CN111233151A - Efficient synchronous nitrogen and phosphorus removal system and method for high-nitrogen and phosphorus wastewater - Google Patents
Efficient synchronous nitrogen and phosphorus removal system and method for high-nitrogen and phosphorus wastewater Download PDFInfo
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- CN111233151A CN111233151A CN202010185347.3A CN202010185347A CN111233151A CN 111233151 A CN111233151 A CN 111233151A CN 202010185347 A CN202010185347 A CN 202010185347A CN 111233151 A CN111233151 A CN 111233151A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/308—Biological phosphorus removal
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/32—Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters
- C02F2103/325—Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters from processes relating to the production of wine products
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/16—Total nitrogen (tkN-N)
Abstract
The invention relates to a high-efficiency synchronous nitrogen and phosphorus removal system and method for high-nitrogen and phosphorus wastewater.A high-efficiency sectional water inlet reactor is a box body sealing structure, a water inlet and a water outlet are respectively arranged at two ends of a box body, 2-4 sections of reactors are sequentially arranged along the direction from the water inlet to the water outlet, each section of reactor comprises an anoxic tank reactor and an aerobic tank reactor, the anoxic tank reactor and the aerobic tank reactor are arranged at intervals in the box body, and a plurality of reactors are communicated with one another. The water outlet of the anaerobic reactor is respectively connected with the two high-efficiency sectional type water inlet reactors. The flow ratio of the effluent of the anaerobic reactor entering the first-stage anoxic tank reactor, the second-stage anoxic tank reactor and the third-stage anoxic tank reactor is 10-40%: 10-60%: 10 to 30 percent. The wastewater with high total nitrogen and phosphorus removal rate is high, and the sludge production is small.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to a high-efficiency synchronous nitrogen and phosphorus removal system and method for high-nitrogen and phosphorus wastewater.
Background
The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.
The industrial wastewater, especially starch wastewater, alcohol wastewater and fermentation wastewater has the water quality characteristics of high total nitrogen (more than 500 mg/L) and high total phosphorus (more than 70 mg/L). For the high total nitrogen wastewater, the total nitrogen is removed mainly by a nitrification process and a denitrification process; for the wastewater with high total phosphorus, the biochemical process and the physicochemical process are mainly combined. The current common processes comprise anaerobic process, anoxic process and aerobic process and the combination of the three processes, and the processes have better operation stability but have the following problems: 1) the total nitrogen concentration is high, a large floor area is needed, and the capital investment cost is high; 2) the sludge ages of the denitrification and dephosphorization strains are contradictory, so that a higher process for synchronously removing nitrogen and phosphorus is difficult to achieve; 3) a large amount of carbon sources need to be supplemented for removing the total nitrogen, so that a large amount of aerobic sludge is generated, and higher disposal cost is generated; 4) with the stricter of the environmental-friendly discharge policy, the removal efficiency of the process is difficult to ensure to meet the requirement of the quality index of the discharged sewage; 5) the total phosphorus is removed mainly by a physical and chemical process, and the dosing operation cost is high.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a high-efficiency synchronous nitrogen and phosphorus removal system and method for high-nitrogen and phosphorus wastewater.
In order to solve the technical problems, the technical scheme of the invention is as follows:
on the first hand, a high-efficiency sectional type (AMAO) water inlet reactor is a box body sealing structure, a water inlet and a water outlet are respectively arranged at two ends of a box body, 2-4 sections of reactors are sequentially arranged along the direction from the water inlet to the water outlet, each section of reactor comprises an anoxic tank reactor and an aerobic tank reactor, the anoxic tank reactor and the aerobic tank reactor are arranged in the box body at intervals, and a plurality of reactors are communicated with one another.
The efficient sectional type water inlet reactor is provided with the anoxic tank and the aerobic tank which are alternately arranged, sewage enters the reactor and is treated under the condition of alternate treatment of anoxic and aerobic, the arrangement mode is favorable for the growth of zoogloea bacteria in each single reactor, the excessive growth and propagation of filamentous bacteria are inhibited by applying a biological competition mechanism, and the filamentous bacteria are controlled within a reasonable range, so that the sludge bulking is reduced.
In some embodiments, a first section of anoxic tank reactor, a first section of aerobic tank reactor, a second section of anoxic tank reactor, a second section of aerobic tank reactor, a third section of anoxic tank reactor and a third section of aerobic tank reactor are arranged in sequence along the direction from a water inlet to a water outlet, the tops of the two reactors which are independent longitudinally are communicated, the volume of the first section of aerobic tank reactor, the volume of the first section of anoxic tank reactor and the volume of the second section of anoxic tank reactor are equal, the volume of the second section of aerobic tank reactor is 1.5 times of the volume of the first section of anoxic tank reactor, the volume of the third section of anoxic tank reactor is 1.5 times of the volume of the first section of anoxic tank reactor, the volume of the third section of aerobic tank reactor is 2 times of the volume of the first section of anoxic tank reactor, the two reactors which are adjacent transversely are communicated through a communicating pipe, and the water inlet.
The volume is designed according to the difference of the total nitrogen concentration of water, the difference of the multiple is the difference of the nitrification rate and the denitrification rate, the purpose is to reduce the reflux ratio of the nitrified liquid, reduce the operation and investment cost and greatly improve the denitrification efficiency.
In some embodiments, the water inlet pipe is connected with the high-efficiency sectional type water inlet reactor, the water inlet pipe is divided into three water inlet branch pipes, and the three water inlet branch pipes are respectively connected with the first-stage anoxic tank reactor, the second-stage anoxic tank reactor and the third-stage anoxic tank reactor. Oxygen deficiency mainly requires a carbon source for denitrification, and COD is consumed at the carbon source; in addition, nitrate nitrogen in the water is removed at the position; the water inlet pipe is directly communicated with the aerobic tank, and the COD at the discharge port is risky.
In some embodiments, the water outlet is connected with a section of the anoxic reactor through a sludge return pipe.
In a second aspect, a high-efficiency synchronous nitrogen and phosphorus removal system for high-nitrogen and phosphorus wastewater comprises an anaerobic reactor, two high-efficiency sectional type water inlet reactors and a solid-liquid separation device, wherein a water outlet of the anaerobic reactor is connected with the solid-liquid separation device, a liquid outlet of the solid-liquid separation device is respectively connected with the two high-efficiency sectional type water inlet reactors, and a water inlet pipe is respectively connected with the anaerobic reactor and the two high-efficiency sectional type water inlet reactors and connected with the solid-liquid separation device through a surpassing pipe.
The surpassing pipe and the water inlet pipe are sewage inlet pipes, sewage introduced into the surpassing pipe is nondegradable wastewater generated in workshop production and is suitable for sewage of a denitrification carbon source, and the inlet water of the water inlet pipe is a main nitrogen and phosphorus element source compared with the sewage of the surpassing pipe, and is more suitable for nitrogen and phosphorus removal reaction after anaerobic treatment.
In some embodiments, the two high efficiency segmented water-entering reactors are divided into a first high efficiency segmented water-entering reactor and a second high efficiency segmented water-entering reactor, and the effluent of the first high efficiency segmented reactor enters the second high efficiency segmented water-entering reactor. The invention designs two high-efficiency sectional type water inlet reactors to cancel or reduce reflux of digestive juice and further treat sewage.
In some embodiments, the high-efficiency simultaneous nitrogen and phosphorus removal system comprises a precipitation device, the effluent of the two-stage high-efficiency sectional type water inlet reactor enters the precipitation device, and the sludge of the precipitation device enters the one-stage high-efficiency sectional type reactor through a sludge pipeline. And (3) periodically supplementing sludge into the section of the high-efficiency sectional reactor through a settling device.
In some embodiments, a first layer of three-phase separator and a second layer of three-phase separator are sequentially arranged inside the anaerobic reactor from bottom to top, a gas-water separator is arranged outside the top of the anaerobic reactor, the first layer of three-phase separator and the second layer of three-phase separator are respectively connected with the gas-water separator through ascending pipes, a water distributor is arranged at the bottom inside the anaerobic reactor, the water distributor is connected with the gas-water separator through a settling pipe, a water-sealed tank and a torch are arranged outside the anaerobic reactor, the gas-water separator is connected with the water-sealed tank, and the water-sealed tank is connected with the torch.
In some embodiments, the high-efficiency synchronous nitrogen and phosphorus removal system comprises a fan, an aeration device is arranged inside an aerobic pool reactor of the two-stage high-efficiency sectional type water inlet reactor, and the fan is connected with the aeration device of the two-stage high-efficiency sectional type water inlet reactor.
In some embodiments, the high-efficiency synchronous nitrogen and phosphorus removal system comprises a biogas device and a torch, wherein the top gas outlet of the anaerobic reactor is connected with the biogas device, and the biogas device is connected with the torch.
In some embodiments, the water outlet of the anaerobic reactor is provided with a water return pipe connected with a water inlet pipe.
In a third aspect, the efficient synchronous nitrogen and phosphorus removal method using the system comprises the following specific steps:
a part of raw sewage enters an anaerobic reactor to obtain treated water and degradation-resistant wastewater, the treated water and the degradation-resistant wastewater enter a solid-liquid separation device and then respectively enter two high-efficiency sectional type water inlet reactors, the other part of raw sewage respectively enters the two high-efficiency sectional type water inlet reactors, anoxic and aerobic treatment is carried out in the two high-efficiency sectional type water inlet reactors, and anaerobic reaction is carried out in the anaerobic reactor.
In some embodiments, the effluent from the anaerobic reactor has a pH of 7-8 and the influent temperature is 25-35 ℃.
In some embodiments, the flow ratio of the effluent of the anaerobic reactor entering the first-stage anoxic tank reactor, the second-stage anoxic tank reactor and the third-stage anoxic tank reactor is 10-40%: 10-60%: 10 to 30 percent. The anaerobic reactor removes about 90 percent of COD (chemical oxygen demand) in the sewage, and simultaneously performs ammoniation conversion of organic nitrogen and anaerobic phosphorus release. The last section of reactor is butted with a discharge port, and the proportion of the last water inlet is about 10 percent of the normal proportion in consideration of the total nitrogen requirement of the discharge port, so that the reflux of digestive juice is cancelled or greatly reduced, and the energy consumption is reduced; the flow ratio of the first section and the second section is data obtained by summarizing the inventor according to different water qualities and enhanced nitrogen and phosphorus removal effects.
In some embodiments, the flow rates of raw sewage and anaerobic reactor effluent of the high efficiency staged water inlet reactor are determined according to the total nitrogen load in the water.
In some embodiments, the sludge reflux ratio in the high efficiency staged water feed reactor is controlled to 50-200% and the sludge concentration MLSS in each individual reactor is 2000-8000 mg/L.
In some embodiments, the control parameters in the aerobic tank reactor of the high efficiency staged feed reactor are DO0-4mg/L (other than 0) and the C/N ratio is 1-4. The nitrification reaction is controlled in the nitrosation section, the supplement of the carbon source amount is reduced, the generation amount of the aerobic sludge is indirectly reduced, and the disposal cost of the aerobic sludge is reduced.
The invention has the beneficial effects that:
1) the occupied area is saved, and the capital construction investment cost is reduced;
2) the removal effect of total nitrogen and total phosphorus is improved;
3) the sludge production amount of the aerobic tank is reduced, and the sludge treatment cost is reduced;
4) the requirements of the air quantity of the fan and the flow of the reflux pump are reduced, and the investment cost and the operation cost are saved;
5) the addition of a medicament for supplementing alkalinity is not needed, so that the cost of the medicament is saved;
6) the automatic instrument configuration of realization of great degree, including target pollutant concentration, ph, concentration meter etc. reduces personnel's input and loaded down with trivial details operation.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the invention and not to limit the invention.
FIG. 1 is a structural diagram of a high-efficiency synchronous denitrification and dephosphorization system for high-nitrogen and phosphorus wastewater according to the invention;
FIG. 2 is a top view of a high efficiency staged (AMAO) water intake reactor of the present invention;
wherein, 1-water inlet pipe; 2-water distribution valve group; 3-a reflux pump; 4-an anaerobic reactor; 5-a surpassing pipe; 6-a water drainage and inlet pipe; 7-a solid-liquid separation device; 8-high efficiency segmented water-intake reactor; 9-sludge reflux pump; 10-a precipitation device; 11-a fan; 12-a water distributor; 13-a first layer of three-phase separators; 14-a second layer three-phase separator; 15-a settling tube; 16-a steam-water separator; 17-a biogas pipe; 18-a riser; 19-a sampling tube; 20-water sealing the tank; 21-torch; 22-high efficiency segmented reaction system; 23-a section of anoxic tank reactor; 24-communicating tube; 25-a section of aerobic tank reactor; 26-a two-stage anoxic tank reactor; 27-two-section aerobic tank reactor; 28-three sections of anoxic tank reactors; 29-three sections of aerobic tank reactors; 30-water outlet pipe; 31-a sludge return pipe; 32-a main water inlet pipe; 33-a section of water inlet branch pipe; 34-two sections of water inlet branch pipes; 35-three sections of water inlet branch pipes; 36-Sewage flow direction.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The anaerobic reactor is a PEIC anaerobic reactor 4 (or called anaerobic reactor), a first layer of three-phase separator 13 and a second layer of three-phase separator 14 are arranged in the PEIC anaerobic reactor 4, a water distributor 12 is arranged at the lower part of the first layer of three-phase separator 13, the water distributor 12 is connected with a steam-water separator 16 through a settling pipe (inner return pipe) 15, the steam-water separator 16 is connected with a water-sealed tank 20 through a biogas pipe 17, the water-sealed tank 20 is connected with a torch 21, and the second layer of three-phase separator 14 and the first layer of three-phase separator 13 are respectively connected with the steam-water separator 16 through an ascending pipe 18.
The inlet water enters from the bottom of the anaerobic reactor 4 and is uniformly mixed with anaerobic microorganisms, most organic matters are converted into biogas, the generated biogas is collected by the first layer of three-phase separator 13, the biogas rises through the riser 18 and enters the steam-water separator 16, the separated biogas is discharged from the biogas pipe 17, the separated sludge-water mixed liquid returns to the bottom of the anaerobic reactor 4 along the settling pipe 15, the working process of the second layer of three-phase separator 14 is the same as that of the first layer of three-phase separator 13, a part of the treated water separated by the first layer of three-phase separator 13 and the second layer of three-phase separator 14 overflows from the water outlet at one side of the top of the anaerobic reactor 4 and is discharged into the water discharge inlet pipe 6, and the other part returns to the bottom of the anaerobic reactor 4 through the reflux pump 3 and the water distribution valve.
The internal reflux of the anaerobic reactor 4 is realized by utilizing the steam stripping principle, the lifting of the methane drives the lifting of water flow, and the pressure difference exists between the air chambers of the upper layer and the lower layer.
The bottom of the anaerobic reactor 4 is connected with a sampling pipe 19, so that the sewage in the anaerobic reactor 4 can be monitored.
As shown in fig. 2, a first-stage anoxic tank reactor 23, a first-stage aerobic tank reactor 25, a second-stage anoxic tank reactor 26, a second-stage aerobic tank reactor 27, a third-stage anoxic tank reactor 28, and a third-stage aerobic tank reactor 29 are sequentially arranged along a direction from a water inlet to a water outlet in a high-efficiency sectional type (AMAO) water inlet reactor, wherein the volume of the second-stage aerobic tank reactor 27 is 1.5 times that of the first-stage anoxic tank reactor 23, the volume of the third-stage anoxic tank reactor 29 is 1.5 times that of the first-stage anoxic tank reactor 23, the volume of the third-stage aerobic tank reactor 29 is equal to 2 times that of the first-stage anoxic tank reactor 23, two transversely adjacent reactors are communicated with each other through a communicating pipe 24, and an outlet of the third-stage aerobic tank reactor 29 is discharged through.
The water outlet position of the high-efficiency sectional type water inlet reactor is connected with a section of anoxic tank reactor through a sludge return pipe 31.
From fig. 2, the effluent flow direction 36 can be seen, illustrating that the internal water flow of the high efficiency staged (AMAO) influent reaction system 22 of the high efficiency staged influent reactor 8 of the present invention is baffled diagonal from one end of each reactor into and out of the opposite end.
The water inlet pipe is connected with the three-section anoxic tank reactor through three water inlet branch pipes of a water inlet main pipe 32 and dust, the outlet water of the anaerobic reactor enters the three branch pipes respectively, the three water inlet branch pipes are respectively a first-section water inlet branch pipe 33, a second-section water inlet branch pipe 34 and a third-section water inlet branch pipe 35, and the flow distribution ratio of the three branch pipes is 10-40%: 10-60%: 10-30%, the three sections of water respectively enter the water tank to improve the treatment effect, the three sections of water inflow are different, the second section of water inflow is larger, the first section of water inflow and the third section of water inflow are smaller, the reasonable distribution of the water inflow is realized, the treatment effect of sewage is favorably improved, and the reflux ratio of the nitrifying liquid is reduced.
The reactor is internally provided with a PH meter, a DO meter, a sludge concentration meter, a COD probe, an ammonia nitrogen probe, a total phosphorus probe and the like, and the reactor is linked with related instrument valves to operate by combining the feedback of probe data with the linkage of a PLC program.
As shown in figure 1, the high-efficiency synchronous nitrogen and phosphorus removal system comprises an anaerobic reactor, two high-efficiency sectional type water inlet reactors 8 and a solid-liquid separation device 7, wherein a water outlet of the anaerobic reactor 4 is connected with the solid-liquid separation device 7, a liquid outlet of the solid-liquid separation device 7 is respectively connected with the two high-efficiency sectional type water inlet reactors 8, a water inlet pipe 4 is respectively connected with the anaerobic reactor 4 and the two high-efficiency sectional type water inlet reactors 8, and a surpassing pipe 5 is connected with the solid-liquid separation device 7.
The two high-efficiency sectional type water inlet reactors 8 are respectively a first-section high-efficiency sectional type water inlet reactor and a second-section high-efficiency sectional type water inlet reactor, and the effluent of the first-section high-efficiency sectional type reactor enters the second-section high-efficiency sectional type water inlet reactor.
The refractory wastewater and the raw sewage exceeding the pipe 5 are mixed with the effluent of the anaerobic reactor 4 and then divided into three branch pipes which respectively enter the three-section anoxic tank reactors. And respectively treating the degradation-resistant wastewater and the raw sewage by three sections of anoxic tank reactors and aerobic tank reactors to finally obtain treated water. The hardly degradable waste water introduced beyond the pipe 5 means hardly degradable waste water produced in the workshop production and sewage suitable for denitrifying a carbon source.
The effluent of the two-stage high-efficiency sectional type water inlet reactor enters a precipitation device 10, and the sludge of the precipitation device 10 enters the one-stage high-efficiency sectional type reactor through a sludge pipeline. The effluent of the two-section high-efficiency sectional type water inlet reactor carries some sludge, and the effluent of the one-section high-efficiency sectional type water inlet reactor enters the two-section high-efficiency sectional type water inlet reactor, so that the sedimentation device supplements the sludge into the one-section high-efficiency sectional type water inlet reactor through the sludge reflux pump 9.
The bottom of the aerobic tank reactor of the reactor is provided with an aeration device, and a fan 11 is connected with the aeration device. Air can be supplemented into the aerobic tank, which is beneficial to the aerobic microorganism to treat the characteristic pollution factor of the sewage.
The high-efficiency synchronous nitrogen and phosphorus removal method comprises the steps that a part of raw sewage enters an anaerobic reactor 4 to obtain treated water and refractory wastewater, the treated water and the refractory wastewater enter a solid-liquid separation device 7 and then respectively enter two high-efficiency sectional type water inlet reactors 8, the other part of raw sewage respectively enters the two high-efficiency sectional type water inlet reactors 8, anoxic and aerobic treatment is carried out in the two high-efficiency sectional type water inlet reactors 8, and anaerobic reaction is carried out in the anaerobic reactor 4.
The invention relates to a high-efficiency synchronous nitrogen and phosphorus removal method, which is a method and a system for treating water with high total nitrogen (more than 500 mg/L) and high total phosphorus (more than 70 mg/L). Taking the three-stage high-efficiency sectional type water inlet reactor as an example, the total nitrogen of the raw sewage is 600mg/L, and the total phosphorus is 100 mg/L. The total nitrogen concentration of the effluent of the high-efficiency sectional type water inlet reactor obtained by the treatment of the high-efficiency synchronous nitrogen and phosphorus removal system is within 15mg/L, and the total phosphorus concentration is within 20 mg/L.
The high-efficiency synchronous nitrogen and phosphorus removal method and system have better removal rate of total nitrogen and total phosphorus. Moreover, the arrangement of the high-efficiency sectional type (AMAO) water inlet reactor solves the problem of contradiction between sludge ages of denitrification and dephosphorization strains; the method solves the problems that a large amount of carbon sources need to be supplemented to remove the total nitrogen, and a large amount of aerobic sludge is generated, the aerobic sludge is refluxed, overgrowth and reproduction of filamentous fungi are inhibited by a biological competition mechanism through the arrangement of a high-efficiency sectional type (AMAO) water inlet reactor, and the filamentous fungi are controlled in a reasonable range, so that the generation of filamentous sludge bulking is reduced; the arrangement of the high-efficiency sectional type (AMAO) water inlet reactor has the characteristics of small occupied area and good treatment effect; the provision of the high efficiency staged (AMAO) water reactor reduces the nitrification liquid reflux ratio.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A high efficiency staged (AMAO) water reactor, characterized by: the two ends of the box body are respectively provided with a water inlet and a water outlet, 2-4 sections of reactors are sequentially arranged along the direction from the water inlet to the water outlet, each section of reactor comprises an anoxic tank reactor and an aerobic tank reactor, the anoxic tank reactor and the aerobic tank reactor are arranged in the box body at intervals, and the reactors are mutually communicated.
2. A high efficiency segmented (AMAO) water-intake reactor according to claim 1, wherein: the anaerobic reactor is characterized in that a first section of anaerobic tank reactor, a first section of aerobic tank reactor, a second section of anaerobic tank reactor, a second section of aerobic tank reactor, a third section of anaerobic tank reactor and a third section of aerobic tank reactor are arranged in sequence along the direction from a water inlet to a water outlet, the tops of the two reactors which are independent longitudinally are communicated, the volume of the first section of aerobic tank reactor, the volume of the first section of anaerobic tank reactor and the volume of the second section of anaerobic tank reactor are equal, the volume of the second section of aerobic tank reactor is 1.5 times of the volume of the first section of anaerobic tank reactor, the volume of the third section of anaerobic tank reactor is 1.5 times of the volume of the first section of anaerobic tank reactor, the volume of the third section of aerobic tank reactor is equal to 2 times of the volume of the first section of anaerobic tank reactor, the two reactors which are adjacent transversely are communicated.
3. A high efficiency segmented (AMAO) water-intake reactor according to claim 1, wherein: the water inlet pipe is connected with the high-efficiency sectional type water inlet reactor, the water inlet pipe is divided into three water inlet branch pipes, and the three water inlet branch pipes are respectively connected with the first-section anoxic tank reactor, the second-section anoxic tank reactor and the third-section anoxic tank reactor.
4. A high efficiency segmented (AMAO) water-intake reactor according to claim 1, wherein: the water outlet is connected with a section of anoxic tank reactor through a sludge return pipe.
5. The utility model provides a high-efficient synchronous nitrogen and phosphorus removal system to high nitrogen phosphorus waste water which characterized in that: the anaerobic reactor, two high-efficiency sectional type water inlet reactors according to any one of claims 1 to 4 and a solid-liquid separation device are included, wherein the water outlet of the anaerobic reactor is connected with the solid-liquid separation device, the liquid outlet of the solid-liquid separation device is respectively connected with the two high-efficiency sectional type water inlet reactors, the water inlet pipe is respectively connected with the anaerobic reactor and the two high-efficiency sectional type water inlet reactors, and the surpassing pipe is connected with the solid-liquid separation device.
6. The high-efficiency synchronous nitrogen and phosphorus removal system for high-nitrogen and phosphorus wastewater as claimed in claim 5, characterized in that: the two high-efficiency sectional type water inlet reactors are divided into a first-stage high-efficiency sectional type water inlet reactor and a second-stage high-efficiency sectional type water inlet reactor, and the effluent of the first-stage high-efficiency sectional type reactor enters the second-stage high-efficiency sectional type water inlet reactor.
7. The high-efficiency synchronous nitrogen and phosphorus removal system for high-nitrogen and phosphorus wastewater as claimed in claim 5, characterized in that: the high-efficiency synchronous nitrogen and phosphorus removal system comprises a precipitation device, the effluent of the two-stage high-efficiency sectional type water inlet reactor enters the precipitation device, and the sludge of the precipitation device enters the one-stage high-efficiency sectional type reactor through a sludge pipeline.
8. The high-efficiency synchronous nitrogen and phosphorus removal system for high-nitrogen and phosphorus wastewater as claimed in claim 5, characterized in that: the high-efficiency synchronous nitrogen and phosphorus removal system comprises a fan, an aeration device is arranged in an aerobic pool reactor of the two-stage high-efficiency sectional type water inlet reactor, and the fan is connected with the aeration device of the two-stage high-efficiency sectional type water inlet reactor;
or the high-efficiency synchronous nitrogen and phosphorus removal system comprises a biogas device and a torch, wherein a gas outlet at the top of the anaerobic reactor is connected with the biogas device, and the biogas device is connected with the torch;
the water outlet of the anaerobic reactor is provided with a water return pipe connected with a water inlet pipe.
9. The method for synchronous denitrification and dephosphorization with high efficiency by using the system of any one of claims 5 to 8 is characterized in that: the method comprises the following specific steps:
a part of raw sewage enters an anaerobic reactor to obtain treated water and refractory wastewater, the treated water and the refractory wastewater enter a solid-liquid separation device and then respectively enter two high-efficiency sectional type water inlet reactors, the other part of raw sewage respectively enters the two high-efficiency sectional type water inlet reactors, anoxic and aerobic treatment is carried out in the two high-efficiency sectional type water inlet reactors, and anaerobic reaction is carried out in the anaerobic reactor;
preferably, the effluent pH of the anaerobic reactor is 7-8, and the inlet water temperature is 25-35 ℃;
preferably, the flow rates of raw sewage of the high-efficiency sectional type water inlet reactor and effluent of the anaerobic reactor are mixed according to the C/N ratio of 2-4: 1;
preferably, the sludge reflux ratio in the high-efficiency sectional type water inlet reactor is controlled to be 50-200%, and the sludge concentration MLSS in each individual reactor is 2000-8000 mg/L;
preferably, the controlled parameters in the reactor are DO0-4mg/L, C/N ratios of 1-4.
10. The method of claim 9, wherein: the flow ratio of the effluent of the anaerobic reactor entering the first-stage anoxic tank reactor, the second-stage anoxic tank reactor and the third-stage anoxic tank reactor is 10-40%: 10-60%: 10 to 30 percent.
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