CN110590080A - A biofilm sewage treatment equipment - Google Patents

Abstract

The invention relates to the technical field of sewage treatment, in particular to a biofilm sewage treatment equipment, comprising a filter tank, an anaerobic tank, an aerobic tank and a collection and purification tank; the filter tank is divided into a filter area and a garbage storage area, and the filter area A fine-pore filter screen plate is arranged, and a sewage inlet is arranged on the top of the filter tank; several groups of anaerobic biofilms and flocculation pipes are arranged in the anaerobic tank, and several aerobic biofilms are arranged side by side in the aerobic tank; Ultraviolet lamp, photocatalyst plates are arranged on the opposite side walls of the collection and purification tank, and a drainage pipe is also arranged on the side wall of the collection and purification tank; the collection and purification tank is also provided with a backwash pipe, which runs through the anaerobic tank and the aerobic tank in turn. It extends to the inside of the filter tank, and the backwashing pipe is provided with a backwashing pump; the invention not only purifies the sewage by physical filtration, biological and chemical methods, but also circulates the water to realize self-purification and improve the effect of water purification. .

Description

A biofilm sewage treatment equipment

technical field

The invention relates to the technical field of sewage treatment, in particular to a biological membrane sewage treatment equipment.

Background technique

Domestic sewage is the wastewater discharged from the daily life of residents, mainly from residential buildings and public buildings. The pollutants contained in domestic sewage are mainly organic substances, such as proteins, carbohydrates, fats, ammonia nitrogen, etc. The organic matter in sewage is multiplied for nutrition, which can lead to the spread of infectious diseases, so domestic sewage must be treated before it is discharged.

There are many means of sewage treatment, the common ones include physical method, chemical method and biological method. Among them, biofilm method is a method of organic sewage treatment using microorganisms (ie biofilm) attached to the surface of certain solid objects. It is an ecosystem composed of highly dense aerobic bacteria, anaerobic bacteria, facultative bacteria, fungi, protozoa and algae. The anaerobic layer is decomposed by anaerobic bacteria.

The biofilm sewage treatment equipment in the prior art often only pays attention to the treatment of sewage, and ignores the clogging of the filter screen and the cleaning of the anaerobic tank and the aerobic tank during use. At this time, it is often necessary to manually clean the filter screen. And the removal of impurities in anaerobic and aerobic tanks not only increases labor consumption, but also easily leads to insufficient filtration during physical filtration, and the short service life of biofilms in anaerobic and aerobic tanks, which greatly reduces the Efficiency in sewage treatment.

SUMMARY OF THE INVENTION

In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide a biofilm sewage treatment equipment, which not only purifies the sewage by physical filtration, biological and chemical methods, but also circulates the water to realize self-purification and improve the cleanliness. water efficiency.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions:

A biofilm sewage treatment equipment, comprising a filter tank, an anaerobic tank, an aerobic tank and a collection and purification tank, the filter tank and the anaerobic tank are connected through a first flow pipe, the anaerobic tank, the The aerobic pool and the collection and purification pool are in turn connected through the second flow pipe;

The filter tank is divided into a filter area and a garbage storage area from top to bottom by a horizontal plate. The filter area is provided with a funnel-shaped fine-porous filter screen plate, and the bottom of the fine-porous filter screen plate penetrates the horizontal plate. and communicate with the garbage storage area, the top of the filter tank is provided with a sewage inlet, and the lower side of the filter tank is also provided with an outlet channel for discharging garbage;

The bottom of the anaerobic tank is horizontally provided with a first porous plate, the top of the first porous plate is arranged with several groups of anaerobic biofilms side by side, and the bottom of the first porous plate is filled with natural organic A flocculation tube of a polymer flocculant, the flocculation tube is provided with a flow hole, one end of the first flow tube is communicated with the filtration area, and the other end is communicated with the flocculation tube, and the aerobic tank is arranged side by side with Several aerobic biofilms;

The inner top of the collection and purification pool is provided with an ultraviolet lamp, the opposite side walls of the collection and purification pool are provided with photocatalyst plates, and the side walls of the collection and purification pool are also provided with drainage pipes;

The collection and purification tank is also provided with a backwashing pipe, the backwashing pipe runs through the anaerobic tank and the aerobic tank and extends to the inside of the filter tank in sequence, and the ends are connected with a sprinkler head, so the The sprinkler head is located above the fine-pore filter screen plate, and the backwash pipes located in the anaerobic tank and the aerobic tank are provided with a number of water permeable holes, and the backwash pipes are provided with a backwash pump. ;

Valves are provided on both the garbage discharge channel and the drain pipe.

Preferably, a return pipe is also provided on the outer side wall of the filter tank, one end of the return pipe is communicated with the garbage storage area, and the other end is communicated with the filter area. The return pipe located in the filter area Above the fine-hole filter screen plate, the return pipe is provided with a one-way valve and a second pump for sucking sewage in the garbage storage area into the filter area. A filter screen is arranged in the return pipe.

Preferably, a first pump is provided on the first circulation pipe.

Preferably, a second perforated plate is arranged in the aerobic tank, a plurality of the aerobic biofilms are arranged side by side on the top of the second perforated plate, and a serpentine shape is arranged at the bottom of the second perforated plate Arranged aeration pipes, either end of the aeration pipes extends outward through the side wall of the aerobic tank, and is connected with the exhaust port of the exhaust pump, extending into the aeration pipe in the aerobic tank A vent hole is provided on the pipe.

Preferably, a microporous membrane filter for filtering external bacteria is further provided in the aeration pipe and between the exhaust pump and the aerobic tank.

Preferably, each group of the anaerobic biological membranes is composed of two anaerobic biological valves, and the anaerobic biological valves are arranged in a crisscross pattern.

Preferably, a controller and a control panel are also provided on the side wall of the collection and purification tank, the exhaust pump, the backwash pump, the first suction pump, the second suction pump, the ultraviolet lamp and the control panel is respectively electrically connected to the controller, and the controller is electrically connected to an external power supply.

Preferably, a hanging ring is provided on the bottom side wall of the anaerobic tank, and the flocculation tube is arranged in an arcuate shape at the bottom of the anaerobic tank through the hanging ring.

Preferably, a control valve is also provided on the second flow pipe.

Compared with the prior art, the present invention has the following beneficial effects:

1. The present invention is provided with a filter tank, an anaerobic tank, an aerobic tank and a collection and purification tank, the filter tank is filtered by a physical method, and the anaerobic bacteria decompose the organic pollutants in the colloidal and dissolved state in the sewage in the anaerobic tank, The organic pollutants in the sewage meet the discharge standard, and the anaerobic tank is equipped with a flocculation tube filled with natural organic polymer flocculants. Absorb impurities in sewage, and at the same time, each group of anaerobic biofilms in the anaerobic tank is composed of two anaerobic biological valves, and the anaerobic biological valves are arranged in a crisscross pattern, which increases the contact area with sewage and improves sewage treatment. Efficiency; the aerobic biofilm in the aerobic tank further removes refractory organic matter and soluble inorganic substances such as nitrogen and phosphorus that can lead to eutrophication of the water body, so that the inorganic pollutants in the sewage meet the discharge standard. The aeration pipe, the air after filtering the external bacteria by the microporous membrane filter is discharged into the aerobic tank by the exhaust pump and the aeration pipe, which not only facilitates the growth of aerobic bacteria in the aerobic tank, but also makes the air in the aerobic tank easy to blow. The aerobic and anaerobic bacteria on the anaerobic biofilm and aerobic biofilm will not fall off, which increases the effect of aerobic and anaerobic bacteria on sewage. Finally, in the collection and purification tank, the photocatalytic effect is realized through the ultraviolet lamp and the photocatalyst plate, the undecomposed organic matter is oxidized and decomposed, the cell membrane of the bacteria and the protein of the solidified virus are destroyed, and the bacteria are killed and decomposed. Organic pollutants, The organic pollutants are decomposed into pollution-free water and carbon dioxide, and the organic and inorganic substances in the sewage are effectively removed.

2. The present invention is also provided with a backwash pump and a backwash pipe, and the other end of the backwash pipe runs through the anaerobic tank and the aerobic tank and extends into the filter tank in turn, and the end is connected with a spray head, which sprays The head is located above the fine-hole filter screen plate, and the backwash pipe located in the anaerobic tank and the aerobic tank is provided with a number of permeable holes. The water permeable hole is sprayed out, which realizes the flushing of the fine-porous filter screen plate, and also realizes the flushing of the anaerobic tank and aerobic tank, so that there is no need to manually disassemble and wash the fine-porous filter screen plate for disassembly and washing, which reduces labor consumption. And the washed sewage will be purified again through the above-mentioned filter tank, anaerobic tank, aerobic tank and collection purification tank, realizing the secondary utilization of sewage and avoiding the problem of mesh blockage of the fine-porous filter screen. Increase the efficiency of water purification.

Description of drawings

1 is a cross-sectional view of the internal structure of a biofilm sewage treatment equipment of the present invention;

Fig. 2 is the external structure diagram of a kind of biofilm sewage treatment equipment of the present invention;

3 is a top view of the arrangement of the flocculation pipes of a biofilm sewage treatment equipment according to the present invention;

FIG. 4 is an electrical connection diagram of a biofilm sewage treatment equipment according to the present invention.

Description of reference numbers:

1. Filter tank; 2. Anaerobic tank; 3. Aerobic tank; 4. Collection purification tank; 5. First flow pipe; 6. Controller; 7. Control panel; 8. Horizontal plate; 9. Filter area; 10. Garbage storage area; 11. Fine-porous filter screen plate; 12. Sewage inlet; 13. The first porous plate; 14. Anaerobic biofilm; 15. Flocculation tube; 16. The first pump; Porous plate; 18, aerobic biofilm; 19, ultraviolet lamp; 20, photocatalyst plate; 21, drain pipe; 22, sprinkler head; 23, backwash pipe; 24, backwash pump; 25, microporous membrane filtration 26, outlet channel; 27, return pipe; 28, one-way valve; 29, second suction pump; 30, filter screen; 31, aeration pipe; 32, exhaust pump.

Detailed ways

The following is a detailed description of the preferred embodiment and accompanying drawings 1-4 in conjunction with the accompanying drawings in the embodiments of the present invention.

A biofilm sewage treatment equipment, including a filter tank 1, an anaerobic tank 2, an aerobic tank 3 and a collection and purification tank 4, the filter tank 1 physically separates impurities in the sewage from the sewage, and the anaerobic tank 2 is used to The organic pollutants in the colloidal and dissolved state in the sewage are decomposed by anaerobic bacteria, the aerobic tank 3 can remove the refractory organic matter and the soluble inorganic substances such as nitrogen and phosphorus that can lead to eutrophication of the water body, and the collection and purification tank 4 is used for Undecomposed organic matter is decomposed into water and carbon dioxide and then discharged. The filter tank 1 and the anaerobic tank 2 are connected through the first flow pipe 5, and the anaerobic tank 2, the aerobic tank 3 and the collection purification tank 4 are connected through the second flow pipe. Connected, the sewage flows from the filter tank 1, the anaerobic tank 2, the aerobic tank 3 and the collection and purification tank 4 through the first flow pipe 5 and the second flow pipe in sequence.

The top of the filter tank 1 is provided with a sewage inlet 12. The sewage enters the filter tank 1 from the sewage inlet 12. The filter tank 1 is divided into a filter area 9 and a garbage storage area 10 by the horizontal plate 8 from top to bottom. There is a funnel-shaped fine-porous filter screen plate 11, and the fine-pored filter screen plate 11 in the filter area 9 separates sewage and impurities, so that the sewage is located on the horizontal plate 8, and the first circulation pipe 5 is provided with a first pump 16. , under the assistance of the first pump 16, the sewage enters the anaerobic tank 2 through the first circulation pipe 5, and the bottom of the fine-porous filter screen plate 11 penetrates the horizontal plate 8 and communicates with the garbage storage area 10. The impurities and part of the sewage enter the garbage storage area 10; the outer side wall of the filter tank 1 is also provided with a return pipe 27, one end of the return pipe 27 is communicated with the garbage storage area 10, and the other end is communicated with the filter area 9, and the garbage storage area 10 The sewage inside is sucked into the filter area 9 through the return pipe 27. The return pipe 27 in the filter area 9 is above the fine-hole filter screen plate 11. The sewage in 10 is sucked into the second pump 29 in the filter area 9, and the one-way valve 28 makes the sewage in the return pipe 27 only enter the filter area 9 from the garbage storage area 10, and is close to the return pipe 27 of the garbage storage area 10. A filter screen 30 is arranged inside, and the filter screen 30 is used to separate the sewage in the garbage storage area 10 from the garbage, so as to facilitate the water in the garbage storage area 10 to flow into the filter tank 1 through the return pipe 27 to be filtered again. The side wall of the filter tank 1 of the storage area 10 is also provided with a discharge channel 26 for discharging garbage.

The bottom of the anaerobic tank 2 is provided with a first perforated plate 13, and the top of the first perforated plate 13 is provided with several groups of anaerobic biofilms 14 side by side. Dissolved organic pollutants, each group of anaerobic biofilms 14 is composed of two anaerobic biological valves, and the anaerobic biological valves are crossed, which increases the contact area between the anaerobic biofilm 14 and the sewage, and improves the The water purification efficiency of anaerobic microorganisms, the bottom of the first porous plate 13 is provided with a flocculation tube 15 filled with a natural organic polymer flocculant, and the flocculation tube 15 is provided with a flow hole, and the first porous plate 13 and the flow hole are convenient for flocculation The organic polymer flocculant in the pipe 15 flocculates the organic matter in the sewage. One end of the first flow pipe 5 penetrates the side wall of the filter tank 1 and extends into the filter area 9, and the other end penetrates the side wall of the anaerobic tank 2. And it is connected with the flocculation tube 15; the bottom side wall of the anaerobic tank 2 is provided with a hanging ring, and the flocculation pipe 15 is arranged in an arcuate shape at the bottom of the anaerobic tank 2 through the hanging ring, which increases the contact area with the sewage, and the flocculation pipe The main component of the natural organic polymer flocculant in 15 is natural organic polymer, which not only does not pollute anaerobic microorganisms, but also achieves the purpose of assisting water purification.

A number of aerobic biofilms 18 are arranged side by side in the aerobic tank 3, a second porous plate 17 is arranged in the aerobic tank 3, and a number of aerobic biofilms 18 are arranged side by side on the top of the second perforated plate 17. The aerobic bacteria on the membrane 18 further removes the refractory organic matter and the soluble inorganic matter that can lead to eutrophication of the water body, such as nitrogen and phosphorus. Either end of the aeration pipe 31 extends outward through the side wall of the aerobic tank 3, and is connected with the exhaust port of the exhaust pump 32, and an exhaust hole is provided on the aeration pipe 32 extending into the aerobic tank 3, The exhaust pump can blow air into the aerobic tank 3, which not only provides oxygen for the aerobic bacteria in the aerobic tank 3, but also agitates the sewage in the aerobic tank 3, which increases the difference between the aerobic biofilm 14 and the sewage. The contact area improves the water purification efficiency of aerobic microorganisms; a microporous membrane filter 25 is arranged in the aeration pipe 31 between the exhaust pump 32 and the aerobic tank 3, and the microporous membrane filter 25 can filter bacteria in the air. It can prevent the bacteria in the air from entering the aerobic tank 3, thereby affecting the growth of aerobic bacteria in the aerobic tank 3.

The collection and purification tank 4 is also provided with a backwash pipe 23. The backwash pipe 23 runs through the anaerobic tank 2 and the aerobic tank 3 and extends to the interior of the filter tank 1 in turn. The treated water located in the collection and purification tank 4 passes through the backwash pipe. 23 enters the filter tank 1, the anaerobic tank 2 and the aerobic tank 3, and cleans the filter tank 1, the anaerobic tank 2 and the aerobic tank 3, and the end of the backwash pipe 23 is connected with a spray head 22 , the shower head 22 is located above the fine hole filter screen plate 11, the treated water is sprayed out through the shower head 22, and the fine hole filter screen plate 11 is washed by the treated water, so as to realize the fine hole filter screen plate 11. The purpose of self-cleaning can effectively avoid the blockage of the fine-porous filter screen plate 11 and increase the efficiency of water purification; the backwash pipes 23 located in the anaerobic tank 2 and the aerobic tank 3 are provided with a number of permeable holes. The water enters into the anaerobic tank 2 and the aerobic tank 3 through the permeable holes, and cleans the anaerobic tank 2 and the aerobic tank 3. The backwashing pipe 23 is provided with a backwashing pump 24, which is convenient for processing. The back water enters into the filter tank 1, the anaerobic tank 2 and the aerobic tank 3; the side wall of the collection purification tank 4 is also provided with a controller 6 and a control panel 7, the control panel 7 is provided with a switch, an exhaust pump 32 , the backwash pump 24, the first water pump 16, the second water pump 29, the ultraviolet lamp 19 and the control panel 7 are respectively electrically connected to the controller 6, and the controller 6 is electrically connected to an external power supply, and the external power supply supplies power to the electrical appliances The model of the controller 6 in the present invention is: MAM-100, the model of the control panel 7 is: LL86-4J-LN, the model of the exhaust pump 32 is: 4A12B25R37, the model of the backwash pump 24 is: ISG50-160, The suction force of the first suction pump 16 is higher than that of the second suction pump 29 , the model of the first suction pump 16 is: GD32-20, and the model of the second suction pump 16 is: NMDP41.

The second flow pipe is also provided with a control valve. The control valve between the anaerobic tank 2 and the aerobic tank 3 is used to make the sewage conduct a sufficient good reaction, and to facilitate the passage of the natural organic polymer flocculant in the flocculation pipe 15. The impurities in the sewage are fully flocculated, and the control valve between the aerobic tank 3 and the collection and purification tank 4 facilitates the sewage to be fully decomposed by aerobic bacteria in the aerobic tank 3; A valve is provided to facilitate drainage and waste discharge at any time.

When the present invention is in use, the controller 33 is electrically connected to the power supply, and then the first suction pump 16, the second suction pump 29 and the exhaust pump 32 are operated, and the sewage is discharged into the filter tank 1 through the sewage inlet 12, The sewage is first filtered through the fine-hole filter screen plate 11, the filtrate is between the fine-hole filter screen plate 11 and the horizontal plate 8, and the filter residue falls into the garbage storage area 10, and the sewage located in the garbage storage area 10 can also be returned through the backflow. The pipe 27 is sucked into the filter area 9 by the second suction pump 29, and then filtered again. The sewage located between the fine-porous filter screen plate 11 and the horizontal plate 8 is simply flocculated through the flocculation pipe 15, and then in the anaerobic tank. Anaerobic reaction is carried out in 2, when the anaerobic reaction in anaerobic tank 2 is carried out for a certain period of time, the control valve between anaerobic tank 2 and aerobic tank 3 is opened, and sewage flows into aerobic tank 3 and is mixed with aerobic tank 3. The bacteria react, and after the aerobic reaction in the aerobic tank 3 is carried out for a certain period of time, the control valve between the aerobic tank 3 and the collection purification tank 4 is opened, and the sewage enters the purification tank again, and the organic molecules are removed by the photocatalyst plate 20. Photocatalytic decomposition is carried out to form water and carbon dioxide. At this time, pure water is obtained, and the pure water can be discharged through the drain pipe 21. After the device has been running for a period of time, the filter tank 1, the anaerobic tank 2 and the aerobic tank need to be cleaned. 3. Cleaning is carried out, at this time, the control switch of the backwash pump 24 is turned on, so that the backwash pump 24 is operated, and the treated water in the collection purification tank 4 flows back to the filter tank 1 and the anaerobic tank 2 through the backwash pipe 23 And the aerobic tank 3, the treated water located in the filter tank 1 is sprayed down by the spray head 22 to clean the fine-porous filter screen plate 11, and the cleaned sewage will be purified by the above-mentioned operations.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention. Thus, provided that these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims (9)

1. The biomembrane sewage treatment equipment is characterized by comprising a filter tank (1), an anaerobic tank (2), an aerobic tank (3) and a collection and purification tank (4), wherein the filter tank (1) is communicated with the anaerobic tank (2) through a first circulating pipe (5), and the anaerobic tank (2), the aerobic tank (3) and the collection and purification tank (4) are sequentially communicated and connected through a second circulating pipe;

the filter tank (1) is divided into a filter area (9) and a garbage storage area (10) from top to bottom through a transverse plate (8), a funnel-shaped fine-hole filter screen plate (11) is arranged in the filter area (9), the bottom of the fine-hole filter screen plate (11) penetrates through the transverse plate (8) and is communicated with the garbage storage area (10), a sewage inlet (12) is formed in the top of the filter tank (1), and a discharge channel (26) for discharging garbage is further arranged on the lower side of the filter tank (1);

a first perforated plate (13) is horizontally arranged at the inner lower part of the anaerobic tank (2), a plurality of groups of anaerobic biological membranes (14) are arranged at the top of the first perforated plate (13) side by side, a flocculation pipe (15) filled with a natural organic polymeric flocculant is arranged at the bottom of the first perforated plate (13), a circulation hole is formed in the flocculation pipe (15), one end of the first circulation pipe (5) is communicated with the filtering area (9), the other end of the first circulation pipe is communicated with the flocculation pipe (15), and a plurality of aerobic biological membranes (18) are arranged in the aerobic tank (3) side by side;

an ultraviolet lamp (19) is arranged at the top in the collecting and purifying tank (4), a photocatalyst plate (20) is arranged on the opposite side wall in the collecting and purifying tank (4), and a drain pipe (21) is also arranged on the side wall of the collecting and purifying tank (4);

the collection and purification tank (4) is also communicated with a backwashing pipe (23), the backwashing pipe (23) sequentially penetrates through the anaerobic tank (2) and the aerobic tank (3) and extends towards the interior of the filter tank (1), the end part of the backwashing pipe is communicated with a spray head (22), the spray head (22) is positioned above the fine-hole filter screen plate (11), the backwashing pipe (23) positioned in the anaerobic tank (2) and the aerobic tank (3) is provided with a plurality of water-permeable holes, and the backwashing pipe (23) is provided with a backwashing pump (24);

the garbage discharging channel (26) and the water discharging pipe (21) are provided with valves.

2. The biomembrane sewage treatment device according to claim 1, wherein a return pipe (27) is further arranged on the outer side wall of the filtering tank (1), one end of the return pipe (27) is communicated with the garbage storage area (10), the other end of the return pipe is communicated with the filtering area (9), the return pipe (27) positioned in the filtering area (9) is arranged above the fine-pore filtering screen plate (11), the return pipe (27) is provided with a one-way valve (28) and a second water suction pump (29) for sucking the sewage in the garbage storage area (10) into the filtering area (9), and a filter screen (30) is arranged in the return pipe (27) close to the garbage storage area (10).

3. A biofilm sewage treatment plant according to claim 1, wherein a first suction pump (16) is arranged on said first flow pipe (5).

4. The biofilm sewage treatment apparatus as recited in claim 1, wherein a second perforated plate (17) is provided in said aerobic tank (3), a plurality of said aerobic biofilms (18) are provided side by side on top of said second perforated plate (17), aeration pipes (31) are provided in a serpentine arrangement on bottom of said second perforated plate (17), either end of said aeration pipes (31) extends outwardly through the side wall of said aerobic tank (3) and is connected with an exhaust port of an exhaust pump (32), and exhaust holes are provided on said aeration pipes (32) extending into said aerobic tank (3).

5. The apparatus of claim 4, wherein a microporous membrane filter (25) for filtering external bacteria is further disposed in the aeration pipe (31) between the air exhaust pump (32) and the aerobic tank (3).

6. The biofilm sewage treatment apparatus as claimed in claim 1, wherein each set of said anaerobic biofilms (14) consists of two anaerobic bio-valves, and said anaerobic bio-valves are arranged in a criss-cross pattern.

7. The biofilm sewage treatment device according to claim 5, wherein a controller (6) and a control panel (7) are further arranged on the side wall of the collection and purification tank (4), the exhaust pump (32), the back flush pump (24), the first water pump (16), the second water pump (29), the ultraviolet lamp (19) and the control panel (7) are respectively electrically connected with the controller (6), and the controller (6) is electrically connected with an external power supply.

8. The biofilm sewage treatment device according to claim 1, wherein a hanging ring is arranged on the bottom side wall of the anaerobic tank (2), and the flocculation tubes (15) are arranged in an arch shape at the bottom of the anaerobic tank (2) through the hanging ring.

9. The apparatus of claim 1, wherein the second flow pipe is further provided with a control valve.