CN205665573U - A accurate aeration control system for biological pond of AAO - Google Patents
A accurate aeration control system for biological pond of AAO Download PDFInfo
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- CN205665573U CN205665573U CN201620557072.0U CN201620557072U CN205665573U CN 205665573 U CN205665573 U CN 205665573U CN 201620557072 U CN201620557072 U CN 201620557072U CN 205665573 U CN205665573 U CN 205665573U
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- aao
- instrument
- control system
- biological tank
- aerator
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Abstract
The utility model discloses an accurate aeration control system for biological pond of AAO, including mechanical floor, automatic layer and intelligent monitoring layer, the mechanical floor includes the biological pond of AAO, the sedimentation tank, governing valve and air -blower, automatic layer is including intaking the instrument, biological pond instrument, go out the water instrument, a frequency converter, a motor, a crankshaft position sensor, a switching power supply and a digital frequency meter, 4 20mA output module and PLC control system, intelligence monitoring layer includes host computer monitoring system, the parameter input, AAO process simulation and bottom aeration equipment emulation, the biological pond of AAO process simulation model is according to intaking quality of water, the change dynamic calculation oxygen demand of dissolved oxygen in the biological pond of inflow and AAO, the accurate control parameter of air -blower is calculated by bottom aeration equipment emulation, thereby make the biological pond of AAO be in the optimum, it reaches set sewage discharge standard to go out water, thereby reduce the power consumption of rotary drum fan, practice thrift the operation cost.
Description
Technical field
This utility model relates to municipal sewage treatment automation field, is specifically related to a kind of essence for AAO biological tank
Really aeration control system.
Background technology
In sewage treatment process, AAO method is a kind of comparative maturity, stable biological treatment, has simultaneous denitrification
Dephosphorization ability, hydraulic detention time are short, technique overall operation energy consumption is low, relatively low to water quality strong adaptability, capital construction and operating cost,
The features such as maintenance management is easy to operate, operation is simple, become one of sewage disposal technology that China is most widely used, mainly by
Anaerobism section, anoxia section and aerobic section composition, raw sewage enters bioselection section together with returned sludge, carries out muddy water conjunction and biology
Preferred mutually, enter after anaerobism section realizes the release of phosphorus and enter anoxia section, before nitrification liquid is by inner circulating reflux to anoxia section, scarce
Entering aerobic section after completing denitrification denitrogenation in oxygen conversion zone, the absorption realizing BOD removal, nitrification and phosphorus in aerobic reaction section is gone
Remove.
Typical sewage treatment process includes coarse rack, Boosting pumping station, fine fack, setting pot, preliminary sedimentation tank, biochemical treatment
Section, second pond and specific resistance to filtration unit etc., AAO technique just belongs to biochemical treatment section.Power consumption master in municipal sewage plant
There is oxygen system, sewage lifting system and sludge treating system three part, wherein secondary biochemical in secondary biochemical treatment
The energy consumption of processing unit is concentrated mainly in aerator, agitator and interior external reflux pump, and aerator accounts for total operation power consumption
More than 51.8%, it is topmost power consumption unit.
The biological treatment process of AAO technique has the feature, the most still neither one such as uncertainty, non-linear, time variation
Mathematical model its course of reaction can accurately be described, there is no directly to reflect the sensing of the water quality parameter of processing procedure simultaneously yet
Device.Current China's major part AO and AAO Designing Sewage Treatment Plant run link in sewage pump, aeration, backflow etc. and use definite value to set
Putting, and the actual sewage no matter water yield or water quality all change in the moment, constant sewage pump power, aeration run with backflow and control
Do not match that with it, thus it is up to standard to cause energy dissipation or effluent quality to be difficult to.This is accomplished by one can tackle the dynamic water yield, water
The operation of qualitative change controls technology, makes aeration rate, capacity of returns and the water yield, water quality real-time matching.
Summary of the invention
In order to preferably solve problem above, this utility model provides a kind of accurate aeration control for AAO biological tank
System processed, can realize the dynamic analysis of AAO biological tank aeration oxygen demand, according to bottom aerator characteristic, can realize air blast
Machine and the accurate control of electrically operated valve, the optimization that finally can realize bio-aeration runs, and water outlet reaches set sewage discharge mark
Standard, thus reduce the power consumption of rotary drum blower fan, save operation cost.
For achieving the above object, technology contents of the present utility model is described below:
A kind of accurate aeration control system for AAO biological tank, including mechanical floor, automation layer and intelligent monitoring layer；
Mechanical floor includes AAO biological tank, sedimentation tank, regulation valve and aerator, and municipal sewage passes sequentially through at AAO biological tank and sedimentation tank
Discharging from sedimentation tank after reason, regulation valve is connected with AAO biological tank, and aerator is connected with regulation valve；
Automation layer includes controlling system into water instrument, biological tank instrument, water outlet instrument, converter, 4-20MA output and PLC
Uniting, water inlet instrument, biological tank instrument, water outlet instrument, converter, 4-20MA output are all connected with PLC control system, instrument of intaking
Table is for monitoring COD, NH3 of water inlet and the flow of inlet water of municipal sewage, and biological tank instrument is molten for monitor in AAO biological tank
Solve oxygen and turbidity, aeration house steward and the gas flow of aeration branch pipe and gas pressure, water outlet instrument for monitor draining COD,
NH3 and drain discharge, converter changes the air output of aerator by regulation running frequency, and PLC control system passes through 4-
20MA output changes the opening degree of regulation valve and changes intake；
Intelligent monitoring layer includes the input of Monitor Computer Control System, parameter, AAO process simulation and the emulation of bottom aerator,
Monitor Computer Control System is used for acquisition instrument data and equipment state, and is responsible for imitating with AAO process simulation and bottom aerator
Really carrying out data exchange, it is achieved the optimization of aerator runs, parameter input is for arranging the technological parameter of AAO biological tank, air blast
The device parameter of machine and aerating pipelines parameter, AAO process simulation and bottom aerator emulate the data according to instrument and parameter
Dynamically analyze AAO biological tank process operation state, regulate the operational factor of equipment in real time.
Preferably, described AAO process simulation is setting according to influent COD, water inlet NH3, flow of inlet water and AAO biological tank
Meter parameter carrys out dynamic calculation oxygen demand.
Preferably, described bottom aerator emulation is according to oxygen demand parameter, aeration house steward and the gas of aeration branch pipe
Body flow and calculation of pressure need aeration rate, and are converted into rotating speed, by Monitor Computer Control System, rotating speed are downloaded to aerator
Converter in.
Preferably, the Parameters Transformation that bottom aerator emulates is become 4-20MA signal to be transferred to by described 4-20MA output
In the electrically operated valve of regulation valve.
Preferably, described biological tank instrument includes being arranged on the gas flow above aeration house steward and every aeration branch pipe
Sensor and gas pressure sensor.
Compared with prior art, the beneficial effects of the utility model are:
This utility model is based on the accurate control of aerator bottom AAO process simulation and bottom aerator the Realization of Simulation
System, AAO process simulation is according to the change dynamic calculation oxygen demand of dissolved oxygen in influent quality, inflow and biological tank, by bottom
What aerator simulation calculation went out aerator accurately controls parameter, so that AAO biological tank is at one's best, improves and water quality
Amount, owing to having analyzed the aeration rate of reality, and carries out Collaborative Control with aerator, compares other fixing quantity technology, permissible
Save aeration consumption to greatest extent, cuts operating costs.
Accompanying drawing explanation
Fig. 1 is control system figure of the present utility model.
Detailed description of the invention
The technical solution adopted in the utility model is according to the change of dissolved oxygen in influent quality, inflow and AAO biological tank
Change the oxygen demand of dynamic calculation AAO biological tank, then according to bottom aerator characteristic and aeration branch pipe distribution situation, calculate
Optimal operational factor, meets the oxygen demand of AAO biological tank, finally makes biological tank be in optimal running status, based on imitative
The aerating system structure chart of true mode is as shown in Figure 1.
Mainly it is made up of three-decker in FIG: mechanical floor, automation layer and intelligent monitoring layer.
Mechanical floor includes AAO biological tank, sedimentation tank, regulation valve and aerator, municipal sewage pass sequentially through AAO biological tank and
Sedimentation tank is discharged from sedimentation tank after processing, and regulation valve is connected with AAO biological tank, and aerator is connected with regulation valve；Mechanical floor is main
Being aerator and aeration house steward and aeration branch pipe, aerator connects converter, has frequency conversion function, can come by changing frequency
Regulation aeration supply, the air inlet of each aeration house steward and aeration branch pipe is respectively mounted regulation valve, can be made by regulation valve
Aeration in AAO biological tank is uniformly distributed.
Automation layer includes controlling system into water instrument, biological tank instrument, water outlet instrument, converter, 4-20MA output and PLC
System, water inlet instrument, biological tank instrument, water outlet instrument, converter, 4-20MA output all control system with PLC and are connected.Water inlet instrument is used
In the detection COD of water inlet of municipal sewage, NH3, flow of inlet water, biological tank instrument is for monitoring the dissolved oxygen in AAO biological tank
With turbidity, aeration house steward and the gas flow of aeration branch pipe and gas pressure, water outlet instrument is for monitoring the draining of sedimentation tank
COD, NH3 and drain discharge, converter changes the air output of aerator by regulation running frequency, and 4-20MA exports by changing
The opening degree of modified tone joint valve changes intake, and PLC control system gathers all of instrumented data and the state parameter of equipment, and
Realize the process control of equipment, then communicated by fieldbus and Monitor Computer Control System.
Intelligent monitoring layer includes the input of Monitor Computer Control System, parameter, AAO process simulation and the emulation of bottom aerator,
Monitor Computer Control System completes the management to AAO biological tank, scheduling, centralized operation, supervision, systemic-function configuration, controls parameter
Function, AAO process simulation and the bottom aerations such as online modification and setting, record, report generation and printing, fault alarm and printing
Device emulation realizes the data with Monitor Computer Control System by ActiveX control and exchanges, and system is transferred in the timing of AAO process simulation
In instrumented data and technological parameter, dynamically analyze the aeration oxygen demand of AAO biological tank, bottom aerator emulates according to aeration
Calculation of oxygen demand goes out the operational factor of equipment, then by ActiveX control, the operational factor of equipment is transferred to host computer and supervises
Ore-controlling Role, is converted into the running frequency of aerator and the folding amount of electrically operated valve.Parameter input is used for arranging AAO biological tank technique
Parameter, the device parameter of aerator and aerating pipelines parameter, and be saved in inside Monitor Computer Control System.
Certainly described above is not limitation of the utility model, and this utility model is also not limited to the example above, this skill
Change that the those of ordinary skill in art field is made in essential scope of the present utility model, retrofit, add or replace, also belong to
In protection domain of the present utility model.
Claims (5)
1. the accurate aeration control system for AAO biological tank, it is characterised in that include mechanical floor, automation layer and intelligence
Can supervisory layers；Mechanical floor includes AAO biological tank, sedimentation tank, regulation valve and aerator, and municipal sewage passes sequentially through AAO biological tank
Discharging from sedimentation tank after processing with sedimentation tank, regulation valve is connected with AAO biological tank, and aerator is connected with regulation valve；
Automation layer includes into water instrument, biological tank instrument, water outlet instrument, converter, 4-20MA output and PLC control system,
Water inlet instrument, biological tank instrument, water outlet instrument, converter, 4-20MA output are all connected with PLC control system；Water inlet instrument is used
In COD, NH3 of water inlet and the flow of inlet water of monitoring municipal sewage, biological tank instrument is for monitoring the dissolved oxygen in AAO biological tank
And turbidity, aeration house steward and the gas flow of aeration branch pipe and gas pressure；Water outlet instrument for monitor draining COD, NH3 and
Drain discharge；Converter changes the air output of aerator by regulation running frequency；PLC control system is exported by 4-20MA
The opening degree changing regulation valve changes intake；
Intelligent monitoring layer includes the input of Monitor Computer Control System, parameter, AAO process simulation and the emulation of bottom aerator, upper
Machine monitoring system sets up communication connection with PLC control system, and Monitor Computer Control System is used for acquisition instrument data and equipment state,
And be responsible for carrying out data exchange with AAO process simulation and the emulation of bottom aerator, it is achieved the optimization of aerator runs；Parameter is defeated
Enter for arranging the technological parameter of AAO biological tank, the device parameter of aerator and aerating pipelines parameter, AAO process simulation and the end
Portion's aerator emulates the data according to instrument and characteristics dynamic analysis AAO biological tank process operation state, regulates equipment in real time
Operational factor.
A kind of accurate aeration control system for AAO biological tank the most according to claim 1, it is characterised in that: described
AAO process simulation be to carry out dynamic calculation need according to influent COD, water inlet NH3, the design parameter of flow of inlet water and AAO biological tank
Oxygen amount.
A kind of accurate aeration control system for AAO biological tank the most according to claim 1, it is characterised in that: described
The emulation of bottom aerator be according to oxygen demand parameter, aeration house steward and the gas flow of aeration branch pipe and calculation of pressure needs
Aeration rate, and be converted into rotating speed, is downloaded to rotating speed by Monitor Computer Control System in the converter of aerator.
A kind of accurate aeration control system for AAO biological tank the most according to claim 1, it is characterised in that: described
4-20MA output by bottom aerator emulate Parameters Transformation become 4-20MA signal be transferred to regulate valve electrically operated valve in.
A kind of accurate aeration control system for AAO biological tank the most according to claim 1, it is characterised in that: described
Biological tank instrument include being arranged on the gas flow sensor above aeration house steward and every aeration branch pipe and gas pressure passes
Sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620557072.0U CN205665573U (en) | 2016-06-07 | 2016-06-07 | A accurate aeration control system for biological pond of AAO |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620557072.0U CN205665573U (en) | 2016-06-07 | 2016-06-07 | A accurate aeration control system for biological pond of AAO |
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| Publication Number | Publication Date |
|---|---|
| CN205665573U true CN205665573U (en) | 2016-10-26 |
Family
ID=57156127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620557072.0U Expired - Fee Related CN205665573U (en) | 2016-06-07 | 2016-06-07 | A accurate aeration control system for biological pond of AAO |
Country Status (1)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106517548A (en) * | 2016-11-21 | 2017-03-22 | 徐州核瑞环保投资有限公司 | Dissolved oxygen control device and system thereof |
| CN110482687A (en) * | 2019-09-05 | 2019-11-22 | 中冶华天工程技术有限公司 | A kind of accurate aeration method based on automatic control |
| CN112374687A (en) * | 2020-10-09 | 2021-02-19 | 浙江佳环电子有限公司 | Integrated optimization treatment and system equipment for urban sewage |
| CN115448444A (en) * | 2022-10-14 | 2022-12-09 | 一汽丰田汽车有限公司 | Aeration system, aeration control method and device thereof and storage medium |
-
2016
- 2016-06-07 CN CN201620557072.0U patent/CN205665573U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106517548A (en) * | 2016-11-21 | 2017-03-22 | 徐州核瑞环保投资有限公司 | Dissolved oxygen control device and system thereof |
| CN110482687A (en) * | 2019-09-05 | 2019-11-22 | 中冶华天工程技术有限公司 | A kind of accurate aeration method based on automatic control |
| CN112374687A (en) * | 2020-10-09 | 2021-02-19 | 浙江佳环电子有限公司 | Integrated optimization treatment and system equipment for urban sewage |
| CN115448444A (en) * | 2022-10-14 | 2022-12-09 | 一汽丰田汽车有限公司 | Aeration system, aeration control method and device thereof and storage medium |
| CN115448444B (en) * | 2022-10-14 | 2023-12-29 | 一汽丰田汽车有限公司 | Aeration system, aeration control method and device thereof and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161026 Termination date: 20200607 |