CN215049517U - Biochemical pond of nitrogen and phosphorus removal is reinforceed to side flow - Google Patents
Biochemical pond of nitrogen and phosphorus removal is reinforceed to side flow Download PDFInfo
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- CN215049517U CN215049517U CN202121048905.8U CN202121048905U CN215049517U CN 215049517 U CN215049517 U CN 215049517U CN 202121048905 U CN202121048905 U CN 202121048905U CN 215049517 U CN215049517 U CN 215049517U
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Abstract
The utility model discloses a biochemical pond of nitrogen and phosphorus removal is reinforceed to side flow, including reinforceing denitrogenation district, mud hydrolysis district, anaerobic zone, anoxic zone and aerobic zone, reinforce denitrogenation district, mud hydrolysis district, anaerobic zone, anoxic zone and aerobic zone and connect gradually, sewage flows in from reinforceing denitrogenation district, flows out from aerobic zone. The top of the enhanced denitrification zone, the top of the sludge hydrolysis zone, the top of the anaerobic zone and the top of the anoxic zone are respectively provided with a cover plate, the middle of the enhanced denitrification zone, the top of the sludge hydrolysis zone, the middle of the anaerobic zone and the middle of the anoxic zone are respectively provided with a stirrer, and the bottom of the enhanced denitrification zone, the bottom of the sludge hydrolysis zone and the bottom of the aerobic zone are respectively provided with an aeration group. Can realize the technology of the sludge side-stream hydrolysis process, further improve the recovery and utilization of the 'internal carbon source' and improve the efficiency of water treatment.
Description
Technical Field
The utility model relates to the technical field of environmental protection, concretely relates to biochemical pond of nitrogen and phosphorus removal is reinforceed to side flow.
Background
In recent years, with the continuous acceleration of the urbanization process of China and the rapid development of social economy, excessive nutrient salts such as nitrogen, phosphorus and the like are transferred to natural water bodies by human activities, so that eutrophication phenomena such as 'water bloom' and 'red tide' are more and more frequent. At present, about 30 percent of water bodies in rivers and lakes around the world have serious eutrophication problems. The eutrophication problem of natural water body in China is particularly severe, and about 56 percent of lakes (the area of the water area is more than or equal to 1 km)2) In different degrees of eutrophication. Water quality type water shortage caused by eutrophication has become an important reason influencing the safety of drinking water and restricting the production and the life of human beings and the sustainable development of society.
Relevant research shows that the excessive nitrogen and phosphorus nutrient salt discharged by a sewage treatment plant respectively account for 14 percent and 34 percent of the nitrogen and phosphorus input load of a water body. Therefore, the prevention and control of eutrophication from the source by reducing the discharge load of nitrogen and phosphorus nutritive salt in sewage treatment plants are urgently needed. The reason for restricting the further improvement of the total nitrogen and total phosphorus efficiency of the sewage treatment plant is that the concentration and the availability of organic matters in the sewage are low. Dependence on external carbon sources (such as sodium acetate addition) can place a heavy burden on the operating costs of sewage treatment plants.
Therefore, in order to reduce the cost of carbon source supply for nitrogen and phosphorus removal of a sewage treatment plant, a great deal of research is currently carried out on the technology for recovering and enhancing the biological nitrogen and phosphorus removal efficiency based on an 'internal carbon source', the assumption of the low organic matter sludge side-stream hydrolysis process is provided, and a new direction and a new thought are provided for the construction of the sewage treatment plant.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides a side-stream enhanced nitrogen and phosphorus removal biochemical pool for realizing the sludge side-stream hydrolysis process.
In order to achieve the purpose of the invention, the technical scheme adopted by the utility model is as follows:
a side-stream enhanced nitrogen and phosphorus removal biochemical pool comprises an enhanced nitrogen removal zone, a sludge hydrolysis zone, an anaerobic zone, an anoxic zone and an aerobic zone, wherein the enhanced nitrogen removal zone, the sludge hydrolysis zone, the anaerobic zone, the anoxic zone and the aerobic zone are sequentially connected, and sewage flows in from the enhanced nitrogen removal zone and flows out from the aerobic zone;
the method is characterized in that: the top parts of the enhanced denitrification zone, the sludge hydrolysis zone, the anaerobic zone and the anoxic zone are respectively provided with a cover plate, the middle parts of the enhanced denitrification zone, the sludge hydrolysis zone, the anaerobic zone and the anoxic zone are respectively provided with a stirrer, and the bottoms of the enhanced denitrification zone, the sludge hydrolysis zone and the aerobic zone are respectively provided with an aeration group;
the enhanced denitrification area, the sludge hydrolysis area and the anaerobic area are all connected with sludge return pipes;
furthermore, the aerobic zone is L-shaped, and the tail end of the aerobic zone is connected with the anoxic zone.
Further, the cover plate is arc-shaped, an odor collecting pipe is connected to the arc top of the cover plate, and the odor collecting pipe is connected with the UV deodorization system.
Furthermore, the aerobic zone is connected with the anoxic zone through a nitrification reflux pipe, and a reflux pump is arranged on the nitrification reflux pipe.
Furthermore, one end of the nitrification reflux pipe is an inclined plane opening, a sealing cover is movably arranged on the nitrification reflux pipe, the reflux pump is movably arranged in the aerobic zone through a positioning slide rod, and the reflux pump is connected with a lifting mechanism arranged at the top of the positioning slide rod.
Furthermore, the top of the enhanced denitrification area, the sludge hydrolysis area, the anaerobic area, the anoxic area and the aerobic area is provided with flat steel, and the flat steel is provided with a plurality of mounting holes for mounting guardrail vertical rods.
Furthermore, an enhanced denitrification area in the side-stream enhanced denitrification and dephosphorization biochemical tank is connected with the grit chamber.
Furthermore, a water channel is arranged above the enhanced denitrification area, the sludge hydrolysis area and the anaerobic area, and the water channel is connected with the grit chamber, the enhanced denitrification area, the sludge hydrolysis area and the anaerobic area.
The utility model has the advantages that: through the technical structure of the utility model, realize the technique of mud sidestream hydrolysis process, further promote "interior carbon source" and retrieve and utilize, promote water treatment's efficiency, reduce sewage treatment's cost.
Drawings
Fig. 1 is a schematic top view of the present invention.
Fig. 2 is a schematic bottom structure diagram of the present invention.
Fig. 3 is a schematic cross-sectional view of a-a in fig. 1.
Fig. 4 is a partially enlarged structural view of the guardrail upright in the area B in fig. 3.
Fig. 5 is a schematic side view of the reflux pump.
FIG. 6 is an enlarged partial schematic view of the water gate plate in the area C of FIG. 3.
Fig. 7 is a schematic sectional view of the present invention.
Fig. 8 is a schematic top view of the present aerobic zone.
Fig. 9 is a schematic structural view of a section F-F in fig. 2.
Fig. 10 is a schematic view of the water flow direction of the present invention.
Fig. 11 is a schematic structural view of the drainage port.
Detailed Description
The present invention will be further described with reference to the following drawings and examples, and embodiments of the present invention include, but are not limited to, the following examples.
Example 1
As shown in the figure 1 and figure 2, a side-stream enhanced nitrogen and phosphorus removal biochemical pool comprises an enhanced nitrogen removal zone 1, a sludge hydrolysis zone 2, an anaerobic zone 3, an anoxic zone 4 and an aerobic zone 5. The enhanced denitrification zone 1, the sludge hydrolysis zone 2, the anaerobic zone 3, the anoxic zone 4 and the aerobic zone 5 are sequentially connected, sewage flows into the enhanced denitrification zone 1 through the water inlet pipe 101, is sequentially treated through the enhanced denitrification zone 1, the sludge hydrolysis zone 2, the anaerobic zone 3 and the anoxic zone 4, and flows out of a water outlet of the aerobic zone 5. Wherein a water gate plate 13 is provided at the sewage flow inlet of each functional area. As shown in the area E in FIG. 10, a water draining port 14 is arranged at the top of the joint of the sludge hydrolysis zone 2 and the anaerobic zone 3, and a water draining port 14 is also arranged at the top of the joint of the enhanced denitrification zone 1 and the anoxic zone 4.
As shown in fig. 11, the bleeding opening 14 is formed in an inverted bell mouth shape, and the lower portion thereof is communicated with the adjacent water treatment area through a pipe. When the sewage amount is large, the liquid level of the sewage rises, and part of the sewage enters the anaerobic zone 3 from the sludge hydrolysis zone 2 through the water discharge port 14 and enters the anoxic zone 4 from the enhanced denitrification zone 1.
As shown in fig. 1 to 3, the reinforced denitrification zone 1, the sludge hydrolysis zone 2, the anaerobic zone 3 and the anoxic zone 4 are all provided with a cover plate 504 at the top, the reinforced denitrification zone 1, the sludge hydrolysis zone 2, the anaerobic zone 3 and the anoxic zone 4 are all provided with a stirrer 6 at the middle, and the stirrer 6 is arranged on a beam fixed above the reinforced denitrification zone 1, the sludge hydrolysis zone 2, the anaerobic zone 3 and the anoxic zone 4. The bottom of the enhanced denitrification zone 1, the bottom of the sludge hydrolysis zone 2 and the bottom of the aerobic zone 4 are provided with aeration groups 7, and an air blower air pipe 701 pumps gas into the aeration groups 7 through an air pipe 702 to increase dissolved oxygen.
As shown in fig. 9, the enhanced denitrification area 1, the sludge hydrolysis area 2 and the anaerobic area 3 are all connected with sludge return pipes 8, so that the sludge cleared from the sidestream enhanced denitrification and dephosphorization biochemical pool can be pumped back to the enhanced denitrification area 1, the sludge hydrolysis area 2 and the anaerobic area 3 for reuse, the utilization rate of an internal carbon source in the biochemical pool is improved, the input of an external carbon source is reduced, and the denitrification effect in the sewage treatment process is improved. The water amount and the carbon content of the enhanced denitrification area 1, the sludge hydrolysis area 2, the anaerobic area 3 and the anoxic area 4 can be dynamically regulated and controlled through the water discharge port 14, the sludge return pipe 8 and the second sludge return pipe 801, so that the utilization rate of an internal carbon source and the sewage treatment effect are improved. The sludge return pipe 8 and the second sludge return pipe 801 are not opened at the same time, so that the regulation and control of the carbon content in the biochemical pond can be performed by single-point supplement in the enhanced denitrification area 1 through the second sludge return pipe 801, and can also be performed by multi-point carbon source supplement in the enhanced denitrification area 1, the sludge hydrolysis area 2 and the anaerobic area 3 through the sludge return pipe 8 according to the situation.
As shown in fig. 8, the aerobic zone 5 is L-shaped, and the end of the aerobic zone 5 is connected to the anoxic zone 4. The aerobic zone 5 and the anoxic zone 4 are both internally provided with a plurality of clapboards, so that sewage flows in a roundabout way, the action time is prolonged, and the floor area is reduced.
The cover plate 504 is arc-shaped, the arc top of the cover plate 504 is connected with a odor collecting pipe 501, and the odor collecting pipe 501 is connected with a UV deodorization system 502. The cover plate 504 is also provided with an openable movable door 503 for easy maintenance.
The aerobic zone 5 and the anoxic zone 4 are connected through a nitrification reflux pipe 12, a reflux pump 9 is arranged on the nitrification reflux pipe 12, and the nitrification reflux ratio is controlled by controlling the opening amount of the reflux pump 9.
The top in intensive denitrogenation district 1, the mud district of hydrolysising 2, anaerobic zone 3, anoxic zone 4 and aerobic zone 5 is equipped with band steel 10, be equipped with a plurality of mounting holes that are used for installing guardrail pole setting 11 on the band steel 10, guardrail pole setting 11 is installed on band steel 10, the dismouting and the maintenance in the later stage of being convenient for.
Example 2
As shown in fig. 1 and fig. 2, in the present embodiment, the sidestream enhanced nitrogen and phosphorus removal biochemical pool is provided as two groups of side-by-side mirror images, and the enhanced nitrogen and phosphorus removal areas 1 of the two sidestream enhanced nitrogen and phosphorus removal biochemical pools share the same water inlet 101, which is convenient for the sidestream enhanced nitrogen and phosphorus removal biochemical pool to perform a control experiment of parameter debugging under the condition that the input sewage parameters are the same.
In this embodiment, a grit chamber 102 is provided between the water inlet 101 and the enhanced denitrification region 1. The water inlet 101 is arranged at a lower position of the grit chamber 102, and sewage flows in from the water inlet 101 and then is gathered in the grit chamber 102, and finally flows into the enhanced denitrification area 1 from the water gate plate 13 at a higher position of the grit chamber 102. The water inlet 101 and the water overflow gate 13 are arranged in a staggered manner, so that on one hand, after the sewage passes through the sedimentation effect of the grit chamber 102, sand and stones in the sewage can be cleaned, and on the other hand, the water inlet 101 is arranged at a lower position, so that the grit chamber 102 is prevented from being impacted by excessive inflowing sewage.
Example 3
As shown in fig. 6, in this embodiment, the water gate plate 13 is connected to a screw 131, the screw 131 passes through a fixing ring 132 fixed on the side wall of the side flow enhanced nitrogen and phosphorus removal biochemical pool, the screw 131 is connected to the lifting base 13 at the top, a rotating disc is arranged on the lifting base 133 and is in threaded connection with the screw 131, and the length of the screw 131 extending out of the lifting base 13 is controlled by rotating the rotating disc, so as to further control the opening and closing of the water gate plate 13.
Example 4
As shown in FIG. 5, in this embodiment, one end of the nitrification reflux pipe 12 is a slant opening facing the water surface, and a sealing cover 121 is movably disposed on the slant opening. The opening of the inclined plane is towards the water surface, so that the sealing cover 121 is pressed by water pressure and is completely closed when the reflux pump 9 does not work. The reflux pump 9 is arranged on the positioning slide bar 122 in a sliding way, and the positioning slide bar 122 is fixedly arranged on the side wall of the aerobic zone 4. The reflux pump 9 is connected with a lifting mechanism 123 arranged at the top of the positioning slide rod 122, so that the reflux pump 9 can be conveniently lifted for maintenance.
Example 5
As shown in fig. 3, 9 and 10, a canal 15 is arranged above the side flow enhanced nitrogen and phosphorus removal biochemical pool, and the canal is arranged along the top edges of the enhanced nitrogen removal zone 1, the sludge hydrolysis zone 2 and the anaerobic zone 3. The water inlet end of the water channel 15 is communicated with the top of the grit chamber 102, the water outlet end is communicated with the anaerobic zone 3, the middle part of the water channel 15 is respectively provided with a water replenishing point above the enhanced denitrification zone 1, the sludge hydrolysis zone 2 and the anaerobic zone 3, and flashboards are arranged at the water inlet point, the water outlet point and the water replenishing point of the water channel 15. The region of the canal 15 where the watering points are located is shown as region D in figure 10. By providing a water supply point above the ditch 15, the carbon source content in each area can be further dynamically adjusted, and the sewage treatment effect can be adjusted.
Claims (7)
1. A side flow enhanced nitrogen and phosphorus removal biochemical pool comprises an enhanced nitrogen removal zone (1), a sludge hydrolysis zone (2), an anaerobic zone (3), an anoxic zone (4) and an aerobic zone (5), wherein the enhanced nitrogen removal zone (1), the sludge hydrolysis zone (2), the anaerobic zone (3), the anoxic zone (4) and the aerobic zone (5) are sequentially connected, and sewage flows in from the enhanced nitrogen removal zone (1) and flows out from the aerobic zone (5);
the method is characterized in that: the top parts of the enhanced denitrification zone (1), the sludge hydrolysis zone (2), the anaerobic zone (3) and the anoxic zone (4) are all provided with a cover plate (504), the middle parts of the enhanced denitrification zone (1), the sludge hydrolysis zone (2) and the anoxic zone (4) are all provided with a stirrer (6), and the bottoms of the enhanced denitrification zone (1), the sludge hydrolysis zone (2) and the aerobic zone (5) are all provided with aeration groups (7);
the enhanced denitrification area (1), the sludge hydrolysis area (2) and the anaerobic area (3) are all connected with sludge return pipes (8);
the aerobic zone (5) is L-shaped, and the tail end of the aerobic zone (5) is connected with the anoxic zone (4).
2. The biochemical pond for enhancing nitrogen and phosphorus removal by side flow as claimed in claim 1, wherein the cover plate (504) is arc-shaped, an odor collecting pipe (501) is connected to the arc top of the cover plate (504), and the odor collecting pipe (501) is connected with the UV deodorization system (502).
3. The biochemical pond for side-stream enhanced nitrogen and phosphorus removal as claimed in claim 2, wherein the aerobic zone (5) and the anoxic zone (4) are connected through a nitrification reflux pipe (12), and a reflux pump (9) is arranged on the nitrification reflux pipe (12).
4. The biochemical pool for side-stream enhanced nitrogen and phosphorus removal as defined in claim 3, wherein one end of the nitrification reflux pipe (12) is a slant opening and is movably provided with a sealing cover (121), the reflux pump (9) is movably arranged in the aerobic zone (4) through a positioning slide bar (122), and the reflux pump (9) is connected with a lifting mechanism (123) arranged at the top of the positioning slide bar (122).
5. The biochemical pond of the lateral flow enhanced nitrogen and phosphorus removal of claim 1, wherein the top of the enhanced nitrogen removal zone (1), the sludge hydrolysis zone (2), the anaerobic zone (3), the anoxic zone (4) and the aerobic zone (5) is provided with a flat steel (10), and the flat steel (10) is provided with a plurality of mounting holes for mounting the guardrail upright rods (11).
6. The biochemical pond for enhanced nitrogen and phosphorus removal of a side stream as claimed in claim 1, wherein the enhanced nitrogen removal zone (1) in the biochemical pond for enhanced nitrogen and phosphorus removal of a side stream is connected with the grit chamber (102).
7. The biochemical pond of the lateral flow enhanced nitrogen and phosphorus removal of claim 1, wherein a water channel (15) is arranged above the enhanced nitrogen removal zone (1), the sludge hydrolysis zone (2) and the anaerobic zone (3), and the water channel (15) is connected with the sand basin (102), the enhanced nitrogen removal zone (1), the sludge hydrolysis zone (2) and the anaerobic zone (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121048905.8U CN215049517U (en) | 2021-05-17 | 2021-05-17 | Biochemical pond of nitrogen and phosphorus removal is reinforceed to side flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121048905.8U CN215049517U (en) | 2021-05-17 | 2021-05-17 | Biochemical pond of nitrogen and phosphorus removal is reinforceed to side flow |
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| Publication Number | Publication Date |
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| CN215049517U true CN215049517U (en) | 2021-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121048905.8U Active CN215049517U (en) | 2021-05-17 | 2021-05-17 | Biochemical pond of nitrogen and phosphorus removal is reinforceed to side flow |
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| CN (1) | CN215049517U (en) |
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Effective date of registration: 20221205 Address after: No.11, Xinghui Middle Road, Jinniu District, Chengdu, Sichuan 610000 Patentee after: SOUTHWEST MUNICIPAL ENGINEERING DESIGN & Research Institute OF CHINA Patentee after: Sichuan development environmental science and Technology Research Institute Co.,Ltd. Address before: No.11, Xinghui Middle Road, Jinniu District, Chengdu, Sichuan 610000 Patentee before: SOUTHWEST MUNICIPAL ENGINEERING DESIGN & Research Institute OF CHINA |