An integrated shortcut nitrification-anaerobic ammonium oxidation system and method for high-load nitrogen removal

Abstract

This application relates to the technical field of sewage treatment, and provides an integrated shortcut nitrification-anaerobic ammonium oxidation system and method for high-load nitrogen removal. The system includes a water inlet device; a shortcut nitrification-anaerobic ammonium oxidation main reactor; a rotating shaft device; a fixed crossbar; a first anaerobic ammonium oxidation unit; a second anaerobic ammonium oxidation unit; a shortcut nitrification unit; the rotating shaft device is configured to drive the fixed crossbar to rotate so that the first anaerobic ammonium oxidation unit or the second anaerobic ammonium oxidation unit approaches the water inlet injection pipe; the bottom end of the water inlet injection pipe is communicated with the water inlet device, and the water inlet device is configured to inject water flow into the first anaerobic ammonium oxidation unit or the second anaerobic ammonium oxidation unit through the water inlet injection pipe so that the first anaerobic ammonium oxidation unit or the second anaerobic ammonium oxidation unit rotates relative to the fixed crossbar. This application provides an integrated shortcut nitrification-anaerobic ammonium oxidation system and method for high-load nitrogen removal, and the system has good operation stability and high nitrogen removal efficiency.

Description

Technical Field

[0001] This application relates to sewage treatment technology. In particular, it relates to an integrated shortcut nitrification-anaerobic ammonium oxidation system and method for high-load nitrogen removal. Background Art

[0002] Anaerobic ammonium oxidation is a new nitrogen removal technology discovered in the sewage treatment process in recent years. It has a series of advantages such as no need to add organic carbon source, low sludge yield, and low operating cost, high treatment efficiency, and low operating cost, which has received extensive attention from researchers and has broad application prospects.

[0003] Currently, in conventional anaerobic ammonium oxidation reactors, the substrate concentration, temperature, pH value, and dissolved oxygen fluctuate greatly, and it is relatively difficult to form anaerobic ammonium oxidation granular sludge. There are also some limiting factors in the anaerobic ammonium oxidation process itself, such as poor total nitrogen removal efficiency and susceptibility to external environmental influences. In particular, the anaerobic ammonium oxidation bacteria in anaerobic ammonium oxidation granular sludge are autotrophic bacteria with low cell yield, long doubling time, and sensitivity to environmental conditions, resulting in slow growth of anaerobic ammonium oxidation bacteria, difficult stability maintenance and regeneration, poor stability of reactor operation, and low nitrogen removal efficiency. Summary of the Invention

[0004] This application provides an integrated shortcut nitrification-anaerobic ammonium oxidation system and method for high-load nitrogen removal, with good operation stability and high nitrogen removal efficiency of the system.

[0005] To achieve the above object, this application adopts the following technical solutions:

[0006] In a first aspect, this application provides an integrated shortcut nitrification-anaerobic ammonium oxidation system for high-load nitrogen removal, comprising:

[0007] An influent device;

[0008] A shortcut nitrification-anaerobic ammonium oxidation main reactor, the shortcut nitrification-anaerobic ammonium oxidation main reactor has an inner cavity, and an influent injection pipe is arranged at the lower part of the shortcut nitrification-anaerobic ammonium oxidation main reactor, and the extending direction of the influent injection pipe has an included angle with the horizontal plane and an included angle with the vertical direction;

[0009] A rotating shaft device, the rotating shaft device is located in the inner cavity;

[0010] A fixed cross bar, the fixed cross bar is connected with the rotating shaft device;

[0011] A first anaerobic ammonium oxidation unit, the first anaerobic ammonium oxidation unit is rotatably connected to the first end of the fixed cross bar along the extending direction, and an anaerobic ammonium oxidation area is arranged in the first anaerobic ammonium oxidation unit;

[0012] a second anaerobic ammonium oxidation unit, the second anaerobic ammonium oxidation unit is rotatably connected to the second end of the fixed cross bar along the extension direction, and an anaerobic ammonium oxidation zone is provided in the second anaerobic ammonium oxidation unit;

[0013] A short-cut nitrification unit is provided between the outer surfaces of the first anaerobic ammonium oxidation unit and the second anaerobic ammonium oxidation unit and the inner wall of the short-cut nitrification-anaerobic ammonium oxidation main reactor;

[0014] The rotating shaft device is configured to drive the fixed cross bar to rotate so that the first anaerobic ammonium oxidation unit or the second anaerobic ammonium oxidation unit is close to the water inlet injection pipe; the bottom end of the water inlet injection pipe is connected to the water inlet device, and the water inlet device is configured to spray water to the first anaerobic ammonium oxidation unit or the second anaerobic ammonium oxidation unit through the water inlet injection pipe so that the first anaerobic ammonium oxidation unit or the second anaerobic ammonium oxidation unit rotates relative to the fixed cross bar.

[0015] In some embodiments, the first anaerobic ammonium oxidation unit comprises:

[0016] A self-rotating wheel, the self-rotating wheel is rotatably connected to the end of the fixed cross bar along the extension direction;

[0017] A self-rotating fixed rod connected to the self-rotating wheel;

[0018] An upper wall plate connected to the bottom of the self-rotating fixing rod;

[0019] An inner wall plate, the inner wall plate being connected to a side of the upper wall plate facing away from the self-rotating fixing rod;

[0020] An internal fixing rod, the top of which is connected to the bottom of the self-rotating fixing rod;

[0021] An outer wall plate, the outer wall plate is connected to the bottom of the inner fixing rod, there is a distance between the outer wall plate and the inner wall plate, and there is a distance between the outer wall plate and the upper wall plate;

[0022] The upper wall plate, the inner wall plate and the outer wall plate form an anaerobic ammonia oxidation zone of the first anaerobic ammonia oxidation unit, and the upper wall plate, the inner wall plate and the outer wall plate rotate with the extending direction of the self-rotating fixed rod as the axis.

[0023] In some embodiments, the inner wall panel includes a first panel segment and a second panel segment, and the outer wall panel includes a third panel segment and a fourth panel segment;

[0024] The top of the first plate segment is connected to the upper wall plate, the top of the second plate segment is connected to the bottom of the first plate segment, the extension direction of the second plate segment and the extension direction of the first plate segment form an included angle, and compared with the top of the second plate segment, the bottom of the second plate segment is closer to the outer wall plate;

[0025] The third plate segment is connected to the internal fixing rod, the top of the fourth plate segment is connected to the bottom of the third plate segment, and the extending direction of the fourth plate segment has an included angle with the extending direction of the third plate segment. Compared with the top of the fourth plate segment, the bottom of the fourth plate segment is closer to the inner wall plate;

[0026] The top of the second plate segment is higher than the top of the fourth plate segment;

[0027] The projection of the second plate segment towards the horizontal plane overlaps with the projection of the fourth plate segment towards the horizontal plane.

[0028] In some embodiments, the included angle between the extending direction of the water inlet injection pipe and the horizontal plane is 30° to 50°;

[0029] and / or, the top of the second plate segment is 10 - 15 mm higher than the top of the fourth plate segment;

[0030] and / or, along the extending direction of the fixed cross bar, the overlapping dimension of the projection of the second plate segment towards the horizontal plane and the projection of the fourth plate segment towards the horizontal plane is 1 to 3 mm.

[0031] In some embodiments, it further includes:

[0032] A sludge separation unit, a shortcut denitrification unit and a clarification unit located in the shortcut nitrification - anammox main reactor;

[0033] A sludge up - flow regeneration device, which is connected to the sludge separation unit, the clarification unit and the shortcut nitrification unit. The sludge separation unit is configured to separate granular sludge smaller than a preset size into the sludge up - flow regeneration device. The sludge up - flow regeneration device is configured to break the granular sludge smaller than the preset size and form granular sludge not smaller than the preset size, and convey it into the shortcut nitrification unit.

[0034] In some embodiments, the sludge up - flow regeneration device includes:

[0035] A container, a third water inlet is arranged at the lower part of the container, and the third water inlet is connected to the sludge separation unit to receive granular sludge smaller than a preset size; a first water inlet and a second water inlet are arranged at the bottom of the container, and both the first water inlet and the second water inlet are connected to the clarification unit to receive the water flow of the clarification unit; an air outlet is arranged at the top of the container; a first sludge discharge port is arranged at the lower part of the container, and the first sludge discharge port is connected to the shortcut nitrification unit; a first water outlet is arranged at the upper part of the container, and the first water outlet is connected to the shortcut nitrification unit;

[0036] A diversion pipe, a diversion pipe is arranged inside the container, a spiral guide plate is arranged at the lower part of the diversion pipe, a serrated structure is arranged at the upper part of the diversion pipe, and the first water inlet and the second water inlet are respectively located on opposite sides of the diversion pipe;

[0037] The connecting piece, the top end of the connecting piece is connected to the diversion pipe, and the extending direction of the connecting piece has an included angle with the horizontal plane;

[0038] The swirl baffle, the swirl baffle is connected to the bottom end of the connecting piece, and the extending direction of the swirl baffle has a first included angle with the horizontal plane;

[0039] The mud collecting plate, the bottom end of the mud collecting plate is connected to the inner wall of the container, the extending direction of the mud collecting plate has a second included angle with the horizontal plane, the mud collecting plate is located below the swirl baffle, and the first sludge discharge port is located between the swirl baffle and the mud collecting plate.

[0040] In some embodiments, the clarification unit includes an effluent tank, a second effluent outlet is provided at the upper part of the effluent tank, and the second effluent outlet is communicated with the reactor outlet pipe;

[0041] A third effluent outlet is provided at the lower part of the effluent tank, the third effluent outlet is communicated with the first reflux regulating valve, and the first reflux regulating valve is communicated with the shortcut denitrification unit; the third effluent outlet is communicated with the second reflux regulating valve, and the second reflux regulating valve is communicated with the anaerobic ammonium oxidation unit; the third effluent outlet is communicated with the third reflux regulating valve, and the third reflux regulating valve is communicated with both the first water inlet and the second water inlet;

[0042] The water tank includes;

[0043] The effluent weir plate, the effluent weir plate is connected to the inner wall of the shortcut nitrification-anaerobic ammonium oxidation main reactor, and the top of the effluent weir plate is lower than the second effluent outlet;

[0044] A buffer plate is arranged between the effluent weir plate and the second effluent outlet, the top of the buffer plate is connected to the inner top wall of the shortcut nitrification-anaerobic ammonium oxidation main reactor, and the bottom of the buffer plate has a distance from the effluent weir plate;

[0045] The folded baffle, the folded baffle includes a first baffle section and a second baffle section, one end of the first baffle section is inserted into the second effluent outlet, the other end of the first baffle section is connected to the top of the second baffle section, the bottom of the second baffle section has a distance from the effluent weir plate, the bottom of the second baffle section is higher than the bottom of the buffer plate, and the extending directions of the first baffle section and the second baffle section have an included angle.

[0046] In some embodiments, the sludge separation unit includes a plurality of three-phase separators and a plurality of cyclone separators;

[0047] The plurality of three-phase separators are arranged at intervals, and the three-phase separators are configured to settle granular sludge in the shortcut nitrification unit, the aqueous phase flows into the anaerobic ammonium oxidation unit, and the gas-liquid mixture carries granular sludge and flocculent sludge into the cyclone separator;

[0048] A plurality of cyclone separators are connected to a plurality of three-phase separators in a one-to-one correspondence. The cyclone separators are located above the three-phase separators. The feed inlet of the cyclone separator is communicated with the three-phase separator. The underflow port of the cyclone separator is communicated with the anammox unit. The overflow port of the cyclone separator is communicated with the sludge upflow regeneration device. The cyclone separator is configured to reflux granular sludge greater than or equal to a preset size to the anammox unit through the underflow port, and flow granular sludge smaller than the preset size to the sludge upflow regeneration device through the overflow port.

[0049] In some embodiments, it further includes an aeration device, and the aeration device is arranged at the bottom of the shortcut nitrification-anammox main reactor;

[0050] The aeration device is configured to aerate the shortcut nitrification-anammox main reactor so that the fluid volume in the gas-water riser pipe of the three-phase separator is 2-4 times the aeration volume.

[0051] In some embodiments, the shortcut denitrification unit includes:

[0052] An annular baffle, the outer wall of the annular baffle fits against the inner wall of the shortcut nitrification-anammox main reactor. A first through hole penetrating axially is provided in the middle area of the annular baffle. The annular baffle is provided with a plurality of first carbon source injection ports, and the plurality of carbon source injection ports are arranged at intervals around the circumferential direction of the annular baffle;

[0053] A lower layer screen, the lower layer screen is arranged below the annular baffle, there is a spacing between the lower layer screen and the annular baffle, and the outer wall of the lower layer screen fits against the inner wall of the shortcut nitrification-anammox main reactor;

[0054] A vertical baffle, the vertical baffle is connected to the top of the lower layer screen. A second through hole penetrating axially is provided in the middle area of the vertical baffle; there is a spacing between the top of the vertical baffle and the bottom of the annular baffle to form a circulation port;

[0055] An upper layer screen, the upper layer screen covers the top of the first through hole, and the upper layer screen is connected to the annular baffle;

[0056] The outer wall of the vertical baffle, the top wall of the lower layer screen, the bottom wall of the upper layer screen and the inner wall of the shortcut nitrification-anammox main reactor form a first inner cavity. The second through hole is communicated with the first through hole. The inner wall of the second through hole, the inner wall of the first through hole, the top wall of the lower layer screen and the bottom wall of the upper layer screen form a second inner cavity; the first carbon source injection port is communicated with the first inner cavity; the circulation port communicates the first inner cavity and the second inner cavity;

[0057] A carbon source addition pipe, the carbon source addition pipe is wound around the top of the annular baffle. The bottom of the carbon source addition pipe is provided with a plurality of second carbon source injection ports, and the plurality of second carbon source injection ports are arranged in a one-to-one correspondence with the plurality of first carbon source injection ports;

[0058] A carbon source batching device, the carbon source batching device is communicated with a carbon source addition pipe and is also communicated with a first reflux regulating valve.

[0059] In a second aspect, the present application provides an integrated shortcut nitrification-anaerobic ammonium oxidation method for high-load denitrification, which is used for an integrated shortcut nitrification-anaerobic ammonium oxidation system for high-load denitrification as described above. The method includes:

[0060] Inoculate granular sludge into the shortcut nitrification unit;

[0061] The water inlet device sprays water flow into the inner cavity of the shortcut nitrification-anaerobic ammonium oxidation main reactor through a water inlet injection pipe;

[0062] The water flow drives the first anaerobic ammonium oxidation unit or the second anaerobic ammonium oxidation unit close to the water inlet injection pipe to rotate relative to the fixed cross bar;

[0063] The rotating shaft device drives the fixed cross bar to rotate so as to alternate the positions of the first anaerobic ammonium oxidation unit and the second anaerobic ammonium oxidation unit.

[0064] The present application provides an integrated shortcut nitrification-anaerobic ammonium oxidation system and method for high-load denitrification. An integrated shortcut nitrification-anaerobic ammonium oxidation system for high-load denitrification includes a water inlet device, a shortcut nitrification-anaerobic ammonium oxidation main reactor, a rotating shaft device, a fixed cross bar, a first anaerobic ammonium oxidation unit, a second anaerobic ammonium oxidation unit, and a shortcut nitrification unit. The shortcut nitrification-anaerobic ammonium oxidation main reactor has an inner cavity. A water inlet injection pipe is arranged at the lower part of the shortcut nitrification-anaerobic ammonium oxidation main reactor. The extending direction of the water inlet injection pipe forms an angle with the horizontal plane and also forms an angle with the vertical direction. The rotating shaft device is configured to drive the fixed cross bar to rotate so that the first anaerobic ammonium oxidation unit or the second anaerobic ammonium oxidation unit is close to the water inlet injection pipe. The bottom end of the water inlet injection pipe is communicated with the water inlet device. The water inlet device is configured to spray water flow to the first anaerobic ammonium oxidation unit or the second anaerobic ammonium oxidation unit through the water inlet injection pipe so that the first anaerobic ammonium oxidation unit or the second anaerobic ammonium oxidation unit rotates relative to the fixed cross bar. In this way, the anaerobic ammonium oxidation unit rotates by itself, which can effectively make the granular sludge flow in the unit, strengthen the circulation of the granular sludge in the shortcut nitrification unit, quickly start the anaerobic ammonium oxidation reaction, and enhance the anaerobic ammonium oxidation efficiency. The positions of the first anaerobic ammonium oxidation unit and the second anaerobic ammonium oxidation unit are switched, so that the anaerobic ammonium oxidation units can work alternately. In the anaerobic ammonium oxidation unit that does not rotate by itself, the granular sludge is in a slow flow state, and the reaction efficiency is reduced. Let half of the granular sludge working at high load rest in place, adjust its physiological state, and restore its activity. Therefore, the present application provides an integrated shortcut nitrification-anaerobic ammonium oxidation system and method for high-load denitrification, and the operation stability of the system is relatively good and the denitrification efficiency is relatively high. Description of the Drawings

[0065] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0066] Figure 1 Structural schematic diagram of an integrated shortcut nitrification-anaerobic ammonium oxidation system for high-load denitrification provided by an embodiment of the present application;

[0067] Figure 2 Structural schematic diagram of the first anaerobic ammonium oxidation unit and the second anaerobic ammonium oxidation unit in an integrated shortcut nitrification-anaerobic ammonium oxidation system for high-load denitrification provided by an embodiment of the present application;

[0068] Figure 3 Structural schematic diagram of the shortcut denitrification unit in an integrated shortcut nitrification-anaerobic ammonium oxidation system for high-load denitrification provided by an embodiment of the present application;

[0069] Figure 4 Structural schematic diagram of the annular plate and the carbon source addition pipe in an integrated shortcut nitrification-anaerobic ammonium oxidation system for high-load denitrification provided by an embodiment of the present application;

[0070] Figure 5 Partial structural schematic diagram of the clarification unit in an integrated shortcut nitrification-anaerobic ammonium oxidation system for high-load denitrification provided by an embodiment of the present application;

[0071] Figure 6 Structural schematic diagram of the sludge upflow regeneration device in an integrated shortcut nitrification-anaerobic ammonium oxidation system for high-load denitrification provided by an embodiment of the present application;

[0072] Figure 7 Flow schematic diagram of a high-load denitrification integrated shortcut nitrification-anaerobic ammonium oxidation method provided by an embodiment of the present application.

[0073] Explanation of reference numerals:

[0074] 100 - Water inlet device; 110 - Raw water tank; 120 - Raw water pump; 130 - Reactor inlet pipe; 140 - Effluent reflux pipe; 150 - Effluent reflux pipe valve;

[0075] 200 - Shortcut nitrification-anaerobic ammonium oxidation main reactor; 210 - Reactor outlet pipe; 220 - Effluent valve; 230 - Aeration device; 240 - Inlet injection pipe; 250 - Sludge inlet; 260 - Second sludge discharge port; 270 - Fifth water inlet; 280 - Reactor reflux pipe; 290 - Reactor reflux pump;

[0076] 400 - Short - range denitrification unit; 410 - Annular baffle; 411 - First carbon source injection port; 420 - First inner cavity; 430 - Second inner cavity; 440 - Circulation port; 450 - Upper sieve mesh; 460 - Lower sieve mesh; 470 - Carbon source addition pipe; 471 - Second carbon source injection port; 480 - Carbon source batching device; 490 - Vertical baffle;

[0077] 500 - Anaerobic ammonium oxidation unit; 510 - First anaerobic ammonium oxidation unit; 511 - Self - rotating wheel; 512 - Self - rotating fixed rod; 513 - Upper wall plate; 514 - Inner wall plate; 5141 - First plate segment; 5142 - Second plate segment; 515 - Inner fixed rod; 516 - Outer wall plate; 5161 - Third plate segment; 5162 - Fourth plate segment; 520 - Second anaerobic ammonium oxidation unit;

[0078] 600 - Sludge separation unit; 610 - Three - phase separator; 611 - Gas - water riser pipe; 612 - First gas - collecting wall plate; 613 - Second gas - collecting wall plate; 620 - Hydrocyclone; 621 - Feed inlet; 622 - Underflow port; 623 - Overflow port; 624 - Hydrocyclone overflow pipe;

[0079] 300 - Clarification unit; 310 - Second water outlet; 320 - Third water outlet; 330 - First reflux regulating valve; 340 - Second reflux regulating valve; 350 - Third reflux regulating valve; 360 - Effluent weir plate; 370 - Buffer plate; 380 - Folded baffle;

[0080] 700 - Short - range nitrification unit;

[0081] 800 - Up - flow sludge regeneration device; 810 - Third water inlet; 820 - First water inlet; 830 - Second water inlet; 840 - Gas outlet; 850 - First sludge discharge port; 860 - First water outlet; 870 - Diversion pipe; 880 - Spiral guide plate; 890 - Connector; 8100 - Swirl baffle; 8110 - Mud - receiving plate; 8120 - Serrated structure;

[0082] 900 - Rotating shaft device;

[0083] 1000 - Fixed cross bar. Specific implementation mode

[0084] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are some, but not all, of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts shall fall within the scope of protection of this application. Without conflict, the following embodiments and the features in the embodiments may be combined with each other.

[0085] There are some limiting factors in the anaerobic ammonium oxidation process itself, such as poor total nitrogen removal efficiency and susceptibility to external environmental influences. In particular, the anaerobic ammonium oxidizing bacteria in anaerobic ammonium oxidation granular sludge are autotrophic bacteria with low cell yields, long doubling times, and sensitivity to environmental conditions, resulting in slow growth of anaerobic ammonium oxidizing bacteria, difficulties in maintaining stability and regeneration, and the , in wastewater and the treatment process will also affect the stability of the operation of the anaerobic ammonium oxidation process.

[0086] To overcome the defects in the prior art, this application provides an integrated shortcut nitrification-anaerobic ammonium oxidation system and method for high-load nitrogen removal. An integrated shortcut nitrification-anaerobic ammonium oxidation system for high-load nitrogen removal includes: a water inlet device, a shortcut nitrification-anaerobic ammonium oxidation main reactor, a rotating shaft device, a fixed crossbar, a first anaerobic ammonium oxidation unit, a second anaerobic ammonium oxidation unit, and a shortcut nitrification unit. The shortcut nitrification-anaerobic ammonium oxidation main reactor has an inner cavity. An inlet injection pipe is provided at the lower part of the shortcut nitrification-anaerobic ammonium oxidation main reactor. The extending direction of the inlet injection pipe forms an angle with the horizontal plane and an angle with the vertical direction. The rotating shaft device is configured to drive the fixed crossbar to rotate so that the first anaerobic ammonium oxidation unit or the second anaerobic ammonium oxidation unit approaches the inlet injection pipe; the bottom end of the inlet injection pipe is communicated with the water inlet device, and the water inlet device is configured to inject water flow into the first anaerobic ammonium oxidation unit or the second anaerobic ammonium oxidation unit through the inlet injection pipe so that the first anaerobic ammonium oxidation unit or the second anaerobic ammonium oxidation unit rotates relative to the fixed crossbar. In this way, the anaerobic ammonium oxidation unit rotates by itself, which can effectively flow the granular sludge in the unit, strengthen the circulation of the granular sludge in the shortcut nitrification unit, quickly start the anaerobic ammonium oxidation reaction, and enhance the anaerobic ammonium oxidation efficiency. The position conversion of the first anaerobic ammonium oxidation unit and the second anaerobic ammonium oxidation unit enables the anaerobic ammonium oxidation units to work alternately. In the anaerobic ammonium oxidation unit that does not rotate by itself, the granular sludge is in a slow flow state, and the reaction efficiency is reduced, allowing half of the granular sludge working at high load to rest in place, adjust its physiological state, and recover its activity. Therefore, this application provides an integrated shortcut nitrification-anaerobic ammonium oxidation system and method for high-load nitrogen removal, and the operation stability of the system is relatively good and the nitrogen removal efficiency is relatively high.

[0087] The content of the present application will be described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can understand the content of the present application more clearly and in detail.

[0088] Figure 1 It is a schematic structural diagram of an integrated short-cut nitrification-anaerobic ammonium oxidation system for high-load denitrification provided by an embodiment of the present application.

[0089] See Figure 1 As shown, the present application provides an integrated short-cut nitrification-anaerobic ammonium oxidation system for high-load denitrification, including a water inlet device 100.

[0090] In some embodiments, an integrated short-cut nitrification-anaerobic ammonium oxidation system for high-load denitrification includes a short-cut nitrification-anaerobic ammonium oxidation main reactor 200.

[0091] Among them, the short-cut nitrification-anaerobic ammonium oxidation main reactor 200 is communicated with the water inlet device 100.

[0092] Among them, the short-cut nitrification-anaerobic ammonium oxidation main reactor 200 has an inner cavity.

[0093] A water inlet injection pipe 240 is arranged at the lower part of the short-cut nitrification-anaerobic ammonium oxidation main reactor 200, and the bottom end of the water inlet injection pipe 240 is connected to the short-cut nitrification-anaerobic ammonium oxidation main reactor 200.

[0094] The top end of the water inlet injection pipe 240 is located in the inner cavity, and the extending direction of the water inlet injection pipe 240 has an angle with the horizontal plane and an angle with the vertical direction.

[0095] An integrated short-cut nitrification-anaerobic ammonium oxidation system for high-load denitrification includes a rotating shaft device 900. The rotating shaft device 900 is located in the inner cavity.

[0096] Specifically, the rotating shaft device 900 includes a driving member and a rotating shaft. The driving member drives the rotating shaft to rotate. Among them, the driving member can be a motor.

[0097] An integrated short-cut nitrification-anaerobic ammonium oxidation system for high-load denitrification includes a fixed cross bar 1000. The fixed cross bar 1000 is connected to the rotating shaft device 900.

[0098] An integrated short-cut nitrification-anaerobic ammonium oxidation system for high-load denitrification includes a first anaerobic ammonium oxidation unit 510. The first anaerobic ammonium oxidation unit 510 is rotatably connected to one end of the fixed cross bar 1000 along the extending direction, and an anaerobic ammonium oxidation area is arranged in the first anaerobic ammonium oxidation unit 510.

[0099] An integrated shortcut nitrification-anaerobic ammonium oxidation system for high-load nitrogen removal includes a second anaerobic ammonium oxidation unit 520. The second anaerobic ammonium oxidation unit 520 is rotatably connected to the second end of the fixed crossbar 1000 along the extending direction, and an anaerobic ammonium oxidation zone is arranged in the second anaerobic ammonium oxidation unit 520.

[0100] An integrated shortcut nitrification-anaerobic ammonium oxidation system for high-load nitrogen removal includes a shortcut nitrification unit 700. A shortcut nitrification unit 700 is arranged between the outer surfaces of the first anaerobic ammonium oxidation unit 510 and the second anaerobic ammonium oxidation unit 520 and the inner wall of the shortcut nitrification-anaerobic ammonium oxidation main reactor 200.

[0101] The rotating shaft device 900 is configured to drive the fixed crossbar 1000 to rotate, so that the first anaerobic ammonium oxidation unit 510 or the second anaerobic ammonium oxidation unit 520 approaches the water inlet injection pipe 240.

[0102] The bottom end of the water inlet injection pipe 240 is communicated with a water inlet device, and the water inlet device is configured to inject water flow into the first anaerobic ammonium oxidation unit 510 or the second anaerobic ammonium oxidation unit 520 through the water inlet injection pipe 240, so that the first anaerobic ammonium oxidation unit 510 or the second anaerobic ammonium oxidation unit 520 rotates relative to the fixed crossbar 1000.

[0103] It can be understood that the rotating shaft device 900 switches the positions of the first anaerobic ammonium oxidation unit 510 and the second anaerobic ammonium oxidation unit 520. The anaerobic ammonium oxidation unit facing the water inlet injection pipe 240 rotates relative to the fixed crossbar 1000 under the impact of the water flow of the water inlet injection pipe 240.

[0104] Wherein, the self-rotation of the anaerobic ammonium oxidation unit can enable the granular sludge in the unit to flow effectively, strengthen the circulation of the granular sludge in the shortcut nitrification unit 700, quickly start the anaerobic ammonium oxidation reaction, and improve the anaerobic ammonium oxidation efficiency. That is to say, the self-rotation of the anaerobic zone is driven by the shear force of the water flow, the granular sludge flows rapidly in the unit, and an effective circulation is achieved with the granular sludge inside the shortcut nitrification unit 700, which can start the reaction of the anaerobic ammonium oxidation unit, stabilize the operation of the anaerobic ammonium oxidation process, and improve the nitrogen removal efficiency.

[0105] Wherein, the position conversion of the first anaerobic ammonium oxidation unit 510 and the second anaerobic ammonium oxidation unit 520 can enable the anaerobic ammonium oxidation units to work alternately. In the anaerobic ammonium oxidation unit that does not rotate by itself, the granular sludge is in a slow flow state, and the reaction efficiency is reduced, allowing half of the granular sludge working at high load to rest in place, adjust its physiological state, and recover its activity.

[0106] In some embodiments, a clarification unit 300, a shortcut denitrification unit 400, an anaerobic ammonium oxidation unit 500, a sludge separation unit 600, and a shortcut nitrification unit 700 are provided in the shortcut nitrification-anaerobic ammonium oxidation main reactor 200. The anaerobic ammonium oxidation unit 500 includes a first anaerobic ammonium oxidation unit 510 and a second anaerobic ammonium oxidation unit 520.

[0107] In some embodiments, an integrated shortcut nitrification-anaerobic ammonium oxidation system for high-load nitrogen removal includes a sludge upflow regeneration device 800.

[0108] Among them, the sludge upflow regeneration device 800 is communicated with the sludge separation unit 600, the sludge upflow regeneration device 800 is communicated with the clarification unit 300, and the sludge upflow regeneration device 800 is communicated with the shortcut nitrification unit 700.

[0109] The influent device 100 is configured to inject sewage into the shortcut nitrification-anaerobic ammonium oxidation main reactor 200 and is used to receive a part of the sewage discharged from the shortcut nitrification-anaerobic ammonium oxidation main reactor 200.

[0110] The shortcut nitrification unit 700 can oxidize (ammonium cations) in the sewage into nitrite nitrogen (nitrite ions).

[0111] The anaerobic ammonium oxidation unit 500 can carry out anaerobic ammonium oxidation reaction, and react the and in the wastewater to generate (nitrate ions) and (nitrogen) simultaneously.

[0112] The shortcut denitrification unit 400 can carry out a shortcut denitrification reaction on a small amount of after passing through the anaerobic ammonium oxidation unit 500 and convert it into (nitrite ions), and then enter the anaerobic ammonium oxidation unit 500 through the clarification unit 300 to provide a substrate for the anaerobic ammonium oxidation reaction.

[0113] The clarification unit 300 can adjust the water output and control the effluent quality.

[0114] The sludge separation unit 600 is configured to separate the granular sludge smaller than a preset size into the sludge upflow regeneration device 800, and separate the granular sludge not smaller than the preset size into the shortcut nitrification unit 700 and the anaerobic ammonium oxidation unit 500.

[0115] The upflow sludge regeneration device 800 is configured to break up granular sludge smaller than a preset size and form granular sludge not smaller than the preset size, and convey it to the shortcut nitrification unit 700. In this way, granular sludge can be screened and recycled, promoting the regeneration of granular sludge and coupling with the shortcut denitrification process, enabling the long-term stable operation of the device.

[0116] It should be noted that the preset size can be set according to requirements. For example, the preset size is 1 mm. Or, the preset size is 1.5 mm, etc.

[0117] The specific structure of the water inlet device 100 will be described below:

[0118] Among them, the water inlet device 100 includes a raw water tank 110, and the raw water tank 110 can be used to receive external sewage and the sewage discharged from the shortcut nitrification-anaerobic ammonium oxidation main reactor 200.

[0119] The water inlet device 100 includes a raw water pump 120 and a reactor inlet pipe 130. The reactor inlet pipe 130 is communicated with the raw water tank 110 and is also communicated with the water inlet injection pipe 240 of the shortcut nitrification-anaerobic ammonium oxidation main reactor 200.

[0120] The water inlet device 100 includes an effluent return pipe 140 and an effluent return pipe valve 150. The effluent return pipe 140 is communicated with the raw water tank 110, and the effluent return pipe valve 150 controls whether the effluent return pipe 140 is communicated with the reactor outlet pipe 210 or not. Among them, the reactor outlet pipe 210 is communicated with the shortcut nitrification-anaerobic ammonium oxidation main reactor 200 and is also communicated with the outlet valve 220. The outlet valve 220 controls whether the reactor outlet pipe 210 is communicated with the outside of an integrated shortcut nitrification-anaerobic ammonium oxidation system for high-load nitrogen removal or not.

[0121] The specific structure of the shortcut nitrification-anaerobic ammonium oxidation main reactor 200 will be described below:

[0122] See Figure 1 As shown, the shortcut nitrification-anaerobic ammonium oxidation main reactor 200 has an inner cavity.

[0123] An aeration device 230 is arranged at the bottom of the shortcut nitrification-anaerobic ammonium oxidation main reactor 200. The aeration device 230 is used to provide aeration to the inner cavity of the shortcut nitrification-anaerobic ammonium oxidation main reactor 200.

[0124] Specifically, the aeration device 230 includes a gas source and a plurality of aeration discs. The plurality of aeration discs are arranged at intervals, and the aeration discs are communicated with the gas source. At least part of the aeration discs are located in the inner cavity.

[0125] At the lower part of the short-cut nitrification-anaerobic ammonium oxidation main reactor 200, there is an influent injection pipe 240, and the influent injection pipe 240 is used to communicate with the influent device 100.

[0126] At the lower part of the short-cut nitrification-anaerobic ammonium oxidation main reactor 200, there is a sludge inlet 250, and the sludge inlet 250 is used to communicate with the sludge upflow regeneration device 800. The granular sludge generated by the sludge upflow regeneration device 800 enters the short-cut nitrification-anaerobic ammonium oxidation main reactor 200 through the sludge inlet 250.

[0127] Among them, the sludge inlet 250 is located above the influent injection pipe 240, which is beneficial to the full contact between the sewage and the granular sludge.

[0128] At the lower part of the short-cut nitrification-anaerobic ammonium oxidation main reactor 200, there is a second sludge discharge port 260. The second sludge discharge port 260 communicates with the outside of the short-cut nitrification-anaerobic ammonium oxidation main reactor 200. The granular sludge can be discharged from the second sludge discharge port 260 to the outside of the short-cut nitrification-anaerobic ammonium oxidation main reactor 200 and be used as the bacterial source for the next batch of anaerobic ammonium oxidation reactors, realizing the rejuvenation and expansion of the granular sludge.

[0129] Among them, the second sludge discharge port 260 is located above the sludge inlet 250. In this way, after the granular sludge enters the short-cut nitrification-anaerobic ammonium oxidation main reactor 200, it can be further rejuvenated and expanded, and then discharged from the short-cut nitrification-anaerobic ammonium oxidation main reactor 200.

[0130] At the lower part of the short-cut nitrification-anaerobic ammonium oxidation main reactor 200, there is a fifth influent port 270. The fifth influent port 270 is used to communicate with the sludge upflow regeneration device 800 and receive the liquid discharged from the sludge upflow regeneration device 800, so as to further treat the liquid and improve the purification effect.

[0131] Figure 2 It is a schematic structural diagram of the first anaerobic ammonium oxidation unit and the second anaerobic ammonium oxidation unit in an integrated short-cut nitrification-anaerobic ammonium oxidation system with high-load denitrification provided by an embodiment of the present application.

[0132] See Figure 1 and Figure 2 As shown, in some embodiments, the first anaerobic ammonium oxidation unit 510 includes a self-rotating wheel 511.

[0133] Among them, the self-rotating wheel 511 is rotationally connected to the end of the fixed cross bar 1000 along the extending direction.

[0134] The first anaerobic ammonium oxidation unit 510 includes a self-rotating fixed rod 512.

[0135] Among them, the self-rotating fixed rod 512 is connected to the self-rotating wheel 511.

[0136] The first anammox unit 510 includes an upper wall plate.

[0137] Among them, the upper wall plate 513 is connected to the bottom of the self-rotating fixed rod 512.

[0138] The first anammox unit 510 includes an inner wall plate 514.

[0139] Among them, the inner wall plate 514 is connected to the side of the upper wall plate 513 facing away from the self-rotating fixed rod 512.

[0140] The first anammox unit 510 includes an internal fixed rod 515.

[0141] The top of the internal fixed rod 515 is connected to the bottom of the self-rotating fixed rod 512.

[0142] Specifically, the internal fixed rod 515 includes a first connection section, a second connection section, and a third connection section. The extending direction of the first connection section is consistent with the vertical direction. The top of the first connection section is connected to the bottom of the self-rotating fixed rod 512. The tops of the second connection section and the third connection section are both connected to the bottom of the first connection section. The extending directions of the second connection section and the third connection section both have an included angle with the extending direction of the first connection section. The second connection section is connected to the inner wall plate 514, and the third connection section is connected to the outer wall plate 516.

[0143] The first anammox unit 510 includes an outer wall plate 516. The outer wall plate 516 is connected to the bottom of the internal fixed rod 515. There is a distance between the outer wall plate 516 and the inner wall plate 514, and there is a distance between the outer wall plate 516 and the upper wall plate 513.

[0144] The upper wall plate 513, the inner wall plate 514, and the outer wall plate 516 enclose the anammox area of the first anammox unit 510.

[0145] The upper wall plate 513, the inner wall plate 514, and the outer wall plate 516 rotate around the extending direction of the self-rotating fixed rod 512 as the axis.

[0146] During operation, under the swirling of the aeration flow and the water flow, the granular sludge, together with the granular sludge refluxing from the bottom flow port 622 of the hydrocyclone 620 in the sludge separation unit 600, enters the anammox unit 500 through the gap between the upper wall plate 513 and the outer wall plate 516, and can flow back to the short-cut nitrification unit 700 through the gap between the lower edge of the inner wall plate 514 and the lower edge of the outer wall plate 516. The anammox reaction proceeds in a relatively independent area, which can avoid excessive and impact on the activity of the granular sludge.

[0147] In some embodiments, the inner wall plate 514 includes a first plate segment 5141 and a second plate segment 5142. The outer wall plate 516 includes a third plate segment 5161 and a fourth plate segment 5162.

[0148] The top of the first plate segment 5141 is connected to the upper wall plate 513. The top of the second plate segment 5142 is connected to the bottom of the first plate segment 5141. The extending direction of the second plate segment 5142 forms an angle with the extending direction of the first plate segment 5141. Compared with the top of the second plate segment 5142, the bottom of the second plate segment 5142 is closer to the outer wall plate 516.

[0149] The third plate segment 5161 is connected to the internal fixing rod 515. The top of the fourth plate segment 5162 is connected to the bottom of the third plate segment 5161. The extending direction of the fourth plate segment 5162 forms an angle with the extending direction of the third plate segment 5161. Compared with the top of the fourth plate segment 5162, the bottom of the fourth plate segment 5162 is closer to the inner wall plate 514.

[0150] The top of the second plate segment 5142 is higher than the top of the fourth plate segment 5162.

[0151] The projection of the second plate segment 5142 towards the horizontal plane overlaps with the projection of the fourth plate segment 5162 towards the horizontal plane.

[0152] It can be understood that through the arrangement of the second plate segment 5142 and the fourth plate segment 5162, the Venturi effect is formed. This effect is manifested in that when the restricted flow passes through the reduced cross-section of the flow-through area, the fluid velocity increases, and the velocity is inversely proportional to the cross-section of the flow-through area. According to Bernoulli's law, the increase in velocity is accompanied by a decrease in fluid pressure, which is the common Venturi phenomenon. Generally speaking, this effect means that a low pressure will be generated near the high-speed flowing fluid, thereby generating an adsorption effect. Specifically, when the water flow flows between the second plate segment 5142 and the fourth plate segment 5162, the cross-section of the flow-through area decreases, the velocity increases, and a low pressure will be generated nearby. It is difficult for gas to pass through this area and enter the anaerobic ammonium oxidation unit 500, while the water flow can rise and enter the anaerobic ammonium oxidation unit 500. Therefore, the interiors of the first anaerobic ammonium oxidation unit 510 and the second anaerobic ammonium oxidation unit 520 can form an anaerobic ammonium oxidation functional area, simplifying the structure of the integrated shortcut nitrification-anaerobic ammonium oxidation reactor.

[0153] Among them, under the action of hydraulic impact and swirl, the granular sludge enters the anaerobic ammonium oxidation unit through the gap between the second plate segment 5142 and the fourth plate segment 5162, automatically forming an anaerobic ammonium oxidation functional partition, which simplifies the structure of the integrated shortcut nitrification-anaerobic ammonium oxidation reactor.

[0154] In some embodiments, the angle between the extension direction of the water inlet injection pipe 240 and the horizontal plane is 30° to 50°. In this way, the water flow in the water inlet injection pipe 240 can easily drive the first anammox unit 510 or the second anammox unit 520 to rotate by itself.

[0155] In some embodiments, the top of the second plate segment 5142 is 10 - 15 mm higher than the top of the fourth plate segment 5162. In this way, it is beneficial to make the projection of the second plate segment 5142 facing the horizontal plane overlap with the projection of the fourth plate segment 5162 facing the horizontal plane.

[0156] In some embodiments, along the extension direction of the fixed cross bar 1000, the overlapping dimension of the projection of the second plate segment 5142 facing the horizontal plane and the projection of the fourth plate segment 5162 facing the horizontal plane is 1 to 3 mm. In this way, it is beneficial to form a Venturi effect and reduce the air entering into the first anammox unit 510 and the second anammox unit 520.

[0157] It should be noted that the structure of the second anammox unit 520 can be the same as that of the first anammox unit 510. The first anammox unit 510 and the second anammox unit 520 can be symmetrically arranged with respect to the rotation axis device 900. The structure of the second anammox unit 520 will not be elaborated herein in this embodiment.

[0158] In some embodiments, the sludge separation unit 600 includes a plurality of three - phase separators 610 and a plurality of hydrocyclone separators 620. Specifically, the number of the three - phase separators 610 can be 3 to 5.

[0159] In some embodiments, the distance from the bottom of the three - phase separator 610 to the inner bottom wall of the shortcut nitrification - anammox main reactor 200 is one - third of the height of the inner cavity of the shortcut nitrification - anammox main reactor 200.

[0160] Among them, the plurality of three - phase separators 610 are arranged at intervals. The three - phase separator 610 is configured to settle the granular sludge in the shortcut nitrification unit 700, the aqueous phase flows into the anammox unit 500, and the gas - water mixture carries the granular sludge and flocculent sludge into the hydrocyclone separator 620 under a relatively large aeration volume.

[0161] The plurality of hydrocyclone separators 620 are connected to the plurality of three - phase separators 610 in one - to - one correspondence. The hydrocyclone separator 620 is located above the three - phase separator 610.

[0162] The feed inlet 621 of the cyclone separator 620 is in communication with the three-phase separator 610, and the underflow port 622 of the cyclone separator 620 is in communication with the anammox unit 500. The cyclone separator 620 is configured to reflux granular sludge greater than or equal to a preset size to the anammox unit 500 through the underflow port 622, and moreover, part of the granular sludge then falls into the shortcut nitrification unit 700 under the action of gravity.

[0163] The overflow port of the cyclone separator 620 is in communication with the sludge upflow regeneration device 800, and the granular sludge smaller than the preset size flows to the sludge upflow regeneration device 800 through the overflow port.

[0164] Exemplarily, the gas-water flow passes through the three-phase separator 610, the granular sludge settles in the shortcut nitrification unit 700, the aqueous phase flows into the anammox unit 500, and the gas-water mixture carries granular sludge and flocculent sludge into the cyclone separator 620 under a relatively large aeration rate. The gas-water mixture is separated by the cyclone separator 620. The granular sludge with a particle size of not less than 1 mm refluxes to the anammox unit 500 through the underflow port 622 of the cyclone separator 620, and a small part of the granular sludge then falls into the shortcut nitrification unit 700 through the gas collection wall plate of the three-phase separator 610. The flocculent sludge smaller than 1 mm (which cannot be stratified) flows to the sludge upflow regeneration device 800 through the overflow port 623 for a water flow shearing and granulation process, and the formed regenerated granular sludge and water then enter the shortcut nitrification unit 700.

[0165] In some embodiments, the three-phase separator 610 includes a gas-water riser 611, a first gas collection wall plate 612, and a second gas collection wall plate 613.

[0166] The first gas collection wall plate 612 and the second gas collection wall plate 613 are respectively located on opposite sides of the gas-water riser 611 and are both connected to the bottom of the gas-water riser 611.

[0167] In some embodiments, by adjusting the aeration rate, the fluid volume in the gas-water riser 611 is 2 to 4 times the aeration rate.

[0168] It can be understood that when the fluid volume in the gas-water riser 611 is less than 2 times the aeration rate, the content of granular sludge and flocculent sludge in the gas-water riser 611 is relatively small. When the fluid volume in the gas-water riser 611 is greater than 4 times the aeration rate, the aeration rate is relatively large, which is likely to affect the activity of the granular sludge, and there is less granular sludge in the shortcut nitrification unit 700.

[0169] Among them, the area between the lower parts of the first gas collection wall plate 612 and the second gas collection wall plate 613 of the three-phase separator 610 and the aeration device 230 is the installation area of the shortcut nitrification unit 700.

[0170] Figure 3Schematic structural diagram of the short-cut denitrification unit in an integrated short-cut nitrification-anaerobic ammonium oxidation system for high-load nitrogen removal provided by an embodiment of the present application. Figure 4 Schematic structural diagram of an annular plate and a carbon source addition pipe in an integrated short-cut nitrification-anaerobic ammonium oxidation system for high-load nitrogen removal provided by an embodiment of the present application.

[0171] See Figure 1 As shown, in some embodiments, the distance from the top of the short-cut denitrification unit 400 to the inner top wall of the short-cut nitrification-anaerobic ammonium oxidation main reactor 200 is one-third of the height of the inner cavity of the short-cut nitrification-anaerobic ammonium oxidation main reactor 200.

[0172] See Figure 3 and Figure 4 As shown, in some embodiments, the short-cut denitrification unit 400 includes an annular baffle 410.

[0173] Among them, the outer wall of the annular baffle 410 fits against the inner wall of the short-cut nitrification-anaerobic ammonium oxidation main reactor 200, and a first through hole penetrating axially is provided in the middle area of the annular baffle 410.

[0174] Specifically, the annular baffle 410 is in the shape of a flat plate and is in the shape of a round cake. A hole is drilled in the middle area of the annular baffle 410 to form the first through hole. The axis of the first through hole is collinear with the axis of the annular baffle 410.

[0175] The annular baffle 410 is provided with a plurality of first carbon source injection ports 411, and the plurality of carbon source injection ports are arranged at intervals around the circumference of the annular baffle 410. The first carbon source injection port 411 is a through hole and is provided at the top of the annular baffle 410.

[0176] The short-cut denitrification unit 400 includes a lower screen 460.

[0177] The lower screen 460 is arranged below the annular baffle 410, and there is a distance between the lower screen 460 and the annular baffle 410. The outer wall of the lower screen 460 fits against the inner wall of the short-cut nitrification-anaerobic ammonium oxidation main reactor 200.

[0178] The short-cut denitrification unit 400 includes a vertical baffle 490.

[0179] The vertical baffle 490 is connected to the top of the lower screen 460, and a second through hole penetrating axially is provided in the middle area of the vertical baffle 490.

[0180] Specifically, the vertical baffle 490 is in the shape of a cylinder. A hole is drilled in the middle area of the vertical baffle 490 to form the second through hole. The axis of the second through hole is collinear with the axis of the vertical baffle 490.

[0181] There is a gap between the top of the vertical baffle 490 and the bottom of the annular baffle 410 to form a circulation port 440.

[0182] The short-cut denitrification unit 400 includes an upper sieve mesh 450.

[0183] The upper sieve mesh 450 covers the top of the first through hole, and the upper sieve mesh 450 is connected to the annular baffle 410.

[0184] The outer wall of the vertical baffle 490, the top wall of the lower sieve mesh 460, the bottom wall of the upper sieve mesh 450, and the inner wall of the short-cut nitrification-anaerobic ammonium oxidation main reactor 200 form a first inner cavity 420. The second through hole communicates with the first through hole. The inner wall of the second through hole, the inner wall of the first through hole, the top wall of the lower sieve mesh 460, and the bottom wall of the upper sieve mesh 450 form a second inner cavity 430. The first carbon source injection port 411 communicates with the first inner cavity 420. The circulation port 440 communicates the first inner cavity 420 and the second inner cavity 430.

[0185] The short-cut denitrification unit 400 includes a carbon source addition pipe 470.

[0186] The carbon source addition pipe 470 is wound around the top of the annular baffle 410. A plurality of second carbon source injection ports 471 are provided at the bottom of the carbon source addition pipe 470. The plurality of second carbon source injection ports 471 are arranged in one-to-one correspondence with the plurality of first carbon source injection ports 411. The second carbon source injection port 471 communicates with the corresponding first carbon source injection port 411.

[0187] The short-cut denitrification unit 400 includes a carbon source batching device 480.

[0188] The carbon source batching device 480 communicates with the carbon source addition pipe 470 and also communicates with the first reflux regulating valve 330.

[0189] Wherein, the first inner cavity 420 and the second inner cavity 430 are filled with packing materials.

[0190] It should be noted that the packing materials are divided into three layers. The upper and lower layers are sponges, and the middle layer is one or several of polypropylene PP microspheres, polyethylene HDPE microspheres, and polycarbonate PC microspheres. The packing materials are inoculated with short-cut denitrification sludge.

[0191] In some embodiments, the pore sizes of the upper sieve mesh 450 and the lower sieve mesh 460 are 15 - 25 mm.

[0192] It can be understood that the first carbon source injection port 411 and the second carbon source injection port 471 can distribute the carbon source mixture into the packing layer in the first inner cavity 420, and under the action of the upward water flow, it can flow back to the packing layer in the second inner cavity 430 and cannot flow downward into the shortcut nitrification unit 700. As the carbon source mixture is injected downward, a pressure difference is generated at the circulation port 440, which can enable the carbon source in the second inner cavity 430 to flow back to the packing layer in the first inner cavity 420 through the circulation port 440, achieving effective circulation in the packing layer and improving the utilization rate of the carbon source.

[0193] The shortcut denitrification unit 400 can remove excessive , and replenish for the anaerobic ammonium oxidation unit 500 below. Under the action of hydraulic swirl, the carbon source is evenly dispersed in the packing layer, which is suitable for the denitrification process.

[0194] In some embodiments, the distance between the outer wall of the vertical baffle 490 and the inner wall of the shortcut nitrification-anaerobic ammonium oxidation main reactor 200 is one-third of the radius of the inner wall of the shortcut nitrification-anaerobic ammonium oxidation main reactor 200.

[0195] Figure 5 FIG. is a partial structural schematic diagram of the clarification unit in an integrated shortcut nitrification-anaerobic ammonium oxidation system for high-load nitrogen removal provided by an embodiment of the present application.

[0196] In some embodiments, the clarification unit 300 includes an effluent tank.

[0197] The distance from the bottom of the effluent tank to the inner top wall of the shortcut nitrification-anaerobic ammonium oxidation main reactor 200 is one-fifth of the height of the inner cavity of the shortcut nitrification-anaerobic ammonium oxidation main reactor 200.

[0198] Refer to Figure 5 As shown, in some embodiments, a second water outlet 310 is provided at the upper part of the effluent tank, and the second water outlet 310 is communicated with the reactor outlet pipe 210.

[0199] A third water outlet 320 is provided at the lower part of the effluent tank, and the third water outlet 320 is communicated with the first reflux regulating valve 330, and the first reflux regulating valve 330 is communicated with the shortcut denitrification unit 400.

[0200] Specifically, the first reflux regulating valve 330 is communicated with the carbon source batching device 480.

[0201] Among them, the third water outlet 320 is communicated with the second reflux regulating valve 340, and the second reflux regulating valve 340 is communicated with the anaerobic ammonium oxidation unit 500.

[0202] Among them, the third water outlet 320 is communicated with the third reflux regulating valve 350, and the third reflux regulating valve 350 is communicated with both the first water inlet and the second water inlet.

[0203] It can be understood that the concentration in the anaerobic ammonium oxidation zone is detected in the short-cut nitrification-anaerobic ammonium oxidation main reactor 200 to control the flow rate of the reflux water and timely adjust the reaction rates of short-cut nitrification and anaerobic ammonium oxidation. When the concentration is too low, the reflux water can increase the flow rate and enter the short-cut nitrification-anaerobic ammonium oxidation reaction zone (the short-cut nitrification unit 700 and the anaerobic ammonium oxidation unit 500), which can improve the start-up efficiency of the integrated short-cut nitrification and anaerobic ammonium oxidation reaction.

[0204] Specifically, the design of the water outlet tank can slow down the water outlet rate, enable the water flow to preferentially flow back into the short-cut nitrification-anaerobic ammonium oxidation main reactor 200, and can adjust the reflux water volume of each water path through the first reflux regulating valve 330, the second reflux regulating valve 340, and the third reflux regulating valve 350 to control the water outlet quality.

[0205] In some embodiments, the water tank includes a weir plate 360.

[0206] The weir plate 360 is connected to the inner wall of the short-cut nitrification-anaerobic ammonium oxidation main reactor 200, and the top of the weir plate 360 is lower than the second water outlet 310.

[0207] Specifically, the weir plate 360 includes a weir wall plate and a weir bottom plate that are connected to each other. The weir wall plate is vertically arranged, and the weir bottom plate is horizontally arranged. The dimension that the weir wall plate is lower than the second water outlet 310 is 3 to 5 cm.

[0208] Among them, a buffer plate 370 is arranged between the weir plate 360 and the second water outlet 310. The top of the buffer plate 370 is connected to the inner top wall of the short-cut nitrification-anaerobic ammonium oxidation main reactor 200, and there is a spacing between the bottom of the buffer plate 370 and the weir plate 360.

[0209] Specifically, a buffer plate 370 is arranged on the side of the weir wall plate facing the second water outlet 310.

[0210] In some embodiments, the water tank includes a folded baffle 380.

[0211] The folded baffle 380 includes a first baffle section and a second baffle section. One end of the first baffle section is inserted into the second water outlet 310, the other end of the first baffle section is connected to the top of the second baffle section, there is a spacing between the bottom of the second baffle section and the weir plate 360, and there is an included angle between the extending directions of the first baffle section and the second baffle section.

[0212] Specifically, the first baffle section is horizontally arranged, and the second baffle section is vertically arranged. The bottom end of the second baffle section is higher than the bottom end of the buffer plate 370. The bottom end of the second baffle section is 5 to 10 cm higher than the bottom end of the buffer plate 370.

[0213] Figure 6 It is a schematic structural diagram of a sludge upflow regeneration device in an integrated shortcut nitrification-anaerobic ammonium oxidation system for high-load denitrification provided by an embodiment of the present application.

[0214] See Figure 6 As shown, in some embodiments, the sludge upflow regeneration device 800 includes a container.

[0215] A third water inlet 810 is provided at the lower part of the container. The third water inlet 810 is communicated with the sludge separation unit 600 to receive granular sludge smaller than a preset size. Specifically, the overflow port 623 of the hydrocyclone 620 is communicated with the third water inlet 810 through a hydrocyclone overflow pipe 624.

[0216] A first water inlet 820 and a second water inlet 830 are provided at the bottom of the container. Both the first water inlet and the second water inlet are communicated with the clarification unit 300 to receive the water flow of the clarification unit 300.

[0217] Specifically, the first water inlet 820 and the second water inlet 830 are communicated with the reactor return pipe 280 through a third return regulating valve 350. The reactor return pipe 280 is communicated with a reactor return pump 290, and the reactor return pump 290 is communicated with a third water outlet 320.

[0218] An air outlet 840 is provided at the top of the container.

[0219] A first sludge discharge port 850 is provided at the lower part of the container. The first sludge discharge port 850 is communicated with the shortcut nitrification unit 700.

[0220] A first water outlet 860 is provided at the upper part of the container. The first water outlet 860 is communicated with the shortcut nitrification unit 700.

[0221] Specifically, the first water outlet 860 is located above the first sludge discharge port 850. The water inlet injection pipe 240 is located below the first sludge discharge port 850.

[0222] The sludge upflow regeneration device 800 includes a draft tube 870.

[0223] A draft tube 870 is arranged inside the container. A spiral guide plate 880 is arranged at the lower part of the draft tube 870, and a sawtooth structure 8120 is arranged at the upper part of the draft tube 870. The first water inlet 820 and the second water inlet 830 are respectively located on opposite sides of the draft tube 870.

[0224] Specifically, the position of the spiral guide plate 880 is limited to one-fourth of the height of the draft tube 870.

[0225] The upflow sludge regeneration device 800 includes a connecting piece 890.

[0226] The top end of the connecting piece 890 is connected to the draft tube 870, and the extending direction of the connecting piece 890 has an angle with the horizontal plane.

[0227] The upflow sludge regeneration device 800 includes a swirl baffle 8100.

[0228] Among them, the swirl baffle 8100 is connected to the bottom end of the connecting piece, and the extending direction of the swirl baffle 8100 has a first angle with the horizontal plane.

[0229] Specifically, the distance from the bottom of the swirl baffle 8100 to the bottom of the container is one-third of the height of the container.

[0230] The upflow sludge regeneration device 800 includes a mud collecting plate 8110.

[0231] Among them, the bottom end of the mud collecting plate 8110 is connected to the inner wall of the container, the extending direction of the mud collecting plate 8110 has a second angle with the horizontal plane, the mud collecting plate 8110 is located below the swirl baffle 8100, and the first sludge discharge port 850 is located between the swirl baffle 8100 and the mud collecting plate 8110.

[0232] In some embodiments, the first angle is 30° - 50°.

[0233] In some embodiments, the second angle is 20° - 30°.

[0234] When the second angle is less than 20°, the inclination angle of the mud collecting plate 8110 is small, and the granular sludge is not easy to slide to the first sludge discharge port 850. Moreover, the effect of the mud collecting plate 8110 in increasing the tangential water flow velocity and circulation and enhancing the swirl is poor. Among them, the water shear force can crush the flocculent sludge to promote the regeneration of granular sludge, replenish the integrated short-cut nitrification and anaerobic ammonium oxidation reaction device, and solve the process instability caused by the floating and loss of flocculent sludge.

[0235] It can be understood that the water flows from the first water inlet 820 and the second water inlet 830 form a two-way counter-flow water inlet. Then, through the spiral guide plate 880, two upward spiral fluids are formed near the diversion pipe 870. The bubbles and the muddy water wrapping layer of the flocculent sludge are cut by numerous sawtooth structures 8120, and the gas, mud, and the wrapped water can be separated. After the rising mud and water flow are obliquely cut by the swirl baffle 8100, part of the water forms a reflux, and part of the water passes through the gap between the upper end of the swirl baffle 8100 and the diversion pipe 870 and rises at an increased speed. The water flow refluxes in the upper part of the sludge up-flow regeneration device 800, and passes through the gap between the lower end of the swirl baffle 8100 and the mud receiving plate 8110 and is obliquely blocked by the mud receiving plate, forming a swirl in the area below the mud receiving plate 8110 and the swirl baffle 8100, enhancing mass transfer, strengthening the interphase mixing of mud and water, and causing the broken sludge particles to adhere into balls. The orientation settings of the swirl baffle 8100 and the mud receiving plate 8110 can increase the tangential water flow velocity and circulation, increase the swirl, break the low-density particles, and promote the adhesion of small particle sludge into balls under the action of the water shear force, strengthening the regeneration of granular sludge.

[0236] It should be noted that after the granular sludge in the main reactor grows and rejuvenates, it can be output and applied to other anaerobic ammonium oxidation reactors.

[0237] Figure 7 The figure is a schematic flow chart of an integrated shortcut nitrification-anaerobic ammonium oxidation method for high-load denitrification provided by an embodiment of the present application.

[0238] See Figure 7 As shown, an integrated shortcut nitrification-anaerobic ammonium oxidation method for high-load denitrification, which is used for the above-mentioned integrated shortcut nitrification-anaerobic ammonium oxidation system for high-load denitrification, the method includes:

[0239] S101. Inoculate granular sludge into the shortcut nitrification unit.

[0240] S102. The water inlet device sprays water flow into the inner cavity of the shortcut nitrification-anaerobic ammonium oxidation main reactor through the water inlet injection pipe.

[0241] S103. The water flow drives the first anaerobic ammonium oxidation unit or the second anaerobic ammonium oxidation unit near the water inlet injection pipe to rotate relative to the fixed cross bar.

[0242] S104. The rotating shaft device drives the fixed cross bar to rotate to alternate the positions of the first anaerobic ammonium oxidation unit and the second anaerobic ammonium oxidation unit.

[0243] The working process of the integrated shortcut nitrification-anaerobic ammonium oxidation method for high-load denitrification will be described below.

[0244] The integrated anaerobic ammonium oxidation granular sludge is inoculated into the short-term nitrification unit 700 of the reactor, and the sludge inoculation amount is 2% to 3%. The outlet valve 220 is closed, and the valve 150 of the effluent return pipe is opened. The influent and aeration of the short-term nitrification-anaerobic ammonium oxidation main reactor 200 are started, and the dissolved oxygen in the short-term nitrification unit 700 is controlled at 0.2 to 0.5 mg / L through aeration. The wastewater first enters the short-term nitrification unit 700 for short-term nitrification reaction to oxidize half of the to nitrite nitrogen . Then the wastewater enters the anaerobic ammonium oxidation unit 500 for anaerobic ammonium oxidation reaction, and the and in the wastewater react to generate and . The integrated short-term nitrification-anaerobic ammonium oxidation reaction of the reactor is maintained for 3 to 5 h, and the anaerobic ammonium oxidation unit 500 is operated for 3 to 5 h through the rotating shaft device 900. During the operation, the granular sludge is also evenly distributed in the short-term nitrification unit 700 and the anaerobic ammonium oxidation unit 500. At this time, the effluent of the short-term nitrification-anaerobic ammonium oxidation main reactor 200 is returned to the original water tank 110.

[0245] The in the reactor undergoes short-term denitrification reaction in the short-term denitrification unit 400 and is converted into , and then enters the anaerobic ammonium oxidation unit 500 through the second reflux regulating valve 340 to provide substrates for the anaerobic ammonium oxidation reaction.

[0246] After operating for 1 to 2 h, the valve 150 of the effluent return pipe is closed, the outlet valve 220 is opened, and the influent of the short-term nitrification-anaerobic ammonium oxidation main reactor 200 is kept open. Through the first reflux regulating valve 330, the second reflux regulating valve 340 and the third reflux regulating valve 350, the ratio of the reflux water to the effluent of the short-term nitrification-anaerobic ammonium oxidation main reactor 200 is controlled at 4-6:1, and the short-term nitrification-anaerobic ammonium oxidation main reactor 200 normally influents and effluents.

[0247] The granular sludge growing continuously in the short-term nitrification-anaerobic ammonium oxidation main reactor 200 is regularly discharged from the second sludge discharge port 260 and applied as the bacterial source for the next batch of anaerobic ammonium oxidation reactors to realize the rejuvenation and expansion of the granular sludge.

[0248] It should be noted that phrases such as "an embodiment", "embodiment", "exemplary embodiment", "some embodiments" mentioned in the specification indicate that the described embodiments may include specific features, structures or characteristics, but not necessarily every embodiment includes the specific feature, structure or characteristic. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when combining specific features, structures or characteristics with an embodiment, it is within the knowledge scope of those skilled in the art to implement such features, structures or characteristics in combination with other embodiments, whether explicitly or implicitly described.

[0249] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part depending on the context, the term "one or more" as used herein can be used to describe any feature, structure, or property in the sense of a singular meaning, or can be used to describe a combination of features, structures, or properties in the sense of a plural meaning. Similarly, at least in part depending on the context, terms such as "a" or "the" can also be understood to convey a singular usage or a plural usage.

[0250] It should be readily understood that the terms "on", "above", and "over" in this application should be construed in the broadest manner so that "on" not only means "directly on something", but also includes the meaning of "on something" with intermediate features or layers therebetween, and "above" or "over" not only includes the meaning of "above" or "over something", but can also include the meaning of "above" or "over something" with no intermediate features or layers therebetween (i.e., directly on something).

[0251] In addition, for ease of description, spatial relative terms may be used herein, such as "below", "beneath", "under", "above", "over", etc., to describe the relationship of one element or feature to another element or feature as shown in the figures. Spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90° or in other orientations), and the spatial relative descriptors used herein may be interpreted accordingly.

[0252] It should be noted that the brief description of the terms in this application is only for the convenience of understanding the embodiments described hereinafter, and is not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood in their ordinary and common meanings.

[0253] In addition, the terms "comprise" and "have" and any variations thereof are intended to cover but not exclude inclusion. For example, a product or device comprising a series of components need not be limited to those components clearly listed, but may include other components not clearly listed or inherent to these products or devices.

[0254] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0255] The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0256] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0257] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features. However, such modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An integrated shortcut nitrification-anaerobic ammonium oxidation system for high-load nitrogen removal, characterized in that, include: Water inlet device; A short-cut nitrification-anaerobic ammonium oxidation main reactor, which has an inner cavity, and a water inlet injection pipe is arranged at the lower part of the short-cut nitrification-anaerobic ammonium oxidation main reactor, and the extension direction of the water inlet injection pipe has an angle with the horizontal plane and an angle with the vertical direction; A rotating shaft device, which is located in the inner cavity; A fixed cross bar connected to the rotating shaft device; A first anaerobic ammonium oxidation unit is rotatably connected to a first end of the fixed cross bar along an extension direction, wherein an anaerobic ammonium oxidation zone is provided in the first anaerobic ammonium oxidation unit; A second anaerobic ammonium oxidation unit is rotatably connected to the second end of the fixed cross bar along the extension direction, and an anaerobic ammonium oxidation zone is provided in the second anaerobic ammonium oxidation unit; A short-cut nitrification unit, wherein the short-cut nitrification unit is disposed between the outer surfaces of the first anaerobic ammonium oxidation unit and the second anaerobic ammonium oxidation unit and the inner wall of the short-cut nitrification-anaerobic ammonium oxidation main reactor; The rotating shaft device is configured to drive the fixed cross bar to rotate so that the first anaerobic ammonium oxidation unit or the second anaerobic ammonium oxidation unit is close to the water inlet injection pipe; the bottom end of the water inlet injection pipe is connected to the water inlet device, and the water inlet device is configured to spray water to the first anaerobic ammonium oxidation unit or the second anaerobic ammonium oxidation unit through the water inlet injection pipe so that the first anaerobic ammonium oxidation unit or the second anaerobic ammonium oxidation unit rotates relative to the fixed cross bar.

2. The integrated shortcut nitrification-anaerobic ammonium oxidation system for high-load denitrification according to claim 1, characterized in that, The first anaerobic ammonium oxidation unit includes: A self-rotating wheel, the self-rotating wheel is rotatably connected to a first end of the fixed cross bar along an extending direction; A self-rotating fixing rod, the self-rotating fixing rod is connected to the self-rotating wheel; An upper wall plate, the upper wall plate being connected to the bottom of the self-rotating fixing rod; An inner wall plate, the inner wall plate being connected to a side of the upper wall plate facing away from the self-rotating fixing rod; An internal fixing rod, the top of which is connected to the bottom of the self-rotating fixing rod; An outer wall plate, the outer wall plate is connected to the bottom of the inner fixing rod, there is a distance between the outer wall plate and the inner wall plate, and there is a distance between the outer wall plate and the upper wall plate; The upper wall plate, the inner wall plate and the outer wall plate form an anaerobic ammonia oxidation zone of the first anaerobic ammonia oxidation unit, and the upper wall plate, the inner wall plate and the outer wall plate rotate around the extending direction of the self-rotating fixing rod as an axis.

3. An integrated shortcut nitrification-anaerobic ammonium oxidation system for high-load denitrification according to claim 2, characterized in that, The inner wall plate comprises a first plate segment and a second plate segment, and the outer wall plate comprises a third plate segment and a fourth plate segment; The top of the first plate segment is connected to the upper wall plate, the top of the second plate segment is connected to the bottom of the first plate segment, the extension direction of the second plate segment and the extension direction of the first plate segment form an angle, and compared with the top of the second plate segment, the bottom of the second plate segment is closer to the outer wall plate; The third plate segment is connected to the internal fixing rod, the top of the fourth plate segment is connected to the bottom of the third plate segment, the extension direction of the fourth plate segment and the extension direction of the third plate segment form an included angle, and compared with the top of the fourth plate segment, the bottom of the fourth plate segment is closer to the inner wall plate; The top of the second plate segment is higher than the top of the fourth plate segment; The projection of the second plate segment towards the horizontal plane overlaps partially with the projection of the fourth plate segment towards the horizontal plane.

4. An integrated shortcut nitrification-anaerobic ammonium oxidation system for high-load denitrification according to claim 3, characterized in that, The included angle between the extending direction of the water inlet injection pipe and the horizontal plane is 30° to 50°; and / or, the top of the second plate segment is 10 - 15 mm higher than the top of the fourth plate segment; and / or, along the extending direction of the fixed cross bar, the overlapping dimension of the projection of the second plate segment towards the horizontal plane and the projection of the fourth plate segment towards the horizontal plane is 1 to 3 mm.

5. An integrated shortcut nitrification-anaerobic ammonium oxidation system for high-load denitrification according to any one of claims 1 to 4, characterized in that, It further includes: a sludge separation unit, a clarification unit and a shortcut denitrification unit located in the shortcut nitrification - anammox main reactor; a sludge up - flow regeneration device, which is connected to the sludge separation unit, the clarification unit and the shortcut nitrification unit. The sludge separation unit is configured to separate granular sludge smaller than a preset size into the sludge up - flow regeneration device. The sludge up - flow regeneration device is configured to break the granular sludge smaller than the preset size and form granular sludge not smaller than the preset size, and convey it into the shortcut nitrification unit.

6. The integrated shortcut nitrification-anaerobic ammonium oxidation system for high-load denitrification according to claim 5, characterized in that The sludge up - flow regeneration device includes: a container, a third water inlet is arranged at the lower part of the container, and the third water inlet is connected to the sludge separation unit to receive the granular sludge smaller than the preset size; a first water inlet and a second water inlet are arranged at the bottom of the container, and both the first water inlet and the second water inlet are connected to the clarification unit to receive the water flow of the clarification unit; an air outlet is arranged at the top of the container; a first sludge discharge port is arranged at the lower part of the container, and the first sludge discharge port is connected to the shortcut nitrification unit; a first water outlet is arranged at the upper part of the container, and the first water outlet is connected to the shortcut nitrification unit; a diversion pipe, a diversion pipe is arranged inside the container, a spiral guide plate is arranged at the lower part of the diversion pipe, a serrated structure is arranged at the upper part of the diversion pipe, and the first water inlet and the second water inlet are respectively located on opposite sides of the diversion pipe; a connecting piece, the top end of the connecting piece is connected to the diversion pipe, and the extending direction of the connecting piece has an included angle with the horizontal plane; a swirl baffle, the swirl baffle is connected to the bottom end of the connecting piece, and the extending direction of the swirl baffle has a first included angle with the horizontal plane; a sludge receiving plate, the bottom end of the sludge receiving plate is connected to the inner wall of the container, the extending direction of the sludge receiving plate has a second included angle with the horizontal plane, the sludge receiving plate is located below the swirl baffle, and the first sludge discharge port is located between the swirl baffle and the sludge receiving plate.

7. An integrated shortcut nitrification-anaerobic ammonium oxidation system for high-load denitrification according to claim 6, characterized in that, The clarification unit includes a water outlet tank, a second water outlet is arranged at the upper part of the water outlet tank, and the second water outlet is connected to the reactor outlet pipe; a third water outlet is arranged at the lower part of the water outlet tank, the third water outlet is connected to a first reflux regulating valve, and the first reflux regulating valve is connected to the shortcut denitrification unit; the third water outlet is connected to a second reflux regulating valve, and the second reflux regulating valve is connected to the anammox unit; the third water outlet is connected to a third reflux regulating valve, and the third reflux regulating valve is connected to the first water inlet and the second water inlet; The water tank includes; The effluent weir plate is connected to the inner wall of the shortcut nitrification-anaerobic ammonium oxidation main reactor, and the top of the effluent weir plate is lower than the second water outlet; A buffer plate is arranged between the effluent weir plate and the second water outlet. The top of the buffer plate is connected to the inner top wall of the shortcut nitrification-anaerobic ammonium oxidation main reactor, and there is a gap between the bottom of the buffer plate and the effluent weir plate; The folded baffle includes a first baffle section and a second baffle section. One end of the first baffle section is inserted into the second water outlet, the other end of the first baffle section is connected to the top of the second baffle section, there is a gap between the bottom of the second baffle section and the effluent weir plate, the bottom of the second baffle section is higher than the bottom of the buffer plate, and there is an included angle between the extending directions of the first baffle section and the second baffle section.

8. An integrated shortcut nitrification-anaerobic ammonium oxidation system for high-load denitrification according to claim 5, characterized in that, The sludge separation unit includes a plurality of three-phase separators and a plurality of hydrocyclones; The plurality of three-phase separators are arranged at intervals. The three-phase separator is configured to settle granular sludge in the shortcut nitrification unit, the aqueous phase flows into the anaerobic ammonium oxidation unit, and the gas-liquid mixture carries granular sludge and flocculent sludge into the hydrocyclone; The plurality of hydrocyclones are connected to the plurality of three-phase separators one by one. The hydrocyclone is located above the three-phase separator. The feed inlet of the hydrocyclone is communicated with the three-phase separator. The underflow port of the hydrocyclone is communicated with the anaerobic ammonium oxidation unit. The overflow port of the hydrocyclone is communicated with the sludge upflow regeneration device. The hydrocyclone is configured to reflux granular sludge greater than or equal to a preset size to the anaerobic ammonium oxidation unit through the underflow port, and flow granular sludge smaller than the preset size to the sludge upflow regeneration device through the overflow port.

9. An integrated shortcut nitrification-anaerobic ammonium oxidation system for high-load denitrification according to claim 8, characterized in that, It further includes an aeration device, and the aeration device is arranged at the bottom of the shortcut nitrification-anaerobic ammonium oxidation main reactor; The aeration device is configured to aerate the shortcut nitrification-anaerobic ammonium oxidation main reactor so that the fluid volume in the gas-liquid riser pipe of the three-phase separator is 2-4 times the aeration volume.

10. An integrated shortcut nitrification-anaerobic ammonium oxidation system for high-load denitrification according to claim 7, characterized in that, The shortcut denitrification unit includes: An annular baffle, the outer wall of the annular baffle fits the inner wall of the shortcut nitrification-anaerobic ammonium oxidation main reactor. The annular baffle is provided with a first through hole and a first carbon source injection port; A lower layer screen is arranged below the annular baffle. There is a gap between the lower layer screen and the annular baffle, and the outer wall of the lower layer screen fits the inner wall of the shortcut nitrification-anaerobic ammonium oxidation main reactor; A vertical baffle is connected to the top of the lower layer screen. The vertical baffle is provided with a second through hole; there is a gap between the top of the vertical baffle and the bottom of the annular baffle to form a circulation port; An upper layer screen covers the top of the first through hole; The outer wall of the vertical baffle, the top wall of the lower sieve mesh, the bottom wall of the upper sieve mesh and the inner wall of the shortcut nitrification-anaerobic ammonium oxidation main reactor form a first inner cavity. The second through hole communicates with the first through hole. The inner wall of the second through hole, the inner wall of the first through hole, the top wall of the lower sieve mesh and the bottom wall of the upper sieve mesh form a second inner cavity. The first carbon source injection port communicates with the first inner cavity. The circulation port communicates the first inner cavity and the second inner cavity. A carbon source addition pipe is wound around the top of the annular baffle. A second carbon source injection port is arranged at the bottom of the carbon source addition pipe. The second carbon source injection port communicates with the first carbon source injection port. A carbon source batching device is communicated with the carbon source addition pipe and is also communicated with the first reflux regulating valve.

11. An integrated shortcut nitrification-anaerobic ammonium oxidation method for high-load denitrification, characterized in that, For an integrated shortcut nitrification-anaerobic ammonium oxidation system for high-load denitrification according to any one of claims 1 to 10, the method includes: Inoculating granular sludge into the shortcut nitrification unit; The water inlet device sprays water flow into the inner cavity of the shortcut nitrification-anaerobic ammonium oxidation main reactor through a water inlet injection pipe; The water flow drives the first anaerobic ammonium oxidation unit or the second anaerobic ammonium oxidation unit close to the water inlet injection pipe to rotate relative to the fixed cross bar; The rotating shaft device drives the fixed cross bar to rotate so as to rotate the positions of the first anaerobic ammonium oxidation unit and the second anaerobic ammonium oxidation unit.

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