CN218841885U - Module integrated wastewater treatment reactor - Google Patents

Abstract

The utility model discloses a module integrated wastewater treatment reactor, wherein the space in the reactor is divided by a plurality of concentric circular clapboards to form a middle biological reaction functional area and at least one annular functional area surrounding the middle biological reaction functional area; the middle biological reaction functional zone forms an anaerobic bioreactor; in the first annular functional area, a sub-functional area comprising an aerobic tank, an anoxic tank and an anaerobic tank is divided by a radial partition board, the partition board is provided with a through hole, an underwater propeller is arranged in the first annular functional area to enable water to flow and circulate along an annular gallery, an aerator is arranged in the aerobic tank, and a sedimentation area formed at the tail end of the aerobic tank is provided with a sludge discharge pipe and a water outlet pipe; the anaerobic bioreactor is communicated to the anaerobic tank of the first annular functional area through an overflow pipeline. The reactor has compact layout, the construction cost can be reduced by 15 percent, the heat efficiency in the wastewater treatment process is high, the microbial flora is classified and abundant, the COD removal rate reaches more than 95 percent, and the total nitrogen and total phosphorus removal rate also reaches more than 95 percent.

Description

Module integrated wastewater treatment reactor

Technical Field

The utility model relates to a wastewater treatment reactor, in particular to a module integrated wastewater treatment reactor.

Background

In the wastewater treatment process, the treatment processes of sand removal, efficient anaerobic biological treatment, aerobic biological treatment, coagulation sedimentation and the like are generally carried out, and the corresponding wastewater treatment system generally comprises a grit chamber, an anaerobic reaction tank, a facultative reaction tank, an aeration tank (tank), a coagulation tank (tank), a sedimentation tank (tank) and the like and is conveyed by a pump. The reactor usually needs a stirrer for stirring and mixing to promote the reaction, and the independent equipment needs heat preservation and other measures because the reaction temperature needs to be controlled. The problem that prior art brought is, circular pond because the atress condition is good, save material, investment saving, but because can not adopt the design of sharing the wall, lead to area big. The square pool has poor stress condition, and more building materials and large investment.

There is a difference in the choice of wastewater treatment bioreactors between a fully mixed reactor (CSTR) and a Plug Flow Reactor (PFR). Plug flow reactor tank types, typically rectangular tanks of baffled hydraulic flow regime, are used, with wastewater flowing in from one end and out from the other end, forming a long flow regime of very high aspect ratio in the form of water flow, typically 5-10: 1, continuously changing the concentration and the type of organic matters in the plug flow type aerobic tank along the way. The sludge load and the oxygen consumption rate are high before and low after, the sludge load and the oxygen consumption rate occupy a section on a sludge growth curve, and the types and the quantity of microorganisms on each on-way section at the front end and the rear end of the tank have gradient difference, so the degradation rate is high, the operation is flexible, and the method is particularly suitable for selecting a wastewater treatment process with high effluent quality requirement. Fully mixed reactors (CSTR) typically employ a tank type aspect ratio of 1:1, the sludge load of the whole tank is the same as the oxygen consumption rate. The reactor has the characteristics of impact load resistance, simple operation control and lower effluent purification index relative to the effluent quality requirement of a plug flow reactor due to the short flow phenomenon.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned circular pond and the rectangle pond that exists at waste water treatment system, push away STREAMING reactor and the respective advantage and the disadvantage of complete hybrid reactor, the utility model aims at providing a module integrated form waste water treatment reactor, existing circular pond's advantage has the STREAMING reactor characteristic again, can realize anaerobism biological treatment, aerobic biological treatment, the concentrated combination of core processes such as coagulating sedimentation, hydraulic power flow state and biological distribution form are good, are favorable to carrying out reaction control to this kind of reactor compact structure area is little, and is with low costs, and waste water purification standard is high.

The utility model discloses a realize through following technical scheme: a module integrated wastewater treatment reactor is divided by a plurality of concentric circular clapboards to form a middle biological reaction functional area and at least one annular functional area surrounding the middle biological reaction functional area; the middle biological reaction functional zone forms a high-efficiency anaerobic bioreactor; in the first annular functional zone, a sub-functional zone comprising an aerobic tank and an annular anaerobic tank is divided by a radial partition plate, a through hole is formed in the partition plate so that water can pass through, an underwater propeller is arranged in the first annular functional zone so that the water flows and circulates along an annular gallery, an aerator is arranged in the aerobic tank, and a settling zone formed at the tail end of the aerobic tank is provided with a sludge discharge pipe and a water outlet pipe; the middle biological reaction functional area is communicated to the anaerobic tank of the first annular functional area through an overflow pipeline.

Furthermore, an anoxic tank is arranged between the anaerobic tank and the aerobic tank in the first annular functional zone, an aerator with aeration quantity less than that of the aerobic tank is arranged in the anoxic tank, and a denitrification zone from the anaerobic tank to the aerobic tank is formed, namely the wastewater sequentially flows through anaerobic-anoxic-aerobic to form plug flow (approximate plug flow).

Furthermore, the bottom of the partition board in the first annular functional area is provided with a through hole, namely, partition boards with through holes are arranged between the first section of the anoxic tank and the first section of the aerobic tank, between the anoxic tank and the anaerobic tank and between the tail end of the aerobic tank and the anaerobic tank, and the underwater propeller is arranged at the position of the through hole.

Further, the hydraulic flow state of the aerobic pool in the first annular functional area is annular plug flow type, and the length-width ratio is more than 10:1.

furthermore, a water distributor is arranged at the bottom of the middle biological reaction functional area, a three-phase separator is arranged at the middle part, and a water outlet weir is arranged at the top part to form a UAS anaerobic biological reactor.

And the regulating tank is provided with a sedimentation function and is connected with a water distributor at the bottom of the middle reaction functional area through a pump and a lifting pipeline in a sedimentation area of the regulating tank.

Furthermore, a floating decanting weir is arranged in the regulating tank, and the pump is arranged in the floating decanting weir.

Furthermore, a coagulation sedimentation tank is isolated from the second annular functional zone through a partition plate, a sedimentation inclined plate is arranged in the middle of the coagulation sedimentation tank in the vertical (height) direction, and a water outlet pipe of the aerobic tank of the first annular functional zone is connected with a submersible pump in the floating decanting weir so as to convey clear water of the aerobic tank to the coagulation sedimentation tank for coagulation sedimentation.

Furthermore, different from the way of separating out the coagulation sedimentation tank area at the second annular function outlet, a third annular function area can be provided to form the coagulation sedimentation tank, and the quality of the outlet water is improved by adding a coagulation medicament, so that the sedimentation area can be increased, the water depth can be reduced, and sedimentation is facilitated.

Furthermore, the height of the partition functional areas of the concentric circular partition plates is arranged from inside to outside from top to bottom, so that water can overflow from a high area to a low area, the energy consumption of conveying of a traditional pump is reduced, and the outermost layer of the concentric circular partition plate is provided with a heat insulation layer.

The utility model has the advantages that:

(1) The anaerobic biological reaction and the aerobic biological reaction of wastewater treatment are integrated on one reactor, and the design scheme of combining the circular ring lantern ring, the annular partition structure and the plug flow type reactor is adopted, so that the tensile property of steel and the uniform stress distribution property of a circular pool are fully utilized, the structure is compact, the occupied area is small, more importantly, the plug flow type reactor design principle is adopted as the aerobic biological reactor in the first annular functional zone, and wastewater flows along the annular long and narrow corridor under the horizontal plug flow action of an underwater propellerForming a plug-flow hydraulic flow field, the metabolism of microorganisms under aerobic condition is gradually carried out along the length direction of the aerobic tank to achieve the most thorough reaction at the tail end of the aerobic tank, and the effluent COD and NH are compared with a completely mixed reactor under the conditions of the same water conservancy retention time and the same aeration intensity ₃ The content is lower.

(2) Because the design principle of the plug-flow type reactor is adopted in the first annular functional zone, the distribution form of microorganisms is good, the reaction conditions such as aeration quantity and the like can be set according to the reaction degree, the reaction is easier to control effectively, the automatic control is convenient to realize, and the energy consumption is saved.

(3) In the first annular functional zone, the anaerobic tank, the anoxic tank and the aerobic tank are annularly arranged in series, and wastewater can circularly flow in the annular gallery under the underwater propeller without a reflux pump for lifting a circulating system, so that the energy consumption is further saved by the design scheme.

(4) The concentric ring sleeve ring structure layout realizes the design idea of sharing the wall of a plurality of reactors, and the building materials are saved because one wall is reduced; meanwhile, because the inner side and the outer side of the common wall are both acted by the reverse pressure of water, the pressure resistance requirement of the common wall material is reduced by the pressure cancellation, the material thickness can be further reduced, the material is further saved, and the building material can be saved by more than 15%.

(5) The concentric ring sleeve structure only needs the outermost shell to carry out heat preservation and insulation treatment, and reduces the consumption and energy loss of heat preservation and insulation materials.

(6) The layout is flexible, and the design and layout can be carried out according to parameters such as wastewater treatment capacity, hydraulic retention time of each functional area and the like through the height, width and perimeter of each functional area.

(7) The adjusting tank, the anaerobic reactor, the aerobic reactor, the coagulation reactor and the sedimentation tank are integrated together, the main body structure of each functional area is circular, the characteristic that the thin shell structure is uniformly stressed is fully utilized, structural members such as reinforcing tie bars for preventing deformation are not required to be arranged inside a structural space, the method is particularly suitable for assembling and forming enamel assembling plates developed by an applicant in a factory, steel is saved by 30% compared with a square reactor, the field installation period is shortened, the installation efficiency is improved by more than 50%, and the comprehensive economic efficiency is improved by more than 30%.

Drawings

FIG. 1 is a plan view of a preferred embodiment of a modular integrated wastewater treatment reactor according to the present invention;

FIG. 2 is a schematic elevation view of a preferred embodiment of the modular integrated wastewater treatment reactor of the present invention

In the figure, 1, an adjusting tank, 2, an adjusting tank floating decanting weir, 3, a submersible pump, 4, a settling zone, 5, a lifting pipeline, 6, a UASB high-efficiency anaerobic bioreactor, 7, a water distribution pipe, 8, a three-phase separator, 9, a UASB fixed water outlet weir, 10, a UASB water outlet pipeline, 11, an aerobic tank, 12, an aerator, 13, an aerobic tank floating decanting device, 14, a coagulating sedimentation tank, 15, an inclined plate, 16 and a coagulating sedimentation tank fixed water outlet weir, 17, 18 and 19 are all underwater propellers, 20, an anoxic tank, 21, an anaerobic tank, and 22, 23 and 24 are all partition plates.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and a preferred embodiment.

The structure of a module integrated wastewater treatment reactor of the present invention is schematically shown in fig. 1 and 2. The reactor is characterized in that a reactor main body structure is formed by concentric rings formed by splicing three enameled pressed steel plates, a glass fiber reinforced plastic top cover is adopted for sealing the top, and the heights of the three concentric rings are gradually reduced from inside to outside to form a circular integrated tank body. Three spaces A, B and C are formed inside the reactor to form three main functional areas, namely a middle biological reaction functional area A and two annular functional areas B and C surrounding the middle biological reaction functional area A.

The bottom of the middle biological reaction functional area A is provided with a water distribution pipe 7, the upper part is provided with a three-phase separator 8, and the top is provided with a UASB fixed effluent weir 9 for overflowing effluent to form a UASB high-efficiency anaerobic bioreactor 6. The upper part of the UASB high-efficiency anaerobic bioreactor 6 is provided with a gas-solid-liquid three-phase separator 8 (prior art), the sludge bed area at the lower part, waste water is uniformly pumped into the sludge bed area by a water distribution pipe 7 at the bottom of the bioreactor under the pressure of a submersible pump 3, organic matter anaerobe decomposes and generates methane, the generated methane causes internal circulation, when mixed liquid flow formed by liquid, gas and solid rises to the three-phase separator 8, the methane attached to the sludge touches a gas emission plate of the three-phase separator to cause degassing of sludge floc, sludge particles are deposited on the surface of the sludge bed, the gas is collected to the gas collecting body of the three-phase separator and is discharged through an exhaust pipe, the liquid rises through a gap, and overflows through a UASB fixed water outlet weir 9 and is discharged through a UASB water outlet pipeline 10. The UASB high-efficiency anaerobic bioreactor 6 has no mechanical mixing and stirring equipment, and can generate renewable energy biogas in the anaerobic process and treat high-concentration wastewater.

The annular functional area B at the periphery of the middle biological reaction functional area A is used as an adjusting tank 1, a floating decanting weir 2 is arranged in the adjusting tank 1, a submersible pump 3 is arranged in the floating decanting weir 2, and the submersible pump 3 is connected to a water distribution pipe 7 at the bottom of a UASB high-efficiency anaerobic biological reactor 6 through a lifting pipeline 5. The adjusting tank 1 is used for balancing water quality and water quantity and ensuring that the subsequent process runs stably, and the adjusting tank 1 has a sedimentation function, so that a sedimentation area 4 is formed in an area close to the floating decanting weir 2 and far away from a waste water inlet, and a sludge discharge pipe (omitted in the figure) is arranged at the position for discharging sediments. The settling zone 4 is actually a region of the conditioning tank 1, and is generally not separated into physical spaces by a partition.

In the annular functional zone B, a fan-shaped area is separated by a partition plate to form a coagulating sedimentation tank 14, a sedimentation sloping plate 15 is arranged in the middle of the coagulating sedimentation tank 4, phosphorus removal coagulant is added into the area for coagulating sedimentation, the precipitated sludge is discharged from a bottom sludge discharge pipe, and the supernatant on the upper part is discharged as treated standard water or used for other purposes.

The outermost annular functional zone C is divided into three sub-functional zones, namely a large fan-shaped aerobic tank 11, a smaller anaerobic tank 21 and an anoxic tank 20, by three radial partitions 22, 23 and 24, and underwater propellers 17, 18 and 19 are installed in the annular functional zone C so that water is propelled to flow and circulate horizontally along the front annular gallery. As shown in fig. 2, the underwater propellers 17, 18, etc. are installed at a circular through hole corresponding to the lower portion of the partition plate.

A plurality of sets of aerators 12 are provided at the bottom of the aerobic tank 11 to aerate air and decompose organic matters in the wastewater under aerobic conditions using aerobic microorganisms, and an aerator is also provided in the anoxic tank 20 with a lower aeration amount than the aerobic tank 11. A high bottom difference and a liquid level difference are formed between the annular functional area C and the middle biological reaction functional area A, and a water outlet of a UASB (upflow anaerobic sludge blanket) water outlet pipeline 10 of the UASB high-efficiency anaerobic bioreactor 6 is positioned in an anaerobic tank 21 of the annular functional area C, so that sewage (containing anaerobic microorganisms) treated by anaerobic biological reaction flows into the outer annular anaerobic tank 21 in a gravity flow mode. The bottom or middle of the anaerobic tank clapboard 23 is provided with a through hole, and the underwater propeller 18 is arranged at the through hole, so that the water flow containing aerobic microorganisms in the aerobic tank 11 circulates into the anaerobic tank 21 to be mixed with the wastewater discharged by the UASB water outlet pipeline 10.

The underwater propulsion 19 is used to propel the mixed liquor to the anoxic tank 20, and the anaerobic tank 21 is serially linked to the anoxic tank 20. The micro-porous aerator 12 is arranged in the anoxic tank 20, a small amount of aeration ensures that the dissolved oxygen concentration of the mixed liquid achieves the denitrification effect, and the facultative reaction is carried out in the anoxic tank 20 for denitrification. The mixed liquor in the anoxic tank 20 flows to the sub-module of the aerobic tank 11 through the underwater propeller 17. The sub-module of the aerobic tank 11 is internally provided with a microporous aerator 12, and the dissolved oxygen concentration of the mixed liquid in the aerobic tank 11 meets the requirement of aerobic reaction. The tail end of the aerobic tank 11 is also provided with a settling zone, the bottom of the aerobic tank is provided with a sludge discharge pipe for discharging settled sludge, the settling zone is provided with a floating decanter weir 13, and a built-in lifting device, namely a submersible pump (in figure 2, the UASB water outlet pipeline 10 is not connected to the submersible pump in the floating decanter weir 13 of the aerobic tank) is used for lifting the wastewater subjected to the aerobic reaction treatment in the aerobic zone to a coagulating sedimentation tank 14 in the annular functional zone C for coagulating sedimentation treatment. The mixed liquid containing aerobic microorganisms at the tail end of the aerobic tank 11 is pushed to flow to the anaerobic tank 21 by the underwater propeller 18 and is mixed with the wastewater discharged by the UASB water outlet pipeline 10.

In the annular functional area C, the water flow channel is an annular long and narrow gallery, and water is pushed by the underwater propellers 17, 18 and 19 to flow and circulate circularly, and the flow mode can achieve the effect of approximate plug flow. Therefore, after the middle biological reaction functional zone A is treated by anaerobic organisms, the decarbonized wastewater is mixed with water containing aerobic microorganisms from the aerobic tank 11 to form mixed liquid flow when passing through the anaerobic tank 21, after the decarbonized wastewater is primarily aerated by the anoxic tank, the mixed liquid flow flows through the whole aerobic tank 11 in a hydraulic flow state similar to plug flow, the aerobic reaction is gradually deepened by controlling the aeration amount, organic small molecular substances are further decomposed, and the organic substances contained in the water along the whole flow field are sequentially reduced.

In this embodiment, the aerobic reaction zone is arranged in the outermost annular functional zone C rather than the middle annular functional zone B, and the following advantages are provided: the perimeter of the annular functional zone C is longer than that of the annular functional zone B, the annular functional zone C is used as a flow field of the plug flow reactor, namely a reaction field, the longer distribution of the reaction field is more convenient for forming a good aeration plug flow state by flexibly setting the distribution of the aerators, meanwhile, microorganisms can form a certain rule according to a plug flow gallery streamline, the biological phase presents a more and more advanced state, the conditions required by the reaction can be sectionally controlled according to the aerobic reaction habits of the microorganisms, and the reaction controllability is stronger. And the UASB high-efficiency anaerobic bioreactor 6 is arranged in the middle biological reaction functional zone A, so that a three-phase separator 8 can be fully installed by utilizing the height of the UASB high-efficiency anaerobic bioreactor to form bottom anaerobic reaction, the upper three-phase is separated, and the high bottom of a reaction bed layer and the space height required by three-phase separation are ensured.

The following details are given for wastewater treatment in a certain pig farm:

1. waste water conditions

The design flow is 1000 tons/day, and the average flow is 42 tons/hour.

Water quality: livestock and poultry pig farm wastewater.

COD =6000 mg/l BOD =3000 mg/l SS =2000 mg/l NH3=800 mg/l

2. The design conditions of the module integrated wastewater treatment reactor are as follows:

(1) Middle biological reaction functional zone A

HRT =30 hr V =1260 cubic meters for UASB reactor

Diameter =9.93 meters and height =18 meters

Influent COD =6000 mg/l effluent COD =1200 mg/l

(2) Annular functional region B

2.6 meters wide, 7.5 meters deep, 39.5 meters of the perimeter length of the annular center,

adjusting tank (including primary sedimentation tank): HRT =12 hours V =504 cubic meters

A coagulating sedimentation tank: HRT =5.5 hr V =231 cubic meters

N =7.5kw floating decanter

(3) Annular biological reaction functional zone C

2.6 meters wide, 6.0 meters deep, 56.37 meters of annular center perimeter length,

wherein the anaerobic tank 21: HRT =1.5 hr V =77 cubic meters, influent COD =1200 mg/l mixed liquor concentration (MLSS) =3500 mg/l

An anoxic tank 20: HRT =2.0 hours V =84 cubic meters, and a small amount of aeration ensures that the dissolved oxygen concentration of the mixed solution reaches 0.2-0.5 mg/L.

One set of single set of underwater propeller N =4kw

An aerobic aeration zone: HRT =22 h V =924 cubic meter, the dissolved oxygen concentration of the mixed liquor is controlled between 2-5 mg/L

The aerobic aeration zone comprises the following main devices:

three single sets of blowers N =7.5kw

Single floating decanter N =7.5kw

Six sets of aerators

Underwater propeller two single set N =4kw

A precipitation zone: HRT =3 hours V =126 cubic meters

The wastewater treatment process comprises the following steps: after large-particle impurities are separated from wastewater through a grating, the wastewater is lifted to an adjusting tank 1, after water quality and water quantity are balanced in the adjusting tank 1, the wastewater is decanted through an adjusting tank floating decanting weir 2 and then lifted to a water distribution pipe 7 of a UASB high-efficiency anaerobic bioreactor 6 through a submersible pump 3 and a lifting pipeline 5, the uniformly distributed wastewater passes through a sludge bed area, 80% of carbon source organic matters are degraded under the decomposition action of granular anaerobic microorganisms, usable methane is produced, separation of sludge particles, methane and water is realized through a three-phase separator 8, a methane collecting gas pipe is used for discharging, dirt mixed particles are settled back to the sludge bed area, the effluent of the UASB high-efficiency anaerobic bioreactor overflows through a UASB fixed effluent weir 9 and flows into an outer annular anaerobic tank 21 in a gravity flow mode, and meanwhile, a mixed liquid in an aerobic tank 11 is pushed into the anaerobic tank 21 by an underwater propeller 18 to be mixed with each other. The mixed liquid in the anaerobic tank 21 enters an anoxic tank 20, a small amount of aeration is carried out in the anoxic tank 20 to ensure that the dissolved oxygen concentration of the mixed liquid reaches 0.2-0.5 mg/L, facultative reaction denitrification is carried out, the mixed liquid in the anoxic tank 20 flows to an aerobic tank 11 through an underwater propeller 17, the dissolved oxygen concentration of the mixed liquid in the aerobic tank 11 is controlled at 2-5 mg/L, aerobic reaction is carried out to further decompose organic matters, a settling zone is arranged at the tail end of the aerobic tank 11, a floating decanter weir 13 is adopted, and a built-in lifting device and a submersible lifting pump 3 are lifted to a coagulation settling tank 14. And adding a phosphorus removal coagulant into the effluent of the aerobic tank 11, precipitating for 2 hours in a coagulating sedimentation tank 14, then precipitating by an inclined plate 15, discharging the supernatant from a coagulating sedimentation fixed effluent weir 16 until the effluent meets the standard, wherein the effluent COD (chemical oxygen demand) is less than or equal to 80 mg/L, the effluent Total Nitrogen (TN) is less than or equal to 20 mg/L, and the effluent Total Phosphorus (TP) is less than or equal to 1.5 mg/L. And if the aerobic reaction adopts a full mixed flow reactor with the same volume and hydraulic retention time, the COD, total nitrogen and total phosphorus of the effluent are about 20 percent higher than those of the embodiment under the same water inlet condition.

What has been described above is only a preferred embodiment of the present invention, and is not limited to the present invention. It should be noted that other modifications and equivalents may be made by those skilled in the art in light of the teachings of the present disclosure to achieve the same purpose, and should be construed as within the scope of the present disclosure.

Claims (11)

1. A module integrated wastewater treatment reactor, the inner space of the reactor is divided by a plurality of concentric circular clapboards to form a middle biological reaction functional area and at least one annular functional area surrounding the middle biological reaction functional area; the method is characterized in that: the middle biological reaction functional zone forms an anaerobic bioreactor; in the first annular functional area, a sub-functional area comprising a fan-shaped aerobic tank and a fan-shaped anaerobic tank is divided by a radial partition plate, a through hole is formed in the partition plate so that water can pass through, an underwater propeller is arranged in the first annular functional area so that the water flows and circulates along an annular gallery, an aerator is arranged in the aerobic tank, and a settling area formed at the tail end of the aerobic tank is provided with a sludge discharge pipe and a water outlet pipe; the anaerobic bioreactor is provided with an overflow pipeline communicated to the anaerobic tank of the first annular functional area.

2. The modular integrated wastewater treatment reactor of claim 1, wherein: an anoxic tank is arranged between the anaerobic tank and the aerobic tank in the first annular functional zone, and an aerator with aeration quantity less than that of the aerobic tank is arranged in the anoxic tank to form a denitrification zone for water to flow from the anaerobic tank to the aerobic tank.

3. The modular integrated wastewater treatment reactor of claim 2, wherein: and partition plates are arranged between the anoxic tank and the aerobic tank and between the anoxic tank and the anaerobic tank, and are provided with through holes.

4. The module-integrated wastewater treatment reactor according to one of claims 1 to 3, wherein: the hydraulic flow state of the aerobic pool is annular plug flow, and the length-width ratio is more than 10:1.

5. the modular integrated wastewater treatment reactor according to one of claims 1 to 3, wherein: the underwater propeller is arranged at the through hole of the partition board.

6. The module-integrated wastewater treatment reactor according to one of claims 1 to 3, wherein: the bottom of the middle biological reaction functional area is provided with a water distributor, and the upper part is provided with a three-phase separator to form a UASB anaerobic bioreactor.

7. The modular integrated wastewater treatment reactor according to one of claims 1 to 3, wherein: the anaerobic bioreactor also comprises a second annular functional area, wherein the second annular functional area comprises an adjusting tank, and a settling area of the adjusting tank is connected with the water distributor at the bottom of the anaerobic bioreactor through a pump and a lifting pipeline.

8. The modular integrated wastewater treatment reactor of claim 7, wherein: a floating water decanting weir is arranged in the settling area of the regulating tank, and the pump is arranged in the floating water decanting weir.

9. The modular integrated wastewater treatment reactor of claim 7, wherein: and a coagulation sedimentation tank is isolated from the second annular functional zone through a partition plate, a sedimentation inclined plate is arranged in the middle of the coagulation sedimentation tank in the height direction, and a water outlet pipe of the aerobic tank of the first annular functional zone is a submersible pump connected into the floating decanting weir so as to convey clear water of the aerobic tank to the coagulation sedimentation tank for coagulation sedimentation.

10. The modular integrated wastewater treatment reactor according to one of claims 1 to 3, wherein: and a third annular functional area is arranged to form a coagulating sedimentation tank.

11. The module-integrated wastewater treatment reactor according to one of claims 1 to 3, wherein: the heights of the concentric circular partition plates are arranged from inside to outside from top to bottom, and the outermost layer of the concentric circular partition plates is provided with a heat insulation layer.

Images