Method for treating high-ammonia-nitrogen wastewater through anaerobic ammonia oxidation

Abstract

The invention discloses a treatment method for treating high-ammonia-nitrogen wastewater through anaerobic ammonia oxidation, belongs to the technical field of wastewater purification, and aims at solving the problems that in the prior art, the cultivation time of anaerobic ammonia oxidation bacteria is long, anaerobic ammonia oxidation sludge cannot be self-repaired when being used for treating wastewater, and the anaerobic ammonia oxidation sludge cannot be self-repaired when being used for biodegrading the high-ammonia-nitrogen-content wastewater. In order to solve the technical problem that the long-acting removal effect of ammonia nitrogen in wastewater is poor due to the fact that the concentration of anaerobic ammonium oxidation bacteria is reduced because the anaerobic ammonium oxidation bacteria in activated sludge are easily adhered to a filler, the invention optimizes the combination of the activated sludge and then is matched with a wastewater reactor, so that not only can ammonia nitrogen impurities in the wastewater be effectively removed, but also the long-acting removal effect of ammonia nitrogen in the wastewater is improved. The activity of the activated sludge can be maintained, and the long-acting anaerobic ammonia oxidation treatment effect on the high-ammonia-nitrogen wastewater is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater purification, and in particular to a method for treating high-ammonia nitrogen wastewater by anaerobic ammonia oxidation. Background Art

[0002] Ammonia nitrogen refers to the free ammonia (NH3) and ammonium ions (NH4 + ) in the form of combined nitrogen. Ammonia nitrogen is one of the nutrients in water bodies, but too high ammonia nitrogen content will lead to eutrophication of water, affecting water quality and ecological environment. Ammonia nitrogen is also one of the main oxygen-consuming pollutants in water bodies, which is toxic to fish and certain aquatic organisms. In addition, ammonia nitrogen in water can also be converted into nitrite under certain conditions. Long-term drinking of water containing nitrite will have adverse effects on human health.

[0003] With the acceleration of industrialization and the improvement of urbanization, the discharge of high-ammonia nitrogen wastewater is becoming increasingly serious. This type of wastewater mainly comes from agriculture, chemical industry, pharmaceutical industry, food processing and other industries. Its high concentration of ammonia nitrogen not only causes serious pollution to the environment, but also increases the difficulty and cost of wastewater treatment.

[0004] Anaerobic ammonium oxidation is a technology that uses anaerobic ammonium oxidation sludge containing anaerobic bacteria to oxidize ammonia nitrogen into nitrite or nitrogen gas. It has the advantages of thorough removal of ammonia nitrogen, high treatment efficiency, and low energy consumption. The anaerobic ammonium oxidation bacteria in the anaerobic ammonium oxidation sludge will gradually age with the increase of operating time, resulting in reduced activity and affecting the ammonia nitrogen oxidation degradation treatment effect. In addition, in order to ensure that the activated sludge and wastewater are fully mixed and contacted, bottom aeration is required to promote the mixing of activated sludge and wastewater during biological oxidation and degradation of wastewater. Aeration will increase the oxygen concentration in the wastewater. The increased dissolved oxygen concentration in the wastewater will inhibit anaerobic ammonium oxidation. The growth and activity of bacteria, while the reproduction and regeneration time of anaerobic ammonium oxidizing bacteria is relatively long. When treating wastewater, anaerobic ammonium oxidizing sludge cannot reproduce and repair itself, resulting in the need to frequently supplement or replace activated sludge when using anaerobic ammonium oxidizing sludge to treat wastewater. Especially for wastewater with high ammonia nitrogen content, a large amount of degradation products will be produced during biodegradation. These degradation products will coat the activated sludge products and mix them with the filler, causing the content of anaerobic ammonium oxidizing bacteria in the activated sludge to drop sharply, and the ammonia nitrogen removal effect in the wastewater will be rapidly weakened. The ammonia nitrogen removal rate in high ammonia nitrogen wastewater needs to be further improved.

[0005] In view of the technical defects in this aspect, a solution is now proposed. Summary of the invention

[0006] The object of the present invention is to provide a method for treating high-ammonia nitrogen wastewater by anaerobic ammonia oxidation, which is used to solve the technical problems in the prior art that the cultivation time of anaerobic ammonia oxidizing bacteria is long, the anaerobic ammonia oxidizing sludge cannot be self-repaired when treating wastewater, and a large amount of degradation products are generated when the wastewater with high ammonia nitrogen content is biodegraded, which will coat the activated sludge product and mix it with the filler, resulting in a decrease in the content of anaerobic ammonia oxidizing bacteria microorganisms in the activated sludge, resulting in poor long-term removal of ammonia nitrogen in the wastewater.

[0007] The purpose of the present invention can be achieved by the following technical scheme: A method for treating high-ammonia nitrogen wastewater by anaerobic ammonia oxidation, comprising the following steps:

[0008] S1, placing the activated sludge inside the storage bin 1 and storage bin 2 of the wastewater reactor;

[0009] S2. The high-ammonia nitrogen wastewater is transported from the water inlet pipe to the tank of the wastewater reactor. The wastewater overflows upward through the connecting ring in turn to fill the tank. The brake motor drives the vertical axis to rotate clockwise, driving the multiple baffle plates on the storage bin 1 to rotate 90°, and the horizontal section of the uniform distribution plate is located at the top of the storage bin 1.

[0010] S3, connect the nitrogen pipe with multiple air pipes, and after the nitrogen enters the air chamber, it is transported to the interior of the storage bin 1 for aeration for 30-60 seconds to evenly mix the activated sludge, filler and wastewater, and then leave it to stand for 8-10 hours;

[0011] S4, introducing high ammonia nitrogen wastewater into the tank body so that the wastewater in the tank body flows out from the overflow pipe, and at the same time detecting the ammonia nitrogen content of the wastewater overflowing from the overflow pipe;

[0012] S5. After working continuously for 24-30 hours, the brake motor drives the vertical axis to rotate counterclockwise, driving the multiple baffle plates on the storage bin 2 to rotate 90 degrees, and the multiple baffle plates on the storage bin 1 are turned over and closed, so that the horizontal section of the uniform distribution plate is located at the top of the storage bin 2. While rotating, the multiple fixed rods 1 and the multiple fixed rods 2 installed on the top of the uniform distribution plate move relative to each other, so as to self-clean the polypropylene filler;

[0013] S6. After working continuously for 72-90 hours, open the valves of the sewage pipe from top to bottom in sequence to discharge the sludge on the uniform distribution plate.

[0014] Furthermore, the activated sludge consists of nitrification sludge and anaerobic ammonium oxidation sludge in a weight ratio of 1:4.

[0015] Furthermore, the wastewater reactor includes a tank body, a water inlet pipe is installed at the bottom of one side of the tank body, an exhaust port is provided on the top of the tank body, an overflow pipe is installed on the top of one side of the tank body, a plurality of horizontally arranged material receiving plates are fixedly installed inside the tank body, and a connecting ring corresponding to the plurality of material receiving plates is installed on the outside of the tank body. A plurality of holes connected with the connecting rings are opened on the tank body, and the plurality of holes are respectively located at the top and bottom of the material receiving plates, a material receiving chamber is provided on the top of the material receiving plate coaxially arranged therewith, a partition plate which divides the groove into storage bin one and storage bin two is fixedly installed on the inner side of the material receiving chamber, a material blocking assembly is installed on the top of the storage bin one and the storage bin two, a uniform distribution plate is rotatably installed on the top of the plurality of material receiving plates, and a filling assembly is provided on the top of the uniform distribution plate.

[0016] Furthermore, the inner wall of the bottom of the material holding plate is provided with two air chambers respectively corresponding to the storage bin one and the storage bin two, and the tank body is provided with air pipes respectively connected to the multiple air chambers.

[0017] Furthermore, the material baffle assembly includes a plurality of material baffle plates, which are vertically arranged and rotatably connected to the partition plate, and two adjacent material baffle plates are overlapped front to back, and an installation cavity is provided on the inner side of the partition plate, and two chains of annular structure are installed on the inner side of the installation cavity, and a plurality of sprockets are installed on the inner side of the two chains, wherein the sprockets are arranged corresponding to the plurality of material baffle plates, and the filler assembly also includes a driving mechanism for driving the two chains to rotate.

[0018] Furthermore, the driving mechanism includes a vertical shaft rotatably installed at the bottom center of the tank body, the top of the vertical shaft passes through a plurality of mounting cavities and extends to the top of the material containing plate, and a plurality of the uniformly distributed plates are fixedly sleeved on the outside of the vertical shaft, and an outer section of the vertical shaft located on the inner side of the mounting cavity is fixedly sleeved with a bevel gear 1, and two bevel gears 2 meshing with the bevel gear 1 are installed on the outside of the bevel gear 1, and the two bevel gears 2 are respectively connected to the outer wall of a sprocket in the two chains through ratchets. The driving mechanism also includes a brake motor installed at the bottom of the tank body for driving the vertical shaft to rotate.

[0019] Furthermore, the uniform distribution plate includes a horizontal section and an inclined section, the horizontal section is provided with a plurality of parallel trapezoidal grooves, the tips of the trapezoidal grooves are set downward, the inclined section is provided with a plurality of conical holes, the tips of the conical holes are set upward, and the outside of the tank body is installed with sewage pipes corresponding to the plurality of uniform distribution plates.

[0020] Furthermore, the filler assembly includes a perforated plate horizontally arranged on the top of the uniform distribution plate, a plurality of fixed rods 1 are rotatably installed on the top of the uniform distribution plate, a plurality of fixed rods 2 are fixedly installed on the bottom of the perforated plate, the fixed rods 1 and 2 are both vertically arranged, and polypropylene fillers are installed on the fixed rods 1 and 2.

[0021] The present invention has the following beneficial effects:

[0022] 1. The anaerobic ammonia oxidation method for treating high-ammonia nitrogen wastewater of the present invention realizes the zoning treatment of high-ammonia nitrogen wastewater by optimizing the composition structure of the wastewater reactor and the composition of the activated sludge, ensures that the activated sludge is in full contact with the high-ammonia nitrogen wastewater, reduces the ammonia nitrogen content in the wastewater, and stores the activated sludge separately, keeps one group of activated sludge in the anaerobic ammonia oxidation of the wastewater while the other group of activated sludge is self-reproducing and repairing, so that the activated sludge always maintains good anaerobic ammonia oxidation activity. By optimizing the composition of the activated sludge, the long-term stability of the anaerobic ammonia oxidation activity of the activated sludge can be maintained, and a long-term ammonia nitrogen degradation effect can be achieved.

[0023] 2. The anaerobic ammonia oxidation method for treating high-ammonia nitrogen wastewater of the present invention divides the tank body into multiple relatively independent anaerobic ammonia oxidation treatment zones by means of a plurality of material containing plates. The multiple anaerobic ammonia oxidation treatment zones have little impact on each other, thereby realizing the zoning treatment of high-ammonia nitrogen wastewater. The combination of the anaerobic ammonia oxidation method with polypropylene filler and aeration avoids the problems of fast activated sludge sedimentation and poor activated sludge oxidation and degradation effect of ammonia nitrogen in wastewater in the integrated structure of the traditional integral reactor, thereby achieving the effect of quickly reducing the ammonia nitrogen content in the wastewater.

[0024] 3. The anaerobic ammonia oxidation method for treating high-ammonia nitrogen wastewater of the present invention cooperates with the uniform distribution plate, the fixed rod one, the fixed rod two and the polypropylene filler, so that during aeration, the activated sludge stored in the storage bin one or the storage bin two can be transported upward for aeration to avoid the sludge from floating up alone in the vertical direction, resulting in uneven distribution of the activated sludge in the wastewater. In addition, by optimizing the structure of the uniform distribution plate, the sunken sludge can be guided to gather along its inclined surface to the horizontal section, which is convenient for sewage treatment of the sludge. The trapezoidal groove arranged on the horizontal section guides the sludge to gather in the storage bin, and the sludge is automatically stacked and stored. The storage bin and the baffle plate cooperate with each other to form a relatively closed chamber, and the exhaust gas has the effect of airtight isolation, which promotes the free reproduction and repair of the activated sludge in an anaerobic environment, provides the activated sludge with self-repair time, so that the activated sludge always maintains good anaerobic ammonia oxidation activity, and improves the removal effect of ammonia nitrogen in the wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the wastewater reactor in the present invention;

[0027] Figure 2 It is a schematic diagram of the front cross-sectional structure of the wastewater reactor in the present invention;

[0028] Figure 3 It is a structural schematic diagram of the material holding plate and the uniform distribution plate in the present invention;

[0029] Figure 4 It is a structural schematic diagram of the uniform distribution plate in the present invention;

[0030] Figure 5 It is a schematic diagram of the unfolded structure of the material holding plate in the present invention;

[0031] Figure 6 For the present invention Figure 5 The enlarged structural diagram at A in the middle;

[0032] Figure 7 It is a schematic diagram of the structure of the sprocket, bevel gear 1 and bevel gear 2 in the present invention.

[0033] In the figure: 100, tank body; 101, water inlet pipe; 102, exhaust port; 103, overflow pipe; 104, connecting ring; 105, sewage pipe; 106, air pipe; 200, material holding plate; 201, partition plate; 202, storage bin one; 203, storage bin two; 204, material blocking plate; 205, sprocket; 206, chain; 207, vertical axis; 208, bevel gear one; 209, bevel gear two; 210, brake motor; 300, uniform distribution plate; 3001, horizontal section; 3002, inclined section; 3003, trapezoidal groove; 3004, tapered hole; 301, orifice plate; 302, fixing rod one; 303, fixing rod two; 304, polypropylene filler. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In this application, the nitrified sludge was selected from Henan Kunze Water Treatment Co., Ltd.;

[0036] The anaerobic ammonium oxidation sludge is granular, model LXHJ70, selected from Shandong Luxing Environmental Protection Technology Co., Ltd.

[0037] Example 1: Please refer to Figure 1 , Figure 2 , Figure 6 and Figure 7 A wastewater reactor for treating high-ammonia nitrogen wastewater by anaerobic ammonia oxidation in this embodiment includes a tank body 100, a water inlet pipe 101 is installed at the bottom of one side of the tank body 100, an exhaust port 102 is provided at the top of the tank body 100, an overflow pipe 103 is installed at the top of one side of the tank body 100, a plurality of horizontally arranged material holding plates 200 are fixedly installed inside the tank body 100, and connecting rings 104 corresponding to the plurality of material holding plates 200 are installed outside the tank body 100, a plurality of holes connected to the connecting rings 104 are opened on the tank body 100, and the plurality of holes are respectively located at the top and bottom of the material holding plates 200.

[0038] A plurality of material containing plates 200 divide the tank body 100 into a plurality of relatively independent anaerobic ammonium oxidation treatment areas. When the high-ammonia nitrogen wastewater enters the tank body 100 for anaerobic ammonium oxidation treatment, the wastewater enters the interior of the connecting ring 104 through the holes connected to the connecting ring 104, and is then transported upward from the holes to achieve bottom-up transportation, thereby treating the high-ammonia nitrogen wastewater according to a gradient.

[0039] A material holding chamber is provided on the top of the material holding plate 200 and is arranged coaxially therewith. A partition plate 201 is fixedly installed on the inner side of the material holding chamber, which divides the groove into a storage bin 1 202 and a storage bin 2 203. A plurality of baffle plates 204 are installed on the top of the storage bin 1 202 and the storage bin 2 203. The baffle plates 204 are vertically arranged with the partition plate 201 and are rotatably connected with the inner wall of the storage bin. A coil spring is installed at one end of the baffle plate 204 away from the partition plate 201, so that the baffle plate 204 generates accumulated force after being turned over, thereby realizing the automatic closing of multiple baffle plates 204. Two adjacent baffle plates 204 are overlapped front and back to form a closed shielding at the top of the storage bin, thereby forming a relatively closed activated sludge storage chamber.

[0040] An installation cavity is provided on the inner side of the partition plate 201, and two ring-shaped chains 206 are installed on the inner side of the installation cavity. Several sprockets 205 are installed on the inner sides of the two chains 206. The several sprockets 205 are arranged corresponding to the several baffle plates 204, so that the sprockets 205 drive the baffle plates 204 to rotate synchronously while rotating. The several sprockets 205 located between the chains 206 are all engaged with the chain grooves on the chains 206, so that when one of the sprockets 205 rotates, it drives the other sprockets 205 to rotate synchronously.

[0041] A vertical shaft 207 is rotatably installed at the bottom center of the tank body 100, and the top of the vertical shaft 207 passes through a number of installation cavities and extends to the top of the material holding plate 200, and a number of uniform distribution plates 300 are fixedly sleeved on the outside of the vertical shaft 207, and a section of the outer part of the vertical shaft 207 located on the inner side of the installation cavity is fixedly sleeved with a bevel gear 1 208, and two bevel gears 209 meshing with the bevel gear 1 208 are installed on the outside, and the two bevel gears 209 are respectively connected to the outer wall of a sprocket 205 in the two chains 206 through ratchets. The driving mechanism also includes a brake motor 210 installed at the bottom of the tank body 100 for driving the vertical shaft 207 to rotate.

[0042] The self-locking function of the brake motor 210 after stopping rotation is utilized to prevent the vertical shaft 207 from rotating. The two ratchets rotate in opposite directions. When the bevel gear 209 rotates, the two bevel gears 1 208 are driven to rotate synchronously. However, due to the one-way transmission of the ratchet, only the sprocket 205 on one side can be driven to rotate. As a result, when the brake motor 210 drives the vertical shaft 207 to rotate, only a group of material baffle plates 204 on the storage bin 1 202 or the storage bin 2 203 can be driven to deflect and accumulate force. When the brake motor 210 drives the vertical shaft 207 to rotate in the opposite direction, under the action of the coil spring, this group of material baffle plates 204 is closed and the other group of material baffle plates 204 is opened.

[0043] Storage bin 1 202 and storage bin 2 203 serve as storage chambers for activated sludge. The two groups of activated sludge are used alternately to promote the self-repair and reproduction of active bacteria in the activated sludge, thereby improving the activity of the activated sludge and the service life of the activated sludge.

[0044] Example 2: Please refer to Figure 1-5 In the present embodiment, a wastewater reactor for treating high-ammonia nitrogen wastewater by anaerobic ammonia oxidation is provided. A uniformly distributed plate 300 is rotatably installed on the top of several material holding plates 200. The uniformly distributed plate 300 includes a horizontal section 3001 and an inclined section 3002. The horizontal section 3001 is provided with several parallel trapezoidal grooves 3003, and the tips of the trapezoidal grooves 3003 are arranged downward. The inclined section 3002 is provided with several tapered holes 3004, and the tips of the tapered holes 3004 are arranged upward. The bottom inner wall of the material holding plate 200 is provided with two air chambers respectively arranged corresponding to the storage bin 1 202 and the storage bin 2 203. The air chamber is connected to the storage bin 1 202 or the storage bin 2 203 through an air outlet one-way pipe. The tank body 100 is provided with air pipes 106 respectively connected to the multiple air chambers.

[0045] One end of the air pipe 106 located outside the tank body 100 is connected to the nitrogen pipe. The high-pressure nitrogen enters the inner side of the air chamber through the air pipe 106, and is then transported to the inner side of the storage bin 1 202 or the storage bin 2 203 through the air outlet one-way pipe, so as to aerate the activated sludge stored in the storage bin 1 202 or the storage bin 2 203, thereby promoting uniform mixing of the activated sludge and the wastewater. The inclined section 3002 arranged on the uniform distribution plate 300 can promote the uniform distribution flow of the activated sludge from bottom to top accompanied by aeration during aeration. By changing the narrow end openings of the trapezoidal groove 3003 and the conical hole 3004, the settled sludge can fall into the storage bin 1 202 or the storage bin 2 203 with the baffle plate 204 opened.

[0046] A sewage pipe 105 corresponding to the multiple uniform distribution plates 300 is installed on the outside of the tank body 100. The bottom of the sewage pipe 105 is flush with the top of the horizontal section of the uniform distribution plate 300. A valve is installed on the sewage pipe 105. When the valve is opened, the sludge flows along with the wastewater and is discharged to the outside of the tank body 100, thereby realizing automatic sewage treatment of the sludge.

[0047] Example 3: Please refer to Figure 2 In the present embodiment, a wastewater reactor for treating high-ammonia nitrogen wastewater by anaerobic ammonia oxidation is provided. A horizontally arranged orifice plate 301 is fixed on the top of a uniform distribution plate 300. A plurality of fixed rods 1 302 are rotatably installed on the top of the uniform distribution plate 300. A plurality of fixed rods 2 303 are fixedly installed on the bottom of the orifice plate 301. The fixed rods 1 302 and the fixed rods 2 303 are both vertically arranged. Polypropylene fillers 304 are installed on the fixed rods 1 302 and the fixed rods 2 303. The uniform distribution plate 300 is fixedly sleeved on the outside of the vertical shaft 207.

[0048] The rotation of the vertical shaft 207 drives the uniform distribution plate 300 to rotate synchronously, so that the multiple fixed rods 302 located on the uniform distribution plate 300 rotate at the same time, the fixed rod 302 and the fixed rod 303 produce relative deflection, and the polypropylene filler 304 on the fixed rod 302 and the polypropylene filler 304 on the fixed rod 303 move relative to each other. The friction force generated by the relative movement between the polypropylene fillers 304 is used to clean the contaminated activated sludge on the polypropylene filler 304, thereby avoiding a large amount of sludge adhering to the polypropylene filler 304.

[0049] Example 4: Please refer to Figure 1-7 The present invention provides a method for treating high-ammonia nitrogen wastewater by anaerobic ammonium oxidation, comprising the following steps:

[0050] S1. Evenly mix the nitrification sludge and the anaerobic ammonium oxidation sludge in a weight ratio of 1:4 to obtain activated sludge, and place the activated sludge inside the storage bin 1 202 and the storage bin 2 203 of the wastewater reactor;

[0051] S2. The high-ammonia nitrogen wastewater is transported from the water inlet pipe 101 to the tank body 100 of the wastewater reactor. The wastewater overflows upward through the connecting ring 104 in sequence to fill the tank body 100. The brake motor 210 drives the vertical shaft 207 to rotate clockwise, driving the multiple baffle plates 204 on the storage bin 1 202 to rotate 90 degrees, and the horizontal section 3001 of the uniform distribution plate 300 is located at the top of the storage bin 1 202;

[0052] S3, connect the nitrogen pipe with multiple air pipes 106, the nitrogen pressure is 2.5MPa, the nitrogen enters the air chamber and is transported to the inside of the storage bin 202, aerated for 30s, the activated sludge, polypropylene filler 304 and wastewater are evenly mixed, the valve on the nitrogen pipe is closed, and the treatment is left to stand for 8h;

[0053] S4, introducing high ammonia nitrogen wastewater into the tank body 100, so that the wastewater in the tank body 100 flows out from the overflow pipe 103, and detecting the ammonia nitrogen content of the wastewater overflowing from the overflow pipe 103;

[0054] S5. After working continuously for 24 hours, the brake motor 210 drives the vertical shaft 207 to rotate counterclockwise, driving the multiple baffle plates 204 on the storage bin 203 to rotate 90 degrees. The multiple baffle plates 204 on the storage bin 1 202 are reversely flipped and closed under the action of the coil spring, so that the storage bin 1 202 forms a relatively closed chamber. At this time, the horizontal section 3001 of the uniform distribution plate 300 is located at the top of the storage bin 203. While rotating, the multiple fixed rods 1 302 and the multiple fixed rods 2 303 installed on the top of the uniform distribution plate 300 move relative to each other, so that the polypropylene filler 304 is self-cleaned;

[0055] S6. After working continuously for 72 hours, the valves of the sewage pipe 105 are opened from top to bottom in sequence to discharge the sludge on the uniform distribution plate 300.

[0056] Example 5: Please refer to Figure 1-7 The present invention provides a method for treating high-ammonia nitrogen wastewater by anaerobic ammonium oxidation, comprising the following steps:

[0057] S1. Evenly mix the nitrification sludge and the anaerobic ammonium oxidation sludge in a weight ratio of 1:4 to obtain activated sludge, and place the activated sludge inside the storage bin 1 202 and the storage bin 2 203 of the wastewater reactor;

[0058] S2. The high-ammonia nitrogen wastewater is transported from the water inlet pipe 101 to the tank body 100 of the wastewater reactor. The wastewater overflows upward through the connecting ring 104 in sequence to fill the tank body 100. The brake motor 210 drives the vertical shaft 207 to rotate clockwise, driving the multiple baffle plates 204 on the storage bin 1 202 to rotate 90 degrees, and the horizontal section 3001 of the uniform distribution plate 300 is located at the top of the storage bin 1 202;

[0059] S3, connect the nitrogen pipe with multiple air pipes 106, the nitrogen pressure is 3.0MPa, the nitrogen enters the air chamber and is transported to the interior of the storage bin 202, aerated for 45s, the activated sludge, polypropylene filler 304 and wastewater are evenly mixed, the valve on the nitrogen pipe is closed, and the treatment is left to stand for 9h;

[0060] S4, introducing high ammonia nitrogen wastewater into the tank body 100, so that the wastewater in the tank body 100 flows out from the overflow pipe 103, and detecting the ammonia nitrogen content of the wastewater overflowing from the overflow pipe 103;

[0061] S5. After working continuously for 27 hours, the brake motor 210 drives the vertical shaft 207 to rotate counterclockwise, driving the multiple baffle plates 204 on the storage bin 203 to rotate 90 degrees. The multiple baffle plates 204 on the storage bin 1 202 are reversely flipped and closed under the action of the coil spring, so that the storage bin 1 202 forms a relatively closed chamber. At this time, the horizontal section 3001 of the uniform distribution plate 300 is located at the top of the storage bin 203. While rotating, the multiple fixed rods 1 302 and the multiple fixed rods 2 303 installed on the top of the uniform distribution plate 300 move relative to each other, so that the polypropylene filler 304 is self-cleaned;

[0062] S6. After working continuously for 81 hours, the valves of the sewage pipe 105 are opened from top to bottom in sequence to discharge the sludge on the uniform distribution plate 300.

[0063] Example 6: Please refer to Figure 1-7 The present invention provides a method for treating high-ammonia nitrogen wastewater by anaerobic ammonium oxidation, comprising the following steps:

[0064] S1. Evenly mix the nitrification sludge and the anaerobic ammonium oxidation sludge in a weight ratio of 1:4 to obtain activated sludge, and place the activated sludge inside the storage bin 1 202 and the storage bin 2 203 of the wastewater reactor;

[0065] S2. The high-ammonia nitrogen wastewater is transported from the water inlet pipe 101 to the tank body 100 of the wastewater reactor. The wastewater overflows upward through the connecting ring 104 in sequence to fill the tank body 100. The brake motor 210 drives the vertical shaft 207 to rotate clockwise, driving the multiple baffle plates 204 on the storage bin 1 202 to rotate 90 degrees, and the horizontal section 3001 of the uniform distribution plate 300 is located at the top of the storage bin 1 202;

[0066] S3, connect the nitrogen pipe with multiple air pipes 106, the nitrogen pressure is 3.5MPa, the nitrogen enters the air chamber and is transported to the inside of the storage bin 202, aerated for 60s, the activated sludge, polypropylene filler 304 and wastewater are evenly mixed, the valve on the nitrogen pipe is closed, and the treatment is left to stand for 10h;

[0067] S4, introducing high ammonia nitrogen wastewater into the tank body 100, so that the wastewater in the tank body 100 flows out from the overflow pipe 103, and detecting the ammonia nitrogen content of the wastewater overflowing from the overflow pipe 103;

[0068] S5. After working continuously for 30 hours, the brake motor 210 drives the vertical shaft 207 to rotate counterclockwise, driving the multiple baffle plates 204 on the storage bin 203 to rotate 90 degrees. The multiple baffle plates 204 on the storage bin 1 202 are reversely flipped and closed under the action of the coil spring, so that the storage bin 1 202 forms a relatively closed chamber. At this time, the horizontal section 3001 of the uniform distribution plate 300 is located at the top of the storage bin 203. While rotating, the multiple fixed rods 1 302 and the multiple fixed rods 2 303 installed on the top of the uniform distribution plate 300 move relative to each other, so that the polypropylene filler 304 is self-cleaned;

[0069] S6. After working continuously for 90 hours, the valves of the sewage pipe 105 are opened from top to bottom in sequence to discharge the sludge on the uniform distribution plate 300.

[0070] Comparative Example 1

[0071] The difference between this comparative example and Example 6 is that the activated sludge is anaerobic ammonium oxidation sludge.

[0072] Comparative Example 2

[0073] The difference between this comparative example and Example 6 is that the activated sludge consists of nitrification sludge and anaerobic ammonium oxidation sludge in a weight ratio of 1:3.

[0074] Comparative Example 3

[0075] The difference between this comparative example and Example 6 is that the activated sludge consists of nitrification sludge and anaerobic ammonium oxidation sludge in a weight ratio of 1:1.

[0076] Performance Test:

[0077] In the initial operation and after 3 months of operation, the ammonia nitrogen content of the high ammonia nitrogen wastewater in step S2 and the overflow wastewater in step S4 were tested for Examples 4-6 and Comparative Examples 1-3, and the ammonia nitrogen content of the high ammonia nitrogen wastewater in step S2 and the overflow wastewater in step S4 were tested according to the formula The ammonia nitrogen removal rate in the wastewater was determined, where W0 is the ammonia nitrogen content in the high ammonia nitrogen wastewater in step S2, and W1 is the ammonia nitrogen content in the overflow wastewater in step S4. The specific test results are shown in Table 1 below:

[0078] Table 1- Ammonia nitrogen content detection data table

[0079]

[0080] Data Analysis:

[0081] A comparative analysis of the data in Table 1 above shows that the anaerobic ammonia oxidation method for treating high-ammonia nitrogen wastewater provided by the present invention can perform anaerobic ammonia oxidation treatment on high-ammonia nitrogen wastewater, and the ammonia nitrogen removal rate in the wastewater reaches 96.41%. Moreover, after 3 months of operation, the ammonia nitrogen removal rate in the wastewater reaches 94.00%, and various performance test data are better than the control example, indicating that the present invention optimizes the combination of activated sludge and matches it with a wastewater reactor, which can not only effectively remove ammonia nitrogen impurities in the wastewater, but also maintain the activity of the activated sludge, thereby achieving a long-term anaerobic ammonia oxidation treatment effect on high-ammonia nitrogen wastewater.

[0082] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

[0083] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0084] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A method for treating high-ammonia nitrogen wastewater by anaerobic ammonium oxidation, characterized in that: The following steps are involved: S1, placing the activated sludge inside the storage bin 1 (202) and the storage bin 2 (203) of the wastewater reactor; S2, transporting high-ammonia nitrogen wastewater from the water inlet pipe (101) to the inside of the tank body (100) of the wastewater reactor, the wastewater overflows upward through the connecting ring (104) in sequence, filling the tank body (100), and the brake motor (210) drives the vertical shaft (207) to rotate clockwise, driving the multiple baffle plates (204) on the storage bin one (202) to rotate 90 degrees, and making the horizontal section (3001) of the uniform distribution plate (300) located at the top of the storage bin one (202); S3, connecting the nitrogen pipe to the multiple air pipes (106), and after the nitrogen enters the air chamber, it is transported to the interior of the storage bin 1 (202), and aeration is performed for 30-60 seconds to evenly mix the activated sludge, filler and wastewater, and then left to stand for treatment for 8-10 hours; S4, introducing high-ammonia nitrogen wastewater into the tank body (100) so that the wastewater in the tank body (100) flows out from the overflow pipe (103), and at the same time detecting the ammonia nitrogen content of the wastewater overflowing from the overflow pipe (103); S5. After working continuously for 24-30 hours, the brake motor (210) drives the vertical shaft (207) to rotate counterclockwise, driving the multiple material baffle plates (204) on the storage bin 2 (203) to rotate 90 degrees, and the multiple material baffle plates (204) on the storage bin 1 (202) are turned over and closed, so that the horizontal section (3001) of the uniform distribution plate (300) is located at the top of the storage bin 2 (203). While rotating, the multiple fixed rods 1 (302) and the multiple fixed rods 2 (303) installed on the top of the uniform distribution plate (300) move relative to each other, so that the polypropylene filler (304) is self-cleaned; S6. After continuous operation for 72-90 hours, the valves of the sewage pipe (105) are opened in sequence from top to bottom to discharge the sludge on the uniform distribution plate (300).

2. The method for treating high-ammonia nitrogen wastewater by anaerobic ammonium oxidation according to claim 1, characterized in that: The activated sludge is composed of nitrification sludge and anaerobic ammonium oxidation sludge in a weight ratio of 1:

4.

3. The method for treating high-ammonia nitrogen wastewater by anaerobic ammonium oxidation according to claim 1, characterized in that: The wastewater reactor comprises a tank body (100), a water inlet pipe (101) is installed at the bottom of one side of the tank body (100), an exhaust port (102) is provided at the top of one side of the tank body (100), an overflow pipe (103) is installed at the top of one side of the tank body (100), a plurality of horizontally arranged material holding plates (200) are fixedly installed inside the tank body (100), a connecting ring (104) corresponding to the plurality of material holding plates (200) is installed outside the tank body (100), and a plurality of connecting rings (104) are provided on the tank body (100). ) are connected to each other, and the plurality of holes are respectively located at the top and the bottom of the material holding plate (200); the top of the material holding plate (200) is provided with a material holding chamber coaxially arranged therewith; a partition plate (201) is fixedly installed on the inner side of the material holding chamber for dividing the groove into storage bin one (202) and storage bin two (203); the tops of the storage bin one (202) and the storage bin two (203) are both provided with a material blocking assembly; the tops of a plurality of the material holding plates (200) are rotatably provided with a uniform distribution plate (300), and the top filling assembly of the uniform distribution plate (300) is provided.

4. The method for treating high-ammonia nitrogen wastewater by anaerobic ammonium oxidation according to claim 3, characterized in that: The bottom inner wall of the material holding plate (200) is provided with two air chambers respectively corresponding to the storage bin 1 (202) and the storage bin 2 (203), and the tank body (100) is provided with air pipes (106) respectively connected to the multiple air chambers.

5. The method for treating high-ammonia nitrogen wastewater by anaerobic ammonium oxidation according to claim 3, characterized in that: The material baffle assembly comprises a plurality of material baffle plates (204), the material baffle plates (204) being arranged vertically with the partition plate (201) and being rotatably connected thereto, two adjacent material baffle plates (204) being overlapped front to back, an installation cavity being provided on the inner side of the partition plate (201), two chains (206) of annular structure being installed on the inner side of the installation cavity, a plurality of sprocket wheels (205) being installed on the inner side of the two chains (206), wherein the sprocket wheels (205) are arranged corresponding to the plurality of material baffle plates (204), and the filler assembly further comprises a driving mechanism for driving the two chains (206) to rotate.

6. The method for treating high-ammonia nitrogen wastewater by anaerobic ammonium oxidation according to claim 4, characterized in that: The driving mechanism comprises a vertical shaft (207) rotatably mounted at the bottom center of the tank body (100), the top of the vertical shaft (207) passes through a plurality of mounting cavities and extends to the top of the material holding plate (200), a plurality of the uniform distribution plates (300) are fixedly sleeved on the outside of the vertical shaft (207), a section of the outside of the vertical shaft (207) located on the inner side of the mounting cavity is fixedly sleeved with a bevel gear 1 (208), two bevel gears 2 (209) meshing with the bevel gear 1 (208) are installed on the outside of the bevel gear 1 (208), the two bevel gears 2 (209) are respectively connected to the outer wall of a sprocket (205) in the two chains (206) through ratchets, and the driving mechanism also comprises a brake motor (210) mounted on the bottom of the tank body (100) for driving the vertical shaft (207) to rotate.

7. The method for treating high-ammonia nitrogen wastewater by anaerobic ammonium oxidation according to claim 3, characterized in that: The uniform distribution plate (300) comprises a horizontal section (3001) and an inclined section (3002); the horizontal section (3001) is provided with a plurality of trapezoidal grooves (3003) arranged in parallel, the tips of the trapezoidal grooves (3003) being arranged downward; the inclined section (3002) is provided with a plurality of conical holes (3004), the tips of the conical holes (3004) being arranged upward; and the tank body (100) is provided with sewage discharge pipes (105) arranged corresponding to the plurality of uniform distribution plates (300) installed on the outside.

8. The method for treating high-ammonia nitrogen wastewater by anaerobic ammonium oxidation according to claim 3, characterized in that: The packing assembly comprises a perforated plate (301) horizontally arranged on the top of the uniform distribution plate (300), a plurality of fixed rods (302) are rotatably mounted on the top of the uniform distribution plate (300), a plurality of fixed rods (303) are fixedly mounted on the bottom of the perforated plate (301), the fixed rods (302) and the fixed rods (303) are both vertically arranged, and polypropylene packing (304) is mounted on the fixed rods (302) and the fixed rods (303).

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