CN203178108U - Enriching device for semi-volatile organic compounds in underground water - Google Patents

Enriching device for semi-volatile organic compounds in underground water Download PDF

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Publication number
CN203178108U
CN203178108U CN2013202060629U CN201320206062U CN203178108U CN 203178108 U CN203178108 U CN 203178108U CN 2013202060629 U CN2013202060629 U CN 2013202060629U CN 201320206062 U CN201320206062 U CN 201320206062U CN 203178108 U CN203178108 U CN 203178108U
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CN
China
Prior art keywords
volatile organic
semi
water
hydrophone
underground water
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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
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CN2013202060629U
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Chinese (zh)
Inventor
刘俊建
刘景涛
朱亮
陈玺
吕晓立
崔海炜
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Institute of Hydrogeology and Environmental Geology CAGS
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Institute of Hydrogeology and Environmental Geology CAGS
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Priority to CN2013202060629U priority Critical patent/CN203178108U/en
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Publication of CN203178108U publication Critical patent/CN203178108U/en
Expired - Fee Related legal-status Critical Current
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Abstract

The utility model discloses an enriching device for semi-volatile organic compounds in underground water. The device comprises a cylinder provided with an overflow port and an emptying port, wherein the upper end of the cylinder is provided with a water sample inlet which is provided with a water passing device; connecting rods are uniformly distributed on the cylinder and are threaded with a disc body provided with a water inlet tube which passes through the disc body and is communicated with a sealing ring below the disc body; the upper end of the water passing device is compactly matched with the sealing ring; the lower outlet of the water passing device is communicated with a return tube fixedly connected to the cylinder; and the lower outlet of the return tube is located at the bottom of the cylinder. The device disclosed by the utility model can enrich semi-volatile organic compounds in various hydrogeological conditions in field geological investigation in positive and negative pressures, so that the sampling cost is lowered and the work efficiency is improved. The device is easy to store and transport and free from secondary pollution, the loss of substances to be detected is prevented in the operating flow, and the recovery rate of the semi-volatile organic compounds is improved, and taking marked samples in underground water detection as an example, the recovery rate can be increased from 70% in the prior art to 90%.

Description

A kind of underground water semi-volatile organic matter enriching apparatus
Technical field
The utility model relates to the open-air enriching apparatus of underground water semi-volatile organic matter.
Background technology
Because the unreasonable disposal of " three wastes ", the unreasonable abuse of chemicals such as agricultural chemicals, chemical fertilizer, it is more and more serious to cause in the underground water semi-volatile organic matter to pollute, human survival and health are constituted a serious threat, thereby understand in time that the semi-volatile organic matter pollution situation has become instant problem in the underground water.Carry out at present that the research and appraisal for semi-volatile organic matter are wherein important ingredients in the nationwide groundwater contamination research and appraisal work, semi-volatile organic matter belongs to contaminant trace species, content in underground water is generally μ g/l or even ng/l rank, must adopt high sensitivity and specific analytical approach could detect its content in underground water, and the enrichment of semi-volatile organic matter is as the preprocessing process that detects, and is significant to follow-up extraction, testing.Current comparatively ripe method is open-air sampling, be transported to the laboratory at a distance, carry out pre-treatment and gas chromatography-mass spectrum monitoring analysis then, idiographic flow is: use 1 liter of Brown Glass Brown glass bottles and jars only sampling of handling through high temperature purification in the open air, must adopt sampler adjusting pressure to reach 0.2~0.25MPa in case the underground water degassing, rising pipe is slowly carried until water sample at the following 3cm of liquid level and being overflowed during sampling, cover bottle cap more rapidly and guarantee do not have air in the bottle, preserve at insulation can low temperature sampling back, long-distancely then carries out monitoring analysis after transporting the laboratory to.
Find that by the long-term work practice above-mentioned flow process has following problem: 1. because sampling bottle is that vial is frangible, in preservation, transportation, must resample as if after fragmentation occurring; 2. since from project district field condition to often far away the laboratory, sampling will keep low temperature, will prevent the sampling bottle fragmentation simultaneously, thereby causes low temperature storage and transport cost height; 3. for guaranteeing the sampling pressure requirement, should regulate pressure cost great effort and time, very easily damage water pump again, feasible sampling flow process complexity; 4. operation steps requires loaded down with trivial details, easily cause the analytical test result than mistake, the glass sampling bottle must be resampled if enter air, cause groundwater resource, sampling time and waste of electric energy, this problem in arid, that semiarid northwest lacks the area is particularly outstanding; 5. vial on-site sampling, Solid-Phase Extraction is carried out in long-distance transportation to the laboratory then, and the problem of this sampling flowsheet maximum is to cause loss and the phreatic secondary pollution of object in the underground water, has a strong impact on the recovery and test result.
The utility model content
At the deficiency of semi-volatile organic matter Sampling techniques in the existing underground water, the utility model provides semi-volatile organic matter enriching apparatus in a kind of underground water, to be implemented under the groundwater contamination investigation field condition enrichment to semi-volatile organic matter in the underground water.
For realizing the utility model purpose, this underground water semi-volatile organic matter enriching apparatus is characterized in that it comprises that one is provided with the cylindrical shell of overflow vent and evacuation port, the cylindrical shell upper end is provided with the water sample entrance, the water sample inlet end was equipped with hydrophone, be evenly equipped with connecting link on the cylindrical shell, install a disk body that is provided with water inlet pipe on the connecting link, one arm is set on the described water inlet pipe, sealing ring under water inlet pipe passes disk body and is located at disk body communicates, cross the lower end outlet of hydrophone and communicate with refluence pipe on being fixed on cylindrical shell, the lower end of refluence pipe exports the bottom that is positioned at cylindrical shell.
The technical progress that the utility model is obtained:
Because semi-volatile organic matter enriching apparatus in the underground water of employing the utility model structure, can realize under the Field Geology Investigations condition enrichment to semi-volatile organic matter in the underground water, eliminated existing use breakaway glass sampling bottle flow process, strengthened the operability of sampling process, the column of utilizing field condition to have adsorption film is crossed the tubulose of hydrophone or filling sorbing material and is crossed the sample mode that hydrophone has replaced existing glass sample bottle, greatly reduce the sampling cost, improved work efficiency, be implemented in compatible multiple underground water well type in the field condition sampling, spring and various sampling pump, both can be connected with deep well submerged pump, also can unite use with the shallow well centrifugal pump, satisfying under the above-mentioned positive pressure, can also be connected with vacuum pump, the sampling of realization negative pressure, be used for gathering surface water, spring, underground water overflows the sampling under the hydrogeological conditions such as band, so the utility model just, the characteristic of negative pressure sampling has satisfied the collection service condition under the various field conditions substantially.The utility model all adopts 316 type stainless steels to make, and easily preserves, and is easy to carry, anti-organic corrosion, and no organic contamination deposits yields has avoided the external source of sampling process to pollute, and is convenient to the geologic examination use under the condition in the open air.The utility model can directly be connected with sampling pump or sampler, and the underground water sample can directly contact with the present invention, has reduced the artificial link that participates in such as vial sampling, sealing, has avoided artificial contact factor, does not produce secondary pollution.Reduced the vial sampling, the glass sampling jar transports, opens flow processs such as glass sampling jar Solid-Phase Extraction at a distance, avoided the loss of semi-volatile organic matter in the aforesaid operations flow process, improved the recovery of semi-volatile organic matter, to add the standard specimen phenanthrene in the underground water be example to detect, the utility model recovery can rise to 90% by 70% of prior art, the utility model be particularly useful for the groundwater contamination research and appraisal and repair in the research in the open air fast, accurate enrichment underground water semi-volatile organic matter.
Description of drawings
Fig. 1 is the utility model embodiment 1 structural representation.
Fig. 2 implements 2 structural representations for the utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is elaborated.
Embodiment 1: as shown in Figure 1, the semi-volatile organic matter enriching apparatus comprises the cylindrical shell 2 that is provided with overflow vent 3 and evacuation port 1 in this underground water, the upper end of cylindrical shell 2 is provided with the water sample entrance, the water sample inlet end is equipped with the tubulose of loading sorbing material 15 and crosses hydrophone 14, on the outer wall of cylindrical shell 2, evenly be welded with connecting link 5, install the disk body 11 that is provided with water inlet pipe 8 on the connecting link 5, one arm 9 is set on the water inlet pipe 8, sealing ring 12 under water inlet pipe 8 passes disk body 11 and is located at disk body 11 communicates, sealing gasket 13 is housed in the sealing ring 12, last end entrance and 13 of sealing gaskets that tubulose is crossed hydrophone 14 closely cooperate, tubulose is crossed inlet tube 4 socket connections of end entrance projection on the lower end outlet of hydrophone 14 and the pipe 16 that flows backwards, inlet tube 4 communicates with refluence pipe 16 on being fixed on cylindrical shell 2, and the lower end outlet of the pipe 16 that flows backwards is positioned at the bottom of cylindrical shell 2.
The enriching apparatus of present embodiment structure in use, be under the submersible pump condition at water plug namely, when external sampling pump discharge hour, the tubulose of assembling sorbing material 15 is crossed hydrophone 14 lower ends to be inserted in the inlet tube 4, tubulose is crossed the nut that screws connecting link 5 upper ends after the upper end of hydrophone 14 and sealing ring 12 align, make tubulose cross 13 of sealing gaskets in hydrophone 14 upper ends and the sealing ring 12 back that closely cooperates and form sealing state, open the valve at overflow vent 3 places then successively, close the valve at evacuation port 1 place, valve 10 on Open valve 7 and the arm pipeline 9 then, valve-off 6 backs start water pump again, when adjusting flow valve-off 10 successively after steadily, Open valve 6, make water sample enter the tubulose that links to each other with inlet tube 4 through water inlet pipe 8 and cross hydrophone 14, enrichment on the sorbing material 15 of semi-volatile organic matter in the water sample in tubulose is crossed hydrophone 14, water sample in flowing into cylindrical shell 2 is during through overflow vent 3 overflows, close the valve at overflow vent 3 places immediately, and open evacuation port 1 emptying water sample, take out the tubulose that is enriched with semi-volatile organic matter then and cross hydrophone 14.
Embodiment 2: as shown in Figure 2, the present embodiment difference from Example 1 was the column structure that adsorption film 15a is housed in hydrophone 14a is, use the enriching apparatus of present embodiment structure when the sampling pump flow is big, its enrichment process for the semi-volatile organic matter in the underground water is identical with embodiment 1.
When water plug is centrifugal pump, semi-volatile organic matter enriching apparatus in the underground water of installation the utility model embodiment 1 or embodiment 2 structures before water sample enters centrifugal pump, at first introduce intake pipe from well head and tap into water pipe 8 this moment, overflow vent 3 connects the centrifugal pump water inlet, finishes semi-volatile organic matter enrichment work in the underground water by the operation steps of embodiment 1 or embodiment 2 then.
When underground water is spring, when overflowing band or surface water, connects vacuum pump at overflow vent 3, finish semi-volatile organic matter enrichment work in the underground water by the operation steps of above-described embodiment 1 or embodiment 2 then.

Claims (4)

1. underground water semi-volatile organic matter enriching apparatus, it is characterized in that it comprises that one is provided with the cylindrical shell of overflow vent and evacuation port, the cylindrical shell upper end is provided with the water sample entrance, the water sample inlet end was equipped with hydrophone, be evenly equipped with connecting link on the cylindrical shell, install a disk body that is provided with water inlet pipe on the connecting link, one arm is set on the described water inlet pipe, sealing ring under water inlet pipe passes disk body and is located at disk body communicates, cross the lower end outlet of hydrophone and communicate with refluence pipe on being fixed on cylindrical shell, the lower end of refluence pipe exports the bottom that is positioned at cylindrical shell.
2. underground water semi-volatile organic matter enriching apparatus according to claim 1 is characterized in that described to cross hydrophone be the tubular structure that is equipped with sorbing material, the inlet tube socket connection that the lower end outlet of crossing hydrophone and the pipe that flows backwards are gone up the end entrance projection.
3. underground water semi-volatile organic matter enriching apparatus according to claim 1 is characterized in that described hydrophone excessively is column structure, and described the mistake in the hydrophone is equiped with adsorption film.
4. according to claim 1,2 or 3 described underground water semi-volatile organic matter enriching apparatus, it is characterized in that installing sealing gasket in the described sealing ring, closely cooperate between the last end entrance of hydrophone and sealing gasket excessively.
CN2013202060629U 2013-04-19 2013-04-19 Enriching device for semi-volatile organic compounds in underground water Expired - Fee Related CN203178108U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013202060629U CN203178108U (en) 2013-04-19 2013-04-19 Enriching device for semi-volatile organic compounds in underground water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013202060629U CN203178108U (en) 2013-04-19 2013-04-19 Enriching device for semi-volatile organic compounds in underground water

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CN203178108U true CN203178108U (en) 2013-09-04

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103234778A (en) * 2013-04-19 2013-08-07 中国地质科学院水文地质环境地质研究所 Device for enriching semi-volatile organic compounds in underground water
CN103743595A (en) * 2014-01-28 2014-04-23 中国地质科学院水文地质环境地质研究所 Tube orifice diameter variable spliced sampling instrument

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103234778A (en) * 2013-04-19 2013-08-07 中国地质科学院水文地质环境地质研究所 Device for enriching semi-volatile organic compounds in underground water
CN103234778B (en) * 2013-04-19 2014-12-03 中国地质科学院水文地质环境地质研究所 Device for enriching semi-volatile organic compounds in underground water
CN103743595A (en) * 2014-01-28 2014-04-23 中国地质科学院水文地质环境地质研究所 Tube orifice diameter variable spliced sampling instrument
CN103743595B (en) * 2014-01-28 2015-12-02 中国地质科学院水文地质环境地质研究所 Mouth of pipe reducing plug-in type sampling instrument

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C17 Cessation of patent right
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Granted publication date: 20130904

Termination date: 20140419