WO2021189929A1

WO2021189929A1 - Harmless one-step treatment device for feces

Info

Publication number: WO2021189929A1
Application number: PCT/CN2020/133130
Authority: WO
Inventors: 王云山; 贺同雷; 韩庆宇
Original assignee: 广东象博生态科技有限公司
Priority date: 2020-03-23
Filing date: 2020-12-01
Publication date: 2021-09-30
Also published as: CN111392963B; CN111392963A

Abstract

A harmless one-step treatment device for feces. The harmless one-step treatment device comprises a housing (1), a sewage tank (15), a reaction tank (5), and a solid material box (24). The sewage tank (15) and the reaction tank (5) are disposed in the middle of the housing (1), the solid material box (24) is disposed at one end of the housing (1), a fecal feeding pipe (16) is provided at the other end of the housing (1), and a drainage pipe (17) is provided at the bottom of the housing (1). A filtering plate (2) and a filtering screen (27) are provided in the sewage tank (15), and large residues are removed by means of secondary filtering. Several biological reaction films (6) are provided in the reaction tank (5), bacterial films (nitrifying bacteria and the like) for sewage treatment are attached to the reaction films (6), and the reaction films (6) are rotatably mounted on a support frame (7). A residue scraping frame (8) is provided above the reaction tank (5), and mud on the biological reaction films (6) is scraped off by virtue of the residue scraping frame (8) and is fed into the solid material box (24). A heating plate (11) is provided in the solid material box (24), and a fan (14) is provided on one side. By further heating, sterilizing, and drying by virtue of the heating plate (11) and the fan (14), an organic non-toxic harmless flower and plant fertilizer can be obtained.

Description

One-step treatment device for harmless feces

Technical field

The invention mainly belongs to the harmless treatment technology of animal feces, especially a one-step treatment device for harmless sludge.

Background technique

The aquaculture industry is an important part of China's agricultural production, especially the breeding of laying hens, which can not only provide people with delicious chicken delicacies, but also provide the food industry with eggs as raw materials for food processing, but at the same time creating economic benefits The treatment of chicken manure has always been a key issue. The output of chicken manure is large and the purification cost is high. The increase of SS), organic matter and microorganism content will change the physical and chemical characteristics of the water body and the composition of the biological community, and make the water quality worse. A large number of pathogenic microorganisms contained in layer manure will spread through water bodies or through aquatic animals and plants, endangering the health of humans and animals. In addition, the manure is rich in nutrients such as nitrogen and phosphorus. If excessively enters slow-flowing water bodies such as lakes, estuaries, bays, etc., it will cause eutrophication of the water bodies, which is related to the environmental sanitation on and off the laying hen farm. The problem is related to the animal husbandry’s contribution to energy conservation and emission reduction, and it also restricts the sustainable development of laying hens. In addition to the above-mentioned pollution, the stench produced by farm manure will pollute the surrounding atmospheric environment. The infectious routes of laying hen infectious diseases, parasitic diseases and human and poultry comorbidities have changed the original methods of artificial manure removal and composting fermentation. At present, most of the methods used are mechanized or semi-mechanized manure treatment. The present invention adopts The reaction tank inside the shell purifies the fecal liquid, so as to discharge the outer end of the shell for reuse.

A sewage treatment device at the current stage has many shortcomings: for example, the sewage treatment cannot be subdivided, and the liquid and solid materials inside the sewage cannot be treated separately, which results in more The waste, and the procedures in many treatment processes are more complicated, and waste labor and materials.

Summary of the invention

(1) Technical problems to be solved

In order to solve the above-mentioned problems of the prior art, the purpose of the present invention is to provide a one-step treatment device for the harmlessness of sludge, so as to solve the problem that the treatment of sludge cannot be subdivided as proposed in the background art. The solid materials inside the feces cannot be treated separately, which results in more waste, and in many treatment processes, the procedures are more complicated, and labor and materials are wasted.

(2) Technical solution

In order to achieve the above objectives, the main technical solutions adopted by the present invention include:

A one-step treatment device for harmless feces, which includes:

The housing (1), the housing (1) is provided with a feed pipe (16) and a drain pipe (17), and the feed pipe (16) is located at one end of the housing (1), so The drainage pipe (17) is located at the bottom end of the housing (1); a sewage tank (15) is provided in the housing (1), and the sewage tank (15) is located at one end of the housing (1), to be treated After being diluted by the water discharged from the drain pipe (17), the feces enter the sewage tank (15) through the feed pipe (16);

The sewage tank (15) is provided with a filter plate (2), the filter plate (2) is located in the middle of the sewage tank (15) and close to the middle and lower part of the tank; the filter plate (2) is provided with a fixed A water pipe (26) is installed on one end of the fixed frame (25), a filter screen (27) is installed on the water pipe (26), and the filter plate (2) is in the form of shutters; from the sewage tank After the sewage of (15) is initially filtered by the filter plate (2), the sewage passes through the water delivery pipe (26) and then is coarsely filtered through the filter screen (27), and each water delivery pipe (26) is connected to a filter screen (27) respectively;

One end of the sewage tank (15) is equipped with a fine-pore sieve plate (3), and one end of the fine-pore sieve plate (3) is equipped with a deflector (4). The filtrate is coarsely filtered by the filter screen (27) The reaction tank (5) enters the reaction tank (5) through the sieve plate (3) and baffle plate (4), and the reaction tank (5) is located in the middle position inside the shell (1); the reaction tank ( 5) There are several bioreactive membranes (6) inside. The bioreactive membranes (6) are corrosion-resistant porous fibers with sewage treatment bacterial membranes attached to their surfaces. The bioreactive membranes (6) are rotatably installed on the support frame. (7) Up; the water from the reaction tank (5) is discharged through the drain pipe (17);

A residue scraper (8) is arranged above the middle of the reaction tank (5), and the residue scraper (8) is correspondingly arranged directly above the biological reaction membrane (6); the residue scraper (8) A motor (10) is installed at one end of the slag scraper (8), a slag scraper (18) is arranged on the slag scraper (8), and the slag scraper (18) is located in the middle position on the slag scraper (8); A scraping strip (22) is provided on the plate (18), and the scraping strip (22) is located at the bottom end of the slag scraper (18) for scraping the mud on the biological reaction membrane (6); the scraping rack (8) ) Is provided with a transmission shaft (21), and the transmission shaft (21) is located on the left and right sides of the slag scraper (18), the transmission shaft (21) is provided with a main shaft (23), and the main shaft (23) is located in the transmission The end of the shaft (21); the main shaft (23) is engaged with a chain (20), the outer end of the main shaft (23) is also installed with a pulley (19), the pulley (19) and the motor (10) The output shaft is connected; the motor (10) drives the pulley (19) and the main shaft (23) to rotate, and the chain (20) engaged on the main shaft (23) moves back and forth to drive the slag scraper (18) fixedly installed on the chain (20) ) Move to scrape the mud on the bioreactive membrane (6) back and forth;

A solid material box (24) is installed at one end of the reaction tank (5), a heating plate (11) and a slag box (12) are arranged in the solid material box (24), and the heating plate (11) is located The two ends of the solid material box (24), the slag material box (12) is located in the middle position of the solid material box (24), and is used to contain the mud scraped off by the slag scraper (18). An air box (13) is installed at one end of the material box (24), and a fan (14) is arranged in the air box (13); the heating plate (11) and the fan (14) are used to control the slag box (24) ) The inner mud is further subjected to high-temperature sterilization and harmless treatment and drying treatment.

In a preferred embodiment of the present invention, the slag scraper (8) arranged above the middle of the reaction tank (5) can be connected with lifting cylinders at both ends, and the slag scraper (8) is lowered or raised through the lifting cylinders. In order to make the scraping strip (22) on the slag scraper (18) approach or move away from the biological reaction film (6).

In a preferred embodiment of the present invention, the reaction tank (5) is adjacent to the solid material box (24) and is located in the middle of the housing (1), and the reaction tank (5) passes through a fixed plate ( 9) It is fixedly connected with the solid material box (24).

In a preferred embodiment of the present invention, the filter plate (2) is fixedly connected to the sewage tank (15) through a fixing frame (25), and the filter plate (2) is connected to the filter screen (27) through the fixing frame (25) Fixed connection.

In a preferred embodiment of the present invention, the drive shaft (21) is fixedly connected to the scraper (22) through a scraper (18), and the plurality of scrapers (22) are arranged on the scraper at intervals. Below the slag plate (18); the slag scraper (18) extends toward the outside of both ends of the slag scraper (8) to match the width of the bioreactive membrane (6).

In a preferred embodiment of the present invention, the reaction tank (5) is adjacent to the sewage tank (15), and is fixedly connected to the sewage tank (15) through the fine-pore sieve plate (3).

In a preferred embodiment of the present invention, the bottom of the fine sieve plate (3) has fine sieve holes, and the height of the deflector (4) is higher than the height of the fine sieve holes, and The cross section of the baffle (4) is V-shaped.

In a preferred embodiment of the present invention, the scraper strip (22) is made of hard silica gel or hard rubber, and the scraper strip (22) has a certain length and is formed with a curved portion capable of containing mud.

In a preferred embodiment of the present invention, an airtight plastic cover is installed on the top of the slag scraper (8).

In a preferred embodiment of the present invention, the number of the bioreaction membrane (6) is several, and the support frame (7) is four rotating shafts connected to both sides of the reaction tank (5); Among the four rotating shafts, one is a driving shaft and is connected to a stepping motor, and the remaining three are driven shafts; the bioreactive membrane (6) is wound on the four rotating shafts.

(3) Beneficial effects

The beneficial effects of the present invention are:

(1) In the present invention, a filter plate is arranged inside the sewage tank to filter the larger particles of impurities in the sewage tank, thereby facilitating the treatment of the next process, and two filtering procedures are used to treat the sewage in the sewage tank during the filtering process. The filtration treatment effectively increases the reaction efficiency inside the reaction tank, reduces the reaction time, and enables the liquid in the feces to be purified quickly. The reaction tank is equipped with a slag scraper to connect the drive shaft. Through the connection of the drive shaft and the chain, the scraping strip of the slag scraper on the inner side of the chain can clean the sludge on the surface of the biofilm. The scraper is made of hard silica gel or hard rubber, and has a curved part to hold the slime; when the scraper moves to the position above the solid material box, the lifting cylinder shakes up and down to loosen the sludge into broken mud and fall into it. In the solid material box, the heating plate is used to heat up and sterilize, and the fan is air-dried to obtain harmless organic fertilizer for planting crops or landscape plants.

(2) The slag scraper of the present invention is arranged in the middle position of the reaction tank, and the air-tight plastic cover and the shell are sealed on the slag scraper to further prevent the diffusion of peculiar smell.

Description of the drawings

Figure 1 is a schematic diagram of the structure of the present invention.

Fig. 2 is a top view of the heating plate of the present invention.

Figure 3 is a front view of the scraper of the present invention.

Fig. 4 is a top view of the transmission shaft of the present invention.

Fig. 5 is a schematic diagram of the structure of the filter screen of the present invention.

Fig. 6 is a schematic diagram of the structure of the pore sieve plate and the baffle plate of the present invention.

Fig. 7 shows the fixing structure of the bioreactor membrane in the preferred embodiment of the present invention.

In the picture: 1. Shell; 2. Filter plate; 3. Fine sieve plate; 4. Flow deflector; 5. Reaction tank; 6. Bioreaction membrane; 7. Support frame; 8. Scraper frame; 9. Fixed plate; 10. Motor; 11. Heating plate; 12. Slag tank; 13. Air box; 14. Fan; 15. Sewage tank; 16. Feed pipe; 17, Drain pipe; 18. Slag scraper; 19 , Pulley; 20, chain; 21, drive shaft; 22, scraper; 23, main shaft; 24, solid material box; 25, fixed frame; 26, water pipe; 27, filter screen.

Detailed ways

In order to better explain the present invention and facilitate understanding, the following describes the present invention in detail through specific embodiments in conjunction with the accompanying drawings.

Please refer to Figure 1-2, which is a preferred embodiment of the present invention: a one-step treatment device for harmless fecal waste, which includes:

The housing 1 is provided with a feed pipe 16 and a drain pipe 17, and the feed pipe 16 is located at one side end of the housing 1. The drain pipe 17 is located at the bottom end of the housing 1. A sewage tank 15 is provided in the housing 1, and the sewage tank 15 is located at one end of the housing 1. The sewage to be treated is diluted by the water discharged from the drainage pipe 17, and then enters the sewage tank 15 through the feed pipe 16.

A filter plate 2 is provided in the sewage tank 15, and the filter plate 2 is located in the middle of the sewage tank 15 and close to the middle and lower part of the tank. As shown in FIG. 4, the filter plate 2 is fixed by a fixing frame 25. A water delivery pipe 26 is installed at one end of the fixing frame 25, a filter screen 27 is provided on the water delivery pipe 26, and the filter plate 2 is in the form of a louver. After the sewage from the sewage tank 15 is initially filtered by the filter plate 2, the sewage passes through the water pipe 26 and then passes through the filter screen 27 for coarse filtration. Each water delivery pipe 26 is connected to a filter net 27 respectively. One end of the sewage tank 15 is installed with a fine-pore sieve plate 3, and one end of the fine-pore sieve plate 3 is installed with a deflector 4. Water can only enter the reaction tank 5 when it rises to the top of the deflector 4, and a certain amount of sludge can be stored between the sieve plate 3 and the deflector 4. Both the fine-pore sieve plate 3 and the deflector 4 are detachable plates.

The filtrate coarsely filtered by the filter mesh 27 enters the reaction tank 5 through the sieve plate 3 and the baffle 4 into the reaction tank 5, and the reaction tank 5 is located in the middle position inside the shell 1. Several biological reaction membranes 6 are arranged in the reaction tank 5. The biological reaction membrane 6 is a corrosion-resistant porous fiber with a sewage treatment bacterial membrane attached to its surface. The biological reaction membrane 6 is rotatably installed on the support frame 7 to prevent the reaction The water from the pool 5 is discharged through the drain pipe 17.

As shown in FIG. 7, the number of bioreactive membranes 6 is several. The supporting frame 7 is four rotating shafts, which are connected to both sides of the reaction cell 5; among the four rotating shafts, one is a driving shaft and is connected to a stepping motor, and the remaining three are driven shafts; the biological reaction membrane 6 is arranged on the four rotating shafts. Through this structure, a part of the biological reaction membrane 6 can always be immersed in the water body of the reaction tank 5, and the top part can just be exposed to the water surface. The sludge on the biological reaction film 6 exposed on the water surface can be scraped away.

A slag scraper 8 is arranged above the middle of the reaction tank 5, and the slag scraper 8 is correspondingly arranged directly above the biological reaction membrane 6. A motor 10 is installed at one end of the slag scraper 8, a slag scraper 18 is arranged on the slag scraper 8, and the slag scraper 18 is located in the middle position on the slag scraper 8.

As shown in FIGS. 3-4, a scraper strip 22 is provided on the slag scraper 18, and the scraper 22 is located at the bottom end of the slag scraper 18 for scraping the mud on the biological reaction membrane 6. The slag scraper 8 is provided with a transmission shaft 21, and the transmission shaft 21 is located on the left and right sides of the slag scraper 18, the transmission shaft 21 is provided with a main shaft 23, and the main shaft 23 is located at the end of the transmission shaft 21. The main shaft 23 is engaged with a chain 20, and the outer end of the main shaft 23 is also equipped with a pulley 19, which is connected to the output shaft of the motor 10; The chain 20 moves back and forth, driving the slag scraper 18 fixedly installed on the chain 20 to move back and forth to scrape the mud on the biological reaction membrane 6 back and forth. The scraper 22 is made of hard silica gel or hard rubber, and the scraper 22 has a certain length and is formed with a curved portion capable of containing mud.

As shown in FIG. 1, a solid material box 24 is installed at one end of the reaction tank 5, and a heating plate 11 and a slag material box 12 are provided in the solid material box 24. The heating plates 11 are located at two ends of the solid material box 24. The slag bin 12 is located in the middle of the solid bin 24 and is used to contain the mud scraped by the slag scraper 18. A wind box 13 is installed at one end of the solid material box 24, and a fan 14 is installed in the wind box 13. The heating plate 11 and the fan 14 are used to further carry out high temperature sterilization and harmless treatment and drying treatment on the mud in the slag box 24.

Further, the scraping frame 8 arranged above the middle of the reaction tank 5 can be connected with lifting cylinders at both ends, and the scraping frame 8 is lowered or raised by the lifting cylinders so that the scraping strips 22 on the scraping plate 18 are directed toward the organisms. The reaction film 6 is close to or far away.

Further, the reaction tank 5 is adjacent to the solid material tank 24 and is located in the middle of the housing 1, and the reaction tank 5 is fixedly connected to the solid material tank 24 through a fixing plate 9.

Further, the filter plate 2 is fixedly connected to the sewage tank 15 through a fixed frame 25, and the filter plate 2 is fixedly connected to the filter screen 27 through a fixed frame 25.

Further, the drive shaft 21 is fixedly connected to the scraper 22 through the scraper 18, and a plurality of scrapers 22 are arranged below the scraper 18 at intervals; the scraper 18 faces the two sides of the scraper 8 The ends extend outside to match the width of the bioreactive film 6.

Further, the reaction tank 5 is adjacent to the sewage tank 15 and is fixedly connected to the sewage tank 15 through the fine-pore sieve plate 3.

As shown in FIG. 6, further, the bottom of the fine mesh sieve plate 3 has fine sieve holes, and the height of the deflector 4 is higher than the height of the fine sieve holes, and the deflector 4 The cross section is V-shaped.

Further, an airtight plastic cover is installed on the top of the slag scraper 8.

Working principle: When the equipment is in use, the sludge is input through the feed pipe 16 on the housing 1, so that the sludge is stored through the sewage tank 15, and the filter plate is fixed by the fixed frame 25 inside the sewage tank 15 At position 2, the sludge inside the sewage tank 15 is filtered through the filter plate 2, and the filter screen 27 is connected through the water pipe 26 at one end of the fixing frame 25, so that the sewage inside the sewage tank 15 is filtered again. The filtered liquid is transmitted through the sieve plate 3 with fine holes, and then gradually rises over the baffle plate 4, enters the reaction tank 5 for storage, and fixes the position of the biological reaction membrane 6 through the fixing frame 7 inside the reaction tank 5, thereby The sludge liquid is purified by the bioreactive membrane 6 and discharged through the drain pipe 17, which can be used for the dilution of sludge. A slag scraper 8 is provided in the upper middle of the reaction tank 5, and the slag scraper 18 is driven by the motor 10 to drive the scraper 22 set below it to scrape the part of the biological reaction membrane 6 that is exposed to the water surface. Inside the solid material box 24, the sludge is first heated and dried by the heating plate 11, and then air-dried by the fan 14 to obtain organic fertilizer, which can be recycled.

For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description, and therefore it is intended to fall within the claims. All changes within the meaning and scope of the equivalent elements of are included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

A one-step treatment device for harmless fecal waste, which is characterized in that it comprises a housing (1) on which a feed pipe (16) and a drain pipe (17) are arranged, and the housing (1) The feed pipe (16) is located at one side end of the housing (1), and the drain pipe (17) is located at the bottom end of the housing (1); a sewage tank (15) is provided in the housing (1), And the sewage tank (15) is located at one end of the housing (1), the sewage to be treated is diluted by the water discharged from the drain pipe (17), and then enters the sewage tank (15) through the feed pipe (16);

The sewage tank (15) is provided with a filter plate (2), the filter plate (2) is located in the middle of the sewage tank (15) and close to the middle and lower part of the tank; the filter plate (2) is provided with a fixed A water pipe (26) is installed on one end of the fixed frame (25), a filter screen (27) is installed on the water pipe (26), and the filter plate (2) is in the form of shutters; from the sewage tank After the sewage of (15) is initially filtered by the filter plate (2), the sewage passes through the water delivery pipe (26) and then is coarsely filtered through the filter screen (27), and each water delivery pipe (26) is connected to a filter screen (27) respectively;

One end of the sewage tank (15) is equipped with a fine-pore sieve plate (3), and one end of the fine-pore sieve plate (3) is equipped with a deflector (4). The filtrate is coarsely filtered by the filter screen (27) The reaction tank (5) enters the reaction tank (5) through the sieve plate (3) and baffle plate (4), and the reaction tank (5) is located in the middle position inside the shell (1); the reaction tank ( 5) There are several bioreactive membranes (6) inside. The bioreactive membranes (6) are corrosion-resistant porous fibers with sewage treatment bacterial membranes attached to their surfaces. The bioreactive membranes (6) are rotatably installed on the support frame. (7) Up; the water from the reaction tank (5) is discharged through the drain pipe (17);

A residue scraper (8) is arranged above the middle of the reaction tank (5), and the residue scraper (8) is correspondingly arranged directly above the biological reaction membrane (6); the residue scraper (8) A motor (10) is installed at one end of the slag scraper (8), a slag scraper (18) is arranged on the slag scraper (8), and the slag scraper (18) is located in the middle position on the slag scraper (8); A scraping strip (22) is provided on the plate (18), and the scraping strip (22) is located at the bottom end of the slag scraper (18) for scraping the mud on the biological reaction membrane (6); the scraping rack (8) ) Is provided with a transmission shaft (21), and the transmission shaft (21) is located on the left and right sides of the slag scraper (18), the transmission shaft (21) is provided with a main shaft (23), and the main shaft (23) is located in the transmission The end of the shaft (21); the main shaft (23) is engaged with a chain (20), the outer end of the main shaft (23) is also installed with a pulley (19), the pulley (19) and the motor (10) The output shaft is connected; the motor (10) drives the pulley (19) and the main shaft (23) to rotate, and the chain (20) engaged on the main shaft (23) moves back and forth to drive the slag scraper (18) fixedly installed on the chain (20) ) Move to scrape the mud on the bioreactive membrane (6) back and forth;

A solid material box (24) is installed at one end of the reaction tank (5), a heating plate (11) and a slag box (12) are arranged in the solid material box (24), and the heating plate (11) is located The two ends of the solid material box (24), the slag material box (12) is located in the middle position of the solid material box (24), and is used to contain the mud scraped off by the slag scraper (18). An air box (13) is installed at one end of the material box (24), and a fan (14) is arranged in the air box (13); the heating plate (11) and the fan (14) are used to control the slag box (12). ) The inner mud is further subjected to high-temperature sterilization and harmless treatment and drying treatment.
The one-step treatment device for harmless feces according to claim 1, characterized in that: the scraping frame (8) arranged above the middle of the reaction tank (5) can be connected with lifting cylinders at both ends , The scraper frame (8) is lowered or raised by a lifting cylinder to make the scraper (22) on the scraper plate (18) approach or move away from the biological reaction film (6).
The one-step treatment device for harmless sewage treatment according to claim 1, characterized in that: the reaction tank (5) is adjacent to the solid material box (24) and is located in the middle of the housing (1) Position, and the reaction tank (5) is fixedly connected with the solid material box (24) through the fixing plate (9).
The one-step treatment device for harmless sewage treatment according to claim 1, wherein the filter plate (2) is fixedly connected to the sewage tank (15) through a fixing frame (25), and the filter plate ( 2) The fixed frame (25) is fixedly connected with the filter screen (27).
The one-step treatment device for harmless feces according to claim 2, characterized in that: the transmission shaft (21) is fixedly connected with the scraper (22) through the scraper (18), and the Several scraping strips (22) are arranged below the scraping plate (18) at intervals; the scraping plate (18) extends toward the outside of both ends of the scraping frame (8) to interact with the bioreactive membrane (6). ) To match the width.
A one-step treatment device for harmless fecal waste according to claim 1, characterized in that: the reaction tank (5) is adjacent to the sewage tank (15), and passes through the fine-pore sieve plate (3) and The sewage tank (15) is fixedly connected.
The one-step treatment device for harmless fecal waste according to claim 1, characterized in that: the bottom of the sieve plate (3) has small sieve holes, and the guide plate (4) has small sieve holes. The height is higher than the height of the small sieve holes, and the cross section of the baffle (4) is V-shaped.
The one-step treatment device for harmless fecal waste according to claim 1, wherein the scraper strip (22) is made of hard silica gel or hard rubber, and the scraper strip (22) is made of hard silica gel or hard rubber. It has a certain length and is formed with a curved part that can accommodate mud.
The one-step treatment device for harmless fecal waste according to claim 2, characterized in that: an airtight plastic cover is installed on the top of the scraper frame (8).
The one-step treatment device for harmless fecal waste according to claim 1, characterized in that: the number of the biological reaction membrane (6) is several, and the support frame (7) is four rotating shafts, Are connected to both sides of the reaction tank (5); among the four rotating shafts, one is a driving shaft and is connected to a stepping motor, and the remaining three are driven shafts; the biological reaction membrane (6) is wound around the On four shafts.