High-ammonia-nitrogen wastewater treatment mechanism
Through the countercurrent contact treatment structure of the absorption tower and the solution tank, the poor recovery effect of ammonia in high ammonia nitrogen wastewater and secondary pollution are solved, and high-efficiency recovery and pollution-free treatment of ammonia nitrogen are achieved.
Patent Information
- Application Number
- CN202422094319.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-28
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-08-28
AI Technical Summary
In the prior art, the recycling effect of high ammonia nitrogen wastewater is poor and is prone to secondary pollution.
The combined structure of the absorption tower and the solution tank is adopted to treat ammonia nitrogen through countercurrent contact. The first distributor and the second distributor are used to contact the high ammonia nitrogen wastewater with air in countercurrent contact. After blowing off the ammonia nitrogen, the hydrochloric acid solution is then absorbed in countercurrent contact to achieve efficient ammonia recovery.
It achieves efficient recycling of ammonia nitrogen, avoids secondary pollution, and improves the effect of ammonia nitrogen wastewater treatment.
Smart Images
Figure CN223163255U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ammonia nitrogen wastewater treatment, and particularly relates to a high ammonia nitrogen wastewater treatment mechanism. Background Technique
[0002] The treatment of high ammonia nitrogen wastewater is an important topic in the field of sewage treatment, because too high a concentration of ammonia nitrogen in water bodies will have serious impacts on the environment and organisms, such as causing water eutrophication and affecting the survival of aquatic organisms.
[0003] With the rapid development and growth of industries such as chemical fertilizers and petrochemicals, the resulting high ammonia nitrogen wastewater has become one of the restricting factors for industry development. Currently, the main treatment methods for high ammonia nitrogen wastewater include stripping method, zeolite deammoniation method, membrane separation technology, MAP precipitation method, chemical oxidation method, and biological denitrification method; from the analysis of the sources of high-concentration combined soda wastewater in the soda production process, it can be seen that the wastewater has a high ammonia nitrogen and total nitrogen concentration, and the ammonia nitrogen and total nitrogen concentration can usually reach more than 5000 mg / L, belonging to typical high ammonia nitrogen wastewater; in the existing technology, the effect of recovering ammonia from high ammonia nitrogen wastewater is not good and secondary pollution is easily generated. Therefore, a high ammonia nitrogen wastewater treatment mechanism needs to be provided. Summary of the Utility Model
[0004] The purpose of the utility model is to overcome the above technical deficiencies, provide a high ammonia nitrogen wastewater treatment mechanism, and solve the problems that the effect of recovering ammonia from high ammonia nitrogen wastewater in the existing technology is not good and secondary pollution is easily generated.
[0005] To achieve the above technical purpose, the utility model adopts the following technical solutions:
[0006] The utility model provides a high ammonia nitrogen wastewater treatment mechanism, including an absorption tower and a solution tank. The absorption tower is sequentially provided with a first distributor, a partition plate, and a second distributor from top to bottom. An inlet is provided above the first distributor at the top of the absorption tower. An outlet is provided on the absorption tower between the partition plate and the first distributor. A liquid inlet is provided on the absorption tower between the partition plate and the second distributor. An air inlet is provided below the second distributor on the absorption tower. An air outlet is provided at the top of the absorption tower. The air outlet is communicated with the air inlet via a pumping member. The partition plate is provided with at least one air-lifting cap, and the exhaust port of the air-lifting cap is located above the outlet. The solution tank is filled with an acid solution, and the solution tank is connected to the liquid inlet via a first liquid pumping member.
[0007] In some embodiments, it further includes a wastewater storage tank, and the wastewater storage tank is communicated with the inlet via a second liquid pumping member.
[0008] In some embodiments, it further includes a light wastewater tank, and the light wastewater tank is communicated with the outlet.
[0009] In some embodiments, the air outlet is connected to one end of a conduit, the other end of the conduit is connected to a tee, and the tee is communicated with the air inlet via a third air extraction member.
[0010] In some embodiments, the tee is also communicated with a light wastewater tank.
[0011] In some embodiments, the light wastewater tank is also communicated with the top of the absorption tower via a third liquid extraction member.
[0012] In some embodiments, a liquid discharge port is provided at the bottom of the absorption tower, and the liquid discharge port is communicated with the solution tank.
[0013] In some embodiments, packing layers are provided at the bottoms of both the first distributor and the second distributor.
[0014] In some embodiments, a liquid level sensor is provided at the inner bottom of the absorption tower.
[0015] In some embodiments, the inner wall of the absorption tower is coated with an anti-corrosion coating.
[0016] Compared with the prior art, a high ammonia-nitrogen wastewater treatment mechanism provided by the present utility model has a liquid inlet at the top of the absorption tower above the first distributor, a liquid outlet between the partition plate and the first distributor on the absorption tower, a liquid inlet between the partition plate and the second distributor on the absorption tower, an air inlet below the second distributor on the absorption tower, an air outlet at the top of the absorption tower, the air outlet is communicated with the air inlet via an air extraction member, the partition plate is provided with at least one air-lifting cap, and the exhaust port of the air-lifting cap is above the liquid outlet. The solution tank contains hydrochloric acid solution, and the solution tank is communicated with the liquid inlet via a first liquid extraction member; after the high ammonia-nitrogen wastewater is dispersed into the absorption tower via the first distributor, it can contact the air transported into the absorption tower via the air inlet in a countercurrent manner. The air can blow off the ammonia-nitrogen in the wastewater. Subsequently, the ammonia-containing air after blowing off the wastewater is transported into the absorption tower again via the air inlet under the action of the air extraction member, and then can contact the hydrochloric acid solution dispersed into the absorption tower via the second distributor in a countercurrent manner. The hydrochloric acid solution can effectively absorb the ammonia in the air, the ammonia removal effect is good, and no secondary pollution will be generated. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a schematic structural diagram of a high ammonia-nitrogen wastewater treatment mechanism provided by an embodiment of the present utility model;
[0018] Figure 2 is a schematic structural diagram of an absorption tower provided by an embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0019] In order to make the objectives, technical solutions and advantages of the present utility model more clear and understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0020] In order to solve the technical problems in the prior art that the effect of ammonia recovery from high ammonia nitrogen wastewater is poor and secondary pollution is easily generated, the present utility model provides a high ammonia nitrogen wastewater treatment mechanism, which can effectively recover ammonia in high ammonia nitrogen wastewater and has a good recovery effect.
[0021] Please refer to Figure 1 - Figure 2 , Figure 1 - Figure 2 A high ammonia nitrogen wastewater treatment mechanism in an embodiment of the present utility model, including an absorption tower 1 and a solution tank 2. Inside the absorption tower 1, a first distributor 11, a partition plate 12 and a second distributor 13 are sequentially arranged from top to bottom. At the top of the absorption tower 1, above the first distributor 11, there is a liquid inlet 14. On the absorption tower 1, between the partition plate 12 and the first distributor 11, there is a liquid outlet 15. On the absorption tower 1, between the partition plate 12 and the second distributor 13, there is a liquid inlet 16. At the bottom of the absorption tower 1, below the second distributor 13, there is an air inlet 17. At the top of the absorption tower 1, there is an air outlet 18. The air outlet 18 is connected to the air inlet 17 via an air extraction member 19. The partition plate 12 is provided with at least one air-lifting cap 121, and the exhaust port of the air-lifting cap 121 is located above the liquid outlet 15. The solution tank 2 contains an acid solution. Specifically, the acid solution is a hydrochloric acid solution. The solution tank 2 is connected to the liquid inlet 16 via a first liquid extraction member 20.
[0022] It should be noted that a wastewater storage tank 3 is further included. The wastewater storage tank 3 is connected to the liquid inlet 14 via a second liquid extraction member 31. Specifically, the high ammonia nitrogen wastewater is filled in the wastewater storage tank 3. At the same time, the sewage steam condensate can be transported into the wastewater storage tank 3. After the sewage steam condensate and the high ammonia nitrogen wastewater are mixed to reach a certain temperature and concentration, they are sent into the liquid inlet 14 of the absorption tower 1 by the second liquid extraction member 31.
[0023] On the basis of the above solution, a fresh wastewater tank 4 is further included. The fresh wastewater tank 4 is connected to the liquid outlet 15. Specifically, the wastewater in the absorption tower 1 can overflow into the fresh wastewater tank 4 via the liquid outlet 15. In addition, the fresh wastewater tank 4 is also connected to the top of the absorption tower 1 via a third liquid extraction member 41. It should be noted that the wastewater that meets the qualified index can be sent to the terminal sewage treatment, and the unqualified wastewater is sent back to the top of the absorption tower 1 again.
[0024] In this specific embodiment, the air outlet 18 is connected to one end of the conduit 181, and the other end of the conduit 181 is connected to the three-way pipe 182. The three-way pipe 182 is communicated with the air inlet 17 via the air extraction member 19.
[0025] In addition, the three-way pipe 182 is also connected to the light wastewater tank 4.
[0026] In this specific embodiment, a liquid discharge port is provided at the bottom of the absorption tower 1, and the liquid discharge port is communicated with the solution tank 2. It should be noted that the hydrochloric acid solution after absorbing ammonia overflows from the bottom of the absorption tower 1 into the chlorine solution tank 2, and 31% hydrochloric acid can be supplemented according to the pH in the tank.
[0027] In addition, a liquid level sensor 5 is provided at the inner bottom of the absorption tower 1. The liquid level sensor 5 is used to monitor the liquid level at the inner bottom of the absorption tower 1 to ensure that the liquid level of the hydrochloric acid solution after absorbing ammonia at the inner bottom of the absorption tower 1 is lower than the height where the air inlet 17 is located.
[0028] On the basis of the above solution, packing layers 10 are provided at the bottoms of the first distributor 11 and the second distributor 13. In addition, the inner wall of the absorption tower 1 is coated with an anti-corrosion coating.
[0029] For a better understanding of the present invention, the following is combined with Figures 1 to 2 to detail the technical solution of the present invention:
[0030] By transporting the high ammonia-nitrogen wastewater through the liquid inlet 14 to the inner top of the absorption tower 1, under the action of the first distributor 11, the high ammonia-nitrogen wastewater is evenly distributed in the absorption tower 1. The high ammonia-nitrogen wastewater is in countercurrent contact with the air transported into the absorption tower 1 through the air inlet 17, and the air can blow off the ammonia nitrogen in the wastewater; subsequently, the ammonia-containing air after blowing off the wastewater is transported into the absorption tower 1 again through the air inlet 17 under the action of the air extraction member 19. After the hydrochloric acid solution contained in the solution tank 2 is transported into the absorption tower 1, it can be evenly dispersed by the second distributor, and the ammonia-containing air can be in countercurrent contact with the hydrochloric acid solution in the absorption tower, and the hydrochloric acid solution can effectively absorb the ammonia in the ammonia-containing air.
[0031] The above specific embodiments of the present invention do not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and deformations made according to the technical concept of the present invention should be included in the protection scope of the claims of the present invention.
Claims
1. A high ammonia nitrogen wastewater treatment mechanism, comprising an absorption tower and a solution tank. The absorption tower is sequentially provided with a first distributor, a partition plate and a second distributor from top to bottom, and is characterized in that, The top of the absorption tower is provided with a liquid inlet above the first distributor. The absorption tower is provided with a liquid outlet between the partition plate and the first distributor, a liquid inlet between the partition plate and the second distributor, an air inlet below the second distributor, and an air outlet at the top of the absorption tower. The air outlet is communicated with the air inlet via an air extraction member. The partition plate is provided with at least one air-lifting cap, and the exhaust port of the air-lifting cap is located above the liquid outlet. The solution tank contains an acid solution, and the solution tank is communicated with the liquid inlet via a first liquid extraction member.
2. The high ammonia nitrogen wastewater treatment mechanism according to claim 1, characterized in that, It further includes a waste water storage tank, and the waste water storage tank is communicated with the liquid inlet via a second liquid extraction member.
3. The high ammonia nitrogen wastewater treatment mechanism according to claim 1, characterized in that, It further includes a fresh waste water tank, and the fresh waste water tank is communicated with the liquid outlet.
4. A high ammonia-nitrogen wastewater treatment mechanism according to claim 3, characterized in that, The air outlet is connected to one end of a conduit, and the other end of the conduit is connected to a tee. The tee is communicated with the air inlet via a third air extraction member.
5. A high ammonia-nitrogen wastewater treatment mechanism according to claim 4, characterized in that, The tee is also communicated with the fresh waste water tank.
6. The high ammonia nitrogen wastewater treatment mechanism according to claim 3 or 5, characterized in that, The fresh waste water tank is also communicated with the top of the absorption tower via a third liquid extraction member.
7. The high ammonia nitrogen wastewater treatment mechanism according to claim 1, characterized in that, The bottom of the absorption tower is provided with a liquid discharge port, and the liquid discharge port is communicated with the solution tank.
8. A high ammonia nitrogen wastewater treatment mechanism according to claim 1, characterized in that, The bottoms of the first distributor and the second distributor are both provided with packing layers.
9. A high ammonia nitrogen wastewater treatment mechanism according to claim 1, characterized in that, A liquid level sensor is provided at the inner bottom of the absorption tower.
10. A high ammonia nitrogen wastewater treatment mechanism according to claim 1, characterized in that, The inner wall of the absorption tower is coated with an anti-corrosion coating.