CN103823418A - PLC control system for urban sewage treatment plants - Google Patents
PLC control system for urban sewage treatment plants Download PDFInfo
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- CN103823418A CN103823418A CN201210465652.3A CN201210465652A CN103823418A CN 103823418 A CN103823418 A CN 103823418A CN 201210465652 A CN201210465652 A CN 201210465652A CN 103823418 A CN103823418 A CN 103823418A
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention discloses a PLC control system for urban sewage treatment plants. The PLC control system comprises equipment and instruments of a treatment workshop, the output ends of the equipment and the instruments are connected with a PLC monitoring system, and the PLC monitoring system communicates with a central control room remote monitoring system arranged in an office area. A distributed monitoring system is adopted to achieve the purposes of hierarchical control, centralized management and risk scattering, and the system has the advantages of complete functions, high intelligence, reliable operation, small investment, quick effectiveness and the like.
Description
Technical field
The present invention relates to a kind of control system, be specifically related to a kind of for municipal sewage plant PLC control system.
Technical background
Concentrating and increasing along with urban population, the house refuse producing is also more and more, to the people's lives environment of dealing with relationship of house refuse, particularly there is every day the municipal effluent of thousands of tons to enter sewer, if do not processed, can pollute lake, great river, affect people's healthy living.Municipal sewage treatment refers to by physical treatment technology, chemical treatment method, physical chemistry treatment technology or biologic treating technique sewage processed, and changes sewage character, makes it not produce harm to environment waters and the measure taked.Municipal sewage treatment is generally divided into three grades: coagulation is that applied physics facture is removed undissolved pollutant and parasitic ovum in sewage; Two stage treatment is that the oxidation operation of various complexity in sewage is degraded to simple material by applying biological facture; Tertiary treatment, is the applied chemistry precipitation method, biochemical process, physical-chemical process etc., removes organism, the inorganic salts etc. of phosphorus in sewage, nitrogen, difficult degradation.More reasonable as for taking which grade processing, should be depending on the processing requirements to final draw-off.
Wherein the processing of municipal effluent is generally successively through coarse rack, pump house are taken out liter, sand setting processing, aeration tank and secondary sedimentation tank are realized sewage processing.Wherein coarse rack processing is to protect the normal operation of follow-up water pump pipeline, equipment for the bulk matter that dams.It is to improve head that pump house is taken out the object rising, to guarantee that sewage can lean on run by gravity to continue each processing structures on the ground later.The object of sand setting processing is to remove in sewage to wrap up in sand, stone and the bulk particle taken, to reduce their sedimentations in follow-up structures, prevents from causing facility silt sand, affects effect, causes wearing and tearing to stop up, and affects the normal operation of line equipment.Then utilize Aeration fan and special aerator to oxygen supply in aeration tank, fundamental purpose is, by the metabolism of microorganism, the most of pollutant in sewage is become to CO2 and H2O.Second pond is thorough clean and dirt water, and mud, water are separated.
Determining of urban sewage treatment process, is according to Urban Water Environment quality requirements, water water quality situation, can determines for the combined factors of the aspects such as technical development state, urban economy situation and the city management service requirement utilized.Because the equipment that wastewater treatment step is many, relate to is many, and complex process, this just need to carry out step control to its processing procedure.
Summary of the invention
The object of the invention is just to provide PLC control system in a kind of municipal sewage plant, reaches step control, centralized management, disperses dangerous object.
In order to achieve the above object, the present invention realizes by following technical proposal:
A kind of municipal sewage plant PLC control system that is used for, comprises equipment, the instrument of processing workshop, and the output terminal of described equipment, instrument is connected with PLC supervisory system, described PLC supervisory system and the Central Control Room long distance control system communication of being located at Office Area.
Described Central Control Room long distance control system comprises two computing machines, the printer being connected with computing machine.
Described PLC supervisory system comprises PLC main website, and PLC main website and described Central Control Room long distance control system are carried out communication; Described PLC main website carries out communication with PLC the first substation, PLC the second substation and PLC the 3rd substation of the equipment instrument for controlling freeing port place outside first phase water treatment facilities instrument, the second stage of mud treatment facility instrument and factory respectively.
Described PLC the first substation, PLC the second substation and PLC the first substation, PLC the second substation and PLC the 3rd substation communicate with one another.
Described PLC main website carries out communication by demodulator and PLC the 3rd substation.
The present invention sets up three grades of controls: equipment instrument on the spot manually, PLC supervisory system and Central Control Room long distance control system.Wherein Central Control Room long distance control system is the compositions such as computing machine and printer, whole division control type control system is carried out to state, communication, data and the information of system configuration management, system monitoring, Real-Time Monitoring, demonstration, processing, the each PLC of control substation, complete and report to the police and report printing.Can result, performance analysis etc. be mail to supervisor Ju Deng government bodies by network at management at factory level layer.
PLC control system requires to technique specialty the various technological parameters that detect, and running status, the malfunction of the equipment such as water pump, gate, coarse rack, fine fack, sand removing device are monitored and controlled.Send Central Control Room computer operator station to complete the monitoring management functions such as indication, record, form and print-on-alarm signal by network.
Wherein the control situation of each equipment is as follows:
Coarse rack is opened, stops to control:
Before and after the coarse rack obtaining according to ultrasonic solution potential difference instrumentation, water level difference is controlled the operation of swinging coarse rack automatically, when water-head reaches setting value, automatically starts grid.In the time that the swinging coarse rack time out of service exceeds setting value, system transfers time control to, is now limited to adjustable design, and upper limit alarm is set.PLC system will be controlled automatically according to software program order start and stop, operation, parking and the safety interlocking protection of worm conveyor, swinging coarse rack machine, and grid maker is shut down rear time delay and stopped worm conveyor.
Fine fack is opened, stops to control:
Fine fack operation in 24 hours, and upper limit alarm is set.PLC system will be controlled order start and stop, operation, parking and the safety interlocking protection of worm conveyor, swinging fine grid machine automatically according to software program; grid maker is shut down rear time delay and is stopped worm conveyor. and two gates of sewage gate gate control are manual or electronic according to liquid level; its run signal is sent into Central Control Room monitoring, does not participate in control.
Biological filter PLC controls and test section: in factory, PLC substation, 2#BAF biological filter is positioned at pulpit, electric substation's low-voltage distribution chamber.Technique specialty is required to the various technological parameters that detect, and running status, the malfunction of the equipment such as water pump, blower fan backwashing pump are monitored and are controlled.And can complete in Central Control Room computer operator station the monitoring management functions such as indication, record, form and print-on-alarm.
Settling pit and settling basin:
Sediment outflow, mud valve are opened/are stopped in the timing of settling pit and settling basin, and the control of grit water separator equipment is carried by equipment vendors can setting control system, and grit water separator should be interlocked with sand dump valve.The automatic operation of sand stirrer is by water inlet electromagnetic flowmeter control, and the running status of sand pump is by microcomputer, it to be opened, between the stopping time control is set.
Valve and the reflux pump of the stirrer of biochemistry pool anaerobic zone, the suction mud scraper of settling basin, sludge reflux pump house are all to be controlled by PLC by microcomputer triggering command.
The equipment control of dehydration machine room:
The equipment of dehydration machine room is mainly undertaken by sludge lifting pump the excess sludge of backflow pump sump is mixed to the task of carrying out processed in proportion with sludge flocculation agent.Mud be dissolved into after certain density flocculating agent mixes, solid particle in mud is condensed into floc sedimentation, and isolate free water, and be then transported on belt mud dewatering equipment, behind drying zone, top, gravity dehydration district, wedge-shaped, filter-press dehydration district, form filter cake and discharge.
According to process characteristic and control requirement, native system adopts distributed control of centralizing and scattering system, establishes three PLC substations, three PLC substations by flow process, and three PLC substations are monitored respectively the equipment operation and control of freeing port outside pool, mud district and factory; Three LC substations are respectively with the equipment of grid, settling pit, air blast machine room and instrument and for measuring electromagnetic flowmeter, ultrasonic flow meter, water-level gauge, the air flowmeter of discharge, and the equipment of dehydration machine room and instrument be electrically connected, and control respectively.Establish a PLC master station again and concentrate substation information and control substation work, substation is concentrated substation information control sub-station work again.Concrete control is divided into: (1) each equipment instrument is by " automatic/to stop/manual " conversion and control state, and " manually " establishes and open/stop button, for manual operation.(2) substation control, with automatic control equipments such as Programmable Logic Controller and industrial control computer systems, scope operation under automatic monitoring.(3) master station's host computer control, mostly is computer monitor and control system, concentrates substation information, carries out various processing, and unifies to control the operation of full factory by substation, meets technique TT&C requirement, and Shi Quan factory moves in optimum condition, is the center of monitoring management
High, the dirigibility of the reliability of PLC and extensibility is strong, interconnectivity is strong in the present invention, and there is high speed processing ability.Advantages such as that so control system of the present invention has is multiple functional, highly intelligent, reliable, reduced investment, instant effect.
Accompanying drawing explanation:
Fig. 1: principle of the invention block diagram.
Embodiment:
Provide embodiment below so that the present invention is specifically described; be necessary to be pointed out that at this following examples are only used to further illustrate the present invention; can not be interpreted as limiting the scope of the invention, the person skilled in the art in this field some nonessential improvement that content is made the present invention according to the present invention and adjustment still belong to protection scope of the present invention.
As shown in Figure 1, a kind of for municipal sewage plant PLC control system, comprise equipment, the instrument 3 of processing workshop, the output terminal of described equipment, instrument 3 is connected with PLC supervisory system 2, described PLC supervisory system 2 and Central Control Room long distance control system 1 communication of being located at Office Area.Described Central Control Room long distance control system 1 comprises computing machine 1-11, computing machine 1-12, respectively connected printer 1-21, printer 1-22.Described PLC supervisory system 2 comprises the 2-1 of PLC main website, and computing machine 1-11, computing machine 1-12 in the 2-1 of PLC main website and described Central Control Room long distance control system 1 carry out respectively communication; The described PLC 2-1 of main website respectively with for control first phase water treatment facilities instrument, the second stage of mud treatment facility instrument and PLC the first substation 2-21, PLC the second substation 2-22 carry out communication; The 2-1 of PLC main website carries out communication by demodulator 2-4 and PLC the 3rd substation 2-23 that controls the equipment instrument of being located at freeing port place outside factory.Described PLC the first substation 2-21, PLC the second substation 2-22 and PLC the first substation 2-31, PLC the second substation 2-32 and PLC the 3rd substation 2-33 communicate with one another.
Native system adopts distributed control of centralizing and scattering system, establishes three PLC substations, three PLC substations by flow process, and three PLC substations are monitored respectively the equipment operation and control of freeing port outside pool, mud district and factory; Three LC substations are respectively with the equipment of grid, settling pit, air blast machine room and instrument and for measuring electromagnetic flowmeter, ultrasonic flow meter, water-level gauge, the air flowmeter of discharge, and the equipment of dehydration machine room and instrument be electrically connected, and control respectively.Establish a PLC master station again and concentrate substation information and control substation work, substation is concentrated substation information control sub-station work again.There is the advantages such as multiple functional, highly intelligent, reliable, reduced investment, instant effect.
Claims (5)
1. one kind for municipal sewage plant PLC control system, comprise equipment, the instrument of processing workshop, it is characterized in that: the output terminal of described equipment, instrument is connected with PLC supervisory system described PLC supervisory system and the Central Control Room long distance control system communication of being located at Office Area.
2. one according to claim 1, for municipal sewage plant PLC control system, is characterized in that: described Central Control Room long distance control system comprises two computing machines, the printer being connected with computing machine.
3. one according to claim 1 for municipal sewage plant PLC control system, is characterized in that: described PLC supervisory system comprises PLC main website, and PLC main website and described Central Control Room long distance control system are carried out communication; Described PLC main website carries out communication with PLC the first substation, PLC the second substation and PLC the 3rd substation of the equipment instrument for controlling freeing port place outside first phase water treatment facilities instrument, the second stage of mud treatment facility instrument and factory respectively.
4. one according to claim 3, for municipal sewage plant PLC control system, is characterized in that: described PLC the first substation, PLC the second substation and PLC the first substation, PLC the second substation and PLC the 3rd substation communicate with one another.
5. one according to claim 3 for municipal sewage plant PLC control system, is characterized in that: described PLC main website carries out communication by demodulator and PLC the 3rd substation.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210465652.3A CN103823418A (en) | 2012-11-17 | 2012-11-17 | PLC control system for urban sewage treatment plants |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210465652.3A CN103823418A (en) | 2012-11-17 | 2012-11-17 | PLC control system for urban sewage treatment plants |
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| CN103823418A true CN103823418A (en) | 2014-05-28 |
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| CN201210465652.3A Pending CN103823418A (en) | 2012-11-17 | 2012-11-17 | PLC control system for urban sewage treatment plants |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104671394A (en) * | 2015-02-07 | 2015-06-03 | 天津诚信环球节能环保科技有限公司 | Rear biological denitrifying filter automatic control system |
| CN106094716A (en) * | 2016-08-26 | 2016-11-09 | 江苏杜氏环保科技有限公司 | It is applied to control system and the method for work thereof of multiple grid |
| CN106227147A (en) * | 2016-08-31 | 2016-12-14 | 马占久 | Control system of sewage treatment plant |
| CN106773882A (en) * | 2015-11-20 | 2017-05-31 | 殷智坚 | Grid nonshared control unit |
| CN108594772A (en) * | 2018-04-17 | 2018-09-28 | 河南华东工控技术有限公司 | A kind of control method for industrial control system transformation |
| CN109709887A (en) * | 2018-12-25 | 2019-05-03 | 中国原子能科学研究院 | Control system for Electromagnetic isotope separator |
| 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 |
| CN110286640A (en) * | 2019-07-22 | 2019-09-27 | 上海同臣环保有限公司 | A kind of deeply de- system electrical design method of sludge |
| CN112707582A (en) * | 2020-11-25 | 2021-04-27 | 国网河北省电力有限公司电力科学研究院 | Pretreatment system for reusing municipal sewage in thermal power plant |
| CN114063577A (en) * | 2021-09-27 | 2022-02-18 | 大唐三门峡发电有限责任公司 | DCS control system of centrifugal dehydrator |
| CN116022871A (en) * | 2023-02-21 | 2023-04-28 | 昆明理工大学 | Water purification treatment cascade feedback PLC automatic control system and control method thereof |
-
2012
- 2012-11-17 CN CN201210465652.3A patent/CN103823418A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104671394A (en) * | 2015-02-07 | 2015-06-03 | 天津诚信环球节能环保科技有限公司 | Rear biological denitrifying filter automatic control system |
| CN106773882A (en) * | 2015-11-20 | 2017-05-31 | 殷智坚 | Grid nonshared control unit |
| CN106094716A (en) * | 2016-08-26 | 2016-11-09 | 江苏杜氏环保科技有限公司 | It is applied to control system and the method for work thereof of multiple grid |
| CN106227147A (en) * | 2016-08-31 | 2016-12-14 | 马占久 | Control system of sewage treatment plant |
| CN108594772A (en) * | 2018-04-17 | 2018-09-28 | 河南华东工控技术有限公司 | A kind of control method for industrial control system transformation |
| CN109709887A (en) * | 2018-12-25 | 2019-05-03 | 中国原子能科学研究院 | Control system for Electromagnetic isotope separator |
| 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 |
| CN110286640A (en) * | 2019-07-22 | 2019-09-27 | 上海同臣环保有限公司 | A kind of deeply de- system electrical design method of sludge |
| CN112707582A (en) * | 2020-11-25 | 2021-04-27 | 国网河北省电力有限公司电力科学研究院 | Pretreatment system for reusing municipal sewage in thermal power plant |
| CN114063577A (en) * | 2021-09-27 | 2022-02-18 | 大唐三门峡发电有限责任公司 | DCS control system of centrifugal dehydrator |
| CN114063577B (en) * | 2021-09-27 | 2024-04-19 | 大唐三门峡发电有限责任公司 | DCS control system of centrifugal dehydrator |
| CN116022871A (en) * | 2023-02-21 | 2023-04-28 | 昆明理工大学 | Water purification treatment cascade feedback PLC automatic control system and control method thereof |
| CN116022871B (en) * | 2023-02-21 | 2024-04-12 | 昆明理工大学 | Water purification treatment cascade feedback PLC automatic control system and control method thereof |
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Application publication date: 20140528 |