CN201495125U - System for performing on-line monitoring on residual chlorine in fluid - Google Patents
System for performing on-line monitoring on residual chlorine in fluid Download PDFInfo
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- CN201495125U CN201495125U CN2009200615871U CN200920061587U CN201495125U CN 201495125 U CN201495125 U CN 201495125U CN 2009200615871 U CN2009200615871 U CN 2009200615871U CN 200920061587 U CN200920061587 U CN 200920061587U CN 201495125 U CN201495125 U CN 201495125U
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- residual chlorine
- water
- chlorine residue
- detecting device
- chlorine
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Abstract
The utility model provides a system for performing on-line monitoring on residual chlorine in a fluid, which comprises a first residual chlorine detecting device, a second residual chlorine detecting device arranged at the downstream of the first residual chlorine detecting device, an antichlor adding device arranged between the first residual chlorine detecting device and the second residual chlorine detecting device, and a calculation and control device communicated with the first residual chlorine detecting device, the second residual chlorine detecting device and the antichlor adding device. By performing real-time on-line monitoring on the flow of the inlet water and the residual chlorine concentration, accurately performing on-line adding on sodium thiosulfate by a metering pump or a peristaltic pump, then performing on-line measurement on the residual chlorine concentration of the water added with chlorine, and performing feedback control on the adding quantity according to the residual chlorine concentration, the system of the utility model guarantees the residual chlorine in the water flowing through the devices stable between 0 and 0.02mg/L, and has the advantages of automatically, accurately, stably, rapidly removing the residual chlorine in the water in an on line mode and guaranteeing the concentration of the sodium thiosulfate can not generate harmful effects on the early-warning indicator organism.
Description
Technical field
This practicality relates to online fluid mass supervisory system, is specifically related to the on-line monitoring of chlorine residue in the water quality and removes system.
Background technology
In recent years, the great sudden water pollution incident of China frequently takes place, and wherein very major part betides the urban water supply water source, the water supply security of tap water and people's lives has been produced have a strong impact on.For avoiding or reduce the influence of burst water pollution incident to people's safety, China governments at all levels have set up corresponding early warning mechanism, and one of them important step is set up early warning and monitoring and forecast mechanism exactly.
Because the pollutant kind of the online early-warning monitoring method monitoring of traditional physics and chemistry is very limited, especially have the pollutent of harm can't carry out real time on-line monitoring to many to human health, the theory and the application and development of biological early-warning monitoring method of therefore reacting the water quality comprehensive toxicity is all very rapid.Biological method for early warning relates to life entities such as enzyme, cell or microorganism etc. are low as indicator organism, is indicator organism with high aquatic invertebrate, vertebrates (as fish etc.) perhaps.
In the treatment system of tap water, chlorine is widely used pre-treatment oxygenant and sterilizing agent.Water factory adds chlorine in former water, kill algae and decomposing organic matter, and to improve the processing efficiency of water factory, in water factory's treatment system, a plurality of technological processs need add chlorine and carry out disinfection.Be transported to from water factory user's the process at tap water, certain chlorine residue arranged in the water in order to guarantee have pair microorganism to continue sterilisation effect in the water, must to keep.Because chlorine is a kind of strong oxidizer and disinfectant, to from the cell to the microorganism, all seriously influencing in function to different levels life forms such as hydrocoles, even very low dosage just can cause deactivation of microorganism and the death of hydrocoles (as fish), therefore, when adopting biological method for early warning to carry out the water quality early-warning of chlorinated water, can produce serious disturbance to the early warning result, cause false positive warnings.
Yet, still there are not automatic on-line dechlorination device, equipment or device at present both at home and abroad at the biological early warning of chlorinated water, therefore be necessary to provide a kind of such system, it adopts suitable method that the chlorine that enters early warning system is removed, the dosage of the dechlorination medicament that adds simultaneously can not produce detrimentally affect to indicator organism, uses the key issue that exists at water supply industry thereby solve organism early warning system.
Practical content
One of this practical purpose is to provide the system of chlorine residue in a kind of on-line monitoring fluid, and it can monitor the chlorine residue in the fluid in real time, and reduces the content of the chlorine in the fluid by the interpolation dechlorinating agent according to certain standard.
Another purpose of this practicality is to provide the method for chlorine residue in a kind of on-line monitoring fluid, and it can monitor the chlorine residue in the fluid in real time, and reduces the content of the chlorine in the fluid by the interpolation dechlorinating agent according to certain standard.
Other purposes of this practicality and advantage will become more clear after reading specification sheets.
For achieving the above object, this practicality provides the system of chlorine residue in a kind of on-line monitoring fluid, and this system can monitor and control the chlorine residue in the fluid in real time, and it comprises:
The first chlorine residue proofing unit;
Be arranged on the second chlorine residue proofing unit in the described first chlorine residue proofing unit downstream;
Be arranged on the dechlorinating agent adding set between described first chlorine residue proofing unit and the described second chlorine residue proofing unit; With
The calculating and the control device of communicating by letter with described dechlorinating agent adding set with the described first chlorine residue proofing unit, the described second chlorine residue proofing unit.
In an embodiment of this practicality, described fluid is a liquid.Those skilled in the art can anticipate that this practical system and method also goes for the monitoring of chlorine in other fluids such as gas.
Preferably, described fluid is a water.More preferably, described fluid is source water, waterworks technological process water and output water, pipe network water or effluent of municipal sewage plant.
In an embodiment of this practicality, described system also comprises the flow rate control device of communicating by letter with described calculating and control device.
In an embodiment of this practicality, described dechlorinating agent adding set is volume pump or peristaltic pump.
This practical system mainly is applicable to and is adopting hydrocoles such as microorganism, little algae, water flea and fish and relevant instrument to carry out the pre-treatment of chloride (or dioxide peroxide) water when carrying out water quality pollution early warning.The water quality that is suitable for comprises source water, waterworks technological process water and output water, pipe network water and effluent of municipal sewage plant etc.This practical system is a dechlorinating agent with Sulfothiorine, is the Sulfothiorine stablizer with yellow soda ash, carries out real time on-line monitoring by flow and residual chlorine concentration to water inlet, determines the dosage of Sulfothiorine; Accurately carrying out the online of Sulfothiorine by volume pump or peristaltic pump adds, the residual chlorine concentration of water behind the on-line determination chlorination then, according to residual chlorine concentration, the dosage of feedback control Sulfothiorine, thereby guarantee to be stabilized between 0～0.02mg/L, have in automatic, accurate, stable, quick, the online removal water chlorine residue and guarantee that the concentration of Sulfothiorine does not produce dysgenic advantage to the early warning indicator organism through chlorine residue in the water of device.
Description of drawings
Fig. 1 is the structural representation of this embodiment of practical system;
Fig. 2 is the operational flowchart of an embodiment of this practical system.
Embodiment
Practical principle
The system of chlorine residue is with Sulfothiorine (Na in the on-line monitoring fluid that this practicality provides
2S
2O
3) be dechlorinating agent, with yellow soda ash (Na
2CO
3) be the Sulfothiorine stablizer, carry out real time on-line monitoring by flow and residual chlorine concentration to water inlet, determine the dosage of Sulfothiorine; Accurately carrying out the online of Sulfothiorine by volume pump or peristaltic pump adds, the residual chlorine concentration of water behind the on-line determination chlorination then, according to residual chlorine concentration, the dosage of feedback control Sulfothiorine, thus guarantee to be stabilized between 0～0.02mg/L through chlorine residue in the water of device.
The chemical principle of dechlorinating agent
Dechlorination reagent in the native system adopts Na
2S
2O
3And Na
2CO
3Make a return journey chlorine residue in dewatering of mixed solution, reaction equation is as follows:
Na
2S
2O
3+4Cl
2+5H
2O＝8HCl+2NaHSO
4
Suppose that the chlorine residue (free chlorine) that the first chlorine residue proofing unit is measured is a mg/L, the mass concentration of then required Sulfothiorine is 0.5563 * a mg/L.
The compound method of dechlorinating agent
According to the detected value and the set(ting)value of the first chlorine residue proofing unit, calculate the amount of the chlorine that will remove, to determine the consumption of Sulfothiorine and yellow soda ash.Take by weighing Na
2S
2O
35H
2O places the container of 5L, adds an amount of distilled water, after treating to dissolve fully, adds Na again
2CO
3, then with distilled water diluting to 5L, be stored in the dark container, demarcate accurate concentration with Potassium Iodate.
Those skilled in the art can expect that thinner of using in the compound method of described dechlorinating agent (for example distilled water) and container can change to some extent according to concrete applicable cases.For example, described distilled water can be the refrigerative distilled water (not chloride) that newly boils, to eliminate owing to containing the detection error that chlorine causes in the dechlorinating agent.
Principle of operation and method
The system that this practicality provides can operate according to the following steps:
(a) measure flooding velocity (Q L/min) by flowrate control valve and/or under meter;
(b), detect the contents of residual chlorine (X mg/L) in the water into through the first chlorine residue proofing unit;
(c) setting is then calculated by (X-Y) mg/L and need add pharmaceutical quantities through the chlorine content (Y mg/L) of water after the dechlorination;
(d) add dechlorinating agent by the dechlorinating agent adding set;
(e) add dechlorinating agent after, the second chlorine residue proofing unit detects whether chlorine residue reaches set(ting)value (Ymg/L) in the water: as reach, then no longer add dechlorinating agent; As do not reach, then use measured value K mg/L, substitution above-mentioned steps (c) is proceeded (d), (e) step, to carry out the secondary regulation and control.
Description describes in further detail the system of chlorine residue in this practical on-line monitoring fluid.
With reference to figure 1, Fig. 1 is the structural representation of this practical chlorine residue supervisory system 1, and wherein fluid (for example tap water) flows with direction shown in arrow-S.This practical chlorine residue supervisory system 1 comprises the first chlorine residue proofing unit 100, be positioned at the second chlorine residue proofing unit 200 in the described first chlorine residue proofing unit 100 downstreams, be positioned at described two chlorine residue proofing units (100,200) the dechlorinating agent adding set 300 between, with above-mentioned two chlorine residue proofing units (100,200) and dechlorinating agent adding set 300 keep control of communication devices 500, and the flow rate control device 400 of communicating by letter with described calculating and control device 500.
With reference to figure 2, in operation, at first determine flooding velocity and in calculating and control device 500, set chlorine residue set(ting)value (step 201) by flow rate control device 400 (comprising flowrate control valve and under meter); Subsequently, the initial contents of residual chlorine (step 202) in the first chlorine residue proofing unit, the 100 mensuration fluids; Calculate and control device 500 with initial contents of residual chlorine and set(ting)value comparison, calculate the amount (step 203) of dechlorinating agent to be added according to gained difference and above-mentioned chemical principle; Described dechlorinating agent adding set adds dechlorinating agent (step 204) by the amount that calculates; The final contents of residual chlorine (step 205) that the described second chlorine residue proofing unit 200 is measured in the fluid; Described calculating and control device 500 with final contents of residual chlorine and set(ting)value relatively, if reach set(ting)value then no longer add dechlorinating agent; As do not reach, then with the measured value substitution above-mentioned steps 204 of the second chlorine residue proofing unit 200 and proceed step (205) and step (206), to carry out the secondary regulation and control, until reaching set(ting)value (step 206).
It will be understood by those skilled in the art that described set(ting)value can be scope, for example a 0～0.02mg/L.Should keep rational distance between described two chlorine residue proofing units and between the second chlorine residue proofing unit and the described dechlorinating agent adding set, to obtain more accurately the result and to monitor more accurately.
Though this practicality is described with reference to concrete embodiment, those skilled in the art can make conspicuous change and modification to this practicality by after reading foregoing description, and without prejudice to the intention and the essence of this practicality.This practicality comprises these changes and modification within the scope of the claims intentionally.
Claims (5)
1. the system of chlorine residue in the on-line monitoring fluid, it comprises:
The first chlorine residue proofing unit;
Be arranged on the second chlorine residue proofing unit in the described first chlorine residue proofing unit downstream;
Be arranged on the dechlorinating agent adding set between described first chlorine residue proofing unit and the described second chlorine residue proofing unit; With
The calculating and the control device of communicating by letter with described dechlorinating agent adding set with the described first chlorine residue proofing unit, the described second chlorine residue proofing unit.
2. the described system of claim 1 is characterized in that, described fluid is a liquid.
3. the described system of claim 1 is characterized in that, described fluid is source water, waterworks technological process water and output water, pipe network water or effluent of municipal sewage plant.
4. the described system of claim 1 is characterized in that, described system also comprises the flow rate control device of communicating by letter with described calculating and control device.
5. the described system of claim 1 is characterized in that, described dechlorinating agent adding set is volume pump or peristaltic pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200615871U CN201495125U (en) | 2009-07-31 | 2009-07-31 | System for performing on-line monitoring on residual chlorine in fluid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200615871U CN201495125U (en) | 2009-07-31 | 2009-07-31 | System for performing on-line monitoring on residual chlorine in fluid |
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| Publication Number | Publication Date |
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| CN201495125U true CN201495125U (en) | 2010-06-02 |
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| CN2009200615871U Expired - Lifetime CN201495125U (en) | 2009-07-31 | 2009-07-31 | System for performing on-line monitoring on residual chlorine in fluid |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101907572A (en) * | 2010-08-04 | 2010-12-08 | 聚光科技(杭州)股份有限公司 | Method and device for analyzing water toxicity |
| CN102351303A (en) * | 2011-10-13 | 2012-02-15 | 浙江大学 | Secondary chlorine dosing system based on real-time feedback |
| CN102424464A (en) * | 2011-12-21 | 2012-04-25 | 青岛双瑞海洋环境工程有限公司 | Elimination method of total residual oxidants (TRO) |
| CN102874890A (en) * | 2012-09-06 | 2013-01-16 | 张俊峰 | Application of on-line type residual chlorine detector to monitoring residual chlorine removal capacity of hemodialysis water treatment system in real time |
| CN104020068A (en) * | 2014-04-29 | 2014-09-03 | 首钢总公司 | Device and method for detecting dechlorinating performance of dechlorinating agent |
| CN104714049A (en) * | 2013-12-17 | 2015-06-17 | 国际商业机器公司 | Computer based fluid flow velocity estimation from concentrations of a reacting constituent for products and services |
| CN104891613A (en) * | 2015-05-25 | 2015-09-09 | 北京市自来水集团有限责任公司 | Direct-current electronic control chlorinating device |
| CN105021785A (en) * | 2015-05-20 | 2015-11-04 | 常州大学 | Detection method for combined residual chlorine in drinking water |
| CN109001393A (en) * | 2018-07-02 | 2018-12-14 | 安徽泾县宏图信息科技有限公司 | A kind of Intelligent sewage water quality information integrating device |
| 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 |
-
2009
- 2009-07-31 CN CN2009200615871U patent/CN201495125U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101907572A (en) * | 2010-08-04 | 2010-12-08 | 聚光科技(杭州)股份有限公司 | Method and device for analyzing water toxicity |
| CN102351303A (en) * | 2011-10-13 | 2012-02-15 | 浙江大学 | Secondary chlorine dosing system based on real-time feedback |
| CN102424464A (en) * | 2011-12-21 | 2012-04-25 | 青岛双瑞海洋环境工程有限公司 | Elimination method of total residual oxidants (TRO) |
| CN102874890A (en) * | 2012-09-06 | 2013-01-16 | 张俊峰 | Application of on-line type residual chlorine detector to monitoring residual chlorine removal capacity of hemodialysis water treatment system in real time |
| CN104714049A (en) * | 2013-12-17 | 2015-06-17 | 国际商业机器公司 | Computer based fluid flow velocity estimation from concentrations of a reacting constituent for products and services |
| US11047722B2 (en) | 2013-12-17 | 2021-06-29 | International Business Machines Corporation | Computer based fluid flow velocity estimation from concentrations of a reacting constituent for products and services |
| CN104020068A (en) * | 2014-04-29 | 2014-09-03 | 首钢总公司 | Device and method for detecting dechlorinating performance of dechlorinating agent |
| CN105021785A (en) * | 2015-05-20 | 2015-11-04 | 常州大学 | Detection method for combined residual chlorine in drinking water |
| CN104891613A (en) * | 2015-05-25 | 2015-09-09 | 北京市自来水集团有限责任公司 | Direct-current electronic control chlorinating device |
| CN109001393A (en) * | 2018-07-02 | 2018-12-14 | 安徽泾县宏图信息科技有限公司 | A kind of Intelligent sewage water quality information integrating device |
| 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 |
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Granted publication date: 20100602 |
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