An alkali feeding device for sewage nitration reaction

Abstract

The utility model relates to sewage treatment technical field especially a kind of for alkaline feeding device in sewage nitration reaction, including material box, the cover of material box top is equipped with open, material box bottom is equipped with material pipe, material pipe top and material box inside are communicated, material pipe is divided into upper, middle, lower three sections, and connecting box is equipped between upper section and middle section, middle section and lower section, and connecting box one side opening, opening side inner plugboard, plugboard can move in connecting box, plugboard is inserted to connecting box bottom, and plugging between upper, middle, lower three section material pipe is carried out. The device can be communicated between upper, middle, lower three section material pipe by plugboard, and the feeding of reagent can be carried out in batches according to specific requirements, so that feeding can well control feeding amount and feeding time, and personnel safety risk of directly pouring into pool is also avoided.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment, and in particular to an alkali dosing device for wastewater nitrification reaction. Background Technology

[0002] Most domestic wastewater treatment plants use the activated sludge process to remove pollutants. Ammonia nitrogen removal uses nitrification and denitrification processes. The nitrification reaction requires a certain level of alkalinity in the influent. For wastewater treatment plants with high influent ammonia nitrogen or those containing some industrial wastewater, there is often insufficient alkalinity in the influent, which leads to poor nitrification. This dosing device can effectively increase the alkalinity of the influent and improve the nitrification rate.

[0003] To increase the alkalinity of water and thus improve the nitrification rate of biological systems, it is necessary to add appropriate alkali to the system. This is because soda ash is corrosive and dissipates heat when it comes into contact with water. Currently, wastewater treatment plants that require alkalinity addition use different methods depending on their specific needs; there is no unified method or equipment for this purpose. Utility Model Content

[0004] The purpose of this invention is to provide an alkali dosing device for wastewater nitrification, which can effectively avoid the impact of the dosing process and also allow for more reasonable dosing based on the process characteristics of the nitrification reaction.

[0005] The above-mentioned technical problems are solved by the following technical solutions: An alkali dosing device for wastewater nitrification includes a material tank with an openable cover on top and a material pipe at the bottom. The top of the material pipe is connected to the inside of the material tank. The material pipe is divided into three sections: upper, middle, and lower. A connecting box is provided between the upper section and the middle section, and between the middle section and the lower section. One side of the connecting box is open, and an insert plate is inserted inside the open side. The insert plate can move inside the connecting box and is inserted to the bottom of the connecting box to seal the connection between the upper, middle, and lower sections of the material pipe.

[0006] Further technology of this utility model: Preferably, the insert plate is provided with a material discharge port. When the insert plate is inserted to the bottom of the connecting box, the material discharge port is misaligned with the material tube. When the insert plate is pulled out of the connecting box, the material discharge port can be connected to the material tube.

[0007] Preferably, a sealing plate is provided on one side of the insert plate, and when the insert plate is inserted to the bottom of the connector box, the sealing plate blocks the opening of the connector box.

[0008] Preferably, the inner side of the sealing plate is provided with a sealing ring that mates with the opening of the connecting box, and the outer side is provided with a pull handle.

[0009] Preferably, the top side wall of the middle section of the material pipe is provided with an extended and upward connecting pipe, a water pipe is provided on the connecting pipe, a valve is provided on the water pipe, and the water pipe is connected to an external water source.

[0010] Preferably, the side wall of the connecting pipe is provided with an overflow port.

[0011] The beneficial effects of this invention are as follows: This device can add the reagent in batches according to specific needs. At the same time, combined with the property that caustic soda dissolves in water, it can be prepared into an aqueous solution for addition. This allows for better control of the dosage and timing of addition, and also avoids the safety risks of directly pouring it into the pool. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments of this utility model will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this utility model and are not intended to limit the scope of this utility model. Wherein: Figure 1 This is a schematic diagram of a closed feed pipe for an alkali dosing device used in wastewater nitrification.

[0013] Figure 2 This is a schematic diagram of the feed pipe connection of an alkali dosing device used in wastewater nitrification.

[0014] Figure 3 A schematic diagram of the connecting pipe structure is provided.

[0015] The components are: 11. Material bin; 12. Cover plate; 13. Material pipe; 14. Connecting box; 15. Material outlet; 16. Sealing plate; 17. Pull handle; 18. Connecting pipe; 19. Water pipe; 20. Valve; 21. Overflow port. Detailed Implementation

[0016] To enable those skilled in the art to better understand this utility model, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0017] The terminology used in this invention refers to those general terms currently widely used in the art in consideration of the functionality of this invention; however, these terms may vary according to the intent, precedent, or new technology of those skilled in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of this invention. Therefore, the terminology used in this specification should not be construed as simple names, but rather based on the meaning of the terms and the overall description of this invention.

[0018] Reference Figures 1-2This embodiment provides an alkali dosing device for wastewater nitrification reaction, including a material box 11. The top of the material box 11 is provided with an openable cover plate 12, and the bottom of the material box 11 is provided with a material pipe 13. The top of the material pipe 13 is connected to the inside of the material box 11. The material pipe 13 is divided into three sections: upper, middle and lower. A connecting box 14 is provided between the upper section and the middle section, and between the middle section and the lower section. One side of the connecting box 14 is open, and a plate is inserted inside the open side. The plate can move inside the connecting box 14. The plate is inserted to the bottom of the connecting box 14 to seal the gaps between the upper, middle and lower sections of the material pipe 13.

[0019] In use, the feed box 11 is suspended from the wall of the wastewater nitrification reactor via external brackets. The feed box 11 serves as a storage structure, containing alkali. It is inserted into the insert plate between the middle and lower sections, sealing the passage between the middle and lower sections. The alkali falls from the feed pipe 13 into the insert plate between the middle and lower sections. Then, the insert plate between the upper and middle sections is inserted. The insert plate and the connecting box 14 are fitted with a clearance. The area between the two insert plates is where the quantitative reagent is added. When adding the reagent, first remove the insert plate between the middle and lower sections, and add the reagent between the two insert plates into the wastewater nitrification reactor. After the addition is complete, insert the insert plate between the middle and lower sections again, and open the insert plate between the upper and middle sections. The alkali in the feed box 11 falls again from the feed pipe 13 into the insert plate between the middle and lower sections. Then, insert the insert plate between the upper and middle sections again, and so on.

[0020] It should be noted that in this embodiment, the diameter of the feed tube 13 increases from top to bottom, and the whole is in the shape of a trumpet with a smaller top and a larger bottom, which facilitates the smooth drop of the medicine in the feed tube 13.

[0021] In the above structure, the insertion plate can restrict the connection between the upper, middle, and lower sections of the feed tube 13. However, in actual use, it was found that when the insertion plate is removed, the medicine inside the feed tube 13 may leak out from the connecting box 14. Furthermore, even if the insertion plate is not completely removed, and only the upper, middle, and lower sections of the feed tube 13 are connected, when the insertion plate is reinserted, the medicine may become stuck at the bottom of the connecting box 14, leading to the insertion plate not being properly inserted over time. To address this, this embodiment further addresses the following technical issue: The insert plate is provided with a discharge port 15. When the insert plate is inserted to the bottom of the connecting box 14, the discharge port 15 is misaligned with the material tube 13. When the insert plate is pulled outward from the connecting box 14, the discharge port 15 can be connected to the material tube 13. The upper, middle and lower sections of the material tube 13 are connected only through the discharge port 15. It is only necessary to pull out the insert plate part, connect the discharge port 15 to the material tube 13, and then insert the insert plate again, with the discharge port 15 misaligned with the material tube 13.

[0022] It should be noted that the aforementioned material tube 13, connecting box 14 and insert plate are all made of transparent PP structure, which is easy to observe, and PP material has good corrosion resistance.

[0023] A sealing plate 16 is provided on one side of the insert plate. When the insert plate is inserted to the bottom of the connecting box 14, the sealing plate 16 blocks the opening of the connecting box 14. The inner side of the sealing plate 16 is provided with a sealing ring that matches the opening of the connecting box 14, and the outer side is provided with a pull handle 17.

[0024] Reference Figure 3 The top side wall of the intermediate feed pipe 13 is provided with an extended and upward connecting pipe 18. A water pipe 19 is provided on the connecting pipe 18, and a valve 20 is provided on the water pipe 19. The water pipe 19 is connected to an external water source. An overflow port 21 is provided on the side wall of the connecting pipe 18. Taking advantage of the property that caustic soda flakes dissolve in water, it can be prepared as an aqueous solution for addition, which allows for better control of the dosage and timing.

[0025] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of this utility model.

Claims

1. A device for adding alkali in wastewater nitrification reaction, characterized in that, The device includes a material bin with an openable cover on top and a material pipe at the bottom. The top of the material pipe is connected to the inside of the material bin. The material pipe is divided into three sections: upper, middle, and lower. Connecting boxes are provided between the upper and middle sections, and between the middle and lower sections. One side of the connecting box is open, and an insert plate is inserted inside the open side. The insert plate can move inside the connecting box and is inserted to the bottom of the connecting box to seal the gaps between the upper, middle, and lower sections of the material pipe.

2. The alkali dosing device for wastewater nitrification reaction as described in claim 1, characterized in that: The insert plate is provided with a material discharge port. When the insert plate is inserted to the bottom of the connecting box, the material discharge port is misaligned with the material tube. When the insert plate is pulled out of the connecting box, the material discharge port can be connected to the material tube.

3. The alkali dosing device for wastewater nitrification reaction as described in claim 1, characterized in that: A sealing plate is provided on one side of the insert plate. When the insert plate is inserted to the bottom of the connector box, the sealing plate blocks the opening of the connector box.

4. The alkali dosing device for wastewater nitrification reaction as described in claim 3, characterized in that: The inner side of the sealing plate is provided with a sealing ring that matches the opening of the connecting box, and the outer side is provided with a pull handle.

5. The alkali dosing device for wastewater nitrification reaction as described in claim 1, characterized in that: The top side wall of the middle section material pipe is provided with an extended and upward connecting pipe, a water pipe is provided on the connecting pipe, a valve is provided on the water pipe, and the water pipe is connected to an external water source.

6. The alkali dosing device for wastewater nitrification reaction as described in claim 5, characterized in that: The connecting pipe has an overflow port on its side wall.

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