CN102103088A - Device and method for measuring water quality chemical oxygen demand by ozone method for acquiring total light intensity - Google Patents
Device and method for measuring water quality chemical oxygen demand by ozone method for acquiring total light intensity Download PDFInfo
- Publication number
- CN102103088A CN102103088A CN2010106051155A CN201010605115A CN102103088A CN 102103088 A CN102103088 A CN 102103088A CN 2010106051155 A CN2010106051155 A CN 2010106051155A CN 201010605115 A CN201010605115 A CN 201010605115A CN 102103088 A CN102103088 A CN 102103088A
- Authority
- CN
- China
- Prior art keywords
- water
- water sample
- ozone
- reaction
- reaction chamber
- 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
Landscapes
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
Abstract
The invention provides a device and a method for measuring water quality chemical oxygen demand (COD) by an ozone method for acquiring the total light intensity. The water quality COD is accurately measured by continuously applying ozone to a water sample with a fixed volume, performing chemical aerobic reaction on the water sample and measuring the total light intensity produced during the reaction. The main body of the device for measuring the water quality COD is a light-tight reaction chamber, wherein the reaction chamber is provided with a water inlet, a water outlet and a ventilation hole; a lens is arranged on one side of the reaction chamber; an aeration sheet is arranged below the reaction chamber and is communicated with an ozone chamber; the water inlet and the water outlet are connected with a water sample switching device; a photoelectric sensor is arranged at a focal point of the lens outside the reaction chamber; an output signal port of the photoelectric sensor is connected to a data processing circuit; the data processing circuit is connected with a control circuit; and a control signal output end of the control circuit is connected with the water sample switching device. The device and the method are suitable for measuring a water sample with a high COD value, a measurement result does not depend on the flow rate of a pump, and high testing accuracy is guaranteed.
Description
Technical field
The present invention relates to a kind of real-time measurement apparatus and measuring method of hydrochemistry oxygen demand, belong to the water quality monitoring technology in the environmental monitoring technology field, is a kind of ozone method hydrochemistry oxygen demand measuring apparatus and measuring method of gathering the light total amount specifically.
Background technology
Measure hydrochemistry oxygen demand (being called for short " COD ") at present both at home and abroad still based on the lab analysis method.Along with continuous development, the especially fast development of computer technology of new material, new technology, new technology, some new water quality parameter analytical and testing instruments have appearred in recent years.These analytical and testing instruments mainly are divided into two kinds of forms: a kind of is to utilize sensor directly to measure under water, and another kind is to utilize " microscale experiment chamber " method that the chemical laboratory method is integrated in the instrument to measure.Sensor method has electrode sensor method and Fiber Optical Sensor Based, and the electrode sensor method is affected by environment bigger, as temperature, acidity, ionic strength and suspension etc.; The sensor long-time stability of Fiber Optical Sensor Based are not enough, serviceable life is short and selectivity is bad.The instrument of " microscale experiment chamber " method of utilization exploitation is bulky, complex structure is unsuitable for carrying out continuous, real-time measurement.
Utilize the hydrochemistry oxygen demand measuring instrument of ozone oxidation chemiluminescence principle development need not add reagent, do not produce secondary pollution, response speed is fast, avoided of the influence of water body high concentration ion chlorion to accuracy, can carry out the real-time measurement of hydrochemistry oxygen demand, but its flow injection mode that adopts at present is a kind of mode that real-time light intensity is represented chemical oxygen demand (COD) of gathering, and following some deficiency is arranged:
(1) source of the gas is that the ozone output of the ozone generator of air is subjected to the influence of humidity and oxygen content bigger, is difficult for steady in a long-termly, therefore, represents the chemical oxygen demand (COD) time error bigger gathering real-time light intensity.
(2) solubleness of ozone in water sample is subjected to water sample quality and its temperature effect, can not reach very high, is suitable for the measurement of seawater cod, does not fit into the measurement of high COD value water sample.
(3) flow pump of control water sample flow is big, fragile because of long-term non-stop run mechanical wear.
Summary of the invention
The objective of the invention is deficiency at the prior art existence, a kind of ozone method hydrochemistry oxygen demand measuring apparatus of gathering the light total amount is provided, do not rely on the big or small and stable of ozone generator output, reduce of the influence of ozone solution degree to measurement result, can measure high COD value water sample, and the non-stop run time of minimizing flow pump, improve measuring system reliability and serviceable life; A kind of ozone method hydrochemistry oxygen demand measuring method of gathering the light total amount also is provided, is adapted to the measurement of high COD value water sample, the measuring accuracy height.
The objective of the invention is to be achieved through the following technical solutions:
A kind of ozone method hydrochemistry oxygen demand measuring apparatus of gathering the light total amount, comprise chemical reaction equipment, water sample changes the road device, ozone generating-device, sudden and violent gas sheet, photoelectric sensor, data processing circuit and control circuit, it is characterized in that: described chemical reaction equipment is the reaction cavity of a close light, reaction cavity is provided with water inlet, water delivering orifice and air hole, one side of reaction cavity is lens, the following of reaction cavity is described sudden and violent gas sheet, sudden and violent gas sheet is communicated with Ozone chamber, water inlet changes the road device with water delivering orifice and water sample and is connected, photoelectric sensor is installed in the focus place of lens outside the reaction cavity, the output signal port of photoelectric sensor is connected to data processing circuit, data processing circuit is connected with control circuit, and the control signal output ends of control circuit connects described water sample and changes the road device.
To improvement of the technical scheme: described water sample changes the road device and is made up of pump, water sample water intaking valve, reaction chamber water intaking valve, reaction chamber outlet valve, draining valve, the inlet of water sample water intaking valve is connected to the water source, the inlet of reaction chamber outlet valve is connected to the water delivering orifice of reaction cavity, the outlet of water sample water intaking valve and reaction chamber outlet valve is connected to the inlet of pump, delivery side of pump is connected to the inlet of reaction chamber water intaking valve and draining valve, and the outlet of reaction chamber water intaking valve is connected to the water inlet of reaction chamber.
To further improvement in the technical proposal: the cavity material of described reaction cavity is a teflon, and the material of described sudden and violent gas sheet is a polyfluortetraethyleventilated ventilated membrane.
To further improvement in the technical proposal: described lens are optical glass convex lens of high index of refraction and high projection ratio.
To further improvement in the technical proposal: water sample water intaking valve, reaction chamber outlet valve and reaction chamber water intaking valve, draining valve that described water sample changes in the device of road are motorized valves.
To further improvement in the technical proposal: water sample water intaking valve, reaction chamber outlet valve and reaction chamber water intaking valve, draining valve that described water sample changes in the device of road are the multidigit multiport valves.
A kind of ozone method hydrochemistry oxygen demand measuring method of gathering the light total amount, it is characterized in that: use the sudden and violent gas sheet that is communicated with Ozone chamber to be continuously applied ozone the water sample in the reaction cavity of a close light, the photoelectric sensor at the focus place of the lens of data processing circuit by being installed in reaction cavity one side is according to the fixed sample rate light intensity signal of sampling, real time record is also judged, when the average of the signal that samples at the appointed time during smaller or equal to the signal threshold value of regulation, the chemical oxygen demand reaction that water quality is described finishes, stop sampling, the signal that collects is sued for peace, and the result of this summation is as the value of hydrochemistry oxygen demand.
To further improvement in the technical proposal:
Concrete measuring process is as follows:
1., at first water sample is carried out pre-service, promptly use 0.45 μ m membrane filtration and 40 ℃ of following preheatings;
2., control circuit makes water sample change water sample water intaking valve, reaction chamber water intaking valve and pump work in the device of road then, with water sample suction reaction cavity, delay time waited to take out in several minutes full after, control circuit cuts out water sample water intaking valve, reaction chamber water intaking valve and pump;
3., control circuit continues ozone is fed reaction cavity from Ozone chamber the light signal of photoelectric sensor detection reaction generation simultaneously;
4., data processing circuit is according to the output signal of fixed sample rate sampled light electric transducer, real time record is also judged;
5., when the average of the signal that samples at the appointed time during smaller or equal to the signal threshold value of regulation, illustrate that the chemical oxygen demand reaction of water quality finishes, stop to sample;
6., the signal that collects is sued for peace, send into data processing unit and carry out linearity correction and handle, store then, show;
7., the feeding of control circuit cancellation ozone, make water sample change reaction chamber outlet valve, draining valve and pump work in the device of road, extract water sample out reaction cavity and emptying;
8., the cleaning reaction cavity, distilled water is used as water sample, repeat above step (1) (2) (3), delay time after several minutes, repeating step 7..
Advantage of the present invention and good effect are:
1, under the situation of fixing volume of water sample, use ozone to come chemical oxygen demand material in the oxidation water sample continuously, and the light total amount in the use course of reaction characterizes the chemical oxygen demand amount of substance, make the result of measurement not rely on the big or small and stable of ozone generator output, also reduce the influence of ozone solution degree to measurement result, error is little, makes ozone forensic chemistry oxygen demand measuring method can measure high COD value water sample, water sample COD value is high more, and the time of measurement is long more.
2, utilized the stability of the reliability unit rate of flow pump of valve to want high a lot, the quantity, particularly measurement result that reduce flow pump with the quantity that increases valve do not rely on the flow of pump, thereby have improved the long-time stability and the serviceable life of measurement mechanism.
Description of drawings
Fig. 1 gathers the structural drawing of the reaction cavity in the ozone method hydrochemistry oxygen demand measuring apparatus of light total amount for the present invention;
The water sample that Fig. 2 gathers for the present invention in the ozone method hydrochemistry oxygen demand measuring apparatus of light total amount changes the road structure drawing of device;
Fig. 3 measures curvilinear coordinates figure for the ozone method hydrochemistry oxygen demand measuring apparatus that the present invention gathers the light total amount.
Embodiment
Below in conjunction with drawings and Examples the present invention is described in further detail:
A kind of ozone method hydrochemistry oxygen demand measuring apparatus of gathering the light total amount of the present invention, comprise chemical reaction equipment, water sample changes the road device, ozone generating-device, sudden and violent gas sheet, photoelectric sensor, data processing circuit and control circuit, it is characterized in that: described chemical reaction equipment is the reaction cavity of a close light, reaction cavity is provided with water inlet, water delivering orifice and air hole, one side of reaction cavity is lens, the following of reaction cavity is described sudden and violent gas sheet, sudden and violent gas sheet is communicated with Ozone chamber, water inlet changes the road device with water delivering orifice and water sample and is connected, photoelectric sensor is installed in the focus place of lens outside the reaction cavity, the output signal port of photoelectric sensor is connected to data processing circuit, data processing circuit is connected with control circuit, and the control signal output ends of control circuit connects described water sample and changes the road device.
Referring to Fig. 1, the reaction cavity 5 of gathering the ozone method hydrochemistry oxygen demand measuring apparatus of light total amount be one by high temperature resistant, anticorrosive, oxidation resistant nonmetallic materials teflon is the container of the close light of main body, one side of reaction cavity 5 is convex lens 3 of being made by the optical glass of high index of refraction and high projection ratio, air hole 1 on the reaction cavity 5 communicates with atmosphere, be used for equilibrium air pressure, water inlet 2 on the reaction cavity 5 is connected with the reaction chamber water intaking valve 13 that water sample changes in the road device 9, water delivering orifice 8 on the reaction cavity 5 is connected with the reaction chamber outlet valve 16 that water sample changes in the road device 9, the sudden and violent gas sheet 7 that reaction cavity 5 bottoms have polyfluortetraethyleventilated ventilated membrane to make, sudden and violent gas sheet 7 is used for seeing through ozone blocking-up water sample, and can make ozone evenly sudden and violent gas in water sample, sudden and violent gas sheet 7 is communicated with Ozone chamber 6, Ozone chamber 6 usefulness stainless steel materials are made, photoelectric sensor 4 is installed in the focus place of reaction cavity 5 outer lens 3, the output signal port of photoelectric sensor 4 is connected to data processing circuit 10, data processing circuit 10 is connected with control circuit 11, and the control signal output ends of control circuit 11 is connected to water sample and changes road device 9.
Referring to Fig. 2, the pump 15 that water sample changes in the road device 9 can be a flow pump, it also can be common lifting pump, valve 12 valves 16 and valve 13 valves 14 are reduced forms of multidigit multiport valve, enumerated a kind of structure that multidigit is led to more, valve body material adopts the nonmetallic materials of seawater corrosion resistance, controls automatically for making things convenient for control circuit, adopts motorized valve.Arrow has been enumerated the flow direction of water sample.
A kind of ozone method hydrochemistry oxygen demand measuring method of gathering the light total amount of the present invention, use the sudden and violent gas sheet 7 that is communicated with Ozone chamber 6 to be continuously applied ozone to the water sample in the chemical reaction cavity 5 of a close light, the photoelectric sensor 4 at the focus place of the lens 3 of data processing circuit 10 by being installed in reaction cavity 5 one sides is according to fixed sample rate sampling light intensity signal, real time record is also judged, when the average of the signal that samples at the appointed time during smaller or equal to the signal threshold value of regulation, the chemical oxygen demand reaction that water quality is described finishes, stop sampling, the signal (as shown in Figure 3) that collects is sued for peace, and the result of this summation is as the value of hydrochemistry oxygen demand.
Actual measurement process of the present invention is as follows:
1., at first water sample is carried out pre-service, promptly use 0.45 μ m membrane filtration and 40 ℃ of following preheatings;
2., control circuit makes water sample change water sample water intaking valve 12 in the road device 9, reaction chamber water intaking valve 13 and pump 15 work then, with water sample suction reaction cavity 5, delay time waited to take out in several minutes full after, control circuit cuts out water sample water intaking valve 12, reaction chamber water intaking valve 13 and pump 15;
3., control circuit continues the Ozone chamber 06 feeding reaction cavity 5 of ozone from Fig. 1, the light signal of photoelectric sensor 4 detection reactions generation simultaneously;
4., data processing circuit 10 is according to the output signal of fixed sample rate sampled light electric transducer 4, real time record is also judged;
5., when the average of the signal that samples at the appointed time during smaller or equal to the signal threshold value of regulation, illustrate that the chemical oxygen demand reaction of water quality finishes, stop to sample;
6., the signal (as shown in Figure 3) that collects is sued for peace, send into data processing unit and carry out linearity correction and handle, store then, show;
7., the feeding of control circuit 11 cancellation ozone, make water sample among Fig. 2 change reaction chamber outlet valve 16, draining valve 14 and pump 15 work in the road device 9, extract water sample out reaction cavity and emptying;
8., the cleaning reaction cavity, distilled water is used as water sample, repeat above step (1) (2) (3), delay time after several minutes, repeating step 7..
Above-mentioned explanation is represented: the present invention applies ozone continuously to the water sample of fixed volume one by one, make it carry out the chemical oxygen demand reaction, stop to remove again ozone up to reaction, accurately calculate the hydrochemistry oxygen demand by measuring the total light intensity that produces in the course of reaction.
Above-mentioned explanation is not to be limitation of the present invention, and the present invention also is not limited to above-mentioned giving an example, those skilled in the art, and in essential scope of the present invention, the variation of making, remodeling, interpolation or replacement all should belong to protection scope of the present invention.
Claims (8)
1. ozone method hydrochemistry oxygen demand measuring apparatus of gathering the light total amount, comprise chemical reaction equipment, water sample changes the road device, ozone generating-device, sudden and violent gas sheet, photoelectric sensor, data processing circuit and control circuit, it is characterized in that: described chemical reaction equipment is the reaction cavity of a close light, reaction cavity is provided with water inlet, water delivering orifice and air hole, one side of reaction cavity is lens, the following of reaction cavity is described sudden and violent gas sheet, sudden and violent gas sheet is communicated with Ozone chamber, water inlet changes the road device with water delivering orifice and water sample and is connected, photoelectric sensor is installed in the focus place of lens outside the reaction cavity, the output signal port of photoelectric sensor is connected to data processing circuit, data processing circuit is connected with control circuit, and the control signal output ends of control circuit connects described water sample and changes the road device.
2. according to the ozone method hydrochemistry oxygen demand measuring apparatus of the described collection light of claim 1 total amount, it is characterized in that: described water sample changes the road device and is made up of pump, water sample water intaking valve, reaction chamber water intaking valve, reaction chamber outlet valve, draining valve, the inlet of water sample water intaking valve is connected to the water source, the inlet of reaction chamber outlet valve is connected to the water delivering orifice of reaction cavity, the outlet of water sample water intaking valve and reaction chamber outlet valve is connected to the inlet of pump, delivery side of pump is connected to the inlet of reaction chamber water intaking valve and draining valve, and the outlet of reaction chamber water intaking valve is connected to the water inlet of reaction chamber.
3. according to the ozone method hydrochemistry oxygen demand measuring apparatus of claim 1 or 2 described collection light total amounts, it is characterized in that: the cavity material of described reaction cavity is a teflon, and the material of described sudden and violent gas sheet is a polyfluortetraethyleventilated ventilated membrane.
4. according to the ozone method hydrochemistry oxygen demand measuring apparatus of the described collection light of claim 3 total amount, it is characterized in that: described lens are optical glass convex lens of high index of refraction and high projection ratio.
5. according to the ozone method hydrochemistry oxygen demand measuring apparatus of claim 1 or 2 described collection light total amounts, it is characterized in that: water sample water intaking valve, reaction chamber outlet valve and reaction chamber water intaking valve, draining valve that described water sample changes in the device of road are motorized valves.
6. according to the ozone method hydrochemistry oxygen demand measuring apparatus of the described collection light of claim 5 total amount, it is characterized in that: water sample water intaking valve, reaction chamber outlet valve and reaction chamber water intaking valve, draining valve that described water sample changes in the device of road are the multidigit multiport valves.
7. ozone method hydrochemistry oxygen demand measuring method of gathering the light total amount, it is characterized in that: use the sudden and violent gas sheet that is communicated with Ozone chamber to be continuously applied ozone the water sample in the reaction cavity of a close light, the photoelectric sensor at the focus place of the lens of data processing circuit by being installed in reaction cavity one side is according to the fixed sample rate light intensity signal of sampling, real time record is also judged, when the average of the signal that samples at the appointed time during smaller or equal to the signal threshold value of regulation, the chemical oxygen demand reaction that water quality is described finishes, stop sampling, the signal that collects is sued for peace, and the result of this summation is as the value of hydrochemistry oxygen demand.
8. according to the ozone method hydrochemistry oxygen demand measuring method of the described collection light of claim 7 total amount, it is characterized in that:
Concrete measuring process is as follows:
1., at first water sample is carried out pre-service, promptly use 0.45 μ m membrane filtration and 40 ℃ of following preheatings;
2., control circuit makes water sample change water sample water intaking valve, reaction chamber water intaking valve and pump work in the device of road then, with water sample suction reaction cavity, delay time waited to take out in several minutes full after, control circuit cuts out water sample water intaking valve, reaction chamber water intaking valve and pump;
3., control circuit continues ozone is fed reaction cavity from Ozone chamber the light signal of photoelectric sensor detection reaction generation simultaneously;
4., data processing circuit is according to the output signal of fixed sample rate sampled light electric transducer, real time record is also judged;
5., when the average of the signal that samples at the appointed time during smaller or equal to the signal threshold value of regulation, illustrate that the chemical oxygen demand reaction of water quality finishes, stop to sample;
6., the signal that collects is sued for peace, send into data processing unit and carry out linearity correction and handle, store then, show;
7., the feeding of control circuit cancellation ozone, make water sample change reaction chamber outlet valve, draining valve and pump work in the device of road, extract water sample out reaction cavity and emptying;
8., the cleaning reaction cavity, distilled water is used as water sample, repeat above step (1) (2) (3), delay time after several minutes, repeating step 7..
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106051155A CN102103088A (en) | 2010-12-27 | 2010-12-27 | Device and method for measuring water quality chemical oxygen demand by ozone method for acquiring total light intensity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106051155A CN102103088A (en) | 2010-12-27 | 2010-12-27 | Device and method for measuring water quality chemical oxygen demand by ozone method for acquiring total light intensity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102103088A true CN102103088A (en) | 2011-06-22 |
Family
ID=44156020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106051155A Pending CN102103088A (en) | 2010-12-27 | 2010-12-27 | Device and method for measuring water quality chemical oxygen demand by ozone method for acquiring total light intensity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102103088A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103575869A (en) * | 2013-10-31 | 2014-02-12 | 江南大学 | Method and device for detecting COD (chemical oxygen demand) of water body through synergy of ozone and ultraviolet |
| CN106770212A (en) * | 2016-11-22 | 2017-05-31 | 山东省科学院海洋仪器仪表研究所 | The device of dissolved organic carbon content in a kind of on-line monitoring seawater |
| CN108426615A (en) * | 2017-01-27 | 2018-08-21 | 哈米尔顿森德斯特兰德公司 | Sensing flux ozone converter |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1193060A (en) * | 1997-03-06 | 1998-09-16 | 包素文 | Water-proof air-permeable fabric and producing method thereof |
| CN2366167Y (en) * | 1998-10-09 | 2000-03-01 | 北京万拓仪器有限公司 | Diaphragm separation type gas/liquid separator |
| CN1431485A (en) * | 2003-01-30 | 2003-07-23 | 山东省科学院海洋仪器仪表研究所 | Method for measuring chemistry oxygen consumption of sea water based on luminous intensity principle of ozone oxidation |
| CN1608719A (en) * | 2003-10-24 | 2005-04-27 | 深圳奥特迅电气设备有限公司 | Oil-gas separating film, its making process and the gas sensor therewith |
| CN2804853Y (en) * | 2005-06-07 | 2006-08-09 | 国家海洋局第一海洋研究所 | Circulation type testing pond |
| CN1904428A (en) * | 2006-08-17 | 2007-01-31 | 中国农业大学 | Multiposition multipath cock valve |
| CN101237063A (en) * | 2007-12-19 | 2008-08-06 | 华南理工大学 | Self-medium coupled microbe fuel battery for single room micro filtering |
| CN101547868A (en) * | 2006-12-07 | 2009-09-30 | 捷通国际有限公司 | Fluid flow director for water treatment system |
| CN101566399A (en) * | 2009-04-03 | 2009-10-28 | 李明知 | Water-saving anti-freezing apparatus for solar heater pipe |
| CN101629887A (en) * | 2009-08-24 | 2010-01-20 | 杭州东贝机电设备有限公司 | Hydraulic testing machine and testing method of pressure gas cylinder |
| JP4594120B2 (en) * | 2005-02-02 | 2010-12-08 | 東亜ディーケーケー株式会社 | Environmental measurement equipment |
| CN201935868U (en) * | 2010-12-27 | 2011-08-17 | 山东省科学院海洋仪器仪表研究所 | Measuring device for water quality chemical oxygen demand with ozone method for collecting total light quantity |
-
2010
- 2010-12-27 CN CN2010106051155A patent/CN102103088A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1193060A (en) * | 1997-03-06 | 1998-09-16 | 包素文 | Water-proof air-permeable fabric and producing method thereof |
| CN2366167Y (en) * | 1998-10-09 | 2000-03-01 | 北京万拓仪器有限公司 | Diaphragm separation type gas/liquid separator |
| CN1431485A (en) * | 2003-01-30 | 2003-07-23 | 山东省科学院海洋仪器仪表研究所 | Method for measuring chemistry oxygen consumption of sea water based on luminous intensity principle of ozone oxidation |
| CN1608719A (en) * | 2003-10-24 | 2005-04-27 | 深圳奥特迅电气设备有限公司 | Oil-gas separating film, its making process and the gas sensor therewith |
| JP4594120B2 (en) * | 2005-02-02 | 2010-12-08 | 東亜ディーケーケー株式会社 | Environmental measurement equipment |
| CN2804853Y (en) * | 2005-06-07 | 2006-08-09 | 国家海洋局第一海洋研究所 | Circulation type testing pond |
| CN1904428A (en) * | 2006-08-17 | 2007-01-31 | 中国农业大学 | Multiposition multipath cock valve |
| CN101547868A (en) * | 2006-12-07 | 2009-09-30 | 捷通国际有限公司 | Fluid flow director for water treatment system |
| CN101237063A (en) * | 2007-12-19 | 2008-08-06 | 华南理工大学 | Self-medium coupled microbe fuel battery for single room micro filtering |
| CN101566399A (en) * | 2009-04-03 | 2009-10-28 | 李明知 | Water-saving anti-freezing apparatus for solar heater pipe |
| CN101629887A (en) * | 2009-08-24 | 2010-01-20 | 杭州东贝机电设备有限公司 | Hydraulic testing machine and testing method of pressure gas cylinder |
| CN201935868U (en) * | 2010-12-27 | 2011-08-17 | 山东省科学院海洋仪器仪表研究所 | Measuring device for water quality chemical oxygen demand with ozone method for collecting total light quantity |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103575869A (en) * | 2013-10-31 | 2014-02-12 | 江南大学 | Method and device for detecting COD (chemical oxygen demand) of water body through synergy of ozone and ultraviolet |
| CN106770212A (en) * | 2016-11-22 | 2017-05-31 | 山东省科学院海洋仪器仪表研究所 | The device of dissolved organic carbon content in a kind of on-line monitoring seawater |
| CN106770212B (en) * | 2016-11-22 | 2023-08-25 | 山东省科学院海洋仪器仪表研究所 | Device for on-line monitoring content of soluble organic carbon in seawater |
| CN108426615A (en) * | 2017-01-27 | 2018-08-21 | 哈米尔顿森德斯特兰德公司 | Sensing flux ozone converter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2824152B2 (en) | Fluid medium analyzer | |
| CN101788522B (en) | Chemical oxygen demand (COD) on-line monitoring device and method based on boron-doped diamond membrane electrode | |
| CN104849422A (en) | Ammonia nitrogen on-line monitoring system and method thereof | |
| CN102313717B (en) | Porous silicon micro-cavity biosensor and its preparation method | |
| CN102841060B (en) | On-line water quality quick detection system | |
| CN203365316U (en) | Multi-parameter water quality analyzer | |
| CN206772932U (en) | A kind of device of on-line checking mixed gas concentration | |
| CN102466636A (en) | Device for detecting marine volatile sulfur compounds with ultraviolet fluorescence method and manufacture method of device | |
| US20190210897A1 (en) | Electrochemical analysis device for reagentless detection | |
| CN102298067B (en) | Full-automatic on-line monitoring system of COD (chemical oxygen demand) and monitoring method thereof | |
| CN102103088A (en) | Device and method for measuring water quality chemical oxygen demand by ozone method for acquiring total light intensity | |
| JPH10512668A (en) | Device for measuring the partial pressure of gas dissolved in liquid | |
| CN201307092Y (en) | A ultraviolet absorption method portable stack gas, auto car tail gas measuring apparatus | |
| CN201935868U (en) | Measuring device for water quality chemical oxygen demand with ozone method for collecting total light quantity | |
| CN202886139U (en) | Vacuum sampler for liquid food | |
| CN107138112A (en) | A kind of multifunctional light electrochemistry two-compartment reactor and its application | |
| CN208091910U (en) | A kind of device for analyzing on-line checking Nitrate In Sea Water content based on optofluidic | |
| CN204479564U (en) | Based on the semisubmersible Water Test Kits of wireless telecommunications | |
| CN104062335A (en) | Method and device for electrochemical automatic monitoring of COD combined with water heavy metal ions | |
| CN102384901B (en) | Chemical oxygen demand detection method and device | |
| CN202041462U (en) | Portable flue gas analyzer | |
| CN210953907U (en) | Sewage treatment plant toxicity of intaking on-line measuring device | |
| CN210665501U (en) | Water quality monitoring system | |
| CN107850562B (en) | Electrochemical measuring cell for measuring the content of chlorine compounds in water | |
| CN107677657B (en) | Fluorescence detection pool for detecting concentration of dissolved oxygen and manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110622 |