CN111982986A - Method for judging water quality disinfection condition according to ORP value in water - Google Patents
Method for judging water quality disinfection condition according to ORP value in water Download PDFInfo
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- CN111982986A CN111982986A CN202010721802.7A CN202010721802A CN111982986A CN 111982986 A CN111982986 A CN 111982986A CN 202010721802 A CN202010721802 A CN 202010721802A CN 111982986 A CN111982986 A CN 111982986A
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- water
- orp
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- sampling
- value
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 65
- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 11
- 238000012360 testing method Methods 0.000 claims description 35
- 238000005070 sampling Methods 0.000 claims description 34
- 238000007689 inspection Methods 0.000 claims description 18
- 230000001681 protective effect Effects 0.000 claims description 9
- 241000588724 Escherichia coli Species 0.000 claims description 8
- 230000033116 oxidation-reduction process Effects 0.000 claims 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract description 6
- 239000000460 chlorine Substances 0.000 abstract description 6
- 229910052801 chlorine Inorganic materials 0.000 abstract description 6
- 238000005259 measurement Methods 0.000 abstract description 6
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract 1
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 4
- 239000004155 Chlorine dioxide Substances 0.000 description 2
- 235000019398 chlorine dioxide Nutrition 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
- G01N2001/1418—Depression, aspiration
- G01N2001/1427—Positive displacement, piston, peristaltic
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Hydrology & Water Resources (AREA)
- Molecular Biology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to a method for judging water quality disinfection condition according to ORP value in water, comprising the following steps: s1: installation of a spot check device, S2: spot check, S3: ORP online meter detection, S4: and (6) judging and comparing. The method judges the water quality disinfection condition by measuring the ORP instead of the residual chlorine value, wherein the ORP measurement can not be influenced by the color in water and can be continuously measured, thereby reducing the consumption of reagents and saving the cost.
Description
Technical Field
The invention relates to the technical field of water quality detection, in particular to a method for judging water quality disinfection condition according to an ORP value in water.
Background
At present, in the water quality detection process, the escherichia coli indexes are originally judged according to the residual chlorine value, most of instruments for measuring residual chlorine accurately adopt a DPD reagent method, the method has high requirements on the color of effluent, and when the color of the effluent is deep, the measurement precision can be influenced; therefore, it is important to design a method for determining water quality disinfection according to the ORP value in water in order to increase the measurement accuracy.
Disclosure of Invention
The invention provides a method for judging water quality disinfection condition according to an ORP value in water, which judges the water quality disinfection condition by measuring the ORP value instead of a residual chlorine value, wherein the ORP measurement is not influenced by the color in the water and can be continuously measured, thereby reducing the consumption of reagents and saving the cost.
In order to solve the technical problems, the invention provides a method for judging water quality disinfection condition according to ORP value in water, which is characterized by comprising the following steps: the method comprises the following steps:
s1: installing a sampling inspection device: a sampling inspection device is arranged at the main water outlet, the height of the sampling inspection device is adjusted, and water flow can normally enter the sampling inspection device when water flows out;
s2: sampling inspection: starting a sampling device, sampling and detecting the water flow of the two reagent pipes at one time, sampling and detecting once every 1 minute, and sampling and detecting 5 times totally;
s3: detecting by an ORP online meter: sequentially feeding water flows of ten reagent pipes into an ORP online instrument by an operator, and measuring the oxidability of the water in real time by the ORP online instrument;
s4: and (3) judging and comparing: the ORP value measured by the ORP on-line instrument is compared with a 650mv standard value, when the measured ORP value is more than 650mv, the escherichia coli index can be judged to stably reach the standard for a long time, the water quality disinfection condition is good, otherwise, the disinfection is required to be continued.
Further: the selective examination device include outer pinch-off blades, fixing base, interior pinch-off blades, clamping nut, screw rod, connecting cylinder, mounting, backup pad and selective examination test tube, outer pinch-off blades and interior pinch-off blades all be the arc form, fixing base and outer pinch-off blades fuse, the backup pad be located the fixing base under and fuse with interior pinch-off blades, the vertical bottom of fixing at the fixing base of screw rod, the screw rod pass the backup pad, clamping nut connect on the screw rod of backup pad below and contact with the bottom of backup pad, the mounting pass through the connecting cylinder and connect on the screw rod, the mounting on be provided with two selective examination test tubes.
And further: the selective examination test tube comprises a test tube main body, a servo motor, a protective cover body, a piston type valve core and a screw shaft, wherein the test tube main body is a tube body with an open upper end and a sealed lower end, an external thread is arranged on the outer wall of the test tube main body, a first threaded hole matched with the external thread is formed in the top of the protective cover body, a fixing piece is connected with a connecting cylinder into a whole through a connecting piece, two second threaded holes matched with the external thread are formed in the fixing piece, the servo motor is arranged at the bottom of the test tube main body and is sealed through the protective cover body, the screw shaft is rotatably connected in the test tube main body, the lower end of the screw shaft is connected with the servo motor, a selective examination through hole is formed in the side wall of the test tube main body, the piston type valve core is connected to the screw shaft of the test tube, and a third threaded hole matched with the screw shaft is formed in the center of the piston type valve core.
And further: the outer wall of the piston type valve core is provided with two vertical bulges, and the inner wall of the test tube main body is provided with a guide sliding groove matched with the two vertical bulges.
And further: the test tube main part be provided with the connecting seat on the outer wall that faces the spot check through-hole, the connecting seat be the ring shape, the outer wall of connecting seat on be provided with the external screw thread of second that is used for connecting pipeline.
And further: the screw rods on the upper side and the lower side of the connecting cylinder are respectively connected with an adjusting nut, the upper adjusting nut and the lower adjusting nut are respectively contacted with the upper surface and the lower surface of the connecting cylinder, and the connecting cylinder is clamped and fixed on the screw rods through the adjusting nuts on the upper side and the lower side.
After the structure is adopted, the water quality disinfection condition is judged by measuring the ORP value instead of the residual chlorine value, wherein the ORP measurement is not influenced by the color in water and can be continuously measured, so that the consumption of reagents is reduced, and the cost is saved; moreover, the sampling inspection device in the design can adjust the height, so that water flow can automatically flow into the sampling inspection device, and the sampling inspection device can be arranged on different water outlet pipes, thereby increasing the practicability.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a graph showing the ORP of effluent and the experimental amount of Escherichia coli.
Fig. 2 is a structural view of the elastic positioning mechanism.
Fig. 3 is an internal structure view of the second tool holder.
Fig. 4 is a structural view of the translation mechanism.
Detailed Description
The invention provides a method for judging water quality disinfection condition according to ORP value in water, which is characterized by comprising the following steps: the method comprises the following steps:
s1: installing a sampling inspection device: a sampling inspection device is arranged at the main water outlet, the height of the sampling inspection device is adjusted, and water flow can normally enter the sampling inspection device when water flows out;
s2: sampling inspection: starting a sampling device, sampling and detecting the water flow of the two reagent pipes at one time, sampling and detecting once every 1 minute, and sampling and detecting 5 times totally;
s3: detecting by an ORP online meter: sequentially feeding water flows of ten reagent pipes into an ORP online instrument by an operator, and measuring the oxidability of the water in real time by the ORP online instrument;
s4: and (3) judging and comparing: the ORP value measured by the ORP on-line instrument is compared with a 650mv standard value, when the measured ORP value is more than 650mv, the escherichia coli index can be judged to stably reach the standard for a long time, the water quality disinfection condition is good, otherwise, the disinfection is required to be continued.
The method judges the water quality disinfection condition by measuring the ORP instead of the residual chlorine value, wherein the ORP measurement is not influenced by the color in water and can be continuously measured, so that the consumption of reagents is reduced, and the cost is saved; and the added chlorine dioxide for disinfection is a strong oxidant, and the ORP value reflects the oxidability in water, so that the water quality disinfection condition is judged by measuring the oxidability in water in real time through an ORP on-line instrument, as shown in figure 1, after the relation between ORP and escherichia coli indexes for a period of time is summarized, the result shows that the ORP value in water and the escherichia coli indexes are in a linear relation after the chlorine dioxide is added, and when the ORP is more than 650mv, the escherichia coli indexes can stably reach the standard for a long time.
The selective examination device shown in fig. 2 comprises an outer clamping plate 1, a fixing seat 3, an inner clamping plate 2, a clamping nut 6, a screw rod 5, a connecting cylinder 7, a fixing part 8, a supporting plate 4 and a selective examination test tube 10, wherein the outer clamping plate and the inner clamping plate are arc-shaped, the fixing seat and the outer clamping plate are connected into a whole, the supporting plate is positioned under the fixing seat and connected with the inner clamping plate into a whole, the screw rod is vertically fixed at the bottom of the fixing seat, the screw rod penetrates through the supporting plate, the clamping nut is connected onto the screw rod below the supporting plate and is contacted with the bottom of the supporting plate, the fixing part is connected onto the screw rod through the connecting cylinder, and the fixing part is provided with two selective examination test tubes.
The selective examination test tube shown in fig. 2 and 3 comprises a test tube main body 10-1, a servo motor 10-3, a protective cover body 10-2, a piston type valve core 10-5 and a screw shaft 10-4, wherein the test tube main body is a tube body with an open upper end and a sealed lower end, external threads are arranged on the outer wall of the test tube main body, a first threaded hole matched with the external threads is formed in the top of the protective cover body, the fixing piece is connected with the connecting cylinder into a whole through a connecting piece 12, two second threaded holes matched with the external threads are formed in the fixing piece, the servo motor is installed at the bottom of the test tube main body and sealed through the protective cover body, the screw shaft is rotatably connected in the test tube main body, the lower end of the screw shaft is connected with the servo motor, and a selective examination through hole 10-6 is formed in the side wall of the, the piston type valve core is connected to a screw shaft of the test tube main body and seals the sampling through hole, and a third threaded hole matched with the screw shaft is formed in the center of the piston type valve core.
As shown in figure 4, two vertical bulges 10-6 are arranged on the outer wall of the piston type valve core, and a guide sliding groove matched with the two vertical bulges is arranged on the inner wall of the test tube main body.
The outer wall of the test tube main body, which faces the sampling through hole and is shown in fig. 3, is provided with a connecting seat 10-7, the connecting seat is annular, and the outer wall of the connecting seat is provided with a second external thread for connecting a conveying pipeline 11.
The screw rods on the upper side and the lower side of the connecting cylinder shown in fig. 2 are respectively connected with an adjusting nut 9, the upper adjusting nut and the lower adjusting nut are respectively contacted with the upper surface and the lower surface of the connecting cylinder, and the connecting cylinder is clamped and fixed on the screw rods through the adjusting nuts on the upper side and the lower side.
Claims (6)
1. A method for judging water quality disinfection condition according to ORP value in water is characterized in that: the method comprises the following steps:
s1: installing a sampling inspection device: a sampling inspection device is arranged at the main water outlet, the height of the sampling inspection device is adjusted, and water flow can normally enter the sampling inspection device when water flows out;
s2: sampling inspection: starting a sampling device, sampling and detecting the water flow of the two reagent pipes at one time, sampling and detecting once every 1 minute, and sampling and detecting 5 times totally;
s3: detecting by an ORP online meter: sequentially feeding water flows of ten reagent pipes into an ORP online instrument by an operator, and measuring the oxidability of the water in real time by the ORP online instrument;
s4: and (3) judging and comparing: the ORP value measured by the ORP on-line instrument is compared with a 650mv standard value, when the measured ORP value is more than 650mv, the escherichia coli index can be judged to stably reach the standard for a long time, the water quality disinfection condition is good, otherwise, the disinfection is required to be continued.
2. The method for determining water disinfection according to ORP value in water of claim 1, wherein: the selective examination device include outer clamp plate (1), fixing base (3), interior clamp plate (2), clamping nut (6), screw rod (5), connecting cylinder (7), mounting (8), backup pad (4) and selective examination test tube (10), outer clamp plate and interior clamp plate all be the arc form, fixing base and outer clamp plate fuse, the backup pad be located under the fixing base and fuse with interior clamp plate, the vertical bottom of fixing at the fixing base of screw rod, the screw rod pass the backup pad, clamping nut connect on the screw rod of backup pad below and contact with the bottom of backup pad, the mounting connect on the screw rod through connecting cylinder, the mounting on be provided with two selective examination test tubes.
3. The method for determining water disinfection according to ORP value in water of claim 2, wherein: the selective examination test tube comprises a test tube main body (10-1), a servo motor (10-3), a protective cover body (10-2), a piston type valve core (10-5) and a screw shaft (10-4), wherein the test tube main body is a tube body with an open upper end and a sealed lower end, external threads are arranged on the outer wall of the test tube main body, a first threaded hole matched with the external threads is formed in the top of the protective cover body, the fixing piece is connected with the connecting cylinder into a whole through a connecting piece (12), two second threaded holes matched with the external threads are formed in the fixing piece, the servo motor is installed at the bottom of the test tube main body and sealed through the protective cover body, the screw shaft is rotatably connected in the test tube main body, the lower end of the screw shaft is connected with the servo motor, and a selective examination through hole (10-6) is formed in the side wall of the test, the piston type valve core is connected to a screw shaft of the test tube main body and seals the sampling through hole, and a third threaded hole matched with the screw shaft is formed in the center of the piston type valve core.
4. The method for determining water disinfection according to ORP (oxidation-reduction potential) value in water of claim 3, wherein the ORP value is the following: the outer wall of the piston type valve core is provided with two vertical bulges (10-6), and the inner wall of the test tube main body is provided with a guide sliding groove matched with the two vertical bulges.
5. The method for determining water disinfection according to ORP (oxidation-reduction potential) value in water of claim 3, wherein the ORP value is the following: the test tube body is provided with a connecting seat (10-7) on the outer wall facing the sampling through hole, the connecting seat is annular, and the outer wall of the connecting seat is provided with a second external thread for connecting a conveying pipeline (11).
6. The method for determining water disinfection according to ORP value in water of claim 2, wherein: the screw rods on the upper side and the lower side of the connecting cylinder are respectively connected with an adjusting nut (9), the upper adjusting nut and the lower adjusting nut are respectively contacted with the upper surface and the lower surface of the connecting cylinder, and the connecting cylinder is clamped and fixed on the screw rods through the adjusting nuts on the upper side and the lower side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010721802.7A CN111982986A (en) | 2020-07-24 | 2020-07-24 | Method for judging water quality disinfection condition according to ORP value in water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010721802.7A CN111982986A (en) | 2020-07-24 | 2020-07-24 | Method for judging water quality disinfection condition according to ORP value in water |
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| CN111982986A true CN111982986A (en) | 2020-11-24 |
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| CN202010721802.7A Pending CN111982986A (en) | 2020-07-24 | 2020-07-24 | Method for judging water quality disinfection condition according to ORP value in water |
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Citations (8)
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|---|---|---|---|---|
| US20050186119A1 (en) * | 2004-02-19 | 2005-08-25 | Ids Company, Ltd. | Sampling and dispensing apparatus |
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| CN207278937U (en) * | 2017-09-18 | 2018-04-27 | 广东希恩卫浴实业有限公司 | A kind of Self-returning Directional Control Valve |
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-
2020
- 2020-07-24 CN CN202010721802.7A patent/CN111982986A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20050186119A1 (en) * | 2004-02-19 | 2005-08-25 | Ids Company, Ltd. | Sampling and dispensing apparatus |
| CN102680057A (en) * | 2012-05-17 | 2012-09-19 | 上海市计量测试技术研究院 | Piston type gas-liquid dual-purpose micro-flow standard device |
| CN105004687A (en) * | 2015-07-16 | 2015-10-28 | 江苏大学 | Constant-volume liquid feeding metering method and device for COD detection |
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| CN107340372A (en) * | 2017-08-01 | 2017-11-10 | 贵州大学 | A kind of city river water monitoring device detection channels |
| CN207278937U (en) * | 2017-09-18 | 2018-04-27 | 广东希恩卫浴实业有限公司 | A kind of Self-returning Directional Control Valve |
| US20190194046A1 (en) * | 2017-12-22 | 2019-06-27 | Hayward Industries, Inc. | Systems and methods for dynamic sanitization control |
| CN208845841U (en) * | 2018-10-16 | 2019-05-10 | 山东百帝气动科技股份有限公司 | It is a kind of can be to the solenoid valve that fluid flow is adjusted |
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| Title |
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| 王才东 等: "变自由度螺栓夹紧机构设计及试验研究", 《中国机械工程》 * |
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