CN209740931U - High-efficient nitrogen and phosphorus removal sewage treatment system - Google Patents
High-efficient nitrogen and phosphorus removal sewage treatment system Download PDFInfo
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- CN209740931U CN209740931U CN201920286333.3U CN201920286333U CN209740931U CN 209740931 U CN209740931 U CN 209740931U CN 201920286333 U CN201920286333 U CN 201920286333U CN 209740931 U CN209740931 U CN 209740931U
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Abstract
A high-efficiency nitrogen and phosphorus removal sewage treatment system comprises a pre-denitrification tank, an anaerobic tank, an anoxic tank, an aerobic tank, a first fan and a second fan; the anaerobic tank is positioned between the pre-denitrification tank and the anoxic tank; the input end of the anaerobic tank is communicated with the pre-denitrification tank; the output end of the anaerobic tank is communicated with the anoxic tank; the output end of the anoxic tank is communicated with the first sedimentation tank; the first sedimentation tank is communicated with the moving biological bed reactor; the bottom of the first sedimentation tank is also provided with a first return pipe, and the other end of the first return pipe is communicated with the pre-denitrification tank; the output end of the moving biological bed reactor is communicated with a second sedimentation tank; a drain pipe is arranged on the second sedimentation tank, and a sludge discharge pipe is arranged at the bottom of the second sedimentation tank; a second return pipe is also arranged on the second sedimentation tank, and the other end of the second return pipe is communicated with the anoxic tank; the blowing direction of the first fan faces the aerobic tank, and the blowing direction of the second fan faces the moving biological bed reactor. The utility model discloses can play the effect of high-efficient nitrogen and phosphorus removal, it is effectual to the treatment of sewage, the treatment effeciency is high.
Description
Technical Field
the utility model relates to a sewage treatment technical field especially relates to a high-efficient nitrogen and phosphorus removal sewage treatment system.
Background
In order to discharge sewage into a certain water body or reach the standard of reuse, the sewage needs to be purified, the sewage treatment is widely applied to various fields such as buildings, agriculture, traffic, energy, petrifaction, environmental protection, urban landscape, medical treatment, catering and the like, and the sewage treatment is also increasingly advanced to the daily life of common people, the sewage treatment is generally classified according to the sewage source, the sewage treatment is generally divided into production sewage treatment and domestic sewage treatment, the production sewage comprises industrial sewage, agricultural sewage, medical sewage and the like, the domestic sewage is the sewage produced in daily life, the sewage refers to complex mixtures of inorganic matters and organic matters in various forms, including floating and suspended solid particles, colloidal and gelatinous diffusible substances and pure solutions, the water pollution is divided into natural pollution and artificial pollution according to the water pollution, and the current water body with great harm is artificial pollution, the water pollution can be mainly divided into three categories of chemical pollution, physical pollution and biological pollution according to different pollution impurities, and the pollutants mainly comprise untreated industrial wastewater, untreated domestic sewage, farmland sewage and the like;
The sewage often contains a large amount of nitrogen elements and phosphorus elements, which easily causes water eutrophication and further brings adverse effects on the ecological environment, while the existing sewage treatment process is difficult to efficiently remove nitrogen and phosphorus in the sewage, the nitrogen and phosphorus removal effect is poor, and the nitrogen and phosphorus removal efficiency is low.
SUMMERY OF THE UTILITY MODEL
objects of the invention
For solving the technical problem who exists among the background art, the utility model provides a high-efficient nitrogen and phosphorus removal sewage treatment system can play the effect of high-efficient nitrogen and phosphorus removal, and is good to the treatment effect of sewage, and the treatment effeciency is high.
(II) technical scheme
In order to solve the problems, the utility model provides a high-efficiency nitrogen and phosphorus removal sewage treatment system, which comprises a pre-denitrification tank, an anaerobic tank, an anoxic tank, an aerobic tank, a first fan and a second fan;
the anaerobic tank is positioned between the pre-denitrification tank and the anoxic tank; the input end of the anaerobic tank is communicated with the pre-denitrification tank through a connecting pipe with a one-way valve, and sewage enters the anaerobic tank from the pre-denitrification tank; the output end of the anaerobic tank is communicated with the anoxic tank through a connecting pipe with a one-way valve, and sewage enters the anoxic tank from the anaerobic tank; the output end of the anoxic tank is communicated with the first sedimentation tank through a connecting pipe with a one-way valve, and sewage enters the first sedimentation tank from the anoxic tank;
The first sedimentation tank is communicated with the moving biological bed reactor through a connecting pipe with a one-way valve, and sewage enters the moving biological bed reactor from the first sedimentation tank; the bottom of the first sedimentation tank is also provided with a first return pipe, and the other end of the first return pipe is communicated with the pre-denitrification tank;
The output end of the moving biological bed reactor is communicated with a second sedimentation tank through a connecting pipe of a one-way valve, and sewage enters the second sedimentation tank from the moving biological bed reactor; a drain pipe is arranged on the second sedimentation tank, and a sludge discharge pipe is arranged at the bottom of the second sedimentation tank; a second return pipe is also arranged on the second sedimentation tank, and the other end of the second return pipe is communicated with the anoxic tank;
The blowing direction of the first fan faces the aerobic tank, and the blowing direction of the second fan faces the moving biological bed reactor.
Preferably, a flow impeller is arranged in the pre-denitrification tank.
Preferably, the anaerobic tank is internally provided with a flow impeller.
preferably, a flow impeller is arranged in the anoxic tank.
Preferably, the first sedimentation tank has a funnel-shaped structure.
Preferably, the first return pipe is provided with a one-way valve and a mud pump, the one-way valve is positioned at a position close to the pre-denitrification tank, and the mud pump is positioned at a position close to the first sedimentation tank.
preferably, the second sedimentation tank has a funnel-shaped structure.
Preferably, the second return pipe is provided with a one-way valve and a water pump, the one-way valve is positioned at a position close to the anoxic tank, and the water pump is positioned at a position close to the second sedimentation tank.
Preferably, the density of the packing in the moving biological bed reactor is similar to the density of water.
Preferably, the water outlet end of the moving biological bed reactor is provided with a membrane interception net.
The above technical scheme of the utility model has following profitable technological effect:
By arranging the first sedimentation tank, the phosphorus-accumulating sludge and the nitrified sludge are separated, sludge can be controlled respectively, a mobile biological bed reactor is adopted for nitration reaction, novel fillers are adopted as carriers in the mobile biological bed reactor, the biomass is high, the quantity of nitrifying bacteria can be increased, the ammonia nitrogen removal effect is improved obviously, and the ammonia nitrogen can be fully converted into nitrate nitrogen in the mobile biological bed reactor, so that a good foundation is laid for removing total nitrogen in the system, and the sewage treatment effect and the sewage treatment efficiency are improved;
By proper control, the aerobic tank only completes the phosphorus accumulation effect, thereby avoiding the conversion of a large amount of ammonia nitrogen into nitrate nitrogen, reducing the concentration of nitrate in sludge reflux, and in addition, the pre-denitrification tank is added in front of the anaerobic tank, and reducing the influence of the nitrate reflux on the anaerobic phosphorus release process;
the collision and shearing action of the carriers in the moving biological bed reactor in water enables air bubbles to be finer, the utilization rate of oxygen is increased, the biomass of each carrier is very high, each carrier is a micro-reactor and mainly performs nitration reaction, and the treatment effect can be effectively improved.
Drawings
FIG. 1 is a schematic structural diagram of a high-efficiency denitrification and dephosphorization sewage treatment system provided by the utility model.
Reference numerals: 1. a pre-denitrification tank; 2. an anaerobic tank; 3. an anoxic tank; 4. an aerobic tank; 5. a first sedimentation tank; 6. a moving biological bed reactor; 7. a second sedimentation tank; 8. a flow impeller; 9. a first fan; 10. and a second fan.
Detailed Description
in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
FIG. 1 is a schematic structural diagram of a high-efficiency denitrification and dephosphorization sewage treatment system provided by the utility model.
As shown in fig. 1, the utility model provides a high-efficiency nitrogen and phosphorus removal sewage treatment system, which comprises a pre-denitrification tank 1, an anaerobic tank 2, an anoxic tank 3, an aerobic tank 4, a first fan 9 and a second fan 10;
The anaerobic tank 2 is positioned between the pre-denitrification tank 1 and the anoxic tank 3; the input end of the anaerobic tank 2 is communicated with the pre-denitrification tank 1 through a connecting pipe with a one-way valve, and sewage enters the anaerobic tank 2 from the pre-denitrification tank 1; the output end of the anaerobic tank 2 is communicated with the anoxic tank 3 through a connecting pipe with a one-way valve, and sewage enters the anoxic tank 3 from the anaerobic tank 2; a flow impeller 8 is arranged in the pre-denitrification tank 1, a flow impeller 8 is arranged in the anaerobic tank 2, and a flow impeller 8 is arranged in the anoxic tank 3; the output end of the anoxic tank 3 is communicated with a first sedimentation tank 5 through a connecting pipe with a one-way valve, and sewage enters the first sedimentation tank 5 from the anoxic tank 3;
the first sedimentation tank 5 is communicated with the moving biological bed reactor 6 through a connecting pipe with a one-way valve, and sewage enters the moving biological bed reactor 6 from the first sedimentation tank 5; the bottom of the first sedimentation tank 5 is also provided with a first return pipe, and the other end of the first return pipe is communicated with the pre-denitrification tank 1; the first return pipe is provided with a one-way valve and a mud pump, the one-way valve is positioned at a position close to the pre-denitrification tank 1, and the mud pump is positioned at a position close to the first sedimentation tank 5;
The output end of the moving biological bed reactor 6 is communicated with a second sedimentation tank 7 through a connecting pipe of a one-way valve, and sewage enters the second sedimentation tank 7 from the moving biological bed reactor 6; a drain pipe is arranged on the second sedimentation tank 7, and a sludge discharge pipe is arranged at the bottom of the second sedimentation tank 7; a second return pipe is also arranged on the second sedimentation tank 7, and the other end of the second return pipe is communicated with the anoxic tank 3; the second return pipe is provided with a one-way valve and a water pump, the one-way valve is positioned at a position close to the anoxic tank 3, and the water pump is positioned at a position close to the second sedimentation tank 7;
The blowing direction of the first fan 9 faces the aerobic tank 4, and the blowing direction of the second fan 10 faces the moving biological bed reactor 6.
in an alternative embodiment, the first settling tank 5 is of a funnel-like structure.
In an alternative embodiment, the second settling tank 7 is of a funnel-like configuration.
in an alternative embodiment, the density of the packing in the moving bio-bed reactor 6 is similar to the density of water, and the packing can be completely mixed with water during aeration.
in an alternative embodiment, the water outlet end of the moving biological bed reactor 6 is provided with a membrane interception net, which can prevent the moving biological membrane from flowing away with water.
In the utility model, firstly, sewage enters the pre-denitrification tank 1, and the pre-denitrification tank 1 removes nitrate nitrogen in the sewage, thereby reducing the influence on the treatment process in the anaerobic tank 2; then, sewage enters an anaerobic tank 2 from the pre-denitrification tank 1, the anaerobic phosphorus release process is completed in the anaerobic tank 2, and a carbon source is absorbed to synthesize PHB; then the sewage enters an anoxic tank 3 from the anaerobic tank 2, and denitrifying bacteria in the anoxic tank 3 finish denitrification by taking organic matters as electron donors; then the sewage enters an aerobic tank 4 from an anoxic tank 3, and the aerobic tank 4 has the main function of finishing excessive phosphorus accumulation by taking oxygen as an electron acceptor and decomposing PHB synthesized in the anaerobic tank 2; then the sewage enters a first sedimentation tank 5 from the aerobic tank 4, mud-water separation is carried out in the first sedimentation tank 5, a part of sludge flows back to the pre-denitrification tank, and a part of sludge is discharged; then the supernatant enters a moving biological bed reactor 6 from a first sedimentation tank 5, the reactor plays a role in efficiently removing ammonia nitrogen, mainly converting the ammonia nitrogen into nitrate, oxidizing residual COD and the like, finally the effluent of the moving biological bed reactor 6 enters a second sedimentation tank 7, carrying out mud-water separation in the second sedimentation tank 7, returning a part of the supernatant to an anoxic tank 3 for pre-denitrification, and discharging a part of the supernatant;
by arranging the first sedimentation tank 5, the phosphorus-accumulating sludge and the nitrified sludge are separated, sludge can be controlled respectively, a mobile biological bed reactor 6 is adopted for nitration reaction, a novel filler is adopted in the mobile biological bed reactor 6 as a carrier, the biomass is high, the quantity of nitrifying bacteria can be increased, the ammonia nitrogen removal effect is improved obviously, and the ammonia nitrogen can be fully converted into nitrate nitrogen in the mobile biological bed reactor 6, so that a good foundation is laid for removing total nitrogen of the system;
By proper control, the aerobic tank 4 only completes the phosphorus accumulation effect, thereby avoiding the conversion of a large amount of ammonia nitrogen into nitrate nitrogen, reducing the concentration of nitrate in sludge reflux, and in addition, the pre-denitrification tank 1 is added in front of the anaerobic tank 2, and reducing the influence of the reflux nitrate on the anaerobic phosphorus release process;
The collision and shearing action of the carriers in the moving biological bed reactor 6 in water enables air bubbles to be finer, the utilization rate of oxygen is increased, the biomass of each carrier is very high, each carrier is a micro-reactor and mainly performs nitration reaction, and the treatment effect can be effectively improved.
it is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (10)
1. A high-efficiency nitrogen and phosphorus removal sewage treatment system is characterized by comprising a pre-denitrification tank (1), an anaerobic tank (2), an anoxic tank (3), an aerobic tank (4), a first fan (9) and a second fan (10);
The anaerobic tank (2) is positioned between the pre-denitrification tank (1) and the anoxic tank (3); the input end of the anaerobic tank (2) is communicated with the pre-denitrification tank (1) through a connecting pipe with a one-way valve, and sewage enters the anaerobic tank (2) from the pre-denitrification tank (1); the output end of the anaerobic tank (2) is communicated with the anoxic tank (3) through a connecting pipe with a one-way valve, and sewage enters the anoxic tank (3) from the anaerobic tank (2); the output end of the anoxic tank (3) is communicated with a first sedimentation tank (5) through a connecting pipe with a one-way valve, and sewage enters the first sedimentation tank (5) from the anoxic tank (3);
the first sedimentation tank (5) is communicated with the moving biological bed reactor (6) through a connecting pipe with a one-way valve, and sewage enters the moving biological bed reactor (6) from the first sedimentation tank (5); the bottom of the first sedimentation tank (5) is also provided with a first return pipe and a sludge discharge pipe, and the other end of the first return pipe is communicated with the pre-denitrification tank (1);
The output end of the moving biological bed reactor (6) is communicated with a second sedimentation tank (7) through a connecting pipe of a one-way valve, and sewage enters the second sedimentation tank (7) from the moving biological bed reactor (6); a drain pipe is arranged on the second sedimentation tank (7), and a sludge discharge pipe is arranged at the bottom of the second sedimentation tank (7); a second return pipe is also arranged on the second sedimentation tank (7), and the other end of the second return pipe is communicated with the anoxic tank (3);
The blowing direction of the first fan (9) faces the aerobic tank (4), and the blowing direction of the second fan (10) faces the moving biological bed reactor (6).
2. the high efficiency denitrification and dephosphorization wastewater treatment system according to claim 1, wherein a flow impeller (8) is arranged in the pre-denitrification tank (1).
3. The high-efficiency nitrogen and phosphorus removal sewage treatment system according to claim 1, wherein a flow impeller (8) is arranged in the anaerobic tank (2).
4. The high-efficiency nitrogen and phosphorus removal sewage treatment system according to claim 1, wherein a flow impeller (8) is arranged in the anoxic tank (3).
5. the sewage treatment system with high efficiency nitrogen and phosphorus removal as claimed in claim 1, wherein the first sedimentation tank (5) has a funnel-shaped structure.
6. The sewage treatment system with high efficiency of nitrogen and phosphorus removal as claimed in claim 1, wherein the first return pipe is provided with a one-way valve and a sludge pump, the one-way valve is located near the pre-denitrification tank (1), and the sludge pump is located near the first sedimentation tank (5).
7. the sewage treatment system with high efficiency nitrogen and phosphorus removal as claimed in claim 1, wherein the second sedimentation tank (7) is of a funnel-shaped structure.
8. The sewage treatment system with high efficiency nitrogen and phosphorus removal as claimed in claim 1, wherein the second return pipe is provided with a one-way valve and a water pump, the one-way valve is located near the anoxic tank (3), and the water pump is located near the second sedimentation tank (7).
9. The high-efficiency nitrogen and phosphorus removal sewage treatment system according to claim 1, wherein the density of the packing in the moving biological bed reactor (6) is similar to the density of water.
10. The high-efficiency nitrogen and phosphorus removal sewage treatment system according to claim 1, wherein a membrane interception net is arranged at the water outlet end of the moving biological bed reactor (6).
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| CN201920286333.3U CN209740931U (en) | 2019-03-07 | 2019-03-07 | High-efficient nitrogen and phosphorus removal sewage treatment system |
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| CN201920286333.3U CN209740931U (en) | 2019-03-07 | 2019-03-07 | High-efficient nitrogen and phosphorus removal sewage treatment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109809639A (en) * | 2019-03-07 | 2019-05-28 | 合肥格讯环保技术有限公司 | A kind of high-efficient denitrification and dephosphorization sewage disposal system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109809639A (en) * | 2019-03-07 | 2019-05-28 | 合肥格讯环保技术有限公司 | A kind of high-efficient denitrification and dephosphorization sewage disposal system |
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