CN109368921A - A kind of green ecological sewage treatment control system - Google Patents
A kind of green ecological sewage treatment control system Download PDFInfo
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- CN109368921A CN109368921A CN201811338596.0A CN201811338596A CN109368921A CN 109368921 A CN109368921 A CN 109368921A CN 201811338596 A CN201811338596 A CN 201811338596A CN 109368921 A CN109368921 A CN 109368921A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/009—Apparatus with independent power supply, e.g. solar cells, windpower, fuel cells
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/11—Turbidity
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/22—O2
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/42—Liquid level
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/06—Pressure conditions
- C02F2301/066—Overpressure, high pressure
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Activated Sludge Processes (AREA)
- Treatment Of Sludge (AREA)
Abstract
The present invention provides a kind of green ecological sewage treatment control system, which includes PLC control centre, host computer, dynamical system, collection system, processing system and reclaiming system；The PLC control centre and the host computer, dynamical system, collection system, processing system and reclaiming system are electrically connected, and the PLC control centre is for controlling the collection system, processing system and reclaiming system work；The host computer is connect with the PLC control centre by Ethernet cable；The dynamical system provides electric energy for entire green ecological sewage treatment control system.A kind of design method of green ecological sewage treatment control system of the present invention, wind-driven generator, solar panel are set and form dual power supply mode with motor power together, it can work independently as system power supply, effectively utilize all resources, can achieve energy-efficient purpose.
Description
Technical field
The invention patent relates to sewage treatment fields, more particularly to a kind of green ecological sewage treatment control system.
Background technique
Sewage treatment project is always the important most important thing in urban infrastructure construction, past sewage treatment project
It often establishes on ground mostly, life of the noise and exhaust gas that sewage disposal device longtime running generates to neighbouring resident
Cause negative impact.It is destroyed caused by peri-urban environment for ground sewage processing equipment, most mechanical equipment quilt
The green ecological sewage disposal system of underground is placed in as the important ring in our sewage treatment projects.Green ecological
Sewage disposal system not only can with the influence greatly reduced to ambient enviroment, traditional ground Construction Mode can also be broken through,
Land resource is greatly saved.
The patent about green ecological sewage treatment control system direction mainly has at present: a kind of subsurface sewage disposal system
(publication number: CN205821110U) open system includes water storage well, neutralization bucket, contact break sedimentation basin, filter grid, aeration tank, water distribution
Pond and irrigation device, entire sewage disposal system is all disposed within underground and whole system can reach the mark of greening irrigation water
Standard, but the exhaust-gas treatment part in sewage treatment is not illustrated；A kind of subsurface sewage disposal system (publication number:
CN108191171A) open system includes water purification filter system, multi-stage sewage processing system, chinampa biological treatment system, stands
Detection cell and standard emission system are that waste water control forms closed circulation system, having improves water quality using over all Integration technology
And it realizes the advantages of recycling to underground effluent cycle, but integrated control system is not described in detail specifically.
Existing sewage disposal system recognizes not enough the complexity of sewage treatment, often only focuses on certain elements, no
The globality for paying attention to sewage disposal system be easy to cause the waste of resource.
Summary of the invention
In order to advanced optimize the globality of green ecological sewage disposal system, the invention patent provides a kind of green ecological
The design method of sewage treatment control system.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of green ecological sewage treatment control system, the system include PLC control centre, host computer, dynamical system, receipts
Collecting system, processing system and reclaiming system；The PLC control centre and the host computer, dynamical system, collection system, processing
System and reclaiming system are electrically connected, and the PLC control centre is for controlling the collection system, processing system and reclaiming system
Work；The host computer is connect with the PLC control centre by Ethernet cable；The dynamical system is entire green ecological
Sewage treatment control system provides electric energy；
The dynamical system includes wind-driven generator, solar panel, wind/light complementation controller, battery group, motor
Power supply, inverter, the wind-driven generator, solar panel are electrically connected with the input terminal of wind/light complementation controller, institute
Battery component is stated not to be electrically connected with the output end of the wind/light complementation controller and inverter, the motor power with it is described
Inverter is electrically connected with the PLC control centre；
The collection system includes Domestic sewage collecting device, rain collector, imported valve, pretreatment pool, grid
Machine, first liquid level gauge and the first transmissometer, the Domestic sewage collecting device, rain collector are logical with the imported valve
Piping connection, the imported valve are connect with the grid maker by pipeline, the imported valve and the PLC control centre
Communication connection, the grid maker are set to the pretreatment tank entrance；The first liquid level gauge and the first transmissometer are set to described
On pretreatment pool, the first liquid level gauge and the first transmissometer with PLC control centre communication connection；
The processing system includes proof submersible sand discharging pump, sedimentation basin, flocculation stirring device, mixing agitator, grug feeding jar, first-class
Meter, dosing pump, the second nephelometer, air blower, aerating filter, sludge pump, sludge-tank, oxygen dissolve instrument, exhaust gas concentration senses instrument,
Ventilation blower, second flowmeter, second liquid level gauge, the proof submersible sand discharging pump and flocculation stirring device are set in the sedimentation basin, institute
Proof submersible sand discharging pump is stated equipped with first flowmeter, the first flowmeter and PLC control centre communication connection, the diving
Dredge pump, flocculation stirring device are connect with the PLC control centre by frequency converter；The grug feeding jar passes through with the sedimentation basin
Pipeline connection, the mixing agitator are set in the grug feeding jar, and the mixing agitator and the PLC control centre pass through change
The connection of frequency device；The dosing pump is set on the pipeline between the grug feeding jar and the sedimentation basin, and the second flowmeter is set to
On the dosing pump, the dosing pump is connect with the PLC control centre by frequency converter, the second flowmeter with it is described
PLC control centre communication connection；The aerating filter passes through pipeline with the sedimentation basin, air blower, sludge-tank and connect, described
Air blower is connect with the PLC control centre by frequency converter；Second nephelometer, oxygen dissolution instrument are set to the aeration filter
Chi Shang, second nephelometer, oxygen dissolution instrument with PLC control centre communication connection；The sludge pump is set to the exposure
On pipeline between air filter pond and sludge-tank, the sludge pump, ventilation blower are connect with the PLC control centre by frequency converter；
The exhaust gas concentration sensing instrument and PLC control centre communication connection；The second liquid level gauge is set on the sedimentation basin, institute
State second liquid level gauge and PLC control centre communication connection；
The reclaiming system includes self priming pump, man-made lake, force (forcing) pump, irrigates valve, the self priming pump and the man-made lake
It is connected by pipeline；The force (forcing) pump is connect with the man-made lake by pipeline, and the pressurization pump discharge, which is equipped with, irrigates valve, institute
It states self priming pump, force (forcing) pump to connect with the PLC control centre by frequency converter, in the irrigation valve and PLC control
Heart communication connection.
Further, the working method of a kind of green ecological sewage treatment control system, steps are as follows:
Step 1 is collected by Domestic sewage collecting device and rain collector, and sewage is flowed by imported valve and pre-processed
Pond, the grid maker positioned at pretreatment pool entrance forecloses the biggish solid sundries of volume in sewage, according to first liquid level gauge
The liquid level L of the pretreatment pool of feedback1, by the aperture of PLC control centre control imported valve；
Step 2, sewage flow into sedimentation basin, according to the liquid level L of the sedimentation basin of second liquid level gauge feedback2, by PLC control centre
Control the start and stop of proof submersible sand discharging pump；Work as L2Reach the height of 2/3 proof submersible sand discharging pump, PLC control centre starts proof submersible sand discharging pump；When
L2Less than the height of 2/3 proof submersible sand discharging pump, PLC control centre closes proof submersible sand discharging pump；First flowmeter feeds back discharge of sewage Q1Extremely
PLC control centre adjusts discharge of sewage Q by the revolving speed of PLC control centre control proof submersible sand discharging pump1；Exhaust gas concentration senses instrument
The exhaust gas concentration into PLC control centre feedback system, PLC control centre control the revolving speed of ventilation blower to adjust exhaust gas flow；
Step 3 measures pretreatment pool import turbidity of sewage according to the first transmissometer, after calculating, is passed through by grug feeding jar
Dosing pump dosing into sedimentation basin；The turbidity of aerating filter is fed back according to the second nephelometer, second flowmeter is to PLC control centre
The flow for feeding back dosing pump, by the start and stop of PLC control centre control mixing agitator, the start and stop of flocculation stirring device and dosing pump
Motor speed constantly adjusts dosing until the turbidity in aerating filter reaches suspended matter (ss)≤10mg/L discharge standard
Revolution speed；
Step 4, sewage enter aerating filter by sedimentation basin, and PLC control centre controls the start and stop of air blower, dissolves instrument by oxygen
Oxygen content into PLC control centre feedback aerating filter, when dissolved oxygen concentration is lower than 4mg/L, PLC control centre control drum
Rotation speed of fan increases, and until so that dissolved oxygen concentration is reached 9mg/L requirement, sewage filters outflow by the film in aerating filter；PLC
Sludge is discharged in sludge-tank by control centre's starting sludge pump from aerating filter；
Step 5, PLC control centre control the start and stop of self priming pump, and self priming pump will be sucked artificial by the water in aerating filter
In lake, PLC control centre controls the start and stop of force (forcing) pump in irrigation system and the aperture of irrigation valve, irrigates the external world.
Further, in step 1, imported valve aperture function under normal circumstances are as follows:
In formula:
u1- imported valve aperture；
Q1- import the discharge of sewage, unit: cube meter per second；
F-relation function of the imported valve aperture about flow；
L1- pretreatment pool liquid level, unit: rice；
H1- pretreatment pool height, unit: rice；
Using integral-separated PID control, given threshold ε=0.05, in the case that proof submersible sand discharging pump is out of service suddenly
Imported valve aperture function are as follows:
In formula: T-imported valve controls sampling period, unit: second；
Kp-imported valve controls proportional gain factor；
TI- imported valve controls the time of integration；
TD- imported valve controls derivative time；
e1(k) the imported valve aperture deviation of-kth time sampling instant input, e1(k)=f (Q1)；
u1(k) the valve opening output valve of-kth time sampling instant imported valve.
Further, in step 3, PLC control centre uses integral-separated PID control dosing pump motor speed, specific side
Method is as follows:
When the turbidity of aerating filter sewage and discharge standard indifference, dosing revolution speed is remained unchanged；When aerating filter is turbid
Degree is greater than discharge standard, makes dosing pump accelerated service；When aerating filter turbidity be less than discharge standard, make dosing pump slow down operating.
Further, the control function of the dosing pump motor speed are as follows:
In formula:
T2- dosing pump motor control sampling period, unit: second；
Kp2- dosing pump motor control proportional gain factor；
TI2- dosing pump motor control the time of integration；
TD2- dosing pump motor control derivative time；
QCurrentlyThe currently practical flow of-dosing pump, unit: cube meter per second；
QDosing- dosing pump metered flow, unit: cube meter per second；
nDosing- dosing pump rated speed, unit: rev/min；
e2(k) the dosing pump motor speed deviation of-kth time sampling instant input；
Δu2(k)-kth time sampling instant dosing pump motor speed aperture adjusts output valve.
In the present invention, host computer realizes data exchange by Ethernet cable and PLC control centre, can be in host computer
Time update is made to the program of PLC control centre, and can be monitored in real time at sewage by the configuration software in host computer
The operating status of reason system, and can use data management system and realize that the information resources of different sewage processing system are effectively whole
It closes.
The utility model has the advantages that
1, the design method of a kind of green ecological sewage treatment control system of the present invention, setting wind-driven generator,
Solar panel forms dual power supply mode with motor power together, can work independently as system power supply, effectively
Using all resources, energy-efficient purpose can achieve.
2, the design method of a kind of green ecological sewage treatment control system of the present invention, setting PLC control in
The heart can monitor turbidity of sewage, exhaust gas concentration, pump motor revolving speed, valve opening and sewage level in sewage disposal system in real time
Deng overall-in-one control schema can guarantee system safe and highly efficient operation always.
Detailed description of the invention
Fig. 1 is a kind of green ecological sewage treatment control system dynamical system schematic diagram.
Fig. 2 is a kind of green ecological sewage treatment control system schematic diagram.
In figure, 1- wind-driven generator；2- solar panel；3- wind/light complementation controller；4- battery group；5- motor electricity
Source；6- inverter；7-PLC control centre；8- Domestic sewage collecting device；9- rain collector；10- imported valve；11- is pre-
Processing pond；12- grid maker；13- proof submersible sand discharging pump；14- sedimentation basin；15- flocculation stirring device；16- mixing agitator；17- dosing
Tank；18- first flowmeter；19- dosing pump；20- first liquid level gauge；The first transmissometer of 21-；The second nephelometer of 22-；23- air blast
Machine；24- aerating filter；25- sludge pump；26- sludge-tank；27- oxygen dissolves instrument；28- exhaust gas concentration senses instrument；29- ventilation blower；
30- self priming pump；31- man-made lake；32- force (forcing) pump；33- irrigates valve；34- second flowmeter；35- second liquid level gauge；36- is upper
Machine.
Specific embodiment
The invention will be further described in the following with reference to the drawings and specific embodiments:
As shown in Figure 1, 2, a kind of green ecological sewage treatment control system, which includes PLC control centre 7, upper
Machine 36, dynamical system, collection system, processing system and reclaiming system；The PLC control centre 7 and the host computer 36, power
System, collection system, processing system and reclaiming system are electrically connected, and the PLC control centre 7 is for controlling the collection system
System, processing system and reclaiming system work；The host computer 36 is connect with the PLC control centre 7 by Ethernet cable；Institute
It states dynamical system and provides electric energy for entire green ecological sewage treatment control system；
The dynamical system include wind-driven generator 1, solar panel 2, wind/light complementation controller 3, battery group 4,
Motor power 5, inverter 6, the wind-driven generator 1, solar panel 2 are electric with the input terminal of wind/light complementation controller 3
Property connection, the battery group 4 is electrically connected with the output end of the wind/light complementation controller 3 and inverter 6 respectively, the electricity
Electromechanical source 5 and the inverter 6 are electrically connected with the PLC control centre 7；
The collection system includes Domestic sewage collecting device 8, rain collector 9, imported valve 10, pretreatment pool
11, grid maker 12, first liquid level gauge 20 and the first transmissometer 21, the Domestic sewage collecting device 8, rain collector 9 are equal
Connect with the imported valve 10 by pipeline, the imported valve 10 is connect with the grid maker 12 by pipeline, it is described into
Mouth valve 10 and 7 communication connection of PLC control centre, the grid maker 12 are set to 11 entrance of the pretreatment tank；Described
One liquidometer 20 and the first transmissometer 21 are set in the pretreatment tank 11, the first liquid level gauge 20 and the first transmissometer 21
With 7 communication connection of PLC control centre；
The processing system includes proof submersible sand discharging pump 13, sedimentation basin 14, flocculation stirring device 15, mixing agitator 16, dosing
Tank 17, first flowmeter 18, dosing pump 19, the second nephelometer 22, air blower 23, aerating filter 24, sludge pump 25, sludge-tank
26, oxygen dissolution instrument 27, exhaust gas concentration sense instrument 28, ventilation blower 29, second flowmeter 34, second liquid level gauge 35, the diving row
Dirt pump 13 is set in the sedimentation basin 14 with flocculation stirring device 15, and the proof submersible sand discharging pump 13 is equipped with first flowmeter 18,
The first flowmeter 18 and 7 communication connection of PLC control centre, the proof submersible sand discharging pump 13, flocculation stirring device 15 with
The PLC control centre 7 is connected by frequency converter；The grug feeding jar 17 is connect with the sedimentation basin 14 by pipeline, described mixed
It closes blender 16 to be set in the grug feeding jar 17, the mixing agitator 16 is connected with the PLC control centre 7 by frequency converter
It connects；The dosing pump 19 is set on the pipeline between the grug feeding jar 17 and the sedimentation basin 14, and the second flowmeter 34 is set
In on the dosing pump 19, the dosing pump 19 is connect with the PLC control centre 7 by frequency converter, the second flowmeter
34 with 7 communication connection of PLC control centre；The aerating filter 24 and the sedimentation basin 14, air blower 23, sludge-tank 26 are equal
It is connected by pipeline, the air blower 23 is connect with the PLC control centre 7 by frequency converter；Second nephelometer 22, oxygen
Dissolve instrument 27 be set to the aerating filter 24 on, second nephelometer 22, oxygen dissolution instrument 27 with the PLC control centre
7 communication connections；The sludge pump 25 is set on the pipeline between the aerating filter 24 and sludge-tank 26,25 Dian of sludge pump
Ventilation blower 29 is connect with the PLC control centre 7 by frequency converter；In the exhaust gas concentration sensing instrument 28 and PLC control
7 communication connection of the heart；The second liquid level gauge 35 is set on the sedimentation basin 14, and the second liquid level gauge 35 and PLC is controlled
7 communication connection of center；
The reclaiming system includes self priming pump 30, man-made lake 31, force (forcing) pump 32, irrigates valve 33, the self priming pump 30 with
The man-made lake 31 is connected by pipeline；The force (forcing) pump 32 is connect with the man-made lake 31 by pipeline, the force (forcing) pump 32
Outlet, which is equipped with, irrigates valve 33, and the self priming pump 30, force (forcing) pump 32 are connect with the PLC control centre 7 by frequency converter, institute
It states and irrigates valve 33 and 7 communication connection of PLC control centre.
A kind of working method of green ecological sewage treatment control system, steps are as follows:
Step 1 is collected by Domestic sewage collecting device 8 and rain collector 9, and sewage is flowed into pre- by imported valve 10
Processing pond 11, the grid maker 12 positioned at 11 entrance of pretreatment pool foreclose the biggish solid sundries of volume in sewage, according to
The liquid level L for the pretreatment pool 11 that first liquid level gauge 20 is fed back1, the aperture of imported valve 10 is controlled by PLC control centre 7；
Step 2, sewage flow into sedimentation basin 14, according to the liquid level L for the sedimentation basin 14 that second liquid level gauge 35 is fed back2, controlled by PLC
Center 7 processed controls the start and stop of proof submersible sand discharging pump 13；Work as L2Reach the height of 2/3 proof submersible sand discharging pump 13, PLC control centre 7 starts
Proof submersible sand discharging pump 13；Work as L2Less than the height of 2/3 proof submersible sand discharging pump 13, PLC control centre closes proof submersible sand discharging pump 13；It is first-class
Meter 18 feeds back discharge of sewage Q1To PLC control centre 7, the revolving speed of proof submersible sand discharging pump 13 is controlled by PLC control centre 7 to adjust
Discharge of sewage Q1；Exhaust gas concentration senses the exhaust gas concentration into 7 feedback system of PLC control centre of instrument 28, and PLC control centre 7 controls
The revolving speed of ventilation blower 29 adjust exhaust gas flow；
Step 3 measures 11 import turbidity of sewage of pretreatment pool according to the first transmissometer 21, after calculating, by grug feeding jar
17 pass through the dosing into sedimentation basin 14 of dosing pump 19；The turbidity of aerating filter 24, second flow are fed back according to the second nephelometer 22
Meter 34 feeds back the flow of dosing pump 19 to PLC control centre 7, and start and stop, the wadding of mixing agitator 16 are controlled by PLC control centre 7
The start and stop of solidifying blender 15 and the motor speed of dosing pump 19, until the turbidity in aerating filter 24 reach suspended matter (ss)≤
Dosing revolution speed is constantly adjusted until the discharge standard of 10mg/L；
Step 4, sewage enter aerating filter 24 by sedimentation basin 14, and PLC control centre 7 controls the start and stop of air blower 23, by
Oxygen dissolves oxygen content of the instrument 27 into the feedback aerating filter 24 of PLC control centre 7, when dissolved oxygen concentration is lower than 4mg/L, PLC
Control centre 7 controls 23 revolving speed of air blower and increases, and until so that dissolved oxygen concentration is reached 9mg/L requirement, sewage passes through aerating filter
Film in 24 filters outflow；PLC control centre 7 starts sludge pump 25 and is discharged to sludge in sludge-tank 26 from aerating filter 24；
Step 5, PLC control centre 7 control the start and stop of self priming pump 30, and self priming pump 30 will be inhaled by the water in aerating filter 24
Enter in man-made lake 31, PLC control centre 7 controls the start and stop of force (forcing) pump 32 in irrigation system and the aperture of irrigation valve 33, right
The external world is irrigated.
Host computer realizes data exchange by Ethernet cable and PLC control centre, can control in host computer PLC
The program at center makes time update, and can monitor the fortune of sewage disposal system in real time by the configuration software in host computer
Row state, and can use data management system and realize that the information resources of different sewage processing system effectively integrate.
In step 1,10 aperture function of imported valve under normal circumstances are as follows:
In formula:
u110 aperture of-imported valve；
Q1- import the discharge of sewage, unit: cube meter per second；
Relation function of 10 aperture of f-imported valve about flow；
L111 liquid level of-pretreatment pool, unit: rice；
H111 height of-pretreatment pool, unit: rice；
Using integral-separated PID control, given threshold ε=0.05, the situation out of service suddenly of proof submersible sand discharging pump 13
10 aperture function of lower inlet valve are as follows:
In formula: T-imported valve 10 controls sampling period, unit: second；
Kp-imported valve 10 controls proportional gain factor；
TI- imported valve 10 controls the time of integration；
TD- imported valve 10 controls derivative time；
e1(k) the 10 aperture deviation of imported valve of-kth time sampling instant input, e1(k)=f (Q1)；
u1(k) the valve opening output valve of-kth time sampling instant imported valve 10.
In step 3, PLC control centre 7 uses 19 motor speed of integral-separated PID control dosing pump, and specific method is such as
Under:
When the turbidity of 24 sewage of aerating filter and discharge standard indifference, 19 revolving speed of dosing pump is remained unchanged；When aeration is filtered
24 turbidity of pond is greater than discharge standard, makes 19 accelerated service of dosing pump；When 24 turbidity of aerating filter be less than discharge standard, make dosing pump
19, which slow down, operates.
The control function of 19 motor speed of dosing pump are as follows:
In formula:
T219 motor control sampling period of-dosing pump, unit: second；
Kp219 motor control proportional gain factor of-dosing pump；
TI2The 19 motor control time of integration of-dosing pump；
TD219 motor control derivative time of-dosing pump；
QCurrentlyThe currently practical flow of-dosing pump 19, unit: cube meter per second；
QDosing19 metered flow of-dosing pump, unit: cube meter per second；
nDosing19 rated speed of-dosing pump, unit: rev/min；
e2(k) the 19 motor speed deviation of dosing pump of-kth time sampling instant input；
Δu2(k) 19 motor speed aperture of-kth time sampling instant dosing pump adjusts output valve.
Claims (5)
1. a kind of green ecological sewage treatment control system, which is characterized in that including PLC control centre (7), host computer (36),
Dynamical system, collection system, processing system and reclaiming system；The PLC control centre (7) and the host computer (36), power
System, collection system, processing system and reclaiming system are electrically connected, and the PLC control centre (7) is for controlling the collection system
System, processing system and reclaiming system work；The host computer (36) and the PLC control centre (7) are connected by Ethernet cable
It connects；The dynamical system provides electric energy for entire green ecological sewage treatment control system；
The dynamical system includes wind-driven generator (1), solar panel (2), wind/light complementation controller (3), battery group
(4), motor power (5), inverter (6), the wind-driven generator (1), solar panel (2) are and wind/light complementation controller
(3) input terminal is electrically connected, the battery group (4) respectively with the output end of the wind/light complementation controller (3) and inversion
Device (6) is electrically connected, and the motor power (5) and the inverter (6) are electrically connected with the PLC control centre (7)；
The collection system includes Domestic sewage collecting device (8), rain collector (9), imported valve (10), pretreatment pool
(11), grid maker (12), first liquid level gauge (20) and the first transmissometer (21), the Domestic sewage collecting device (8), rainwater collection
Acquisition means (9) are connect with the imported valve (10) by pipeline, and the imported valve (10) and the grid maker (12) are logical
Piping connection, the imported valve (10) and PLC control centre (7) communication connection, the grid maker (12) are set to institute
State pretreatment pool (11) entrance；The first liquid level gauge (20) and the first transmissometer (21) are set to the pretreatment tank (11)
On, the first liquid level gauge (20) and the first transmissometer (21) with PLC control centre (7) communication connection；
The processing system include proof submersible sand discharging pump (13), sedimentation basin (14), flocculation stirring device (15), mixing agitator (16),
Grug feeding jar (17), first flowmeter (18), dosing pump (19), the second nephelometer (22), air blower (23), aerating filter (24),
Sludge pump (25), sludge-tank (26), oxygen dissolution instrument (27), exhaust gas concentration sense instrument (28), ventilation blower (29), second flowmeter
(34), second liquid level gauge (35), the proof submersible sand discharging pump (13) and flocculation stirring device (15) are set in the sedimentation basin (14),
The proof submersible sand discharging pump (13) is equipped with first flowmeter (18), the first flowmeter (18) and the PLC control centre (7)
Communication connection, the proof submersible sand discharging pump (13), flocculation stirring device (15) are connected with the PLC control centre (7) by frequency converter
It connects；The grug feeding jar (17) is connect with the sedimentation basin (14) by pipeline, and the mixing agitator (16) is set to the dosing
In tank (17), the mixing agitator (16) is connect with the PLC control centre (7) by frequency converter；The dosing pump (19)
On pipeline between the grug feeding jar (17) and the sedimentation basin (14), the second flowmeter (34) is set to the dosing
It pumps on (19), the dosing pump (19) is connect with the PLC control centre (7) by frequency converter, the second flowmeter (34)
With PLC control centre (7) communication connection；The aerating filter (24) and the sedimentation basin (14), air blower (23), sludge
Pond (26) is connected by pipeline, and the air blower (23) is connect with the PLC control centre (7) by frequency converter；Described
Two nephelometers (22), oxygen dissolution instrument (27) are set on the aerating filter (24), and second nephelometer (22), oxygen dissolve instrument
(27) with PLC control centre (7) communication connection；The sludge pump (25) is set to the aerating filter (24) and sludge-tank
(26) on the pipeline between, sludge pump (25) the Dian ventilation blower (29) is connect with the PLC control centre (7) by frequency converter；
Exhaust gas concentration sensing instrument (28) and PLC control centre (7) communication connection；The second liquid level gauge (35) is set to described
On sedimentation basin (14), the second liquid level gauge (35) and PLC control centre (7) communication connection；
The reclaiming system includes self priming pump (30), man-made lake (31), force (forcing) pump (32), irrigates valve (33), the self priming pump
(30) it is connect with the man-made lake (31) by pipeline；The force (forcing) pump (32) is connect with the man-made lake (31) by pipeline,
Force (forcing) pump (32) outlet, which is equipped with, irrigates valve (33), and the self priming pump (30), force (forcing) pump (32) are and in PLC control
The heart (7) is connected by frequency converter, the irrigation valve (33) and PLC control centre (7) communication connection.
2. a kind of working method of green ecological sewage treatment control system according to claim 1, which is characterized in that step
It is rapid as follows:
Step 1 is collected by Domestic sewage collecting device (8) and rain collector (9), and sewage is flowed by imported valve (10)
Pretreatment pool (11), the grid maker (12) for being located at pretreatment pool (11) entrance exclude the biggish solid sundries of volume in sewage
Outside, according to the liquid level L of the pretreatment pool (11) of first liquid level gauge (20) feedback1, imported valve is controlled by PLC control centre (7)
(10) aperture；
Step 2, sewage flow into sedimentation basin (14), according to the liquid level L of the sedimentation basin (14) of second liquid level gauge (35) feedback2, by PLC
Control centre (7) controls the start and stop of proof submersible sand discharging pump (13)；Work as L2Reach the height of 2/3 proof submersible sand discharging pump (13), in PLC control
The heart (7) starts proof submersible sand discharging pump (13)；Work as L2Less than the height of 2/3 proof submersible sand discharging pump (13), PLC control centre closes diving row
Dirt pump (13)；First flowmeter (18) feeds back discharge of sewage Q1To PLC control centre (7), controlled by PLC control centre (7) latent
The revolving speed of water dredge pump (13) adjusts discharge of sewage Q1；Exhaust gas concentration senses instrument (28) to PLC control centre (7) feedback system
Interior exhaust gas concentration, PLC control centre (7) control the revolving speed of ventilation blower (29) to adjust exhaust gas flow；
Step 3 measures pretreatment pool (11) import turbidity of sewage according to the first transmissometer (21), after calculating, by grug feeding jar
(17) pass through dosing pump (19) dosing in sedimentation basin (14)；The turbid of aerating filter (24) is fed back according to the second nephelometer (22)
Degree, second flowmeter (34) are controlled mixed to the flow of PLC control centre (7) feedback dosing pump (19) by PLC control centre (7)
Start and stop, the start and stop of flocculation stirring device (15) and the motor speed of dosing pump (19) for closing blender (16), until aerating filter
(24) dosing revolution speed is constantly adjusted until the discharge standard that the turbidity in reaches suspended matter ss≤10mg/L；
Step 4, sewage enter aerating filter (24) by sedimentation basin (14), and PLC control centre (7) control air blower (23) is opened
Stop, from oxygen content of oxygen dissolution instrument (27) into PLC control centre (7) feedback aerating filter (24), when dissolved oxygen concentration is lower than
When 4mg/L, PLC control centre (7) controls air blower (23) revolving speed and increases, dirty until so that dissolved oxygen concentration is reached 9mg/L requirement
Water filters outflow by the film in aerating filter (24)；PLC control centre (7) starts sludge pump (25) for sludge from aerating filter
(24) it is discharged in sludge-tank (26)；
Step 5, PLC control centre (7) control the start and stop of self priming pump (30), and self priming pump (30) will be by aerating filter (24)
Water sucks in man-made lake (31), and PLC control centre (7) controls the start and stop of force (forcing) pump (32) in irrigation system and irrigates valve
(33) aperture, irrigates the external world.
3. a kind of working method of green ecological sewage treatment control system according to claim 2, which is characterized in that step
In rapid 1, imported valve (10) aperture function under normal circumstances are as follows:
In formula:
u1- imported valve (10) aperture；
Q1- import the discharge of sewage, unit: cube meter per second；
Relation function of f-imported valve (10) aperture about flow；
L1- pretreatment pool (11) liquid level, unit: rice；
H1- pretreatment pool (11) height, unit: rice；
Using integral-separated PID control, given threshold ε=0.05, in the case that proof submersible sand discharging pump (13) is out of service suddenly
Imported valve (10) aperture function are as follows:
In formula: T-imported valve (10) controls sampling period, unit: second；
Kp-imported valve (10) controls proportional gain factor；
TI- imported valve (10) controls the time of integration；
TD- imported valve (10) controls derivative time；
e1(k) imported valve (10) aperture deviation of-kth time sampling instant input, e1(k)=f (Q1)；
u1(k) the valve opening output valve of-kth time sampling instant imported valve (10).
4. a kind of working method of green ecological sewage treatment control system according to claim 2, which is characterized in that step
In rapid 3, PLC control centre (7) uses integral-separated PID control dosing pump (19) motor speed, and the specific method is as follows:
When the turbidity of aerating filter (24) sewage and discharge standard indifference, dosing pump (19) revolving speed is remained unchanged；When aeration is filtered
Pond (24) turbidity is greater than discharge standard, makes dosing pump (19) accelerated service；When aerating filter (24) turbidity be less than discharge standard, make
Dosing pump (19), which slows down, to be operated.
5. a kind of working method of green ecological sewage treatment control system according to claim 4, which is characterized in that institute
State the control function of dosing pump (19) motor speed are as follows:
In formula:
T2- dosing pump (19) motor control sampling period, unit: second；
Kp2- dosing pump (19) motor control proportional gain factor；
TI2- dosing pump (19) the motor control time of integration；
TD2- dosing pump (19) motor control derivative time；
QCurrently- dosing pump (19) currently practical flow, unit: cube meter per second；
QDosing- dosing pump (19) metered flow, unit: cube meter per second；
nDosing- dosing pump (19) rated speed, unit: rev/min；
e2(k) dosing pump (19) motor speed deviation of-kth time sampling instant input；
Δu2(k)-kth time sampling instant dosing pump (19) motor speed aperture adjusts output valve.
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