Denox treatment system with composite active coke

Abstract

The utility model provides a composite active coke carbon removal and denitrification treatment system and relates to the technical field of wastewater treatment, and the system adopts the coaxial nesting structure, and the bottom of the first -stage reaction pool is closed and vertically passes through the filter plate and is located at the bottom of the second -stage reaction pool, the filter plate is fixed in the inner wall of the lower part of the second -stage reaction pool and is integrated adjustable long -handled filter head, its radial is equipped with the filter slit, and the coke lifter is located in the first -stage reaction pool, realizes four in one function of coke feeding, water distribution, backwashing and coke lifting. The reclaimed water enters the coke lifter through the water inlet pipe, flows upwards through active coke filler one and removes COD through adsorption, the water body falls into the second -stage reaction pool, flows downwards through composite active coke filler two, removes total nitrogen through sulfur autotrophic denitrification, and the purified water is filtered through the long -handled filter head and is discharged through the water outlet pipe. The vent pipe is connected with vent opening one and vent opening two, and synchronous drainage prevents the pool body from deforming, and supports the multi -unit modular extension.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a composite activated coke carbon removal and denitrification treatment system. Background Technology

[0002] In the advanced treatment of recalcitrant organic wastewater and the pretreatment process for reclaimed water reuse, commonly used technologies include Fenton chromatography, ozone (advanced ozone oxidation), biological aerated filters (BAF), denitrification deep bed filters (DNF), and combinations of related processes, to remove COD and TN levels that still exceed usage or discharge requirements. However, these technologies generally suffer from high investment costs, complex processes, and high operation and maintenance costs. Therefore, this invention provides a composite activated carbon decarbonization and denitrification treatment system to solve one or more of the above problems. Utility Model Content

[0003] This invention provides a composite activated coke decarbonization and denitrification treatment system to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a primary reaction tank, a secondary reaction tank, and a coking device arranged in a coaxial nested configuration;

[0005] The primary reaction tank is sealed at the bottom and has a vertically inserted filter plate, and is located at the bottom of the secondary reaction tank;

[0006] The filter plate is fixedly installed on the lower inner wall of the secondary reaction tank, dividing the secondary reaction tank into upper and lower areas.

[0007] Preferably, the lower part of the primary reaction tank is provided with a vent.

[0008] The outer wall of the secondary reaction tank is provided with an inlet, an outlet, an overflow outlet, and a vent.

[0009] Preferably, the filter plate is equipped with several sets of adjustable long-handled filter heads, and the long-handled filter heads are provided with filter slits in the radial direction.

[0010] Preferably, the coke lifter is located inside the primary reaction tank and integrates coke feeding, water distribution, backwashing and coke lifting functions;

[0011] The primary reaction tank is filled with activated coke packing material.

[0012] Preferably, the space between the outer wall of the primary reaction tank and the upper surface of the filter plate is filled with composite activated coke packing material II;

[0013] The composite activated coke packing material II is used to load denitrifying and denitrifying thiobacterial community.

[0014] Preferably, the inlet pipe passes through the inlet and connects to the inlet of the coke extractor and the outlet pipe of the secondary sedimentation tank or other mud-water separation facility;

[0015] The water outlet pipe connects the water outlet to the water inlet pipe of the disinfection pool;

[0016] Overflow pipe, connecting the overflow outlet to the plant's drainage network;

[0017] The vent pipe is connected in series with vent outlet one and vent outlet two, and the other end is connected to the factory area drainage network.

[0018] Preferably, the inlet pipe, outlet pipe, and vent pipe are all equipped with control valves.

[0019] Preferably, it also includes an air inlet pipe, one end of which is connected to a water outlet pipe via a tee, and the other end of which is connected to a fan;

[0020] The intake pipe is equipped with a check valve and an intake valve.

[0021] Preferably, the primary reaction tank is made of a lightweight, corrosion-resistant material, including polyvinyl chloride, polyethylene, polypropylene, or polytetrafluoroethylene.

[0022] Preferably, multiple processing units are connected in parallel to form a modular integrated device.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] This utility model has a simple unit structure and reasonable investment. The primary reaction tank can be integrally formed using lightweight and corrosion-resistant materials and is easy to install. Nitrification and denitrification do not require the addition of a carbon source, resulting in low operating costs and high treatment efficiency. It has a high degree of modular integration, making it easy to achieve intelligent operation and management. It has good operational intelligence and process adaptability, and is suitable for flexible deployment and iterative upgrades of water quality improvement projects of different scales. Attached Figure Description

[0025] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0026] In the attached diagram:

[0027] Figure 1 This is a schematic cross-sectional view of the present invention.

[0028] Figure 2 This is a top view of the cross-section of the water inlet pipe in this utility model;

[0029] Figure 3 This is a top view of the cross-section of the filter plate in this utility model;

[0030] Figure 4 This is a modular design drawing of the present utility model.

[0031] In the diagram: 1. Primary reaction tank; 2. Secondary reaction tank; 3. Filter plate; 4. Coke lifter; 5. Vent 1; 6. Inlet; 7. Outlet; 8. Overflow port; 9. Activated coke packing 1; 10. Inlet pipe; 11. Outlet pipe; 12. Vent pipe; 13. Vent 2; 14. Air inlet pipe; 15. Overflow pipe; 16. Composite activated coke packing 2; 17. Long-handled filter head. Detailed Implementation

[0032] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0033] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the utility model. They are merely used to distinguish components or operations described using the same technical terms, and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions and features of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, such a combination should be considered non-existent and not within the scope of protection claimed by this utility model.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] Please see Figures 1-4 This utility model provides a technical solution, including: a primary reaction tank 1, a secondary reaction tank 2, a filter plate 3, and a coke lifter 4. The primary reaction tank 1, the secondary reaction tank 2, and the coke lifter 4 are arranged coaxially, and the bottom of the primary reaction tank 1 is completely closed. After passing through the filter plate 3 located at the bottom of the secondary reaction tank 2, it sits at the bottom of the secondary reaction tank 2. The lower part of the primary reaction tank 1 is provided with a vent 5. The tank wall of the secondary reaction tank 2 is provided with a water inlet 6, a water outlet 7, an overflow outlet 8, and a second vent 13.

[0036] The coke lifter 4 is arranged in the primary reaction tank 1, which is also filled with activated coke packing material 9. The coke lifter 4 can realize the four-in-one process of coke feeding, water distribution, backwashing and coke lifting. The primary reaction tank 1, the secondary reaction tank 2 and the upper surface of the filter plate 3 are filled with composite activated coke packing material 16, which is rich in denitrifying and denitrifying sulfur bacteria. The filter plate 3 is equipped with an adjustable long-handled filter head 17. The water inlet pipe 10 passes through the water inlet 6 and connects the water inlet of the coke lifter 4 to the water outlet pipe of the secondary sedimentation tank or other mud-water separation water production facility in the front-end treatment process. The water outlet pipe 11 connects the water outlet 7 to the water inlet pipe of the disinfection tank or other deep treatment facility. The overflow pipe 15 connects the overflow port 8 to the plant drainage network. One end of the vent pipe 12 connects the vent port 5 and the vent port 13 in series, and the other end connects to the plant drainage network. Valves are provided on the water inlet pipe 10, the water outlet pipe 11 and the vent pipe 12.

[0037] Furthermore, it also includes an air inlet pipe 14, one end of which is connected to the water outlet pipe 11 via a tee, and the other end is connected to the fan outlet. The air inlet pipe 14 is equipped with a check valve and an air inlet valve.

[0038] Furthermore, multiple processing units can be integrated into a modular design.

[0039] Preferably, the coke lifter 4 can be referenced from the company's existing patent: CN119551756B A coke washing method, device and control system for adsorption wastewater treatment.

[0040] The working principle and beneficial effects of the above scheme are as follows: Figure 4 The present invention is a deep processing package integrating various processing units, which can achieve the following processes and processing effects:

[0041] Carbon removal process: The reclaimed water requiring deep treatment is fed into the coke lifter 4 of each unit through the inlet pipe 10 of each unit. After flowing through the water distributor of each coke lifter 4, it enters the bottom of the primary reaction tank 1 evenly, and then passes upward through the activated coke packing 9. Under the adsorption of the activated coke particles, the residual COD is removed, and the carbon removal process is completed.

[0042] Denitrification process: The reclaimed water after carbon removal treatment enters the upper part of each secondary reaction tank 2 from the top of the primary reaction tank 1 of each unit in the form of a waterfall, and passes downward through the composite activated coke packing 16. Under the action of denitrifying and denitrifying sulfur bacteria, the residual total nitrogen can be removed. The reclaimed water that has completed the denitrification process enters the area where the lower end face of each filter plate 3 is located through the radial slit of the long-handled filter head 17, and is discharged to the disinfection tank or other water treatment facilities through each outlet pipe 11.

[0043] In this invention, through automatic control logic coordinated with the coke lifter 4, multi-stage linkage control of the entire process of carbon removal, denitrification, stirring, and water effluent is realized. It takes into account both time control and water quality feedback dual-channel triggering mechanism, and has good process adaptability and operational intelligence. When the COD index of the effluent exceeds a certain range, the inlet pipe 10 and outlet pipe 11 of a certain unit can be closed, and the coke lifter 4 can realize the coke lifting, backwashing offline or online, coke feeding, and water distribution.

[0044] When the operation reaches a certain time, or when the nitrate nitrogen index in the effluent exceeds the set range, close the valves on the inlet pipe 10 and outlet pipe 11 of one or more units, open the valves on the air inlet pipe 14 of these units, and the air flows through each outlet pipe 11 into the space at the lower end of the filter plate 3, and then through the radial slit of the long-handled filter head 17 into each composite activated coke packing 16, generating a stirring and washing effect to prevent the composite activated coke packing 16 from caking. As the air enters, the liquid level in each secondary reaction tank 2 rises, and the liquid exceeding each overflow port 8 is discharged into the plant drainage system through each overflow pipe 15.

[0045] When a unit or system needs maintenance or is shut down, the valves on the inlet pipe 10 and outlet pipe 11 of that unit can be closed, and the valve on the vent pipe 12 can be opened. The regenerated water in the primary reaction tank 1 and the secondary reaction tank 2 can be discharged to the plant's drainage network at the same time. The liquid levels in the two tanks drop at the same height, thereby preventing deformation or damage to the structure of the primary reaction tank 1 and improving the overall operational safety and maintenance reliability of the system.

[0046] The main advantages and features of this utility model are: simple unit structure, reasonable investment, the primary reaction tank can be integrally formed using lightweight and corrosion-resistant materials and is easy to install, nitrification and denitrification do not require the addition of carbon source, low operating cost and high treatment efficiency, high degree of modular integration, easy to realize intelligent operation and management, good operational intelligence and process adaptability, and suitable for flexible deployment and iterative upgrades of different scales and water quality improvement projects.

[0047] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A composite activated coke decarbonization and denitrification treatment system, characterized in that, include: A primary reaction tank (1), a secondary reaction tank (2), and a coke lifter (4) are arranged in a coaxial nested configuration; The first-stage reaction tank (1) is closed at the bottom and vertically passes through the filter plate (3), and is located at the bottom of the second-stage reaction tank (2); The filter plate (3) is fixedly installed on the lower inner wall of the secondary reaction tank (2), dividing the secondary reaction tank into upper and lower areas.

2. The composite activated coke decarbonization and denitrification treatment system as described in claim 1, characterized in that: The lower part of the primary reaction tank (1) is provided with an air vent (5); The outer wall of the secondary reaction tank (2) is provided with an inlet (6), an outlet (7), an overflow outlet (8), and a vent outlet (13).

3. The composite activated coke decarbonization and denitrification treatment system as described in claim 1, characterized in that: The filter plate (3) is equipped with several sets of adjustable long-handled filter heads (17), and the long-handled filter heads (17) are provided with filter slits in the radial direction.

4. The composite activated coke decarbonization and denitrification treatment system as described in claim 1, characterized in that: The coke lifter (4) is located inside the primary reaction tank (1) and integrates coke feeding, water distribution, backwashing and coke lifting functions; The primary reaction tank (1) is filled with activated coke packing material (9).

5. The composite activated coke decarbonization and denitrification treatment system as described in claim 1, characterized in that: The outer wall of the primary reaction tank (1) and the upper end face of the filter plate (3) are filled with composite activated coke packing material II (16); The composite activated coke packing material II (16) is used to load denitrifying and denitrifying thiobacterial community.

6. The composite activated coke decarbonization and denitrification treatment system as described in claim 2, characterized in that: The inlet pipe (10) passes through the inlet (6) and connects to the inlet of the coke lifter (4) and the outlet pipe of the secondary sedimentation tank or other mud-water separation facility; Water outlet pipe (11) connects the water outlet (7) to the water inlet pipe of the disinfection pool; Overflow pipe (15) connects the overflow port (8) to the plant drainage network; The vent pipe (12) is connected in series with the first vent (5) and the second vent (13), and the other end is connected to the factory area drainage network.

7. The composite activated coke decarbonization and denitrification treatment system as described in claim 6, characterized in that: Control valves are installed in the inlet pipe (10), outlet pipe (11), and vent pipe (12).

8. The composite activated coke decarbonization and denitrification treatment system as described in claim 6, characterized in that: It also includes an air inlet pipe (14), one end of which is connected to a water outlet pipe (11) via a tee, and the other end of which is connected to a fan; The intake pipe (14) is equipped with a check valve and an intake valve.

9. The composite activated coke decarbonization and denitrification treatment system as described in claim 1, characterized in that: The primary reaction tank (1) is made of lightweight and corrosion-resistant materials, including polyvinyl chloride, polyethylene, polypropylene or polytetrafluoroethylene.

10. The composite activated coke decarbonization and denitrification treatment system as described in claim 1, characterized in that: Multiple processing units are connected in parallel to form a modular integrated device.

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