CN112083683A - Water treatment control system - Google Patents
Water treatment control system Download PDFInfo
- Publication number
- CN112083683A CN112083683A CN201910518676.2A CN201910518676A CN112083683A CN 112083683 A CN112083683 A CN 112083683A CN 201910518676 A CN201910518676 A CN 201910518676A CN 112083683 A CN112083683 A CN 112083683A
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- CN
- China
- Prior art keywords
- control system
- plc
- water treatment
- sludge
- plc control
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/054—Input/output
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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
- C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- 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
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
-
- 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
- C02F3/006—Regulation methods for biological treatment
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/11—Plc I-O input output
- G05B2219/1103—Special, intelligent I-O processor, also plc can only access via processor
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Testing And Monitoring For Control Systems (AREA)
Abstract
The invention relates to the technical field of water treatment, in particular to a water treatment control system. A water treatment control system comprises a plurality of PLC substation control systems, wherein the plurality of PLC substation control systems are connected with a monitoring computer, an engineer computer, a monitoring server and a network printer through an optical fiber ring network and an industrial exchange device, and each PLC substation control system comprises a thick grating PLC control system, a thin grating sand setting control system, a biochemical reaction tank PLC control system, a secondary sedimentation tank PLC control system, a final sedimentation tank PLC control system, a sludge concentration PLC control system, a disinfection system PLC control system and a water supply and outlet PLC control system. The technical scheme provided by the invention has high automation degree, avoids the hysteresis of manual control, and effectively saves the production cost and the production efficiency.
Description
Technical Field
The invention relates to the technical field of water treatment, in particular to a water treatment control system.
Background
With the increase of national economy and the enhancement of public environmental awareness, the automatic sewage treatment technology has come up with unprecedented development opportunities. A new sewage treatment technology with high efficiency and low energy consumption is proposed and researched in the national middle and long-term scientific and technological development planning. Therefore, the research result of the invention has wide application prospect. The excellent control system can save the operating cost of sewage treatment, and is also the key for reducing and coping with the occurrence of abnormal working conditions and ensuring the normal operation of the sewage treatment process. In addition, by improving the automation level of the sewage treatment process, the operation management and the operation personnel can be effectively reduced, and the operation cost is reduced. The existing sewage control system mostly uses PID control, and the main problem of the PID control is the parameter setting problem. At present, most PID control parameters are set by depending on engineering experience of workers, and experience methods such as trial and error are adopted, so that the parameter setting method has the problems of long time consumption, easiness in causing accidents, low setting quality, influence on production in the setting period and the like. As the sewage treatment system model is a variable parameter system, the specific model of the system is changed along with the difference of the quality and the quantity of the inlet water. For such a system, the problem of setting the PID control parameters is more prominent, so that precise control cannot be performed and energy consumption cannot be reduced.
Disclosure of Invention
The invention provides an automatic control system for water treatment, which adopts the following technical scheme for achieving the purpose: the utility model provides a water treatment control system, includes a plurality of PLC substation control systems, and a plurality of substation PLC control systems pass through optic fibre looped netowrk and industrial switching device and monitor computer, engineer's computer, monitoring server, network printer link to each other, PLC substation control system includes thick grid PLC control system, thin grid sand setting PLC control system, biochemical reaction pond PLC control system, two heavy pond PLC control system, sink pond PLC control system, mud concentration PLC control system, disinfection system PLC control system, the PLC control system that goes out water of sinking.
Preferably, the monitoring Server is provided with a network version RSVIEWSE configuration software Server end which is responsible for storing operation files and operation data, sending the data to the water plant local area network through an RsSQL Server, connecting the water plant local area network and the hardware firewall WLMA-100TX3, and preventing unauthorized users in the water plant local area network from accessing the automatic control system network by setting a security policy of the firewall.
Preferably, the engineer computer is operable to debug and repair the faults caused by the respective field controller software using the programming software.
Preferably, the thick grid PLC control system comprises liquid level difference meters arranged on two sides of the thick grid, the thick grid PLC controller judges the blocking condition of the thick grid through the liquid level difference on the two sides of the thick grid, if the liquid level difference is higher than a preset value, the thick grid PLC controller controls the grid machine to clean sludge to ensure water passing, and the thick grid PLC controller is set to automatically open and close the thick grid after a certain time interval.
Preferably, the biochemical reaction tank PLC control system comprises a nutrient salt adding pump, a Roots blower and a DO detector which are connected with the biochemical reaction tank PLC controller, and the biochemical reaction tank PLC controller controls the Roots blower to operate according to the comparison between the feedback value and the set value of the DO detector.
Preferably, the secondary sedimentation tank PLC control system comprises a sludge control reflux pump, a sludge discharge pump and a sludge scraper which are connected with the secondary sedimentation tank PLC controller; the mud scraper scrapes mud to the center of the secondary sedimentation tank and flows to the sludge pump room, and a part of sludge reflux pump of sludge-water mixed liquid in the sludge pump room reflows to the biochemical tank; one part is conveyed to a sludge storage tank through a sludge discharge pump.
Preferably, the PLC control system of the final sedimentation tank comprises a COD detector, a BOD detector and a chromaticity tester which are connected with the PLC controller of the final sedimentation tank and arranged at the water outlet.
Preferably, the PLC substation control systems are respectively connected to industrial switches, and the industrial switches connected to the PLC substation control systems are connected to each other through optical fibers. The optical fiber is used as a backbone to avoid signal interference in transmission, and because the price of the optical fiber and an industrial switch is lower, the network system not only ensures the requirement of high-speed data transmission, but also saves equipment investment.
Preferably, the system also comprises a GSM alarm server and a mail alarm server. The alarm adopts a grading alarm mode, and the alarm server can automatically send alarm release short messages aiming at the situation of automatic alarm elimination, so that the field maintenance personnel can reduce the unnecessary workload. The alarm monitoring point can also judge the network link state of each cell PLC and the server in real time, and the stability and the reliability of the monitoring system are fully improved. In addition, the system has an alarm delay function, and a user can dynamically set alarm delay time according to field requirements.
The technical scheme provided by the invention has high automation degree, avoids the hysteresis of manual control, and effectively saves the production cost and the production efficiency.
Drawings
Fig. 1 is a block diagram of an embodiment of the present invention.
Detailed Description
The invention provides an automatic control system for water treatment, which adopts the following technical scheme for achieving the purpose: a water treatment control system comprises a plurality of PLC substation control systems, wherein the plurality of PLC substation control systems are connected with a monitoring computer 10, an engineer computer 13, a monitoring server 12 and a network printer 9 through an optical fiber network and an industrial switch 16 device, and each PLC substation control system comprises a coarse grid PLC control system 1, a fine grid grit PLC control system 2, a biochemical reaction tank PLC control system 3, a secondary sedimentation tank PLC control system 4, a final sedimentation tank PLC control system 5, a sludge concentration PLC control system 6, a disinfection system PLC control system 7 and a water outlet and supply PLC control system 8.
Preferably, the monitoring Server 12 is installed with a network-version RSVIEW SE configuration software Server, which is responsible for storing operation files and operation data, and sends data to the water plant lan through RsSQL Server, and is connected to the water plant lan by using a hardware firewall WLMA-100TX3, and by setting a security policy of the firewall, unauthorized users in the water plant lan are prevented from accessing the autonomous system network.
Preferably, the engineer computer 13 may use programming software to debug and repair the failures caused by the various field controller software.
Preferably, the thick grid PLC control system 1 comprises liquid level difference meters arranged on two sides of the thick grid, the thick grid PLC controller judges the blocking condition of the thick grid through the liquid level difference on the two sides of the thick grid, if the liquid level difference is higher than a preset value, the thick grid PLC controller controls a grid machine to clean sludge to ensure water passing, and the thick grid PLC controller is set to automatically open and close the thick grid after a certain time interval.
Preferably, the biochemical reaction tank PLC control system 3 comprises a nutrient salt adding pump, a Roots blower and a DO detector which are connected with the biochemical reaction tank PLC controller, and the biochemical reaction tank PLC controller controls the Roots blower to operate according to the comparison between the feedback value and the set value of the DO detector.
Preferably, the secondary sedimentation tank PLC control system 4 comprises a sludge control reflux pump, a sludge discharge pump and a sludge scraper which are connected with the secondary sedimentation tank PLC controller; the mud scraper scrapes mud to the center of the secondary sedimentation tank and flows to the sludge pump room, and a part of sludge reflux pump of sludge-water mixed liquid in the sludge pump room reflows to the biochemical tank; one part is conveyed to a sludge storage tank through a sludge discharge pump.
Preferably, the final sedimentation tank PLC control system 5 comprises a COD detector, a BOD detector and a chromaticity tester which are connected with the final sedimentation tank PLC controller and arranged at the water outlet.
Preferably, the PLC substation control systems are respectively connected to the industrial switches 16, and the industrial switches 16 connected to the PLC substation control systems are connected to each other through optical fibers. The optical fiber is used as a backbone to avoid signal interference in transmission, and because the price of the optical fiber and an industrial switch is lower, the network system not only ensures the requirement of high-speed data transmission, but also saves equipment investment.
In conclusion, the technical scheme provided by the invention has high automation degree, eliminates the hysteresis of manual control, and effectively saves the production cost and the production efficiency.
Claims (9)
1. A water treatment control system comprises a plurality of PLC substation control systems, wherein the plurality of PLC substation control systems are connected with a monitoring computer, an engineer computer, a monitoring server and a network printer through an optical fiber ring network and an industrial exchange device, each PLC substation control system comprises a thick grating PLC control system, a thin grating sand setting PLC control system, a biochemical reaction tank PLC control system, a secondary sedimentation tank PLC control system, a final sedimentation tank PLC control system, a sludge concentration PLC control system, a disinfection system PLC control system and a water supply outlet PLC control system, and each PLC substation can carry out field operation and remote operation.
2. The water treatment control system as claimed in claim 1, wherein the monitoring Server is installed with a network version of RSVIEW SE configuration software Server, and is responsible for storing operation files and operation data, and sending data to the water plant lan through RsSQL Server, and is connected with the water plant lan through a hardware firewall WLMA-100TX3, so as to prevent unauthorized users in the water plant lan from accessing the autonomous system network by setting a security policy of the firewall.
3. The water treatment control system of claim 1 wherein the engineer computer is programmed with software to debug and repair faults caused by the field controller software.
4. The water treatment control system as claimed in claim 1, wherein the coarse grid PLC control system comprises liquid level difference meters arranged on two sides of the coarse grid, the coarse grid PLC controller judges the blockage condition of the coarse grid according to the liquid level difference on the two sides of the coarse grid, if the liquid level difference is higher than a preset value, the coarse grid PLC controller controls the grid machine to clean sludge to ensure water passing, and the coarse grid PLC controller is set to automatically open and close the coarse grid after a certain time interval.
5. The water treatment control system as claimed in claim 1, wherein the PLC control system of the biochemical reaction tank includes a nutritive salt feeding pump, a roots blower, and a DO detector connected to the PLC controller of the biochemical reaction tank, and the PLC controller of the biochemical reaction tank controls the roots blower to operate according to a comparison between a feedback value and a set value of the DO detector.
6. The water treatment control system of claim 1, wherein the PLC control system of the secondary sedimentation tank comprises a sludge reflux pump, a sludge discharge pump, and a sludge scraper connected to the PLC controller of the secondary sedimentation tank; the mud scraper scrapes mud to the center of the secondary sedimentation tank and flows to the sludge pump room, and a part of sludge reflux pump of sludge-water mixed liquid in the sludge pump room reflows to the biochemical tank; one part is conveyed to a sludge storage tank through a sludge discharge pump.
7. The water treatment control system of claim 1, wherein the PLC control system of the final sedimentation tank comprises a COD detector, a BOD detector and a chromaticity tester which are connected with the PLC controller of the final sedimentation tank and are arranged at the water outlet.
8. The water treatment control system as claimed in claim 1, wherein said PLC substation control systems are respectively connected to industrial switches, and the industrial switches connected to said PLC substation control systems are connected to each other through optical fibers.
9. The water treatment control system of claim 1, further comprising a GSM alarm server, a mail alarm server.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910518676.2A CN112083683A (en) | 2019-06-15 | 2019-06-15 | Water treatment control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910518676.2A CN112083683A (en) | 2019-06-15 | 2019-06-15 | Water treatment control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112083683A true CN112083683A (en) | 2020-12-15 |
Family
ID=73734246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910518676.2A Withdrawn CN112083683A (en) | 2019-06-15 | 2019-06-15 | Water treatment control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112083683A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2019
- 2019-06-15 CN CN201910518676.2A patent/CN112083683A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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: 20201215 |