CN215712415U - Sewage secondary treatment device - Google Patents
Sewage secondary treatment device Download PDFInfo
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- CN215712415U CN215712415U CN202022022972.4U CN202022022972U CN215712415U CN 215712415 U CN215712415 U CN 215712415U CN 202022022972 U CN202022022972 U CN 202022022972U CN 215712415 U CN215712415 U CN 215712415U
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Abstract
The utility model discloses a sewage secondary treatment device, which comprises a pool body, wherein a sealing plate is transversely arranged on the pool body to divide the pool body into an upper part and a lower part; the anaerobic biological filter is characterized by also comprising a facultative tank, an anaerobic tank, an MBBR reaction tank, a sedimentation tank and an aeration biological filter, wherein the sealing plate is provided with a water through hole for water to flow through in the region of the MBBR reaction tank, and the water through hole for water to flow through is arranged in the region of the aeration biological filter. The utility model achieves the effect of purifying sewage by matching the MBBR reaction tank, the sedimentation tank and the biological aerated filter, does not need large-area sedimentation facilities such as a secondary sedimentation tank and the like, greatly reduces the occupied area, has simple structure, high integration level and practical device, is beneficial to more practically using a garden sewage treatment device, is more practical and is suitable for wide popularization and use.
Description
Technical Field
The utility model relates to the technical field of sewage treatment, in particular to a sewage secondary treatment device.
Background
In the garden design process, sewage treatment is a very important project. On one hand, a landscape pool, a restaurant, a toilet and the like in the garden generate some domestic wastewater every day, and the wastewater is directly discharged to pollute the environment and also increase the burden on a drainage system of the garden; on the other hand, can produce a large amount of sewage in the gardens under sleet weather, this kind of rainy day sewage if direct discharge often can run off a large amount of water resources, then need irrigate the plant with the running water in the gardens under the arid condition to a large amount of city domestic water have been wasted. Generally, the garden wastewater treatment is divided into two stages, the precipitation treatment is a first-stage treatment, and the biological treatment is a second-stage treatment.
At present, the process of the secondary treatment device for sewage treatment in China is based on an activated sludge process, sewage enters an aeration tank after being subjected to pretreatment links such as a primary sedimentation tank, and the sewage and activated sludge are fully mixed and contacted under the action of oxygen supply stirring of aeration equipment to form mixed liquid. Under aerobic conditions, organic pollutants in the sewage are decomposed by activated sludge microorganisms to be stabilized; and the mixed liquid is subjected to gravity precipitation and sludge-water separation in a secondary sedimentation tank, and the effluent of the secondary sedimentation tank reaches the corresponding discharge standard and is discharged into the environment. And part of the secondary sedimentation tanks of the process are replaced by artificial wetlands or biological filters, and the defects of large occupied area, high investment cost and unstable denitrification and dephosphorization effects exist.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problems of the prior art, provides a secondary sewage treatment device, solves the problems of large volume, high cost and poor denitrification and dephosphorization effects of the conventional secondary sewage treatment device, and improves the sewage treatment effect.
The technical scheme of the utility model is realized as follows:
the utility model provides a sewage secondary treatment device, comprising:
the device comprises a tank body, a water inlet and a water outlet, wherein the tank body is provided with the water inlet and the water outlet; the tank body is transversely provided with a sealing plate which divides the tank body into an upper part and a lower part;
the sedimentation tank is arranged at the lower part of the tank body; a sludge suction pipe for discharging sludge is arranged at the bottom of the sedimentation tank;
the facultative tank is arranged adjacent to the water inlet and is connected with the water inlet;
the facultative tank and the anaerobic tank are arranged adjacently, and the facultative tank and the anaerobic tank are arranged at the upper part of the tank body; the facultative tank is separated from the anaerobic tank by a first partition plate with holes; an aeration plate is arranged in the anaerobic tank, and aeration holes are distributed on the aeration plate in an array manner;
the MBBR reaction tank is arranged at the upper part of the tank body, and the anaerobic tank is separated from the MBBR reaction tank through a second partition plate with an air hole; a plurality of MBBR fillers are filled in the MBBR reaction tank;
the MBBR reaction tank is adjacently connected with the biological aerated filter, and is separated from the biological aerated filter by a third partition plate with air holes; the biological aerated filter is arranged at a position close to the water outlet and is connected with the water outlet;
wherein the sealing plate is provided with a water through hole for water to flow through in the region of the MBBR reaction tank, and the water through hole for water to flow through is arranged in the region of the biological aerated filter;
wherein the sewage flows in from the water inlet, passes through the facultative tank, the anaerobic tank, the MBBR reaction tank, the sedimentation tank and the biological aerated filter, and finally flows out from the water outlet.
Further, the water outlet is arranged at the top of the side wall of the tank body.
Further, the suction pipe is sucked out through the electric valve.
Further, the MBBR reaction tank and the biological aerated filter are provided with aeration pipes, and the aeration pipes extend to the outside of the tank body.
Further, the second baffle with the third baffle all is provided with MBBR filler filtration barrier.
By adopting the technical scheme, the secondary sewage treatment device provided by the utility model has the beneficial effects that: sewage flows into an MBBR reaction tank after being pretreated by a facultative tank and an anaerobic tank, and is continuously fed into the MBBR reaction tank through an aerator pipe, microorganisms absorb and decompose organic matters under the aerobic aeration condition, ammonia nitrogen performs nitration reaction under the action of nitrobacteria, most of the organic matters and nitrogen are decomposed, and water quality is purified; sewage flows into a sedimentation tank through a first gap of a sealing plate, the sedimentation tank is an anoxic zone, denitrification reaction is carried out on the sewage under the anoxic condition, nitrate nitrogen is converted into nitrogen, the total nitrogen content in the sewage is reduced, the sewage is further evolved, and simultaneously sludge in the sewage is precipitated to the bottom of the sedimentation tank in the sedimentation tank; finally, the sewage is spread to the biological aerated filter through the second gap and further purified through the biological aerated filter, so that the effect of purifying the sewage is achieved, large-area sedimentation facilities such as a secondary sedimentation tank and the like do not need to be arranged, and the occupied area is greatly reduced. The utility model has simple structure, high integration level and practical device, is beneficial to more practical use of the garden sewage treatment device, is more practical and is suitable for wide popularization and use.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic plan view of an embodiment of the present invention.
In the figure, 10-a tank body, 11-a water inlet, 12-a water outlet, 14-a sealing plate, 20-a sedimentation tank, 21-a sludge suction pipe, 30-a facultative tank, 31-a first partition plate, 40-an anaerobic tank, 41-a second partition plate, 42-an aeration plate, 50-an MBBR reaction tank, 51-a third partition plate, 60-an aeration biological filter tank and 70-an aeration 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.
Fig. 1 is a schematic plan view of an embodiment of the present invention. As shown in fig. 1, in an embodiment of the present invention, a secondary sewage treatment apparatus includes:
the pool body 10 is provided with a water inlet 11 and a water outlet 12; a sealing plate 14 is transversely arranged on the tank body 10 to divide the tank body 10 into an upper part and a lower part;
the sedimentation tank 20, the sedimentation tank 20 is arranged at the lower part of the tank body 10; the bottom of the sedimentation tank 20 is provided with a sludge suction pipe 21 for sewage discharge;
the facultative tank 30, the facultative tank 30 is set up adjacent to water inlet 11, the facultative tank 30 is connected with water inlet 11;
the anaerobic tank 40, the facultative tank 30 and the anaerobic tank 40 are arranged adjacently, and the facultative tank 30 and the anaerobic tank 40 are arranged at the upper part of the tank body 10; the facultative tank 30 is separated from the anaerobic tank 40 by a first clapboard 31 with holes; an aeration plate 42 is arranged in the anaerobic tank 40, and aeration holes are distributed on the aeration plate 42 in an array manner; the anaerobic tank 40 and the facultative tank 30 are for the purpose of pretreating the sewage.
The MBBR reaction tank 50 is arranged at the upper part of the tank body 10, and the anaerobic tank 40 is separated from the MBBR reaction tank 50 through a second partition plate 41 with an air hole; a plurality of MBBR fillers are filled in the MBBR reaction tank 50; in this embodiment, the MBBR filler is a suspended carrier, and the density of the MBBR filler is close to that of water, so that the MBBR filler can be suspended in sewage. The MBBR reaction tank 50 can enhance the treatment effect and the impact load resistance of the system, increase the treatment load, increase the tolerance of the system to low temperature and low substrate, and reduce the sludge yield by using MBBR fillers suspended in sewage.
The MBBR reaction tank 50 is adjacently connected with the biological aerated filter 60, and the MBBR reaction tank 50 is separated from the biological aerated filter 60 by a third partition plate 51 with air holes; the biological aerated filter 60 is arranged at a position close to the water outlet 12 and is connected with the water outlet 12; the aeration biological filter 60 can control aeration quantity to operate in an aerobic state or an anoxic state according to the actual water quality index condition, wherein the aerobic state mainly removes organic matters and ammonia nitrogen, the anoxic state mainly removes total nitrogen, and the biological filter also has the functions of filtering and purifying water quality.
Wherein, the sealing plate 14 is provided with a water through hole for water to flow through in the region of the MBBR reaction tank 50, and is provided with a water through hole for water to flow through in the region of the biological aerated filter 60; the sealing plate 14 ensures the anoxic property of the bottom of the settling tank 20 so that the sewage can react in the settling tank 20.
Wherein, the sewage flows in from the water inlet 11, passes through the facultative tank 30, the anaerobic tank 40, the MBBR reaction tank 50, the sedimentation tank 20 and the biological aerated filter 60, and finally flows out from the water outlet 12.
Specifically, the water outlet 12 is disposed at the top of the side wall of the tank body 10, so that the sewage in the tank body 10 can be ensured to flow out after sufficient reaction, and the sewage treatment effect is ensured.
Specifically, the suction pipe 21 sucks out sludge through the electric valve, so that the effect of automatically removing bottom sludge in the sedimentation tank 20 can be achieved, and the operation is more convenient and quicker.
Specifically, the MBBR reaction tank 50 and the biological aerated filter 60 are provided with aeration pipes 70, the aeration pipes 70 extend to the outside of the tank body 10, and holes for aeration can be uniformly arranged on the aeration pipes 70. In MBBR reaction tank 50, MBBR reaction tank 50 intussuseption is filled with a plurality of MBBR fillers, simultaneously through aeration pipe 70 to the aeration of MBBR reaction tank 50, make the water in the MBBR reaction tank 50 be the complete mixing state, the environment of microorganism growth is gas, liquid, solid three-phase, the collision and the shearing action of carrier in aqueous, make the air bubble more tiny, the utilization ratio of oxygen has been increased, in addition, every carrier all has different biological species inside and outside, some anaerobes of inside growth or facultative aerobe, the outside is for well fostering all, every carrier all is a microreactor like this, make nitration and denitrification exist simultaneously, thereby treatment effect has been improved.
Specifically, the second partition plate 41 and the third partition plate 51 are both provided with an MBBR filler filtering barrier, which prevents MBBR filler from leaking through the second partition plate 41 and the third partition plate 51, thereby causing insufficient concentration of the MBBR filler in the MBBR reaction tank 50 and causing insufficient reaction in the MBBR reaction tank 50.
The principle is as follows: MBBR (Moving Bed Bio-film Recator) is a Moving Bed biofilm aeration tank. The core part is that suspended filler with the density close to water is added into an aeration tank to be used as a microorganism active carrier, the microorganism active carrier is in a fluidized state under the actions of aeration in the aeration tank and lifting of water flow, and when microorganisms are attached to the carrier, the floating carrier freely moves in the aeration tank along with the convolution and turning action of mixed liquid, so that the aim of sewage treatment is fulfilled.
Understandably, a sewage secondary treatment device comprises a sewage pretreatment device, wherein sewage flows into an MBBR reaction tank 50 after being pretreated by a facultative tank 30 and an anaerobic tank 40, and continuously flows to the MBBR reaction tank 50 through an aeration pipe 70, microorganisms absorb and decompose organic matters under the aerobic aeration condition, ammonia nitrogen performs nitration reaction under the action of nitrobacteria, most of the organic matters and nitrogen are decomposed, and the water quality is purified; sewage flows into the sedimentation tank 20 through the first gap of the sealing plate 14, the sedimentation tank 20 is an anoxic zone, denitrification reaction is carried out on the sewage under the anoxic condition, nitrate nitrogen is converted into nitrogen, the total nitrogen content in the sewage is reduced, the sewage is further evolved, and simultaneously sludge in the sewage is precipitated to the bottom of the sedimentation tank 20 in the sedimentation tank 20; finally, the sewage is spread to the biological aerated filter 60 through the second gap and further purified through the biological aerated filter 60, so that the effect of purifying the sewage is achieved, large-area sedimentation facilities such as a secondary sedimentation tank and the like are not needed, and the occupied area is greatly reduced. The utility model has simple structure, high integration level and practical device, is beneficial to more practical use of the garden sewage treatment device, is more practical and is suitable for wide popularization and use.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. A sewage secondary treatment device is characterized by comprising:
the device comprises a tank body, a water inlet and a water outlet, wherein the tank body is provided with the water inlet and the water outlet; the tank body is transversely provided with a sealing plate which divides the tank body into an upper part and a lower part;
the sedimentation tank is arranged at the lower part of the tank body; a sludge suction pipe for discharging sludge is arranged at the bottom of the sedimentation tank;
the facultative tank is arranged adjacent to the water inlet and is connected with the water inlet;
the facultative tank and the anaerobic tank are arranged adjacently, and the facultative tank and the anaerobic tank are arranged at the upper part of the tank body; the facultative tank is separated from the anaerobic tank by a first partition plate with holes; an aeration plate is arranged in the anaerobic tank, and aeration holes are distributed on the aeration plate in an array manner;
the MBBR reaction tank is arranged at the upper part of the tank body, and the anaerobic tank is separated from the MBBR reaction tank through a second partition plate with an air hole; a plurality of MBBR fillers are filled in the MBBR reaction tank;
the MBBR reaction tank is adjacently connected with the biological aerated filter, and is separated from the biological aerated filter by a third partition plate with air holes; the biological aerated filter is arranged at a position close to the water outlet and is connected with the water outlet;
wherein the sealing plate is provided with a water through hole for water to flow through in the region of the MBBR reaction tank, and the water through hole for water to flow through is arranged in the region of the biological aerated filter;
wherein the sewage flows in from the water inlet, passes through the facultative tank, the anaerobic tank, the MBBR reaction tank, the sedimentation tank and the biological aerated filter, and finally flows out from the water outlet.
2. The secondary sewage treatment apparatus according to claim 1, wherein: the water outlet is arranged at the top of the side wall of the tank body.
3. The secondary sewage treatment apparatus according to claim 1, wherein: the suction pipe is sucked out through the electric valve.
4. The secondary sewage treatment apparatus according to claim 1, wherein: the MBBR reaction tank and the biological aerated filter are provided with aeration pipes, and the aeration pipes extend to the outside of the tank body.
5. The secondary sewage treatment apparatus according to claim 1, wherein: the second baffle with the third baffle all is provided with MBBR filler and filters separation piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022022972.4U CN215712415U (en) | 2020-09-15 | 2020-09-15 | Sewage secondary treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022022972.4U CN215712415U (en) | 2020-09-15 | 2020-09-15 | Sewage secondary treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215712415U true CN215712415U (en) | 2022-02-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022022972.4U Active CN215712415U (en) | 2020-09-15 | 2020-09-15 | Sewage secondary treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215712415U (en) |
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2020
- 2020-09-15 CN CN202022022972.4U patent/CN215712415U/en active Active
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