CN103592910A - Sewage treatment control system based on PLC - Google Patents
Sewage treatment control system based on PLC Download PDFInfo
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- CN103592910A CN103592910A CN201310517108.3A CN201310517108A CN103592910A CN 103592910 A CN103592910 A CN 103592910A CN 201310517108 A CN201310517108 A CN 201310517108A CN 103592910 A CN103592910 A CN 103592910A
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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 sewage treatment control system based on a PLC. The sewage treatment control system comprises a central control room, a first PLC control station (1), a second PLC control station (2), a third PLC control station (3) and a fourth PLC control station (4). A power module, a communication module, the central control room and the PLC control stations are connected through the Ethernet so that control commands of the central control room can be sent to measurement and control terminals of the PLC through the network to detect and control all the control stations. By the adoption of the treatment control system, cost is low, sewage treatment efficiency is greatly improved, and the sewage treatment control system has excellent economic benefits.
Description
Technical field
The invention belongs to sewage treatment control system, be specifically related to a kind of sewage treatment control system based on PLC.
Background technology
According to the analysis of environmental administration, China's pollution of water mainly comes from industry and cities and towns, and wherein more than 50% sewage is from municipal effluent.Treatment rate of domestic sewage has become the restraining factors that China's quality of water environment improves, in existing sewage disposal system, the artificial wastewater parameters that detects, effect is very undesirable, often data are not accurate, serious waste the time, domestic sewage treatment plant has adopted modern automatic control technology and computer technology mostly, PLC automatic control system has the high feature of reliability of measuring.Wastewater treatment based on PLC has the data acquisition of realization, control command issue function, with this, complete all control commands and data acquisition.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of sewage treatment control system based on PLC in order to improve the operational efficiency of waste water control.
A sewage treatment control system based on PLC, comprises central control room, PLC control station 1, the two PLC control station 2, the three PLC control stations 3 and a 4th PLC control station 4, power module, communication module
Central control room is connected by Ethernet with PLC control station, and the control command that realizes central control room is sent to the detection and control terminal of PLC by network, implement detection and the control of each control station.
Wastewater treatment flow process, first enters coarse grid by sewage, filters out large solid impurity, taking-up may enter lifting water plant subsequently to the influential inorganics of water pump, by sewage pump, rises to certain altitude, arrive fine fack, sand basin, is responsible for desilting to carry out blast aeration by air blast machine room again.Under Action of Gravity Field, heavy inorganic particle precipitates and gets rid of, and the sewage after desilting enters biochemistry pool, remove nitrogen phosphorus wherein, before dispatching from the factory, also need to use liquid disinfection by chlorine, behind V-type filter tank, by row of conduits, removed, sludge part adds medicament flocculation, stirs sedimentation, then mud is transported outward.
Described central control room, the function of man-machine interaction is provided and is provided each PLC control station.Described central control room is the core of system, complete the management of sewage disposal process each several part and control, by high-resolution liquid crystal display, dynamically show the real-time working condition of each technological process section, the trend picture of each technological parameter, operation TT&C software, downloading control parameter, storing history data and alert data.
Described power module, adopts uninterrupted power source that stable electric power supply is provided, for preventing power supply flickering, the system failure that power-off causes.
Described communication module, is the mixed-media network modules mixed-media that central control room is communicated by letter with control station levels, and corresponding address table is set, transmission data and order.
Described PLC control station 1, a two PLC control station 2 and the 3rd PLC control station 3 are the sensors to wastewater treatment scene, and execution unit is implemented observing and controlling.
Described PLC control station also comprises power supply, logic controller, the input of simulation/switching value, the parts such as power drive.Described PLC control station has been realized the collection to field apparatus running status and parameter (as pressure, flow, temperature, pH value etc.), and the order of carrying out central control room.
A described PLC control station 1 is responsible for gathering water factory's influent quality data, and trellis system, the state acquisition of settling system equipment and the control of equipment.The one PLC control station 1 completes two work: the one, and large volume foreign material dispelling as stone, straw in sewage; The 2nd, control the height of water level in sump.
The control technological requirement of lift pump is according to the height of liquid level, automatically to control the start and stop of lift pump; sewage enters a Buffer Pool by water inlet; in Buffer Pool, be provided with coarse rack; fine fack; object is that the large-scale foreign material of straw and so on are excluded; it is controlled at PLC1 liquid level control and timing controlled is set; when adopting liquid level to control; by the front and back liquid level difference of grid, to control the start and stop of grid maker; when liquid level difference reaches on the water level of setting in limited time, a PLC control station 1 can be given an order and be started grid equipment; When water-head be less than setting lower in limited time, grid unit is by the signal stopping that receiving PLC control station 1 and send.
Described the 2nd PLC control station 2, is responsible for gathering CASS pond water quality data.It is a most important ring in whole sewage disposal process.The physical-chemical reaction of sewage in centralized control SBR pond, water is separated with mud, substantially reach the object of clear water, the further dosing of clear water that approaches of the output in the one, CASS pond is processed, reach and remove poisonous microorganism in water, and make water quality reach the emission standard that country allows; Second task is that the mud of discharging in CASS pond is also carried out to dosing processing, and in mud, adds a certain amount of chemical fertilizer, and mud is dried the most at last, becomes a kind ofly can further win benefit in order to agriculture chemical fertilizer Tu，Wei enterprise.
Described the 3rd PLC control station 3 is BAF workstations, is responsible for gathering BAF water quality data, the control of aeration biological filter chamber facility.Aeration phase, fan blower is to oxygenation in reaction tank, and now organic contaminant is decomposed by microbiological oxidation; Precipitate phase, microorganism utilizes remaining further oxygenolysis in water, and at the bottom of active sludge is deposited to pond gradually, it is clear that upper water becomes, and sludge reflux pump is sent part active sludge back to pre-reaction zone, and residual sludge pump is extracted into the unnecessary mud of reaction tank between sludge dewatering.
Described the 4th PLC control station 4 is responsible for gathering V-type filter tank water quality data, and back-purge system, the collection of outlet system equipment state and the control of equipment.The automatic control of V-type filter tank system is mainly the automatic back-flushing function in filter tank.The major equipment that subroutine is controlled has backwashing pump, backwash blower fan, valve and instrument technological parameter, within every two days, carries out a back flush.
, described PLC control station 1, the two PLC control station 2, the three PLC control station 3, the four PLC control stations 4 adopt Mitsubishi PLC, are not subject to environmental limit, have electricity to get final product building network, make resource keep higher utilization factor.
Adopt this process control system, cost is low, has greatly improved sewage treating efficiency, has good economic benefit.
accompanying drawing explanation
Fig. 1 is a kind of wastewater treatment control flow schematic diagram based on PLC of the present invention;
Fig. 2 is the syndeton schematic diagram of a kind of sewage treatment control system based on PLC of the present invention.
Embodiment
A kind of sewage treatment control system based on PLC, comprise central control room, a PLC control station 1, the 2nd PLC control station 2, the 3rd PLC control station 3 and the 4th PLC control station 4, power module, communication module, central control room is connected by Ethernet with PLC control station, the control command that realizes central control room is sent to the detection and control terminal of PLC by network, implement detection and the control of each control station.Central control room, the function of man-machine interaction is provided and is provided each PLC control station.Operation TT&C software, downloading control parameter, storing history data and alert data.The one PLC control station 1 is responsible for gathering water factory's influent quality data, and trellis system, the state acquisition of settling system equipment and the control of equipment.PLC control station 1 completes two work: the one, and large volume foreign material dispelling as stone, straw in sewage; The 2nd, control the height of water level in sump.The 2nd PLC control station 2, is responsible for gathering CASS pond water quality data.It is a most important ring in whole sewage disposal process.The physical-chemical reaction of sewage in centralized control SBR pond, water is separated with mud, substantially reach the object of clear water, the further dosing of clear water that approaches of the output in the one, CASS pond is processed, reach and remove poisonous microorganism in water, and make water quality reach the emission standard that country allows; Second task is that the mud of discharging in CASS pond is also carried out to dosing processing, and in mud, adds a certain amount of chemical fertilizer, and mud is dried the most at last, becomes a kind ofly can further win benefit in order to agriculture chemical fertilizer Tu，Wei enterprise.The 3rd PLC control station 3 is BAF workstations, is responsible for gathering BAF water quality data, the control of aeration biological filter chamber facility.The 4th PLC control station 4 is responsible for gathering V-type filter tank water quality data, and back-purge system, the collection of outlet system equipment state and the control of equipment.Described PLC control station 1, the two PLC control station 2, the three PLC control station 3, the four PLC control stations 4 adopt Mitsubishi PLC.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes instructions of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (5)
1. the sewage treatment control system based on PLC, it is characterized in that: comprise central control room, a PLC control station (1), the 2nd PLC control station (2), the 3rd PLC control station (3) and the 4th PLC control station (4), power module, communication module, central control room is connected by Ethernet with PLC control station, the control command that realizes central control room is sent to the detection and control terminal of PLC by network, implement detection and the control of each control station.
2. the sewage treatment control system based on PLC according to claim 1, is characterized in that:
A described PLC control station (1) is responsible for gathering water factory's influent quality data, and trellis system, the state acquisition of settling system equipment and the control of equipment.
3. the sewage treatment control system based on PLC according to claim 1, is characterized in that:
Described the 2nd PLC control station (2), is responsible for gathering CASS pond water quality data.
4. the sewage treatment control system based on PLC according to claim 1, is characterized in that:
Described the 3rd PLC control station (3) is BAF workstation, is responsible for gathering BAF water quality data, the control of aeration biological filter chamber facility.
5. the sewage treatment control system based on PLC according to claim 1, is characterized in that:
Described the 4th PLC control station (4) is responsible for gathering V-type filter tank water quality data, and back-purge system, the collection of outlet system equipment state and the control of equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310517108.3A CN103592910A (en) | 2013-10-29 | 2013-10-29 | Sewage treatment control system based on PLC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310517108.3A CN103592910A (en) | 2013-10-29 | 2013-10-29 | Sewage treatment control system based on PLC |
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| Publication Number | Publication Date |
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| CN103592910A true CN103592910A (en) | 2014-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310517108.3A Pending CN103592910A (en) | 2013-10-29 | 2013-10-29 | Sewage treatment control system based on PLC |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104238532A (en) * | 2014-10-17 | 2014-12-24 | 成都四为电子信息股份有限公司 | Sewage treatment automatic system |
| 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 |
| CN106896776A (en) * | 2017-03-07 | 2017-06-27 | 北京华宇辉煌生态环保科技股份有限公司 | A kind of scale sludge aerobic fermentation accurate aeration automatic control system |
| CN109074033A (en) * | 2016-04-01 | 2018-12-21 | 凯米罗总公司 | For optimizing cohesion and/or flocculated method and system in water treatment procedure |
-
2013
- 2013-10-29 CN CN201310517108.3A patent/CN103592910A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104238532A (en) * | 2014-10-17 | 2014-12-24 | 成都四为电子信息股份有限公司 | Sewage treatment automatic system |
| 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 |
| CN109074033A (en) * | 2016-04-01 | 2018-12-21 | 凯米罗总公司 | For optimizing cohesion and/or flocculated method and system in water treatment procedure |
| CN106896776A (en) * | 2017-03-07 | 2017-06-27 | 北京华宇辉煌生态环保科技股份有限公司 | A kind of scale sludge aerobic fermentation accurate aeration automatic control system |
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Application publication date: 20140219 |