CN107399794A - A kind of emergent automatic dosing control system of the water factory for tackling typhoon season heavy showers - Google Patents
A kind of emergent automatic dosing control system of the water factory for tackling typhoon season heavy showers Download PDFInfo
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- CN107399794A CN107399794A CN201611270678.7A CN201611270678A CN107399794A CN 107399794 A CN107399794 A CN 107399794A CN 201611270678 A CN201611270678 A CN 201611270678A CN 107399794 A CN107399794 A CN 107399794A
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- control system
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Classifications
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5209—Regulation methods for flocculation or precipitation
-
- 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
-
- 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
- G05B19/058—Safety, monitoring
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Automation & Control Theory (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a kind of emergent automatic dosing control system of water factory for tackling typhoon season heavy showers, including the filtering of feedforward control system, PLC control system, measuring pump, blender, coagulating sedimentation, clear water reserviors and feedback control system；Feedforward control system is made up of the flow instrument and the online transmissometer 1 for determining influent turbidity of measure flow of inlet water, and the online transmissometer 2 of water turbidity forms after feedback control system is filtered by measure, according to formulaTo determine the optimum dosage of coagulant.Mathematical modeling of the invention by establishing coagulant charging quantity and flow of inlet water and water quality, on the premise of ensuring that water quality treatment is up to standard, the dosage of coagulant is preferably minimized, the operating cost of enterprise is reduced, there is preferable economic benefit, ensures urban drinking water safety, with preferable social benefit, the service life of water factory's facility is extended, reduces the yield of sludge, there is preferable environmental benefit.
Description
Technical field
The invention belongs to water-treatment technology field, and in particular to a kind of water factory for tackling typhoon season heavy showers is emergent automatic
Control system for adding drugs.
Technical background
The problem of drinking water safety is a confession and asked concerning national economy, the problem of water resources in china, water supply faces huge
Big challenge, almost half water source is all substantially because of the pollutant of water head site upstream by different degrees of pollution, its reason
Discharge, such as sanitary sewage and industrial wastewater and agricultural breeding industry.Therefore, the free of contamination reservoir in upstream is as drinking water
The first choice of water head site, if the potable water source district of Ningbo urban is entirely reservoir, reservoir water source is the runoff on reservoir periphery mountain range,
And runoff is derived from precipitation.When there is rainy weather, substantial amounts of rainfall can be stored in the massif topsoil of huge surface area
In earth, such massif topsoil is equivalent to be a huge buffer body, and in general rainfall will not cause to Reservoir Water Quality
Influence, and even if rainfall stop after a period of time in still have certain flow runoff supplement reservoir water.
However, the coastal area particularly area such as Zhejiang and Fujian, almost annual summer all can be by once or several
Secondary typhoon, each typhoon can all bring prolonged heavy showers, and such as No. 23 violent typhoon in 2013 has not only destroyed greatly
The building and facility of amount, the most road in Ningbo and part building is also allowed to be immersed in flood and reach one week as long as, it is seen that platform
The harm for the heavy showers that wind is brought is big.
Architectural Equipment etc. not only can be washed away or flood to the long-time heavy showers that this typhoon triggers, and can also wash away reservoir upstream
Massif topsoil cause reservoir turbidity big ups and downs, such as Ningbo of Zhejiang reservoir, long-term average turbidity substantially 6NTU with
Under, turbidity can reach NTU more than 100 within one day when typhoon triggers heavy showers, the design grave fault with water factory, and conventional feelings
Under condition, Reservoir Water Quality is relatively stable, and coagulant charging quantity is also relatively stable, is substantially periodically finely tuned by observing effluent quality
Coagulant charging quantity, according to the coagulant dosage mode of routine, water quality burst can not be tackled and fluctuated widely, water factory's water outlet will
It is extremely unstable, it is difficult to ensure city dweller's drinking water safety.
The content of the invention
Technical problem solved by the invention is to provide a kind of emergent Automatic Dosing of water factory for tackling typhoon season heavy showers
Control system, it can be filled according to the Automatic Dosing of the different water quality in scene and the data automatic feeding coagulant of online monitoring instruments
Put, water stably reaching standard is handled in the unusual time so as to ensure, so as to ensure that urban water supply water quality safety is reliable.
The present invention adopts the following technical scheme that for achieving the above object：
A kind of emergent automatic dosing control system of the water factory for tackling typhoon season heavy showers, including feedforward control system, PLC
Control system, measuring pump, blender, coagulating sedimentation filtering, clear water reserviors and feedback control system；Feedforward control system by determine into
The flow instrument of water-carrying capacity and the online transmissometer 1 for determining influent turbidity form, and feedback control system was by determining water after filter
The online transmissometer 2 of turbidity forms；Feedforward control system is arranged at the input into Shui Chu, wherein flow instrument and online transmissometer 1
End is connected with water inlet, and the output end of flow instrument and online transmissometer 1 is connected with the input of PLC control system, feedback control
System processed is arranged at coagulating sedimentation filtering rear end, wherein the input of online transmissometer 2 is connected with coagulating sedimentation filtering rear end,
The output end of online transmissometer 2 is connected with PLC control system, and the output end of PLC control system is sequentially connected measuring pump, mixing
Device, coagulating sedimentation filtering；It is characterized in that：Coagulant Automatic Dosing comprises the following steps：
A, the flow of water inlet is determined using flow instrument；
B, the turbidity of water inlet is determined using online transmissometer 1；
C, A and the step B value determined are sent into PLC control system, PLC control system calculates according to the result of measure
Go out coagulant charging quantity, then the dosage is sent to measuring pump, measuring pump and exported coagulant to mixing according to the dosage
In device；
D, blender launches coagulant into water inlet, then mixed water is exported to coagulating sedimentation and filtered；
E, the turbidity of water after filter is crossed using online transmissometer 2 measure coagulating sedimentation；
F, the step E values determined are sent into PLC control system, PLC control system is according to the result judgement of measure
It is no to exceed arranges value, if the automatic alarm if, otherwise calculate dosage according to formula always and added；
The calculating of coagulant charging quantity is according to formula in wherein step D：
Coagulant charging quantity：
k：Correction factor, 0.8≤k≤1.2；
Q：Instantaneous delivery (the m of actual feed water flow gauge3/h)；
a：Index coefficient,
b：Chang Bianliang,
λ：Decoction rate of specific gravity；
N：Decoction percentage.
Beneficial effect：
By using it is of the present invention reply typhoon season heavy showers water factory meet an urgent need automatic dosing control system, according to
The water quality and quantity fluctuation of water inlet adjusts the dosage of coagulant in time, ensures that the usage amount of coagulant reaches optimal.Basis simultaneously
The water quality that feedback control system filters water outlet to coagulating sedimentation is fed back, and ensures that effluent quality is up to standard steadily in the long term.
The present invention is by establishing the mathematical modeling of coagulant charging quantity and flow of inlet water and water quality, it is determined that tackling different water
The optimum dosage of matter water；In addition, the operation of water factory at present is all using online flow of inlet water instrument substantially, water factory's Inlet and outlet water exists
Line transmissometer, the so automatic medicament feeding system solve cost without individually buying online flow instrument and online transmissometer again；
Finally, it is that excessive addition coagulant ensures that effluent quality reaches by rule of thumb generally when influent quality fluctuation is larger
Mark, the automatic dosing control system is by closed-loop control, on the premise of ensuring that water quality treatment is up to standard, by the dosage of coagulant
It is preferably minimized, reduces the operating cost of enterprise, there is preferable economic benefit.
Mathematical modeling of the invention by establishing coagulant charging quantity and flow of inlet water and water quality, pass through PLC and control system
System automatically controls, and ensure that the stability of operation；Using the invention, although influent quality water fluctuates, coagulant charging quantity is equal
It is optimum dosage, effluent water quality stably reaching standard, is also not in dispatch from the factory in the absence of excessive or very few ground dosing coagulant
The exceeded phenomenon of coagulant metal ion in water, urban drinking water safety is ensured, there is preferable social benefit.
Mathematical modeling of the invention by establishing coagulant charging quantity and flow of inlet water and water quality, by coagulant charging quantity
Control extends the service life of water factory's facility, reduces the yield of sludge, have preferable environmental benefit optimal.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and examples：
Fig. 1 is the flow chart of the present invention.
Embodiment
The present invention and its embodiment are described in further detail below in conjunction with the accompanying drawings.
Tackle the emergent automatic dosing control system of water factory of typhoon season heavy showers, including feedforward control system, PLC control
System, measuring pump, blender, coagulating sedimentation filtering, clear water reserviors and feedback control system；Feedforward control system is by measure feed water flow
The flow instrument of amount and the online transmissometer 1 for determining influent turbidity form, water turbidity after feedback control system is filtered by measure
Online transmissometer 2 form；Feedforward control system is arranged at into Shui Chu, wherein the input of flow instrument and online transmissometer 1 with
Water inlet is connected, and the output end of flow instrument and online transmissometer 1 is connected with the input of PLC control system, feedback control system
System is arranged at coagulating sedimentation filtering rear end, wherein the input of online transmissometer 2 is connected with coagulating sedimentation filtering rear end, online
The output end of transmissometer 2 is connected with PLC control system, the output end of PLC control system be sequentially connected measuring pump, blender,
Coagulating sedimentation filters；It is characterized in that：Coagulant Automatic Dosing comprises the following steps：
G, the flow of water inlet is determined using flow instrument；
H, the turbidity of water inlet is determined using online transmissometer 1；
I, A and the step B value determined are sent into PLC control system, PLC control system calculates according to the result of measure
Go out coagulant charging quantity, then the dosage is sent to measuring pump, measuring pump and exported coagulant to mixing according to the dosage
In device；
J, blender launches coagulant into water inlet, then mixed water is exported to coagulating sedimentation and filtered；
K, the turbidity of water after filter is crossed using online transmissometer 2 measure coagulating sedimentation；
L, the step E values determined are sent into PLC control system, PLC control system is according to the result judgement of measure
It is no to exceed arranges value, if the automatic alarm if, otherwise calculate dosage according to formula always and added；
The calculating of coagulant charging quantity is according to formula in wherein step D：
Coagulant charging quantity：
k：Correction factor, 0.8≤k≤1.2；
Q：Instantaneous delivery (the m of actual feed water flow gauge3/h)；
a：Index coefficient；
x：The value of online transmissometer detection during actual water inlet；
b：Chang Bianliang；
λ：Decoction rate of specific gravity；
N：Decoction percentage.
By taking the water factory in coastal area Zhejiang city as an example, the water factory is somebody's turn to do using the free of contamination reservoir water in upstream as water source
Reservoir Water Quality frequency is influenceed by the heavy showers that typhoon triggers, and the water factory applies coagulating sedimentation filtration treatment technique, water outlet internal control turbidity
For 0.1NTU, coagulant is used as using aluminium polychloride (PACl).In use, optimum dosage Y is set first, by right
The Data Collection of water factory's influent quality water and coagulant charging quantity arranges and draws k=during in October, 2013 typhoon " Fitow "
1, Q=4166.7m3/ h, a=1.0686, b=1.266, λ=1.05, N=10%, finally draws Y value.
The arranges value of a reponse system is set as 0.1, by PLC control system by the value of flow instrument and online transmissometer 1
Input and be calculated as coagulant charging quantity, and formulation is sent to measuring pump, measuring pump adds the coagulation specified into blender
The value of online transmissometer 2 and arranges value 0.1 are compared by agent, reponse system online, when the value of online transmissometer 2 is more than 0.1
When alarm immediately.
Pass through the data to water factory's influent quality water during in October, 2015 typhoon " rainbow " and coagulant charging quantity
Compile and draw k=1, Q=4166.7m3/ h, a=1.0002, b=0.5356, λ=1.05, N=10%, finally draws Y
Value.
The arranges value of a reponse system is set as 0.1, by PLC control system by the value of flow instrument and online transmissometer 1
Input and be calculated as coagulant charging quantity, and formulation is sent to measuring pump, measuring pump adds the coagulation specified into blender
The value of online transmissometer 2 and arranges value 0.1 are compared by agent, reponse system online, when the value of online transmissometer 2 is more than 0.1
When alarm immediately.
Claims (1)
- Automatic dosing control system, including feedforward control system, PLC control 1. a kind of water factory for tackling typhoon season heavy showers meets an urgent need System, measuring pump, blender, coagulating sedimentation filtering, clear water reserviors and feedback control system processed；Feedforward control system is intake by measure The flow instrument of flow and the online transmissometer 1 for determining influent turbidity form, and feedback control system is turbid by determining water after filter The online transmissometer 2 of degree forms；Feedforward control system is arranged at into Shui Chu, the wherein input of flow instrument and online transmissometer 1 It is connected with water inlet, the output end of flow instrument and online transmissometer 1 is connected with the input of PLC control system, feedback control System is arranged at coagulating sedimentation filtering rear end, wherein the input of online transmissometer 2 is connected with coagulating sedimentation filtering rear end, The output end of line transmissometer 2 is connected with PLC control system, and the output end of PLC control system is sequentially connected measuring pump, mixing Device, coagulating sedimentation filtering；It is characterized in that：Coagulant Automatic Dosing comprises the following steps：A, the flow of water inlet is determined using flow instrument；B, the turbidity of water inlet is determined using online transmissometer 1；C, A and the step B value determined are sent into PLC control system, PLC control system calculates mixed according to the result of measure Solidifying agent dosage, then the dosage is sent to measuring pump, measuring pump and exported coagulant into blender according to the dosage；D, blender launches coagulant into water inlet, then mixed water is exported to coagulating sedimentation and filtered；E, the turbidity of water after filter is crossed using online transmissometer 2 measure coagulating sedimentation；F, the step E values determined are sent into PLC control system, whether PLC control system surpasses according to the result judgement of measure Go out arranges value, if the automatic alarm if, otherwise calculate dosage according to formula always and added；The calculating of coagulant charging quantity is according to formula in wherein step D：Coagulant charging quantity：k：Correction factor, 0.8≤k≤1.2；Q：Instantaneous delivery (the m of actual feed water flow gauge3/h)；a：Index coefficient,b：Chang Bianliang,λ：Decoction rate of specific gravity；N：Decoction percentage.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611270678.7A CN107399794A (en) | 2016-12-28 | 2016-12-28 | A kind of emergent automatic dosing control system of the water factory for tackling typhoon season heavy showers |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611270678.7A CN107399794A (en) | 2016-12-28 | 2016-12-28 | A kind of emergent automatic dosing control system of the water factory for tackling typhoon season heavy showers |
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| CN107399794A true CN107399794A (en) | 2017-11-28 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108658287A (en) * | 2018-04-25 | 2018-10-16 | 江苏大学 | A kind of Sewage advanced treatment control system and control method |
| CN109264840A (en) * | 2018-11-19 | 2019-01-25 | 山信软件股份有限公司 | A kind of horizontal sedimentation tank control system for adding drugs |
| CN109592760A (en) * | 2019-01-23 | 2019-04-09 | 重庆工程职业技术学院 | The intelligent dosing system of clean water treatment factory |
| CN111233120A (en) * | 2020-02-28 | 2020-06-05 | 深圳市长隆科技有限公司 | Defluorinating agent automatic reagent feeding system |
| CN114506912A (en) * | 2021-12-28 | 2022-05-17 | 华航环境发展有限公司 | Water plant control method and system based on operation cost analysis |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101659462A (en) * | 2009-09-18 | 2010-03-03 | 河海大学 | Automatic dosing control system of coagulant and operation method |
| CN202609995U (en) * | 2012-03-05 | 2012-12-19 | 长沙理工大学 | Automatic dosing device for clarification tank coagulant |
-
2016
- 2016-12-28 CN CN201611270678.7A patent/CN107399794A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101659462A (en) * | 2009-09-18 | 2010-03-03 | 河海大学 | Automatic dosing control system of coagulant and operation method |
| CN202609995U (en) * | 2012-03-05 | 2012-12-19 | 长沙理工大学 | Automatic dosing device for clarification tank coagulant |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108658287A (en) * | 2018-04-25 | 2018-10-16 | 江苏大学 | A kind of Sewage advanced treatment control system and control method |
| CN109264840A (en) * | 2018-11-19 | 2019-01-25 | 山信软件股份有限公司 | A kind of horizontal sedimentation tank control system for adding drugs |
| CN109592760A (en) * | 2019-01-23 | 2019-04-09 | 重庆工程职业技术学院 | The intelligent dosing system of clean water treatment factory |
| CN109592760B (en) * | 2019-01-23 | 2021-09-21 | 重庆工程职业技术学院 | Intelligent dosing system of water purification plant |
| CN111233120A (en) * | 2020-02-28 | 2020-06-05 | 深圳市长隆科技有限公司 | Defluorinating agent automatic reagent feeding system |
| CN114506912A (en) * | 2021-12-28 | 2022-05-17 | 华航环境发展有限公司 | Water plant control method and system based on operation cost analysis |
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Application publication date: 20171128 |