CN206583877U - A kind of in-situ chemical oxygen demand on-line detector - Google Patents
A kind of in-situ chemical oxygen demand on-line detector Download PDFInfo
- Publication number
- CN206583877U CN206583877U CN201720254089.3U CN201720254089U CN206583877U CN 206583877 U CN206583877 U CN 206583877U CN 201720254089 U CN201720254089 U CN 201720254089U CN 206583877 U CN206583877 U CN 206583877U
- Authority
- CN
- China
- Prior art keywords
- pump
- water sample
- detector
- sample pretreatment
- pool
- 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.)
- Expired - Fee Related
Links
- 239000000126 substance Substances 0.000 title claims abstract description 20
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 19
- 239000001301 oxygen Substances 0.000 title claims abstract description 19
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 50
- 230000002572 peristaltic effect Effects 0.000 claims abstract description 35
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 27
- 238000004458 analytical method Methods 0.000 claims abstract description 10
- 230000037452 priming Effects 0.000 claims abstract description 10
- 238000005070 sampling Methods 0.000 claims abstract description 7
- 239000000523 sample Substances 0.000 claims description 46
- 230000029087 digestion Effects 0.000 claims description 27
- 239000007788 liquid Substances 0.000 claims description 10
- 239000002699 waste material Substances 0.000 claims description 9
- 238000003918 potentiometric titration Methods 0.000 claims description 5
- 239000000243 solution Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 229920000742 Cotton Polymers 0.000 claims description 3
- IMBKASBLAKCLEM-UHFFFAOYSA-L ferrous ammonium sulfate (anhydrous) Chemical compound [NH4+].[NH4+].[Fe+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O IMBKASBLAKCLEM-UHFFFAOYSA-L 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 2
- 239000005864 Sulphur Substances 0.000 claims description 2
- 239000012266 salt solution Substances 0.000 claims description 2
- 239000012209 synthetic fiber Substances 0.000 claims description 2
- 229920002994 synthetic fiber Polymers 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 8
- 238000001914 filtration Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000010561 standard procedure Methods 0.000 description 3
- DOBUSJIVSSJEDA-UHFFFAOYSA-L 1,3-dioxa-2$l^{6}-thia-4-mercuracyclobutane 2,2-dioxide Chemical compound [Hg+2].[O-]S([O-])(=O)=O DOBUSJIVSSJEDA-UHFFFAOYSA-L 0.000 description 2
- 229920002145 PharMed Polymers 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- ZLXPLDLEBORRPT-UHFFFAOYSA-M [NH4+].[Fe+].[O-]S([O-])(=O)=O Chemical compound [NH4+].[Fe+].[O-]S([O-])(=O)=O ZLXPLDLEBORRPT-UHFFFAOYSA-M 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229940074994 mercuric sulfate Drugs 0.000 description 2
- 229910000372 mercury(II) sulfate Inorganic materials 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 description 2
- 238000007781 pre-processing Methods 0.000 description 2
- YPNVIBVEFVRZPJ-UHFFFAOYSA-L silver sulfate Chemical compound [Ag+].[Ag+].[O-]S([O-])(=O)=O YPNVIBVEFVRZPJ-UHFFFAOYSA-L 0.000 description 2
- 229910000367 silver sulfate Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000004313 potentiometry Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model is related to a kind of in-situ chemical oxygen demand on-line detector, including sampling system, pretreatment system and analysis system, pretreatment system includes the water sample pretreatment pool being connected with self priming pump, filter screen is provided with water sample pretreatment pool, the inner chamber of water sample pretreatment pool is divided into upper plenum and lower cavity by filter screen, in lower cavity supersonic generator is provided with positioned at the bottom of water sample pretreatment pool, the bottom of water sample pretreatment pool is provided with the one-level discharge outlet connected with lower cavity, and the side of water sample pretreatment pool is provided with the Municipal secondary effluent mouthful connected with upper plenum；Analysis system includes housing, it is built in the detector of housing, the feed liquor peristaltic pump being connected with detector, the pump housing connection feed liquor pump line and Pump for giving-out pipe of feed liquor peristaltic pump, feed liquor pump line is connected with the upper plenum of water sample pretreatment pool, and Pump for giving-out pipe is connected with detector, and the side of housing is additionally provided with multiple reagent bottles, reagent bottle is connected by Reagent Tube and reagent peristaltic pump with detector, and COD testing efficiency and precision are high.
Description
Technical field
The utility model is related to water sample chemical oxygen demand detection instrument, especially a kind of in-situ chemical oxygen demand on-line checking
Instrument.
Background technology
COD COD (Chemical Oxygen Demand) is chemically to measure to need to be oxidized in water sample
Reducing substances amount.In river pollution and the operational management of industrial wastewater Quality Research and waste water treatment plant, it
It is an Organic Pollution parameter that is important and can comparatively fast determining, is often represented with symbol COD.
Recognize in market survey：When testing surface water and waste water, the existing COD on-line detectors of in the market
There is fault rate height, the larger defect of test result error compared with standard method in device.Due to long-time non-stop run, water quality
The most common failure of COD on-line checking instruments mainly has two：One is pipe breakage, the second is wriggling failure of pump.This is instrument
Hidden danger has been buried in the stable operation of device, while adding maintenance cost.To find out its cause, mainly there is two.First, majority is on sale to be set
The standby pump line anti-wear performance used is poor, and common pump line is not suitable for long time continuous working, easily ruptures.Second, peristaltic pump
Placement location design is unreasonable, and positively fixed type, which is designed, causes wriggling pump water inlet probability to increase.
For test result and standard method error it is larger the problem of, its main cause has two：First, COD has larger
Part is present in particle, and the pretreatment system majority of existing equipment has carried out degranulation processing, the representative variation of sample；Its
Two, using AAS existing COD online detection instruments more, in practice it has proved that, when low concentration is tested, error is larger.
Utility model content
The purpose of this utility model be in order to solve the defect present in COD on-line checkings instrument in the prior art there is provided
A kind of in-situ chemical oxygen demand on-line detector.
To achieve these goals, the technical solution adopted in the utility model is：
A kind of in-situ chemical oxygen demand on-line detector, including sampling system, pretreatment system and analysis system, sampling
System includes self priming pump, and self priming pump connection probe tube, the water sucking mouth of probe tube is upward, the end connection filtering grid of probe tube,
Filter grid case is below the waterline of water sample；
Pretreatment system includes being provided with filter screen, filter screen in the water sample pretreatment pool being connected with self priming pump, water sample pretreatment pool
The inner chamber of water sample pretreatment pool is divided into upper plenum and lower cavity, lower cavity positioned at the bottom of water sample pretreatment pool provided with super
Sonic generator, the bottom of water sample pretreatment pool is provided with the one-level discharge outlet connected with lower cavity, the side of water sample pretreatment pool
Provided with the Municipal secondary effluent mouthful connected with upper plenum；
Analysis system includes housing, is built in the detector of housing, the feed liquor peristaltic pump being connected with detector, and feed liquor is wriggled
The pump housing end connection feed liquor pump line and Pump for giving-out pipe of pump, feed liquor pump line are connected with the upper plenum of water sample pretreatment pool, Pump for giving-out
Pipe is connected with detector, and the side of housing is additionally provided with multiple reagent bottles, and reagent bottle passes through Reagent Tube and reagent peristaltic pump and detection
Instrument is connected；
The end of the feed liquor pump line is provided with secondary filter core, and the material of secondary filter core is environmentally friendly synthetic fibers filtering
Cotton；
The feed liquor peristaltic pump, reagent peristaltic pump, the equal side of waste liquid peristaltic pump.
A kind of above-mentioned in-situ chemical oxygen demand on-line detector, the detector includes digestion system and automatic current potential drips
Determine system, digestion system includes the digestion pool of closing, and digestion pool bottom is provided with heating wire, and the side wall of digestion pool is provided with temperature
Meter, Automatic Potentiometric Titration System is automatical potentiometric titrimeter, the built-in l ferrous ammonium sulfate solution of automatical potentiometric titrimeter, ferrous sulfate
Ammonium salt solution is added dropwise in digestion pool.
A kind of above-mentioned in-situ chemical oxygen demand on-line detector, the top of the digestion pool is provided with Air cooler.
A kind of above-mentioned in-situ chemical oxygen demand on-line detector, the digestion pool is connected by waste liquid peristaltic pump and sewer pipe
Connect waste liquid barrel.
A kind of above-mentioned in-situ chemical oxygen demand on-line detector, a pair of reagent bottle and reagent the peristaltic pump quantity 1
Should.
The beneficial effects of the utility model are：The end of the upward water sucking mouth set-up mode of the detector and probe tube connects
Take over when grating lattice avoid low water level and suck mud scum, cause system jams；The setting of ultrasonic homogeneity pretreatment system so that
Larger particle is broken up in preprocessing process by physical action in water sample, while making pretreated water sample evenly, improves
The representativeness of testing sample, while increasing the accuracy of instrument test；Peristaltic pump pump line uses France Saint-Gobain Pharmed BPT
Long-life tube replaces common silica gel pump line, and pump line service life can improve more than 5 times, reduce the instrument maintenance frequency；Each is compacted
Dynamic pump places design and is changed to side by just putting, it is to avoid peristaltic pump waterlogged damage during leak.
Brief description of the drawings
Fig. 1 is schematic diagram of the present utility model；
Fig. 2 is the schematic diagram of the utility model feed liquor peristaltic pump.
Embodiment
As shown in Figure 1 to Figure 2, a kind of in-situ chemical oxygen demand on-line detector, including sampling system 1, pretreatment system 2
And analysis system 3, sampling system 1 includes self priming pump 11, the connection probe tube 12 of self priming pump 11, the water sucking mouth of probe tube 12 to
On, the end connection filtering grid 13 of probe tube 12, filtering grid 13 is located at the waterline of water sample below 14；
Pretreatment system 2 is included in the water sample pretreatment pool 21 being connected with self priming pump 11, water sample pretreatment pool 21 provided with filter
Net 22, the inner chamber of water sample pretreatment pool 21 is divided into upper plenum 23 and lower cavity 24, lower cavity 24 by filter screen 22 is located at water sample
The bottom of pretreatment pool 21 is provided with supersonic generator 25, and the bottom of water sample pretreatment pool 21 is provided with connected with lower cavity 24 one
Level discharge outlet 26, the side of water sample pretreatment pool 21 is provided with the Municipal secondary effluent mouthful 27 connected with upper plenum 23；
Analysis system 3 includes housing 31, is built in the detector of housing 31, the feed liquor peristaltic pump 32 being connected with detector,
The pump housing end connection feed liquor pump line 321 and Pump for giving-out pipe 322, feed liquor pump line 321 and water sample pretreatment pool of feed liquor peristaltic pump 32
21 upper plenum 23 is connected, and Pump for giving-out pipe 322 is connected with detector, and the side of housing 31 is additionally provided with multiple reagent bottles 33, reagent
Bottle 33 is connected by Reagent Tube 331 and reagent peristaltic pump 332 with detector, and reagent bottle 33 and the quantity of reagent peristaltic pump 332 are one by one
Correspondence.
Detector includes digestion system and Automatic Potentiometric Titration System, and digestion system includes the digestion pool 34 of closing, cleared up
The bottom of pond 34 is provided with heating wire 35, and the side wall of digestion pool 34 is provided with thermometer 36, and digestion pool 34 passes through the He of waste liquid peristaltic pump 37
Sewer pipe 38 connects waste liquid barrel 39.
Automatic Potentiometric Titration System is automatical potentiometric titrimeter 30, and the built-in iron ammonium sulfate of automatical potentiometric titrimeter 30 is molten
Liquid, l ferrous ammonium sulfate solution is added dropwise in digestion pool 34, and the top of digestion pool 34 is provided with Air cooler 341.
Further, the end of feed liquor pump line 321 is provided with secondary filter core 323, and the material of secondary filter core 323 is closed for environmental protection
Into fiber filter cotton, feed liquor peristaltic pump 32, reagent peristaltic pump 332, the equal side of waste liquid peristaltic pump 37 place sulphur in reagent bottle 33
Acid, silver sulfate, mercuric sulfate, potassium bichromate solution.
During detection, quantitative water sample is sent into by feed liquor peristaltic pump 32 and reagent peristaltic pump 332 first interior certainly in digestion pool 34
After dynamic mixing addition sulfuric acid, silver sulfate, mercuric sulfate, potassium bichromate, (upper end of digestion pool 34 is using air-cooled within 2 hours for heated backflow
Machine 341 prevents the heated effusion of organic matter)；Heating is finished, and keeps 60 ° of G or so temperature, by automatical potentiometric titrimeter 30 to clearing up
Pond 34 instills iron ammonium sulfate automatically, and the two-wave interpretation potentiometry required using national standard indicates titration end-point.According to electrolysis
Fe2+ consumptions calculate COD contents.The analysis process meets《Environmental protection product technical requirements COD (CODCr) water
Matter online automatic monitor》, and and national standard method (HJ/T377-2007)《The measure bichromate of water chemical oxygen demand
Method》(GB/T 11914-1989) is consistent substantially.
The end connection filtering grid 13 of the upward water sucking mouth set-up mode of the detector and probe tube 12 avoids low
Mud scum is sucked during water level, causes system jams；The setting of ultrasonic homogeneity pretreatment system so that larger particle exists in water sample
Broken up in preprocessing process by physical action, while making pretreated water sample evenly, improve the representativeness of testing sample, together
The accuracy of Shi Zengjia instrument tests；Peristaltic pump pump line replaces ordinary silicon using French Saint-Gobain Pharmed BPT long-life tubes
Glue pump line, pump line service life can improve more than 5 times, reduce the instrument maintenance frequency；Each peristaltic pump places design by just putting
It is changed to side, it is to avoid peristaltic pump waterlogged damage during leak；Detector includes the digestion pool of closing, and digestion pool bottom is provided with electric heating
Silk, the side wall of digestion pool is provided with thermometer, is mixed for water sample with medicine, reacts and provide suitable environment and temperature, just
Just post analysis, measurement.
The utility model is not limited to above-mentioned preferred forms, and anyone can draw under enlightenment of the present utility model
Other various forms of products, however, make any change in its shape or structure, it is every that there is same as the present application or phase
Approximate technical scheme, all falls within protection domain of the present utility model.
Claims (5)
1. a kind of in-situ chemical oxygen demand on-line detector, including sampling system, pretreatment system and analysis system, its feature
It is, sampling system includes self priming pump, self priming pump connection probe tube, the water sucking mouth of probe tube is upward, the end connection of probe tube
Grid is filtered, filter grid case is below the waterline of water sample；
Pretreatment system is included in the water sample pretreatment pool that be connected with self priming pump, water sample pretreatment pool provided with filter screen, and filter screen is by water
The inner chamber of sample pretreatment pool is divided into upper plenum and lower cavity, lower cavity is provided with ultrasonic wave positioned at the bottom of water sample pretreatment pool
Generator, the bottom of water sample pretreatment pool is provided with the one-level discharge outlet connected with lower cavity, and the side of water sample pretreatment pool is provided with
The Municipal secondary effluent mouthful connected with upper plenum；
Analysis system includes housing, is built in the detector of housing, the feed liquor peristaltic pump being connected with detector, feed liquor peristaltic pump
Pump housing end connects feed liquor pump line and Pump for giving-out pipe, and feed liquor pump line is connected with the upper plenum of water sample pretreatment pool, Pump for giving-out pipe and
Detector is connected, and the side of housing is additionally provided with multiple reagent bottles, and reagent bottle is connected by Reagent Tube and reagent peristaltic pump with detector
Connect；
The end of the feed liquor pump line is provided with secondary filter core, and the material of secondary filter core is environmentally friendly synthetic fibers filter cotton；
The feed liquor peristaltic pump, reagent peristaltic pump, the equal side of waste liquid peristaltic pump.
2. a kind of in-situ chemical oxygen demand on-line detector according to claim 1, it is characterised in that the detector bag
Digestion system and Automatic Potentiometric Titration System are included, digestion system includes the digestion pool of closing, and digestion pool bottom is provided with heating wire, disappeared
Xie Chi side wall is provided with thermometer, and Automatic Potentiometric Titration System is automatical potentiometric titrimeter, the built-in sulphur of automatical potentiometric titrimeter
Sour ferrous iron ammonium salt solution, l ferrous ammonium sulfate solution is added dropwise in digestion pool.
3. a kind of in-situ chemical oxygen demand on-line detector according to claim 2, it is characterised in that the digestion pool
Top is provided with Air cooler.
4. a kind of in-situ chemical oxygen demand on-line detector according to claim 2, it is characterised in that the digestion pool leads to
Cross waste liquid peristaltic pump and sewer pipe connection waste liquid barrel.
5. a kind of in-situ chemical oxygen demand on-line detector according to claim 1, it is characterised in that the reagent bottle and
Reagent peristaltic pump quantity is corresponded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720254089.3U CN206583877U (en) | 2017-03-14 | 2017-03-14 | A kind of in-situ chemical oxygen demand on-line detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720254089.3U CN206583877U (en) | 2017-03-14 | 2017-03-14 | A kind of in-situ chemical oxygen demand on-line detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206583877U true CN206583877U (en) | 2017-10-24 |
Family
ID=60113534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720254089.3U Expired - Fee Related CN206583877U (en) | 2017-03-14 | 2017-03-14 | A kind of in-situ chemical oxygen demand on-line detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206583877U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109164224A (en) * | 2018-09-29 | 2019-01-08 | 成都凯天电子股份有限公司 | water sample on-line dilution monitor |
-
2017
- 2017-03-14 CN CN201720254089.3U patent/CN206583877U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109164224A (en) * | 2018-09-29 | 2019-01-08 | 成都凯天电子股份有限公司 | water sample on-line dilution monitor |
| CN109164224B (en) * | 2018-09-29 | 2024-04-30 | 成都凯天电子股份有限公司 | Water sample on-line dilution monitor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206431040U (en) | A kind of Automatic On-line ammonia Nitrogen Analyzer | |
| CN201780281U (en) | Online water quality analyzer for permanganate index | |
| CN203405441U (en) | Instrument for detecting COD (chemical oxygen demand) of high-chlorine wastewater on line by basic potassium permanganate method | |
| CN201740756U (en) | On-line ammonia nitrogen monitoring system | |
| CN103149166A (en) | Dual-wavelength ultraviolet method organic wastewater chemical oxygen demand (COD) detection device and method | |
| CN206248652U (en) | Real-time in-situ water quality monitor | |
| CN206583877U (en) | A kind of in-situ chemical oxygen demand on-line detector | |
| CN202757888U (en) | Water hardness online detector | |
| CN205786430U (en) | A kind of Automatic continuous measures the device of solution ph | |
| CN209311141U (en) | Groundwater sampling detection device | |
| CN207281061U (en) | A kind of multi-period interval water quality monitoring system | |
| CN108872055A (en) | A kind of pre- deoxygenation detection of corrosion test solution and chemicals dosing plant and method | |
| CN102175506B (en) | Diluting device used for on-line water quality analysis | |
| CN1670509A (en) | Device for detecting chemical oxygen demand in water mass through ozone oxidation-chemoluminescence method | |
| CN206583645U (en) | A kind of total phosphorus on-line detector in situ | |
| CN215574623U (en) | High-precision overflow metering device applied to water quality online monitoring equipment | |
| CN211528143U (en) | Coal slime flocculation sedimentation test on-line tester | |
| CN212808259U (en) | Industrial waste water pH, ORP water quality analysis measuring device | |
| CN109207354B (en) | Microorganism fermentation gas production potential testing device | |
| CN207175972U (en) | The pH on-line measuring devices of nutrient solution in bioreactor | |
| CN110726657A (en) | Device for visually evaluating influence of tail water recharge on core sample | |
| CN205067357U (en) | Mobile detection device of online intermittent type of quality of water | |
| CN106896019A (en) | A kind of stress corrosion (cracking) test circulation loop exhaust apparatus and its application method | |
| CN111024794A (en) | Continuous monitor for nitrate nitrogen in water and operation method thereof | |
| CN213517109U (en) | Sewage sampling detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210908 Address after: 315048 west side of second floor, auxiliary building, No. 299, Xinmei Road, high tech Zone, Ningbo, Zhejiang Patentee after: Zhejiang Yongxin Testing Technology Co.,Ltd. Address before: 315000 room 547, No. 5, Lane 999, Yangfan Road, high tech Zone, Ningbo, Zhejiang Patentee before: NINGBO YIKEDA ENVIRONMENT TECHNOLOGY Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171024 |