CN215855349U - Up-flow biochemical reaction device - Google Patents
Up-flow biochemical reaction device Download PDFInfo
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- CN215855349U CN215855349U CN202023249194.9U CN202023249194U CN215855349U CN 215855349 U CN215855349 U CN 215855349U CN 202023249194 U CN202023249194 U CN 202023249194U CN 215855349 U CN215855349 U CN 215855349U
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Abstract
The utility model provides an up-flow biochemical reaction device, and belongs to the technical field of pollution treatment. The integrated sewage treatment device solves the problems that the existing integrated sewage treatment device adopts horizontal flow direction arrangement for biochemical treatment, and occupies a large space. The utility model comprises at least two biochemical reaction zones which are longitudinally distributed, the adjacent biochemical reaction zones are separated by a partition device, one biochemical reaction zone is an aerobic reaction zone, the other biochemical reaction zone is an anoxic reaction zone, and the aerobic reaction zone and the anoxic reaction zone are vertically distributed and are communicated by an internal circulation reflux device. The utility model has high sewage treatment efficiency and scientific and reasonable structural design, the domestic sewage is gradually decomposed from bottom to top through the anoxic reaction units and the aerobic reaction units in sequence, the characteristic of dissolved oxygen concentration change is fully utilized, the treatment efficiency of the distributed domestic sewage can be effectively improved, and the defects of large occupied area of conventional equipment and the like are overcome.
Description
Technical Field
The utility model belongs to the technical field of pollution treatment, relates to a distributed small-scale domestic sewage treatment device, and particularly relates to an up-flow biochemical reaction device.
Background
Water is an indispensable resource in human daily life and is a basic condition for the growth of all things. However, human activities are continuously discharging large amounts of sewage, such as sewage from manufacturing mining and industrial production, sewage from residences, hospitals, etc., sewage from commercial facilities, etc., into water. Most of sewage can be transported to a sewage treatment plant through pipelines for centralized treatment, and distributed domestic sewage is inconvenient and uneconomical if pipeline transportation is adopted. However, the domestic sewage is directly discharged into the water body, so that the water environment quality is easily damaged, the water body eutrophication is formed, and the crisis of fresh water resources is aggravated. Therefore, the treatment of decentralized domestic sewage is imminent.
The current common distributed domestic sewage treatment measures comprise septic tank treatment, methane tank treatment, artificial wetland treatment, land treatment and integrated purification device treatment. The septic tank is adopted for treatment, so that the sludge is easy to block, and the treatment effect cannot reach the standard; the biogas digester is adopted for treatment, so that the requirement on temperature is high, and the operation is difficult; the artificial wetland treatment is adopted, the required area is large, and the applicability is not high; the soil is easily polluted by adopting the land treatment; the treatment with integrated purification devices is now and in the future more developed. The moving bed biochemical reaction is an important technology for treating the distributed domestic sewage. The method utilizes the biomembrane formed on the carrier to decompose the pollutants in the sewage through anaerobic, anoxic and aerobic reactions so as to achieve the effects of nitrogen and phosphorus removal. However, the application of the method is limited to a certain extent due to the defects of dead space, uneven movement of the filling material, higher energy consumption, smaller available land area and the like in the pool. In addition, each biochemical treatment of the conventional integrated device adopts horizontal flow direction arrangement, the structure is simple, the processing and the manufacturing are convenient, and the occupied space is wasted. Therefore, if the treatment process and the space structure can be optimized simultaneously, the application prospect is very wide.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the existing distributed domestic sewage treatment equipment, and provides an upflow biochemical reaction device, wherein an original horizontal anoxic and aerobic process unit is optimized to form a vertical flow superposition structure through processes such as upflow circulation and the like, so that the occupied space is saved, the biological membrane can be efficiently utilized, the domestic sewage is in full contact reaction with the biological membrane, and the treatment effect is obvious.
The purpose of the utility model can be realized by the following technical scheme:
the upflow biochemical reaction device is characterized by comprising at least two biochemical reaction zones which are longitudinally distributed, wherein the two adjacent biochemical reaction zones are separated by a partition device, one biochemical reaction zone is an aerobic reaction zone, the other biochemical reaction zone is an anoxic reaction zone, and the aerobic reaction zone and the anoxic reaction zone are vertically distributed and are communicated through an internal circulation reflux device.
Preferably, the internal circulation reflux device comprises an internal circulation reflux pipe and a magnetic pump, and the internal circulation reflux pipe is connected to the bottom of the anoxic reaction zone from the top of the aerobic reaction zone through the magnetic pump.
Preferably, the upper part of the aerobic reaction zone is provided with a water outlet, and the lower part of the anoxic reaction zone is provided with a water inlet.
The water outlet is communicated with the aerobic reaction zone and the outside, and the water inlet is communicated with the anoxic reaction zone and the outside; the sewage enters the anoxic reaction zone and the aerobic reaction zone from the water inlet in sequence, undergoes a series of biochemical reactions and is finally discharged from the water outlet.
Preferably, the height of the anoxic reaction zone is controlled to be 1/4-1/3 of the height of the aerobic reaction zone.
Preferably, the height of the anoxic reaction zone is 1m-2m, and the height of the aerobic reaction zone is 4m-6 m.
The arrangement can ensure the contact reaction efficiency of the domestic sewage and the biological film on the following moving bed biofilm formation filler, and simultaneously control the reasonable domestic sewage treatment amount.
Preferably, the upflow biochemical reaction device further comprises moving bed biofilm formation filler, and the aerobic reaction zone and the anoxic reaction zone are respectively provided with one moving bed biofilm formation filler.
Preferably, the upflow biochemical reaction device further comprises an aeration system, the aeration system is positioned in the aerobic reaction zone, the aeration system comprises an air pipe and an aerator, one end of the air pipe is communicated with the outside, and the other end of the air pipe is communicated with the aerator.
Preferably, the aerator is positioned below the corresponding moving bed biofilm culturing filler.
The aerator is a microporous aerator, the air pipe comprises an aeration main pipe and an aeration branch pipe, and the aeration rate is 2m per square3/h-4m3The/h is preferably used for ensuring that sufficient dissolved oxygen can be provided for the aerobic reaction zone, fully stirring the moving bed biofilm-forming filler of the aerobic reaction zone and promoting the nutrient transfer efficiency on the surface of the biological membrane.
Preferably, the upflow biochemical reaction device further comprises a water distribution system, and the water distribution system is positioned in the anoxic reaction zone and below the corresponding moving bed biofilm formation filler.
Preferably, the water distribution system comprises a main pipe and a plurality of perforated pipes, wherein the perforated pipes are uniformly distributed on the main water distribution pipe and communicated with the main water distribution pipe, and the perforated pipes are obliquely and downwards provided with holes at intervals.
The aperture of the perforated pipe is preferably that the flow rate of the effluent reaches 1m/s-2m/s, so as to ensure that the moving bed biofilm-forming filler in the anoxic reaction zone can be stirred, and the shedding metabolism of the aged biomembrane is promoted.
Preferably, the partition device is a grating plate, a plurality of holes are formed in the grating plate, and the aperture of the grating plate is smaller than 20 mm.
The aperture of the grating plate is less than 20mm, so that water flow is ensured to pass smoothly, and the mixing of biofilm formation fillers in the anoxic reaction zone and the anaerobic zone is prevented.
Preferably, the filling rate of the moving bed biofilm formation filler is 60-80%, and the actual specific surface area is 800-1200m2/m3So as to ensure larger contact area between the biological membrane and the domestic sewage and improve the treatment efficiency of the domestic sewage.
The internal circulation return pipe is connected to a water distribution system at the bottom of the anoxic reaction zone from the upper end of the aerobic reaction zone through the magnetic pump and the check valve, water can be circularly fed, the denitrification function of aerobic nitrification and anoxic denitrification is achieved, meanwhile, dissolved oxygen in the aerobic reaction zone can be brought into the anoxic zone, the concentration of the low-concentration dissolved oxygen is ensured, and accordingly aeration energy consumption is reduced. In addition, the backflow amount can be adjusted, so that the higher flow velocity of the water distribution system is guaranteed, and the effect of the upflow stirring moving bed filler is ensured.
The utility model has the following beneficial effects:
(1) the utility model effectively treats the distributed domestic sewage by utilizing the biological membrane, and has high sewage treatment efficiency. The internal circulation return pipe can continuously carry out circulating treatment on the domestic sewage, not only can achieve the denitrification effect, but also can ensure the better moving state of the filler, promote the metabolism of the biomembrane on the surface of the filler and ensure the quality of the effluent water.
(2) The utility model has scientific and reasonable structural design and uniform distribution of the water distribution pipes and the aeration pipes, can effectively reduce energy consumption in the operation process, reduce water flow dead zones, and reduce the problem of serious strain loss of the effluent of conventional equipment by the characteristic of gradual speed reduction of upflow.
(3) According to the utility model, domestic sewage is gradually decomposed from bottom to top through the anoxic reaction unit and the aerobic reaction unit, the characteristic of dissolved oxygen concentration change is fully utilized, the treatment efficiency of distributed domestic sewage can be effectively improved, and the defect of large occupied area of conventional equipment is overcome.
Drawings
FIG. 1 is a schematic top view of the present invention;
FIG. 2 is a sectional view taken along line A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;
FIG. 4 is a layout of an aeration system according to the present invention;
FIG. 5 is a schematic view of the position and structure of the water distribution system of the present invention;
fig. 6 is a schematic structural view of a perforated pipe portion of the utility model.
In the figure, 1, a biochemical reaction area; 2. a grid plate; 3. a water distribution system; 4. an aeration system; 5. an internal circulation return pipe; 6. moving bed biofilm formation filler; 7. a magnetic pump; 8. a check valve; 9. a water inlet; 10. a water outlet; 11. an aerobic reaction zone; 12. an anoxic reaction zone; 13. an aeration main pipe; 14. an aeration branch pipe; 15. an aerator; 16. a water distribution main pipe; 17. and (4) perforating the tube.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in figures 1-6, the upflow biochemical reaction device provided by the utility model comprises a biochemical reaction zone 1, a water distribution system 3, an aeration system 4, an internal circulation reflux pipe 5, a moving bed biofilm formation filler 6, a water inlet 9 and a water outlet 10.
The biochemical reaction zone 1 comprises at least two biochemical reaction zones which are longitudinally distributed, the adjacent biochemical reaction zones 1 are separated by a partition device, the two biochemical reaction zones 1 are arranged in the longitudinal space of the utility model and are respectively an aerobic reaction zone 11 and an anoxic reaction zone 12, and the partition device is a grid plate 2. The grating plate 2 is horizontally arranged in the inner cavity of the upflow biochemical reaction device.
The water distribution system 3 is arranged at the bottom of the anoxic reaction zone 12, the aeration system 4 is arranged in the aerobic reaction zone 11 and is positioned above the grating plate 2, the internal circulation return pipe 5 is connected to the bottom of the anoxic reaction zone 12 from the top of the aerobic reaction zone 11 through the magnetic pump 7, and the moving bed biofilm culturing filler 6 is arranged in each biochemical reaction zone 1.
As shown in FIG. 4, the aeration system 4 is composed of a main aeration pipe 13, branch aeration pipes 14 and a plurality of microporous aerators 15, the aerators 15 are arranged on the branch aeration pipes 14, and the aeration rate is 3m per square3The/h is preferably used to ensure that sufficient dissolved oxygen can be provided for the aerobic reaction zone 11 and the moving bed packing 6 of the aerobic reaction zone 11 is sufficiently agitated to promote the nutrient transfer efficiency on the biofilm surface.
As shown in fig. 5, the water distribution system 3 comprises a main water distribution pipe 16 and perforated pipes 17, wherein the perforated pipes 17 are uniformly distributed on the main water distribution pipe 16 and communicated with the main water distribution pipe 16, the perforated pipes 17 are obliquely and downwards staggered to form holes, and the hole diameter is preferably set to allow the water outlet flow rate to reach 1.5m/s, so as to ensure that the moving bed biofilm culturing filler 6 in the anoxic reaction zone 12 can be stirred, and the falling metabolism of the aged biofilm is promoted.
The water inlet 9 is communicated with the anoxic reaction zone 12 at the bottom of the device, and the water outlet 10 is communicated with the aerobic reaction zone 11 at the upper edge of the device.
The height of the anoxic reaction zone 12 is controlled at 3/10 of the height of the aerobic reaction zone 11. The height of the anoxic reaction zone is 1.5m, and the height of the aerobic reaction zone is 11 m, so that the contact reaction efficiency of the domestic sewage and the biological membrane is ensured, and the reasonable domestic sewage treatment amount is controlled.
The aperture of the grating plate 2 is less than 20mm, so that the water flow can smoothly pass through the grating plate, and the mixing of the moving bed biofilm formation fillers 6 in the anoxic reaction zone 12 and the aerobic reaction zone 11 is prevented.
The internal circulation return pipe 5 is connected to the water distribution system 3 at the bottom of the anoxic reaction zone 12 from the upper end of the aerobic reaction zone 11 through the magnetic pump 7 and the check valve 8, water can be circularly fed, the denitrification function of aerobic nitrification and anoxic denitrification is achieved, meanwhile, dissolved oxygen in the aerobic reaction zone 11 can be brought into the anoxic reaction zone 12, the concentration of the low-concentration dissolved oxygen is ensured, and accordingly, the aeration energy consumption is reduced. In addition, the backflow amount can be adjusted, so that the higher flow speed of the water distribution system 3 is guaranteed, and the effect of the upflow stirring moving bed biofilm culturing filler 6 is ensured.
The filling rate of the moving bed biofilm formation filler 6 is 70 percent, and the actual specific surface area is 1000m2/m3To ensure survivalThe object membrane has larger contact area with the domestic sewage, and the treatment efficiency of the domestic sewage is improved.
It is to be understood that in the claims, the specification of the present invention, all "including … …" are to be interpreted in an open-ended sense, i.e., in a sense equivalent to "including at least … …", and not in a closed sense, i.e., in a sense not to be interpreted as "including only … …".
Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.
Claims (6)
1. The up-flow biochemical reaction device is characterized by comprising at least two biochemical reaction zones which are longitudinally distributed, wherein the two adjacent biochemical reaction zones are separated by a partition device, one biochemical reaction zone is an aerobic reaction zone, the other biochemical reaction zone is an anoxic reaction zone, the aerobic reaction zone and the anoxic reaction zone are vertically distributed and are communicated through an internal circulation reflux device, the internal circulation reflux device comprises an internal circulation reflux pipe and a magnetic pump, the internal circulation reflux pipe is connected to the bottom of the anoxic reaction zone from the top of the aerobic reaction zone through the magnetic pump, the up-flow biochemical reaction device further comprises moving bed biofilm-forming fillers, the aerobic reaction zone and the anoxic reaction zone are respectively provided with a moving bed biofilm-forming filler, the up-flow biochemical reaction device further comprises a water distribution system, the water distribution system is positioned in the anoxic reaction zone and below the corresponding moving bed biofilm-forming fillers, the water distribution system comprises a main pipe and a plurality of perforated pipes, wherein the perforated pipes are uniformly distributed on the main water distribution pipe and communicated with the main water distribution pipe, and the perforated pipes are obliquely and downwards provided with holes at intervals.
2. An upflow biochemical reactor as in claim 1, wherein the upper part of the aerobic reaction zone is provided with a water outlet and the lower part of the anoxic reaction zone is provided with a water inlet.
3. An upflow biochemical reactor as in claim 1, wherein the anoxic zone has a height 1/4-1/3 of the aerobic zone.
4. An upflow biochemical reactor as in claim 1, further comprising an aeration system, the aeration system is located in the aerobic reaction zone, the aeration system comprises an air pipe and an aerator, one end of the air pipe is open to the outside, and the other end is communicated with the aerator.
5. An upflow biochemical reactor as in claim 4, wherein the aerator is located below the corresponding moving bed biofilm-forming filler.
6. An upflow biochemical reactor as in claim 1, wherein the partition means is a grating plate, the grating plate has a plurality of holes, and the aperture of the grating plate is smaller than 20 mm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020223622999 | 2020-10-21 | ||
| CN202022362299 | 2020-10-21 |
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| CN215855349U true CN215855349U (en) | 2022-02-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115028264A (en) * | 2022-06-13 | 2022-09-09 | 华南理工大学 | Preposed anoxic sludge film composite biological nitrogen and phosphorus removal reactor and sewage treatment method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115028264A (en) * | 2022-06-13 | 2022-09-09 | 华南理工大学 | Preposed anoxic sludge film composite biological nitrogen and phosphorus removal reactor and sewage treatment method |
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