Integrated shortcut nitrification anaerobic ammonia oxidation denitrification treatment device
The integrated nitrification anaerobic ammonia oxidation denitrification device addresses inefficiencies in separate zone processes by combining them in a single reactor, achieving cost-effective and efficient nitrogen removal with controlled conditions.
Patent Information
- Application Number
- CN202420009152.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-03
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-01-03
AI Technical Summary
Current nitrification and denitrification technologies require separate aerobic and anoxic zones, leading to increased operating costs, resource consumption, and inefficiencies due to inconsistent processes, while the addition of external carbon sources and alkalinity poses risks and occupies large areas.
An integrated short-range nitrification anaerobic ammonia oxidation denitrification device that combines processes in a single reactor, using a two-phase separation partition and controlled conditions to maintain bacterial activity without external carbon or alkalinity, achieving efficient denitrification with reduced volume and power consumption.
The device reduces construction and maintenance costs, saves space, and achieves efficient nitrogen removal with low aeration and power use, minimizing secondary pollution and sludge production.
Smart Images
Figure CN222250272U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of denitrification treatment devices, in particular to an integrated short-range nitrification anaerobic ammonia oxidation denitrification treatment device. Background Art
[0002] Landfill leachate is a high-concentration ammonia nitrogen wastewater produced during the stacking and landfilling of domestic garbage. As the landfill process progresses, the concentration of organic matter in the wastewater decreases significantly, while the concentration of ammonia nitrogen continues to rise. It is a typical low C / N ratio wastewater with complex pollutant components, poor biodegradability, and serious pollution. With the enrichment of nitrogen sources in natural water quality, the discharge requirements of urban sewage for total nitrogen are getting higher and higher. This device uses short-range nitrification and anaerobic ammonia oxidation to achieve the simultaneous removal of ammonia nitrogen and nitrite nitrogen and generate nitrogen gas under anaerobic conditions, using ammonia nitrogen as an electron donor and nitrite nitrogen produced by short-range nitrification as an electron acceptor. Compared with traditional nitrification and denitrification processes, it can effectively reduce aeration costs, sludge production, organic carbon sources, and alkalinity requirements. At present, the control of nitrogen in wastewater treatment, especially the treatment of total nitrogen and ammonia nitrogen, has become a hot topic in current research.
[0003] However, there are some problems with the existing technology: the current traditional nitrification and denitrification denitrification technology requires the separate setting of aerobic zones and anoxic zones to meet the needs of different bacterial species, but the increase in treatment processes will lead to an increase in operating costs and operational difficulties. In addition, due to the inconsistency of nitrification and denitrification in time and space, the overall denitrification efficiency of the process is limited. At the same time, a large amount of external carbon source and alkalinity need to be supplemented, which not only occupies a large area, but also requires a large amount of reagents, resulting in huge energy and resource consumption. The addition of carbon source also has the risk of excessive organic matter, affecting the water quality, and has become a major bottleneck restricting the further improvement of sewage treatment in urban sewage treatment plants and industrial parks in my country. Therefore, we propose an integrated short-range nitrification anaerobic ammonia oxidation denitrification treatment device. Utility Model Content
[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide an integrated short-term nitrification anaerobic ammonia oxidation denitrification treatment device, which is completed in a constant reactor through short-term nitrification anaerobic ammonia oxidation, so that there is no need to set up aerobic tank and anaerobic tank separately, and the short-term nitrification chamber and the biofilm reaction chamber are separated by a two-phase separation partition, which can greatly reduce the volume of the reactor and make the suspended filler in the bed biofilm reaction chamber lose, thereby achieving the effect that the device can save construction cost and maintenance cost.
[0005] The utility model is realized in this way: an integrated short-range nitrification anaerobic ammonia oxidation denitrification treatment device comprises:
[0006] A treatment device, wherein a separation baffle is fixedly installed inside the treatment device, and a water inlet pipe is arranged inside the treatment device, and one end of the water inlet pipe passes through the treatment device and is arranged at an upper end outside the treatment device;
[0007] A reflux water inlet pipe, the reflux water inlet pipe is arranged on one side of the treatment device, one end of the reflux water inlet pipe passes through the treatment device and is arranged on the upper layer inside the treatment device, the other end of the reflux water inlet pipe passes through the treatment device and is connected to the water inlet pipe, a reflux pump is arranged on the surface of the reflux water inlet pipe, and a temperature measuring instrument and a measuring instrument are fixedly installed on the upper end of the treatment device;
[0008] A jet aerator water pipe, wherein the jet aerator water pipe is arranged inside the treatment device, one end of the jet aerator water pipe is arranged at the upper end outside the treatment device, the other end of the jet aerator water pipe is arranged on one side outside the treatment device, and a jet pump is arranged on the other end of the jet aerator water pipe.
[0009] Optionally, a fan is provided at the upper end of the treatment device, and the fan is fixedly connected to the water pipe of the jet aerator.
[0010] Optionally, the treatment device is divided into an upper layer and a lower layer, the upper layer of the treatment device is set as a biofilm reaction chamber, and the lower layer of the treatment device is set as a short-range nitrification reaction chamber.
[0011] Optionally, biological composite fillers are fixedly installed at both ends of the interior of the biofilm reaction chamber, and several groups of suspended fillers are arranged inside the short-range nitrification reaction chamber.
[0012] Optionally, the biofilm reaction chamber and the short-range nitrification reaction chamber are both provided with sampling ports, a water outlet pipe is fixedly installed between the sampling ports, and one end of the water outlet pipe passes through the sampling port and the upper end of the treatment device arranged on the outside of the treatment device.
[0013] Optionally, a stirring perforated tube is provided on the other side of the treatment device, one end of the stirring perforated tube passes through the treatment device and is arranged at the lower end inside the short-range nitrification reaction chamber, and the other end of the stirring perforated tube passes through the treatment device and is arranged at the upper end inside the short-range nitrification reaction chamber, and a hydraulic stirring pump is fixedly installed on the surface of the stirring perforated tube.
[0014] Compared with the prior art, the beneficial effects of the utility model are:
[0015] 1. The short-range nitrification and anaerobic ammonia oxidation are completed in a constant reactor, so there is no need to set up aerobic tanks and anaerobic tanks separately. The short-range nitrification chamber and the biofilm reaction chamber are separated by a two-phase separation partition, which can greatly reduce the volume of the reactor and prevent the loss of suspended fillers in the biofilm reaction chamber. This device can save construction and maintenance costs, save space, reduce investment, and prevent the loss of suspended fillers.
[0016] 2. This device does not require the addition of an organic carbon source or alkalinity. The dissolved oxygen temperature meter is linked to the fan to keep the dissolved oxygen at 0.2-0.3 mg / L, the temperature at 26-30°C, and the pH between 7.5 and 8.0. It can achieve short-range nitrification and complete efficient denitrification reaction with small aeration volume and low power consumption. It does not require the addition of an organic carbon source or alkalinity sludge, has low output, and has a small secondary pollution effect.
[0017] 3. The anaerobic ammonia oxidation chamber uses a water pump to circulate and stir the perforated pipe in the water, and then controls the stirring speed by the water pump flow rate, so that the ammonia oxidizing bacteria biological suspension filler completes convection mixing in the reaction chamber, so that the ammonia oxidizing bacteria maintains a high activity, so that the device can achieve efficient nitrogen removal, and the water pump perforation stirring makes the filler produce convection mixing effect.
[0018] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a structural schematic diagram provided by the utility model;
[0020] Figure 2 It is a schematic diagram of the sampling port provided by the utility model;
[0021] Figure 3 It is a schematic diagram of a stirring perforated tube provided by the utility model.
[0022] In the figure: 1. Biofilm reaction chamber; 2. Short-range nitrification reaction chamber; 3. Sampling port; 4. Water inlet pipe; 5. Suspended filler; 6. Stirring perforated pipe; 7. Hydraulic stirring pump; 8. Separation baffle; 9. Biological composite filler; 10. Jet aerator water pipe; 11. Temperature measuring instrument; 12. Measuring instrument; 13. Reflux water inlet pipe; 14. Water outlet pipe; 15. Jet pump; 16. Fan; 17. Reflux pump; 18. Treatment device. DETAILED DESCRIPTION
[0023] In order to further understand the content, features and effects of the utility model, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.
[0024] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.
[0025] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
[0026] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.
[0027] In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.
[0028] The structure of the utility model is described in detail below in conjunction with the accompanying drawings.
[0029] like Figures 1 to 3 As shown, the integrated short-range nitrification anaerobic ammonia oxidation denitrification treatment device provided by the embodiment of the utility model comprises:
[0030] The treatment device 18 has a separation baffle 8 fixedly installed inside the treatment device 18, and a water inlet pipe 4 is arranged inside the treatment device 18, and one end of the water inlet pipe 4 passes through the treatment device 18 and is arranged at the upper end outside the treatment device 18;
[0031] A reflux water inlet pipe 13 is arranged at one side of the treatment device 18, one end of the reflux water inlet pipe 13 passes through the treatment device 18 and is arranged at the upper layer inside the treatment device 18, the other end of the reflux water inlet pipe 13 passes through the treatment device 18 and is connected to the water inlet pipe 4, a reflux pump 17 is arranged on the surface of the reflux water inlet pipe 13, and a temperature measuring instrument 11 and a measuring instrument 12 are fixedly installed at the upper end of the treatment device 18;
[0032] The jet aerator water pipe 10 is arranged inside the treatment device 18, one end of the jet aerator water pipe 10 is arranged at the upper end outside the treatment device 18, the other end of the jet aerator water pipe 10 is arranged on one side outside the treatment device 18, and a jet pump 15 is arranged on the other end of the jet aerator water pipe 10.
[0033] The short-range nitrification and anaerobic ammonia oxidation are completed in a constant reactor, so that there is no need to set up aerobic tanks and anaerobic tanks separately. The short-range nitrification chamber and the biofilm reaction chamber 1 are separated by a two-phase separation partition 8, which can greatly reduce the volume of the reactor and make the suspended filler 5 in the bed biofilm reaction chamber 1 lose. Thus, the device can save construction costs and maintenance costs, save space, reduce investment, and prevent the loss of suspended filler 5.
[0034] Furthermore, the device does not require the addition of an organic carbon source or alkalinity, and uses a dissolved oxygen temperature measuring instrument 11 and a blower 16 to link the dissolved oxygen at 0.2-0.3 mg / L, the temperature at 26-30°C, and the pH at 7.5-8.0, thereby achieving short-range nitrification and completing an efficient denitrification reaction, with a small aeration volume and low power consumption; it does not require the addition of an organic carbon source or alkalinity sludge, has a low yield, and has a small secondary pollution effect;
[0035] Furthermore, a water pump is used in the anaerobic ammonia oxidation chamber to circulate and stir the water in the perforated pipe, and the stirring speed is controlled by the water pump flow rate, so that the ammonia oxidizing bacteria biological suspension filler 5 completes convection mixing in the reaction chamber, so that the ammonia oxidizing bacteria maintains a high activity, thereby achieving efficient denitrification of the device, and the water pump perforation stirring causes the filler to produce a convection mixing effect.
[0036] Specifically, a fan 16 is disposed at the upper end of the processing device 18 , and the fan 16 is fixedly connected to the jet aerator water pipe 10 .
[0037] The fan 16 is installed at one end of the jet aerator water pipe 10 so that the fan 16 can transport oxygen into the jet aerator water pipe 10 , thereby achieving the effect that the jet aerator water pipe 10 can supply oxygen to the treatment device 18 .
[0038] Specifically, the treatment device 18 is divided into an upper layer and a lower layer. The upper layer of the treatment device 18 is set as a biofilm reaction chamber 1, and the lower layer of the treatment device 18 is set as a short-range nitrification reaction chamber 2. Both ends of the biofilm reaction chamber 1 are fixedly installed with biological composite fillers 9, and the interior of the short-range nitrification reaction chamber 2 is provided with several groups of suspended fillers 5.
[0039] The biological composite filler 9 is arranged inside the biofilm reaction chamber 1, so that the biological composite filler 9 can effectively cut bubbles, improve the oxygen transfer rate and utilization rate, enable the water and gas biofilm to be fully exchanged, and the organic matter in the water to be efficiently treated. The suspended filler 5 is arranged in the short-range nitrification reaction chamber, so that the suspended filler 5 can intercept suspended matter.
[0040] Specifically, sampling ports 3 are provided inside the biofilm reaction chamber 1 and the short-range nitrification reaction chamber 2, and a water outlet pipe 14 is fixedly installed between the sampling ports 3. One end of the water outlet pipe 14 passes through the sampling port 3 and the treatment device 18 and is arranged at the upper end of the outer side of the treatment device 18.
[0041] Sampling ports are arranged inside the biofilm reaction chamber 1 and the short-range nitrification reaction chamber, so that sampling can be performed through the sampling ports, and the sample taken out can flow out from the outlet pipe 14 .
[0042] Specifically, a stirring perforated tube 6 is arranged on the other side of the treatment device 18, one end of the stirring perforated tube 6 passes through the treatment device 18 and is arranged at the lower end inside the short-range nitrification reaction chamber 2, and the other end of the stirring perforated tube 6 passes through the treatment device 18 and is arranged at the upper end inside the short-range nitrification reaction chamber 2, and a hydraulic stirring pump 7 is fixedly installed on the surface of the stirring perforated tube 6.
[0043] The anaerobic ammonia oxidation chamber uses a water pump to circulate and stir the water in the perforated pipe, and then controls the stirring speed by the water pump flow rate, so that the ammonia oxidizing bacteria biological suspension filler 5 completes convection mixing in the reaction chamber, so that the ammonia oxidizing bacteria maintains a high activity, thereby achieving the effect of efficient denitrification of the device.
[0044] Working principle: The dissolved oxygen (DO) in the short-range nitrification chamber is controlled at 0.2-0.3 mg / L. The dissolved oxygen is linked to the dissolved oxygen meter 12 and the fan 16 to achieve DO control. The temperature is controlled at 26-30°C and the pH is controlled between 7.5-8.0 by introducing steam into the short-range nitrification chamber to oxidize the nitrification reaction to nitrite nitrogen, thereby achieving short-range nitrification and completing efficient denitrification reaction. The anaerobic ammonia oxidation chamber uses a water pump to circulate and stir the perforated pipe in water. The stirring speed is controlled by the water pump flow rate, so that the ammonia oxidizing bacteria biological suspension filler 5 completes convection mixing in this reaction chamber, so that the ammonia oxidizing bacteria maintain a high activity, and nitrite nitrogen is used as an electron acceptor to oxidize ammonia nitrogen into nitrogen gas, thereby completing efficient denitrification.
[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0046] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An integrated short-range nitrification anaerobic ammonium oxidation denitrification treatment device, characterized by: include: A treatment device (18), wherein a separation baffle (8) is fixedly installed inside the treatment device (18), a water inlet pipe (4) is arranged inside the treatment device (18), and one end of the water inlet pipe (4) passes through the treatment device (18) and is arranged at an upper end outside the treatment device (18); a return water inlet pipe (13), the return water inlet pipe (13) being arranged at one side of the treatment device (18), one end of the return water inlet pipe (13) passing through the treatment device (18) and being arranged at an upper layer inside the treatment device (18), the other end of the return water inlet pipe (13) passing through the treatment device (18) and being connected to the water inlet pipe (4), a return pump (17) being arranged on the surface of the return water inlet pipe (13), and a temperature measuring instrument (11) and a measuring instrument (12) being fixedly mounted at the upper end of the treatment device (18); A jet aerator water pipe (10), wherein the jet aerator water pipe (10) is arranged inside a treatment device (18), one end of the jet aerator water pipe (10) is arranged at an upper end outside the treatment device (18), the other end of the jet aerator water pipe (10) is arranged at a side outside the treatment device (18), and a jet pump (15) is arranged on the other end of the jet aerator water pipe (10).
2. The integrated short-range nitrification anaerobic ammonium oxidation denitrification treatment device according to claim 1 is characterized in that: A fan (16) is provided at the upper end of the treatment device (18), and the fan (16) is fixedly connected to the jet aerator water pipe (10).
3. The integrated short-range nitrification anaerobic ammonium oxidation denitrification treatment device according to claim 1 is characterized in that: The treatment device (18) is divided into an upper layer and a lower layer. The upper layer of the treatment device (18) is configured as a biofilm reaction chamber (1), and the lower layer of the treatment device (18) is configured as a short-range nitrification reaction chamber (2).
4. The integrated short-range nitrification anaerobic ammonium oxidation denitrification treatment device according to claim 3 is characterized in that: Biological composite fillers (9) are fixedly installed at both ends of the biofilm reaction chamber (1), and a plurality of groups of suspended fillers (5) are arranged inside the short-range nitrification reaction chamber (2).
5. The integrated short-range nitrification anaerobic ammonium oxidation denitrification treatment device according to claim 4 is characterized in that: The biofilm reaction chamber (1) and the short-range nitrification reaction chamber (2) are both provided with sampling ports (3), and a water outlet pipe (14) is fixedly installed between the sampling ports (3). One end of the water outlet pipe (14) passes through the sampling port (3) and the treatment device (18) and is arranged at the upper end of one side outside the treatment device (18).
6. The integrated short-range nitrification anaerobic ammonium oxidation denitrification treatment device according to claim 1 is characterized in that: A stirring perforated pipe (6) is arranged on the other side of the treatment device (18), one end of the stirring perforated pipe (6) passes through the treatment device (18) and is arranged at the lower end inside the short-range nitrification reaction chamber (2), and the other end of the stirring perforated pipe (6) passes through the treatment device (18) and is arranged at the upper end inside the short-range nitrification reaction chamber (2), and a hydraulic stirring pump (7) is fixedly installed on the surface of the stirring perforated pipe (6).