CN112067553A - COD water quality on-line detector - Google Patents
COD water quality on-line detector Download PDFInfo
- Publication number
- CN112067553A CN112067553A CN202010993947.2A CN202010993947A CN112067553A CN 112067553 A CN112067553 A CN 112067553A CN 202010993947 A CN202010993947 A CN 202010993947A CN 112067553 A CN112067553 A CN 112067553A
- Authority
- CN
- China
- Prior art keywords
- unit
- water quality
- analysis
- cod water
- quality detector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/3103—Atomic absorption analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
Abstract
The invention relates to the technical field of water quality detection, and discloses a COD water quality online detector and a detection method.
Description
Technical Field
The invention relates to the technical field of water quality online detection, in particular to a COD water quality online detector and a detection method.
Background
Cod (chemical Oxygen demand), also known as chemical Oxygen demand, is one of indicators of water turbidity, and shows the amount of an oxidizing agent consumed when an oxidizable substance such as an organic compound contained in a water sample is oxidized by the oxidizing agent as an Oxygen equivalent. Oxygen equivalent of a substance (generally an organic substance) that can be oxidized by a strong oxidizing agent in wastewater, wastewater treatment plant outlets, and contaminated water. In the research of river pollution and industrial wastewater properties and the operation management of wastewater treatment plants, the method is an important organic pollution parameter which can be measured quickly, and is often expressed by a symbol COD (chemical oxygen demand), and the COD index has the advantages of short measurement time and relatively accurate result compared with BOD (biological oxygen demand).
Disclosure of Invention
Technical problem to be solved
The embodiment of the invention provides a COD water quality on-line detector which is used for completing the on-line detection work of the COD content of a water sample and has the advantages of accurate detection result and high detection efficiency.
Disclosure of the invention
The embodiment of the invention provides a COD (chemical oxygen demand) water quality online detector which comprises a sample acquisition unit, a peristaltic precision metering unit, an analysis reagent storage unit, a ceramic heating reaction unit and a light detection analysis unit, wherein the sample acquisition unit, the peristaltic precision metering unit, the analysis reagent storage unit, the ceramic heating reaction unit and the light detection analysis unit are arranged in a box body; the analytical reagent storage unit is connected with the peristaltic precision metering unit through a valve body; the peristaltic precise metering unit is sequentially connected with the digestion cup and the light detection and analysis unit; the top of box still is equipped with data processing unit and display output unit, and data processing unit is connected with the light inspection analysis unit electricity, and data processing unit accepts the testing result of light inspection analysis unit, shows for the person who detects through display output unit after the analysis processes.
Further, the peristaltic precision metering unit comprises a peristaltic pump and a metering valve, the peristaltic pump is respectively connected with the sample collecting unit and the analysis reagent storage unit, the valve body is arranged between the peristaltic pump and the analysis reagent storage unit, the valve body comprises a plurality of valves, and the valves correspond to the blank sample storage bottle, the oxidant storage bottle and the catalyst storage bottle one to one.
Furthermore, a waste barrel is arranged in the box body, and the light detection and analysis unit is connected with the waste barrel through a drain valve.
Furthermore, the peristaltic precision metering unit comprises a metering cup and a metering valve which are sequentially connected, wherein the peristaltic pump is connected with the metering valve, the metering valve is connected with the digestion cup, the digestion cup is connected with the optical detection analysis unit, the peristaltic precision metering unit also comprises a ceramic heater for heating the digestion cup, and the ceramic heater is sleeved outside the digestion cup.
Furthermore, the optical detection analysis unit comprises an optical detection lens barrel and a luminosity sensing plate, and the luminosity sensing plate is arranged above the optical detection lens barrel.
Furthermore, the inner surface of the box body is also provided with a cooling fan, and the cooling fan is over against the cleared cup and the ceramic heating reaction unit.
Further, the display output unit comprises a liquid crystal display screen and a plurality of COM interfaces for connecting an external printer.
Furthermore, a temperature controller is also arranged in the box body.
Further, the system also comprises a 5G communication module and a cloud data storage server.
(III) advantageous effects
The embodiment of the invention provides a COD water quality online detector, which comprises a sample collecting unit, a peristaltic precision metering unit, an analytical reagent storage unit, a ceramic heating reaction unit, a light detection analysis unit and the like, wherein a water sample to be detected is collected through the sample collecting unit, the peristaltic precision metering unit accurately extracts the water sample to be detected, meanwhile, a certain proportion of an oxidant and a catalyst are extracted from the analytical reagent storage unit, and the water sample to be detected, the oxidant, the catalyst and a blank sample are subjected to digestion reaction in a digestion cup; clear up the cup overcoat and be equipped with ceramic heating reaction unit, adopt unique heating technology can effectually solve the problem that some compounds (like pyridine and aromatic hydrocarbon) in the engineering waste water are difficult to the oxidation, can automize and accomplish the survey of COD content, have the advantage that the testing result is accurate and detection efficiency is high.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a first view angle of an online COD water quality detector in an embodiment of the invention;
FIG. 2 is a schematic structural diagram of a COD water quality on-line detector at a second viewing angle in an embodiment of the present invention;
description of reference numerals:
1: a box body; 21: a water pump; 22: a remote liquid level measurement device;
31: a peristaltic pump; 32: a metering valve; 41: a blank sample storage bottle;
42: an oxidant storage bottle; 43: a catalyst storage bottle; 44: a waste liquid barrel;
51: a ceramic heater; 52: a heat radiation fan; 53: a temperature controller;
6: a digestion cup; 71: a light inspection lens barrel; 72: a photometric sensing plate;
81: a drain valve; 82: a blank sample valve; 83: an oxidant valve;
84: a catalyst valve; 91: a COM interface; 92: and a liquid crystal display screen.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. 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.
In the description of the embodiments of the present invention, it should be noted that the terms "first", "second" and "third" are used for the sake of clarity in describing the numbering of the components of the product and do not represent any substantial difference, unless explicitly stated or limited otherwise. The directions of "up", "down", "left" and "right" are all based on the directions shown in the attached drawings. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.
It is to be understood that, unless otherwise expressly specified or limited, the term "coupled" is used broadly, and may, for example, refer to directly coupled devices or indirectly coupled devices through intervening media. Specific meanings of the above terms in the embodiments of the invention will be understood to those of ordinary skill in the art in specific cases.
The COD water quality on-line detector in the embodiment of the invention is shown in figures 1 and 2 and comprises a box body and a reagent storage chamber arranged below the box body, wherein a plurality of main functional modules are arranged in the box body: the device comprises a sample acquisition unit, a peristaltic precision metering unit, an analytical reagent storage unit, a ceramic heating reaction unit and a light detection and analysis unit. The sample collection unit comprises a water pump 21, a remote liquid level measuring device 22 and the like, the sample collection unit is used for remote sampling, the peristaltic precision metering unit comprises a peristaltic pump 31 and a metering valve 32, the peristaltic pump 31 is used for extracting a water sample collected by the sample collection unit, a blank sample is extracted from an analysis reagent storage unit, an oxidant and a catalyst, the blank sample is conveyed to a digestion cup 6 connected with the metering valve 32 in an accurate proportion, after digestion reaction occurs in the digestion cup 6, the digestion cup is analyzed by a light detection analysis unit connected with the digestion cup 6, the detection analysis unit comprises a light detection lens barrel 71 and a light intensity sensing plate 72, the light intensity sensing plate 72 is arranged above the light detection lens barrel 71, the light detection lens barrel 71 is connected with a liquid discharge valve 81 arranged below the light detection lens barrel, the liquid discharge valve 81 is connected with a waste liquid barrel 44 arranged in the reagent storage chamber, and waste liquid after light detection analysis.
The analysis reagent storage unit comprises a blank sample storage bottle 41, an oxidant storage bottle 42 and a catalyst storage bottle 43 which are arranged in a reagent storage chamber, the three reagent bottles and a waste liquid barrel 44 are arranged in the base in parallel and are respectively connected with the peristaltic pump 31 through conveying pipes, a valve body is further arranged between the peristaltic pump 31 and the reagent bottles, and the valve body comprises a blank sample valve 82, an oxidant valve 83, a catalyst valve 84 and a water sample valve which are respectively in one-to-one correspondence with the plurality of reagent bottles.
Since partial compounds (such as pyridine and aromatic hydrocarbon) in the engineering wastewater are difficult to oxidize and can affect the detection result, the ceramic heater 51 is sleeved on the periphery of the digestion cup 6 to accelerate the reaction of the substances, so that the result is more accurate, and the problem of heat dissipation in the box body 1 is caused, therefore, the heat dissipation fan 52 and the temperature controller 53 are further arranged on the inner surface of the box body 1, and the heat dissipation fan 52 is over against the digested cup 6 and the ceramic heating reaction unit. The temperature controller 53 is provided at an upper portion of the case 1. The display output unit comprises a liquid crystal display screen 92 and a plurality of COM interfaces 91 for connecting an external printer, and the detection result is displayed on the display screen or directly printed.
The system also comprises a 5G communication module and a cloud data storage server, and can send the detection result to platforms such as a national environment network for storage, deeply analyze the detection result by means of a cloud big data method, and fully utilize the detected original data.
The detection principle is as follows: the method adopts a potassium dichromate digestion method and a photometric colorimetric measurement method, in a strong acid solution, quantitative potassium dichromate oxidizes reducing substances in a water sample, hexavalent chromium is reduced into trivalent chromium by the reducing substances in the water at a certain digestion temperature, the absorbance of the trivalent chromium is measured by a photometric method at a certain wavelength, and quantitative analysis and measurement are carried out through the linear relation between the absorbance and the COD value of the water sample.
According to the embodiment, the COD water quality on-line detector provided by the invention can automatically complete the determination of COD content, and has the advantages of accurate detection result and high detection efficiency.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. The COD water quality on-line detector comprises a sample collecting unit, a peristaltic precision metering unit, an analysis reagent storage unit, a ceramic heating reaction unit and a light detection analysis unit which are arranged in a box body, and is characterized in that the analysis reagent storage unit comprises a blank sample storage bottle, an oxidant storage bottle and a catalyst storage bottle which are arranged in a reagent storage chamber, and the reagent storage chamber is positioned below the box body; the analytical reagent storage unit is connected with the peristaltic precision metering unit through a valve body; the peristaltic precision metering unit is sequentially connected with the digestion cup and the light detection and analysis unit; the top of box still is equipped with data processing unit and display output unit, data processing unit with the light examines the analysis unit electricity and is connected, data processing unit accepts the testing result of light examination analysis unit, shows for the person who detects through display output unit after the analysis process.
2. The on-line COD water quality detector according to claim 1, wherein the peristaltic precision metering unit comprises a peristaltic pump and a metering valve, the peristaltic pump is respectively connected with the sample collection unit and the analysis reagent storage unit, the valve body is arranged between the peristaltic pump and the analysis reagent storage unit, the valve body comprises a plurality of valves, and the valves are in one-to-one correspondence with the blank sample storage bottle, the oxidant storage bottle and the catalyst storage bottle.
3. The on-line COD water quality detector according to claim 1, wherein a waste barrel is further arranged in the box body, and the light detection and analysis unit is connected with the waste barrel through a drain valve.
4. The online COD water quality detector according to claim 1, wherein the peristaltic precise metering unit comprises a metering cup and a metering valve which are connected in sequence, the peristaltic pump is connected with the metering valve, the metering valve is connected with the digestion cup, the digestion cup is connected with the light detection and analysis unit, the online COD water quality detector further comprises a ceramic heater for heating the digestion cup, and the ceramic heater is sleeved outside the digestion cup.
5. The on-line COD water quality detector according to claim 2, wherein said optical detection and analysis unit comprises an optical detection lens barrel and an optical detection plate, said optical detection plate is arranged above said optical detection lens barrel.
6. The on-line COD water quality detector according to claim 2, wherein a heat radiation fan is further arranged on the inner surface of the box body, and the heat radiation fan is over against the digestion cup and the ceramic heating reaction unit.
7. The on-line COD water quality detector according to claim 1, wherein the display output unit comprises a liquid crystal display and a plurality of COM interfaces for connecting with an external printer.
8. The on-line COD water quality detector according to claim 1, wherein a temperature controller is further arranged in the box body.
9. The online COD water quality detector according to claim 1, further comprising a 5G communication module and a cloud data storage server.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010993947.2A CN112067553A (en) | 2020-09-21 | 2020-09-21 | COD water quality on-line detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010993947.2A CN112067553A (en) | 2020-09-21 | 2020-09-21 | COD water quality on-line detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112067553A true CN112067553A (en) | 2020-12-11 |
Family
ID=73682157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010993947.2A Pending CN112067553A (en) | 2020-09-21 | 2020-09-21 | COD water quality on-line detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112067553A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1402008A (en) * | 2002-09-16 | 2003-03-12 | 胜利油田龙发工贸有限责任公司 | Vehicle-mounted automatic COC analyzer |
| CN1629639A (en) * | 2003-12-20 | 2005-06-22 | 胜利油田龙发工贸有限责任公司 | Multifunctional water quality COD on-line automatic analyzer |
| CN201425581Y (en) * | 2009-06-05 | 2010-03-17 | 马三剑 | COD monitoring device capable of determining digestion time according to scene conditions |
| CN207557094U (en) * | 2017-11-27 | 2018-06-29 | 广东上风环保科技有限公司 | A kind of permanganate index on-line computing model |
| CN214096724U (en) * | 2020-09-21 | 2021-08-31 | 武汉博远天成环保股份有限公司 | COD water quality on-line detector |
-
2020
- 2020-09-21 CN CN202010993947.2A patent/CN112067553A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1402008A (en) * | 2002-09-16 | 2003-03-12 | 胜利油田龙发工贸有限责任公司 | Vehicle-mounted automatic COC analyzer |
| CN1629639A (en) * | 2003-12-20 | 2005-06-22 | 胜利油田龙发工贸有限责任公司 | Multifunctional water quality COD on-line automatic analyzer |
| CN201425581Y (en) * | 2009-06-05 | 2010-03-17 | 马三剑 | COD monitoring device capable of determining digestion time according to scene conditions |
| CN207557094U (en) * | 2017-11-27 | 2018-06-29 | 广东上风环保科技有限公司 | A kind of permanganate index on-line computing model |
| CN214096724U (en) * | 2020-09-21 | 2021-08-31 | 武汉博远天成环保股份有限公司 | COD water quality on-line detector |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101692049B (en) | Control system used for COD on-line automatic monitor | |
| CN210604376U (en) | Multi-parameter water quality monitoring device | |
| CN104459065A (en) | On-line monitoring system for chemical oxygen demand | |
| CN104345034A (en) | Method for determining chemical oxygen demand of liquid sample and analyzer | |
| CN106680520B (en) | A kind of water quality automatic detection analysis instrument | |
| US20200071210A1 (en) | Systems and methods for continuous measurement of an analyte | |
| CN111562242A (en) | Method for quickly identifying source of overflowing sewage in rainy days of urban drainage system | |
| CN214096724U (en) | COD water quality on-line detector | |
| CN108254521A (en) | A kind of combined type COD water quality in-line analyzer and its detecting system and method | |
| CN102298067A (en) | Full-automatic on-line monitoring system of COD (chemical oxygen demand) and monitoring method thereof | |
| CN100504359C (en) | On-line monitoring chemical light-illuminating detector for contaminant in aquatic sample | |
| CN101419168B (en) | Activated sludge solubleness COD measuring method | |
| CN204924952U (en) | Online water quality analyzer ware of chemical oxygen demand | |
| CN206161639U (en) | Water quality monitoring system | |
| CN112067553A (en) | COD water quality on-line detector | |
| CN102768191A (en) | Method for easily detecting trace thallium in water | |
| CN105842363B (en) | It is a kind of based on the COD detecting and analysing systems of supercritical water oxidation method and its application | |
| CN104764726A (en) | Water quality monitoring instrument and method | |
| CN201885970U (en) | Jet extraction-infrared phenol tester | |
| CN202057660U (en) | Online monitoring instrument for total mercury in water utilizing ultraviolet digestion method | |
| CN204514797U (en) | A kind of online CODcr Analytical system being applicable to high chlorine sewage | |
| CN202057662U (en) | On-line water total lead monitoring instrument adopting ultraviolet digestion method | |
| CN207650095U (en) | A kind of device for realizing on-line monitoring river pollution by light reaction | |
| CN214374318U (en) | Device for detecting COD content in water | |
| CN105467139A (en) | Chemical oxygen demand online monitoring method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201211 |