CN102221497B - Water sample pretreatment device - Google Patents
Water sample pretreatment device Download PDFInfo
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- CN102221497B CN102221497B CN 201110069993 CN201110069993A CN102221497B CN 102221497 B CN102221497 B CN 102221497B CN 201110069993 CN201110069993 CN 201110069993 CN 201110069993 A CN201110069993 A CN 201110069993A CN 102221497 B CN102221497 B CN 102221497B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 118
- 230000029087 digestion Effects 0.000 claims abstract description 65
- 238000010438 heat treatment Methods 0.000 claims abstract description 58
- 238000001914 filtration Methods 0.000 claims abstract description 44
- 238000004140 cleaning Methods 0.000 claims abstract description 13
- 238000000967 suction filtration Methods 0.000 claims description 10
- 239000012528 membrane Substances 0.000 claims description 8
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 6
- 229910052753 mercury Inorganic materials 0.000 claims description 6
- 230000002572 peristaltic effect Effects 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 5
- 238000007781 pre-processing Methods 0.000 claims 1
- 239000007787 solid Substances 0.000 abstract description 8
- 238000012544 monitoring process Methods 0.000 abstract description 6
- 238000011282 treatment Methods 0.000 abstract description 6
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract 3
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 14
- 238000010586 diagram Methods 0.000 description 8
- 229910052757 nitrogen Inorganic materials 0.000 description 7
- 238000003828 vacuum filtration Methods 0.000 description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 229910052698 phosphorus Inorganic materials 0.000 description 5
- 239000011574 phosphorus Substances 0.000 description 5
- 239000011521 glass Substances 0.000 description 4
- 229910002651 NO3 Inorganic materials 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 1
- 238000004847 absorption spectroscopy Methods 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000005337 ground glass Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 150000002897 organic nitrogen compounds Chemical class 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention provides a water sample pretreatment device, comprising a water inlet, a filtration component and a water outlet. And the device further includes a heating component installed between the water inlet and the filtration component for heating a water sample to a predetermined temperature, and an ultraviolet digestion component disposed between the water inlet and the filtration component for conducting ultraviolet digestion to the water sample. The device performs heating and ultraviolet digestion treatment to the water sample before filtration, so that solid phosphorous organic substances and nitrogenous organic substances can dissolve in water after decomposition and avoid being filtered out. Thus, the reliability and objectivity of monitoring and measurement of the water sample pretreatment device are improved. In addition, as part of the solid organic substances is fully dissolved, occurrence of blockage and inconvenience in cleaning are reduced. Therefore, the filtration speed is improved.
Description
Technical Field
The invention relates to the field of water treatment, in particular to a water sample pretreatment device.
Background
With the continuous deterioration of global environment, the environmental pollution is more and more serious, and especially the pollution of water is very serious. Water is a source of life, and the quality problems of drinking water and the pollution of rivers, lakes and seawater are paid attention to various countries at present. In order to implement scientific development and realize sustainable development, and to deal with environmental emergencies, a strict water sample monitoring system is needed. Wherein, the water sample pretreatment is an important link of the water sample monitoring system.
At present, a water sample pretreatment device adopts a filter component to filter solid matters in a water sample, and the filter component can adopt modes such as double-pump filtration, single-pump filtration or vacuum filtration. The adopted suction filtration pump can be a peristaltic pump, a diaphragm pump, a vacuum suction filtration pump or an air compressor and the like, but the device is only used for simply filtering the water sample, and when the total nitrogen and total phosphorus concentration in the water sample are to be measured, a part of organic matters containing phosphorus, nitrogen and the like exist in a solid mode, and are easily filtered when the traditional method is used for filtering. This results in inaccurate and not objective measurement results. The original water sample pretreatment device has the advantages of long filtering time, easy blockage, inconvenient cleaning, large volume, large power consumption and inconvenient carrying.
Disclosure of Invention
Aiming at the problem of inaccurate measurement in the prior art, the invention provides a water sample pretreatment device.
Therefore, the invention provides a water sample pretreatment device, which comprises a water inlet, a filtering part and a water outlet, and also comprises: the heating component is arranged between the water inlet and the filtering component and is used for heating the water sample to a preset temperature; and the ultraviolet digestion component is arranged between the water inlet and the filtering component and is used for performing ultraviolet digestion on the water sample.
Further, a control module is included to control the heating temperature of the heating member and the ultraviolet digestion time of the ultraviolet digestion member.
Further, the ultraviolet digestion member includes: the digestion pool is used for containing a water sample; and the ultraviolet mercury lamp is arranged around the digestion tank or in the digestion tank.
Further, the heating component comprises a heating resistor which is arranged in the digestion tank or arranged at the bottom or the periphery of the digestion tank.
Further, still include: the thermistor is arranged in the digestion tank and senses the temperature T of the water sample; a control panel for setting a preset heating temperature T0And preset UV-eliminationTime of solution; the control module is connected with the thermistor and used for receiving the sensed water sample temperature T, and when the T is less than the T0Executing a heating instruction on the heating resistor, and when T is more than T0If so, executing a heating stopping instruction on the heating resistor; the control module also controls the ultraviolet digestion time of the ultraviolet digestion through a timer.
Furthermore, the control module can also clean the pipeline through a cleaning key of the control panel.
Further, the filter member includes: the first suction filtration pump is connected with the digestion tank; the switch is connected with the first suction pump; the water sample microporous filter is provided with a filter membrane and is connected with the switch; and the second suction filtration pump is connected with the water sample microporous filter.
Further, the heating resistor is a U-shaped heating resistance wire.
Further, the first and second suction pumps are peristaltic pumps, diaphragm pumps, vacuum suction pumps or air compressors.
Further, the control module is powered by a storage battery or a room.
The water sample pretreatment device provided by the invention has the advantages that:
(1) before filtering, heating and ultraviolet digestion treatment are carried out on the water sample, so that organic matters containing phosphorus, nitrogen and the like existing in a solid form are dissolved in water after being decomposed, the organic matters are prevented from being filtered, and the reliability and objectivity of monitoring and measuring of the water sample pretreatment device are improved;
(2) after part of solid organic matters are fully dissolved, the occurrence of blocking and inconvenience in cleaning are reduced, and the filtering speed is improved;
in addition, the water sample pretreatment device provided by the invention adopts accurate automatic temperature control and time control, so that the pretreatment efficiency is improved, and the water sample pretreatment period is shortened; the whole device is simple in structure, the control module can be powered by a storage battery, and the carrying is convenient.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram illustrating a structure of a dual pump filtration of a water sample pretreatment device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating the structure of a single-pump filter of a water sample pretreatment device according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating the structure of vacuum filtration of a water sample pretreatment device according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating the control relationship of the water sample pretreatment device according to the embodiment of the present invention; and
fig. 5 is a schematic view of a control panel of a water sample pretreatment device according to an embodiment of the present invention.
Detailed Description
The following embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the following embodiments and drawings are only for the understanding of the present invention and are not intended to limit the present invention, which may be embodied in many different forms as defined and covered by the claims.
Fig. 1 is a schematic diagram illustrating a structure of a dual pump filtration of a water sample pretreatment device according to an embodiment of the present invention. As shown in fig. 1, the water sample pretreatment device comprises a water inlet, a filter element and a water outlet, and further comprises: the heating component is arranged between the water inlet and the filtering component and is used for heating the water sample to a preset temperature; and the ultraviolet digestion component is arranged between the water inlet and the filtering component and is used for performing ultraviolet digestion on the water sample.
For example, in the detection of total nitrogen, the detection is carried out in an alkaline medium environment at 120-124 ℃, potassium persulfate oxidant is added, ammonia, ammonium salt, nitrate and most organic nitrogen compounds in a water sample are oxidized into nitrate, and then the total nitrogen is detected by adopting a gas phase molecular absorption spectrometry method in the form of nitrate nitrogen. Therefore, the water sample is required to be heated to a certain temperature, and the ultraviolet light with certain intensity is adopted for irradiation, so that the ultraviolet light with certain intensity can catalyze the conversion of nitrogen-containing organic matters into nitrate radicals, the dissolution of nitrogen-containing fixed objects is promoted, the nitrogen-containing fixed objects are prevented from being filtered, and the reliability and the objectivity of monitoring and measuring of the water sample pretreatment device are improved.
As shown in fig. 1, wherein the filtering means comprises a first suction pump 3 connected to the digestion tank 1; a switch 5 connected to the first suction pump 3; the water sample microporous filter 2 is provided with a filter membrane and is connected with the switch 5; and the second suction filtration pump 4 is connected with the water sample microporous filter 2, and the water sample flows to the water sample collection cup 9 through the water outlet after being filtered. The water sample microporous filter 2 is made of stainless steel, the filtering precision of the filtering membrane can be changed according to requirements, filtering membranes with different apertures can be selected, disposable filtering membranes can also be adopted, the filtering membranes can be conveniently changed only by unscrewing the screw caps of the filter after the filtering is finished, and the first filtering pump 3, the second filtering pump 4 and the water sample microporous filter 2 are fixed on the installation panel.
FIG. 2 is a schematic diagram illustrating the structure of a single-pump filter of a water sample pretreatment device according to an embodiment of the present invention; FIG. 3 is a schematic diagram illustrating the structure of vacuum filtration of a water sample pretreatment device according to an embodiment of the present invention; as shown in fig. 2, the single-pump filter structure is substantially similar to the double-pump filter structure except that only one suction pump 31 is used for filtering. As shown in FIG. 3, the vacuum filtration is performed by placing a suction pump 32 near the open sealed water sampling cup 9, one end of which is placed in the water sampling cup 9, and the other end of which is connected to the atmosphere.
The pumping filtration pump of the double-pump filtration and the single-pump filtration is a peristaltic pump, and can also be a diaphragm pump, a vacuum pumping filtration pump or an air compressor, and the pumping filtration pump of the vacuum filtration is preferably a vacuum pumping filtration pump, but can also be a peristaltic pump, a diaphragm pump or an air compressor. Although the form of construction of the filter element and the type of pump employed may vary depending on the application, it is within the scope of the present invention.
The ultraviolet digestion component comprises a digestion tank 1 used for containing a water sample, the digestion tank 1 is made of glass, the light transmittance is required to be strong, the heat resistance, the ultraviolet irradiation resistance and the corrosion resistance are required, the caliber of a bottle opening of the digestion tank 1 can be adjusted according to requirements, and the bottle opening can also be sealed by a ground glass plug according to requirements; one or more ultraviolet mercury lamps 8 are arranged around the digestion tank 1 and can also be arranged inside the digestion tank 1, so that the ultraviolet digestion rate of the water sample is improved as much as possible. The heating element includes heating resistor 6, places in and digests pond 1, can adopt U type heating resistor silk for heating time shortens, and the power consumption reduces, and heating element 6 also can set up bottom or all around of digesting pond 1. In actual work, 4 ultraviolet mercury lamps 8 can be optionally arranged around the digestion tank 1, and 2U-shaped heating resistance wires 6 are arranged in the digestion tank 1. Because ultraviolet rays are harmful to human bodies, the digestion tank 1 of the glass sample pretreatment device needs to be shielded from light and sealed.
The water sample pretreatment device further comprises a control module for controlling the heating temperature of the heating component and the ultraviolet digestion time of the ultraviolet digestion component, and fig. 4 specifically shows a control relationship schematic diagram of the water sample pretreatment device according to the embodiment of the invention. The thermistor 7 is arranged in the digestion tank 1, so that the temperature can be accurately detected and controlled, and the temperature T of a water sample can be sensed; a control panel 10 for setting a preset heating temperature T0And presetting ultraviolet digestion time; the control module is connected with the thermistor 7 and receives the sensed water sample temperature T, and when T is less than T0Executing a heating instruction to the heating resistor 6, and when T is more than T0Then, a heating stop instruction is executed to the heating resistor 6 to keep the water sample at the preset heating temperature T0(ii) a The control module also controls the ultraviolet digestion time of the ultraviolet digestion component through a timer. The control module can also perform pipeline cleaning through a cleaning button of the control panel 10.
Wherein, the thermistor 7, the heating resistor 6 and the ultraviolet mercury lamp 8 are respectively connected with the control panel 10 through leads to realize the accurate control of the heating temperature and the digestion time. The heating resistor 6 and the thermistor 7 are respectively punched from the side surface of the digestion tank 1 to penetrate through the digestion tank 1, and at the moment, silica gel is sealed to place leakage. The thermistor 7 can be a platinum resistor, the control module adopts a storage battery for power supply, and can also supply power indoors, and the two power supply modes can be switched. The storage battery can continuously work for 4 hours or more after being fully charged, and the device has light weight and small volume, so that the device is convenient to carry and can process emergency in the field for a long time.
Fig. 5 is a schematic view of a control panel of a water sample pretreatment device according to an embodiment of the present invention. In the working process, a water sample is injected into the glass sample pretreatment container digestion pool 1, then the heating temperature and the heating time are preset, as shown in fig. 5, the ultraviolet digestion time minute and the heating temperature centigrade are set through the keys 12 of the control panel 10, the set parameters are displayed on the four-digit nixie tube 11 of the control panel 10, the display positions of the four-digit nixie tube 10 are respectively ten positions of the set time from left to right, the unit position of the set time, the ten positions of the set temperature and the unit position of the set temperature. After the setting is finished, an ENTER key in the key 12 is pressed, at the moment, the ultraviolet mercury lamp 8 and the heating resistor 6 start to work, and at the moment, ten bits of ultraviolet digestion time, one bit of ultraviolet digestion time, ten bits of current detection temperature and one bit of current detection temperature are displayed by the four-bit nixie tube from left to right. Through the control principle of the control module, the water sample is always kept at the set temperature for heating and ultraviolet digestion, and the heating and ultraviolet digestion can be automatically stopped after the preset time. After the heating and digestion are completed, the first and second pumps 3 and 4 are turned on to start the filtration treatment of the water sample. Clear up 1 water outlet back of pond and connect the water inlet of suction filtration pump 3, pass through switch 5 by the delivery port of first suction filtration pump 3 again to the entry of water sample micro-porous filter 2, by the water sample micro-porous filter 2 export to the water inlet of second suction filtration pump 4 again, gather by suction filtration pump 4's delivery port to water sample collection cup 9 at last, obtain the water sample of comparison clear and limpid at last. The water sample obtained after the series of treatments enables organic matters containing phosphorus, nitrogen and the like to be dissolved as much as possible, and the organic matters are filtered after being placed, and impurities are fully filtered, so that the detection result is more scientific and accurate.
The device is convenient for cleaning pipelines, after the filtering process is finished, the switch 5 is closed, then the screw cap of the water sample microporous filter 2 is unscrewed, the filter membrane is taken out, the screw cap is screwed, distilled water is injected into the digestion tank 1 of the glass sample pretreatment container, the switch 5 is opened, after the CLR key is pressed by the control panel 10, the control module provides an opening instruction for the first suction filter pump 3, the first suction filter pump 3 starts to work, the distilled water is injected into the digestion tank 1 ceaselessly to pass through the pipeline below, the cleaning key is pressed again until the cleaning effect is reached, and the cleaning is finished.
Although we only describe the work flow of the dual-pump structure in detail here, the work flow is also suitable for single-pump filtration, and for vacuum filtration, only in the process, a suction pump is not used in the pipeline, but the suction pump 32 is placed at one side of the water sample collection cup 9, and the suction pump is used to continuously pump out the gas in the water sample collection cup 9, so that the pressure in the water sample collection cup 9 is lower than the external pressure, and the water sample is forced to flow downwards.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
(1) before filtering, heating and ultraviolet digestion treatment are carried out on the water sample, so that organic matters containing phosphorus, nitrogen and the like existing in a solid form are dissolved in water after being decomposed, the organic matters are prevented from being filtered, and the reliability and objectivity of monitoring and measuring of the water sample pretreatment device are improved;
(2) after part of solid organic matters are fully dissolved, the filtration is more fully carried out, the occurrence of blocking and the inconvenience of cleaning are reduced, and the filtration speed is improved;
in addition, the water sample pretreatment device provided by the invention adopts accurate automatic temperature control and time control, so that the pretreatment efficiency is improved, and the water sample pretreatment period is shortened; the whole device is simple in structure, the control module can be powered by a storage battery, and the carrying is convenient.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a water sample preprocessing device, includes water inlet, filter element and delivery port, its characterized in that still includes:
the heating component is arranged between the water inlet and the filtering component and is used for heating the water sample to a preset temperature;
the ultraviolet digestion component is arranged between the water inlet and the filtering component and is used for performing ultraviolet digestion on the water sample;
wherein,
the ultraviolet digestion member comprises: the digestion pool (1) is used for containing the water sample; the ultraviolet mercury lamp (8) is arranged around the digestion tank (1) or inside the digestion tank (1);
the heating member includes: the heating resistor (6) is arranged in the digestion tank (1) or arranged at the bottom or the periphery of the digestion tank (1);
the filter member includes:
the first suction filtration pump (3) is connected with the digestion tank (1);
a switch (5) connected to the first suction pump (3);
the water sample microporous filter (2) is provided with a filter membrane and is connected with the switch (5);
and the second pumping and filtering pump (4) is connected with the water sample microporous filter (2).
2. The water sample pretreatment device according to claim 1, further comprising:
and the control module controls the heating temperature of the heating component and the ultraviolet digestion time of the ultraviolet digestion component.
3. The water sample pretreatment device according to claim 2, further comprising:
the thermistor (7) is arranged in the digestion tank (1) and senses the temperature T of the water sample;
a control panel (10) for setting a preset heating temperature T0And presetting ultraviolet digestion time;
the control module is connected with the thermistor (7) and used for receiving the sensed water sample temperature T, and when T is less than T0Executing a heating instruction to the heating resistor (6), when T is more than T0Executing a heating stop instruction to the heating resistor (6) to keep the temperature at the preset heating temperature T0；
The control module controls the ultraviolet digestion time of the ultraviolet digestion component through a timer.
4. The water sample pretreatment device according to claim 3, characterized in that the control module also performs pipeline cleaning through a cleaning button of the control panel (10).
5. The water sample pretreatment device according to claim 1, characterized in that the heating resistor (6) is a U-shaped heating resistance wire.
6. Water sample pretreatment device according to claim 1, characterized in that the first and second suction pumps (3, 4) are peristaltic pumps, diaphragm pumps, vacuum suction pumps or air compressors.
7. The water sample pretreatment device according to claim 2, wherein the control module is powered by a storage battery or a room power supply.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110069993 CN102221497B (en) | 2011-03-22 | 2011-03-22 | Water sample pretreatment device |
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| CN 201110069993 CN102221497B (en) | 2011-03-22 | 2011-03-22 | Water sample pretreatment device |
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| CN102221497B true CN102221497B (en) | 2013-04-17 |
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| CN103398886A (en) * | 2013-08-07 | 2013-11-20 | 苏州扬清芯片科技有限公司 | Online water quality digestion system |
| CN103499469B (en) * | 2013-10-22 | 2015-09-16 | 中国海洋大学 | Water sample automatic reception filtration unit |
| CN104614225B (en) * | 2015-02-07 | 2018-01-09 | 杭州安控环保科技有限公司 | A kind of ultraviolet catalytic electrical heating digestion instrument |
| CN104819890A (en) * | 2015-05-08 | 2015-08-05 | 中国科学院电子学研究所 | Digestion method and digestion apparatus of total phosphorus of water quality |
| CN111912695A (en) * | 2020-07-07 | 2020-11-10 | 苏州艾驰博特检测科技有限公司 | Digestion and filtration combined experimental device |
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| JP2005098992A (en) * | 2003-08-26 | 2005-04-14 | Dkk Toa Corp | Oxidization decomposition cell |
| CN202013300U (en) * | 2011-03-22 | 2011-10-19 | 湖南力合科技发展有限公司 | Water sample pre-processing device |
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| JP3651821B2 (en) * | 1996-11-09 | 2005-05-25 | 株式会社堀場製作所 | Total nitrogen measuring device |
| JP2007248229A (en) * | 2006-03-15 | 2007-09-27 | Fujitsu Ltd | Particle measuring device with exhaust cleaning function |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005098992A (en) * | 2003-08-26 | 2005-04-14 | Dkk Toa Corp | Oxidization decomposition cell |
| CN202013300U (en) * | 2011-03-22 | 2011-10-19 | 湖南力合科技发展有限公司 | Water sample pre-processing device |
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Address after: 7, building 410013, Jin Xin building, hi tech Industrial Development Zone, Changsha, Hunan, Changsha Applicant after: Lihe Technology (Hunan) Co.,Ltd. Address before: 7, building 410013, Jin Xin building, hi tech Industrial Development Zone, Changsha, Hunan, Changsha Applicant before: Hu'nan Lihe Science and Technoogy Development Co., ltd. |
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Inventor after: Zou Xiongwei Inventor after: Cai Zhi Inventor after: Huang Kai Inventor after: Yang Jun Inventor after: Xiong Chunhong Inventor after: Li Shuyun Inventor after: Tong Shehua Inventor after: Wen Liqun Inventor before: Zou Xiongwei Inventor before: Cai Zhi Inventor before: Huang Kai Inventor before: Yang Jun Inventor before: Xiong Chunhong Inventor before: Li Shuyun Inventor before: Tong Shehua Inventor before: Wen Liqun |
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