CN112429820A - Residual chlorine control method and device for chlorine dioxide disinfection - Google Patents
Residual chlorine control method and device for chlorine dioxide disinfection Download PDFInfo
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- CN112429820A CN112429820A CN201910791404.XA CN201910791404A CN112429820A CN 112429820 A CN112429820 A CN 112429820A CN 201910791404 A CN201910791404 A CN 201910791404A CN 112429820 A CN112429820 A CN 112429820A
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- chlorine
- residual chlorine
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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
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B11/00—Oxides or oxyacids of halogens; Salts thereof
- C01B11/02—Oxides of chlorine
- C01B11/022—Chlorine dioxide (ClO2)
- C01B11/023—Preparation from chlorites or chlorates
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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
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses a residual chlorine control method and a residual chlorine control device for chlorine dioxide disinfection, which comprise a chlorine dioxide generator, a residual chlorine monitoring and controller, a residual chlorine monitoring sensor and a disinfection tank, wherein the left end and the right end of the chlorine dioxide generator are respectively connected with a metering pump, the two metering pumps are respectively connected with a sodium chlorate dispensing barrel and a hydrochloric acid dispensing barrel, a medicine outlet pipe of the chlorine dioxide generator is fixedly connected with a side inlet of an ejector, an outlet of the ejector is connected into the interior of the disinfection tank, a water outlet pipe of the disinfection tank is provided with a suction pump, one pipeline of the suction pump is connected to a water outlet valve, and the other pipeline of the suction pump is connected to the front end of the ejector, and the invention has the beneficial effects that: the residual chlorine content of the effluent can be automatically monitored and controlled, the using amount of the medicament is saved, and the labor cost and the time cost are reduced.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a residual chlorine control method and a residual chlorine control device for chlorine dioxide disinfection.
Background
Chlorine dioxide is added to disinfect tap water, sewage and other water bodies, and the method is a common water body disinfection method at present. The chlorine dioxide has a unique unsaturated electronic structure and a very strong oxidation effect, and attacks the atomic groups of pollutants containing electrons in a water body to deprive the electrons of the pollutants so as to lose the activity of the pollutants, thereby achieving the aim of killing microorganisms in the water. Meanwhile, the chlorine dioxide also has the function of deodorization, and is converted into other odorless substances through the dehydration reaction with the odorous substance groups. The chlorine dioxide can kill microorganisms and does not react with other substances to generate new toxic and harmful substances, so that the water body treatment difficulty is reduced.
However, the large amount of the chlorine dioxide brings a series of problems, and particularly, the problem of secondary pollution caused by the excessive use of the chlorine dioxide is particularly outstanding. The content of residual chlorine in the treated water body is often easy to exceed the standard, and the residual chlorine in the water body is easy to generate chemical reaction with organic matters in the water to generate a series of carcinogens such as chloroform, trichloromethane and the like, thereby causing great harm to human bodies and organisms. At this time, an additional set of dechlorination device is required to ensure that the content of residual chlorine in the treated water is lower than the relevant standard. The mainstream dechlorination process at present comprises the following steps: chemical method and activated carbon adsorption method. The chemical agent method mainly achieves the aim of dechlorination by adding chemical agents such as sulfur dioxide, sodium bisulfite, sodium sulfite, sodium thiosulfate and the like into the water body. The method needs more dechlorination agents, increases the water body treatment cost, and meanwhile, the added dechlorination agents need to be further removed by other measures, increases the water body treatment difficulty and is not beneficial to long-term operation management. The activated carbon adsorption method mainly utilizes the characteristic that activated carbon has good adsorbability, and adsorbs free chloride ions in water and substances such as trichloromethane generated by reaction and the like through the activated carbon. The method has good adsorption effect, but the using amount of the activated carbon is large, the treatment cost is high, the replaced waste activated carbon after saturated adsorption is difficult to reuse, the treatment cost is high, and the solid waste secondary pollution is easy to form.
Disclosure of Invention
The invention aims to provide a residual chlorine control method and a residual chlorine control device for chlorine dioxide disinfection, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a chlorine dioxide disinfection residual chlorine control method and device comprises a chlorine dioxide generator, a residual chlorine monitoring and controller, a residual chlorine monitoring sensor and a disinfection tank, wherein the left end and the right end of the chlorine dioxide generator are respectively connected with a metering pump, the two metering pumps are respectively connected with a sodium chlorate dispensing barrel and a hydrochloric acid dispensing barrel, a medicine outlet pipe of the chlorine dioxide generator is fixedly connected with a side inlet of an ejector, an outlet of the ejector is connected into the disinfection tank, a suction pump is arranged on a water outlet pipe of the disinfection tank, one pipeline of the suction pump is connected to a water outlet valve, the other pipeline is connected to the front end of the ejector, a manual ball valve and a pressure gauge are arranged on a pipeline connecting the ejector, the manual ball valve and the pressure gauge are connected with the residual chlorine monitoring sensor through a three-way valve, and the other end of the residual chlorine monitoring sensor is connected with the residual chlorine monitoring and controller, and the residual chlorine detection and control device is connected with the two metering pumps through a cable.
Preferably, a three-way valve is arranged on a pipeline at the rear end of the manual ball valve, an outlet at one end of the three-way valve is connected with a pressure gauge, an outlet at the other end of the three-way valve is connected with a residual chlorine detection sensor and a residual chlorine detection and control device, and the other end of the pressure gauge is connected with a water inlet end of the ejector in a backflow mode.
Preferably, still dispose the touch-sensitive screen on the chlorine residue detects and the controller, the chlorine residue detects and the controller passes through cable conductor transmission control and connects two measuring pumps.
The residual chlorine control method for chlorine dioxide disinfection is characterized by that the chlorine dioxide generator is connected with two metering pumps, and the chemicals in the sodium chlorate dispensing barrel and hydrochloric acid dispensing barrel are respectively pumped into the chlorine dioxide generator to make mixed chemical reaction to produce chlorine dioxide, and the chlorine dioxide is mixed with sewage by means of pipeline jet device, and fed into the disinfection water tank, the water after being disinfected in the disinfection water tank is pumped by a suction pump to the water outlet valve to discharge water, the disinfection link of the water body is completed, part of water body pumped by the suction pump flows back to the water inlet end of the ejector through a branch pipeline and a manual ball valve, the branch pipeline is provided with a residual chlorine detection sensor, a residual chlorine detection and control device and a pressure gauge, the residual chlorine detection sensor detects signals and data, reads and displays the signals and the data through a residual chlorine detection and controller, and transmits control signals to the two metering pumps through a control cable.
Preferably, sewage or drinking water that the reaction finishes in the disinfection pond divide into two the tunnel behind through the suction pump effect, connect outlet valve all the way, and normal water goes out, another way then is the detection pipeline of chlorine residue, passes through chlorine residue detection pipeline's rivers get into the chlorine residue content that detects in the chlorine residue detection sensor to give detection signal back to chlorine residue detection and controller, chlorine residue detects and the controller through the touch-sensitive screen display chlorine residue numerical value on it in, detects and the output flow of two measuring pumps of chlorine residue numerical range control that set up on the controller according to chlorine residue.
Compared with the prior art, the invention has the beneficial effects that:
1. the adding amount of the sodium chlorate and hydrochloric acid medicament is adjusted in time by monitoring the residual chlorine content of the effluent in real time, so that excessive adding can be avoided, the using amount of the medicament is effectively saved, and the cost of the operating medicament is reduced;
2. the residual chlorine of the effluent is monitored and adjusted in real time, the dosage of dechlorination medicaments is reduced, the medicament cost is reduced, and the secondary pollution of the residual chlorine is reduced;
3. through setting the residual chlorine control range, the adding amount of the sodium chlorate and the hydrochloric acid medicament is automatically controlled through signal transmission, the generation amount of the chlorine dioxide is automatically adjusted, and the residual chlorine index of the effluent is controlled in real time.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
In the figure: 1 chlorine dioxide generator, 2 metering pumps, 3 sodium chlorate dispensing barrels, 4 hydrochloric acid dispensing barrels, 5 suction pumps, 6 disinfection pools, 7 pressure gauges, 8 manual ball valves, 9 residual chlorine detection and control devices, 10 residual chlorine monitoring sensors, 11 water outlet valves and 12 ejectors.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: a chlorine dioxide disinfection residual chlorine control method and device comprises a chlorine dioxide generator 1, a residual chlorine monitoring and controller 9, a residual chlorine monitoring sensor 10 and a disinfection tank 6, wherein the left end and the right end of the chlorine dioxide generator 1 are respectively connected with a metering pump 2, the two metering pumps 2 are respectively connected with a sodium chlorate dispensing barrel 3 and a hydrochloric acid dispensing barrel 4, a medicine outlet pipe of the chlorine dioxide generator 1 is fixedly connected with a side inlet of an ejector 12, an outlet of the ejector 12 is connected into the disinfection tank 6, a water outlet pipe of the disinfection tank 6 is provided with a suction pump 5, one path of pipeline of the suction pump 5 is connected with a water outlet valve 11, the other path of pipeline is connected with the front end of the ejector 12, a manual ball valve 8 and a pressure gauge 7 are arranged on a pipeline connected with the ejector 12, the manual ball valve 8 and the pressure gauge 7 are connected with the residual chlorine monitoring sensor 10 through a ball valve and a three-way, the other end of the residual chlorine monitoring sensor 10 is connected with a residual chlorine detection and controller 9, and the residual chlorine detection and controller 9 is connected with the two metering pumps 2 through cables.
It is worth noting that a three-way valve is arranged on a pipeline at the rear end of the manual ball valve 8, an outlet at one end of the three-way valve is connected with a pressure gauge 7, an outlet at the other end of the three-way valve is connected with a residual chlorine detection sensor 10 and a residual chlorine detection and control device 9, and the other end of the pressure gauge 7 is connected with a water inlet end of an ejector 12 in a backflow mode.
It is worth noting that a touch screen is also arranged on the residual chlorine detection and control device 9, and the residual chlorine detection and control device 9 is connected with the two metering pumps 2 through a cable for transmission control.
A chlorine dioxide sterilized residual chlorine control method, the chlorine dioxide generator 1 is connected with two metering pumps 2, the chemicals in a sodium chlorate dispensing barrel 3 and a hydrochloric acid dispensing barrel 4 are respectively pumped into the chlorine dioxide generator 1 to carry out mixed chemical reaction to generate chlorine dioxide, the chlorine dioxide is mixed with sewage through a pipeline ejector 12 and enters a sterilizing water pool 6, the sterilized water in the sterilizing water pool 6 is pumped to a water outlet valve 13 through a suction pump 5 to discharge water, the sterilizing link of water is completed, part of the water pumped by the suction pump 5 flows back to the water inlet end of the ejector 12 through a branch pipeline through a manual ball valve 8, the branch pipeline is provided with a residual chlorine detection sensor 10, a residual chlorine detection and control device 9 and a pressure gauge 7, the residual chlorine detection sensor 10 reads and displays and outputs the detected signals and data through the residual chlorine detection and control device 9, and transmits control signals to the two metering pumps 2 through the control cable 11.
It is worth noting that sewage or drinking water that the reaction finishes in disinfection pond 6 divide into two the tunnel after through 5 effects of suction pump, connect outlet valve 13 all the way, normal water, another way then is the detection pipeline of chlorine residue, passes through chlorine residue detection pipeline's rivers, the chlorine residue content that detects in the water among the entering chlorine residue detection sensor 10 to give detection signal feedback to chlorine residue detection and controller 9, chlorine residue detects and controller 9 through its touch-sensitive screen show chlorine residue numerical value the time, detects and controls the output flow of two measuring pumps 2 according to chlorine residue numerical value range that sets up on the controller 9.
The chlorine dioxide generator 1 is connected with two metering pumps 2, and agents in a sodium chlorate dispensing barrel 3 and a hydrochloric acid dispensing barrel 4 are respectively pumped into the chlorine dioxide generator 1 to carry out mixed chemical reaction to generate chlorine dioxide. Chlorine dioxide is mixed with sewage through the pipeline jet 12 and enters the disinfection water tank 6. The water after disinfection in the disinfection water tank 6 is pumped to the water outlet valve 13 by the suction pump 5 to discharge water, and the disinfection link of the water body is completed. And part of the water body pumped by the suction pump 5 flows back to the water inlet end of the ejector 12 through a branch pipeline and a manual ball valve 8. And a residual chlorine detection sensor 10, a residual chlorine detection and control device 9 and a pressure gauge 7 are arranged on the branch pipeline. The residual chlorine detection sensor 10 reads and displays the detected signals and data through the residual chlorine detection and controller 9, and transmits control signals to the two metering pumps 2 through the control cable 11.
The control time sequence is as follows: when the residual chlorine detecting and controlling device 9 detects that the residual chlorine amount in the water exceeds a set range value through the residual chlorine detecting sensor 10, the residual chlorine detecting and controlling device 9 controls to increase or decrease the output flow of the metering pump 2, and further increases or decreases the chlorine dioxide production amount of the chlorine dioxide generator 1, namely, the residual chlorine content in the water can be synchronously increased or decreased.
Example (b):
the chlorine dioxide is adopted for disinfection originally by a certain medical wastewater treatment station, and then sodium bisulfite or sodium sulfite medicament is dechlorinated to reach the standard and then discharged. The treatment process has the disadvantages of large dosage of the traditional Chinese medicine, high operation cost, unstable dechlorination effect and excessive residual chlorine. After the device is adopted to replace the original chlorine dioxide disinfection system, the medical wastewater is disinfected in a disinfection tank, and a chlorine dioxide disinfectant generated by a chlorine dioxide generator circularly enters the wastewater through an ejector to react for disinfection. The residual chlorine detection and control device is provided with a control residual chlorine range of 0.3-0.5mg/L, and when the detection value of the residual chlorine concentration in the circulating pipeline is lower than 0.3 mg/L, the residual chlorine control device transmits a signal to the sodium chlorate and hydrochloric acid metering pump, and the flow of the metering pump is increased, so that the generation amount and the adding amount of chlorine dioxide are increased. When the detection value of the residual chlorine concentration is higher than 0.5mg/L, the residual chlorine controller transmits a signal to the sodium chlorate and hydrochloric acid metering pump, and the flow of the metering pump is reduced, so that the generation amount and the adding amount of chlorine dioxide are reduced. After the operation is monitored for a period of time, the concentration of the residual chlorine in the disinfected effluent is stabilized at 0.3-0.5mg/L, the effluent can be stably discharged after reaching the standard, and the use cost of the medicament can be effectively controlled.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a sterile residual chlorine controlling means of chlorine dioxide, includes chlorine dioxide generator (1), residual chlorine monitoring and controller (9), residual chlorine monitoring sensor (10) and disinfection pond (6), its characterized in that: the chlorine dioxide generator (1) is connected with a metering pump (2) at the left end and the right end respectively, the two metering pumps (2) are connected with a sodium chlorate dispensing barrel (3) and a hydrochloric acid dispensing barrel (4) respectively, the medicine outlet pipe of the chlorine dioxide generator (1) is fixedly connected with the side inlet of an ejector (12), the outlet of the ejector (12) is connected into the inside of a disinfection water tank (6), a suction pump (5) is arranged on the water outlet pipe of the disinfection water tank (6), one pipeline of the suction pump (5) is connected to a water outlet valve (11), the other pipeline is connected to the front end of the ejector (12), a manual ball valve (8) and a pressure gauge (7) are arranged on the pipeline connected with the ejector (12), the manual ball valve (8) and the pressure gauge (7) are connected with a residual chlorine monitoring sensor (10) through a three-way valve, the other end of the residual chlorine monitoring sensor (10) is connected with a residual chlorine detection and controller (9, and the residual chlorine detection and control device (9) is connected with the two metering pumps (2) through a cable.
2. A chlorine dioxide disinfection residual chlorine control device as claimed in claim 1, wherein: the device is characterized in that a three-way valve is arranged on a pipeline at the rear end of the manual ball valve (8), one end of the three-way valve is connected with a pressure gauge (7), the other end of the three-way valve is connected with a residual chlorine detection sensor (10) and a residual chlorine detection and controller (9), and the other end of the pressure gauge (7) is connected with a water inlet end of an ejector (12) in a backflow mode.
3. A chlorine dioxide disinfection residual chlorine control device as claimed in claim 1, wherein: still dispose the touch-sensitive screen on chlorine residue detects and controller (9), chlorine residue detects and controller (9) and passes through cable conductor transmission control connection two measuring pumps (2).
4. A residual chlorine control method for chlorine dioxide disinfection is characterized in that: the chlorine dioxide disinfection device is characterized in that the chlorine dioxide generator (1) is connected with two metering pumps (2), agents in a sodium chlorate dispensing barrel (3) and a hydrochloric acid dispensing barrel (4) are respectively pumped into the chlorine dioxide generator (1) to carry out mixed chemical reaction to generate chlorine dioxide, the chlorine dioxide is mixed with sewage through a pipeline ejector (12) and enters a disinfection water tank (6), the disinfected water in the disinfection water tank (6) is pumped to a water outlet valve (13) through a suction pump (5) to finish a water disinfection link, part of water pumped by the suction pump (5) flows back to a water inlet end of the ejector (12) through a manual ball valve (8) through a branch pipeline, a residual chlorine detection sensor (10), a residual chlorine detection and control device (9) and a pressure gauge (7) are arranged on the branch pipeline, the residual chlorine detection sensor (10) reads and displays and outputs detected signals and data through the residual chlorine detection and control device (9), and transmits control signals to the two metering pumps (2) through the control cable (11).
5. The residual chlorine control method for chlorine dioxide disinfection according to claim 4, comprising the steps of: the sewage or the drinking water that the reaction finishes in disinfection pond (6) divide into two the tunnel through suction pump (5) effect back, connect outlet valve (13) all the way, normal play water, another way then is the detection pipeline of chlorine residue, process chlorine residue detection pipeline's rivers, the chlorine residue content that detects in the detection water in getting into chlorine residue detection sensor (10) to give detection signal back to chlorine residue detection and controller (9), chlorine residue detects and controller (9) through its touch-sensitive screen show chlorine residue numerical value the time, detects and the output flow of two measuring pumps of chlorine residue numerical value range control (2) that set up on controller (9) according to chlorine residue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910791404.XA CN112429820A (en) | 2019-08-26 | 2019-08-26 | Residual chlorine control method and device for chlorine dioxide disinfection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910791404.XA CN112429820A (en) | 2019-08-26 | 2019-08-26 | Residual chlorine control method and device for chlorine dioxide disinfection |
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| CN112429820A true CN112429820A (en) | 2021-03-02 |
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| CN201910791404.XA Pending CN112429820A (en) | 2019-08-26 | 2019-08-26 | Residual chlorine control method and device for chlorine dioxide disinfection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114646743A (en) * | 2022-03-17 | 2022-06-21 | 重庆昕晟环保科技有限公司 | Test device for removing residual chlorine from secondary water supply terminal filter element |
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| CN204057958U (en) * | 2014-09-17 | 2014-12-31 | 诸城市宏利圣得环境科技有限公司 | High efficiency composition chlorine dioxide generating device |
| CN204607661U (en) * | 2015-05-12 | 2015-09-02 | 重庆市渝西水务有限公司 | A kind of dioxide peroxide dosing system |
| CN205313085U (en) * | 2016-01-18 | 2016-06-15 | 云南嘉科环保设备有限公司 | Chlorine dioxide generator |
| CN205472643U (en) * | 2016-01-28 | 2016-08-17 | 云南邦乾环保科技有限公司 | Chlorine dioxide generator |
| CN205773318U (en) * | 2016-05-27 | 2016-12-07 | 溧阳市中兴环保机械有限公司 | Chlorine dioxide generator |
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2019
- 2019-08-26 CN CN201910791404.XA patent/CN112429820A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204057958U (en) * | 2014-09-17 | 2014-12-31 | 诸城市宏利圣得环境科技有限公司 | High efficiency composition chlorine dioxide generating device |
| CN204607661U (en) * | 2015-05-12 | 2015-09-02 | 重庆市渝西水务有限公司 | A kind of dioxide peroxide dosing system |
| CN205313085U (en) * | 2016-01-18 | 2016-06-15 | 云南嘉科环保设备有限公司 | Chlorine dioxide generator |
| CN205472643U (en) * | 2016-01-28 | 2016-08-17 | 云南邦乾环保科技有限公司 | Chlorine dioxide generator |
| CN205773318U (en) * | 2016-05-27 | 2016-12-07 | 溧阳市中兴环保机械有限公司 | Chlorine dioxide generator |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114646743A (en) * | 2022-03-17 | 2022-06-21 | 重庆昕晟环保科技有限公司 | Test device for removing residual chlorine from secondary water supply terminal filter element |
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