CN215855340U - Anaerobic reactor - Google Patents

Abstract

The utility model discloses an anaerobic reactor, which comprises a reactor body, a water inlet system and a three-phase separation system, wherein the three-phase separation system is arranged in the reactor body, the water inlet system comprises a water inlet pipe, an annular water distribution pipe, a plurality of water distribution branch pipes and a plurality of control parts, the water distribution branch pipes are communicated with the annular water distribution pipe, the water distribution branch pipes are arranged at intervals along the circumferential direction of the annular water distribution pipe, the water distribution branch pipes extend along the height direction of the reactor body, the control parts are arranged on the water distribution branch pipes and comprise electromagnetic valves and pressure gauges, the pressure gauges are used for acquiring pressure values in the water distribution branch pipes, the electromagnetic valves are used for opening and closing the water distribution branch pipes according to the pressure values in the water distribution branch pipes detected by the pressure gauges, and the control parts and the water distribution branch pipes are in one-to-one correspondence. The anaerobic reactor can avoid the problem that continuous production is influenced by pipeline blockage caused by sludge calcification, ensure the stability and the balance of water distribution and improve the production efficiency.

Description

Anaerobic reactor

Technical Field

The utility model relates to the technical field of wastewater treatment, in particular to an anaerobic reactor.

Background

In the field of wastewater treatment, the upflow anaerobic sludge blanket reactor is widely applied by the remarkable advantages of low energy consumption, high volume load rate, more biomass in the sludge blanket, less residual sludge, capability of recycling methane, simple and convenient operation, low investment and operating cost and the like.

The quality of the water distribution system directly influences the wastewater treatment effect. The high-quality water distribution system can achieve the mixing effect of a common water distributor at a lower reflux amount, reduce the reflux flow, save energy and reduce the operation cost.

At present, most of water distribution systems in the related technology adopt a bottom water distribution mode and use an external plug-in cyclone water distributor, although the uniformity of water distribution is increased to a certain extent, the problems of partial calcification and deactivation of sludge in the operation process of a reactor are solved.

The anaerobic reactor comprises an annular water distribution pipe and a plurality of water distribution branch pipes obliquely arranged on the annular water distribution pipe, and the annular water distribution pipe sprays to the periphery through the water distribution branch pipes to form a rotational flow and increase hydraulic stirring, so that the stability and the balance in the water distribution process are ensured, and the problems of sludge sedimentation and the like in the reactor caused by unbalanced water distribution are solved. However, in the anaerobic reactor in this mode, along with the extension of the operation time, sludge still can be accumulated and will block the water inlet, which affects uniform water distribution, at this time, if the sludge accumulation is to be cleared, water inlet needs to be stopped, the blocked water inlet pipe is removed and replaced, this operation greatly affects the operation of the whole leachate treatment system, even because of the long-time calcification accumulation bonding effect, the water inlet pipe of the plug-in cyclone water distributor is difficult to realize the rapid separation from the anaerobic reactor, the wastewater in the evacuated anaerobic reactor needs to be overhauled, which will provide great challenge for the whole leachate treatment system.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.

Therefore, the embodiment of the utility model provides the anaerobic reactor, which can avoid the problem that continuous production is influenced by pipeline blockage caused by sludge calcification, ensure the stability and the balance of long-time water distribution and improve the production efficiency.

The anaerobic reactor comprises a reactor body, a water inlet system and a three-phase separation system, wherein the three-phase separation system is arranged in the reactor body, the water inlet system comprises a water inlet pipe, an annular water distribution pipe, a plurality of water distribution branch pipes and a plurality of control parts, the water distribution branch pipes are communicated with the annular water distribution pipe, the water distribution branch pipes are arranged at intervals along the circumferential direction of the annular water distribution pipe, the water distribution branch pipes extend along the height direction of the reactor body, the water distribution branch pipes can supply water into the reactor body, the control parts are arranged on the water distribution branch pipes and comprise electromagnetic valves and pressure gauges, the pressure gauges are used for acquiring pressure values in the water distribution branch pipes, the electromagnetic valves are used for opening and closing the water distribution branch pipes according to the pressure values detected by the pressure gauges in the water distribution branch pipes, the control parts correspond to the water distribution branch pipes one by one.

According to the anaerobic reactor provided by the embodiment of the utility model, the pressure change in the water distribution branch pipe can be observed through the pressure gauge, the sludge calcification and pipeline blockage conditions can be judged, the flushing impact force on a blocked pipeline is increased by closing the water distribution branch pipe through the electromagnetic valve, and the blocked water distribution branch pipe is dredged through the hydraulic action, so that the problem that continuous production is influenced due to pipeline blockage caused by sludge calcification is solved, the production efficiency is improved, the water distributor does not need to be replaced, and the equipment cost and the labor intensity are reduced.

In some embodiments, the water distribution branch pipe is provided with a plurality of water spraying ports, at least some of the water spraying ports are arranged at intervals along the extending direction of the water distribution branch pipe, and the water distribution branch pipe supplies water into the reactor body through the plurality of water spraying ports.

In some embodiments, the anaerobic reactor further comprises a gas-liquid separation system disposed at the top of the reactor body, the gas-liquid separation system comprising: the liquid storage tank is positioned above the reactor body, a water outlet and a water drain pipe are arranged on the liquid storage tank, one end of the water drain pipe is connected with the water outlet, and the other end of the water drain pipe extends into the reactor body; the water distribution container is arranged in the reactor body and is communicated with the other end of the drain pipe; the water distribution branch pipes are communicated with the water distribution container and are arranged at intervals along the circumferential direction of the water distribution container, each water distribution branch pipe is provided with an outlet, and the water distribution branch pipes are communicated with the inside of the reactor body through the outlets; and the drainage valve is arranged on the drainage pipe and used for opening and closing the drainage pipe.

In some embodiments, a distance between the bottom of the water diversion container and the bottom of the reactor body in a height direction of the reactor body is 1m to 2 m.

In some embodiments, the included angle between the axial direction of the branch water diversion pipe and the axial direction of the water diversion container is 30-60 degrees.

In some embodiments, the distance between the outlet of the water diversion branch pipe and the bottom of the reactor body in the height direction of the reactor body is 0.5 m-1 m.

In some embodiments, the liquid storage tank is further provided with an air inlet and an air outlet, and the anaerobic reactor further comprises a gas collecting pipe, one end of the gas collecting pipe is connected with the air inlet, and the other end of the gas collecting pipe extends into the reactor body and is communicated with the three-phase separation system.

In some embodiments, the anaerobic reactor further comprises an external circulation system disposed between the three-phase separation system and the gas-liquid separation system, the external circulation system comprising: the guide cylinder is positioned inside the reactor body and sleeved on the drain pipe; the water suction pipe is positioned inside the reactor body and is communicated with the guide cylinder, and the water suction pipe is provided with a water suction port communicated with the inside of the reactor body; one end of the drainage branch pipe is communicated with the guide shell; the power pump is arranged outside the reactor body, and the other end of the drainage branch pipe is connected with the power pump; and one end of the return pipe is connected with the power pump, and the other end of the return pipe is connected with the water inlet pipe.

In some embodiments, the suction pipe is a plurality of suction pipes, and the plurality of suction pipes are arranged at intervals along the circumferential direction of the guide shell.

In some embodiments, the suction openings of the plurality of suction tubes are located on the same plane.

In some embodiments, the cross-section of the outer circumference of the annular water distributor and the inner circumference of the annular water distributor is a regular polygon.

Drawings

Fig. 1 is a schematic structural view of an anaerobic reactor according to an embodiment of the present invention.

Reference numerals:

the reactor body (1) is provided with a plurality of reaction chambers,

a water inlet system 2, a water inlet pipe 21, an annular water distribution pipe 22, a water distribution branch pipe 23, a control part 24,

a gas-liquid separation system 3, a liquid storage tank 31, an air inlet 311, a water outlet 312, an air outlet 313, a water discharge pipe 32, a water diversion container 33, a water diversion branch pipe 34, a gas collecting pipe 35, a water discharge valve 36,

the external circulation system 4, the guide shell 41, the suction pipe 42, the branch drainage pipe 43, the power pump 44 and the return pipe 45.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

An anaerobic reactor according to an embodiment of the present invention includes a reactor body 1, a water inlet system 2, and a three-phase separation system (not shown).

The three-phase separation system is provided in the reactor body 1. The three-phase separation system in the present application may be a three-phase reaction separator commonly used in an upflow anaerobic sludge blanket reactor (UASB) in biological wastewater treatment, or any other means in the art that can achieve the above-mentioned functions, and it is to be understood that the type of the three-phase separation system in the present application is not particularly limited.

The water inlet system 2 includes a water inlet pipe 21, an annular water distribution pipe 22, a plurality of water distribution branch pipes 23, and a plurality of control parts 24.

The water distribution branch pipes 23 are communicated with the annular water distribution pipe 22, the plurality of water distribution branch pipes 23 are arranged at intervals along the circumferential direction of the annular water distribution pipe 22, the plurality of water distribution branch pipes 23 extend along the height direction (the up-down direction shown in fig. 1) of the reactor body 1, and the water distribution branch pipes 23 can supply water into the reactor body 1.

As shown in fig. 1, the annular water distribution pipe 22 is arranged at the top of the reactor body 1, the left side of the annular water distribution pipe 22 is communicated with the water inlet pipe 21 arranged outside the reactor body 1, the upper ends of the water distribution branch pipes 23 are connected with the annular water distribution pipe 22, the upper ends of the water distribution branch pipes 23 are communicated with the annular water distribution pipe 22, the plurality of water distribution branch pipes 23 are arranged at intervals along the circumferential direction of the annular water distribution pipe 22, and the plurality of water distribution branch pipes 23 extend vertically along the up-down direction, specifically, the number of the water distribution branch pipes 23 is 8-24, the larger the number of the water distribution branch pipes 23 is, the water inlet flow and the pulse degree can be increased, thereby improving the treatment effect,

the control parts 24 are arranged on the water distribution branch pipes 23 and comprise electromagnetic valves and pressure gauges, the pressure gauges are used for acquiring pressure values in the water distribution branch pipes 23, the electromagnetic valves are used for opening and closing the water distribution branch pipes 23 according to the pressure values in the water distribution branch pipes 23 detected by the pressure gauges, and the control parts 24 correspond to the water distribution branch pipes 23 one to one.

As shown in fig. 1, the annular water distribution pipes 22, the water inlet pipes 21, the annular water distribution pipes 22, the water distribution branch pipes 23, the upper ends of the water distribution branch pipes 23 are provided with a control component 24, the control component 24 comprises a solenoid valve and a pressure gauge, the pressure gauge is used for acquiring pressure values in the water distribution branch pipes 23, and the solenoid valve is used for opening and closing the water distribution branch pipes 2 according to the pressure values in the water distribution branch pipes 23 detected by the pressure gauge.

According to the anaerobic reactor provided by the embodiment of the utility model, the pressure change in the water distribution branch pipe can be observed through the pressure gauge, the sludge calcification and pipeline blockage conditions can be judged, the flushing impact force on the blocked pipeline is increased by closing the water distribution branch pipe through the electromagnetic valve, and the blocked water distribution branch pipe is dredged through the hydraulic action, so that the problem that continuous production is influenced due to pipeline blockage caused by sludge calcification is solved, the production efficiency is improved, the water distributor does not need to be replaced, and the equipment cost and the labor intensity are reduced.

In some embodiments, the water distribution branch pipe 23 is provided with a plurality of water spraying ports, at least some of the plurality of water spraying ports are arranged at intervals along the extending direction (the up-down direction shown in fig. 1) of the water distribution branch pipe 23, and the water distribution branch pipe 23 supplies water into the reactor body 1 through the plurality of water spraying ports.

As shown in fig. 1, a plurality of water spraying ports are arranged on the water distribution branch pipe 23 at intervals along the vertical direction, the water distribution branch pipe 23 supplies water into the reactor body 1 through the water spraying ports, the water spraying ports supply water at different height positions in the reactor body 1, the uniformity and balance of water distribution are improved, and the inflow water entering the reactor body 1 is fully mixed with anaerobic microorganisms (sludge strains) in the reactor, so that the space dead angle possibly existing at the bottom of the reactor body 1 is reduced, and the treatment efficiency of the anaerobic reactor is improved.

In some embodiments, the anaerobic reactor further comprises a gas-liquid separation system 3, the gas-liquid separation system 3 is disposed at the top of the reactor body 1, and the gas-liquid separation system 3 comprises a liquid storage tank 31, a water discharge pipe 32, a water diversion container 33, a plurality of water diversion branch pipes 34 and a water discharge valve 36.

The liquid storage tank 31 is located above the reactor body 1, a water outlet 312 is arranged on the liquid storage tank 31, one end of the water discharge pipe 32 is connected with the water outlet 312, and the other end of the water discharge pipe 32 extends into the reactor body 1. As shown in FIG. 1, the drain port 312 is provided at the lower end of the reservoir 31, the upper end of the drain pipe 32 communicates with the reservoir 31 through the drain port 312, the lower end of the drain pipe 32 extends into the interior of the reactor body 1, and the drain pipe 32 extends vertically in the up-down direction.

The water diversion container 33 is provided in the reactor body 1, and the water diversion container 33 communicates with the other end of the water discharge pipe 32. As shown in fig. 1, the upper end of the water separation container 33 communicates with the lower end of the water discharge pipe 32.

The branched water diversion pipes 34 communicate with the branched water diversion container 33, and a plurality of branched water diversion pipes 34 are arranged at intervals in the circumferential direction of the branched water diversion container 33. The knock-out leg 34 has an outlet through which the knock-out leg 34 communicates with the interior of the reactor body 1.

A drain valve 36 is provided on the drain pipe 32 to open and close the drain pipe 32. As shown in fig. 1, a drain valve 36 is provided outside the reactor body 1. When the stored liquid in the liquid storage tank 31 reaches a specified amount, the stored liquid flows out from the water diversion branch pipe 34 through the water drainage pipe 32 and the water diversion container 33 by opening the water drainage valve 36, so that the stored liquid is sprayed to the periphery through the water diversion branch pipe 34 to form a rotational flow, and the hydraulic stirring effect is further enhanced.

In some embodiments, the distance between the bottom of the water diversion container 33 and the bottom of the reactor body 1 in the height direction of the reactor body 1 is 1m to 2 m. The distance between the bottom of the water separation vessel 33 and the bottom of the reactor body 1 in the up-down direction is advantageous to increase the effect of the hydraulic stirring.

In some embodiments, the angle between the axial direction of the branch water diversion pipe 34 and the axial direction of the water diversion container 33 is 30-60 °. The axial direction of the water diversion branch pipe 34 and the axial direction of the water diversion container 33 are arranged at a certain included angle, so that the formation of rotational flow is facilitated, and the hydraulic stirring effect is improved. It is understood that the angle between the axial direction of the branch water distribution pipe 34 and the axial direction of the water distribution container 33 in the present application is not limited thereto.

In some embodiments, the outlet of the water knock-out leg 34 is spaced from the bottom of the reactor body 1 by a distance of 0.5m to 1m in the height direction of the reactor body 1. The distance between the outlet of the water branch pipe 34 and the bottom of the reactor body 1 in the up-down direction is advantageous to increase the effect of the hydraulic stirring. It is to be understood that the distance in the up-down direction between the outlet of the branch water knock-out pipe 34 and the bottom of the reactor body 1 in the present application is not limited thereto.

In some embodiments, the reservoir 31 is further provided with an inlet 311 and an outlet 313. The anaerobic reactor further comprises a gas collecting pipe 35, one end of the gas collecting pipe 35 is connected with the gas inlet 311, and the other end of the gas collecting pipe 35 extends into the reactor body 1 and is communicated with the three-phase separation system. As shown in fig. 1, two air inlets 311 are disposed on the outer side surface of the liquid storage tank 31, two gas collecting pipes 35 are provided, the two gas collecting pipes 35 are correspondingly connected with the two air inlets 311, the upper ends of the gas collecting pipes 35 are communicated with the liquid storage tank 31 through the air inlets 311, the lower ends of the gas collecting pipes 35 extend into the reactor body 1, the lower ends of the gas collecting pipes 35 are communicated with the three-phase separation system, and the air outlets 313 are disposed at the top end of the liquid storage tank 31.

In some embodiments, the anaerobic reactor further comprises an external circulation system 4, the external circulation system 4 is disposed between the three-phase separation system and the gas-liquid separation system 3, the external circulation system 4 comprises a guide cylinder 41, a water suction pipe 42, a drainage branch pipe 43, a power pump 44 and a return pipe 45, the guide cylinder 41 is located inside the reactor body 1, and the guide cylinder 41 is sleeved on the drainage pipe 32. As shown in fig. 1, the guide cylinder 41 is located above the three-phase separation system, and the guide cylinder 41 is sleeved on the drain pipe 32.

The water suction pipe 42 is located inside the reactor body 1, and the water suction pipe 42 is communicated with the guide shell 41, and the water suction pipe 42 has a water suction port communicated with the inside of the reactor body 1. As shown in fig. 1, one end of the water suction pipe 42 is communicated with the guide shell 41, and the other end of the water suction pipe 42 has a water suction port communicated with the inside of the reactor body 1.

One end of the drain branch pipe 43 communicates with the guide cylinder 41. As shown in fig. 1, the upper end of the branch drain pipe 43 is communicated with the guide shell 41, a part of the branch drain pipe 43 located inside the reactor body 1 is obliquely arranged inside the reactor body 1 from high right to low left, and a part of the branch drain pipe 43 located outside the reactor body 1 is vertically arranged in the up-down direction.

The power pump 44 is provided outside the reactor body 1, and the other end of the drain branch pipe 43 is connected to the power pump 44. As shown in fig. 1, the inlet end of the power pump 44 is connected to the lower end of the drain leg 43.

One end of the return pipe 45 is connected to the power pump 44, and the other end of the return pipe 45 is connected to the water inlet pipe 21. As shown in FIG. 1, the inlet end of the return tube 45 is connected to the outlet end of the power pump 44, and the outlet end of the return tube 45 is connected to the inlet tube 21.

As shown in fig. 1, the suction pipe 42 of the external circulation system 4 sucks a part of the clear liquid separated by the three-phase separation system into the draft tube 41 by the power of the power pump 44, and then the clear liquid is led out through the drain branch pipe 43 and uniformly flows back to the inlet pipe 21 through the return pipe 45, so that a stable upward flow is formed in an uninterrupted circulation manner, a stable sludge layer, a reaction layer and a clear liquid layer are formed in the reactor body 1, and good hydraulic stirring is provided for the inside of the reactor body 1.

And the waste water stock solution generally has the characteristic of weak acidity (the pH is about 6-7), and calcium and magnesium ions in the waste water stock solution are easy to scale in the environment. The liquid of the external circulation system 4 is alkaline, so that the formation of scale substances of calcium and magnesium ions in the anaerobic reactor body 1 and pipelines can be reduced, and a thick scale layer is difficult to form.

In some embodiments, the suction pipe 42 is plural, and the plurality of suction pipes 42 are arranged at intervals along the circumference of the guide cylinder 41. Specifically, the number of the suction pipes 42 is 2 to 4. It is to be understood that the number of the suction pipes 42 in the present application is not limited thereto.

In some embodiments, the suction openings of the plurality of suction tubes 42 are located on the same plane. As shown in fig. 1, the water inlets of the water suction pipes 42 are all located on the same horizontal plane, when the water inlets are all located on the same horizontal plane, the water suction pipes 42 suck the liquid located at the same height in the reactor body 1, and the ph value of the liquid at the same height is substantially the same, so that the alkaline liquid in the reactor body 1 and the acidic wastewater stock solution in the water inlet pipe 21 are utilized to perform acid-base neutralization, which can reduce the formation of scale formation substances of calcium and magnesium ions in the anaerobic reactor body 1 and the pipeline, and make it difficult to form a thick scale formation layer.

In some embodiments, the cross-section of the outer circumference of the annular water distributor 22 and the inner circumference of the annular water distributor 22 is a regular polygon. Preferably, the cross sections of the outer circumference of the annular water distribution pipes 22 and the inner circumference of the annular water distribution pipes 22 are regular hexagons or regular octagons. Regular multilateral annular pipe compares in circular ring pipe, and its installation convenient operation, it is efficient, also can save the cost that the machine was done the circular arc.

In some embodiments, a plurality of water inlet pipes 21 are connected to the annular water distribution pipe 22, and the plurality of water inlet pipes 21 are symmetrically arranged along the left-right direction. Specifically, the number of the water inlet pipes 21 is two. It is to be understood that the number of inlet pipes 21 in the present application is not limited thereto.

In some embodiments, the circulating upward flow rate of the wastewater is controlled to be 0.5-2 m/h. The larger ascending flow velocity is beneficial to the expansion of the granular sludge bed and the improvement of the mass transfer rate, but the overlarge ascending flow velocity is not beneficial to the sedimentation and the direct current of the sludge, and the interference to the sludge backflow is also larger. As shown in fig. 1, the electromagnetic valve in the water inlet system 2 is controlled to control the water inlet flow and flow rate, and the return water flow can be cooperatively controlled by controlling the opening and closing of the water discharge valve 36 or the power pump 44 during the reaction process, so as to achieve the purpose of real-time flow rate control.

An anaerobic reactor according to some embodiments of the present invention is described below with reference to fig. 1.

The anaerobic reactor according to the embodiment of the utility model comprises a reactor body 1, a water inlet system 2, a three-phase separation system, a gas-liquid separation system 3 and an external circulation system 4.

The three-phase separation system is provided in the reactor body 1.

The water inlet system 2 includes a water inlet pipe 21, an annular water distribution pipe 22, a plurality of water distribution branch pipes 23, and a plurality of control parts 24.

The annular water distribution pipe 22 is arranged at the top of the reactor body 1, the left side of the annular water distribution pipe 22 is communicated with a water inlet pipe 21 arranged outside the reactor body 1, the upper ends of the water distribution branch pipes 23 are connected with the annular water distribution pipe 22, the upper ends of the water distribution branch pipes 23 are communicated with the annular water distribution pipe 22, the water distribution branch pipes 23 are arranged at intervals along the circumferential direction of the annular water distribution pipe 22, the water distribution branch pipes 23 extend vertically along the up-down direction, a control part 24 is arranged at the upper end of each water distribution branch pipe 23 of the water distribution branch pipes 23, the control part 24 comprises an electromagnetic valve and a pressure gauge, the pressure gauge is used for acquiring the pressure value in each water distribution branch pipe 23, and the electromagnetic valve is used for opening and closing the water distribution branch pipes 23 of the control part 24 according to the pressure value in each water distribution branch pipe 23 detected by the pressure gauge.

The water distribution branch pipe 23 is provided with a plurality of water spray ports, at least part of the plurality of water spray ports are arranged at intervals along the vertical direction, and the water distribution branch pipe 23 supplies water into the reactor body 1 through the plurality of water spray ports.

The gas-liquid separation system 3 is arranged at the top of the reactor body 1, and the gas-liquid separation system 3 comprises a liquid storage tank 31, a water discharge pipe 32, a water distribution container 33, a gas collecting pipe 35, a plurality of water distribution branch pipes 34 and a water discharge valve 36.

The liquid storage tank 31 is positioned above the reactor body 1, a water outlet 312 is arranged on the liquid storage tank 31, the water outlet 312 is arranged at the lower end of the liquid storage tank 31, the upper end of the water drain pipe 32 is communicated with the liquid storage tank 31 through the water outlet 312, the lower end of the water drain pipe 32 extends into the reactor body 1, and the water drain pipe 32 vertically extends along the upper and lower direction.

Two air inlets 311 and an air outlet 313 are arranged on the outer side surface of the liquid storage tank 31, two air collecting pipes 35 are provided, the two air collecting pipes 35 are correspondingly connected with the two air inlets 311 respectively, the upper ends of the air collecting pipes 35 are communicated with the liquid storage tank 31 through the air inlets 311, the lower ends of the air collecting pipes 35 extend into the reactor body 1, the lower ends of the air collecting pipes 35 are communicated with the three-phase separation system, and the air outlet 313 is arranged at the top end of the liquid storage tank 31.

The water separation vessel 33 is provided in the reactor body 1, and the upper end of the water separation vessel 33 communicates with the lower end of the water discharge pipe 32.

The branched water distribution pipe 34 is communicated with the branched water container 33, and a plurality of branched water distribution pipes 34 are arranged at intervals along the circumferential direction of the branched water container 33, the branched water distribution pipe 34 having an outlet through which the branched water distribution pipe 34 is communicated with the inside of the reactor body 1.

A drain valve 36 is provided outside the reactor body 1, and the drain valve 36 is used to open and close the drain pipe 32.

The external circulation system 4 is arranged between the three-phase separation system and the gas-liquid separation system 3, the external circulation system 4 comprises a guide shell 41, a water suction pipe 42, a drainage branch pipe 43, a power pump 44 and a return pipe 45,

the guide shell 41 is located inside the reactor body 1 and above the three-phase separation system, and the guide shell 41 is sleeved on the drain pipe 32.

The water suction pipe 42 is positioned inside the reactor body 1, one end of the water suction pipe 42 is communicated with the guide cylinder 41, and the other end of the water suction pipe 42 is provided with a water suction port communicated with the inside of the reactor body 1.

The upper end of the branch drain pipe 43 is communicated with the guide shell 41, a part of the branch drain pipe 43 located inside the reactor body 1 is arranged inside the reactor body 1 in a manner of inclining from high right to low left, and a part of the branch drain pipe 43 located outside the reactor body 1 is vertically arranged in the vertical direction.

The power pump 44 is provided outside the reactor body 1, and the water inlet end of the power pump 44 is connected to the lower end of the water discharge branch pipe 43.

The water inlet end of the return pipe 45 is connected with the water outlet end of the power pump 44, and the water outlet end of the return pipe 45 is communicated with the water inlet pipe 21.

The operation principle of the anaerobic reactor according to the embodiment of the present invention will be described with reference to fig. 1.

When the reactor works, the water inlet pipe 21 is connected with a wastewater stock solution source with certain pressure, the wastewater stock solution finally passes through the annular water distribution pipe 22 and the water distribution branch pipe 23 and sprays the stock solution to the interior of the reactor body 1 through the water spray opening, the wastewater entering the anaerobic reactor body 1 is fully mixed and reacted with sludge bed anaerobic microorganisms in the reactor, the microorganisms decompose organic matters in the wastewater to generate biogas, a mixed solution of gas, water and sludge rises to a three-phase separation system for separation, the separated gas and part of the gas-liquid mixture reach the gas-liquid separation system 3 through the gas collection pipe 35, the gas separated and treated by the gas-liquid separation system 3 is discharged through the upper vent 313, the residual liquid is remained in the liquid storage tank 31, when the stored liquid reaches a specified amount, the stored liquid flows out of the water distribution branch pipe 34 through the water discharge pipe 32 and the water distribution container 33 by opening the water discharge valve 36, and is sprayed to the periphery through the water distribution branch pipe 34, forming rotational flow to further increase hydraulic stirring.

When the reaction is carried out to a certain degree, the power pump 44 provides power to make the water suction pipe 42 of the external circulation system 4 suck a part of clear liquid separated by the three-phase separation system into the guide cylinder 41, then the clear liquid is led out through the drainage branch pipe 43 and uniformly flows back to the water inlet pipe 21 through the return pipe 45, so that the stable ascending flow is formed in an uninterrupted circulation manner, a stable sludge layer, a reaction layer and a clear liquid layer are formed in the reactor body 1, and good hydraulic stirring is provided for the interior of the reactor body 1.

In the working process of the anaerobic reactor, the change of the water inlet pressure of each water distribution branch pipe 23 is observed constantly through a pressure gauge, when the pressure of a certain water distribution branch pipe 23 continuously rises or becomes suddenly large, the condition that the sludge calcification and pipeline blockage occur in the water distribution branch pipe 23 can be judged, the flushing impact force on the blocked water distribution branch pipe 23 is increased by closing the electromagnetic valves on other water distribution branch pipes 23, the water distribution branch pipe 23 with the blockage phenomenon is dredged through the hydraulic action, when the pressure value of the water distribution branch pipe 23 is displayed stably, the electromagnetic valves of all the water distribution branch pipes 23 are opened again simultaneously, and water inlet and balanced water distribution are continuously provided for the anaerobic reactor.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. An anaerobic reactor, comprising: the reactor comprises a reactor body, a water inlet system and a three-phase separation system, wherein the three-phase separation system is arranged in the reactor body,

the water inlet system comprises a water inlet pipe, an annular water distribution pipe, a plurality of water distribution branch pipes and a plurality of control parts, the water distribution branch pipes are communicated with the annular water distribution pipe, the water distribution branch pipes are arranged at intervals along the circumferential direction of the annular water distribution pipe, the water distribution branch pipes extend along the height direction of the reactor body, the water distribution branch pipes can supply water into the reactor body,

the control part is established on the water distribution branch pipe and include solenoid valve and manometer, the manometer is used for acquireing the pressure value in the water distribution branch pipe, the solenoid valve is used for according to the manometer detects pressure value in the water distribution branch pipe is opened and is closed the water distribution branch pipe, and is a plurality of control part and a plurality of water distribution branch pipe one-to-one.

2. The anaerobic reactor according to claim 1, wherein a plurality of water jet ports are arranged on the water distribution branch pipe, at least some of the water jet ports are arranged at intervals along the extending direction of the water distribution branch pipe, and the water distribution branch pipe supplies water into the reactor body through the plurality of water jet ports.

3. An anaerobic reactor according to claim 1, further comprising a gas-liquid separation system provided at the top of the reactor body, the gas-liquid separation system comprising:

a liquid storage tank which is positioned above the reactor body and is provided with a water outlet,

one end of the water drainage pipe is connected with the water drainage port, and the other end of the water drainage pipe extends into the reactor body;

the water distribution container is arranged in the reactor body and is communicated with the other end of the drain pipe;

the water distribution branch pipes are communicated with the water distribution container and are arranged at intervals along the circumferential direction of the water distribution container, each water distribution branch pipe is provided with an outlet, and the water distribution branch pipes are communicated with the inside of the reactor body through the outlets;

and the drainage valve is arranged on the drainage pipe and used for opening and closing the drainage pipe.

4. An anaerobic reactor according to claim 3, characterized in that the distance between the bottom of the water-dividing vessel and the bottom of the reactor body in the height direction of the reactor body is 1 m-2 m.

5. An anaerobic reactor according to claim 3, wherein the included angle between the axial direction of the water diversion branch pipes and the axial direction of the water diversion container is 30 ° to 60 °.

6. An anaerobic reactor according to claim 3, wherein the outlets of the water knock-out legs are at a distance of 0.5 to 1m from the bottom of the reactor body in the height direction of the reactor body.

7. The anaerobic reactor according to claim 3, wherein the liquid storage tank is further provided with an air inlet and an air outlet, the anaerobic reactor further comprises a gas collecting pipe, one end of the gas collecting pipe is connected with the air inlet, and the other end of the gas collecting pipe extends into the reactor body and is communicated with the three-phase separation system.

8. An anaerobic reactor according to claim 3, further comprising an external circulation system provided between the three-phase separation system and the gas-liquid separation system, the external circulation system comprising:

the guide cylinder is positioned inside the reactor body and sleeved on the drain pipe;

the water suction pipe is positioned inside the reactor body and is communicated with the guide cylinder, and the water suction pipe is provided with a water suction port communicated with the inside of the reactor body;

one end of the drainage branch pipe is communicated with the guide shell;

the power pump is arranged outside the reactor body, and the other end of the drainage branch pipe is connected with the power pump;

and one end of the return pipe is connected with the power pump, and the other end of the return pipe is connected with the water inlet pipe.

9. An anaerobic reactor according to claim 8, wherein the plurality of water uptake pipes are arranged at intervals along the circumference of the draft tube.

10. An anaerobic reactor according to claim 9, wherein the water scoops of the plurality of the suction pipes are located on the same plane.

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