CN114853279A

CN114853279A - Rural domestic sewage treatment device

Info

Publication number: CN114853279A
Application number: CN202210527610.1A
Authority: CN
Inventors: 陈带军; 高泰培; 吴强; 张常春; 袁开禹; 李新; 孙华秀; 邱慧
Original assignee: Suzhou Huazhijie Environmental Safety Technology Co ltd
Current assignee: Suzhou Huazhijie Environmental Safety Technology Co ltd
Priority date: 2022-05-16
Filing date: 2022-05-16
Publication date: 2022-08-05

Abstract

The invention provides a rural domestic sewage treatment device, and relates to the technical field of sewage treatment. This rural domestic sewage treatment plant, including the box and set up intake antrum, anaerobism chamber, good oxygen chamber and the sedimentation chamber inside the box, intake antrum, anaerobism chamber, good oxygen chamber and sedimentation chamber set gradually in the inside of box from a left side to the right side, be provided with first baffle between intake antrum and the anaerobism chamber, the anaerobism chamber is provided with the second baffle with good oxygen chamber, be provided with the third baffle between good oxygen chamber and the sedimentation chamber, the inside of first baffle and the position that is close to the top are provided with first through-hole, the inside of second baffle and the position that is located the bottom are provided with the second through-hole. Multiple functions such as oxygenation, mixing, circulation and the like can be completed by using one aeration device, the failure probability of the device is reduced, the technical difficulty and requirements of maintenance are reduced, the energy consumption is reduced, and unattended operation can be realized.

Description

Rural domestic sewage treatment device

Technical Field

The invention relates to the technical field of sewage treatment, in particular to a rural domestic sewage treatment device.

Background

People inevitably discharge domestic sewage such as water for toilets, water for washing clothes, water for bathing, etc. in daily life. With the improvement of living standard, the water consumption of people in daily life is greatly increased, and if the domestic sewage is directly discharged without being treated, the domestic sewage pollutes the water quality, so that red algae, aquatic organisms and plants in lakes and inshore waters are reduced, the environment is polluted, and the ecological balance is damaged, therefore, when the sewage is discharged, a sewage treatment device is required to treat the sewage.

When the existing sewage treatment device is used for treating sewage, although the treatment efficiency is high, a plurality of aeration devices are needed, the energy consumption is high, the equipment maintenance is troublesome, filtered sludge needs to be discharged at intervals, and the discharged sludge still contains partial pollutants and cannot be removed.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a rural domestic sewage treatment device, which solves the problems that when the existing sewage treatment device is used for treating sewage, the treatment efficiency is high, a plurality of aeration devices are required, the energy consumption is high, the device maintenance is troublesome, the filtered sludge needs to be discharged at intervals, and part of pollutants in the discharged sludge can not be removed.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a rural domestic sewage treatment device, which comprises a box body, and a water inlet cavity, an anaerobic cavity, an aerobic cavity and a sedimentation cavity which are arranged inside the box body, the water inlet cavity, the anaerobic cavity, the aerobic cavity and the sedimentation cavity are sequentially arranged in the box body from left to right, a first clapboard is arranged between the water inlet cavity and the anaerobic cavity, a second clapboard is arranged between the anaerobic cavity and the aerobic cavity, a third partition board is arranged between the aerobic cavity and the sedimentation cavity, a first through hole is arranged in the first partition board and close to the top, a second through hole is arranged at the position inside the second partition plate and at the bottom, a third through hole is arranged at the position inside the third partition plate and close to the top, the top of the anaerobic cavity is fixedly connected with a first guide plate, the bottom of the anaerobic cavity is fixedly connected with a second guide plate, and the top of the sedimentation cavity is fixedly connected with a third guide plate;

an aeration disc is arranged at the bottom of the aerobic cavity, a gas pipe is arranged at the bottom of the aeration disc, one end, away from the aeration disc, of the gas pipe is connected with external aeration equipment, a first motor and a second motor are fixedly connected to the top of the box body, an output shaft of the first motor is fixedly connected with a first stirring shaft, the first stirring shaft is located inside the anaerobic cavity, an output shaft of the second motor is fixedly connected with a second stirring shaft, and the second stirring shaft is located inside the aerobic cavity;

the top in good oxygen chamber is provided with gas collecting pipe, gas collecting pipe keeps away from the one end fixedly connected with air-lift back flow in good oxygen chamber, the bottom fixedly connected with mud back flow of air-lift back flow to the one end that the air-lift back flow was kept away from to the mud back flow links to each other with the bottom of intake antrum, the inside of air-lift back flow is provided with the check valve, be provided with the connecting pipe on the inner wall in sedimentation chamber to the one end that the sedimentation chamber was kept away from to the connecting pipe links to each other with the air-lift back flow, and the connecting pipe is located the below of check valve, be provided with reverse osmosis membrane between the inner wall in sedimentation chamber and the third guide plate to reverse osmosis membrane is located the top of connecting pipe.

Preferably, the bottom of the sedimentation cavity is funnel-shaped, a drain pipe is arranged at the bottom of the sedimentation cavity, and a valve is arranged inside the drain pipe.

Preferably, be provided with the inlet tube on the inner wall of intake antrum to the inlet tube is located the bottom of intake antrum, be provided with the outlet pipe on the inner wall of sedimentation chamber, and the outlet pipe is located the top of sedimentation chamber.

Preferably, the top of the aerobic cavity is provided with a concave groove, and the gas collecting pipe is positioned inside the concave groove.

Preferably, a plurality of stirring blades are arranged on the first stirring shaft and the second stirring shaft, and the first stirring shaft is positioned between the first guide plate and the second guide plate.

(III) advantageous effects

The invention provides a rural domestic sewage treatment device. The method has the following beneficial effects:

1. according to the invention, multiple functions of oxygenation, mixing, circulation and the like can be completed by using one aeration device, the failure probability of the device is reduced, the technical difficulty and requirements of maintenance are reduced, the energy consumption is reduced, and unattended operation can be realized.

2. According to the invention, the first motor, the second motor, the first stirring shaft and the second stirring shaft are arranged, so that the treatment efficiency of the anaerobic cavity and the aerobic cavity can be improved.

3. According to the invention, the gas-lift backflow pipe, the gas collecting pipe, the sludge backflow pipe and the connecting pipe are arranged, the sludge-water mixed liquid in the sedimentation cavity is conveyed into the gas-lift backflow pipe under the action of the connecting pipe, the gas collecting pipe collects the residual tail gas after aeration, and the sludge-water mixed liquid in the gas-lift backflow pipe is pushed into the water inlet cavity by the aeration tail gas for secondary treatment, so that pollutants in the sludge can be conveniently cleaned.

4. According to the invention, the reverse osmosis membrane is arranged to prevent sludge in the sedimentation cavity from being discharged from the water outlet pipe, and the one-way valve is arranged to prevent sludge-water mixed liquid from entering the aerobic cavity through the gas collecting pipe.

Drawings

FIG. 1 is a schematic view of the internal structure of a rural domestic sewage treatment plant according to the present invention.

Wherein, 1, a box body; 2. a water inlet cavity; 3. an anaerobic chamber; 4. an aerobic cavity; 5. a sedimentation chamber; 6. a gas lift return pipe; 7. a first separator; 8. a second separator; 9. a third partition plate; 10. a first through hole; 11. a second through hole; 12. a third through hole; 13. a first baffle; 14. a second baffle; 15. a third baffle; 16. a first motor; 17. a first stirring shaft; 18. a second motor; 19. a second stirring shaft; 20. a gas collection tube; 21. a sludge return pipe; 22. an aeration disc; 23. a gas delivery pipe; 24. a water inlet pipe; 25. a blow-off pipe; 26. a connecting pipe; 27. a reverse osmosis membrane; 28. a one-way valve; 29. and (4) a water outlet pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b):

as shown in fig. 1, the embodiment of the invention provides a rural domestic sewage treatment device, which comprises a box body 1, and a water inlet cavity 2, an anaerobic cavity 3, an aerobic cavity 4 and a sedimentation cavity 5 which are arranged inside the box body 1, wherein the bottom of the sedimentation cavity 5 is funnel-shaped, so that sludge can be conveniently discharged, the bottom of the sedimentation cavity 5 is provided with a sewage discharge pipe 25, the inside of the sewage discharge pipe 25 is provided with a valve, the inner wall of the water inlet cavity 2 is provided with a water inlet pipe 24, the water inlet pipe 24 is positioned at the bottom of the water inlet cavity 2, domestic sewage is added into the water inlet cavity 2 through the water inlet pipe 24, the inner wall of the sedimentation cavity 5 is provided with a water outlet pipe 29, the water outlet pipe 29 is positioned at the top of the sedimentation cavity 5, the water inlet cavity 2, the anaerobic cavity 3, the aerobic cavity 4 and the sedimentation cavity 5 are sequentially arranged inside the box body 1 from left to right, a first partition plate 7 is arranged between the water inlet cavity 2 and the anaerobic cavity 3, the anaerobic cavity 3 and the aerobic cavity 4 are provided with a second partition plate 8, a third partition plate 9 is arranged between the aerobic chamber 4 and the sedimentation chamber 5, a first through hole 10 is arranged in the first partition plate 7 and close to the top, a second through hole 11 is arranged in the second partition plate 8 and close to the bottom, a third through hole 12 is arranged in the third partition plate 9 and close to the top, a first guide plate 13 is fixedly connected to the top of the anaerobic chamber 3, a second guide plate 14 is fixedly connected to the bottom of the anaerobic chamber 3, and a third guide plate 15 is fixedly connected to the top of the sedimentation chamber 5, so that the flowing time of sewage in the box body 1 is longer by arranging the first partition plate 7, the second partition plate 8, the third partition plate 9, the first through hole 10, the second through hole 11, the third through hole 12, the first guide plate 13, the second guide plate 14 and the third guide plate 15;

an aeration disc 22 is arranged at the bottom of the aerobic cavity 4, a gas pipe 23 is arranged at the bottom of the aeration disc 22, one end of the gas pipe 23 far away from the aeration disc 22 is connected with external aeration equipment, a first motor 16 and a second motor 18 are fixedly connected with the top of the box body 1, the first motor 16 is used for controlling the rotation of the first stirring shaft 17 and accelerating the treatment efficiency of the anaerobic cavity 3, the anaerobic cavity 3 mainly has functions of sludge interception and storage, anaerobic hydrolysis and denitrification, the second motor 18 is used for controlling the rotation of the second stirring shaft 19 and accelerating the treatment efficiency of the aerobic cavity 4, the aerobic cavity 4 mainly carries out oxidation and decomposition of organic matters through aerobic microorganisms and oxidizes ammonia nitrogen into nitrite and nitrate, the sedimentation cavity 5 mainly carries out mud-water separation and effluent clarification of mixed liquor, the output shaft of the first motor 16 is fixedly connected with the first stirring shaft 17, and the first stirring shaft 17 is positioned inside the anaerobic cavity 3, a second stirring shaft 19 is fixedly connected to an output shaft of the second motor 18, the second stirring shaft 19 is positioned inside the aerobic cavity 4, a plurality of stirring blades are arranged on the first stirring shaft 17 and the second stirring shaft 19, and the first stirring shaft 17 is positioned between the first guide plate 13 and the second guide plate 14;

the top of the aerobic cavity 4 is provided with a gas collecting pipe 20 for collecting the tail gas for aeration, and conveying the tail gas into the air lift return pipe 6 as the power for returning the muddy water mixed liquid, the top of the aerobic cavity 4 is provided with a concave groove, the gas collecting pipe 20 is positioned in the concave groove, one end of the gas collecting pipe 20 far away from the aerobic cavity 4 is fixedly connected with the air lift return pipe 6, the bottom of the air lift return pipe 6 is fixedly connected with a sludge return pipe 21, one end of the sludge return pipe 21 far away from the air lift return pipe 6 is connected with the bottom of the water inlet cavity 2, the inside of the air lift return pipe 6 is provided with a one-way valve 28 for preventing the muddy water mixed liquid from flowing into the aerobic cavity 4 from the gas collecting pipe 20, the inner wall of the sedimentation cavity 5 is provided with a connecting pipe 26, one end of the connecting pipe 26 far away from the sedimentation cavity 5 is connected with the air lift return pipe 6, and the connecting pipe 26 is positioned below the one-way valve 28, a reverse osmosis membrane 27 is arranged between the inner wall of the sedimentation cavity 5 and the third guide plate 15 to prevent partial sludge from being discharged from the water outlet pipe 29, and the reverse osmosis membrane 27 is positioned above the connecting pipe 26.

The working principle is as follows: when the device is used, firstly, sewage is conveyed into the water inlet cavity 2 through the water inlet pipe 24, when the interior of the water inlet cavity 2 is filled with the sewage, the sewage enters the interior of the anaerobic cavity 3 through the first through hole 10, meanwhile, the first motor 16 and the second motor 18 work simultaneously, and gas is conveyed to the aeration disc 22 through the aeration equipment, when the anaerobic cavity 3 is under the action of the second guide plate 14, the sewage in the anaerobic cavity 3 is filled with the sewage, then the sewage enters the aerobic cavity 4 through the second through hole 11, after the interior of the aerobic cavity 4 is filled with the sewage, the sewage flows into the interior of the sedimentation cavity 5 through the third through hole 12, so that the treated sewage is precipitated in the interior of the sedimentation cavity 5, clear water on the upper layer of the sedimentation cavity 5 passes through the reverse osmosis membrane 27 and then is discharged from the water outlet pipe 29, muddy water on the lower layer enters the interior of the air lift return pipe 6 through the connecting pipe 26, and simultaneously, the tail gas of aeration enters the interior of the air lift return pipe 6 through the gas collecting pipe 20, and the muddy water mixed liquid in the air lift return pipe 6 is pushed into the water inlet cavity 2 from the sludge return pipe 21, so that nitrate nitrogen in the muddy water mixed liquid return water is subjected to denitrification in the anaerobic cavity 3, and simultaneously, residual sludge generated by the aerobic cavity 4 is returned to the anaerobic cavity 3 for digestion.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a rural domestic sewage treatment device, includes box (1) and sets up intake antrum (2), anaerobism chamber (3), good oxygen chamber (4) and sedimentation chamber (5) inside box (1), its characterized in that: the water inlet cavity (2), the anaerobic cavity (3), the aerobic cavity (4) and the sedimentation cavity (5) are sequentially arranged inside the box body (1) from left to right, a first partition plate (7) is arranged between the water inlet cavity (2) and the anaerobic cavity (3), a second partition plate (8) is arranged between the anaerobic cavity (3) and the aerobic cavity (4), a third partition plate (9) is arranged between the aerobic cavity (4) and the sedimentation cavity (5), a first through hole (10) is arranged in the first partition plate (7) and at a position close to the top, a second through hole (11) is arranged in the second partition plate (8) and at a position at the bottom, a third through hole (12) is arranged in the third partition plate (9) and at a position close to the top, a first guide plate (13) is fixedly connected to the top of the anaerobic cavity (3), a second guide plate (14) is fixedly connected to the bottom of the anaerobic cavity (3), the top of the sedimentation cavity (5) is fixedly connected with a third guide plate (15);

an aeration disc (22) is arranged at the bottom of the aerobic cavity (4), an air conveying pipe (23) is arranged at the bottom of the aeration disc (22), one end, far away from the aeration disc (22), of the air conveying pipe (23) is connected with external aeration equipment, a first motor (16) and a second motor (18) are fixedly connected to the top of the box body (1), an output shaft of the first motor (16) is fixedly connected with a first stirring shaft (17), the first stirring shaft (17) is located inside the anaerobic cavity (3), an output shaft of the second motor (18) is fixedly connected with a second stirring shaft (19), and the second stirring shaft (19) is located inside the aerobic cavity (4);

a gas collecting pipe (20) is arranged at the top of the aerobic cavity (4), one end of the gas collecting pipe (20) far away from the aerobic cavity (4) is fixedly connected with a gas lift return pipe (6), the bottom of the air lift return pipe (6) is fixedly connected with a sludge return pipe (21), and one end of the sludge return pipe (21) far away from the air-lift return pipe (6) is connected with the bottom of the water inlet cavity (2), a one-way valve (28) is arranged inside the air lift return pipe (6), a connecting pipe (26) is arranged on the inner wall of the sedimentation cavity (5), and one end of the connecting pipe (26) far away from the sedimentation cavity (5) is connected with the air lift return pipe (6), and the connecting pipe (26) is positioned below the one-way valve (28), a reverse osmosis membrane (27) is arranged between the inner wall of the sedimentation cavity (5) and the third guide plate (15), and the reverse osmosis membrane (27) is positioned above the connecting pipe (26).

2. The rural domestic sewage treatment device according to claim 1, wherein: the bottom of sedimentation chamber (5) is the infundibulate to the bottom of sedimentation chamber (5) is provided with blow off pipe (25), the inside of blow off pipe (25) is provided with the valve.

3. The rural domestic sewage treatment device according to claim 1, wherein: be provided with inlet tube (24) on the inner wall of intake antrum (2) to inlet tube (24) are located the bottom of intake antrum (2), be provided with outlet pipe (29) on the inner wall of precipitation chamber (5) to outlet pipe (29) are located the top of precipitation chamber (5).

4. The rural domestic sewage treatment device according to claim 1, wherein: the top of the aerobic cavity (4) is provided with a concave groove, and the gas collecting pipe (20) is positioned in the concave groove.

5. The rural domestic sewage treatment device according to claim 1, wherein: a plurality of stirring blades are arranged on the first stirring shaft (17) and the second stirring shaft (19), and the first stirring shaft (17) is positioned between the first guide plate (13) and the second guide plate (14).