CN215756671U - Large-scale synchronous denitrification system of sewage - Google Patents
Large-scale synchronous denitrification system of sewage Download PDFInfo
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- CN215756671U CN215756671U CN202121580350.1U CN202121580350U CN215756671U CN 215756671 U CN215756671 U CN 215756671U CN 202121580350 U CN202121580350 U CN 202121580350U CN 215756671 U CN215756671 U CN 215756671U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The utility model relates to the technical field of municipal sewage treatment denitrification, and discloses a large-scale synchronous sewage denitrification system, which comprises an aeration system, a control system, a submersible water impeller, a control instrument, a biochemical reaction tank, a selection tank, a water inlet and a water outlet; an integrated aeration device, a flow guide wall, a round chamfer angle and a submersible water impeller are arranged in the biochemical reaction tank; the aeration system is provided with an air blower, an aeration pipeline and an integrated aeration device. The biochemical reaction tank can realize the nitration and the denitrification in one tank, the design effectively solves the problem that the total nitrogen removal rate of the traditional AO process is limited by the reflux ratio, the total nitrogen removal rate is greatly improved, an internal reflux system is not needed, a single biochemical reaction tank can process sewage of 5 ten thousand square/day at most, and the energy consumption and the investment can be greatly saved; the utility model has good effect on municipal sewage treatment, small floor area, large treatment capacity and simple operation.
Description
Technical Field
The utility model relates to the technical field of municipal sewage treatment denitrification, in particular to a large-scale synchronous sewage denitrification system.
Background
With the development of cities, the amount of sewage generated in the production and living process is increasing. The existing sewage treatment technology generally adopts an AO or AAO process, and nitrification and denitrification reactions are carried out step by step to remove the total nitrogen. Because the two reaction processes are respectively completed in two reactors with different reaction conditions, and the nitrified liquid which completes the nitration reaction is sent to the denitrification reactor in a reflux mode, a complete denitrification process can be completed. No matter how large the reflux is, the denitrification of the nitrifying liquid in the nitrifying tank can not be completely realized, so that the total nitrogen removal rate of the prior art can not be continuously improved.
Because a plurality of different reactors are needed, the number of tanks is large, the number of electromechanical devices is large, the operation is complex, the occupied area is large, a construction period plant is built, the investment cost is high, the energy consumption is high, and the operation cost is high, a system which is small in occupied area and high in treatment efficiency is needed to be developed to meet the requirements.
Therefore, a large-scale sewage synchronous denitrification system is provided.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the background art, the utility model provides a large-scale sewage synchronous denitrification system, which solves the problems in the background art.
The utility model provides the following technical scheme: a large-scale sewage synchronous denitrification system comprises an aeration system, a control system, a submersible water impeller, a control instrument, a biochemical reaction tank, a water inlet, a selection tank and a water outlet, wherein an integrated aeration device, a flow guide wall, a round chamfer and the submersible water impeller are arranged in the biochemical reaction tank;
the aeration system is provided with an air blower, an aeration pipeline and an integrated aeration device, and the air blower is communicated with the integrated aeration device in the biochemical reaction tank through the aeration pipeline;
the control instrument is provided with an oxidation-reduction potentiometer and a dissolved oxygen instrument;
the control system is provided with a PLC (programmable logic controller), a human-computer interface control, a signal collection and a remote monitoring control;
the selective tank is provided with a water inlet and a flow impeller.
Preferably, the integrated aeration device is of a bracket type or suspension type structure and is arranged at the middle lower part of the pool, and an air inlet of the integrated aeration device is connected with an aeration pipeline through a valve.
Preferably, the submersible water impeller is a submersible adjustable water impeller, and the service width of a single submersible water impeller is 6-7 m.
Preferably, the control instrument is an oxidation-reduction potentiometer and a dissolved oxygen meter which are arranged at a position 1-5 meters near the water outlet of the biochemical reaction tank, and a measurement signal is transmitted to be connected with the control system through a transmitter and a cable.
Preferably, the biochemical reaction tank is of a concrete structure or a metal structure, and is provided with an overhaul channel, and the submersible water impeller, the flow guide wall and the round chamfer angle are designed and arranged according to flow field calculation, so that sewage can circularly and repeatedly flow in the channel.
Preferably, the selection pool is of a concrete structure or a metal structure and is provided with a return sludge pipeline, and sewage and return sludge can be fully mixed under the stirring action of the flow pushing device.
Preferably, the water inlet is connected with a pipeline of the conventional pretreatment process, and the water outlet is connected with a subsequent water pool of the conventional process.
Preferably, the synchronous denitrification system can realize the completion of nitrification and denitrification reactions in one biochemical reaction tank.
The utility model has the following beneficial effects: the large-scale sewage synchronous denitrification system is characterized in that an aeration system, a control system, a dissolved oxygen instrument and an oxidation-reduction potential instrument are simultaneously arranged in a biochemical reaction tank, measurement data of the dissolved oxygen instrument and the oxidation-reduction potential instrument are transmitted to the control system during working, the control system controls an air blower, a submersible impeller and other equipment through logical operation, the air blower achieves accurate aeration according to requirements and moderate plug flow strength, a synchronous denitrification environment is maintained, and nitrification and denitrification reactions are completed in the biochemical reaction tank. The method effectively breaks through the limitation that the total nitrogen removal rate of the conventional AO and AAO process is limited by the reflux ratio, greatly improves the total nitrogen removal rate, and simultaneously saves energy consumption and investment cost because the process does not need an internal reflux system.
And secondly, a flow impeller, a flow guide wall and the like are arranged in the biochemical reaction tank, so that the sewage is repeatedly circulated in the channel, the retention time is prolonged, the utilization rate of the dissolved oxygen in the optimal flow state of the sewage is more efficient, and the denitrification reaction efficiency is improved. And the occupied area of the biochemical reaction tank can be effectively saved, and the construction cost can be greatly saved.
Through the two modes, the synchronous denitrification can be effectively realized.
Drawings
FIG. 1 is a schematic plan view of a large-scale synchronous denitrification system for sewage according to the present invention;
in the figure: 1-a blower; 2-a control system; 3-an aeration pipeline; 4-an integrated aeration device; 5-diving flow driver; 6-biochemical reaction tank; 7-a water inlet; 8-selecting a pool; 9-a flow pusher; 10-round chamfering; 11-guide walls; 12-a water outlet; 13-oxidation-reduction potentiometer; 14-dissolved oxygen instrument; 15-maintenance passage.
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.
The drawings in the embodiments of the utility model: the different types of hatching in the figures are not given the national standards, do not require the material of the elements, and distinguish between cross-sectional views of the elements in the figures.
Referring to fig. 1, a large-scale sewage synchronous denitrification system comprises an aeration system, a control system 2, a submersible water impeller 5, a control instrument, a biochemical reaction tank 6, a water inlet 7, a selection tank 8 and a water outlet 12, and is characterized in that: the biochemical reaction tank 6 is internally provided with an integrated aeration device 4, a flow guide wall 11, a round chamfer 10 and a submersible water impeller 5;
the aeration system is provided with an air blower 1, an aeration pipeline 3 and an integrated aeration device 4, wherein the air blower 1 is communicated with the integrated aeration device 4 in the biochemical reaction tank 6 through the aeration pipeline 3;
the control instrument is provided with an oxidation-reduction potentiometer 13 and a dissolved oxygen meter 14;
the control system 2 is provided with a PLC programmable controller, a human-computer interface control device, a signal collection device and a remote monitoring control device;
the selective tank 8 is provided with a water inlet 7 and a flow pusher 9.
Wherein, the integrated aeration device 4 is arranged at the middle lower part of the pool in a bracket type or suspension type structure, and the air inlet of the integrated aeration device 4 is connected with the aeration pipeline 3 through a valve.
Wherein, the diving flow impeller 5 is a diving adjustable flow impeller, and the service width of a single unit is 6-7 meters.
Wherein, the control instrument is provided with an oxidation-reduction potential instrument 13 and a dissolved oxygen instrument 14 at a position 1-5 meters near the water outlet of the biochemical reaction tank 6, and a measurement signal is transmitted by a transmitter through a cable and is connected with the control system 2.
The biochemical reaction tank 6 is of a concrete structure and a metal structure, and is provided with an overhaul channel 15, and the submersible water impeller 5, the guide wall 11 and the round chamfer 10 are designed and arranged according to flow field calculation, so that sewage can circularly flow in the channel in a reciprocating manner.
Wherein, the selective tank 8 is of a concrete structure and a metal structure and is provided with a return sludge pipeline, and the sewage and the return sludge can be fully mixed under the stirring action of the flow pushing device 9.
Wherein the water inlet 7 is connected with a conventional pretreatment process pipeline, and the water outlet 12 is connected with a subsequent water pool of a conventional process.
Wherein, the synchronous denitrification system can realize the completion of nitrification and denitrification reactions in one biochemical reaction tank 6.
In the large-scale synchronous sewage denitrification system, the bracket type integrated aeration device 4 is arranged at the lower part of the biochemical reaction tank 6, and the air blower 1 sends air to the integrated aeration device 4 through the aeration pipeline 3 so as to uniformly diffuse into water. According to the width design of the biochemical reaction tank 6, a single submersible water impeller 5 with service width of 6-7 m is arranged, and a plurality of submersible water impellers 5 are combined for use according to calculation. When the device works, the plurality of flow impellers work in a coordinated manner to forcibly circulate, so that the sewage in the biochemical reaction tank can reach the optimum stirring effect and is in the optimum flow state, and the denitrification efficiency is improved. The impeller is of common general knowledge in the art and is used only without modification.
Meanwhile, an oxidation-reduction potential meter 13 and a dissolved oxygen meter 14 are arranged at a position 1-5 meters near the water outlet of the biochemical reaction tank 6, and measurement signals are transmitted to the control system 2 through a transmitter and a cable. The control system 2 controls or regulates the blower 1 as a function of the instrument signals. The control circuit inside the control system 2 can be implemented by simple programming by a person skilled in the art, and is known in the art and is used only for this purpose.
The water inlet 7 is connected with a conventional pretreatment process pipeline; the selective tank 8 is provided with a sludge return pipeline, and sewage and sludge can be returned and fully mixed through the flow impeller 9; the water outlet 12 is connected with a subsequent water pool of the conventional process.
And the biochemical reaction tank 6 is of a concrete structure and a metal structure, and an overhaul channel 15 is arranged at the top and a necessary overhaul position. The submersible water impeller 5, the guide wall 11 and the round chamfer 10 arranged in the biochemical reaction tank 6 can make sewage circularly flow in the channel in a reciprocating way.
It should be noted that in a large-scale synchronous denitrification system for sewage, the control system 2 makes the blower 1 achieve accurate aeration as required, and the submersible water impeller 5 and the integrated aeration device 4 make the sewage in a completely mixed state, so as to construct a synchronous denitrification environment. The sewage is subjected to nitrification and denitrification reactions in the environment, and finally synchronous denitrification is realized.
The effective volume of the biochemical reaction tank 6 can be 2.5 ten thousand cubic, and 5 ten thousand cubic sewage can be treated daily. Multiple sets of biochemical reaction tanks 6 can be used in parallel, and sewage of 20-50 ten thousand square can be treated daily. Effectively reduces the occupied area of the biochemical reaction tank and can greatly save the construction cost.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a synchronous denitrogenation system of large-scale sewage, includes aeration systems, control system (2), dive impeller (5), control instrument, biochemical reaction pond (6), water inlet (7), selects pond (8), delivery port (12), its characterized in that: an integrated aeration device (4), a guide wall (11), a round chamfer angle (10) and a submersible water impeller (5) are arranged in the biochemical reaction tank (6);
the aeration system is provided with an air blower (1), an aeration pipeline (3) and an integrated aeration device (4), wherein the air blower (1) is communicated with the integrated aeration device (4) in the biochemical reaction tank (6) through the aeration pipeline (3);
the control instrument is provided with an oxidation-reduction potentiometer (13) and a dissolved oxygen meter (14);
the control system (2) is provided with a PLC programmable controller, a human-computer interface control device, a signal collection device and a remote monitoring control device;
the selective tank (8) is provided with a water inlet (7) and a flow pusher (9).
2. The large-scale synchronous denitrification system for sewage as claimed in claim 1, wherein: the integrated aeration device (4) is of a bracket type or suspension type structure and is arranged at the middle lower part of the pool, and the air inlet of the integrated aeration device (4) is connected with the aeration pipeline (3) through a valve.
3. The large-scale synchronous denitrification system for sewage as claimed in claim 1, wherein: the submersible water impeller (5) is a submersible adjustable water impeller, and the service width of a single submersible water impeller is 6-7 m.
4. The large-scale synchronous denitrification system for sewage as claimed in claim 1, wherein: the control instrument is characterized in that an oxidation-reduction potential instrument (13) and a dissolved oxygen instrument (14) are arranged at a position 1-5 meters near a water outlet of the biochemical reaction tank (6), and a measurement signal is transmitted through a transmitter and is connected with the control system (2) through a cable.
5. The large-scale synchronous denitrification system for sewage as claimed in claim 1, wherein: the biochemical reaction tank (6) is of a concrete structure and a metal structure, is provided with an overhaul channel (15), and can make sewage circularly flow in the channel in a reciprocating way according to a submersible water impeller (5), a flow guide wall (11) and a round chamfer (10) which are designed and arranged according to flow field calculation.
6. The large-scale synchronous denitrification system for sewage as claimed in claim 1, wherein: the selective tank (8) is of a concrete structure and a metal structure, is provided with a return sludge pipeline, and can fully mix sewage and return sludge under the stirring action of the flow impeller (9).
7. The large-scale synchronous denitrification system for sewage as claimed in claim 1, wherein: the water inlet (7) is connected with a conventional pretreatment process pipeline, and the water outlet (12) is connected with a subsequent water pool of a conventional process.
8. The large-scale synchronous denitrification system for sewage as claimed in claim 1, wherein: the synchronous denitrification system can realize the completion of nitrification and denitrification reactions in one biochemical reaction tank (6).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121580350.1U CN215756671U (en) | 2021-07-13 | 2021-07-13 | Large-scale synchronous denitrification system of sewage |
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| CN202121580350.1U CN215756671U (en) | 2021-07-13 | 2021-07-13 | Large-scale synchronous denitrification system of sewage |
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| CN215756671U true CN215756671U (en) | 2022-02-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116253435A (en) * | 2023-03-10 | 2023-06-13 | 中麒水务科技(深圳)有限公司 | Sewage treatment system and process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116253435A (en) * | 2023-03-10 | 2023-06-13 | 中麒水务科技(深圳)有限公司 | Sewage treatment system and process thereof |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230605 Address after: Zone 3-5, 3rd Floor, No. 218 Shugang Avenue, Aotou, Daya Bay, Huizhou City, Guangdong Province, 516000 Patentee after: Guangdong Huaqing Double Carbon Environmental Technology Co.,Ltd. Patentee after: Zhongqi water technology (Shenzhen) Co.,Ltd. Address before: 518102 business building 1609, building a, yonghuayuan, No. 6, Baotian Second Road, chentian community, Xixiang street, Bao'an District, Shenzhen, Guangdong Patentee before: Zhongqi water technology (Shenzhen) Co.,Ltd. |
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| TR01 | Transfer of patent right |