CN105628449B - A kind of polyurethane rainfall runoff Passive sampler - Google Patents
A kind of polyurethane rainfall runoff Passive sampler Download PDFInfo
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- CN105628449B CN105628449B CN201610079342.6A CN201610079342A CN105628449B CN 105628449 B CN105628449 B CN 105628449B CN 201610079342 A CN201610079342 A CN 201610079342A CN 105628449 B CN105628449 B CN 105628449B
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- runoff
- polyurethane
- pvc
- passive
- rainfall runoff
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/20—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials
Abstract
The invention discloses a kind of polyurethane rainfall runoff Passive samplers, it is characterized by: using the PVC casing being vertically arranged as shell, a PVC grid is each provided at the upper/lower terminal mouth of PVC casing, it is filled with column flexible polyurethane foam in the inside of PVC casing, is each provided with pair of lamina polyester monofilament net in the upper/lower terminal of flexible polyurethane foam.Polyurethane rainfall runoff Passive sampler of the invention is suitable for the operational monitoring of the passive sampling and runoff treatment structures (such as Rain Garden) of rainfall runoff；Adsorbent material using polyurethane as rainfall runoff Passive sampler, it is fast to the adsorption rate of Semi-volatile organism in rainwater, adsorption rate is stable, adsorption capacity is big, there are the acquisition capacity of several months or even several years to the Semi-volatile organism of runoff concentration level, the passive sampling that can be used for single rainfall or long-term rain runoff is able to reflect the accumulated time feature of Runoff contaminants.
Description
Technical field
The present invention relates to a kind of monitoring devices of rainfall runoff Semi-volatile organism, belong to environmental contaminants monitoring technology neck
Domain.
Background technique
As point source pollutant is gradually effectively controlled, oneself warp of rainfall runoff becomes one of receiving water pollution mainly
Reason, rainwater pollution control become a research hotspot of Urban Water Pollution Control.At present about rainwater runoff pollution research
One difficult point is micro in the sampling of rainwater, especially rainwater/contaminant trace species, such as polycyclic aromatic hydrocarbon, dichlorobenzene etc. half
Volatile organic compounds, big to environmental hazard, the content in rainwater is low (μ g/L or ng/L), and conventional method sampling generally requires a large amount of
It acquires rainwater and carries out laboratory testing.The sampling of rainwater at present mainly passes through manually or automatically sampler, the former needs to disappear
A large amount of manpowers are consumed, especially manually acquiring rain sample in some extreme weathers has certain danger, and automatic type of rain sampler sampling is spent
Greatly.Therefore exploiting economy, rainfall runoff sampling technique efficiently, safe are significant to Urban Water Environment contamination control.
Passive sampling technology, which refers to, acquires object by mechanism such as retention, absorption, diffusions, does not need power consumption, can
With the time cumulation of reaction contaminant in the environment, economical and effective is widely used at present in atmosphere, underground water, river, ocean
In equal environmental contaminants sampling.But the unequal feature of randomness and spatial and temporal distributions due to rainfall runoff, passive sampling technology mesh
It is preceding also rarely have rainfall runoff sampling in apply.
Polyurethane foam is cheap, high to Semi-volatile organism adsorption efficiency, answers extensively in the passive sampling of atmosphere
With can effectively acquire half volatile organic compounds in atmosphere, but existing passive air sampling device is according to atmosphere
Hydrodynamics characteristic design is not suitable for rainfall runoff feature (as intermittent, spatial and temporal distributions are unequal).Polyurethane is not yet at present
It is used in the passive sampling of rainwater, does not also have systematic rainwater passive sampling technology (including theory and practice invention) to grind
Study carefully.
Summary of the invention
For the deficiency that existing rainwater manually or automatically samples, the object of the present invention is to provide one kind can be with economical and effective
Semi-volatile organism pollutes, is capable of long term monitoring rainwater treatment structures pollutant removal again in ground monitoring rainfall runoff
Polyurethane rainfall runoff Passive sampler.
The present invention solves technical problem, adopts the following technical scheme that
Polyurethane rainfall runoff Passive sampler of the present invention, design feature are: being outer with the PVC casing being vertically arranged
Shell is each provided with a PVC grid at the upper/lower terminal mouth of the PVC casing, is filled with column in the inside of the PVC casing
Shape flexible polyurethane foam is each provided with pair of lamina polyester monofilament net in the upper/lower terminal of the flexible polyurethane foam.
Polyurethane rainfall runoff Passive sampler of the present invention, design feature are lain also in: being located at the PVC sleeve upper end mouth
Flowmeter is provided with below the PVC grid at place.
The double-layer polyester monofilament net at PVC grid and flexible polyurethane foam upper end at the PVC sleeve upper end mouth
Between be provided with reserved water level (being specifically located on flowmeter).
Available energy reference compound is added in the flexible polyurethane foam.
The height of the flexible polyurethane foam is 7-9cm.
The present invention is to use column flexible polyurethane foam for adsorbent material, to the Semi-volatile organism quilt in rainfall runoff
Dynamic sampling, without power consumption.By the adsorption kinetic data, determine that flexible polyurethane foam has half volatilization of rainwater concentration
The adsorption rate and adsorption capacity of machine object.By the way that suitable polyurethane pillar height degree is arranged, Passive sampler is in rainfall runoff
Semi-volatile organism has higher adsorption rate.Rainfall runoff is vertical-flow or diagonal flow type passes through Passive sampler, soft polyurethane ester
Steel foams Semi-volatile organism, the Semi-volatile organism in desorption polyurethane can measure the accumulation of pollutant in rainfall runoff
Amount.A certain amount of efficiency reference compound (PRCs) is marked on polyurethane, and rate correction polyurethane rain is escaped according to PRCs
The sampling rate of water Passive sampler monitors rainwater runoff pollution object concentration in conjunction with the runoff rate that flow measurement obtains.
When Passive sampler of the invention is used for rainwater treatment structures, it is arranged using the bushing type of self-mountable & dismountuble, side
Just it picks and places.It is used cooperatively using two Passive samplers, one is used in the place that becomes a mandarin, and one is used at water outlet, to monitor at rainwater
Manage the operational effect of structures.The double-layer polyester at PVC grid and flexible polyurethane foam upper end at PVC sleeve upper end mouth
Reserved water level design between monofilament net, reserves that height of water level is consistent with monitoring point water level, and can make that monitoring becomes a mandarin passive adopts
Sample device is similar to the hydraulic characteristic of rainwater treatment structures, similar to the inflow-rate of water turbine of Passive sampler of monitoring water outlet.
PVC grid is arranged in the present invention at PVC sleeve upper end mouth, can intercept biggish suspended matter in rainfall runoff；It is soft
Property polyurethane foam upper end at double-layer polyester monofilament net is set, further intercept small suspended matter in rainfall runoff, prevent soft
Polyurethane blocking；Double-layer polyester monofilament net is set at flexible polyurethane foam lower end, in addition to intercepting the suspended matter from bottom end, also
Play supporting role；PVC grid is set at PVC lower end mouth and plays support, overcurrent.
Compared with the prior art, the beneficial effects of the present invention are embodied in:
(1) polyurethane rainfall runoff Passive sampler of the invention is suitable for the passive sampling and runoff treatment of rainfall runoff
The operational monitoring of structures (such as Rain Garden)；Adsorbent material using polyurethane as rainfall runoff Passive sampler, to rain
The adsorption rate of Semi-volatile organism is fast in water, adsorption rate is stable, adsorption capacity is big, to the Semi-volatile organism of runoff concentration level
There are the acquisition capacity of several months or even several years, can be used for the passive sampling of single rainfall or long-term rain runoff, be able to reflect
The accumulated time feature of Runoff contaminants.
(2) present invention is added in flexible polyurethane foam a certain amount of efficiency reference compound (PRCs), according to
The sampling rate for escaping the passive device of rate correction polyurethane rainwater of PRCs, keeps the analysis result of sampler more acurrate, effect is more
It is good.
(3) Passive sampler of the invention, which uses, has reserved water level to design and without reserved water level design two；When for rain
When the runoff treatments structures passive sampling such as spray garden, it can be sampled respectively to becoming a mandarin and going out stream, monitor its operational effect.
(4) cost of polyurethane rainfall runoff Passive sampler of the present invention is low, and sampling process does not have power consumption, saves people
Power material resources.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of polyurethane rainfall runoff Passive sampler of the present invention, and wherein Fig. 1 (a) is no reserved water
The structure type of position setting, Fig. 1 (b) are the structure type for having reserved water level setting；
Fig. 2 is the structural schematic diagram of PVC grid；
Fig. 3 is that polyurethane rainfall runoff Passive sampler of the invention shows for detecting the installation of Rain Garden operational effect
It is intended to, wherein Fig. 3 (a) is become a mandarin the scheme of installation at place in Rain Garden, and Fig. 3 (b) is the installation at Rain Garden water outlet
Schematic diagram；
Figure label: 1 is PVC casing；2 be PVC grid；3 be flexible polyurethane foam；4 be double-layer polyester monofilament net；5
For flowmeter；6 be reserved water level；7 be polyurethane rainfall runoff Passive sampler；8 be assembling PVC display pipe；9 be Rain Garden
Medium.
Specific embodiment
As shown in Fig. 1 (a) and Fig. 1 (b), the polyurethane rainfall runoff Passive sampler of the present embodiment, is to be vertically arranged
PVC casing 1 be shell, a PVC grid 2 is each provided at the upper/lower terminal mouth of PVC casing 1, in the inside of PVC casing 1
Filled with column flexible polyurethane foam 3, pair of lamina monofilament polyester is each provided in the upper/lower terminal of flexible polyurethane foam 3
Net 4.The structural schematic diagram of PVC grid is as shown in Figure 2.
Flowmeter 5 is provided with below the PVC grid at PVC sleeve upper end mouth.
When it is implemented, in order to adapt to different needs, the Passive sampler of the present embodiment is used without reserved water level design
(Fig. 1 (a)) and there is reserved water level design (Fig. 1 (b)) two.As shown in Fig. 1 (b), reserves water level 6 and be arranged in PVC sleeve upper end
Between PVC grid at mouthful and the double-layer polyester monofilament net at flexible polyurethane foam upper end.Reserved water level is traditionally arranged to be 10-
12cm is suitable with the reserved water level of runoff treatment structures.
Available energy reference compound (PRCs) is added in flexible polyurethane foam, is gathered according to the rate correction that escapes of PRCs
The sampling rate of urethane rainwater Passive sampler monitors rainwater runoff pollution object concentration in conjunction with the runoff rate that flow measurement obtains,
Keep the analysis result of sampler more acurrate, effect is more preferable.
Under normal circumstances, the height of flexible polyurethane foam 3 is set as 7-9cm.By the way that suitable polyurethane pillar height is arranged
Degree, Passive sampler have higher adsorption rate and adsorption capacity to the Semi-volatile organism in rainfall runoff.
The application method of this embodiment is illustrated by way of example polyurethane rainfall runoff Passive sampler: Fig. 3 is the poly- of the present embodiment
Urethane rainfall runoff Passive sampler is used to detect the schematic diagram of Rain Garden operational effect.In use, passively being adopted using two
Sample device is used cooperatively, and one is used in the place that becomes a mandarin, and one is used at water outlet.As shown in Fig. 3 (a), the polyurethane at the place that becomes a mandarin is set
Rainfall runoff Passive sampler 7 is partly waved for monitor that rainwater in Rain Garden becomes a mandarin using there is the structure type of reserved water level
Content of organics is sent out, polyurethane rainfall runoff Passive sampler 7 is mounted on the upper end of assembling PVC display pipe 8, assembles PVC shell
Rain Garden medium 9 is filled in pipe 8.As shown in Fig. 3 (b), the polyurethane rainfall runoff Passive sampler 7 at water outlet is set
Using without the structure type for reserving water level, go out the Semi-volatile organism content flowed, polyurethane for monitoring rainwater in Rain Garden
Rainfall runoff Passive sampler 7 is mounted on the lower end of assembling PVC display pipe 8, and rain is loaded in the upper end of assembling PVC display pipe 8
Garden medium 9.Rain Garden media depth is identical as the Rain Garden Effective medium depth monitored.It becomes a mandarin and goes out by comparison
Testing result at stream, you can learn that the operational effect of Rain Garden.
Claims (4)
1. a kind of polyurethane rainfall runoff Passive sampler, it is characterised in that: with the PVC casing (1) that is vertically arranged for shell,
It is each provided with a PVC grid (2) at the upper/lower terminal mouth of the PVC casing (1), is filled in the inside of the PVC casing (1)
There are column flexible polyurethane foam (3), is each provided with pair of lamina polyester in the upper/lower terminal of the flexible polyurethane foam (3)
Monofilament net (4)；
The height of the flexible polyurethane foam (3) is 7-9cm.
2. polyurethane rainfall runoff Passive sampler according to claim 1, it is characterised in that: be located at the PVC casing
Flowmeter (5) are provided with below PVC grid at upper port.
3. polyurethane rainfall runoff Passive sampler according to claim 1, it is characterised in that: on the PVC casing
Reserved water level (6) are provided between PVC grid at port and the double-layer polyester monofilament net at flexible polyurethane foam upper end.
4. polyurethane rainfall runoff Passive sampler according to claim 1, it is characterised in that: in the soft polyurethane ester
Available energy reference compound is added in foam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610079342.6A CN105628449B (en) | 2016-02-02 | 2016-02-02 | A kind of polyurethane rainfall runoff Passive sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610079342.6A CN105628449B (en) | 2016-02-02 | 2016-02-02 | A kind of polyurethane rainfall runoff Passive sampler |
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| Publication Number | Publication Date |
|---|---|
| CN105628449A CN105628449A (en) | 2016-06-01 |
| CN105628449B true CN105628449B (en) | 2019-04-12 |
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| CN201610079342.6A Active CN105628449B (en) | 2016-02-02 | 2016-02-02 | A kind of polyurethane rainfall runoff Passive sampler |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7059206B1 (en) * | 1999-08-25 | 2006-06-13 | University Of Portsmouth | Aquatic passive sampling device and methods for its use |
| CN102095607A (en) * | 2009-12-11 | 2011-06-15 | 中国科学院沈阳应用生态研究所 | Slope surface runoff sampler and using method thereof |
| CN102519755A (en) * | 2011-11-17 | 2012-06-27 | 浙江大学 | System and method for collecting dioxin in water body |
| CN202676533U (en) * | 2012-06-01 | 2013-01-16 | 广东产品质量监督检验研究院 | Low-cost organic contaminant gathering device used for large-sized water sample pretreatment |
| CN205333365U (en) * | 2016-02-02 | 2016-06-22 | 安徽大学 | Passive sample thief of polyurethane rainfall runoff |
-
2016
- 2016-02-02 CN CN201610079342.6A patent/CN105628449B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7059206B1 (en) * | 1999-08-25 | 2006-06-13 | University Of Portsmouth | Aquatic passive sampling device and methods for its use |
| CN102095607A (en) * | 2009-12-11 | 2011-06-15 | 中国科学院沈阳应用生态研究所 | Slope surface runoff sampler and using method thereof |
| CN102519755A (en) * | 2011-11-17 | 2012-06-27 | 浙江大学 | System and method for collecting dioxin in water body |
| CN202676533U (en) * | 2012-06-01 | 2013-01-16 | 广东产品质量监督检验研究院 | Low-cost organic contaminant gathering device used for large-sized water sample pretreatment |
| CN205333365U (en) * | 2016-02-02 | 2016-06-22 | 安徽大学 | Passive sample thief of polyurethane rainfall runoff |
Non-Patent Citations (1)
| Title |
|---|
| 《Quantification of herbicide removal in a constructed wetland using passive samplers and composite water quality monitoring》;Declan Page et al;《Chemosphere》;20101231;第81卷;第395页右栏第1-3段 * |
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| CN105628449A (en) | 2016-06-01 |
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