Performance testing device for denitrification filler

Abstract

The utility model provides a performance testing device for denitrification filler, which comprises a sewage preparation device, a nitrogen removal device, a nitrogen removal device, a nitrogen removal device, a nitrogen removal device and a nitrogen removal device and is characterized in that the sewage preparation device comprises a raw water tank and a lifting pump; the at least one acrylic reactor is connected with the sewage preparation equipment, is filled with a denitrification filler, is made of an acrylic material and is used for carrying out denitrification treatment on the sewage; the back water washing equipment is connected with the acrylic reactor and is used for washing gaps of the denitrification filler in the acrylic reactor, and the denitrification filler is placed in the acrylic reactor for denitrification test, so that the weight of the reactor is reduced, and meanwhile, observers can conveniently and intuitively check the state change of the denitrification filler.

Description

Technical Field

[0001] The utility model relates to the field of performance testing, in particular to a performance testing device for a denitrification filler. Background Art

[0002] Denitrification filler refers to a medium or carrier used in the sewage treatment process, which is mainly used to promote the conversion of nitrogen compounds (such as ammonia nitrogen, nitrate nitrogen, etc.) in sewage into harmless gases (usually nitrogen), thereby achieving the purpose of denitrification. The purpose of designing denitrification fillers is to provide a surface for microorganisms to attach and grow. These microorganisms can be heterotrophic or autotrophic bacteria. When sewage flows through a reactor filled with fillers, microorganisms will form a biofilm on the surface of the filler, and through the metabolic activities of the microorganisms on the biofilm, the nitrogen compounds in the sewage are gradually converted. For autotrophic denitrification processes, the filler may contain sulfur or other chemicals that can act as electron donors to help microorganisms carry out denitrification, thus eliminating the need for additional organic carbon sources.

[0003] In order to evaluate whether the denitrification packing can effectively remove nitrogen compounds under given conditions, it is often necessary to test the performance of the denitrification packing. Currently, the conventional methods for testing denitrification packing are glass beaker test and iron reactor test. Among them, the glass beaker experimental reactor is the simplest: the denitrification filler is placed in a glass beaker and nitrogen-containing wastewater of a specific concentration is added, and the changes in the concentration of nitrogen compounds in the nitrogen-containing wastewater are recorded. However, since the solid-liquid ratio of the beaker experimental reactor is difficult to accurately control, and the liquid flow form is different from that in engineering applications, the beaker experimental data results are poorly matched with the parameters in engineering applications, mainly; the iron reactor is a closed reactor with denitrification filler placed in iron or similar materials. Although it will also be equipped with corresponding lifting pumps, backwash pumps, aeration fans, etc., the iron reactor is a non-transparent container, which makes it impossible for observers to intuitively observe the flow channel changes, biofilm growth and physical state changes inside the filler. In addition, the iron reactor is relatively heavy, which makes it difficult to transport between different laboratories or from the laboratory to the field. The transportation and installation difficulties of the experiment are relatively large, and the price of the iron reactor itself may be high. Combined with the transportation, installation and maintenance costs, the overall cost will increase. Utility Model Content

[0004] The purpose of the utility model is to provide a performance testing device for a denitrification filler, which places the denitrification filler in an acrylic reactor for denitrification testing, thereby reducing the weight of the reactor and making it easier for observers to visually view the state changes of the denitrification filler.

[0005] To achieve the above objectives, the present technical solution provides a performance testing device for denitrification fillers, comprising:

[0006] Sewage preparation equipment, including raw water tanks for storing sewage and lift pumps for transporting sewage;

[0007] At least one acrylic reactor connected to the sewage preparation equipment, wherein the acrylic reactor is filled with denitrification filler and the material of the acrylic reactor is acrylic, and is used for denitrification treatment of sewage;

[0008] The backwashing equipment connected to the acrylic reactor is used to flush the gaps in the denitrification packing in the acrylic reactor.

[0009] Compared to the existing technology, this technical solution has the following characteristics and beneficial effects: The use of an acrylic reactor made of transparent acrylic material allows testers to directly observe the state changes of the internal denitrification filler, improving the intuitiveness and accuracy of the test. At the same time, by optimizing the position of the lift pump and adopting a bottom-up sewage flow method, the uniform distribution of the water flow is ensured, and the contact efficiency between the filler and the sewage is enhanced. In addition, the design of the multi-stage treatment structure and the configuration of the air-water backwash equipment enable the device to simulate the multi-stage treatment process in actual applications, effectively remove pollutants on the filler, and maintain the activity and service life of the filler. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of a performance testing device for denitrification filler according to one embodiment of the present invention.

[0011] In the figure: 10-sewage preparation equipment, 11-raw water tank, 12-lift pump, 20-acrylic reactor, 30-backwashing equipment, 31-fan, 32-water backwash device, 321-backwash pump, 322-product water tank. DETAILED DESCRIPTION

[0012] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0013] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms cannot be understood as limiting the present invention.

[0014] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0015] like Figure 1 As shown, this scheme provides a performance testing device for denitrification filler, including:

[0016] Sewage preparation equipment 10, including a raw water tank 11 for storing sewage and a lift pump 12 for transporting sewage;

[0017] At least one acrylic reactor 20 connected to the sewage preparation equipment 10, wherein the acrylic reactor 20 is filled with denitrification filler and the material of the acrylic reactor 20 is acrylic, and is used for denitrification treatment of sewage;

[0018] The backwashing device 30 connected to the acrylic reactor 20 is used to flush the gaps between the denitrification fillers in the acrylic reactor 20 .

[0019] The denitrification packing performance testing device provided in this solution is used in the field of performance testing of denitrification packing. The denitrification packing is placed in an acrylic reactor 20 to denitrify wastewater. Since the acrylic plate of the acrylic reactor 20 in this solution is a transparent plate, the tester can intuitively observe the flow channel state inside the denitrification packing, changes in the degree of contamination of the packing, and changes in the reaction and consumption of the packing; at the same time, since the weight of the acrylic material is relatively light, the entire set of denitrification packing performance testing device has the advantages of simple installation, convenient transportation, high degree of integration, and high equipment integrity.

[0020] In some embodiments, the lift pump 12 of the present invention is placed in the raw water tank 11. The lift pump 12 is connected to the inlet of the acrylic reactor 20 through a pipeline to lift the untreated sewage in the raw water tank 11 into the acrylic reactor 20 for denitrification treatment. It should be noted that the lift pump 12 is placed below the inlet of the acrylic reactor 20 to facilitate lifting the sewage from bottom to top into the acrylic reactor 20. This helps to create a uniform upward water flow, making the water flow more stable and avoiding the flow turbulence caused by injection from the top. In addition, the sewage can be fully contacted with the denitrification filler, thereby improving the denitrification efficiency. In addition, the method of lifting sewage from bottom to top can reduce the possibility of air entering the acrylic reactor 20, avoiding the formation of bubbles that interfere with the normal sewage treatment process.

[0021] In some embodiments, an inlet is provided at the bottom of the acrylic reactor 20, and the lift pump 12 is connected to the inlet via a pipeline. This arrangement further facilitates the upward flow of wastewater within the acrylic reactor 20. Furthermore, to test the performance of the denitrification packing, it is necessary to control the residence time of the wastewater and the denitrification packing. Therefore, the lift pump 12 is configured to transport wastewater upward from the bottom inlet of the acrylic reactor 20, which also helps control the reaction time between the wastewater and the denitrification packing.

[0022] The acrylic reactor 20 of this solution is a hollow cylindrical structure made of acrylic material, and the denitrification filler is filled in the acrylic reactor 20. The reason why this solution specifically adopts the acrylic reactor 20 is that acrylic material generally has good transparency, which means that testers can directly observe the conditions inside the reactor, such as the state of the denitrification filler, color changes, biofilm growth, etc., which is very useful for evaluating the performance of the filler and monitoring the treatment process. In addition, compared with iron materials, acrylic material is lighter, making the entire device easier to carry and install, and also convenient for moving to different testing locations. In addition, acrylic has good tolerance to most acid and alkaline solutions, suitable for sewage environments containing chemical substances, and is not easily corroded. Acrylic material is not as easy to shatter as glass, providing a higher safety factor, especially in laboratory or field testing environments.

[0023] In some embodiments, the denitrification packing completely fills the interior of the acrylic reactor 20. This complete filling method allows the performance testing device to be consistent with the application model used in engineering applications, providing a higher degree of compatibility and resulting in more reliable and repeatable test results. Furthermore, this complete filling method ensures full contact between the wastewater and the packing, avoiding short-circuiting effects caused by gaps between the denitrification packing, thereby improving the accuracy of test data. It also reduces test errors caused by uneven packing layers, ensuring that each test is conducted in a stable environment.

[0024] This solution does not impose any special restrictions on the number of acrylic reactors 20. Figure 1As shown, in a special embodiment of the present invention, the denitrification filler performance test device of the present invention includes two acrylic reactors 20 connected in sequence. At this time, the first acrylic reactor is connected to the lifting pump 12, and the second acrylic reactor is connected to the first acrylic reactor. The present invention can test the performance of the denitrification filler under different conditions by setting up multiple linked acrylic reactors 20. For example, the first acrylic reactor can be used to test the processing capacity of the denitrification filler under high nitrogen content, and the second acrylic reactor can be used to test the processing capacity of the denitrification filler under low nitrogen content. In addition, linked denitrification treatment equipment is often collected in the actual production process. Therefore, the denitrification filler performance test device of the present invention can also simulate the real engineering application scenario as much as possible.

[0025] Specifically, an outlet is provided on the top side of the acrylic reactor 20, and an inlet is provided on the bottom side. At this time, the sewage at the outlet of the first acrylic reactor 20 enters the second acrylic reactor 20 from bottom to top through the inlet of the second acrylic reactor 20. It should be noted that the outlet and inlet of the acrylic reactor 20 are arranged relative to the central axis of the acrylic reactor 20, the height of the inlet is lower than the height of the lowest plane of the denitrification packing, and the height of the outlet is higher than the height of the highest plane of the denitrification packing.

[0026] In some embodiments, the outlet of the acrylic reactor 20 is connected to a wastewater tank to transport the wastewater treated by the denitrification filler to the wastewater tank. When the denitrification filler performance testing device includes two or more acrylic reactors 20, the outlet of the last acrylic reactor 20 is connected to the wastewater tank to achieve wastewater treatment.

[0027] In order to prevent pollutants from entering the acrylic reactor 20, the denitrification filler performance test device of this scheme is additionally equipped with an air-water backwashing device 30, wherein the backwashing device 30 includes a fan 31 and / or a water backwashing device 32 connected to the acrylic reactor 20, the fan 31 is used to transport natural air into the acrylic reactor 20 to achieve air washing, and the water backwashing device 32 is used to transport water into the acrylic reactor 20 to achieve water washing.

[0028] It should be noted that since the acrylic reactor 20 used in this solution is a transparent container made of acrylic material, the observer can intuitively see the status of the denitrification filler in the acrylic reactor 20. When the observer observes that the pollutants in the acrylic reactor 20 have increased significantly, the acrylic reactor 20 can be cleaned by air washing, water washing, or a combination of air and water washing. In some embodiments, the acrylic reactor 20 is subjected to the steps of air washing-water washing-air and water coordinated backwashing.

[0029] Specifically, this solution uses the fan 31 to deliver natural air into the acrylic reactor 20, which can loosen the surface of the denitrification filler, remove light pollutants on the surface, and improve the air permeability and fluidity of the filler; this solution uses the water backwash device 32 to deliver water into the acrylic reactor 20, which can flush the pollutants in the gaps of the filler and remove heavier sediments. Combining the advantages of air washing and water washing, gas is first used to loosen the pollutants on the surface and gaps of the filler, and then water is used to flush, which can more thoroughly remove the pollutants and restore the cleanliness and activity of the filler.

[0030] In some embodiments of the present solution, the fan 31 is connected to the acrylic reactor 20 through an air duct to transport natural wind into the acrylic reactor 20 .

[0031] In some embodiments, the water backwash device 32 includes a water production tank 322 and a backwash pump 321 disposed within the water production tank 322. The backwash pump 321 is connected to the acrylic reactor 20 via a pipeline to transport water within the water production tank 322 to the acrylic reactor 20. Specifically, the fan 31 and the backwash pump 321 are both connected to the inlet of the acrylic reactor 20 via a pipeline. If the denitrification packing performance testing device includes multiple acrylic reactors 20, the fan 31 and the backwash pump 321 are both connected to the inlet of the first acrylic reactor 20 via a pipeline.

[0032] The specific operation of the denitrification packing performance testing device is as follows: the denitrification packing is placed in the acrylic reactor 20, the sewage to be treated is placed in the raw water tank 11, and the sewage in the raw water tank 11 is lifted into the acrylic reactor 20 for sewage treatment via the lift pump 12. Observers can visually observe the state changes of the denitrification packing in the acrylic reactor 20 through the acrylic reactor 20. In addition, this solution can control the residence reaction time of the sewage and denitrification packing by the water intake of the lift pump 12. When the observer observes a large number of obvious pollutants in the acrylic reactor 20, the fan 31 of the backwash device 30 or the water backwash device 32 can be turned on to backwash the acrylic reactor 20.

[0033] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, any technical solution that is the same or similar to that of the present application falls within the scope of protection of the present invention.

Claims

1. A performance testing device for denitrification filler, characterized in that: include: Sewage preparation equipment (10), including a raw water tank (11) for storing sewage and a lifting pump (12) for conveying sewage; At least one acrylic reactor (20) connected to the sewage preparation equipment (10), wherein the acrylic reactor (20) is filled with a denitrification filler and the material of the acrylic reactor (20) is acrylic, and is used for denitrification treatment of sewage; The backwashing device (30) connected to the acrylic reactor (20) is used to flush the gaps of the denitrification filler in the acrylic reactor (20).

2. The performance testing device of the denitrification filler according to claim 1, characterized in that: The lift pump (12) is placed in the raw water tank (11), and the lift pump (12) is connected to the inlet of the acrylic reactor (20) through a pipeline.

3. The performance testing device of the denitrification filler according to claim 1, characterized in that: The lift pump (12) is placed below the inlet of the acrylic reactor (20).

4. The performance testing device for denitrification filler according to claim 1, characterized in that: The acrylic reactor (20) is a hollow cylindrical structure made of acrylic material.

5. The performance testing device for denitrification filler according to claim 1, characterized in that: The denitrification filler completely fills the inner space of the acrylic reactor (20).

6. The performance testing device for denitrification packing according to claim 1, characterized in that: The denitrification filler performance testing device comprises two acrylic reactors (20) connected in sequence, wherein the first acrylic reactor is connected to a lifting pump (12), and the second acrylic reactor is connected to the first acrylic reactor.

7. The performance testing device for denitrification packing according to claim 1, characterized in that: An outlet is arranged on the top side of the acrylic reactor (20), and an inlet is arranged on the bottom side. The outlet and the inlet of the acrylic reactor (20) are arranged relative to the central axis of the acrylic reactor (20).

8. The performance testing device for denitrification packing according to claim 1, characterized in that: The outlet of the acrylic reactor (20) is connected to a wastewater tank.

9. The performance testing device for denitrification packing according to claim 1, characterized in that: The backwashing device (30) comprises a fan (31) and / or a water backwashing device (32) connected to the acrylic reactor (20), wherein the fan (31) is used to deliver natural wind into the acrylic reactor (20) to achieve air washing, and the water backwashing device (32) is used to deliver water into the acrylic reactor (20) to achieve water washing.

10. The performance testing device for denitrification packing according to claim 9, characterized in that: The water backwash device (32) includes a water production tank (322) and a backwash pump (321) disposed in the water production tank (322). The backwash pump (321) is connected to the acrylic reactor (20) through a pipeline to transport the water in the water production tank (322) to the acrylic reactor (20).

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