CN107697991A - A kind of accurate dosing system of running water chlorine residue and its control method with closed-loop control - Google Patents
A kind of accurate dosing system of running water chlorine residue and its control method with closed-loop control Download PDFInfo
- Publication number
- CN107697991A CN107697991A CN201711165977.9A CN201711165977A CN107697991A CN 107697991 A CN107697991 A CN 107697991A CN 201711165977 A CN201711165977 A CN 201711165977A CN 107697991 A CN107697991 A CN 107697991A
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- water
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- detecting instrument
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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
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- 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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention provides a kind of accurate dosing system of waterworks chlorine residue and its control method with closed-loop control, system includes inlet pipeline, it is provided with inlet pipeline into water residual chlorine detecting instrument and flow of inlet water detector, water inlet residual chlorine detecting instrument and flow of inlet water detector are respectively connected with PLC control cabinet, measuring pump is connected with PLC control cabinet, chlorine-containing disinfecting pond is connected with measuring pump, measuring pump is connected with the chlorination point on inlet pipeline, inlet pipeline is connected with tank, outlet pipeline is connected with tank, water outlet residual chlorine detecting instrument is connected with outlet pipeline, water outlet residual chlorine detecting instrument is connected with PLC control cabinet.Beneficial effects of the present invention：Real-time Feedback can be carried out to chlorination effect, and on this basis, chlorine dosage is automatically controlled by PLC, form the process of a Real-time Feedback adjustment, finally reach the optimal effectiveness of chlorination, the real-time of chlorine content detection and amendment in running water is ensure that, while avoids the triviality of artificial collection water sample and measurement.
Description
Technical field
The invention belongs to water-treatment technology field, and in particular to a kind of waterworks chlorine residue with closed-loop control precisely adds
System and its control method.
Background technology
Waterworks is typically using the method that liquor natrii hypochloritis's sterilization is added in water inlet, the control of manual adjustment measuring pump
Add the amount of sodium hypochlorite；More than 30 minutes water factory's outlet detection output water chlorine contents of minimum effect, national regulation go out after chlorination
Factory water chlorine residue 0.3-0.8ppm, Terminal tap water chlorine content are more than 0.05ppm.If the chlorine content that dispatches from the factory is unqualified, it is necessary to adjust again
The whole dosage for adding measuring pump, then etc. 30 minutes detection chlorine content determine dosage；Chlorine content and dosage, amount of inlet water,
Influent quality is relevant, and water use peak phase amount of inlet water is big, and water usage at night is few, and amount of inlet water is few；Spring, summer temperature are high, it is desirable to
Chlorine dosage is high, and surface water rainy season requires that chlorine dosage is high；Present waterworks worker leans on experience, true manually according to output water chlorine content
Determine dosage, the sense of responsibility, technical experience value to worker require high.
The content of the invention
The technical problem to be solved in the present invention is how to provide a kind of waterworks chlorine residue with closed-loop control precisely to add
System and its control method, it is intended to solve above-mentioned technical problem.
To achieve the above object, the technical scheme taken of the present invention is：
A kind of accurate dosing system of running water chlorine residue with closed-loop control, including inlet pipeline, set on the inlet pipeline
It is equipped with into water residual chlorine detecting instrument and flow of inlet water detector, the water inlet residual chlorine detecting instrument and flow of inlet water detector and is respectively connected with
PLC control cabinet, measuring pump is connected with the PLC control cabinet, chlorine-containing disinfecting pond, the measuring pump are connected with the measuring pump
It is connected with the chlorination point on inlet pipeline, the inlet pipeline is connected with tank, and outlet pipeline is connected with the tank,
Water outlet residual chlorine detecting instrument is connected with the outlet pipeline, the water outlet residual chlorine detecting instrument is connected with PLC control cabinet.
Further, the water inlet residual chlorine detecting instrument, flow of inlet water detector, measuring pump and water outlet residual chlorine detecting instrument are logical
Signal wire is crossed to be connected with PLC control cabinet.
A kind of control method of the accurate dosing system of running water chlorine residue with closed-loop control, comprises the following steps：
S 1. gathers to enter more than factory's water from what water inlet residual chlorine detecting instrument and flow of inlet water detector measured by PLC control cabinet
Chlorine number and flow value；
S2.PLC switch boards factory's water flow value and enter factory's water chlorine content according to entering for detecting, calculate and add sodium hypochlorite
The amount of solution, and control metering pump work；
S3. measuring pump starts to draw the liquor natrii hypochloritis in chlorine-containing disinfecting pond after receiving the information of PLC control cabinet transmission,
Liquor natrii hypochloritis is added into factory's water by chlorination point；
S4. the factory's water that enters for adding liquor natrii hypochloritis is stored into tank, and is exported water by outlet pipe；
S5. the chlorine content of output water residual chlorine detecting instrument detection output water on outlet pipe, and the chlorine residue that will be detected are arranged on
Value is sent to PLC control cabinet；
S6.PLC switch boards receive the chlorine content from output water, and in combination with the chlorine content for entering factory's water and enter factory's water
Flow value repeat step S3 to S5 carry out dosage amendment, adjust dosage, output water chlorine content is maintained at relatively stable
Numerical value.
Compared with prior art, the present invention has the advantages that：Automatic data collection enters factory's water-carrying capacity detection and enters factory's water
Chlorine residue detected value, changed according to the chlorine residue value changes and water for entering factory's water, calculate the dosage of sodium hypochlorite；According to chlorine residue of dispatching from the factory
Value, dosage amendment is carried out in time, adjust dosage, output water chlorine content is maintained at metastable numerical value, energy of the present invention
It is enough that Real-time Feedback is carried out to chlorination effect, and on this basis, chlorine dosage is automatically controlled by PLC, form one in real time instead
The process of adjustment is presented, finally reaches the optimal effectiveness of chlorination, ensure that the real-time of chlorine content detection and amendment in running water, together
When avoid the triviality of artificial collection water sample and measurement.
Brief description of the drawings
Fig. 1 is a kind of accurate dosing system of waterworks chlorine residue with closed-loop control of the present invention；
Wherein：
1st, inlet pipeline；2nd, flow of inlet water detector；3rd, chlorination point；4th, tank；5th, outlet pipe；6th, chlorine residue of intaking is examined
Survey instrument；7th, PLC control cabinet；8th, measuring pump；9th, chlorine-containing disinfecting pond；10th, output water residual chlorine detecting instrument.
Embodiment
With reference to the accompanying drawings and examples, the embodiment of the present invention is described in further detail.Implement below
Example is used to illustrate the present invention, but is not limited to the scope of the present invention.
As shown in figure 1, the invention provides a kind of accurate dosing system of waterworks chlorine residue with closed-loop control, including enter
Water lines 1, it is provided with the inlet pipeline 1 into water residual chlorine detecting instrument 6 and flow of inlet water detector 2, the water inlet chlorine residue inspection
Survey instrument 6 and flow of inlet water detector 2 is respectively connected with PLC control cabinet 7, measuring pump 8, the meter are connected with the PLC control cabinet 7
Chlorine-containing disinfecting pond 9 is connected with amount pump 8, the measuring pump 8 is connected with the chlorination point 3 on inlet pipeline 1, the inlet pipeline 1
Tank 4 is connected with, outlet pipeline 5 is connected with the tank 4, water outlet chlorine residue detection is connected with the outlet pipeline 5
Instrument 10, the water outlet residual chlorine detecting instrument 10 are connected with PLC control cabinet 7.
Wherein, the water inlet residual chlorine detecting instrument 6, flow of inlet water detector 2, measuring pump 8 and water outlet residual chlorine detecting instrument 10 are equal
It is connected by signal wire with PLC control cabinet 7.
In addition, present invention also offers a kind of control method of the accurate dosing system of running water chlorine residue with closed-loop control,
Comprise the following steps：
S 1. gathers to enter from what water inlet residual chlorine detecting instrument 6 and flow of inlet water detector 2 detected by PLC control cabinet 7
Factory's water chlorine content and flow value；
S2.PLC switch boards 7 factory's water flow value and enter factory's water chlorine content according to entering for detecting, calculate and add hypochlorous acid
The amount of sodium solution, and control measuring pump 8 to work；
Data processing is carried out using PLC programmable controllers；Wherein, PLC programmable controllers carry 485 ports,
Factory's water instantaneous delivery data are entered in collection waterworks；Residual chlorine detecting instrument can continuously detect the chlorine content in running water, and by chlorine residue
Value is converted to standard analog signal, and PLC programmable controllers carry AD conversion module, can be converted to standard analog signal
Digital quantity；PLC programmable controllers carry D/A conversion module, and digital quantity can be converted to master die analog quantity signal output；
S3. it is molten to receive the sodium hypochlorite for starting to draw in chlorine-containing disinfecting pond 9 after the information of the transmission of PLC control cabinet 7 for measuring pump 8
Liquid, liquor natrii hypochloritis is added into factory's water by chlorination point 3, adds measuring pump and use band external analog signal to control,
To adjust the measuring pump of flow proportional；
S4. the factory's water that enters for adding liquor natrii hypochloritis is stored into tank 4, and is exported water by outlet pipeline 5；
S5. the chlorine content of the upper water-out residual chlorine detecting instrument 10 of outlet pipeline 5 detection output water is arranged on, and more than detecting
Chlorine number is sent to PLC control cabinet 7；
S6.PLC switch boards 7 receive the chlorine content from output water, and in combination with the chlorine content for entering factory's water and enter factory
The flow value repeat step S3 to S5 of water carries out dosage amendment, adjusts dosage, output water chlorine content is maintained at relatively steady
Fixed numerical value.
In order to facilitate the above-mentioned technical proposal of the present invention is understood, below by way of specific occupation mode to the above-mentioned of the present invention
Technical scheme is described in detail.
Now set following parameter：
Flow of inlet water (m3/h)：A；
Enter factory's water chlorine residue (ppm)：B；
Output water chlorine residue (ppm)：C；
Add measuring pump maximum dosage (L/h)：D；
Output water chlorine residue setting value ppm：E；It is set as 0.5；(national standard 0.3-0.8)；
Add coefficient：F；
Waterworks chlorine dosage ppm：G；It is set as 1；1-1.5 (design dosage)
Sodium hypochlorite original liquid concentration (g/L)：H
Adding needs sodium hypochlorite stoste amount (L/h)：K
Specific control process is as follows：
By 485 ports of PLC programmable controllers, read waterworks and enter factory's water instantaneous delivery data；Pass through AD
Modular converter, PLC programmable controllers will enter factory water chlorine content B, output water chlorine content C is converted to digital quantity, and according to first
Beginning chlorine content determines to add scheme：
1)B<0.01：Entering in factory's water does not have chlorine residue, is added according to waterworks chlorine dosage G
A* (G+F)=add needs available chlorine；
A* (G+F)/H=, which is added, needs sodium hypochlorite stoste amount；
2)0.5>B>0.05：There is chlorine residue suitably to mend chlorine in water inlet
A* (E-B+F)=add needs available chlorine；
A* (E-B+F)/H=, which is added, needs sodium hypochlorite stoste amount；
3)B>0.5, water inlet chlorine residue is qualified, does not need chlorination currently；
4) adding measuring pump 30 minutes, (waterworks processing time, i.e. running water are from factory is entered to the time used of dispatching from the factory) examines afterwards
Output water chlorine residue C is surveyed, it is determined that adding coefficient F, the output water chlorine residue C of detection in every ten minutes later adds coefficient F, E- to correct
C=F；
4.1) initial value：F=0；
4.2) F ＞ 0, it was demonstrated that appearance water chlorine residue is low, and dosage is inadequate, increases dosage according to F values；
4.3) F=0, it was demonstrated that dosage is suitable, without adjusting dosage；
4.4) F ＜ 0, it was demonstrated that the chlorine residue of appearance water is higher than setting value, and dosage is excessive, and dosage is reduced according to F values；
5) driving measuring pump adds liquor natrii hypochloritis
5.1) K/D=adds measuring pump and adds ratio；
5.2) will add measuring pump add proportional digital amount by D/A conversion module be converted to master die analog quantity signal drive
Measuring pump is added, makes to add the corresponding liquor natrii hypochloritis's amount of measuring pump output.
The present invention has the advantages that：Automatic data collection enters factory's water-carrying capacity detection and enters factory's water chlorine residue detected value, according to
Enter chlorine residue value changes and the water change of factory's water, calculate the dosage of sodium hypochlorite；According to the chlorine content that dispatches from the factory, added in time
Amount amendment, adjusts dosage, output water chlorine content is maintained at metastable numerical value, the present invention can be carried out to chlorination effect
Real-time Feedback, and on this basis, chlorine dosage is automatically controlled by PLC, the process of a Real-time Feedback adjustment is formed, finally
Reach the optimal effectiveness of chlorination, ensure that the real-time of chlorine content detection and amendment in running water, while avoid artificial collection
Water sample and the triviality of measurement.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.
Claims (3)
- A kind of 1. accurate dosing system of running water chlorine residue with closed-loop control, it is characterised in that：Including inlet pipeline, the water inlet It is provided with pipeline into water residual chlorine detecting instrument and flow of inlet water detector, the water inlet residual chlorine detecting instrument and flow of inlet water detector PLC control cabinet is respectively connected with, measuring pump is connected with the PLC control cabinet, chlorine-containing disinfecting pond, institute are connected with the measuring pump State measuring pump to be connected with the chlorination point on inlet pipeline, the inlet pipeline is connected with tank, is connected with the tank Outlet pipeline, water outlet residual chlorine detecting instrument is connected with the outlet pipeline, and the water outlet residual chlorine detecting instrument connects with PLC control cabinet Connect.
- 2. the running water chlorine residue accurate dosing system according to claim 1 with closed-loop control, it is characterised in that：It is described enter Water residual chlorine detecting instrument, flow of inlet water detector, measuring pump and water outlet residual chlorine detecting instrument are connected by signal wire and PLC control cabinet Connect.
- A kind of 3. control of accurate dosing system of running water chlorine residue with closed-loop control according to claim any one of 1-2 Method, it is characterised in that：Comprise the following steps：S1. gathered by PLC control cabinet and enter factory's water chlorine content from what water inlet residual chlorine detecting instrument and flow of inlet water detector measured And flow value；S2.PLC switch boards factory's water flow value and enter factory's water chlorine content according to entering for detecting, calculate and add liquor natrii hypochloritis Amount, and control metering pump work；S3. measuring pump starts to draw the liquor natrii hypochloritis in chlorine-containing disinfecting pond after receiving the information of PLC control cabinet transmission, and will Liquor natrii hypochloritis is added into factory's water by chlorination point；S4. the factory's water that enters for adding liquor natrii hypochloritis is stored into tank, and is exported water by outlet pipe；S5. the chlorine content of output water residual chlorine detecting instrument detection output water on outlet pipe is arranged on, and the chlorine content detected is sent out It is sent to PLC control cabinet；S6.PLC switch boards receive the chlorine content from output water, and in combination with entering the chlorine content of factory's water and enter the stream of factory's water Value repeat step S3 to S5 carries out dosage amendment, adjusts dosage, output water chlorine content is maintained at metastable number Value.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711165977.9A CN107697991A (en) | 2017-11-21 | 2017-11-21 | A kind of accurate dosing system of running water chlorine residue and its control method with closed-loop control |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711165977.9A CN107697991A (en) | 2017-11-21 | 2017-11-21 | A kind of accurate dosing system of running water chlorine residue and its control method with closed-loop control |
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| CN201711165977.9A Pending CN107697991A (en) | 2017-11-21 | 2017-11-21 | A kind of accurate dosing system of running water chlorine residue and its control method with closed-loop control |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490032A (en) * | 2018-06-01 | 2018-09-04 | 苏州明柏仪器有限公司 | A kind of chlorine residue on-line detecting system |
| CN109336243A (en) * | 2018-10-24 | 2019-02-15 | 西安建筑科技大学 | A kind of method and system of complex loop control secondary water-supply chlorination |
| CN109928483A (en) * | 2019-05-06 | 2019-06-25 | 重庆昕晟环保科技有限公司 | It is a kind of based on intelligent algorithm automatically control secondary water-supply add chlorination system |
| CN110803802A (en) * | 2019-11-21 | 2020-02-18 | 湖南俊翔科技发展有限公司 | Automatic clean system of water works |
| CN111742826A (en) * | 2020-06-28 | 2020-10-09 | 北京市水科学技术研究院 | Residual chlorine concentration control method and device and irrigation equipment |
| CN113526633A (en) * | 2021-07-26 | 2021-10-22 | 中国科学院生态环境研究中心 | Method for inhibiting growth of conditional pathogens in water at end of drinking water pipe network |
| CN114229989A (en) * | 2021-11-23 | 2022-03-25 | 郑州清源智能装备科技有限公司 | Centralized water plant intelligent dosing method and dosing system based on water quality instrument |
| CN114620883A (en) * | 2022-04-19 | 2022-06-14 | 广东粤海水务检测技术有限公司 | Automatic real-time control system for halogenated hydrocarbon in tap water |
| CN114911193A (en) * | 2022-07-19 | 2022-08-16 | 武汉华信数据系统有限公司 | Water works chlorination control method and system |
| CN115092995A (en) * | 2022-07-08 | 2022-09-23 | 苏州久征水务科技有限公司 | Intelligent disinfection system for secondary water supply pump station and using method |
| CN115583715A (en) * | 2022-12-08 | 2023-01-10 | 浙江浙能技术研究院有限公司 | Heat-engine plant cooling water bactericide adding system and operation method |
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| CN106335977A (en) * | 2016-09-08 | 2017-01-18 | 武汉长江仪器自动化研究所有限公司 | Tap water chlorination control method and system |
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| CN1114756A (en) * | 1995-03-22 | 1996-01-10 | 王大志 | Computer optimization controlling method of chlorine demand for water-purifying process |
| CN203741174U (en) * | 2013-12-06 | 2014-07-30 | 重庆市炬泉环保工程有限公司 | Intelligent chlorine addition wastewater treatment system |
| CN106335977A (en) * | 2016-09-08 | 2017-01-18 | 武汉长江仪器自动化研究所有限公司 | Tap water chlorination control method and system |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490032A (en) * | 2018-06-01 | 2018-09-04 | 苏州明柏仪器有限公司 | A kind of chlorine residue on-line detecting system |
| CN109336243A (en) * | 2018-10-24 | 2019-02-15 | 西安建筑科技大学 | A kind of method and system of complex loop control secondary water-supply chlorination |
| CN109928483A (en) * | 2019-05-06 | 2019-06-25 | 重庆昕晟环保科技有限公司 | It is a kind of based on intelligent algorithm automatically control secondary water-supply add chlorination system |
| CN109928483B (en) * | 2019-05-06 | 2019-10-25 | 重庆昕晟环保科技有限公司 | It is a kind of based on intelligent algorithm automatically control secondary water-supply add chlorination system |
| CN110803802A (en) * | 2019-11-21 | 2020-02-18 | 湖南俊翔科技发展有限公司 | Automatic clean system of water works |
| CN111742826A (en) * | 2020-06-28 | 2020-10-09 | 北京市水科学技术研究院 | Residual chlorine concentration control method and device and irrigation equipment |
| CN113526633A (en) * | 2021-07-26 | 2021-10-22 | 中国科学院生态环境研究中心 | Method for inhibiting growth of conditional pathogens in water at end of drinking water pipe network |
| CN114229989A (en) * | 2021-11-23 | 2022-03-25 | 郑州清源智能装备科技有限公司 | Centralized water plant intelligent dosing method and dosing system based on water quality instrument |
| CN114620883A (en) * | 2022-04-19 | 2022-06-14 | 广东粤海水务检测技术有限公司 | Automatic real-time control system for halogenated hydrocarbon in tap water |
| CN115092995A (en) * | 2022-07-08 | 2022-09-23 | 苏州久征水务科技有限公司 | Intelligent disinfection system for secondary water supply pump station and using method |
| CN115092995B (en) * | 2022-07-08 | 2024-04-05 | 苏州久征水务科技有限公司 | Intelligent disinfection system for secondary water supply pump station and use method |
| CN114911193A (en) * | 2022-07-19 | 2022-08-16 | 武汉华信数据系统有限公司 | Water works chlorination control method and system |
| CN114911193B (en) * | 2022-07-19 | 2022-11-15 | 武汉华信数据系统有限公司 | Water works chlorination control method and system |
| CN115583715A (en) * | 2022-12-08 | 2023-01-10 | 浙江浙能技术研究院有限公司 | Heat-engine plant cooling water bactericide adding system and operation method |
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Application publication date: 20180216 |