Precise aeration device applied to aerobic tank

Abstract

The utility model discloses an accurate aeration device applied to an aerobic tank, which relates to the technical field of sewage treatment and comprises a tank body, a plurality of aeration modules, a plurality of ORP (oxidation-reduction potential) testers and a control module, sewage to be treated circulates in the tank body, and a plurality of non-overlapped treatment areas are divided in the tank body; an aeration module is arranged in each treatment area, and the plurality of aeration modules are jointly connected with a fan device; each treatment area is provided with an ORP tester; the control module is electrically connected with all the ORP measuring instruments, and the control module is also electrically connected with the fan device. According to the precise aeration device applied to the aerobic tank, disclosed by the utility model, the content of dissolved oxygen in the tank can be more finely controlled, the oxygen utilization rate is improved, the aeration energy consumption is reduced, and the aeration efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a precise aeration device applied to an aerobic pool. Background Art

[0002] As the main power-consuming unit of sewage treatment facilities, the control level of the aeration system has a significant impact on the overall energy consumption of sewage treatment facilities and the quality of effluent. In some sewage scenarios, due to the fluctuation of influent water quality and water volume, the traditional aeration volume control scheme has serious lag and cannot achieve accurate aeration, resulting in unsatisfactory aeration effect.

[0003] In addition, the traditional aeration scheme is to lay an aeration system on the bottom of the pool, such as disc aerators and microporous aerators. These aeration devices are suitable for use in domestic sewage or other low-concentration sewage. If encountering domestic sewage or industrial wastewater with high pollutant concentrations, the above-mentioned aeration devices are prone to blockage and damage, and their service life is short. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a precise aeration device applied to an aerobic pool, which can more finely control the dissolved oxygen content in the pool, improve oxygen utilization rate to reduce aeration energy consumption and improve aeration efficiency.

[0005] According to an embodiment of the utility model, a precise aeration device applied to an aerobic pool includes: a pool body, wherein sewage to be treated flows through the pool body, and the pool body is divided into a plurality of non-overlapping treatment areas;

[0006] A plurality of aeration modules, each of the treatment areas is provided with the aeration module, and the plurality of aeration modules are commonly connected to a fan device;

[0007] A plurality of ORP meters, each of the treatment zones being provided with the ORP meter;

[0008] A control module is electrically connected to all of the ORP measuring instruments, and the control module is also electrically connected to the fan device.

[0009] According to the precise aeration device applied to the aerobic pool according to the embodiment of the utility model, there are at least the following beneficial effects: the pool body is divided into multiple non-overlapping treatment areas, and the division of the pool body into multiple treatment areas can achieve refined management and control. Compared with obtaining the average data of the entire pool body, data collection for a single area of ​​the pool body is closer to the actual situation of the sewage in the area. Combining the ORP meter with the aeration module can finely control the aeration level in each treatment area by area, thereby improving the sewage treatment effect.

[0010] According to some embodiments of the present invention, the aeration module is connected to a lifting device, and the lifting device is used to increase the height of the aeration module.

[0011] According to some embodiments of the utility model, the aeration module includes a plurality of aeration branch pipes arranged in parallel, one ends of the plurality of aeration branch pipes are interconnected, and the connected ends are connected to the fan device, and the aeration branch pipes are provided with a plurality of air outlets, and the plurality of air outlets are arranged and distributed along the axial direction of the aeration branch pipes.

[0012] According to some embodiments of the utility model, the air outlets are all equipped with aeration disks.

[0013] According to some embodiments of the utility model, each of the aeration branch pipes is provided with a rotating mechanism, and the rotating mechanism is used to drive the aeration branch pipe to rotate around the circumference of the aeration branch pipe.

[0014] According to some embodiments of the utility model, the rotating mechanism includes a driving member, a rack and multiple gears, each of the aeration branch pipes is equipped with the gear, the gear is coaxial with the aeration branch pipe, the rack is meshed with all the gears, and the driving member is connected to the rack to drive the rack to move linearly.

[0015] According to some embodiments of the present invention, the circumference of each of the gears is consistent, and the displacement of the rack is greater than or equal to the circumference of the gear.

[0016] According to some embodiments of the present invention, each of the aeration modules is provided with a separate valve, and the valve is used to control the on-off connection between the aeration module and the fan device.

[0017] According to some embodiments of the utility model, each aeration module is also provided with an air flow meter, and the air flow meter is connected in series with the valve.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0020] Figure 1 This is a schematic structural diagram of a precise aeration device applied to an aerobic pool according to an embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the aeration module of an embodiment of the utility model;

[0022] Figure 3This is a schematic diagram of the structure of the aeration branch pipe and the aeration plate of an embodiment of the utility model;

[0023] Figure 4 It is a structural schematic diagram of the rotating mechanism of an embodiment of the utility model.

[0024] Figure Number:

[0025] The tank body 100 , the aeration module 200 , the aeration branch pipe 210 , the aeration plate 220 , the rotating mechanism 230 , the rack 232 , the gear 233 , the valve 240 , the air flow meter 250 , the fan device 300 , the ORP meter 400 , and the control module 500 . DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] In the description of the present invention, it should be understood that the descriptions involving orientation, such as the orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In the description of the present utility model, "a plurality" means more than two. If there is a description of "first" or "second", it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0029] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0030] As the main power-consuming unit of sewage treatment facilities, the control level of the aeration system has a significant impact on the overall energy consumption of sewage treatment facilities and the quality of effluent. In some sewage scenarios, due to the fluctuation of influent water quality and water volume, the traditional aeration volume control scheme has serious lag and cannot achieve accurate aeration, resulting in unsatisfactory aeration effect.

[0031] The traditional aeration scheme is to lay an aeration system at the bottom of the pool, such as disc aerators and microporous aerators. These aeration devices are suitable for use in domestic sewage or other low-concentration sewage. If encountering domestic sewage or industrial wastewater with high pollutant concentrations, the above-mentioned aeration devices are prone to blockage and damage, and their service life is short. When the aeration device is blocked or damaged, it needs to be repaired in time. However, before the above-mentioned aeration device is repaired, it is necessary to completely stop the sewage treatment work and empty the sewage in the pool body before entering the pool body for maintenance work. The maintenance cycle is long and the inspection is extremely inconvenient.

[0032] Reference Figure 1 As shown, a precise aeration device for an aerobic pool according to an embodiment of the present invention includes a pool body 100 , a plurality of aeration modules 200 , a plurality of ORP measuring instruments 400 and a control module 500 .

[0033] The tank body 100 flows with sewage to be treated, and the tank body 100 is divided into multiple non-overlapping treatment areas. Dividing the tank body 100 into multiple treatment areas can achieve refined management and control. Compared with obtaining the average data of the entire tank body 100, collecting data for a single area of ​​the tank body 100 is closer to the actual situation of the sewage in the area.

[0034] Specifically, each treatment area is arranged with an aeration module 200, and a plurality of aeration modules 200 are commonly connected to a fan device 300, and each treatment area is arranged with an ORP meter 400. Among them, the aeration module 200 can be connected to the air outlet pipe of the fan device 300, and the connection method is an air pipe connection. The fan device 300 can use a Roots blower, that is, a volumetric blower, which is more suitable for gas transportation in low-pressure occasions. Of course, the type of blower can also be selected according to the size of the sewage treatment volume. For example, if the sewage treatment volume is small, a screw blower can also be selected. Roots blowers and screw blowers are both volumetric blowers. When the sewage treatment volume is large, a centrifugal blower, such as an air suspension or magnetic suspension blower, can be selected.

[0035] ORP stands for Oxidation Reduction Potential, which is used to reflect the macroscopic redox properties of all substances in the water quality system. The larger the ORP value, the stronger the oxidizing property of the water body, and the smaller the value, the stronger the reducing property of the water body. With the help of ORP meter 400, the level of precise control of the redox property of the water body can be greatly improved. Combining ORP meter 400 with aeration module 200 can finely control the aeration degree in each treatment area by region, thereby improving the sewage treatment effect.

[0036] In terms of control, the control module 500 is electrically connected to all ORP meters 400, and the control module 500 is also electrically connected to the fan device 300. Through the program control in the control module 500, the detection signal fed back by the ORP meter 400 is used to adjust the air volume and opening of the fan device 300 to achieve aeration volume control in the treatment area.

[0037] For example, in the pool 100, the dissolved oxygen content in some areas is low, resulting in an increase in the concentration of reducing substances or organic pollutants after accumulation, and the ORP value reflected in the ORP meter 400 is low; while in another area of ​​the pool 100, the dissolved oxygen content is high, reflecting that the reducing substances or organic pollutants are promptly processed by microorganisms, and the value in the ORP meter 400 is high. In the above case, if the ORP meter 400 is only provided at one place in the pool 100, and the ORP value at that place is used to reflect the water quality of the entire pool 100, the obtained ORP value may be low, and the entire pool 100 undergoes a large amount of aeration, and the area with a high dissolved oxygen content continues to be aerated, and the effect obtained is also limited, which increases the aeration energy consumption. Or the obtained ORP value is high, resulting in insufficient aeration, and the area with a high dissolved oxygen content can normally undergo aerobic reaction, but the area with a low dissolved oxygen content cannot be replenished with oxygen in time, and the aerobic reaction (microorganism treatment) rate is low, and the effluent water quality of the entire pool 100 is poor.

[0038] It is understandable that the aeration module 200 is connected to a lifting device, and the lifting device is used to raise the height of the aeration module 200.

[0039] For example, if a single aeration module 200 is clogged or damaged, the aeration module 200 can be lifted by a lifting device, that is, the height of the aeration module 200 is increased so that the aeration module 200 is exposed to the water surface for easy inspection and maintenance. The aeration module 200 can be lifted out of the water surface for inspection and maintenance by a lifting device, so that maintenance can be achieved without stopping production (the other aeration modules 200 continue to aerate). It should be understood that the lifting device is a relatively mature technology, so it will not be described in detail, such as the whole set of liftable aeration devices disclosed in Publication No. CN112125391A.

[0040] Reference Figure 2 As shown, it can be understood that the aeration module 200 includes a plurality of aeration branch pipes 210 arranged in parallel, one ends of the plurality of aeration branch pipes 210 are interconnected, and the connected ends are connected to the fan device 300, and a plurality of air outlets are provided on the aeration branch pipe 210, and the plurality of air outlets are arranged and distributed along the axial direction of the aeration branch pipe 210.

[0041] The aeration branch pipe 210 can increase the air outlets of the aeration module 200 as much as possible and distribute the air outlets more widely, thereby increasing the effective aeration area of ​​the aeration module 200. A larger aeration area can increase the dissolved oxygen content of the water body and improve the aeration efficiency. Figure 3 As shown, further, in order to increase the dissolved oxygen content of the water body, an aeration plate 220 can be installed at the air outlet. The aeration plate 220 is a commonly used aeration device, which increases the oxygen concentration in the water by evenly dispersing air or oxygen into the water, thereby promoting the decomposition and degradation of pollutants by microorganisms. The aeration plate 220 is generally disc-shaped, and a plurality of pores are opened on its surface, and air or oxygen overflows from the pores into the water body.

[0042] It can be understood that each aeration branch pipe 210 is provided with a rotating mechanism 230 , and the rotating mechanism 230 is used to drive the aeration branch pipe 210 to rotate around the circumference of the aeration branch pipe 210 .

[0043] The rotating mechanism 230 drives the aeration branch pipe 210 to rotate circumferentially, and the aeration branch pipe 210 can be used to disturb and stir the water body, thereby reducing the sludge dead zone of the tank body 100. The circumferential direction here refers to the circumferential direction of the aeration branch pipe 210. In the traditional aeration method, aeration is uneven. In the area where aeration is not possible, oxygen utilization is insufficient, and the activated sludge gradually loses its biological activity and becomes dead sludge, that is, there is a sludge dead zone.

[0044] Reference Figure 4 As shown, it can be understood that in some embodiments, the rotating mechanism 230 includes a driving member, a rack 232 and a plurality of gears 233, each aeration branch pipe 210 is equipped with a gear 233, the gear 233 is coaxial with the aeration branch pipe 210, the rack 232 is meshed with all the gears 233, and the driving member is connected to the rack 232 to drive the rack 232 to move linearly.

[0045] The driving member drives the rack 232 to move linearly, and the rack 232 drives the gear 233 to rotate, so that the aeration branch pipe 210 rotates around its own circumference. The rotating aeration branch pipe 210 can stir the water, mix the activated sludge, and reduce the sludge dead zone of the tank body 100. It should be understood that the aeration branch pipe 210 can be rotated by setting a rotating joint while maintaining air supply connection.

[0046] The driving member may be a linear driving member such as a cylinder, for example, the piston rod of the cylinder is connected to the rack 232, and the piston rod is parallel to the rack 232, and when the piston rod moves, it can drive the rack 232 to move linearly. Alternatively, the driving member may be a motor, and the motor and the rack 232 also use a gear transmission method to convert the rotational transmission into a linear transmission, and then into the rotational movement of the aeration branch pipe 210.

[0047] It is understandable that the circumference of each gear 233 is consistent, and the displacement of the rack 232 is greater than or equal to the circumference of the gear 233 .

[0048] The circumference of the gears 233 is consistent, which can ensure that the rotation amount of each aeration branch pipe 210 is the same on the one hand, and can also ensure that the rack 232 can mesh with each gear 233 on the other hand, and the structural design is simpler. For example, when the diameter of one of the gears 233 is smaller than that of the other gears 233, the rotation axis of the gear 233 needs to be moved down so that the gear 233 can continue to mesh with the rack 232. For example, when the diameter of one of the gears 233 is larger than that of the other gears 233, the rotation axis of the gear 233 needs to be moved up, otherwise after the rack 232 meshes with the gear 233 with the larger diameter, the remaining gears 233 are spaced apart from the rack 232 and cannot mesh.

[0049] When the displacement of the rack 232 is equal to the circumference of the gear 233, one displacement of the rack 232 can make the aeration branch pipe 210 rotate exactly one circle. The displacement of the rack 232 can be increased to increase the number of rotations of the aeration branch pipe 210. However, an excessively large displacement of the rack 232 requires more space, and if a cylinder is used to drive the rack 232 to move, the stroke of the cylinder also needs to be increased synchronously.

[0050] It is understandable that each aeration module 200 is provided with a separate valve 240 , and the valve 240 is used to control the on-off between the aeration module 200 and the fan device 300 .

[0051] Each aeration module 200 is provided with a valve 240, which can independently control the aeration volume of the aeration module 200 to achieve fine control of the area in the tank body 100. Furthermore, each valve 240 is electrically connected to the control module 500, and the control module 500 adjusts the opening of the valve 240 according to the value of the ORP meter 400.

[0052] It is understandable that each aeration module 200 is also provided with an air flow meter 250 , and the air flow meter 250 is connected in series with the valve 240 .

[0053] The air flow meter 250 can cooperate with the control module 500 to regulate the valve 240. For example, when the control module 500 increases the opening of the valve 240, the data of the air flow meter 250 will increase synchronously, and the control module 500 can know that the valve 240 is correctly regulated. Furthermore, after long-term use, the system in the control module 500 can establish a relationship between the flow rate and the ORP value. When the control module 500 needs to regulate the aeration volume of an aeration module 200 so that the ORP value around it reaches a predetermined range, the control module 500 can adjust the valve 240 to a suitable opening according to the feedback of the air flow meter 250.

[0054] It should be understood that the fan device 300 can be connected to a VFD variable frequency controller for adjusting the opening of the fan device 300 to achieve changes in air volume. The pool body 100 is controlled in sections. When the concentration of influent pollutants is high, the control module 500 can adjust the valves 240 in the inlet area of ​​the pool body 100 to reduce the aeration volume of the aeration module 200 in the area, thereby making the inlet area anoxic. The pool body 100 can have both anoxic and aerobic functions.

[0055] The aeration module 200 is separately equipped with an ORP meter 400, and the aeration volume of the aeration module 200 is regulated according to the set ORP value and the data fed back by the ORP meter 400. In the case of water quality changes, when the values ​​of more than 50% of the ORP meters 400 in the pool body 100 exceed the conventional set value, the control module 500 analyzes the ORP data, controls the opening of the fan device 300 through the VFD variable frequency controller to adjust the air volume, and adjusts the overall aeration volume of the pool body 100 in real time. Correspondingly, when the ORP value of a single small area, that is, an individual treatment area, changes, the control module 500 adjusts the valve 240 to achieve the aeration volume adjustment of a single aeration module 200.

[0056] Furthermore, the ORP data provided by the ORP meter 400 can also monitor whether the aeration module 200 has any abnormality. For example, if the ORP value of a single treatment area and the value of the air flow meter 250 are greatly different from the data of other treatment areas, it is determined that the treatment area has an abnormality. Specifically, if the ORP value and the value of the air flow meter 250 of the treatment area are higher than those of other treatment areas, then the aeration module 200 of the treatment area may be damaged; if the ORP value and the value of the air flow meter 250 of the treatment area are lower than those of other treatment areas, then the aeration module 200 of the treatment area may be blocked. When an abnormality occurs in the aeration module 200, the valve 240 on the aeration module 200 can be controlled to close, and the aeration module 200 can be lifted using a lifting device for non-stop maintenance.

[0057] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A precision aeration device for an aerobic pool, characterized in that: include: A tank body (100), wherein sewage to be treated flows through the tank body (100), and the tank body (100) is divided into a plurality of non-overlapping treatment areas; A plurality of aeration modules (200), each of the treatment zones being provided with an aeration module (200), and the plurality of aeration modules (200) being commonly connected to a fan device (300); A plurality of ORP measuring instruments (400), each of the treatment zones being provided with the ORP measuring instrument (400); A control module (500), wherein the control module (500) is electrically connected to all of the ORP measuring instruments (400), and the control module (500) is also electrically connected to the fan device (300).

2. The precise aeration device for aerobic pools according to claim 1, characterized in that: The aeration module (200) is connected to a lifting device, and the lifting device is used to raise the height of the aeration module (200).

3. The precise aeration device for aerobic pools according to claim 1, characterized in that: The aeration module (200) comprises a plurality of aeration branch pipes (210) arranged in parallel, one end of the plurality of aeration branch pipes (210) being interconnected, and the connected end being connected to the fan device (300), and a plurality of air outlets being arranged and distributed along the axial direction of the aeration branch pipe (210).

4. The precise aeration device for aerobic pools according to claim 3, characterized in that: The air outlets are all equipped with an aeration disk (220).

5. The precise aeration device for aerobic pools according to claim 3, characterized in that: Each of the aeration branch pipes (210) is provided with a rotating mechanism (230), and the rotating mechanism (230) is used to drive the aeration branch pipe (210) to rotate around the circumference of the aeration branch pipe (210).

6. The precise aeration device for aerobic pools according to claim 5, characterized in that: The rotating mechanism (230) comprises a driving member, a rack (232) and a plurality of gears (233); each of the aeration branch pipes (210) is provided with the gear (233); the gear (233) is coaxial with the aeration branch pipe (210); the rack (232) is meshed with all of the gears (233); and the driving member is in transmission connection with the rack (232) to drive the rack (232) to move linearly.

7. The precise aeration device for aerobic pools according to claim 6, characterized in that: The circumference of each gear (233) is consistent, and the displacement of the rack (232) is greater than or equal to the circumference of the gear (233).

8. The precise aeration device for aerobic pools according to claim 1, characterized in that: Each of the aeration modules (200) is provided with a separate valve (240), and the valve (240) is used to control the connection and disconnection between the aeration module (200) and the fan device (300).

9. The precise aeration device for aerobic pools according to claim 8, characterized in that: Each aeration module (200) is also provided with an air flow meter (250), and the air flow meter (250) is connected in series with the valve (240).

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