and the centerline of all aeration holes is located on the diameter of the spiral tube cross-section. The top end of the spiral tube is connected to the upper plate 4, and the bottom end is connected to the lower plate 5. The inner cavities of the upper plate, the spiral tube, and the lower plate are sequentially connected. The inner cavities of the lower plates 5 of adjacent aeration units are connected through air supply pipes, and the inner cavity of the lower plate 5 of one aeration unit is connected to the air inlet pipe. In use, compressed air is introduced into the air inlet pipe. The compressed air enters the lower plate cavity of all aeration units, and then enters the aerator 1 and the upper plate cavity. The air entering the aerator 1 is sprayed outward through the aeration holes for aeration. The membrane module assembly is installed between the upper plate 4 and the lower plate 5 via the upper ring 6 and the lower ring 7.

[0020] like Figure 3 As shown, the aeration holes located within a 45° range to the left and right of the vertical axis of the spiral tube section and pointing upwards are called upper aeration holes 11; the aeration holes located within a 45° range to the left and right of the vertical axis of the spiral tube section and pointing downwards are called lower aeration holes 12; the aeration holes located within a 45° range above and below the horizontal axis of the spiral tube section and facing away from the central axis of the spiral tube are called external aeration holes 13; and the aeration holes located within a 45° range above and below the horizontal axis of the spiral tube section and facing towards the central axis of the spiral tube are called internal aeration holes 14. On each spiral tube section, the upper aeration holes 11 aerate and oxygenate the water within an upward and 45° range to the left and right, forming a third air-water mixture. The lower aeration holes 12 aerate and oxygenate the water within a downward and 45° range to the left and right, forming a fourth air-water mixture. The external aeration holes 13 aerate and oxygenate the water within a 45° range away from the spiral tube axis, forming a fifth air-water mixture. The internal aeration holes 14, oriented towards the axis of the spiral tube and within a 45° range above and below, aerate the water, forming a sixth air-water mixture. The aerator provides multi-level and multi-directional aeration and oxygenation to the water at different heights and orientations, effectively balancing the oxygen distribution.

[0021] The integrated wastewater treatment equipment described in the above embodiment includes several aeration units in the aerobic tank. Each aeration unit uses a spiral aerator, and a membrane module is installed next to the aerator. Compressed air is ejected from the aerator and sprayed in all directions at different heights, directions, and angles, creating a multi-layered aeration process where the air bubbles cut and collide with each other, making them finer and smaller. This three-dimensional aeration effectively enhances the dissolved oxygen effect. Furthermore, the oxygen acts directly on the biofilm at different heights and directions, improving the biofilm's utilization efficiency and activity, and effectively enhancing its nitrogen and phosphorus removal efficiency.

[0022] Preferably, the bottom surface of the upper plate 4 is provided with a plurality of first aeration holes 41. The pore size of the first aeration holes 41 is 80-120 μm. Compressed air entering the inner cavity of the upper plate 4 is sprayed downward through the first aeration holes 41, forming a first air-water mixture with the water below the upper plate. The downward flowing first air-water mixture collides and mixes with the air-water mixtures formed by the aeration holes at different heights and positions of the aerator below, improving the oxygen transfer efficiency, oxygenating the membrane module, and further enhancing the activity of the biofilm.

[0023] Preferably, the top surface of the lower plate 5 is provided with a plurality of second aeration holes 51. The pore size of the second aeration holes 51 is 80-120 μm. Compressed air entering the inner cavity of the lower plate 5 is sprayed upward through the second aeration holes 51, forming a second air-water mixture with the water above the lower plate. The upward-flowing second air-water mixture collides and mixes with the air-water mixtures formed by the aeration holes at different heights and positions of the upper aerator, improving oxygen transfer efficiency, oxygenating the membrane module, and further enhancing the activity of the biofilm. When the downward-flowing first air-water mixture and the upward-flowing second air-water mixture meet, they collide and mix again, further improving oxygen transfer efficiency, oxygenating the membrane module, and effectively enhancing the activity of the biofilm.

[0024] Preferably, the membrane module assembly includes a plurality of first membrane modules 3, which are installed around the periphery of the spiral tube. The membrane module assembly also includes a second membrane module 2, which is installed on the central axis of the spiral tube. This significantly increases the length of the membrane module and enhances its oxygenation effect, thereby improving the activity of the biofilm and effectively increasing the nitrogen and phosphorus removal efficiency of the membrane module.

[0025] For the second membrane module 2, since it is located on the central axis of the spiral tube, it is oxygenated by the full-height, multi-directional air-water mixture, achieving dissolved oxygen throughout the space and effectively improving dissolved oxygen efficiency and biofilm activity. On one hand, the upper aeration holes 11 form a third air-water mixture within an upward and left-right 45° range at different heights and circumferential directions; the lower aeration holes 12 form a fourth air-water mixture within a downward and left-right 45° range at different heights and circumferential directions; and the inner aeration holes 14 form a sixth air-water mixture within an inward and vertical 45° range at different heights and circumferential directions. These three types of air-water mixtures directly transfer oxygen at different heights and directions. On the other hand, the third, fourth, and sixth air-water mixtures cut and merge with each other to form an air-water mixture with a higher oxygen content, enhancing oxygen transfer and effectively improving biofilm activity.

[0026] As for the first membrane module 3, since the first membrane module is evenly distributed on the outer periphery of the spiral tube, the first membrane module is subjected to the balanced oxygenation effect of the air-water mixture at full height and in multiple directions, thus achieving the dissolved oxygen effect of the entire space and effectively improving the dissolved oxygen efficiency and the activity of the biofilm. The first membrane module is oxygenated by six different types of air-water mixtures, greatly enhancing the activity of the biofilm: First, in a single aeration unit, the first membrane module is oxygenated from multiple directions and at different heights by the downward-facing first air-water mixture formed by the first aeration hole 41, the upward-facing second air-water mixture formed by the second aeration hole 51, the upward-facing and left-right 45° range of the third air-water mixture formed by the upper aeration hole 11, the downward-facing and left-right 45° range of the fourth air-water mixture formed by the lower aeration hole 12, the outward-facing and vertical 45° range of the fifth air-water mixture formed by the outer aeration hole 13, and the sixth air-water mixture formed by the inner aeration hole 14 (after leaving the spiral tube); Second, the air-water mixture with higher oxygen content formed by the mutual cutting and merging of the first, second, third, fourth, fifth, and sixth air-water mixtures further facilitates oxygen transfer; Finally, the third, fourth, fifth, and sixth air-water mixtures formed by the aerators of adjacent aeration units facilitate oxygenation.

[0027] The working process of the integrated wastewater treatment equipment described in the above embodiments is as follows:

[0028] Start the blower, and compressed air enters the cavities of the lower plate 5, aerator 1 and upper plate 4 of each aeration unit through the air inlet pipe.

[0029] Compressed air is injected downwards through the first aeration hole 41 of the upper plate 4, forming a first air-water mixture with the water below. It is injected upwards through the second aeration hole 51 of the lower plate 5, forming a second air-water mixture with the water above. The upper aeration holes 11 in the aerator 1 aerate the water upwards and within a 45° range to the left and right, forming a third air-water mixture. The lower aeration holes 12 aerate the water downwards and within a 45° range to the left and right, forming a fourth air-water mixture. The outer aeration holes 13 aerate the water away from the spiral axis and within a 45° range upwards and downwards, forming a fifth air-water mixture. The inner aeration holes 14 aerate the water within a 45° range upwards and downwards, forming a sixth air-water mixture. The aerator aerates the water at different heights and in different directions, effectively balancing oxygen distribution and biofilm activity.

[0030] Between the outer ring of the second membrane module 2 and the inner ring of the first membrane module 3, the downward-flowing first air-water mixture collides and mixes with the air-water mixtures formed by aeration holes at different heights and orientations of the aerator below. The upward-flowing second air-water mixture collides and mixes with the air-water mixtures formed by aeration holes at different heights and orientations of the aerator above. When the downward-flowing first air-water mixture and the upward-flowing second air-water mixture meet, they collide and mix again, repeatedly improving oxygen transfer efficiency and further enhancing the activity of the biofilm.

[0031] The second membrane module 2 is oxygenated by the third, fourth, and sixth carbonated water mixtures at full height and from multiple directions, achieving dissolved oxygen throughout the space and effectively improving dissolved oxygenation efficiency and biofilm activity. Simultaneously, the third, fourth, and sixth carbonated water mixtures interpenetrate and blend to form carbonated water mixtures with even higher oxygen content, further enhancing biofilm activity. The first membrane module 3 is subjected to the combined and balanced oxygenation of the first, second, third, fourth, fifth, and sixth carbonated water mixtures in different states, as well as the oxygenation process of the third, fourth, fifth, and sixth carbonated water mixtures formed by adjacent aerators, significantly improving biofilm activity.

[0032] When backwashing the membrane module assembly, compressed air is sprayed from the entire height of the aerator through the upper aeration holes, lower aeration holes, external aeration holes, internal aeration holes, as well as the first aeration hole on the upper plate and the second aeration hole on the lower plate, in different directions. This multi-directional and multi-height three-dimensional cleaning of the membrane module assembly effectively improves the cleaning effect.

[0033] 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 specific embodiments described above. The specific embodiments and descriptions in the specification are merely for further illustrating 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 this utility model as claimed. The scope of protection of this utility model is defined by the claims and their equivalents.

Claims

1. An integrated sewage treatment equipment, characterized in that, The system includes several aeration units installed in an aerobic tank. Each aeration unit includes an upper plate (4), a lower plate (5), an aerator (1), and a membrane module assembly. The lower plate (5) is fixed to the bottom of the aerobic tank, and the upper plate (4) is positioned above the lower plate (5). The aerator and the membrane module assembly are installed between the upper plate (4) and the lower plate (5). Both the upper plate (4) and the lower plate (5) have an inner cavity. The aerator (1) includes a spiral tube body with several sets of aeration holes. Each aeration hole set includes several aeration holes, which are evenly distributed circumferentially along the cross-section of the spiral tube body. The top end of the spiral tube body is connected to the upper plate (4), and the bottom end of the spiral tube body is connected to the lower plate (5). The inner cavities of the upper plate, the spiral tube body, and the lower plate are connected sequentially.

2. The integrated sewage treatment equipment according to claim 1, characterized in that, The membrane module assembly includes several first membrane modules, which are installed around the periphery of the helical tube.

3. The integrated sewage treatment equipment according to claim 1, characterized in that, The membrane module assembly also includes a second membrane module, which is mounted on the central axis of the helical tube.

4. The integrated sewage treatment equipment according to claim 1, characterized in that, The bottom surface of the upper plate (4) is provided with a number of first aeration holes (41).

5. The integrated sewage treatment equipment according to claim 4, characterized in that, The diameter of the first aeration hole (41) is 80-120 μm.

6. The integrated sewage treatment equipment according to claim 1, characterized in that, The top surface of the lower plate (5) is provided with several second aeration holes (51).

7. The integrated sewage treatment equipment according to claim 6, characterized in that, The diameter of the second aeration hole (51) is 80-120 μm.

8. The integrated sewage treatment equipment according to claim 1, characterized in that, The upper plate (4) is located 500mm below the water surface of the aerobic pool.

Images