CN117417055A - Modular multifunctional integrated anaerobic equipment - Google Patents

Abstract

The invention discloses modularized multifunctional integrated anaerobic equipment, which comprises a plurality of rectangular columnar reaction tanks with identical appearance; the upper surface and the lower surface of all the reaction tanks are square with the same size, and the side surfaces are four identical rectangles; the reaction tanks comprise a hydrolysis module, an anaerobic module, a three-phase separation module, equipment rooms and a biogas treatment grid; every two adjacent baffle plates between the reaction tanks which need to be filled with water are all provided with water through holes. The invention has shorter construction period, lower investment cost and high flexibility; the number combination of different functional modules can be designed according to different water quality and water quantity, so that the treatment function can be realized rapidly; the equipment can be put into use after being debugged in the field, so that the civil engineering time and the cost are reduced; the hydrolysis module, the anaerobic module and the three-phase separation module can realize flexible conversion by changing the number and combining, and adapt to different water qualities; the combination and the quantity of the modules can be replaced without stopping water according to the change of the actual water quality and quantity, thereby realizing the function transformation.

Description

Modular multifunctional integrated anaerobic equipment

Technical field

The invention relates to the technical field of sewage treatment, and in particular to modular multi-functional integrated anaerobic equipment.

Background technique

With the obvious trend of intensification and factoryization of the livestock and poultry breeding industry in recent years, the discharge of breeding wastewater has increased simultaneously, which has a greater impact on the ecological environment.

The harmfulness of livestock and poultry breeding wastewater is reflected in many aspects:

First, aquaculture wastewater, which is highly concentrated organic wastewater, is directly discharged into rivers without treatment, which will lead to eutrophication of water bodies, rapid reproduction of aquatic bacterial colonies, insufficient supply of dissolved oxygen, aquatic animals' death from hypoxia, and imbalance of the ecosystem;

Secondly, aquaculture wastewater will produce dangerous gases such as ammonia, hydrogen sulfide, and methane under anaerobic conditions. After volatilization, it will have a serious impact on the surrounding atmospheric environment;

Third, breeding feed contains a certain amount of additives, such as copper, zinc, iron and arsenic. As wastewater flows into the environment, long-term accumulation will cause irreversible damage to the surrounding soil;

Fourth, livestock and poultry manure carries a large number of pathogenic microorganisms. If not treated in time, it is easy to infect humans and animals and form infectious diseases. .

Anaerobic processes are widely used in the pretreatment of livestock and poultry breeding wastewater due to their low energy consumption and ability to treat highly concentrated organic wastewater.

However, the existing anaerobic treatment methods are mostly customized solutions involving civil construction, equipment installation, electrical instrumentation and process debugging. This kind of solution has long construction period, high investment cost, fixed and inflexible operation, and great limitations.

Therefore, how to solve the problems of long construction period, high investment cost, and fixed and inflexible operation of anaerobic processes, and how to efficiently and economically treat livestock and poultry breeding wastewater has become an urgent technical problem that technicians in the field need to solve.

Contents of the invention

In view of the above-mentioned defects of the existing technology, the present invention provides modular multi-functional integrated anaerobic equipment. The purpose of the invention is to solve the problems of long construction period of anaerobic process, high investment cost, and fixed and inflexible operation, so as to achieve efficient and economical operation. Treatment of livestock and poultry breeding wastewater.

In order to achieve the above object, the present invention discloses a modular multi-functional integrated anaerobic equipment, including a plurality of cuboid columnar reaction tanks with the same appearance;

The upper and lower sides of all reaction tanks are squares of the same size, and the sides are four identical rectangles;

Multiple reaction tanks include hydrolysis modules, anaerobic modules, three-phase separation modules, equipment rooms and biogas treatment cells;

The partition board between every two adjacent reaction pools that need to pass water is provided with water holes.

Preferably, each hydrolysis module includes a plurality of packing ramps, a hydrolysis outlet tank and a water distribution pipe;

Each of the packing inclined plates is arranged at an inclination angle of 60° with the horizontal plane, and is arranged and fixed in the corresponding reaction tank through a square frame and brackets;

The upper part of each square frame and bracket is provided with a derivation bracket, which is fixed to the inner wall of the corresponding reaction tank near the top by the corresponding derivation bracket;

Each of the hydrolysis water tanks is arranged in the corresponding reaction tank, and is connected to the derivation bracket above all the packing inclined plates of the corresponding reaction tank;

Each water distribution pipe is arranged vertically at the center of the corresponding hydrolysis outlet tank, with the top being the water inlet of the corresponding reaction tank, and the lower end directly leading to the bottom of the corresponding reaction tank;

When sewage is pumped into each hydrolysis module, it first enters the reaction area at the bottom of the corresponding reaction tank through the corresponding water distribution pipe;

In the process of the sewage entering the corresponding reaction zone, the sewage is hydraulically stirred by the inlet kinetic energy of the sewage, and mixed and reacted with the sludge in the corresponding reaction tank;

The filling rate of the filling area formed by all the filling ramps of each hydrolysis module is 30% to 40%;

The reacted sewage and sludge mixture flows upward and forms clean water and sludge after enhanced separation through the corresponding filler area;

Wherein, the clean water flows upward into the corresponding hydrolysis outlet tank, and the sludge slides back to the corresponding reaction zone;

The clean water entering each of the hydrolysis water tanks enters the next reaction tank through the corresponding water holes connected by pipes.

More preferably, the sludge concentration of each hydrolysis module reaches 10g/L to 15g/L, and the volume load is between 5kgCOD/m3·d and 15kg COD/m3·d.

Preferably, each of the anaerobic modules includes a mechanical stirring device, a biogas hood and an anaerobic biogas pipe;

Each of the mechanical stirring devices includes a rotary drive device located near the top of the corresponding reaction tank, and an impeller located near the middle and bottom of the reaction tank;

Each impeller is driven to rotate by the corresponding rotation drive device through a drive shaft;

Each biogas hood is arranged below the corresponding rotary drive device and above all the impellers in the corresponding reaction tank;

A mechanical sealing device is provided at the connection position between each driving shaft and the corresponding biogas hood to seal the biogas generated in the reaction tank;

The lower end of each biogas hood goes deep into the middle of the corresponding reaction tank and forms an air seal with the inner wall of the corresponding reaction tank. The position close to the upper end is connected to the corresponding anaerobic biogas pipe, and the corresponding anaerobic biogas pipe is connected. The biogas generated by the reaction in the reaction tank is output through the corresponding anaerobic biogas pipe;

After the sewage enters each of the anaerobic modules, it merges with the return sludge of the anaerobic module. Under the action of the corresponding stirring device, the sewage and the return sludge are fully mixed and fermented.

More preferably, the sludge concentration in each anaerobic module is 15g/L to 30g/L, and the sludge volume load is 7kgCOD/m ³ ·d to 15kg COD/m ³ ·d.

More preferably, the lower end of each anaerobic biogas pipe is connected to the corresponding biogas hood, and the upper end passes through the corresponding reaction tank and is connected to the biogas treatment grid through a flange interface.

Preferably, each of the three-phase separation modules includes an air chamber, a mudguard, a three-phase separation water tank and a three-phase separation biogas pipe;

Each gas chamber is arranged in the middle of the top of the corresponding reaction tank and is connected to the cover plate on the top of the corresponding reaction tank. The top is provided with a method for connecting to the corresponding three-phase separation biogas pipe. Blue connection structure;

A corresponding fender is provided below each air chamber;

Each fender has a tapered structure without a head, the size of the upper end matches the lower part of the corresponding air chamber, and the size of the lower end matches the inner cavity of the corresponding reaction tank;

Each of the three-phase separation water tanks is arranged around the outside of the corresponding air chamber;

One end of each three-phase separation biogas pipe is connected to the corresponding gas chamber through the corresponding flange connection structure, and the other end goes out of the corresponding reaction tank and is connected to the biogas treatment pipe through a flange interface. lattice connection;

After the sewage enters each of the three-phase separation modules, the biogas carried by the sewage mixes with the muddy water at the bottom of the three-phase separation module, and churns, emerging upward and outward from the fender;

Wherein, after the biogas rises to the top through the corresponding mud baffle, it is separated into the corresponding gas chamber, and then enters the biogas treatment grid through the corresponding three-phase separation biogas pipe;

Under the action of gravity, the muddy water after separation of biogas descends along the outer wall of the mudguard to complete the muddy water separation, and the sludge settles and slides to the bottom of the corresponding three-phase separation module;

The clear liquid enters the subsequent sewage treatment system through the corresponding three-phase separation tank.

More preferably, a mud discharge pipe is provided at the bottom of each three-phase separation module;

Each sludge discharge pipe is connected to a sludge pump installed in the equipment room;

The sludge pump sucks out the sludge in the corresponding three-phase separation module through each sludge discharge pipe, and then transports it to the hydrolysis module, the anaerobic module that lacks sludge, or to the Both the hydrolysis module and the anaerobic module are discharged with sufficient sludge.

More preferably, the sedimentation surface load of each three-phase separation module is between 0.5m ³ /m ² .d and 1m ³ /m ² .d.

Preferably, the biogas treatment compartment includes a water sealing compartment and multiple purification compartments;

The water sealing grid is filled with water, and is provided with a water sealing grid air inlet pipe and a water sealing grid air outlet pipe;

The water sealing grid air inlet pipe and the water sealing grid air outlet pipe are both arranged vertically, and are fixed with the corresponding cover plate of the reaction tank. The upper ends are equipped with flange connection structures, and the upper ends are located at the corresponding places. Above the cover of the reaction tank;

The lower ends of the water seal grid air inlet pipes extend into the corresponding water bodies;

The lower ends of the air outlet pipes of the water seal grid are located above the water surface of the corresponding water body;

Each of the purification compartments is provided with purification packing, and each is provided with a purification compartment air inlet pipe and a purification compartment air outlet pipe;

The air inlet pipe of each purification compartment and the corresponding air outlet pipe of the purification compartment are arranged vertically, and are fixed with the cover plate of the corresponding reaction tank. The upper ends are equipped with flange connection structures, and the upper ends are located at the corresponding Above the cover of the reaction tank;

The lower end of the air inlet pipe of each purification compartment extends into the corresponding purification filler;

The lower end of the air outlet pipe of each purification compartment is located above the corresponding purification filler;

Each of the anaerobic biogas pipes and each of the three-phase separated biogas pipes are connected to the water sealing grid, and the biogas is passed into the water sealing grid through the water sealing grid. The stabilized biogas is The air outlet pipe of the water-sealed grid leads to multiple purification grids in sequence;

The air inlet pipe of each purification grid passes biogas under the corresponding purification filler for dry desulfurization, and the purified gas is discharged from the corresponding purification grid outlet pipe for subsequent processing.

Beneficial effects of the present invention:

The invention has a shorter construction period, lower investment cost and high flexibility; the number and combination of different functional modules can be designed according to different water quality and quantity to quickly realize the processing function; the equipment can be put into use after being debugged on site, reducing civil construction time and costs ; The hydrolysis module, anaerobic module and three-phase separation module can be flexibly converted by changing the quantity and combination to adapt to different water qualities; even after debugging and operation, the module combination and quantity can be replaced without interruption according to changes in actual water quality and quantity. , thereby achieving functional transformation.

The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, features and effects of the present invention.

Description of the drawings

Figure 1 shows a schematic plan view of an embodiment of the present invention.

Figure 2 shows a schematic structural diagram of the cross-section along AA in Figure 1 of the present invention.

Figure 3 shows a schematic structural diagram of the cross-section along BB in Figure 1 of the present invention.

Figure 4 shows a schematic longitudinal cross-sectional structural diagram of the hydrolysis module in one embodiment of the present invention.

Figure 5 shows a schematic plan view of the hydrolysis module in one embodiment of the present invention.

Figure 6 shows a schematic longitudinal cross-sectional structural diagram of an anaerobic module in an embodiment of the present invention.

Figure 7 shows a schematic plan view of an anaerobic module in an embodiment of the present invention.

Figure 8 shows a schematic longitudinal cross-sectional structural diagram of a three-phase separation module in an embodiment of the present invention.

Figure 9 shows a schematic plan view of a three-phase separation module in an embodiment of the present invention.

Figure 10 shows a schematic structural diagram of a longitudinal section of a biogas treatment grid in an embodiment of the present invention.

Figure 11 shows a schematic plan view of a biogas treatment grid in one embodiment of the present invention.

Figure 12 shows a flow chart of the operation process of an embodiment of the present invention.

Detailed ways

Example

As shown in Figures 1 to 3, the modular multi-functional integrated anaerobic equipment includes multiple reaction tanks with the same rectangular columnar shape;

All reaction tanks have a square shape of the same size above and below, and four identical rectangles on the sides;

Multiple reaction tanks include hydrolysis module 1, anaerobic module 2, three-phase separation module 3, equipment room 6 and biogas treatment grid;

The partition board 7 between every two adjacent reaction tanks that need to pass water is provided with water holes 8 .

In practical applications, the present invention usually includes 2 groups of hydrolysis modules 1, 13 groups of anaerobic modules 2, 1 group of three-phase separation modules, an equipment room 6 and 1 group of biogas treatment cells. There is a partition between the reaction pools. The plate 7 and the partition plate 7 are connected through water holes 8.

As shown in Figures 4 and 5, in some embodiments, each hydrolysis module 1 includes multiple packing ramps 101, a hydrolysis water tank 102 and a water distribution pipe 103;

Each packing inclined plate 101 is set at an inclination angle of 60° with the horizontal plane, and is arranged and fixed in the corresponding reaction tank through a square frame and brackets;

The upper part of each square frame and bracket is provided with a derivation bracket, which is fixed to the inner wall of the corresponding reaction tank near the top through the corresponding derivation bracket;

Each hydrolysis water tank 102 is arranged in the corresponding reaction tank, and is connected to the derivation bracket above all the packing ramps 101 of the corresponding reaction tank;

Each water distribution pipe 103 is arranged vertically at the center of the corresponding hydrolysis outlet tank 102, with the top being the water inlet of the corresponding reaction tank, and the lower end directly leading to the bottom of the corresponding reaction tank;

When sewage is pumped into each hydrolysis module 1, it first enters the reaction area at the bottom of the corresponding reaction tank through the corresponding water distribution pipe 103;

When the sewage enters the corresponding reaction zone, the sewage is hydraulically stirred by the kinetic energy of the incoming water, and mixed and reacted with the sludge in the corresponding reaction tank;

The filling rate of the filling area formed by all the filling ramps 101 of each hydrolysis module 1 is 30% to 40%;

The reacted sewage and sludge mixture flows upward and forms clean water and sludge after enhanced separation in the corresponding filling area;

Among them, the clean water flows upward into the corresponding hydrolysis outlet tank 102, and the sludge slides back to the corresponding reaction zone;

The clean water entering each hydrolysis water tank 102 enters the next reaction tank through the corresponding water hole 8 connected by a pipe.

In practical applications, when sewage enters each hydrolysis module 1 and passes through the filling process, on the one hand, it can increase the sludge concentration, on the other hand, it can also prevent sludge loss. While degrading part of the COD, it can also increase biodegradability. sex.

In some embodiments, the sludge concentration of each hydrolysis module 1 reaches 10g/L to 15g/L, and the volume load is between 5kg COD/m3·d and 15kg COD/m3·d.

As shown in Figures 6 and 7, in some embodiments, each anaerobic module 2 includes a mechanical stirring device 201, a biogas hood 202 and an anaerobic biogas pipe 203;

Each mechanical stirring device 201 includes a rotary driving device arranged near the top of the corresponding reaction tank, and an impeller arranged near the middle and bottom of the reaction tank;

Each impeller is driven to rotate by a corresponding rotary drive device through a drive shaft;

Each biogas hood 202 is arranged below the corresponding rotation drive device and above all impellers in the corresponding reaction tank;

A mechanical sealing device is provided at the connection position between each driving shaft and the corresponding biogas cover 202 to seal the biogas generated in the reaction tank;

The lower end of each biogas hood 202 goes deep into the middle of the corresponding reaction tank and forms an air seal 9 with the inner wall of the corresponding reaction tank. The position near the upper end is connected to the corresponding anaerobic biogas pipe 203 to react the corresponding reaction tank to produce The biogas is output through the corresponding anaerobic biogas pipe 203;

After the sewage enters each anaerobic module 2, it merges with the return sludge of the anaerobic module 2. Under the action of the corresponding stirring device 201, the sewage and the return sludge are fully mixed and fermented.

In practical applications, sewage removes a large amount of COD in the anaerobic module 2. The biogas generated during the reaction rises and is collected by the biogas hood 202 and the air seal 9, and then enters the biogas treatment grid through the biogas pipe 203.

In some embodiments, the sludge concentration in each anaerobic module 2 is 15g/L to 30g/L, and the sludge volume load is 7kg COD/m ³ ·d to 15kg COD/m ³ ·d.

In some embodiments, the lower end of each anaerobic biogas pipe 203 is connected to the corresponding biogas hood 202, and the upper end passes through the corresponding reaction tank and is connected to the biogas treatment grid through a flange interface.

As shown in Figures 8 and 9, in some embodiments, each three-phase separation module 3 includes an air chamber 301, a mudguard 302, a three-phase separation water tank 303 and a three-phase separation biogas pipe 304;

Each gas chamber 301 is arranged at the middle position on the top of the corresponding reaction tank and is connected to the cover plate on the top of the corresponding reaction tank. The top is provided with a flange connection structure for connecting to the corresponding three-phase separation biogas pipe 304;

A corresponding fender 302 is provided below each air chamber 301;

Each mudguard 302 has a tapered structure without a head, the size of the upper end matches the lower part of the corresponding air chamber 301, and the size of the lower end matches the inner cavity of the corresponding reaction tank;

Each three-phase separation water tank 303 is arranged around the outside of the corresponding air chamber 301;

One end of each three-phase separation biogas pipe 304 is connected to the corresponding gas chamber 301 through the corresponding flange connection structure, and the other end goes out of the corresponding reaction tank and is connected to the biogas treatment grid through the flange interface;

After the sewage enters each three-phase separation module 3, the biogas carried by the sewage mixes with the muddy water at the bottom of the three-phase separation module 3, and churns, emerging upward and outward from the fender 302;

Among them, after the biogas rises to the top through the corresponding fender 302, it is separated into the corresponding gas chamber 301, and then enters the biogas treatment grid through the corresponding three-phase separation biogas pipe 304;

Under the action of gravity, the muddy water after separation of biogas descends along the outer wall of the mudguard 302 to complete the muddy water separation, and the sludge settles and slides to the bottom of the corresponding three-phase separation module 3;

The clear liquid enters the subsequent sewage treatment system through the corresponding three-phase separation tank 303.

In some embodiments, a mud discharge pipe 602 is provided at the bottom of each three-phase separation module 3;

Each row of mud pipes 602 is connected to the sludge pump 601 installed in the equipment room 6;

The sludge pump 601 sucks out the sludge in the corresponding three-phase separation module 3 through each row of mud pipes 602, and then transports it to the hydrolysis module 1 and the anaerobic module 2 that lack sludge, or in the hydrolysis module 1 and the anaerobic module 2. Module 2 is discharged after sufficient sludge is collected.

In practical applications, the equipment room 6 is equipped with a sludge pump 601. The sludge pump 601 absorbs sludge from the three-phase separation module 3 through the sludge pipe 602, and then transports the sludge to the hydrolysis module 1 and the anaerobic module through pipelines. 2. Or discharge when there is too much sludge.

In some embodiments, the sedimentation surface load of each three-phase separation module 3 ranges from 0.5 m ³ /m ² .d to 1 m ³ /m ² .d.

As shown in Figures 10 and 11, in some embodiments, the biogas treatment compartment includes a water sealing compartment 4 and multiple purification compartments 5;

The water sealing grid 4 is filled with water, and is provided with a water sealing grid air inlet pipe 401 and a water sealing grid air outlet pipe 402;

The water sealing grid air inlet pipe 401 and the water sealing grid air outlet pipe 402 are both installed vertically, and are fixed to the cover plate of the corresponding reaction tank. The upper ends are equipped with flange connection structures, and the upper ends are located on the cover plate of the corresponding reaction tank. above;

The lower ends of the water seal grid air inlet pipes 401 extend into the corresponding water body;

The lower ends of the water sealing grid air outlet pipes 402 are located above the water surface of the corresponding water body;

Each purification compartment 5 is provided with purification filler 503, and is provided with a purification compartment air inlet pipe 501 and a purification compartment air outlet pipe 502;

Each purification compartment air inlet pipe 501 and the corresponding purification compartment air outlet pipe 502 are arranged vertically, and are fixed to the cover plate of the corresponding reaction tank. The upper ends are equipped with flange connection structures, and the upper ends are located at the corresponding reaction tank. above the cover;

The lower end of the air inlet pipe 501 of each purification compartment extends into the corresponding purification filler 503;

The lower end of the air outlet pipe 502 of each purification compartment is located above the corresponding purification filler 503;

Each anaerobic biogas pipe 203 and each three-phase separation biogas pipe 304 are connected to the water sealing grid 4, and the biogas is passed into the water sealing grid 4 through the water sealing grid 4. The stabilized biogas exits the water sealing grid 402 through the air outlet pipe 402. Enter multiple purification grids 5 in sequence;

The air inlet pipe 501 of each purification cell passes the biogas under the corresponding purification filler 503 for dry desulfurization, and the purified gas is discharged from the corresponding purification cell outlet pipe 502 for subsequent processing.

As shown in Figure 12, the actual operation process of the present invention is as follows:

1. Sewage is first pumped into the hydrolysis module 1, enters the bottom of the pool through the water distribution pipe 103, is hydraulically stirred, and mixes and reacts with the sludge in the pool. The filling rate of the inclined plate filler 101 in the hydrolysis module 1 is 30-40%. On the one hand, it increases Sludge concentration, on the other hand, can also prevent sludge loss, making the sludge concentration in the module reach 10-15g/L, further allowing its volume load to be adjusted between 5-15kg COD/m ³ ·d, in the degradation part At the same time as COD, the biodegradability is improved. The reacted muddy water flows upward, and after being separated by the inclined plate filler 101, the clean water enters the hydrolysis outlet tank 102, and the sludge slides back to the lower reaction zone; the clean water entering the outlet tank 102 enters the next module through the pipe connection hole 8.

2. After the sewage enters the anaerobic module 2, it merges with the return sludge. Under the action of the stirring device 201, the sewage and activated sludge are fully mixed and fermented. The sludge concentration in the module 2 is 15-30g/L, and the sludge volume load reaches 7-15kg COD/m ³ ·d. A large amount of COD is removed from the sewage at this stage. The effluent enters the next module. The biogas generated during the reaction rises and is collected under the action of the biogas hood 202 and the air seal 9, and then passes through the anaerobic biogas pipe. 203 enters the biogas treatment grid 4/5.

3. After the sewage enters the three-phase separation module 3, the biogas rises to the top and is separated into the air chamber 301. It enters the biogas treatment grid through the three-phase biogas pipe 304. The muddy water after the biogas is separated along the mudguard 302 under the action of gravity. The descent completes the separation of mud and water, and the sludge settles and slides to the bottom, and the clear liquid enters the subsequent sewage treatment system through the three-phase outlet tank 303; there is a mud discharge pipe 602 at the bottom of the reaction tank of the three-phase separation module 2, and under the action of the sludge pump 601 Part of it is discharged as residual sludge, and part of it is returned to the front-end reaction tank to replenish sludge. During the entire sedimentation process, the sedimentation surface load is 0.5-1m ³ /m ² .d. The number of three-phase separation modules can be set according to the surface load, sludge concentration and mud-water separation effect.

4. The biogas collected by the anaerobic module 2 and the three-phase separation module 3 first enters the water sealing grid 4 in the biogas treatment grid, and is passed to the bottom of the grid through the air inlet pipe 401. The water sealing grid is filled with a certain amount of water. After the pressure is stabilized, The biogas is connected to the air inlet pipe 501 of the purification grid 5 through the gas outlet pipe 402 and enters the bottom of the purification grid for dry desulfurization. The purified gas is discharged from the gas outlet pipe 502 into the subsequent biogas treatment device.

The number of each module can be specifically adjusted according to the design requirements such as water quality and quantity. It can also be spanned across multiple integrated devices as needed, and the functions of different water volumes and loads can be assumed as a whole in the form of multiple cluster integrated devices.

The preferred embodiments of the present invention are described in detail above. It should be understood that those skilled in the art can make many modifications and changes based on the concept of the present invention without creative efforts. Therefore, any technical solutions that can be obtained by those skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention and on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims (10)

1. Modular multi-functional integrated anaerobic equipment; it is characterized by including multiple cuboid columnar reaction tanks with the same appearance; The upper and lower sides of all reaction tanks are squares of the same size, and the sides are four identical rectangles; The plurality of reaction tanks include a hydrolysis module (1), anaerobic module (2), a three-phase separation module (3), an equipment room (6) and a biogas treatment grid; The partitions (7) between every two adjacent reaction pools that need to pass water are provided with water holes (8). 2. The modular multifunctional integrated anaerobic equipment according to claim 1, characterized in that each hydrolysis module (1) includes a plurality of filler inclined plates (101), a hydrolysis water tank (102) and a cloth. water pipe(103); Each of the packing inclined plates (101) is arranged at an inclination angle of 60° with the horizontal plane, and is arranged and fixed in the corresponding reaction tank through a square frame and brackets; The upper part of each square frame and bracket is provided with a derivation bracket, which is fixed to the inner wall of the corresponding reaction tank near the top by the corresponding derivation bracket; Each hydrolysis water tank (102) is arranged in the corresponding reaction tank, above all the packing ramps (101) of the corresponding reaction tank, and connected to the derivation bracket; Each water distribution pipe (103) is installed vertically at the center of the corresponding hydrolysis water tank (102). The top is the water inlet of the corresponding reaction tank, and the lower end is directly connected to the bottom of the corresponding reaction tank. ; When sewage is pumped into each hydrolysis module (1), it first enters the reaction zone at the bottom of the corresponding reaction tank through the corresponding water distribution pipe (103); In the process of the sewage entering the corresponding reaction zone, the sewage is hydraulically stirred by the inlet kinetic energy of the sewage, and mixed and reacted with the sludge in the corresponding reaction tank; The filling rate of the filling area formed by all the filling ramps (101) of each hydrolysis module (1) is 30% to 40%; The reacted sewage and sludge mixture flows upward and forms clean water and sludge after enhanced separation through the corresponding filler area; Wherein, the clean water flows upward into the corresponding hydrolysis outlet tank (102), and the sludge slides back to the corresponding reaction zone; The clean water entering each hydrolysis water tank (102) enters the next reaction tank through the corresponding water hole (8) connected by a pipe. 3. The modular multifunctional integrated anaerobic equipment according to claim 2, characterized in that the sludge concentration of each hydrolysis module (1) reaches 10g/L to 15g/L, and the volume load is 5kg. Between COD/m3·d and 15kg COD/m3·d. 4. The modular multifunctional integrated anaerobic equipment according to claim 1, characterized in that each anaerobic module (2) includes a mechanical stirring device (201), a biogas hood (202) and an anaerobic Biogas pipe(203); Each of the mechanical stirring devices (201) includes a rotary driving device arranged near the top of the corresponding reaction tank, and an impeller arranged near the middle and bottom of the reaction tank; Each impeller is driven to rotate by the corresponding rotation drive device through a drive shaft; Each biogas hood (202) is arranged below the corresponding rotary drive device and above all the impellers in the corresponding reaction tank; A mechanical sealing device is provided at the connection position between each driving shaft and the corresponding biogas hood (202) to seal the biogas generated in the reaction tank; The lower end of each biogas hood (202) goes deep into the middle of the corresponding reaction tank and forms an air seal (9) with the inner wall of the corresponding reaction tank. The position close to the upper end is in contact with the corresponding anaerobic tank. The biogas pipe (203) is connected, and the biogas generated by the reaction in the corresponding reaction tank is output through the corresponding anaerobic biogas pipe (203); After the sewage enters each of the anaerobic modules (2), it merges with the return sludge of the anaerobic module (2). Under the action of the corresponding stirring device (201), the sewage and the return sludge are fully mixed and fermented. 5. The modular multifunctional integrated anaerobic equipment according to claim 4, characterized in that the sludge concentration in each anaerobic module (2) is 15g/L to 30g/L, and the sludge volume The load ranges from 7kg COD/m ³ ·d to 15kg COD/m ³ ·d. 6. The modular multifunctional integrated anaerobic equipment according to claim 4, characterized in that the lower end of each anaerobic biogas pipe (203) is connected to the corresponding biogas hood (202), and the upper end Go out of the corresponding reaction tank and connect to the biogas treatment grid through a flange interface. 7. The modular multifunctional integrated anaerobic equipment according to claim 1, characterized in that each of the three-phase separation modules (3) includes an air chamber (301), a mudguard (302), three Phase separation tank (303) and three-phase separation biogas pipe (304); Each gas chamber (301) is arranged in the middle of the top of the corresponding reaction tank and is connected to the cover plate on the top of the corresponding reaction tank. The top is provided with a biogas pipe for separating the corresponding three phases. (304) Connected flange connection structure; A corresponding fender (302) is provided below each air chamber (301); Each of the fenders (302) has a tapered structure with the head removed, the size of the upper end matches the lower part of the corresponding air chamber (301), and the size of the lower end matches the inner cavity of the corresponding reaction tank. match; Each of the three-phase separation water tanks (303) is arranged around the outside of the corresponding air chamber (301); One end of each three-phase separation biogas pipe (304) is connected to the corresponding gas chamber (301) through the corresponding flange connection structure, and the other end passes through the corresponding reaction tank and passes through the flange. The interface is connected to the biogas treatment grid; After the sewage enters each of the three-phase separation modules (3), the biogas carried by the sewage mixes with the muddy water at the bottom of the three-phase separation module (3), and churns upward from the fender (302). pop out; Wherein, after the biogas rises to the top through the corresponding mud baffle (302), it is separated into the corresponding gas chamber (301), and then enters the biogas through the corresponding three-phase separation biogas pipe (304). processing grid; Under the action of gravity, the muddy water after separation of biogas descends along the outer wall of the mud baffle (302) to complete muddy water separation, and the sludge settles and slides to the bottom of the corresponding three-phase separation module (3); The clear liquid enters the subsequent sewage treatment system through the corresponding three-phase separation tank (303). 8. The modular multifunctional integrated anaerobic equipment according to claim 7, characterized in that a mud discharge pipe (602) is provided at the bottom of each three-phase separation module (3); Each sludge discharge pipe (602) is connected to a sludge pump (601) provided in the equipment room (6); The sludge pump (601) sucks out the sludge in the corresponding three-phase separation module (3) through each of the sludge discharge pipes (602), and then transports it to the hydrolysis module (1) that lacks sludge. ), the anaerobic module (2), or the hydrolysis module (1) and the anaerobic module (2) are discharged after sufficient sludge is collected. 9. The modular multifunctional integrated anaerobic equipment according to claim 8, characterized in that the sedimentation surface load of each three-phase separation module (3) is between 0.5m ³ /m ^2.d and 1m. ³ /m ² .d. 10. The modular multifunctional integrated anaerobic equipment according to claim 1, characterized in that the biogas treatment grid includes a water sealing grid (4) and a plurality of purification grids (5); The water sealing grid (4) is filled with water, and is provided with a water sealing grid air inlet pipe (401) and a water sealing grid air outlet pipe (402); The water sealing grid air inlet pipe (401) and the water sealing grid air outlet pipe (402) are both arranged vertically, and are fixed with the corresponding cover plate of the reaction tank. The upper ends are equipped with flange connection structures, and The upper ends are located above the cover of the corresponding reaction tank; The lower ends of the water seal air inlet pipes (401) extend into the corresponding water bodies; The lower ends of the water sealing grid air outlet pipes (402) are located above the water surface of the corresponding water body; Each purification compartment (5) is provided with a purification packing (503), and each is provided with a purification compartment air inlet pipe (501) and a purification compartment air outlet pipe (502); Each purification compartment air inlet pipe (501) and the corresponding purification compartment air outlet pipe (502) are arranged vertically, and are fixed to the corresponding cover plate of the reaction tank, and have a flange connection structure at the upper end. , and the upper ends are located above the cover of the corresponding reaction tank; The lower end of each purification compartment air inlet pipe (501) extends into the corresponding purification filler (503); The lower end of the air outlet pipe (502) of each purification compartment is located above the corresponding purification filler (503); Each of the anaerobic biogas pipes (203) and each of the three-phase separated biogas pipes (304) are connected to the water sealing grid (4), and the biogas is passed through the water sealing grid (4). In the water-sealing grid (4), the stabilized biogas flows through the air outlet pipe (402) of the water-sealing grid into multiple purification grids (5) in sequence; Each purification grid air inlet pipe (501) passes biogas under the corresponding purification filler (503) to perform dry desulfurization, and the purified gas is discharged from the corresponding purification grid air outlet pipe (502). Enter subsequent processing.