CN217051768U - Up-flow hydrolysis acidification coupling preposed denitrification reactor - Google Patents
Up-flow hydrolysis acidification coupling preposed denitrification reactor Download PDFInfo
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Abstract
The utility model discloses an upflow hydrolysis acidification coupling prepositive denitrification reactor. The utility model discloses a leading denitrification reactor of upflow hydrolytic acidification coupling, pack the district including reactor body, central shaft, water inlet system, water distribution system, effluent system and denitrification. An anaerobic sludge expanded bed formed by hydraulic stirring is arranged in the reactor body; the central vertical shaft is vertically arranged inside the reactor body; the water inlet system is arranged on the reactor body, the water outlet end of the water inlet system is communicated with the central vertical shaft, the water inlet end of the water inlet system is connected with the raw water pipeline, the water distribution system is arranged at the bottom of the reactor body, and the water outlet system is arranged at the top of the inner cavity of the reactor body; the denitrification filler area is arranged at the upper layer of the inner cavity of the reactor body. The utility model discloses a leading denitrification reactor of upflow hydrolysis acidification coupling has solved the sewage factory and has thrown the high energy consumption that the carbon source caused, the problem of high carbon emission because of getting rid of total nitrogen and excessively throwing.
Description
Technical Field
The utility model relates to a sewage treatment field especially relates to a leading denitrification reactor of upflow hydrolytic acidification coupling.
Background
The biochemical quality of industrial wastewater and park wastewater is poor under the common condition, the biochemical quality of the industrial wastewater can be greatly improved by using a hydrolysis acidification process, but with the continuous deepening of industrial production, the treatment difficulty of the industrial wastewater is gradually increased, the concentration and the complexity of untreated wastewater (raw water) are gradually increased year by year, and the optimization of the hydrolysis acidification process is also in the hope. However, the high effluent total nitrogen/nitrate in the existing industrial wastewater and municipal sewage is difficult to discharge after reaching the standard, and the carbon source of the sewage plant is unreasonably used. The sewage of the garden enterprises is treated by a biochemical process before being discharged to a garden sewage plant, and part of the enterprises even adopt an advanced oxygen treatment process, so that the nitrate nitrogen proportion of the total nitrogen of the inlet water quality is large.
SUMMERY OF THE UTILITY MODEL
Based on this, the utility model aims at providing an upstream type hydrolysis acidification coupling preposition denitrification reactor, solve high water total nitrogen/nitrate and be difficult to discharge to reach standard and sewage plant carbon source use unreasonable problem.
An upflow hydrolysis acidification coupled pre-denitrification reactor, comprising:
the anaerobic sludge treatment device comprises a reactor body, wherein an anaerobic sludge expanded bed formed by hydraulic stirring is arranged in the reactor body;
a central shaft vertically disposed inside the reactor body;
the water inlet system is arranged on the reactor body, the water outlet end of the water inlet system is communicated with the lower part of the central vertical shaft, and the water inlet end of the water inlet system is connected with the raw water pipeline;
the water distribution system is arranged at the bottom of the central vertical shaft and is used for introducing sewage in the central vertical shaft into the reactor body and distributing the sewage at equal intervals;
the water outlet system is arranged at the top of the inner cavity of the reactor body;
the denitrification filler area is arranged on the upper layer of the inner cavity of the reactor body, and denitrification fillers are filled in the denitrification filler area.
The utility model discloses a leading denitrification reactor of STREAMING hydrolytic acidification coupling makes COD and TN get rid of in step through the combined use of STREAMING hydrolytic acidification and denitrification filler, reduces because of the not up to standard risk that causes of total nitrogen of play water and COD. Compared with the conventional AO/A 2 The hydrolysis acidification coupling preposed denitrification reactor can realize the optimal utilization efficiency of a carbon source, reduce the dosage of a denitrification carbon source in subsequent reactions, further improve the growth efficiency of autotrophic bacteria and effectively control the cost of sewage treatment, fully utilize the mechanism that hydrolysis acidification microorganisms are similar to the optimal reaction interval of denitrification, realize the high organic matter decomposition efficiency and the total nitrogen removal efficiency in the same process section, and solve the problems of high energy consumption and high carbon emission caused by excessive carbon source addition in a sewage plant.
Further preferably, the water inlet system comprises a water distribution channel arranged at the top of the reactor body and a water inlet pipe communicated with a water outlet of the water distribution channel, and one end of the water inlet pipe, which is far away from the water distribution channel, extends into the interior of the reactor body and is communicated with the central vertical shaft.
Further preferably, the denitrification filler is a tree-shaped biofilm filler.
Further preferably, the denitrifying filler may be enriched with diverse microbial communities including denitrifying microorganisms and probiotic enzymes secreted thereby.
Further preferably, the diverse microbial community includes lytic bacteria as well as synthetic bacteria.
Further preferably, the upflow hydrolysis acidification coupled pre-denitrification reactor further comprises a reflux system, and the reflux system comprises:
the mixed liquid reflux pump is arranged at the top end of the reactor body;
the adjustable water distributor is arranged at the top of the reactor body, and the water outlet end of the adjustable water distributor is communicated with the central vertical shaft through a pipeline;
and one end of the return pipe extends into the reactor body, and the other end of the return pipe is communicated with the mixed liquid return pump and the adjustable water distributor.
Further preferably, the water inlet height of the return pipe is equal to the middle-upper part of the height of the reactor body.
Further preferably, the reflux ratio of the reflux system is 0.6-1.2.
Further preferably, the denitrification filling area is positioned between 0.5m at the upper part of the water inlet of the return pipe and 0.3-0.5m below the water outlet system.
Further preferably, the upflow hydrolysis acidification coupling pre-denitrification reactor further comprises a sludge discharge pipe, wherein one end of the sludge discharge pipe is arranged inside the reactor body, and the other end of the sludge discharge pipe extends out of the reactor body.
Compared with the prior art, the utility model discloses a leading denitrification reactor of upflow hydrolytic acidification coupling makes COD and TN get rid of in step through upflow hydrolytic acidification and the combined use of denitrification filler, reduces because of the not up to standard risk that causes of total nitrogen of play water and COD. Compared with the conventional AO/A 2 The hydrolysis acidification coupling preposed denitrification reactor can realize the most beneficial utilization efficiency of a carbon source, reduce the dosage of a denitrification carbon source in subsequent reaction, further improve the growth efficiency of autotrophic bacteria and effectively control the cost of sewage treatment, fully utilize the mechanism that hydrolysis acidification microorganisms are similar to the optimal reaction zone of denitrification, realize high organic matter decomposition efficiency and total nitrogen removal efficiency in the same process section, and solve the problems of high energy consumption and high carbon emission caused by excessive carbon source addition in a sewage plant; different from the traditional activated sludge mode, denitrifying microorganisms in the hydrolysis acidification coupled pre-denitrification reactor are enriched in biofilm-forming fillers on the upper layer of the reactor, carbon sources after hydrolysis acidification can be preferentially utilized, the denitrification efficiency is better, and higher denitrification efficiency is still kept in incoming water with the water temperature lower than 12 ℃.
For a better understanding and practice, the invention is described in detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic structural diagram of an upflow hydrolysis acidification coupled pre-denitrification reactor of the present invention.
FIG. 2 is a schematic view of the structure of the vortex water distributor of the upflow hydrolysis acidification coupled pre-denitrification reactor of the present invention.
Fig. 3 is a partial sectional view of the vortex water distributor of the upflow hydrolysis acidification coupling pre-denitrification reactor of the present invention.
Detailed Description
The terms of orientation of up, down, left, right, front, back, top, bottom, and the like, referred to or may be referred to in this specification, are defined relative to their configuration, and are relative concepts. Therefore, it may be changed according to different positions and different use states. Therefore, these and other directional terms should not be construed as limiting terms.
The implementations described in the exemplary embodiments below do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of implementations consistent with certain aspects of the present disclosure.
The terminology used in the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
Referring to fig. 1, the present embodiment discloses an upflow hydrolysis acidification coupled pre-denitrification reactor, which includes a reactor body 1, a central shaft 2, a water inlet system 3, a water distribution system 4, a water outlet system 5 and a denitrification filler zone 6. Wherein, an anaerobic sludge expanded bed formed by hydraulic stirring is arranged in the reactor body 1; the central vertical shaft 2 is vertically arranged inside the reactor body 1; the water inlet system 3 is arranged on the reactor body 1, the water outlet end of the water inlet system is communicated with the central shaft 2, the water inlet end of the water inlet system is connected with a raw water pipeline, and the water distribution system 4 is arranged at the bottom of the central shaft 2 and is used for introducing sewage in the central shaft 2 into the reactor body 1 and performing equidistant distribution; the water outlet system 5 is arranged at the top of the inner cavity of the reactor body 1; the denitrification filler area 6 is arranged at the upper layer of the inner cavity of the reactor inner body 1, and denitrification filler is filled in the denitrification filler area.
In this embodiment, the central shaft 2 is provided to remove a large amount of bubbles in the raw water, and prevent the large amount of bubbles from entering the inside of the reactor body 1.
Water distribution system 4 distributes the raw water to microorganism anaerobism expanded bed, forms in the mud expanded bed and holds back and fully decomposes the raw water wrap in the organic matter suspended solid, improves the biodegradability of sewage, increases soluble organic matter content (SCOD), reduces the content of aquatic total organic matter (TCOD) and Suspended Solid (SS), and then provides high-quality carbon source for the denitrification.
Referring to fig. 2 and 3, specifically, the water distribution system 4 is formed by connecting a plurality of vortex water distributors arranged at equal intervals through a pipeline, so that anaerobic sludge is fully contacted with sewage, and pollutants can be fully reacted in the sewage.
Specifically, the vortex water distributor includes a water distributor body 41 and a reflector 42.
The water distributor body 41 comprises a water inlet section 411, a mixing section 412 and a diffusion section 413 which are connected in sequence.
The reflector 42 is disposed at the lower side of the water distributor body 41, and the reflector 42 has a reflecting surface facing the outlet of the diffuser 413.
By arranging the water distributor body 41 and the reflector 42, sewage is introduced by utilizing the water inlet section 411 of the water distributor body 41, the sewage is fully mixed by the mixing section 412, the sewage is further mixed by the diffusion section 413 and then changes the flow state by the reflecting surface of the reflector 42, an expansion hydraulic bag is formed in a certain range, sludge suspension is supported, and therefore an efficient sludge expansion bed is formed, mud and water are uniformly mixed, the sludge and the sewage are fully contacted and reacted, and the full contact of microorganisms and the sewage is enhanced.
Specifically, a sewage inlet 4111 is formed at one end of the water inlet section 411, which is far away from the mixing section 412.
The vortex water distributor further comprises a nozzle 43, the nozzle 43 is disposed in the water inlet section 411, an inlet of the nozzle 43 is connected to the sewage inlet 4111, and an outlet of the nozzle 43 faces the mixing section 412.
The sewage flowing in from the sewage inlet 4111 is introduced by the nozzle 43, and the sewage is sprayed and dispersed by the nozzle 43, so that the water distribution is uniform, and the hydraulic stirring effect can be improved.
Preferably, a plurality of backflow holes 4112 are formed in the peripheral side of the water inlet section 411, and the backflow holes 4112 are uniformly distributed along the peripheral side of the water inlet section 411. The backflow hole 4112 may receive the sludge-water mixture in the tank, and the sludge-water mixture may be fully mixed with the sewage flowing from the sewage inlet 4111 after flowing into the backflow hole 4112.
Further, the outlet of nozzle 3 is flush with the edge of recirculation hole 4112 near the mixing section 412. With such an arrangement, the sewage and the sludge-water mixed liquid sprayed from the outlet of the nozzle 43 enter the mixing section 412 and are mixed, and the sewage and the sludge-water mixed liquid impact at the mixing section 412 by the hydraulic force of the sewage passing through the nozzle 43, so that the sewage and the sludge-water mixed liquid are sufficiently mixed.
Preferably, the nozzle 43 includes a straight section 431 and a narrowed section 432.
One end of the straight section 431 is opened with an inlet of the nozzle 43.
The narrowing section 432 narrows and extends from one end to the other end thereof, one end of the narrowing section 432 is connected with the other end of the straight cylinder section 31, and the other end of the narrowing section 432 is provided with an outlet of the nozzle 43.
The straight section 431 of the nozzle 43 can introduce the sewage, and the hydraulic power of the sewage is further enhanced after the sewage enters the narrowing section 432 due to the narrowing and extending of the narrowing section 432, so that the sewage has stronger hydraulic power after being sprayed out from the outlet of the nozzle 43, and the mixing effect in the mixing section 412 is enhanced.
Further, the inner bore of the diffuser section 413 gradually increases from the junction thereof with the mixing section 412 to the outlet of the diffuser section 413. This is arranged to allow further contact and mixing of the contaminated water with air at the diffuser section 413, thereby creating a degree of expansion effect. In addition, the structure also enables the outlet of the diffuser section 13 to form a large diameter, thereby effectively preventing blockage.
It should be understood that the distributor body 41 needs to be provided in a cylindrical shape based on its basic function. Preferably, the water distributor body 41 of the present embodiment is cylindrical.
Preferably, the middle portion of the reflector 42 is protruded toward the outlet of the diffuser section 413 to form a protrusion 421, and the outer surface of the protrusion 421 forms a reflecting surface. The outer surface of the convex part 421 is used to form a reflecting surface, so that the sewage flowing out of the diffusion section 413 changes the flow state, an expansion hydraulic bag is formed in a certain range, and the sludge suspension is supported, thereby forming a high-efficiency sludge expansion bed.
Further, the protrusion 421 is a geometric body formed by rotating a circular arc segment by one circle around a connecting line between the center of the reflector 42 and the center of the diffuser 413. The geometry is shaped like a cone with the smallest cross-sectional area towards the end of the diffuser segment 413 and the larger the cross-sectional area the further away from the diffuser segment 413. After flowing out of the diffusion section 413, the contact area of the sewage and the reflecting surface is gradually increased, so that the flow state is gradually changed, an expansion hydraulic bag is formed in a certain range, and the sludge is supported to be suspended, so that a high-efficiency sludge expansion bed is formed.
Preferably, the vortex water distributor further comprises a plurality of fixing ribs 44, the plurality of fixing ribs 4 are connected between the diffuser 413 and the reflector 42, and the plurality of fixing ribs 44 are uniformly distributed along the circumferential direction. The fixing rib 44 has a simple structure, is convenient to assemble, and can firmly fix the water distributor body 41 and the reflector 42.
In some embodiments, the vortex water distributor is preferably made of composite materials, so that the corrosion resistance can be improved, and the service life can be prolonged.
The utility model discloses an energy consumption of vortex water-locator is low, and is efficient, and hydraulic drive when utilizing the water distribution need not extra electric power, and has improved the stability to the impact of water quality load and water yield of coming water.
The height of the suspended sludge expanded fermentation bed is controlled by controlling the number and frequency of the vortex water distributors, so that the microorganisms in the sewage treatment system are in full contact reaction with sewage, the reaction efficiency of the system is improved, the investment cost is saved, and the problems of high energy consumption and high carbon emission are solved.
The traditional hydrolysis acidification process usually adopts mechanical stirring, and the stirring mode is easy to have dead angles and has the problems of high energy consumption, poor operation effect and high carbon emission.
When the sewage treatment system is a hydrolysis acidification reaction system, a plurality of vortex water distributors are preferably arranged at equal intervals. Through equidistant arrangement, a plurality of local micro-stirring are formed by utilizing a plurality of distributed vortex water distributors, so that dead corners are eliminated, and the stirring effect is enhanced. Through utilizing the flow state of the sewage of vortex water-locator change system in, avoid sewage short-term flow in the pond, the mud scheduling problem that hardens, increase microbial system activity, promote the growth of extracellular polymers such as biological enzyme, promote the variety of microorganism population in the hydrolytic acidification reactor, improve the whole technology treatment effect of hydrolytic acidification, can high-efficiently change the quality of water of sewage.
The upflow hydrolysis acidification coupled pre-denitrification reactor of the embodiment can remove COD and TN synchronously by the combined use of upflow hydrolysis acidification and denitrification filler, thereby reducing the risk caused by the substandard COD due to the total nitrogen of effluent. Compared with the conventional AO/A 2 The hydrolysis acidification coupling pre-denitrification reactor can realize the most useful efficiency of a carbon source, reduce the dosage of a denitrification carbon source in subsequent reactions, further improve the growth efficiency of autotrophic bacteria and effectively control the cost of sewage treatment, fully utilize the mechanism that hydrolysis acidification microorganisms are similar to the optimal reaction interval of denitrification, realize high organic matter decomposition efficiency and total nitrogen removal efficiency in the same process section, and solve the problems of high energy consumption and high carbon emission caused by excessive carbon source addition in a sewage plant.
Further preferably, the water inlet system 3 comprises a water distribution channel 31 arranged at the top of the reactor body 1 and a water inlet pipe 32 communicated with the water outlet of the water distribution channel 31, and one end of the water inlet pipe 32 far away from the water distribution channel 31 extends into the interior of the reactor body 1 and is communicated with the central shaft 2.
Further preferably, the denitrification filler is a tree-shaped biofilm filler. The design of the tree-shaped biofilm culturing filler is suitable for the growth and enrichment of denitrifying microorganisms, and simultaneously, the filler hardening problem and the reactor short-flow problem caused by the use of fixed fillers are avoided.
Further preferably, the denitrifying filler is a denitrifying bacteria species, wherein the denitrifying bacteria species include a microbial flora and beneficial biological enzymes.
The denitrifying bacteria and sulfate reducing bacteria which are easy to grow in an anaerobic state form an efficient competition mechanism, and the growth of the sulfate reducing bacteria is inhibited, so that the accumulation of sulfides is reduced, and the toxicity of sewage and the concentration of hydrogen sulfide in air are reduced.
Further preferably, the multiple microbial communities include lytic bacteria and synthetic bacteria, and the multiple microbial communities coexist in a biological system and cooperatively function by virtue of mutual existence.
In order to achieve the effect of microbial decomposition and oxidation in a short time, the traditional treatment method generally treats the microorganisms by an inoculation activated sludge culture method, and the method needs to add a large amount of activated sludge, a carbon source, urea and the like, thus increasing the load of the system and being complex to operate.
The embodiment adopts a mode of constructing an optimal environment and adopts microbial technology, so that time and labor are saved, the treatment efficiency and the impact resistance of a system can be improved, the failure frequency and the failure degree are reduced, the organic nitrogen, turbidity and the removal rate of certain specific refractory substances can be greatly improved, and the effluent is colorless, foamless, clear and transparent.
Further preferably, the upflow hydrolysis acidification coupling pre-denitrification reactor further comprises a reflux system 7, the reflux system 7 comprises a mixed liquid reflux pump 71, a reflux pipe 72 and an adjustable water distributor 73, the mixed liquid reflux pump 71 is arranged at the top of the reactor body 1, one end of the reflux pipe 72 extends into the reactor body 1, the other end of the reflux pipe is communicated with the mixed liquid reflux pump 71 and the adjustable water distributor 73, the adjustable water distributor 73 is arranged at the top of the reactor body 1, and the water outlet end of the adjustable water distributor 73 is communicated with the central shaft 2 through a pipeline.
Further preferably, the water inlet height of the return pipe 72 is located at the middle upper part of the reactor body, so that the supernatant or the mixed liquid of anaerobic microorganisms can be selectively returned.
Further preferably, the reflux ratio of the reflux system 7 is 0.6-1.2, so as to ensure the water replenishing strength.
Further preferably, the denitrification filler zone 6 is positioned between 0.5m above the water inlet of the return pipe 72 and 0.3-0.5m below the water outlet system 5. The organic matter in the water quality at the upper part is decomposed by the sludge expansion bed at the lower part to fully break chains, wherein the organic matter can be more fully used for denitrification, and suspended matters are less at the height, which is beneficial to the enrichment of denitrifying microorganisms in the filler.
Further preferably, the upflow hydrolysis acidification coupling pre-denitrification reactor further comprises a sludge discharge pipe 8, one end of the sludge discharge pipe 8 is arranged inside the reactor body 1, and the other end of the sludge discharge pipe extends out of the reactor body 1.
In specific implementation, the pretreated raw water enters the central shaft 2 through the water distribution channel 31 and the water inlet pipe 32, and the sewage is uniformly distributed to the bottom of the reactor body 1 through the water distribution system 4. The sewage flows upwards into the anaerobic microorganism expansion bed of the reactor body 1. Pollutants in the sewage are fully contacted and reacted with microorganisms in the anaerobic microorganism expanded bed, large-particle organic matters in the pollutants are fully decomposed, long-chain organic matters are broken through the hydrolysis action of the microorganisms, and colloidal organic matters are intercepted and removed by the microorganism expanded bed and are fermented to generate a high-quality carbon source. Sewage slowly passes through the sludge expansion bed and is purified, a part of sewage flows back to an adjustable water distributor 73 at the upper part of the reactor body 1 by a return system 7, the adjustable water distributor 73 forms an instantaneous high-strength water distribution water inlet central shaft 2 under the action of siphonage, and the instantaneous high-strength water distribution water inlet central shaft 2 is mixed with raw water and returns to the reactor body 1 through a water distribution system 4, and the high-strength water distribution ensures the formation of the sludge expansion bed. Sewage in the reactor body 1 passes through the denitrification filler area 6, denitrifying microorganisms grow on the surface of the filler by utilizing the characteristic of attachment growth of the denitrifying microorganisms, and carry out denitrification reaction by utilizing a high-quality carbon source after chain scission of the sludge bulking bed and nitrate nitrogen in the incoming water. The treated sewage enters a subsequent treatment process through a water outlet system 5. The device needs to discharge sludge frequently, and partial residual sludge is discharged out of the reactor through the sludge discharge pipe 8.
Compared with the prior art, the utility model discloses a leading denitrification reactor of upflow hydrolytic acidification coupling makes COD and TN get rid of in step through upflow hydrolytic acidification and the combined use of denitrification filler, reduces because of the risk that total nitrogen of effluent and COD caused not up to standard. Compared with the conventional AO/A 2 The hydrolysis acidification coupling preposed denitrification reactor can realize the optimal utilization efficiency of a carbon source, reduce the dosage of a denitrification carbon source in subsequent reaction, further improve the growth efficiency of autotrophic bacteria and effectively control the cost of sewage treatment, fully utilize the mechanism that hydrolysis acidification microorganisms are similar to the optimal reaction zone of denitrification, realize the decomposition efficiency of high organic matters and the removal efficiency of total nitrogen in the same process section, and solve the problems of high energy consumption and high carbon emission caused by excessive carbon source addition in a sewage plant; compared with the traditional activated sludge mode, the hydrolysis acidification coupling pre-denitrification reactor has the advantages that denitrifying microorganisms are enriched in biofilm carriers on the upper layer of the reactor, carbon sources after hydrolysis acidification can be preferentially utilized, the denitrification efficiency is better, and the higher denitrification efficiency is still kept in incoming water with the water temperature lower than 12 ℃.
The above-mentioned embodiments only represent several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (10)
1. An upflow hydrolysis acidification coupling preposed denitrification reactor is characterized in that: the method comprises the following steps:
the anaerobic sludge treatment device comprises a reactor body, wherein an anaerobic sludge expanded bed formed by hydraulic stirring is filled in the reactor body;
a central shaft vertically disposed inside the reactor body;
the water inlet system is arranged on the reactor body, the water outlet end of the water inlet system is communicated with the lower part of the central vertical shaft, and the water inlet end of the water inlet system is connected with the raw water pipeline;
the water distribution system is arranged at the bottom of the central vertical shaft and is used for introducing sewage in the central vertical shaft into the reactor body and distributing the sewage at equal intervals;
the water outlet system is arranged at the top of the inner cavity of the reactor body;
the denitrification filler area is arranged on the upper layer of the inner cavity of the reactor body, and denitrification fillers are filled in the denitrification filler area.
2. The upflow hydrolysis acidification coupled pre-denitrification reactor as in claim 1, wherein: the water inlet system comprises a water distribution channel arranged at the top of the reactor body and a water inlet pipe communicated with a water outlet of the water distribution channel, and one end of the water inlet pipe, which is far away from the water distribution channel, extends into the reactor body and is communicated with the lower part of the central shaft.
3. The upflow hydrolysis acidification coupled pre-denitrification reactor as in claim 1, wherein: the denitrification filler is tree-shaped film-forming filler.
4. The upflow hydrolytic acidification coupled denitrification reactor as in claim 1, wherein: the denitrifying filler may be enriched with diverse microbial communities including denitrifying microorganisms and probiotic enzymes secreted thereby.
5. The upflow hydrolysis acidification coupled pre-denitrification reactor as in claim 4, wherein: the diverse microbial community includes lytic bacteria as well as synthetic bacteria.
6. The upflow hydrolytic acidification coupled pre-denitrification reactor as in any of claims 1-5, wherein: the upflow hydrolysis acidification coupling pre-denitrification reactor further comprises a reflux system, and the reflux system comprises:
the mixed liquid reflux pump is arranged at the top end of the reactor body;
the adjustable water distributor is arranged at the top of the reactor body, and the water outlet end of the adjustable water distributor is communicated with the central vertical shaft through a pipeline;
and one end of the return pipe extends into the reactor body, and the other end of the return pipe is communicated with the mixed liquid return pump and the adjustable water distributor.
7. The upflow hydrolytic acidification coupled denitrification reactor as in claim 6, wherein: the water inlet height of the return pipe is equal to the middle upper part of the height of the reactor body.
8. The upflow hydrolysis acidification coupled pre-denitrification reactor as in claim 6, wherein: the reflux ratio of the reflux system is 0.6-1.2.
9. The upflow hydrolytic acidification coupled denitrification reactor as in claim 6, wherein: the denitrification filling area is positioned between 0.5m from the upper part of the water inlet of the return pipe to 0.3-0.5m below the water outlet system.
10. The upflow hydrolytic acidification coupled pre-denitrification reactor as in any of claims 1-5, wherein: the upflow hydrolysis acidification coupling pre-denitrification reactor further comprises a sludge discharge pipe, wherein one end of the sludge discharge pipe is arranged in the reactor body, and the other end of the sludge discharge pipe extends out of the reactor body.
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