Unpowered domestic sewage treatment device

Abstract

The utility model relates to an unpowered domestic sewage treatment device and belongs to the technical field of sewage treatment. The sewage treatment device is arranged in a low-lying place, domestic sewage is discharged into the anaerobic tank by utilizing water pressure formed by terrain height difference, and enters the anoxic tank for denitrification treatment after automatic multi-layer baffling, and the baffling mode can promote sufficient mixing of sludge and sewage entering the anaerobic area, so that organic matters are in sufficient contact with anaerobic microorganisms, the decomposition of the organic matters is accelerated, and the sewage treatment efficiency is improved. Sewage automatically flows into the aerobic zone after reacting in the anoxic tank and is used for degrading organic matters and nitrifying, automatic flowing and uniform distribution functions of water flow are realized by utilizing liquid level difference in a plurality of step-shaped weir flow grooves, and finally the water flow flows into the filtering zone to remove suspended solids and fine particles, so that further purification of water quality is realized. The biochemical treatment function of the domestic sewage is realized, and the device can automatically operate, does not need additional power, and is low in maintenance and operation cost, compact in structure, small in occupied area and low in implementation difficulty.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and particularly relates to a non-powered domestic sewage treatment device. Background Art

[0002] Domestic sewage contains a large amount of pollutants such as organic matter, suspended solids, and pathogenic microorganisms. If directly discharged without effective treatment, it will cause serious pollution to the environment.

[0003] Traditional sewage treatment devices often rely on external power to achieve processes such as sewage lifting and mixing. This not only increases energy consumption but also raises the maintenance cost and operational complexity. In addition, traditional sewage treatment systems occupy a large area, making it difficult to implement in some remote areas, rural areas, or small-scale communities. Summary of the Utility Model

[0004] In order to overcome the problems in the background art that traditional sewage treatment devices often rely on external power to achieve processes such as sewage lifting and mixing, which not only increases energy consumption but also raises the maintenance cost and operational complexity. In addition, traditional sewage treatment systems occupy a large area, making it difficult to implement in some remote areas, rural areas, or small-scale communities, the utility model provides a non-powered domestic sewage treatment device; the device is set in a low-lying area, and the water pressure formed by the height difference of the terrain is used to discharge domestic sewage into the anaerobic tank. After automatic multi-layered folding flow, it enters the anoxic tank for denitrification treatment. The folding flow method can promote the full mixing of sludge and the sewage entering the anaerobic zone, enabling the full contact between organic matter and anaerobic microorganisms and accelerating the decomposition of organic matter. After the reaction in the anoxic tank, the sewage automatically flows into the aerobic zone for degrading organic matter and nitrification, and the liquid level difference in multiple stepped weir troughs is used to achieve the automatic flow and uniform distribution function of water flow. Finally, it flows into the filtration zone to remove suspended solids and fine particles, further purifying the water quality and realizing the biochemical treatment function of domestic sewage. The device can operate automatically without external power, with low maintenance and operation costs, and is structurally compact, occupies a small area, and has low implementation difficulty.

[0005] To achieve the above object, the present utility model is realized through the following technical solutions: A non-powered domestic sewage treatment device mainly includes a biological treatment tank, a first partition board, an inclined plate, an anaerobic zone, an anoxic zone, an aerobic zone, a first baffle plate, a second baffle plate, a third baffle plate, a second partition board, and a third partition board. The biological treatment tank is divided into a biological reaction zone and a filtration zone by the first partition board. The biological reaction zone is divided into an upper part and a lower part by the inclined plate. The upper part is the aerobic zone, and the lower part is divided into an anaerobic zone and an anoxic zone by the second partition board. An inlet communicating with the anaerobic zone is opened on the side wall of the biological treatment tank. A through hole for sewage to flow through is opened on the second partition board. The first baffle plate, the second baffle plate, and the third baffle plate are arranged at equal intervals in the anaerobic zone. Through grooves for sewage to flow through are opened at the tops of the first baffle plate and the third baffle plate and at the bottom of the second baffle plate. An outlet hole communicating with the aerobic zone is opened at the top of the inclined plate, and the outlet hole is located at the top of the anoxic zone. A plurality of first vertical plates are arranged at equal intervals on the upper surface of the inclined plate. The inclined plate is divided into a plurality of weir flow grooves by the plurality of first vertical plates. Polyurethane fillers are filled in the weir flow grooves, and weir plates are arranged at the tops of the vertical plates. The filtration zone is divided into two filtration ponds and a buffer pond for extending the residence time of sewage by two horizontally arranged third partition boards. Polyurethane fillers are filled in the filtration ponds. A drain port communicating with the buffer pond is opened on the outer wall of the biological treatment tank.

[0006] Air distribution pipes are installed in both the anoxic zone and the aerobic zone, and a plurality of aeration heads are arranged at equal intervals on the air distribution pipes.

[0007] Activity doors for facilitating viewing the internal situation are opened on both sides of the top of the biological treatment tank.

[0008] The beneficial effects of the present utility model are as follows:

[0009] The present utility model is arranged in a low-lying area, and the water pressure formed by the height difference of the terrain is used to discharge domestic sewage into the anaerobic tank. After automatic multi-layer baffle flow, it enters the anoxic tank for denitrification treatment. The baffle flow mode can promote the full mixing of sludge and sewage entering the anaerobic zone, enabling the organic matter to fully contact with anaerobic microorganisms and accelerating the decomposition of organic matter. After the sewage reacts in the anoxic tank, it automatically flows into the aerobic zone for degrading organic matter and nitrification, and the liquid level difference in a plurality of stepped weir flow grooves is used to realize the automatic flow and uniform distribution function of water flow. Finally, it flows into the filtration zone to remove suspended solids and fine particles, further purifying the water quality, realizing the biochemical treatment function of domestic sewage. The device can operate automatically without external power, with low maintenance and operation costs, and has a compact structure, small floor area, and low implementation difficulty. Description of the Drawings

[0010] Figure 1 It is a three-dimensional schematic diagram of the present utility model.

[0011] Figure 2It is a three-dimensional schematic diagram of the internal structure of the present utility model.

[0012] Figure 3 It is a sectional three-dimensional schematic diagram of the present utility model.

[0013] Figure 4 It is a sectional plan schematic diagram of the present utility model.

[0014] Figure 5 It is an axonometric drawing of the present utility model. Specific embodiments

[0015] In order to make the purpose, technical solutions and beneficial effects of the present utility model clearer, the preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings for the convenience of those skilled in the art to understand.

[0016] The present utility model discloses a non-powered domestic sewage treatment device. The non-powered domestic sewage treatment device mainly includes a biological treatment tank 2, a first partition board 3, an inclined plate 4, an anaerobic zone 5, an anoxic zone 6, an aerobic zone 7, a first baffle 8, a second baffle 9, a third baffle 10, a second partition board 11, and a third partition board 12. The biological treatment tank 2 is divided into a biological reaction zone 201 and a filtration zone 202 by the first partition board 3. The biological reaction zone 201 is divided into an upper part and a lower part by the inclined plate 4. The upper part is the aerobic zone 7, and the lower part is divided into an anaerobic zone 5 and an anoxic zone 6 by the second partition board 11. An inlet 203 communicating with the anaerobic zone 5 is provided on the side wall of the biological treatment tank 2. A through hole 1101 for sewage flow is provided on the second partition board 11. The first baffle 8, the second baffle 9, and the third baffle 10 are arranged at equal intervals in the anaerobic zone 5. Through grooves 801 for sewage flow are provided at the tops of the first baffle 8 and the third baffle 10 and at the bottom of the second baffle 9. An outlet hole 401 communicating with the aerobic zone 7 is provided at the top of the inclined plate 4. The outlet hole 401 is located at the top of the anoxic zone 6. A plurality of first vertical plates 402 are arranged at equal intervals on the upper surface of the inclined plate 4. The inclined plate 4 is divided into a plurality of weir flow grooves 403 by the plurality of first vertical plates 402. Polyurethane fillers are filled in the weir flow grooves 403. Weir plates 404 are provided at the tops of the vertical plates 402; the filtration zone 202 is divided into two filtration tanks 2021 and a buffer tank 2022 for extending the sewage residence time by two horizontally arranged third partition boards 12. Polyurethane fillers are filled in the filtration tanks 2021. A drain port 204 communicating with the buffer tank 2022 is provided on the outer wall of the biological treatment tank 2.

[0017] The sewage treatment device is set in a low-lying area. After domestic sewage is collected through a collecting pipe network and preliminarily filtered for impurities, it is conveyed to the biological treatment tank 2 for biochemical treatment. The whole process does not rely on pumps or other lifting equipment, but relies on gravity to make the sewage flow. Under the action of gravity, domestic sewage enters the anaerobic zone 5 through the water inlet 203 and flows in a multi-layered zigzag manner, which can promote the full mixing of sludge and the sewage entering the anaerobic zone 5, enabling the organic matter to come into full contact with anaerobic microorganisms, accelerating the decomposition of organic matter. At the same time, the residence time of the sewage in the anaerobic zone 5 can be better controlled, which is beneficial to the growth and metabolic activities of anaerobic microorganisms, thereby improving the removal efficiency of organic matter. The sewage in the anaerobic zone 5 flows into the anoxic zone 6 through the through-hole 1101 on the second partition plate 11 for biological denitrification, so as to reduce the nitrogen content in the sewage. The sewage after denitrification treatment flows through the water outlet hole 401 on the inclined plate 4 to the multiple stepped weir troughs 403 arranged in the aerobic zone 7, which can enhance the turbulence of the water flow and increase the transfer of dissolved oxygen, thereby improving the metabolic activity of aerobic microorganisms. The polyurethane filler filled in the weir trough 403 can provide a stable biological film growth environment, which helps to improve the removal efficiency of organic matter and suspended solids. At the same time, the liquid level difference in the multiple stepped weir troughs 403 is used to realize the automatic flow and uniform distribution functions of the water flow, without relying on auxiliary equipment such as pumps, reducing energy consumption. Then, the sewage automatically flows into the filtration tank 2021 under the action of gravity, and the fine suspended solids are adsorbed and removed through the polyurethane filler filled in the filtration tank 2021, improving the effluent quality. Arranging multiple filtration tanks 2021 can extend the residence time of the sewage, ensure the sewage treatment effect, and the buffer tank 2022 can stabilize the water quality, so that the water quality is further adjusted and purified before discharge, meeting the water pollutant discharge standards of domestic sewage treatment facilities. The utility model can operate automatically, without external power, with low maintenance and operation costs, and has a compact structure, small floor area and low implementation difficulty.

[0018] The anoxic zone 6 and the aerobic zone 7 are both equipped with air distribution pipes 13, and a plurality of aeration heads 14 are arranged at equal intervals on the air distribution pipes 13; the air inlet end of the air distribution pipe 13 is communicated with the air outlet of the fan, and the fan is powered by a solar panel. A gas flow regulating valve is arranged on the air distribution pipe 13, which can independently control the amount of oxygen supplied to the aerobic zone 7 and the anoxic zone 6, providing sufficient oxygen for the aerobic zone 7 for degrading organic matter and nitrification. Appropriate aeration of the anoxic zone 6 can stimulate the activity of denitrifying bacteria and improve the nitrogen removal efficiency.

[0019] On both sides of the top of the biological treatment tank 2, movable doors 205 are provided for facilitating the inspection of the internal situation.

[0020] Working process:

[0021] The sewage treatment device is installed in a low-lying area. After domestic sewage is collected through a collecting pipe network and preliminarily filtered for impurities, it is transported to the biological treatment tank 2 for biochemical treatment. The whole process does not rely on pumps or other lifting equipment, but relies on gravity to make the sewage flow. Under the action of gravity, domestic sewage enters the anaerobic zone 5 through the water inlet 203 and flows in a multi-layered folded manner, which can promote the full mixing of sludge and the sewage entering the anaerobic zone 5, enabling the full contact of organic matter with anaerobic microorganisms, accelerating the decomposition of organic matter. At the same time, the residence time of sewage in the anaerobic zone 5 can be better controlled, which is beneficial to the growth and metabolic activities of anaerobic microorganisms, thereby improving the removal efficiency of organic matter. The sewage in the anaerobic zone 5 flows into the anoxic zone 6 through the through-hole 1101 on the second partition plate 11 for biological denitrification, thereby reducing the nitrogen content in the sewage. The sewage after denitrification treatment flows through the water outlet hole 401 on the inclined plate 4 to the multiple stepped weir troughs 403 arranged in the aerobic zone 7, which can enhance the turbulence of the water flow and increase the transfer of dissolved oxygen, thereby improving the metabolic activity of aerobic microorganisms. The polyurethane filler filled in the weir trough 403 can provide a stable biological film growth environment, which helps to improve the removal efficiency of organic matter and suspended solids. At the same time, the liquid level difference in the multiple stepped weir troughs 403 is used to realize the automatic flow and uniform distribution functions of the water flow, without relying on auxiliary equipment such as pumps, reducing energy consumption. The anoxic zone 6 and the aerobic zone 7 are provided with air distribution pipes 13 and aeration heads 14, which can provide sufficient oxygen for the aerobic zone 7 for degrading organic matter and nitrification. Appropriate aeration of the anoxic zone 6 can stimulate the activity of denitrifying bacteria and improve the nitrogen removal efficiency. Then, the sewage automatically flows into the filter tank 2021 under the action of gravity, adsorbing and removing fine suspended solids through the polyurethane filler filled in the filter tank 2021, improving the effluent quality. Arranging multiple filter tanks 2021 can extend the residence time of sewage, ensure the sewage treatment effect, and the buffer tank 2022 can stabilize the water quality, enabling the water quality to be further adjusted and purified before discharge, meeting the water pollutant discharge standards of domestic sewage treatment facilities. The utility model can operate automatically, without external power, with low maintenance and operation costs, and has a compact structure, small floor area, and low implementation difficulty.

[0022] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not restrictive. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A non-powered domestic sewage treatment device, characterized in that: The unpowered domestic sewage treatment device comprises a biological treatment tank (2), a first baffle (3), an inclined plate (4), an anaerobic zone (5), an anoxic zone (6), an aerobic zone (7), a first baffle (8), a second baffle (9), a third baffle (10), a second baffle (11), and a third baffle (12). The biological treatment tank (2) is divided into a biological reaction zone (201) and a filtration zone (202) by the first baffle (3). The biological reaction zone (201) and the filtration zone (202) are 1) The biological treatment tank (2) is divided into an upper part and a lower part by an inclined plate (4), wherein the upper part is an aerobic zone (7), and the lower part is divided into an anaerobic zone (5) and an anoxic zone (6) by a second partition plate (11), wherein a water inlet (203) connected to the anaerobic zone (5) is provided on a side wall of the biological treatment tank (2), a through hole (1101) for sewage circulation is provided on the second partition plate (11), and a first baffle plate (8), a second baffle plate (9) and a third baffle plate (1101) are arranged at equal intervals in the anaerobic zone (5). The plate (10) is provided with a through groove (801) for sewage circulation at the top of the first baffle plate (8), the third baffle plate (10) and the bottom of the second baffle plate (9); a water outlet hole (401) communicating with the aerobic zone (7) is provided at the top of the inclined plate (4); the water outlet hole (401) is located at the top of the anoxic zone (6); a plurality of first vertical plates (402) are arranged at equal intervals on the upper surface of the inclined plate (4); and a plurality of weir troughs (403) are formed on the inclined plate (4) by dividing the plurality of first vertical plates (402). ), the weir flow trough (403) is filled with polyurethane fillers, and the top of the vertical plate (402) is provided with a weir flow plate (404); the filtration area (202) is divided into two filtration tanks (2021) and a buffer tank (222) for extending the retention time of sewage by two transversely arranged third partitions (12), the filtration tank (221) is filled with polyurethane fillers, and a drainage port (204) connected to the buffer tank (222) is opened on the outer wall of the biological treatment tank (2).

2. The unpowered domestic sewage treatment device according to claim 1, characterized in that: The anoxic zone (6) and the aerobic zone (7) are both equipped with an air distribution pipe (13), and a plurality of aeration heads (14) are arranged at equal intervals on the air distribution pipe (13).

3. A non-powered domestic sewage treatment device as claimed in claim 1 or 2, characterized in that: The biological treatment pool (2) is provided with movable doors (205) on both sides of the top for easy inspection of the internal conditions thereof.

Images