CN101852784A - Device for simulating polychlorinated biphenyl releasing at sediment-water interface - Google Patents
Device for simulating polychlorinated biphenyl releasing at sediment-water interface Download PDFInfo
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- CN101852784A CN101852784A CN 201010182505 CN201010182505A CN101852784A CN 101852784 A CN101852784 A CN 101852784A CN 201010182505 CN201010182505 CN 201010182505 CN 201010182505 A CN201010182505 A CN 201010182505A CN 101852784 A CN101852784 A CN 101852784A
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- Prior art keywords
- glass
- water
- pipe
- sediment
- polychlorinated biphenyl
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 106
- 150000003071 polychlorinated biphenyls Chemical group 0.000 title claims abstract description 48
- 239000011521 glass Substances 0.000 claims abstract description 136
- 239000011347 resin Substances 0.000 claims description 15
- 229920005989 resin Polymers 0.000 claims description 15
- 230000000630 rising effect Effects 0.000 claims description 9
- 239000005373 porous glass Substances 0.000 abstract 1
- 239000013049 sediment Substances 0.000 description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 238000004088 simulation Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000003811 acetone extraction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000004817 gas chromatography Methods 0.000 description 2
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Images
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a device for simulating polychlorinated biphenyl releasing at a sediment-water interface, which is characterized in that: a glass water pipe and a water collection glass funnel are arranged in a sealed glass vessel and are close to the two opposite side walls of the glass vessel respectively; a porous glass bulb is hung in the sealed glass vessel; a glass pipe, a constant flow pump and a connecting pipe are arranged outside the glass vessel; one end of the glass pipe and the tail end of the water collection glass funnel are fixedly arranged together and the glass pipe is communicated with the water collection glass funnel; the other end of the glass pipe is communicated with one end of the constant flow pump through the connecting pipe; the other end of the constant flow pump is communicated with the glass water pipe through the connecting pipe; and the glass water pipe is provided with a water outlet. The device has a simple and rational structure and can measure the PCBs content of the sediment-water interface in a slightly polluted water body.
Description
Technical field
The present invention relates to the analogue means of the water body deposit-water interface process research in the field of environment protection, relate in particular to the analogue means of micropollutant water sediment-water termination polychlorinated biphenyl releasing research.
Background technology
Polychlorinated biphenyl (PCBs) is extremely strong, the very harmful organic contaminant of a kind of toxicity.It is one of persistence organic pollutant (POPs) of 12 kinds of preferential controls in the world, and it is difficult degradation in environment.The PCBs that enters in the water body mainly is present in the sediment, but it should be noted that, enter PCBs in the sediment and be not and piled up simply and bury, but exchange through biomass geochemistry with the water body complexity, process such as suspension again, a part of PCBs is when condition is suitable in the sediment, can discharge to sedimental overlying water, thereby bringing into play the effect in source to a certain extent and affecting the water quality of water body, Achman etc. studies show that, the flux of suspension again of U.S. Hudson river mouth PCBs is the river, the 2-100 of sewage draining exit and atmospheric sedimentation flux doubly.
The content of the PCBs of sediment-water termination lower (in the ppt level) in the micropollutant water, and existing " being applied to the indoor simulation device of lake sediment-water interface process research ", the process of single simulation lake sediment one water termination, and device is after operation a period of time, for the detection difficult of the PCBs of the horizontal content of ppt in the sedimental overlying water, can not satisfy the research requirement that micropollutant water sediment-water termination PCBs discharges; People such as Tricia A.Trimble are container with the glass centrifuge tube, add the Tenax-TA resin in the container, and the shortcoming of this technology is not simulate the actual state of sediment-water termination.To sum up, still lack the device that simulation sediment-water termination polychlorinated biphenyl discharges at present.
Summary of the invention
The purpose of this invention is to provide a kind of device that sediment one water termination polychlorinated biphenyl discharges of simulating.This device can be simulated sediment-water termination environment well, is applied to the research that micropollutant water sediment-water termination polychlorinated biphenyl discharges.
For achieving the above object, the technical solution adopted in the present invention is: be built-in with the glass water pipe and the glass funnel that catchments at airtight glass body, the glass water pipe and glass funnel two the relative sidewalls of close glass body respectively that catchment also are hung with the fritted glass alveolar sphere in airtight glass body; External glass tube, constant flow pump and the connecting pipe of being provided with of vierics, one end of glass tube is fixedly installed togather with the end of the glass funnel that catchments and glass tube is communicated with the glass funnel that catchments, the other end of glass tube is communicated with an end of constant flow pump by connecting pipe, the other end of constant flow pump is by connecting pipe and glass cross current, and described glass water pipe is provided with water delivering orifice.
Further, glass water pipe of the present invention is a three-way pipe, and this three-way pipe is made up of water service pipe and rising pipe, and the compartment of terrain is distributed with water delivering orifice on the described rising pipe.
Further, rising pipe of the present invention is a flat flow water distribution glass tube.
Further, fritted glass alveolar sphere of the present invention is positioned at the geometric center place of described glass body.
Further, in glass tube of the present invention and the fritted glass alveolar sphere Tenax-TA resin is housed.
The invention has the beneficial effects as follows: the sedimental overlying water in apparatus of the present invention glass body flows out from glass body right side by the glass funnel that catchments, go into glass body left side through glass tube, connecting pipe, constant flow pump from glass water pipe horizontal flow, horizontal current produce hydraulic disturbance makes surface deposit float, well reduzate-water termination actual state; PCBs in glass tube and the fritted glass alveolar sphere in the sedimental overlying water of Tenax-TA resin adsorption, measure the PCBs that adsorbs in the Tenax-TA resin by normal hexane, acetone extraction, adsorbance is the burst size of sediment-water termination PCBs, thereby realizes the assay to the PCBs of sediment-water termination in the micropollutant water; And apparatus of the present invention have simple and reasonable for structurely, safe and reliable, simple to operate characteristics such as understands.
Description of drawings
Fig. 1 is the structural representation of apparatus of the present invention.
Fig. 2 is the structural representation of a kind of embodiment of glass water pipe.
Fig. 3 is the annexation synoptic diagram of glass funnel and glass tube of catchmenting.
Among the figure: 1-glass body; 2-glass water pipe; The 3-glass funnel that catchments; The 4-glass tube; 5-fritted glass alveolar sphere; The 6-constant flow pump; The 7-connecting pipe; The 21-water service pipe; The 22-rising pipe; The 23-water delivering orifice.
Embodiment
In apparatus of the present invention as shown in Figure 1, be built-in with the glass water pipe 2 and the glass funnel 3 that catchments at airtight glass body 1.Glass water pipe 2 is provided with water delivering orifice, so that current are entered in the glass body 1 by glass water pipe 2.The glass water pipe 2 and glass funnel 3 two the relative sidewalls of close glass body 1 respectively that catchment, as shown in Figure 1, glass water pipe 2 is near the left side wall of glass body 1, the right side wall of glass funnel 3 near glass body 1 catchments, make the water that flows out by glass water pipe 2 flow through from left to right and enter the glass funnel 3 that catchments behind the glass body 1, current in the glass body 1 produce the hydraulic disturbance effect thus, make the surface deposit come-up in the glass body 1, thus simulation sediment-water termination actual state.The hydraulic disturbance scope increases in the glass body 1 in order to make, and the simulated environment that makes apparatus of the present invention preferably makes glass water pipe 2 be close to glass body 1 left side near real river deposit-water termination environment, and the glass funnel 3 that catchments is close to glass body 1 right side.Glass water pipe 2 can adopt a hollow glass straight tube, also can adopt three-way pipe as shown in Figure 2, this three-way pipe is made up of water service pipe 21 and rising pipe 22, the compartment of terrain is distributed with several apertures with as water delivering orifice 23 on the rising pipe 22, water delivering orifice 23 water outlet scopes more at most are more big, correspondingly, the hydraulic disturbance effect is good more in the glass body 1.If rising pipe 22 adopts flat flow water distribution glass tubes, then can produce the flat flow water outlet, thereby reach the disturbance effect of current in the better simulation micropollutant water.In airtight glass body 1, be hung with fritted glass alveolar sphere 5, but fritted glass alveolar sphere 5 splendid attire Tenax-TA resins are to be used for adsorbing the PCBs of sedimental overlying water.If fritted glass alveolar sphere 5 is positioned at the geometric center of glass body 1, then the Tenax-TA resin in the fritted glass alveolar sphere 5 has better adsorption effect to the PCBs in the sedimental overlying water.
Tenax-TA resin in fritted glass alveolar sphere 5 and the glass tube 4 can be changed before absorption is saturated, replenish, thereby realizes the PCBs in the sedimental overlying water in the glass body 1 is adsorbed fully.
Use apparatus of the present invention to can be used for studying micropollutant water sediment-water termination PCBs release rule and investigating the control technology that micropollutant water sediment PCBs discharges.Below illustrate:
1. micropollutant water sediment one water termination PCBs release rule research.
The bright sample of sediment is tiled in the glass body 1, keeps 3cm thickness, get this sedimental overlying water, slowly fill it up with glass body 1,1 sealing of glass body is beneficial to form sediment-water termination anaerobic environment behind the logical nitrogen 6h.Open constant flow pump 6, overlying water flows out from glass body 1 through the glass funnel 3 that catchments in the glass body 1, reenters glass body 1 by glass water pipe 2 again by glass tube 4, connecting pipe 7, constant flow pump 6, constantly circulation.The PCBs that sediment is discharged in the overlying water is constantly adsorbed by Tenax-TA resins in the glass tube 4, hangs on Tenax-TA resins in the fritted glass alveolar sphere 5 in the glass body 1 simultaneously and also constantly adsorbs PCBs in the overlying water.After sediment discharges certain hour, Tenax-TA resin in glass tube 4 and the hole glass alveolar sphere 5 is taken out, the Tenax-TA resin that takes out is through normal hexane, acetone extraction, gas chromatography (GC) is measured the adsorbance of the PCBs of Tenax-TA resin, and the adsorbance of the PCBs of Tenax-TA resin is the burst size of sediment in this time period-water termination PCBs.The release rule that can learn the micro-polluted water area deposition thing-water termination PCBs that is simulated by burst size and the relation of release time of PCBs.
2. the control technology research of micropollutant water sediment PCBs release.
Activated charcoal with interpolation load Zero-valent Iron in sediment is an example.Detect and determine sedimental PCBs burst size,, can check the control effect of activated charcoal the release of sediment PCBs by both PCBs burst sizes with the sedimental PCBs burst size contrast of not adding activated charcoal.If the sedimental PCBs burst size of adding activated charcoal illustrates then that less than the sedimental PCBs burst size of not adding activated charcoal activated charcoal is effective to the control of the release of sediment PCBs.
Claims (5)
1. simulate the device that sediment-water termination polychlorinated biphenyl discharges for one kind, it is characterized in that: be built-in with glass water pipe (2) and the glass funnel that catchments (3) at airtight glass body (1), glass water pipe (2) and the glass funnel that catchments (3) near two relative sidewalls of glass body (1), also are hung with fritted glass alveolar sphere (5) respectively in airtight glass body (1); Outer glass tube (4), constant flow pump (6) and the connecting pipe (7) of being provided with of glass body (1), one end of glass tube (4) is fixedly installed togather with the end of the glass funnel that catchments (3) and glass tube (4) is communicated with the glass funnel that catchments (3), the other end of glass tube (4) is communicated with an end of constant flow pump (6) by connecting pipe (7), the other end of constant flow pump (6) is communicated with glass water pipe (2) by connecting pipe (7), and described glass water pipe (2) is provided with water delivering orifice.
2. a kind of device that sediment-water termination polychlorinated biphenyl discharges of simulating according to claim 1, it is characterized in that: described glass water pipe (2) is a three-way pipe, this three-way pipe is made up of water service pipe (21) and rising pipe (22), and described rising pipe (22) is gone up the compartment of terrain and is distributed with water delivering orifice (23).
3. a kind of device that sediment-water termination polychlorinated biphenyl discharges of simulating according to claim 2, it is characterized in that: described rising pipe (22) is a flat flow water distribution glass tube.
4. a kind of device that sediment-water termination polychlorinated biphenyl discharges of simulating according to claim 1 and 2, it is characterized in that: described fritted glass alveolar sphere (5) is positioned at the geometric center place of described glass body (1).
5. a kind of device that sediment-water termination polychlorinated biphenyl discharges of simulating according to claim 1 and 2 is characterized in that: in described glass tube (4) and the fritted glass alveolar sphere (5) the Tenax-TA resin is housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010182505 CN101852784A (en) | 2010-05-25 | 2010-05-25 | Device for simulating polychlorinated biphenyl releasing at sediment-water interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010182505 CN101852784A (en) | 2010-05-25 | 2010-05-25 | Device for simulating polychlorinated biphenyl releasing at sediment-water interface |
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| Publication Number | Publication Date |
|---|---|
| CN101852784A true CN101852784A (en) | 2010-10-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010182505 Pending CN101852784A (en) | 2010-05-25 | 2010-05-25 | Device for simulating polychlorinated biphenyl releasing at sediment-water interface |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001009209A (en) * | 1999-06-24 | 2001-01-16 | Torao Inoue | Equipment for collecting/transferring or collecting/ removing precipitate in covered water conduit |
| CN101172668A (en) * | 2007-10-19 | 2008-05-07 | 中国科学院南京地理与湖泊研究所 | Indoor simulated system applied in lake sediment-water interface process research |
| CN201207047Y (en) * | 2007-11-29 | 2009-03-11 | 中国环境科学研究院 | Test device for static absorption ability of amorphous floc to water body pollutant |
| CN201716300U (en) * | 2010-05-25 | 2011-01-19 | 浙江大学 | Sediment-water interface polychlorinated biphenyl releasing simulator |
-
2010
- 2010-05-25 CN CN 201010182505 patent/CN101852784A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001009209A (en) * | 1999-06-24 | 2001-01-16 | Torao Inoue | Equipment for collecting/transferring or collecting/ removing precipitate in covered water conduit |
| CN101172668A (en) * | 2007-10-19 | 2008-05-07 | 中国科学院南京地理与湖泊研究所 | Indoor simulated system applied in lake sediment-water interface process research |
| CN201207047Y (en) * | 2007-11-29 | 2009-03-11 | 中国环境科学研究院 | Test device for static absorption ability of amorphous floc to water body pollutant |
| CN201716300U (en) * | 2010-05-25 | 2011-01-19 | 浙江大学 | Sediment-water interface polychlorinated biphenyl releasing simulator |
Non-Patent Citations (1)
| Title |
|---|
| 《Chemosphere》 20081231 Tricia A. Trimble， et al Bioavailability of PCBs from field-collected sediments: Application of Tenax extraction and matrix-SPME techniques 第337-344页 1－5 第71卷, 2 * |
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Application publication date: 20101006 |