CN206289131U - A kind of sewage treatment control system based on PLC - Google Patents
A kind of sewage treatment control system based on PLC Download PDFInfo
- Publication number
- CN206289131U CN206289131U CN201621384968.XU CN201621384968U CN206289131U CN 206289131 U CN206289131 U CN 206289131U CN 201621384968 U CN201621384968 U CN 201621384968U CN 206289131 U CN206289131 U CN 206289131U
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- Prior art keywords
- plc
- pump
- control system
- system based
- sewage treatment
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Abstract
The utility model discloses a kind of sewage treatment control system based on PLC,The guidance panel electrically connected including PLC and with PLC,Liquid level gap sensor,Liquid level sensor,Dissolved oxygen instrument,Grid maker,Display panel,Frequency converter,Frequency converter and pump,Centrifugal drier and rotary disk aerator are connected,Pump includes intake pump and sludge reflux pump,Intake pump input is sewage inlet,Water inlet pump output terminal and trash,Coarse rack connects,Trash,The output end of coarse rack connects with desanding basin,Transfer shares trash and fine fack are set in desanding basin,Desanding basin connects with oxidation ditch reaction tank,Rotary disk aerator and diving mixer are set in oxidation ditch reaction tank,Oxidation ditch reaction tank output end connects with sedimentation basin,Sedimentation basin sets centrifugal drier and sludge reflux pump,Sludge reflux pump is connected to intake pump by discharge pipeline.The utility model is easy to use, vdiverse in function, operational efficiency is high, good sewage processing effect, easy to maintenance.
Description
Technical field
The utility model is related to technical field of sewage, more particularly to a kind of sewage treatment control system based on PLC.
Background technology
Municipal sewage, sanitary sewage, production waste or by the production waste after industrial enterprise's Local treatment, often all arrange
Enter drainage system.These sewage are removed and contain carbohydrate, protein, amino acid, andvegetable fats, urea, ammonia, soap and conjunction
Into outside the materials such as detergent, also pathogenic microorganism is made one containing bacterium, virus etc..Through the sewage after treatment, last outlet has
Three kinds：1. water body is discharged；2. field is irrigated；3. reuse.
Wastewater pollutants can carry out different classification according to chemical property and physical aspect.By chemical property, in sewage
Polluter can be divided into inorganic nature material and Organic material, and its chemical element is based on charcoal, nitrogen, phosphorus.By physical aspect, sewage
In polluter can be divided into polluter, colloid pollution material and dissolubility pollutant that solid suspension is in granular form
Matter.
Different Industrial Waste Water Treatments objects, different Industrial Waste Water Treatments environment, it would be desirable to have different trade effluents
Handling process is processed.Therefore, the situation of local sewage is necessarily thought better of when industrial sewage treatment technology is selected,
And the environment of the Industrial Waste Water Treatments of reality.
The method of Industrial Waste Water Treatments mainly has physics, chemistry, physical chemistry, and biology etc. is several.These method roots
According to actual conditions, can be used with single, it is also possible to be used in mixed way for different sewage.At present, the method for Industrial Waste Water Treatments
Typically based on biological treatment, it is aided with physical treatment process and method of chemical treatment.Conventional industrial sewage treatment technology has following
It is several：
（1）Traditional activated sludge process.Traditional active sludge facture is a kind of most ancient industrial sewage treatment technology, its
The key components of Industrial Waste Water Treatments are methane-generating pit and sedimentation basin.The process that organic matter in sewage is stopped in aeration tank
In, the most of organic matter in microorganism adsorption sewage in aeration tank, and inorganic matter is oxidized in aeration tank, then
In sedimentation basin in the amount of activated mud after precipitation needs to be back to aeration tank.The shortcoming of the technique has：Common aeration tank
Take up an area many, construction investment greatly, meets that national standard index of correlation scope is small, be also easy to produce sludge bulking phenomenon, the removal of phosphorus and nitrogen
Rate is low.
（2）A/O methods.A/O methods are a kind of Industrial Waste Water Treatments works grown up on the basis of traditional activated sludge process
Skill, wherein A represent Anoxic（Anoxic）, O represents Oxic（Aerobic）.A/O methods are a kind of anoxics --- the industry of-aerobe
Sewage treatment process.The technique by increasing the nitrification ----anti-nitration reaction system that Aerobic Pond and anoxic pond are formed, very well
The nitrogen content processed in sewage, with obvious denitrification effect.But this is nitrified ----anti-nitration reaction system needs
To control well, management requirement higher is thus proposed to the technique, this also becomes a big shortcoming of the technique.
（3）A/B methods.A/B methods are the abbreviations for adsorbing biological degradation method, and the technique is not just precipitated, and aeration tank is divided into height
Two sections of underload, and have independent precipitation and sludge recirculation system respectively.The high load capacity section residence time is about 20-40min, with life
Based on the effect of thing flocculation adsorption, while there is incomplete oxidation reaction, BOD up to more than 50% is removed.B sections and conventional activated sludge
Method is known each other, and load is relatively low.A sections of efficiency is very high in AB methods, and has stronger buffer capacity.B sections is played the water outlet effect of checking on, treatment
Stability is preferable.For the Industrial Waste Water Treatments of high concentration, AB methods have good applicability, and have energy-saving benefit higher.
Especially when using sludge digestion and biogas utilization technique, advantage is the most obvious.But, AB method sludge yields are larger, A sections of sludge
Content of organics is high, it is therefore necessary to add the follow-up stabilization processes of sludge, will thus increase certain investment and expense.Separately
Outward, because A sections eliminates more BOD, carbon source is caused not enough, it is difficult to realize the requirement of denitrification process.For concentration of wastewater
Low occasion, B sections also relatively difficult, it is also difficult to makes the most of the advantage.
To sum up, all there is certain defect in traditional sewage water treatment method mostly, it is impossible to realize efficiently, economical and environmentally friendly
Wastewater treatment efficiency.
Utility model content
In view of the drawbacks described above of prior art, technical problem to be solved in the utility model is to provide one kind and is based on
The sewage treatment control system of PLC, to solve the deficiencies in the prior art.
To achieve the above object, the utility model provides a kind of sewage treatment control system based on PLC, and its feature exists
In：It is the guidance panel that is electrically connected including PLC and with PLC, liquid level gap sensor, liquid level sensor, molten
Solution oxygen instrument, grid maker, display panel, frequency converter, the frequency converter are connected with pump, centrifugal drier and rotary disk aerator, institute
Pump is stated including intake pump and sludge reflux pump, the intake pump input is sewage inlet, the water inlet pump output terminal with it is clear
Dirty machine, coarse rack connect, and the trash, the output end of coarse rack connect with desanding basin, are set in the desanding basin and transferred shares clearly
Dirty machine and fine fack, the desanding basin connect with oxidation ditch reaction tank, in the oxidation ditch reaction tank set rotary disk aerator and
Diving mixer, the oxidation ditch reaction tank output end connects with sedimentation basin, and the sedimentation basin sets centrifugal drier and dirt
Mud reflux pump, the sludge reflux pump is connected to intake pump by discharge pipeline.
A kind of above-mentioned sewage treatment control system based on PLC, it is characterised in that：The liquid level gap sensor sets respectively
Put in coarse rack, fine fack both sides.
A kind of above-mentioned sewage treatment control system based on PLC, it is characterised in that：The liquid level sensor is set
In the pump house of intake pump and sludge reflux pump.
A kind of above-mentioned sewage treatment control system based on PLC, it is characterised in that：The dissolved oxygen instrument is arranged on oxidation
In ditch reaction tank.
A kind of above-mentioned sewage treatment control system based on PLC, it is characterised in that：The PLC is Siemens
S7-200 series of PLC.
A kind of above-mentioned sewage treatment control system based on PLC, it is characterised in that：The frequency converter is MM430 frequency conversions
Device.
A kind of above-mentioned sewage treatment control system based on PLC, it is characterised in that：The liquid level gap sensor is model
The ultrasonic solution potential difference meter of XL60-YI4000.
A kind of above-mentioned sewage treatment control system based on PLC, it is characterised in that：The dissolved oxygen instrument selects model
The PH/ dissolved oxygen sensing instrument of SA29-MP525.
The beneficial effects of the utility model are：
The utility model is easy to use, vdiverse in function, operational efficiency is high, good sewage processing effect, easy to maintenance, effective solution
Determine the deficiencies in the prior art.
The technique effect of design of the present utility model, concrete structure and generation is made furtherly below with reference to accompanying drawing
It is bright, to be fully understood from the purpose of this utility model, feature and effect.
Brief description of the drawings
Fig. 1 is Control system architecture block diagram of the present utility model.
Fig. 2 is workflow structure block diagram of the present utility model.
Fig. 3 is PLC schematic diagram of the present utility model.
Fig. 4 is transducer control circuit schematic diagram of the present utility model.
Specific embodiment
As shown in figure 1, a kind of sewage treatment control system based on PLC, it is characterised in that：Including PLC 1 and with
PLC 1 electrical connection guidance panel 2, liquid level gap sensor 3, liquid level sensor 4, dissolved oxygen instrument 5, grid maker 6,
Display panel 9, frequency converter 10, the frequency converter 10 are connected with pump 7, centrifugal drier 8 and rotary disk aerator 11, the pump 7
Including intake pump and sludge reflux pump, the intake pump input is sewage inlet, the water inlet pump output terminal and trash,
Coarse rack connects, and the trash, the output end of coarse rack connect with desanding basin, in the desanding basin set transfer shares trash and
Fine fack, the desanding basin connects with oxidation ditch reaction tank, sets rotary disk aerator in the oxidation ditch reaction tank and diving is stirred
Machine is mixed, the oxidation ditch reaction tank output end connects with sedimentation basin, the sedimentation basin sets centrifugal drier and sludge reflux
Pump, the sludge reflux pump is connected to intake pump by discharge pipeline.
In the present embodiment, the liquid level gap sensor 3 is separately positioned on coarse rack, fine fack both sides.Detection thickness grid
Both sides liquid level difference, for controlling the start and stop of trash.When liquid level difference exceedes certain value, start trash；Work as liquid level
Stop the operation of trash when difference is less than certain value.
In the present embodiment, the liquid level sensor 4 is arranged in the pump house of intake pump and sludge reflux pump.Detection
The height of liquid level in inlet pumping station and sludge reflux pump house, for controlling the startup and stopping of intake pump or sludge reflux pump.Enter
Diving pump operation and stopping in pump house are what is determined by the liquid level sensor in pump house, when liquid level is relatively low
Only start an immersible pump, two immersible pumps are started when liquid level is higher, if liquid level is persistently raised, output alarms to illustrate
Faulty generation.
In the present embodiment, the dissolved oxygen instrument 5 is arranged in oxidation ditch reaction tank.In order to ensure the oxygen that Institute of Micro-biology needs
Gas, it is necessary to detect the oxygen content in sewage, and its oxygen content is increased or decreased by aerator.It is arranged on by by dissolved oxygen instrument
On appropriate location, during detected value fed back into PLC, by the tach signal of computing output control aerator.When dissolved oxygen value is inclined
When low, the effect of microorganism decomposition is reduced, extend process time, treatment failure is even resulted in when serious, it is therefore desirable to increase
Plus aerator rotating speed is increasing oxygen-supplying amount；When dissolved oxygen value is higher, cause microorganism peroxidating, reduce its activity, also not
Beneficial to treatment, therefore reduce aerator rotating speed makes the dissolved oxygen in sewage be maintained at certain scope to reduce oxygen-supplying amount, finally
It is interior.
As shown in figure 3, in the present embodiment, the PLC 1 is Siemens's S7-200 series of PLC.Using CPU226
Used as the main frame of the control system, the digital quantity input point and output point that CPU226 is used in Industrial sewage treatment system all compare
It is more, therefore in addition to the I/O that PLC main frames are carried, in addition it is also necessary to extend a number of I/O expansion modules.EM223 is used herein
Input/output mixing expansion module.8 point DC are input into 8 output types.The I/O demands of control system can just be met.
As shown in figure 4, in the present embodiment, the frequency converter 10 is MM430 frequency converters.Three motors are respectively pump motor
（M1）, centrifugal drier motor（M2）, rotary disk aerator motor（M3）.Contactor KM3, KM2, KM6 control respectively M1, M2,
The power frequency operation of M3；Contactor KM5, KM9 control the converting operation of M1, M3 respectively；FR1, FR2, FR3 are respectively three motor mistakes
Carry the electrothermal relay of protection；The air switch of QF1, main circuit；FU1 is the fuse of main circuit.The MM430 frequency converters of selection
It is for controlled motor M1, M2, M3 converting operations.
In the present embodiment, the liquid level gap sensor 3 is the ultrasonic solution potential difference meter of model XL60-YI4000.
In the present embodiment, PH/ dissolved oxygen sensing instrument of the dissolved oxygen instrument 5 from model SA29-MP525.
As shown in Fig. 2 operation principle of the present utility model is：
Sewage is carried out tentatively excluding bulk foreign objects by water inlet system by coarse rack and trash, reaches desanding basin
In.Fine particle object during fine fack and rotary drum trash further purify sewage in the desanding cell system, by sewage
The tiny grains of sand enter oxidation ditch reaction tank after filtering.Biochemical treatment is carried out in the oxidation ditch system, it is harmful in decomposition sewage
Material, this link uses some chemical agents to strengthen treatment effect, is such as combined alkali, chlorine, oil flocculant.Sewage is carried out
Oil removing, sterilization, adjustment pH value.Dissolved oxygen instrument supersonic detector is provided with the system simultaneously, by it in sewage
Oxygen content detected, the value of PLC is fed back to according to it to control the operation of aerator frequency converter, changes dirty oxygen in water
Content.The effect of diving mixer is propelling current of equidirectional, the sewage of oxidation ditch and activated sludge is in be stirred vigorously and is sufficiently mixed
Contact, makes biochemical reaction more abundant, farthest to decompose the harmful components in sewage.Sewage through processing enters precipitation
Chi Zhong, carries out physical sedimentation in the presence of mud scraper, in order to strengthen sedimentation effect, while adding coagulant and flocculant to utilize
The strong adsorption bridging action of macromolecule flocculation aid is more prone to sedimentation.
Sewage processes last arrival and is dehydrated link through sedimentation basin, is discharged after dewater treatment is carried out under centrifugal drier effect
Clear water.Meanwhile, the sludge reflux pump of sewage backflow system is processed remaining sludge and used sludge, the equipment
Operation and the main state according to liquid level sensor in pump house of stopping, the operation of reflux pump is stopped when liquid level is less than certain value；
When liquid level is persistently high-order higher than certain, reflux pump is out of service while output alarm signal；When liquid level is in normal condition, return
Stream pump normally runs.
The main unit such as including guidance panel, display panel, electrical control cabinet of electric control system of the present utility model.By
In needing the more digital input amount of detection within the system, and also the input of analog quantity is detected, according to the program of setting
After carrying out data processing, output control signal, therefore the control logic of system is accomplished by strictly according to the defeated of detection signal with sequential
Enter to be controlled.
(1）Guidance panel.Guidance panel mainly has automatic button, hand push button, grid maker start button, trash to start
Button, immersible pump start button, diving mixer start button, sludge reflux pump button, aerator power frequency and frequency conversion button, with
And frequency conversion acceleration-deceleration button etc..
(2）Display panel.Display panel is due to that will show more data therefore general using touch-screen or man-machine boundary
Face.
(3）Electrical control cabinet.Electrical control cabinet is the nucleus equipment of electrical control, mainly including frequency converter, all kinds of sensings
The input signal of device, PLC and its expansion module etc..
Preferred embodiment of the present utility model described in detail above.It should be appreciated that the ordinary skill people of this area
Member just can make many modifications and variations without creative work according to design of the present utility model.Therefore, all this technology necks
Technical staff passes through logic analysis, reasoning or limited reality on the basis of existing technology according to design of the present utility model in domain
Available technical scheme is tested, all should be in the protection domain being defined in the patent claims.
Claims (8)
1. a kind of sewage treatment control system based on PLC, it is characterised in that：Including PLC（1）And with PLC
（1）The guidance panel of electrical connection（2）, liquid level gap sensor（3）, liquid level sensor（4）, dissolved oxygen instrument（5）, grid maker
（6）, display panel（9）, frequency converter（10）, the frequency converter（10）With pump（7）, centrifugal drier（8）And rotary disk aerator
（11）Connection, the pump（7）Including intake pump and sludge reflux pump, the intake pump input is sewage inlet, it is described enter
Water pump output end connects with trash, coarse rack, and the trash, the output end of coarse rack connect with desanding basin, the desanding
Transfer shares trash and fine fack are set in pond, and the desanding basin connects with oxidation ditch reaction tank, set in the oxidation ditch reaction tank
Put rotary disk aerator and diving mixer, the oxidation ditch reaction tank output end connects with sedimentation basin, the sedimentation basin set from
Core type dewaterer and sludge reflux pump, the sludge reflux pump are connected to intake pump by discharge pipeline.
2. a kind of sewage treatment control system based on PLC as claimed in claim 1, it is characterised in that：The liquid level difference is passed
Sensor（3）It is separately positioned on coarse rack, fine fack both sides.
3. a kind of sewage treatment control system based on PLC as claimed in claim 1, it is characterised in that：The liquid level
Sensor（4）It is arranged in the pump house of intake pump and sludge reflux pump.
4. a kind of sewage treatment control system based on PLC as claimed in claim 1, it is characterised in that：The dissolved oxygen instrument
（5）It is arranged in oxidation ditch reaction tank.
5. a kind of sewage treatment control system based on PLC as claimed in claim 1, it is characterised in that：The PLC
（1）It is Siemens's S7-200 series of PLC.
6. a kind of sewage treatment control system based on PLC as claimed in claim 1, it is characterised in that：The frequency converter
（10）It is MM430 frequency converters.
7. a kind of sewage treatment control system based on PLC as claimed in claim 1, it is characterised in that：The liquid level difference is passed
Sensor（3）It is the ultrasonic solution potential difference meter of model XL60-YI4000.
8. a kind of sewage treatment control system based on PLC as claimed in claim 1, it is characterised in that：The dissolved oxygen instrument
（5）From the PH/ dissolved oxygen sensing instrument of model SA29-MP525.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621384968.XU CN206289131U (en) | 2016-12-16 | 2016-12-16 | A kind of sewage treatment control system based on PLC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621384968.XU CN206289131U (en) | 2016-12-16 | 2016-12-16 | A kind of sewage treatment control system based on PLC |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206289131U true CN206289131U (en) | 2017-06-30 |
Family
ID=59104760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621384968.XU Expired - Fee Related CN206289131U (en) | 2016-12-16 | 2016-12-16 | A kind of sewage treatment control system based on PLC |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206289131U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108892266A (en) * | 2018-06-21 | 2018-11-27 | 合肥鸿昇自动化科技有限公司 | Sewage treatment control system |
| CN108946840A (en) * | 2018-08-03 | 2018-12-07 | 东莞市达成机械设备制造有限公司 | A kind of sewage disposal device touch screen mainly controls the control method of picture |
| CN109761456A (en) * | 2019-03-21 | 2019-05-17 | 陕西理工大学 | One kind being used for sewage treatment plant's electric control system |
| CN110395840A (en) * | 2019-04-22 | 2019-11-01 | 武义欧润自动化科技有限公司 | A kind of industrial sewage treatment technology and its control system based on PLC |
-
2016
- 2016-12-16 CN CN201621384968.XU patent/CN206289131U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108892266A (en) * | 2018-06-21 | 2018-11-27 | 合肥鸿昇自动化科技有限公司 | Sewage treatment control system |
| CN108946840A (en) * | 2018-08-03 | 2018-12-07 | 东莞市达成机械设备制造有限公司 | A kind of sewage disposal device touch screen mainly controls the control method of picture |
| CN108946840B (en) * | 2018-08-03 | 2021-04-13 | 广东达成环保科技有限公司 | Control method for main control picture of touch screen of sewage treatment equipment |
| CN109761456A (en) * | 2019-03-21 | 2019-05-17 | 陕西理工大学 | One kind being used for sewage treatment plant's electric control system |
| CN110395840A (en) * | 2019-04-22 | 2019-11-01 | 武义欧润自动化科技有限公司 | A kind of industrial sewage treatment technology and its control system based on PLC |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170630 Termination date: 20171216 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |