CN209872686U - Ecological sewage treatment system - Google Patents
Ecological sewage treatment system Download PDFInfo
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- CN209872686U CN209872686U CN201920443477.5U CN201920443477U CN209872686U CN 209872686 U CN209872686 U CN 209872686U CN 201920443477 U CN201920443477 U CN 201920443477U CN 209872686 U CN209872686 U CN 209872686U
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Abstract
The utility model provides an ecological sewage treatment system. The ecological sewage treatment system comprises a pretreatment system, a biochemical treatment tank and a post-treatment tank; a grating area and a sand setting area are sequentially arranged in the pretreatment system, a sludge area and a microorganism treatment area are sequentially arranged from the bottom of the biochemical treatment tank to the top, a comprehensive treatment device is arranged in the microorganism treatment area, and a water inlet pipe is arranged between the sludge area and the microorganism treatment area; the post-treatment tank is arranged at the downstream of the biochemical treatment tank. The utility model provides an ecological sewage treatment system is through setting up pretreatment systems, biochemical treatment pond and aftertreatment pond to set up comprehensive treatment device in biochemical treatment pond, can get rid of pollutants such as COD, ammonia nitrogen, total nitrogen in the sewage effectively. Through the mode of setting sludge zone and anaerobic zone in biological treatment bottom of the pool, can guarantee that whole biochemical treatment district is free from extraneous odour, reduced the secondary pollution to the environment.
Description
Technical Field
The utility model relates to a sewage treatment field especially relates to an ecological sewage treatment system.
Background
The sewage treatment plant treats the sewage collected by the urban sewage pipe network into water quality acceptable for the environment through a series of physical, chemical and biochemical actions, thereby reducing the pollution to the natural environment. At present, nearly five thousand sewage treatment plants built nationwide mainly adopt two sewage treatment methods.
One is to adopt the traditional water treatment process, namely a flaky concrete pool, which not only has poor aesthetic property, but also always gives off unpleasant odor during running. Has negative influence on the surrounding living environment. One is buried, the sewage treatment plant is buried, the land resources are not occupied, the park is built on the ground surface, and the environmental quality is improved.
However, the first sewage treatment method requires the construction of a large reinforced concrete building group, which is not only aesthetically bad, but also often gives off unpleasant odor. Although the second sewage treatment mode solves the problems of beauty and smell, the investment cost is extremely high, the upgrading and the reconstruction are difficult, the operating cost is also very high, and the concept of sustainable development is not met.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model aims at providing an ecological sewage treatment system to solve among the prior art sewage treatment mode to the environmental impact big, the problem that the operation maintenance cost is high.
(II) technical scheme
In order to solve the technical problem, the utility model provides an ecological sewage treatment system. The ecological sewage treatment system comprises a pretreatment system, a biochemical treatment tank and a post-treatment tank; a grating area and a sand setting area are sequentially arranged in the pretreatment system, a sludge area and a microorganism treatment area are sequentially arranged from the bottom of the biochemical treatment tank to the top, a comprehensive treatment device is arranged in the microorganism treatment area, and a water inlet pipe is arranged between the sludge area and the microorganism treatment area; the post-treatment tank is arranged at the downstream of the biochemical treatment tank.
Optionally, the grid section comprises a first grid section and a second grid section, the first grid section and the second grid section being connected upstream and downstream of the grit zone, respectively.
Optionally, the microorganism treatment zone comprises an anaerobic zone, an anoxic zone and an aerobic zone, and the integrated treatment device is arranged in the anoxic zone and the aerobic zone.
Optionally, the biochemical treatment tank further comprises a clear water zone, and the clear water zone is arranged above the aerobic zone.
Optionally, the integrated treatment apparatus includes an aerator in communication with an air intake and disposed within the aerobic zone.
Optionally, the integrated treatment device further comprises a biological carrier and a reflux device, wherein the biological carrier is enclosed around the aerator and the reflux device, and the aerobic zone and the anoxic zone are different in type from each other.
Optionally, the grid spacing of the second grid region is smaller than the grid spacing of the first grid region.
Optionally, an impermeable membrane is laid at the bottom of the biochemical treatment tank.
Optionally, the water inlet pipe has a plurality of water outlets, a plurality of the water outlets facing the microbiological treatment zone.
Optionally, a biological floating island is further arranged on the biochemical treatment tank, and plants are planted on the biological floating island.
(III) advantageous effects
The utility model provides an ecological sewage treatment system is through setting up pretreatment systems, biochemical treatment pond and aftertreatment pond to set up microbiological treatment district and comprehensive treatment device in biochemical treatment pond, can get rid of pollutants such as organic matter, ammonia nitrogen, total nitrogen in the sewage effectively. Through the mode of setting sludge zone and anaerobic zone in biological treatment bottom of the pool, can guarantee that whole biochemical treatment district is free from extraneous odour, reduced the secondary pollution to the environment. Meanwhile, the anaerobic zone, the anoxic zone and the aerobic zone are vertically arranged, so that the ecological sewage treatment system has the advantages of less power equipment and no need of a flow impeller, and the cost of sewage treatment is reduced. In addition, the surface of the biochemical treatment tank is planted with emergent water plants, so that the landscape effect is improved, the water quality purification effect is further realized, and the effect of an ecological sewage plant is really achieved.
Drawings
FIG. 1 is a schematic structural diagram of an ecological sewage treatment system provided by an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an integrated processing device according to an embodiment of the present invention.
The reference numbers illustrate:
1. a pre-treatment system; 11. a sand setting zone; 12. a first grid area; 13. a second grid area; 2. a biochemical treatment tank; 21. a sludge zone; 22. an anaerobic zone; 23. an anoxic zone; 24. an aerobic zone; 25. a clear water zone; 26. an impermeable membrane; 3. a post-treatment tank; 4. a water inlet pipe; 5. a comprehensive processing device; 51. an aerator; 52. a reflux device; 6. an air inlet pipe.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
The embodiment of the utility model provides an ecological sewage treatment system, which comprises a pretreatment system 1, a biochemical treatment tank 2 and a post-treatment tank 3; the pretreatment system 1 is internally provided with a grating area and a sand setting area 11 in sequence, a sludge area 21 and a microorganism treatment area are arranged from the bottom of the biochemical treatment tank 2 upwards in sequence, a comprehensive treatment device 5 is arranged in the microorganism treatment area, a water inlet pipe 4 is arranged between the sludge area 21 and the microorganism treatment area, and a post-treatment tank 3 is arranged at the downstream of the biochemical treatment tank 5.
The utility model provides an ecological sewage treatment system is through setting up pretreatment systems 1, biochemical treatment pond 2 and aftertreatment pond 3 to set up microbiological treatment district and comprehensive treatment device 5 in biochemical treatment pond 2, can get rid of pollutants such as organic matter, ammonia nitrogen, total nitrogen in the sewage effectively. Through the mode of setting up mud district 21 and anaerobic zone 22 in biochemical treatment pond 2 bottom, can guarantee whole biochemical treatment pond 2 free from extraneous odour, reduced the secondary pollution to the environment. Meanwhile, the anaerobic zone 22, the anoxic zone 23 and the aerobic zone 24 are vertically arranged, so that the ecological sewage treatment system has the advantages of less power equipment and no need of a flow impeller, and the cost of sewage treatment is reduced.
Specifically, contaminants in wastewater generally exist in three forms: suspended (including floating), colloidal and dissolved states. The pretreatment system 1 mainly treats suspended matters and part of colloids, so that the pretreatment system 1 performs the function of primary solid-liquid separation on the sewage.
The grating area in the pretreatment system 1 is used for primarily separating pollutants such as garbage, large solid matters and the like in sewage; the sand setting zone 11 in the pretreatment system 1 is used for collecting the sewage filtered by the grid zone and settling the silt in the sewage, and the pretreatment system 1 can be used for carrying out preliminary pretreatment on the sewage to remove a certain amount of pollutants in the sewage.
In the present embodiment, the grating zone comprises a first grating zone 12 and a second grating zone 13, the first grating zone 12 and the second grating zone 13 being connected upstream and downstream of the grit zone 11, respectively; further, the pitch of the bars of the second grating area 13 is smaller than the pitch of the bars of the first grating area 12.
As shown in fig. 1, a first grating area 12, a sand settling area 11 and a second grating area 13 are arranged in the pretreatment system 1 in this order, wherein the first grating area 12 is used for coarse filtration and the second grating area 13 is used for relatively fine filtration, whereby the grating pitch of the second grating area 13 is set to be smaller than the grating pitch of the first grating area 12. For example, the grid pitch of the first grid region 12 can be set to 100-200 mm; the distance between the bars of the second grid area 13 is set to be 30-50 mm. In the present embodiment, the first and second grating regions 12 and 13 may be a planar grating or a curved grating.
The biochemical treatment tank 2 is a core component of the ecological sewage treatment system. In this embodiment, the biochemical treatment tank 2 may be a tank with a depth of about 6-8 m, and the sewage enters the biochemical treatment tank 2 from the bottom of the biochemical treatment tank 2 through the water inlet pipe 4.
A sludge zone 21 and a microorganism treatment zone are provided in this order in the upward direction from the bottom of the biochemical treatment tank 2. Impurities such as sludge settled in the sewage treated in the microorganism treatment zone settle in the sludge zone 21. In order to prevent the influence of the inflow on the settling effect of the sludge zone, the inlet pipe 4 in this embodiment is arranged above the sludge zone 21. That is, the sewage directly flows into the microorganism treatment area from the bottom to the top, and the sewage is treated by the comprehensive treatment device 5 in the microorganism treatment area, and the sewage reaches the standard of discharge or recovery.
In a preferred embodiment, the inlet conduit 4 has a plurality of outlets, which are directed towards the microbiological treatment zone. Through set up a plurality of delivery ports on inlet tube 4, can let in sewage evenly in the microbiological treatment zone.
Specifically, the microorganism treatment zone in this embodiment includes an anaerobic zone 22, an anoxic zone 23, and an aerobic zone 24.
That is, the sewage flows through the anaerobic zone 22, the anoxic zone 23, and the aerobic zone 24 in this order from the bottom to the top. The anaerobic zone 22, the anoxic zone 23 and the aerobic zone 24 are distinguished by the oxygen concentration in the corresponding zones, and no corresponding partition structure is required.
In the anaerobic zone 22, the organic matters in the sewage are decomposed, metabolized and digested by the anaerobic bacteria, so that the content of the organic matters in the sewage is greatly reduced, and methane is generated. Meanwhile, the phosphorus accumulating bacteria can fully release phosphorus in an anaerobic environment, and a good foundation is laid for saturated absorption of phosphorus in an aerobic area.
The sewage enters the anoxic zone 23 after being treated by the anaerobic zone 22. An anoxic environment is created inside the anoxic zone 23, which facilitates the growth of anoxic microorganisms. The anoxic microorganisms can reduce nitrate nitrogen in the sewage to further remove the total nitrogen.
The sewage enters the aerobic zone 24 after being treated by the anoxic zone 23. Under the action of the microorganisms in the aerobic zone 24, the organic matters can be fully degraded and converted. Meanwhile, the ammonia nitrogen is converted into nitrate nitrogen or nitrite nitrogen under the action of nitrobacteria. Microorganisms capable of absorbing phosphate radicals such as phosphorus-accumulating bacteria can be introduced into the aerobic zone 24 so as to fully absorb phosphorus in the sewage.
The clean water zone 25 is positioned at the uppermost part of the biochemical treatment tank 2, and the sewage treated by the aerobic zone 24 flows into the clean water zone 25 to be distinguished from the lower water body.
Biological floating islands and the like can be arranged above the clear water area 25, plants can be planted on the floating islands, so that the absorption of pollutants is further improved, and the root systems of the plants can also play a role in purifying water. Meanwhile, the plants can also play a role in purifying air and beautifying the environment.
By sequentially arranging the anaerobic zone 22, the anoxic zone 23, the aerobic zone 24 and the clear water zone 25 from the bottom to the top of the biochemical treatment tank 2, sewage can be ensured to flow from bottom to top without additional flow impellers and stirrers. Therefore, the cost of sewage treatment can be well reduced through the arrangement mode.
In order to ensure efficient removal of pollutants from the wastewater, integrated treatment units 5 are also provided in the anoxic zone 23 and the aerobic zone 24.
In the present embodiment, the integrated treatment apparatus 5 comprises an aerator 51, a biological carrier and a return 52, the aerator 51 is communicated with the air inlet pipe 6 and is arranged in the aerobic zone 24; the return device 52 is arranged in the middle of the integrated treatment device, and the biological carriers are arranged around the aerator 51 and the return device 52, namely, the biological carriers are uniformly distributed in the whole integrated treatment device.
Referring to fig. 1 and 2, the aerator 51 is disposed in the aerobic zone 24, and the aerator 51 uses a blower to deliver air into the aerobic zone 24 through the air inlet pipe 6 and blow the air out in the form of bubbles to meet the demand of microorganisms in the aerobic zone 24 for oxygen. In this embodiment, the aerator 51 may be a microporous membrane aerator pipe.
The biological carrier is used for providing a carrier for microorganisms in the anoxic zone 23 and the aerobic zone 24, so that the microorganisms can be attached and gathered conveniently, and the biological density is improved to improve the treatment efficiency. Moreover, the types of the biological carriers in the aerobic zone and the anoxic zone are different, so that the bearing requirements of different microorganisms can be met.
The water from the aerobic zone 24 is flushed around into the anoxic zone 23 by the return 52, providing nitrate and nitrite to the anoxic zone 23.
Further, the biochemical treatment tank 2 is actually an ecological treatment tank, in which not only various microorganisms, but also protozoa, metazoans, aquatic plants, etc. form a huge food chain network, providing a complete artificial ecosystem for sewage purification.
In a preferred embodiment, an impermeable membrane 26 is further laid at the bottom of the biochemical treatment tank 2, and the impermeable membrane 26 can be made of polyethylene geomembrane and the like. By arranging the impermeable membrane 26, sewage can be prevented from permeating into underground water, and a large amount of civil engineering is saved.
Example two
The second embodiment of the utility model provides a sewage treatment method, which comprises an ecological sewage treatment system as in the first embodiment;
the sewage treatment method comprises the following steps:
s01, introducing the sewage into the pretreatment system 1, and making the sewage flow into the biochemical treatment tank 2 after passing through the grating area and the sand setting area 11;
s02, degrading the sewage in the microbial treatment area in the biochemical treatment tank 2, and then flowing into the post-treatment tank 3;
and S03, treating the sewage by the post-treatment tank 3, and discharging or recycling the sewage if the sewage reaches the standard.
The embodiment of the utility model provides a sewage treatment method through using the ecological sewage treatment system in the embodiment one, can purify sewage well to sewage treatment's effect has been guaranteed. Meanwhile, the method for treating the sewage has the advantage of low treatment cost.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An ecological sewage treatment system is characterized by comprising a pretreatment system (1), a biochemical treatment tank (2) and a post-treatment tank (3);
a grating area and a sand setting area (11) are sequentially arranged in the pretreatment system (1),
a sludge area (21) and a microorganism treatment area are sequentially arranged from the bottom of the biochemical treatment tank (2) to the top, a comprehensive treatment device (5) is arranged in the microorganism treatment area, and a water inlet pipe (4) is arranged between the sludge area (21) and the microorganism treatment area;
the post-treatment tank (3) is arranged at the downstream of the biochemical treatment tank (2).
2. The ecological sewage treatment system according to claim 1, wherein the grid area comprises a first grid area (12) and a second grid area (13), the first grid area (12) and the second grid area (13) being connected upstream and downstream of the grit zone (11), respectively.
3. The ecological sewage treatment system according to claim 1, wherein the microorganism treatment zone comprises an anaerobic zone (22), an anoxic zone (23) and an aerobic zone (24), and the integrated treatment device (5) is disposed in the anoxic zone (23) and the aerobic zone (24).
4. The ecological sewage treatment system according to claim 3, wherein the biochemical treatment tank (2) further comprises a clear water zone (25), the clear water zone (25) being disposed above the aerobic zone (24).
5. The ecological sewage treatment system according to claim 3, wherein the integrated treatment unit (5) comprises an aerator (51), and the aerator (51) is communicated with the air inlet pipe (6) and is arranged in the aerobic zone (24).
6. The ecological sewage treatment system according to claim 5, wherein the integrated treatment device (5) further comprises a biological carrier and a reflux device (52), the biological carrier is enclosed around the aerator (51) and the reflux device (52), and the aerobic zone and the anoxic zone are different in type from the biological carrier.
7. The ecological sewage treatment system according to claim 2, wherein the grid spacing of the second grid area (13) is smaller than the grid spacing of the first grid area (12).
8. The ecological sewage treatment system according to claim 1, wherein the bottom of the biochemical treatment tank (2) is further paved with an impermeable membrane (26).
9. The ecological sewage treatment system according to claim 1, wherein the water inlet pipe (4) has a plurality of water outlets, and the plurality of water outlets face the microorganism treatment area.
10. The ecological sewage treatment system according to any one of claims 1 to 9, wherein a biological floating island is further arranged on the biochemical treatment tank (2), and plants are planted on the biological floating island.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920443477.5U CN209872686U (en) | 2019-04-02 | 2019-04-02 | Ecological sewage treatment system |
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| CN201920443477.5U CN209872686U (en) | 2019-04-02 | 2019-04-02 | Ecological sewage treatment system |
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| CN209872686U true CN209872686U (en) | 2019-12-31 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110078297A (en) * | 2019-04-02 | 2019-08-02 | 浦华环保有限公司 | Ecological wastewater treatment system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110078297A (en) * | 2019-04-02 | 2019-08-02 | 浦华环保有限公司 | Ecological wastewater treatment system and method |
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