CN212293020U - Intermittent aeration control device of sewage plant - Google Patents
Intermittent aeration control device of sewage plant Download PDFInfo
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- CN212293020U CN212293020U CN202020854481.3U CN202020854481U CN212293020U CN 212293020 U CN212293020 U CN 212293020U CN 202020854481 U CN202020854481 U CN 202020854481U CN 212293020 U CN212293020 U CN 212293020U
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
An intermittent aeration control device of a sewage plant belongs to the field of sewage treatment, and comprises a water inlet quality instrument, a comprehensive control device, an aerobic biological treatment unit and an air blower. A COD online detector, an ammonia nitrogen online detector and a flowmeter are arranged on an inlet pipeline of the aerobic biological treatment unit; the aerobic biological treatment unit is divided into aeration areas I, II and III, wherein the aeration area I is provided with a Dissolved Oxygen (DO) instrument, the aeration area II is provided with an on-line detector for respiration oxygen consumption rate (OUR) and an on-line detector for oxygen transfer efficiency, and the aeration area III is provided with a Dissolved Oxygen (DO) instrument and an on-line detector for ammonia nitrogen; each aeration area is internally provided with an aeration head, an aeration branch pipe and an aeration main pipe; each aeration branch pipe is provided with 4 pneumatic valves, and the total number of the pneumatic valves is 12; the aeration main pipe is provided with 3 manual valves. The online instrument can transmit the collected information to the comprehensive control device; the comprehensive control device controls the work of the blower and the pneumatic valve.
Description
Technical Field
The utility model relates to an intermittent aeration control device of sewage factory especially relates to the aeration control of air-blower.
Background
The sewage treatment is a key means for solving the shortage of water resources at present, domestic sewage treatment plants develop rapidly in recent years, the sewage treatment belongs to the energy-intensive industry, and the electricity consumption in the direct energy consumption accounts for about 60-90%. Under the background of global green and low-carbon development, energy conservation and consumption reduction of the sewage treatment industry are developed on a large scale. The aeration system is also the largest energy consumption unit of the sewage treatment plant, and the energy consumption for aeration accounts for more than 50 percent of the total electricity consumption of the whole sewage treatment plant. Aeration is the core of the whole sewage treatment process, and can provide proper dissolved oxygen for the processes of removing organic carbon, nitrifying, absorbing phosphorus and the like. If the aeration quantity of the biological tank is not enough, the nitration reaction is incomplete, and the ammonia nitrogen in the effluent is easy to exceed the standard; if the aeration quantity is excessive, the dissolved oxygen in the water can inhibit the denitrification through the internal reflux, so that the denitrification effect is not ideal, the energy consumption is increased, and the energy waste is caused. At present, domestic sewage plants generally have the defects of high aeration energy consumption, extensive control and the like. Therefore, the development of an aeration control device and the accurate adjustment of an aeration system are very important.
Disclosure of Invention
To the above problem, the utility model aims at providing an intermittent type aeration controlling means of sewage factory, its intermittent type that can realize aeration system adjusts, under the stable up to standard prerequisite of guaranteeing out water ammonia nitrogen, reduces the air-blower energy consumption.
In order to realize the purpose, the utility model adopts the following technical proposal that the intermittent aeration control device of the sewage plant is characterized in that: an intermittent aeration control device for a sewage plant is characterized by comprising a water inlet quality instrument, a comprehensive control device, an aerobic biological treatment unit and an air blower.
The water inlet quality instrument comprises a COD (chemical oxygen demand) online detector, an ammonia nitrogen online detector and a flowmeter, and information monitored by the online instrument is transmitted to the comprehensive control device. The aerobic biological treatment unit is divided into aeration areas I, II and III; each aeration area is internally provided with an aeration head, an aeration branch pipe and an aeration main pipe; each aeration branch pipe is provided with 4 pneumatic valves, and the total number of the pneumatic valves is 12; the aeration main pipe is provided with 3 manual valves. The 12 pneumatic valves are divided into 2 groups, and 8 pneumatic valves in the aeration areas I and II are divided into one group, namely an oxygen dissolving control group; 4 pneumatic valves in the aeration area III form a group, namely an ammonia nitrogen control group. A Dissolved Oxygen (DO) instrument is arranged in an aeration area I, an oxygen consumption rate (OUR) on-line detector and an oxygen transfer efficiency on-line detector are arranged in an aeration area II, a Dissolved Oxygen (DO) instrument and an ammonia nitrogen on-line detector are arranged in an aeration area III, and information monitored by the on-line instruments is transmitted to the comprehensive control device. And a gas flow meter is arranged on an aeration main pipe connected with the blower. The comprehensive control device comprises an online data analysis module, a dissolved oxygen-valve control module, an ammonia nitrogen-valve control module and a blower control module. The online data analysis module is used for collecting the inflow water volume, the inflow COD concentration value, the inflow ammonia nitrogen concentration value, the aerobic biological unit ammonia nitrogen concentration value, the dissolved oxygen value, the respiration oxygen consumption rate value, the oxygen transfer efficiency value and the gas flow value; the dissolved oxygen-valve control module receives the data of the online data analysis module, outputs a control signal after analyzing the data and controls the operation of a pneumatic valve of the dissolved oxygen control group; the ammonia nitrogen-valve control module receives the data of the online data analysis module, outputs a control signal after analyzing the data and controls the ammonia nitrogen control group pneumatic valve to work. And the blower control module receives the data of the dissolved oxygen-valve control module and the ammonia nitrogen-valve control module, outputs a control signal after comprehensive analysis and controls the work of the blower.
Drawings
FIG. 1 is a schematic view of the overall structure of the device of the present invention, in which
Indicates that the sewage treatment process is over
The process is carried out by the following steps,
the control signal of the watch table is displayed,
which represents the sampling process of the instrument and meter,
showing an aeration tube.
Detailed Description
The utility model relates to a sewage plant aeration control device based on neural network. Aeration is one of the important links of sewage treatment plants, and directly influences the sewage treatment effect. If the aeration quantity of the biological tank is not enough, the nitration reaction is incomplete, and the ammonia nitrogen in the effluent is easy to exceed the standard; if the aeration quantity is excessive, the dissolved oxygen in the water can inhibit the denitrification through the internal reflux, so that the denitrification effect is not ideal, the energy consumption is increased, and the energy waste is caused.
The method is applied to an AAO device, the device operation condition is that the sludge concentration is set to be 2500-; the internal reflux proportion is 200%; the external reflux ratio was 75%. The device process flow and the control system are schematically shown in the attached figure 1.
In the implementation process, the intermittent aeration control device for the sewage plant is characterized by comprising a water inlet quality instrument 1, a comprehensive control device 7, an aerobic biological treatment unit 2 and an air blower 8.
The influent water quality instrument 1 comprises a COD online detector 1.1, an ammonia nitrogen online detector 1.2 and a flowmeter 1.3, and information monitored by the online instruments is transmitted to the integrated control device 7. The aerobic biological treatment unit 2 is divided into aeration areas I, II and III; each aeration area is internally provided with an aeration head, an aeration branch pipe and an aeration main pipe; each aeration branch pipe is provided with 4 pneumatic valves, and the total number of the pneumatic valves is 12, namely 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 3.10, 3.11 and 3.12; 3 manual valves 3.13, 3.14 and 3.15 are arranged on the aeration main pipe. The 12 pneumatic valves are divided into 2 groups, and 8 pneumatic valves in the aeration areas I and II are 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7 and 3.8, namely, dissolved oxygen control groups; 4 pneumatic valves 3.9, 3.10, 3.11 and 3.12 of the aeration zone III form a group, namely an ammonia nitrogen control group. In the aerobic biological treatment unit, a Dissolved Oxygen (DO) instrument 1.4 is arranged in an aeration area I, an on-line detector 1.6 for respiration oxygen consumption rate (OUR) and an on-line detector 1.7 for oxygen transfer efficiency are arranged in an aeration area II, a Dissolved Oxygen (DO) instrument 1.5 and an on-line detector 1.8 for ammonia nitrogen are arranged in an aeration area III, and information monitored by the on-line instrument is transmitted to the comprehensive control device 7. And a gas flow meter 8.1 is arranged on an aeration main pipe connected with the blower 8. The comprehensive control device 7 comprises an online data analysis module 3, a dissolved oxygen-valve control module 4, an ammonia nitrogen-valve control module 5 and a blower control module 6. The online data analysis module 3 collects the inflow water volume, the inflow COD concentration value, the inflow ammonia nitrogen concentration value, the aerobic biological unit ammonia nitrogen concentration value, the dissolved oxygen value, the respiration oxygen consumption rate value, the oxygen transfer efficiency value and the gas flow value; the dissolved oxygen-valve control module 4 receives the data of the online data analysis module 3, outputs a control signal after analyzing the data and controls the operation of the dissolved oxygen control group pneumatic valve; the ammonia nitrogen-valve control module 5 receives the data of the online data analysis module 3, outputs a control signal after analyzing the data, and controls the ammonia nitrogen control group pneumatic valve to work. And the blower control module 6 receives the data of the dissolved oxygen-valve control module 4 and the ammonia nitrogen-valve control module 5, outputs a control signal after comprehensive analysis and controls the work of the blower 8.
Claims (1)
1. An intermittent aeration control device of a sewage plant is characterized in that: comprises a water inlet quality meter, a comprehensive control device, an aerobic biological treatment unit and a blower;
the water inlet quality instrument comprises a COD (chemical oxygen demand) online detector, an ammonia nitrogen online detector and a flowmeter, and the online instrument is connected with the comprehensive control device;
the aerobic biological treatment unit is divided into aeration areas I, II and III; each aeration area is internally provided with an aeration head, an aeration branch pipe and an aeration main pipe; each aeration branch pipe is provided with 4 pneumatic valves, and the total number of the pneumatic valves is 12; 3 manual valves are arranged on the aeration main pipe;
the 12 pneumatic valves are divided into 2 groups, and 8 pneumatic valves in the aeration areas I and II are divided into one group, namely an oxygen dissolving control group; 4 pneumatic valves in the aeration area III form a group, namely an ammonia nitrogen control group;
an aeration area I in the aerobic biological treatment unit is provided with a dissolved oxygen meter, an aeration area II is provided with an on-line detector for respiration oxygen consumption rate and an on-line detector for oxygen transfer efficiency, and an aeration area III is provided with a dissolved oxygen meter and an on-line detector for ammonia nitrogen;
and a gas flowmeter is arranged on an aeration main pipe connected with the blower.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020854481.3U CN212293020U (en) | 2020-05-21 | 2020-05-21 | Intermittent aeration control device of sewage plant |
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| CN202020854481.3U CN212293020U (en) | 2020-05-21 | 2020-05-21 | Intermittent aeration control device of sewage plant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114291911A (en) * | 2021-12-20 | 2022-04-08 | 安徽泛湖生态科技股份有限公司 | Sewage aeration control method based on oxygen transfer efficiency |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114291911A (en) * | 2021-12-20 | 2022-04-08 | 安徽泛湖生态科技股份有限公司 | Sewage aeration control method based on oxygen transfer efficiency |
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