Denitrification reactor for high organic nitrogen wastewater

Abstract

The utility model relates to wastewater treatment technical field, and disclose a kind of high organic nitrogen wastewater denitrification treatment reactor, this one kind high organic nitrogen wastewater denitrification treatment reactor, including high organic nitrogen wastewater denitrification treatment reaction mechanism, the high organic nitrogen wastewater denitrification treatment reaction mechanism includes shell, the left side of the shell is connected with water inlet pipe, the right side of the shell is connected with water outlet pipe, and the outside of the water inlet pipe and the water outlet pipe is provided with flow control valve, the inner chamber of the shell is fixedly connected with first baffle, second baffle, third baffle and fourth baffle in proper order, by the unique design of two-stage A / O reaction tank, greatly extended denitrification reaction time, compared with traditional process and only rely on mixing blade to accelerate the existing technology of reagent fusion, the device can make denitrification reaction more sufficient, significantly improve the removal rate of total nitrogen in wastewater, ensure that wastewater is stably discharged up to standard.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a denitrification reaction device for high organic nitrogen wastewater. Background Technology

[0002] With the rapid development of industry, the discharge of high organic nitrogen wastewater is increasing day by day. If this type of wastewater is discharged directly without effective treatment, it will cause serious pollution to the environment. Traditional sewage treatment processes face many challenges when treating high organic nitrogen wastewater. Among them, the hydraulic retention time is too long, resulting in low treatment efficiency and often the problem of insufficient organic carbon source. This makes the treatment of high organic nitrogen wastewater difficult and costly. At the same time, it is difficult to effectively remove total nitrogen substances from the wastewater, which in turn makes it impossible for high organic nitrogen wastewater to meet the discharge standards stably.

[0003] Chinese Patent (Publication No.: CN 220034074 U) discloses a reactor for treating high ammonia nitrogen wastewater, relating to the field of wastewater treatment technology. The reactor includes a reactor body suitable for treating high ammonia nitrogen wastewater. The reactor body includes an outer shell, with inlets fixedly connected to both sides of the top of the shell. Support legs are fixedly installed around the bottom of the shell. A purification unit and a filtration unit are disposed inside the shell. The purification unit is rotatably connected to the inner walls on both sides of the shell, and the filtration unit is detachably installed on the bottom of the shell. This invention facilitates the pouring of wastewater and purification agents into the reactor by providing inlets. A drive motor drives a drive rod to rotate at a constant speed. When the drive rod rotates, it drives a rotating shaft, causing the stirring blades to rotate at a constant speed in the wastewater. The rotation of the stirring blades accelerates the mixing speed of the purification agents and wastewater, thereby achieving rapid purification of the wastewater. The aforementioned patent accelerates the fusion speed of the purifying agent and wastewater by rotating the stirring blades, thereby achieving rapid purification of the wastewater. However, this method only improves the agent mixing process and fails to fundamentally solve the key problems of long hydraulic retention time, insufficient organic carbon source, and difficulty in effectively removing total nitrogen in the treatment of high organic nitrogen wastewater.

[0004] Therefore, a reactor for denitrification treatment of high organic nitrogen wastewater is proposed. Utility Model Content

[0005] In view of this, the present invention provides a high organic nitrogen wastewater denitrification reactor to solve or alleviate the technical problems existing in the prior art, and at least provides a beneficial alternative.

[0006] The technical solution of this utility model is achieved as follows: a reactor for denitrification treatment of high organic nitrogen wastewater, comprising: A high-organic-nitrogen wastewater denitrification treatment reaction mechanism includes an outer shell. An inlet pipe is connected to the left side of the outer shell, and an outlet pipe is connected to the right side. Flow control valves are installed on the outer sides of both the inlet and outlet pipes. A first partition, a second partition, a third partition, and a fourth partition are sequentially fixedly connected to the inner cavity of the outer shell. A fifth partition is fixedly connected to the first, second, third, and fourth partitions within the inner cavity of the outer shell. The left side of the first partition is a primary anoxic tank, the left side of the second partition is a primary aerobic tank, the left side of the third partition is a secondary anoxic tank, the left side of the fourth partition is a secondary aerobic tank, the right side of the fourth partition is a sedimentation reaction tank, and the front side of the fifth partition is a water-isolated zone.

[0007] More preferably, water passage holes are provided on both the front and rear sides of the first partition, the second partition, the third partition and the fourth partition, and the position and size of the water passage holes can be set according to the flow requirements.

[0008] More preferably, it also includes an aeration mechanism, which includes an aerator fixedly connected to the end of the bottom of the sedimentation reaction tank. Both sides of the aerator are connected to a first aeration pipe. The bottom of the first aeration pipe is connected to a plurality of second aeration pipes that are equidistantly distributed and of the same size. The back side of the second aeration pipe is connected to a third aeration pipe, which penetrates the inner surface of the fifth partition and extends into the first aerobic tank and the secondary aerobic tank. The top of the third aeration pipe is connected to a plurality of aeration heads that are equidistantly distributed and of the same size.

[0009] More preferably, it also includes a stirring mechanism, which includes two drive wheels, respectively disposed on the front side of the outer shell and on the front side of the primary anoxic pool and the secondary anoxic pool. A stirring rod is fixedly connected to the back side of each drive wheel, and the stirring rod is disposed in the inner cavity of the primary anoxic pool and the secondary anoxic pool. A drive belt is sleeved on the inner side of each drive wheel, and a servo motor is fixedly connected to the front side of the drive wheel on the left side.

[0010] More preferably, it also includes a packing mechanism, of which there are two, respectively disposed above the first aerobic tank and the second aerobic tank. The packing mechanism includes a connecting plate, which is fixedly connected to the first partition, the second partition, the third partition and the fourth partition respectively. A cylinder is fixedly connected to the top of the connecting plate, and a lifting platform is fixedly connected to the telescopic end of the cylinder. A packing box is disposed inside the lifting platform, and rope-type denitrification packing is placed inside the packing box.

[0011] More preferably, the first partition, the second partition, the third partition, and the fourth partition are all provided with sliding grooves on their inner sides, and the outer side of the lifting platform is fixedly connected with a slider, and the slider is slidably connected to the inner side of the sliding groove.

[0012] More preferably, a return pipe is connected to the front side of the first aerobic tank, and a sludge return pump is connected to the right side of the return pipe, and the sludge return pump is connected to the front side of the sedimentation reaction tank.

[0013] More preferably, the outer shell and the first, second, third, fourth and fifth partitions are all made of corrosion-resistant material, namely 316L stainless steel.

[0014] The present invention has the following advantages due to the adoption of the above technical solution: I. This utility model, through its unique design of setting up a two-stage A / O reaction tank, greatly extends the denitrification reaction time. Compared with traditional processes and existing technologies that rely solely on stirring blades to accelerate reagent fusion, this device enables the denitrification reaction to proceed more fully, significantly improving the removal rate of total nitrogen in wastewater and ensuring that wastewater is discharged in a stable manner that meets standards.

[0015] Second, by setting up an aeration mechanism, this utility model can uniformly fill the first aerobic tank and the second aerobic tank with oxygen, which can ensure that the nitrifying bacteria are always in a suitable oxygen environment, significantly improve the conversion efficiency of ammonia nitrogen to nitrate nitrogen, provide sufficient substrate for subsequent denitrification reaction, and thus improve the overall denitrification effect.

[0016] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the front view of the main body structure of this utility model; Figure 2 This is a schematic cross-sectional view of the outer shell of this utility model; Figure 3 This is a front view schematic diagram of the aeration mechanism of this utility model; Figure 4 This is a schematic diagram of the aeration mechanism of this utility model in its disassembled state. Figure 5 This is a schematic diagram of the disassembled stirring mechanism of this utility model. Figure 6 This is a schematic diagram of the packing mechanism of this utility model in its disassembled state.

[0019] Figure reference numerals: 100, High organic nitrogen wastewater denitrification reaction mechanism; 101, Outer shell; 102, Inlet pipe; 103, Outlet pipe; 104, Flow control valve; 105, First baffle; 106, Second baffle; 107, Third baffle; 108, Fourth baffle; 109, Fifth baffle; 110, Primary anoxic tank; 111, Primary aerobic tank; 112, Secondary anoxic tank; 113, Secondary aerobic tank; 114, Sedimentation reaction tank; 115, Water-isolated zone; 116, Water passage hole; 117. Return pipe; 118. Sludge return pump; 200. Aeration mechanism; 201. Aerator; 202. First aeration pipe; 203. Second aeration pipe; 204. Third aeration pipe; 205. Aeration head; 300. Mixing mechanism; 301. Drive wheel; 302. Mixing rod; 303. Drive belt; 304. Servo motor; 400. Packing mechanism; 401. Connecting plate; 402. Cylinder; 403. Lifting platform; 404. Packing box; 405. Slide chute; 406. Sliding block. Detailed Implementation

[0020] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0021] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0022] Example 1 like Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, this embodiment of the present invention provides a reactor for denitrification treatment of high organic nitrogen wastewater, comprising: A high-organic-nitrogen wastewater denitrification treatment reaction mechanism 100 includes a housing 101. An inlet pipe 102 is connected to the left side of the housing 101, and an outlet pipe 103 is connected to the right side of the housing 101. Flow control valves 104 are installed on the outer sides of both the inlet pipe 102 and the outlet pipe 103. A first partition 105, a second partition 106, a third partition 107, and a fourth partition 108 are sequentially and fixedly connected to the inner cavity of the housing 101. The first partition 105, second partition 106, third partition 107, and fourth partition 108 are located and fixed within the inner cavity of the housing 101. The first partition 105 is connected to a fifth partition 109. The left side of the first partition 105 is a primary anoxic tank 110. The left side of the second partition 106 is a primary aerobic tank 111. The left side of the third partition 107 is a secondary anoxic tank 112. The left side of the fourth partition 108 is a secondary aerobic tank 113. The right side of the fourth partition 108 is a sedimentation reaction tank 114. The front side of the fifth partition 109 is a water-blocking zone 115. Water passage holes 116 are provided on both the front and rear sides of the first partition 105, the second partition 106, the third partition 107 and the fourth partition 108. The position and size of the water passage holes 116 can be set according to the flow requirements.

[0023] By setting up a unique two-stage A / O reaction tank, the denitrification reaction time is greatly extended. Compared with traditional processes and existing technologies that rely solely on stirring blades to accelerate reagent fusion, this device enables the denitrification reaction to proceed more fully, significantly improving the removal rate of total nitrogen in wastewater and ensuring that wastewater is discharged in a stable manner that meets standards.

[0024] Example 2 like Figure 3 and Figure 4 As shown, in one embodiment, an aeration mechanism 200 is also included. The aeration mechanism 200 includes an aerator 201, which is fixedly connected to the terminal at the bottom of the sedimentation reaction tank 114. Both sides of the aerator 201 are connected to a first aeration pipe 202. The bottom of the first aeration pipe 202 is connected to a plurality of second aeration pipes 203 that are equidistantly distributed and of the same size. The back side of the second aeration pipe 203 is connected to a third aeration pipe 204, which penetrates the inner surface of the fifth partition 109 and extends into the first aerobic tank 111 and the secondary aerobic tank 113. The top of the third aeration pipe 204 is connected to a plurality of aeration heads 205 that are equidistantly distributed and of the same size.

[0025] By setting up the aeration mechanism 200, oxygen can be evenly introduced into the first aerobic tank 111 and the second aerobic tank 113, ensuring that nitrifying bacteria are always in a suitable oxygen environment, significantly improving the conversion efficiency of ammonia nitrogen to nitrate nitrogen, providing sufficient substrate for subsequent denitrification reaction, and thus improving the overall denitrification effect.

[0026] Example 3 like Figure 2 Figure 5 and Figure 6 As shown, in one embodiment, the system further includes a stirring mechanism 300. The stirring mechanism 300 includes two drive wheels 301, respectively located on the front side of the outer shell 101 and on the front side of the primary anoxic tank 110 and the secondary anoxic tank 112. A stirring rod 302 is fixedly connected to the back side of each drive wheel 301, and the stirring rod 302 is located within the inner cavity of the primary anoxic tank 110 and the secondary anoxic tank 112. A drive belt 303 is sleeved on the inner side of each drive wheel 301. A servo motor 304 is fixedly connected to the front side of the drive wheel 301 on the left side. The system also includes two packing mechanisms 400, respectively located above the first aerobic tank 111 and the secondary aerobic tank 113. Each packing mechanism 400 includes a connecting plate 401, which is fixedly connected to a first partition 105, a second partition 106, a third partition 107, and a fourth partition 108. A cylinder 402 is fixedly connected to the top of the connecting plate 401. A lifting platform 403 is fixedly connected to the telescopic end of the cylinder 402. A stuffing box 404 is provided inside the lifting platform 403. Rope-type denitrification packing is placed inside the stuffing box 404. The first partition 105, the second partition 106, the third partition 107, and the fourth partition 108 all have sliding grooves 405 on their inner sides. Sliding blocks 406 are fixedly connected to the outer sides of the lifting platform 403. 6 is slidably connected to the inner side of the chute 405. The front side of the first aerobic tank 111 is connected to the return pipe 117. The right side of the return pipe 117 is connected to the sludge return pump 118, and the sludge return pump 118 is connected to the front side of the sedimentation reaction tank 114. The outer shell 101 and the first partition 105, the second partition 106, the third partition 107, the fourth partition 108 and the fifth partition 109 are all made of corrosion-resistant material, which is 316L stainless steel.

[0027] By setting up the stirring mechanism 300, wastewater, activated sludge, microorganisms, and oxygen can be fully mixed, further enhancing the reaction effect. By setting up the packing mechanism 400, the rope-type denitrification packing creates an ideal attachment and growth environment for activated sludge and microorganisms, successfully constructing a composite bioreactor. This measure significantly enhances the denitrification capacity of the system and is one of the key advantages that distinguishes this utility model from other similar devices. By setting up the chute 405 and the slider 406, the stability of the lifting platform 403 during lifting can be improved. By setting up the return pipe 117 and the sludge return pump 118, the settled sludge can be smoothly returned to the primary anoxic tank 110, realizing the efficient recycling of sludge. This design further improves the treatment efficiency of the entire reaction device. Compared with existing devices without this design, it can save more time and resources when treating the same amount of wastewater.

[0028] In operation, the wastewater to be treated enters the primary anoxic tank 110 through the inlet pipe 102. Under anoxic conditions, nitrate nitrogen in the wastewater undergoes denitrification under the action of denitrifying bacteria, using organic matter in the wastewater as a carbon source, converting nitrate nitrogen into nitrogen gas. Subsequently, the wastewater flows into the first aerobic tank 111, where the aeration mechanism 200 is activated, uniformly introducing oxygen into the wastewater through the aeration heads 205, maintaining the dissolved oxygen concentration in the first aerobic tank 111 within the suitable range of 2-3 mg / L for nitrifying bacteria. Ammonia nitrogen is efficiently oxidized to nitrate nitrogen under the action of nitrifying bacteria, while organic matter is further decomposed. Next, the wastewater sequentially enters the secondary anoxic tank 112 and the secondary aerobic tank 113. Under the action of the aeration mechanism 200 in the secondary anoxic tank 112, efficient denitrification and nitrification reactions occur again, further removing nitrogen pollutants. After two stages of A / O treatment... In the reaction, the nitrogen in the wastewater is fully treated. In the first aerobic tank 111 and the second aerobic tank 113, the added rope-shaped denitrification packing provides a place for activated sludge and microorganisms to attach and grow, forming a composite bioreactor and enhancing the denitrification capacity. Finally, the treated wastewater enters the sedimentation reaction tank 114 for sludge-water separation. The clear water after sedimentation is discharged through the effluent pipe 103, while the sludge is returned to the first anoxic tank 110 through the return pipe 117 and the sludge return pump 118 to continue participating in the reaction.

[0029] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A high organic nitrogen wastewater denitrification treatment reactor, characterized in that, include: A high organic nitrogen wastewater denitrification treatment reaction mechanism (100) includes a shell (101), an inlet pipe (102) connected to the left side of the shell (101), and an outlet pipe (103) connected to the right side of the shell (101). Flow control valves (104) are installed on the outer sides of both the inlet pipe (102) and the outlet pipe (103). A first partition (105), a second partition (106), a third partition (107), and a fourth partition (108) are sequentially fixedly connected within the inner cavity of the shell (101). The first partition (105), the second partition (106), the third partition (107), and the fourth partition (108) are... A fifth partition (109) is fixedly connected to the inner cavity of the outer shell (101) and to the second partition (106), the third partition (107) and the fourth partition (108). The left side of the first partition (105) is a primary anoxic tank (110), the left side of the second partition (106) is a primary aerobic tank (111), the left side of the third partition (107) is a secondary anoxic tank (112), the left side of the fourth partition (108) is a secondary aerobic tank (113), the right side of the fourth partition (108) is a sedimentation reaction tank (114), and the front side of the fifth partition (109) is a water-isolated zone (115).

2. The denitrification reactor for high organic nitrogen wastewater according to claim 1, characterized in that: The first partition (105), the second partition (106), the third partition (107) and the fourth partition (108) are provided with water passage holes (116) on both the front and rear sides, and the position and size of the water passage holes (116) can be set according to the flow requirements.

3. The denitrification reactor for high organic nitrogen wastewater according to claim 1, characterized in that: It also includes an aeration mechanism (200), which includes an aerator (201). The aerator (201) is fixedly connected to the end of the bottom of the sedimentation reaction tank (114). Both sides of the aerator (201) are connected to a first aeration pipe (202). The bottom of the first aeration pipe (202) is connected to a plurality of second aeration pipes (203) that are equally distributed and of the same size. The back side of the second aeration pipe (203) is connected to a third aeration pipe (204). The third aeration pipe (204) penetrates the inner surface of the fifth partition (109) and extends into the first aerobic tank (111) and the secondary aerobic tank (113). The top of the third aeration pipe (204) is connected to a plurality of aeration heads (205) that are equally distributed and of the same size.

4. The denitrification reactor for high organic nitrogen wastewater according to claim 1, characterized in that: It also includes a stirring mechanism (300), which includes a drive wheel (301). There are two drive wheels (301), which are respectively located on the front side of the outer shell (101) and on the front side of the primary anoxic pool (110) and the secondary anoxic pool (112). A stirring rod (302) is fixedly connected to the back side of each drive wheel (301), and the stirring rod (302) is located in the inner cavity of the primary anoxic pool (110) and the secondary anoxic pool (112). A drive belt (303) is sleeved on the inner side of the drive wheel (301), and a servo motor (304) is fixedly connected to the front side of the drive wheel (301) on the left side.

5. The denitrification reactor for high organic nitrogen wastewater according to claim 1, characterized in that: It also includes a packing mechanism (400), there are two packing mechanisms (400), which are respectively set above the first aerobic tank (111) and the second aerobic tank (113). The packing mechanism (400) includes a connecting plate (401), which is fixedly connected to the first partition (105), the second partition (106), the third partition (107) and the fourth partition (108) respectively. A cylinder (402) is fixedly connected to the top of the connecting plate (401), and a lifting platform (403) is fixedly connected to the telescopic end of the cylinder (402). A packing box (404) is provided on the inner side of the lifting platform (403), and rope-type denitrification packing is placed on the inner side of the packing box (404).

6. The denitrification reactor for high organic nitrogen wastewater according to claim 5, characterized in that: The first partition (105), the second partition (106), the third partition (107) and the fourth partition (108) are all provided with sliding grooves (405) on their inner sides. The outer side of the lifting platform (403) is fixedly connected with a slider (406), and the slider (406) is slidably connected to the inner side of the sliding groove (405).

7. The denitrification reactor for high organic nitrogen wastewater according to claim 1, characterized in that: The front side of the first aerobic tank (111) is connected to a return pipe (117), and the right side of the return pipe (117) is connected to a sludge return pump (118), and the sludge return pump (118) is connected to the front side of the sedimentation reaction tank (114).

8. The denitrification reactor for high organic nitrogen wastewater according to claim 1, characterized in that: The outer shell (101) and the first partition (105), second partition (106), third partition (107), fourth partition (108) and fifth partition (109) are all made of corrosion-resistant material, which is 316L stainless steel.

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