CN204631035U - A kind of assembly type device for contaminated soil Leaching Experiments - Google Patents
A kind of assembly type device for contaminated soil Leaching Experiments Download PDFInfo
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- CN204631035U CN204631035U CN201520396007.XU CN201520396007U CN204631035U CN 204631035 U CN204631035 U CN 204631035U CN 201520396007 U CN201520396007 U CN 201520396007U CN 204631035 U CN204631035 U CN 204631035U
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- 239000002689 soil Substances 0.000 title claims abstract description 99
- 238000002386 leaching Methods 0.000 title claims abstract description 71
- 238000002474 experimental method Methods 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000007788 liquid Substances 0.000 claims abstract description 34
- 239000011521 glass Substances 0.000 claims abstract description 7
- 239000003365 glass fiber Substances 0.000 claims description 7
- 239000010419 fine particle Substances 0.000 claims description 4
- 230000002572 peristaltic effect Effects 0.000 claims description 4
- 230000000630 rising effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 12
- 238000005273 aeration Methods 0.000 abstract description 10
- 238000005406 washing Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 7
- 239000003344 environmental pollutant Substances 0.000 abstract description 5
- 231100000719 pollutant Toxicity 0.000 abstract description 4
- 238000005067 remediation Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000012502 risk assessment Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 6
- 238000011084 recovery Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000000706 filtrate Substances 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- 238000011109 contamination Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- ZGTMUACCHSMWAC-UHFFFAOYSA-L EDTA disodium salt (anhydrous) Chemical compound [Na+].[Na+].OC(=O)CN(CC([O-])=O)CCN(CC(O)=O)CC([O-])=O ZGTMUACCHSMWAC-UHFFFAOYSA-L 0.000 description 1
- 241000168254 Siro Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011020 pilot scale process Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000003403 water pollutant Substances 0.000 description 1
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- Processing Of Solid Wastes (AREA)
Abstract
The utility model is the leaching by pollutant in soil under simulating natural condition, for assessing the environmental risk before and after the drip washing repairing effect of contaminated site or contaminated soil remediation, provide a kind of modular appliance for contaminated soil Leaching Experiments, comprise the feed liquor module, leaching module and the leaching liquor collection module that connect in turn; Described feed liquor module comprises liquid storage pipe, is positioned at the water distributor that uniform glass core filter plate water-locator is housed of liquid storage pipe lower end, and wherein liquid storage pipe is connected with side snorkel by adjusting knob with water distributor; Described leaching module comprises for loading the soil eluviation pipe treating leaching soil, has the U trap of snorkel and band breaking plant in soil eluviation pipe both sides respectively; Described leaching liquor collection module comprises the adjusting knob of bulb shape separatory funnel and bulb shape separatory funnel outlet.The utility model has the feature of simulated soil leaching process in aeration zone and water-bearing zone two parts simultaneously.
Description
Technical field
The utility model relates to contaminated soil remediation and risk assessment field, more specifically, relates to a kind of assembly type device for contaminated soil Leaching Experiments.
Background technology
Along with industry and agriculture fast development and rural urbanization, China's soil contamination problem is on the rise, soil pollution area is also increasing year by year, and soil contamination problem is own through becoming the significant problem hindering China's sustainable economic development.Therefore, extremely urgent with reparation to the risk assessment of contaminated soil.
On February 19th, 2014, Environmental Protection Department issued " contaminated site risk assessment technology directive/guide ", and this directive/guide whole nation in July 1 the same year is formal implements.In this directive/guide, when assessing the underground water risk of contaminated site, desirably descend the concentration parameter of water pollutant.This parameter is generally obtained by the field investigation of existing contaminated site.But for paraprotehetic soil, the potential risk assessment after its reparation obtains often through simulated experiment.Therefore, when designing soil remediation engineering, usually needing the soil after to reparation to carry out simulated eluviation experiment, carrying out risk assessment to obtain relevant parameter.Rationality and the validity of design is verified again conversely, to guarantee the technical feasibility of design proposal according to the result of risk assessment.
In addition, single from recovery technique, Soil leaching (soil flushing or soil washing) is the recovery technique of a kind of widely used original position or dystopy, and its through engineering approaches has been applied in the soil of repairing heavy metal pollution or multi-pollutant composite pollution by multiple countries that comprise China.And " contaminated site soil restoring technology directive/guide " (enforcement on July 1st, 2014) of environmentally protection portion issue; work out in (7.2) at the feasibility assessment (6.2) and recovery scenario that carry out Soil leaching recovery technique; all need to carry out laboratory lab scale simulated experiment; to determine the feasibility of this technology in specific contaminated site, and determine various process parameters index in pilot scale and Practical Project (selection of such as leacheate kind, concentration, consumption, drip washing condition, expection drip washing effect and affect the factor etc. of drip washing effect).And contaminated soil experimental device for washing is the simulated experiment instrument commonly used the most.
Traditional contaminated soil Leaching Experiments device is generally one section of hollow cylinder, and its length is determined according to the degree of depth of soil.First, the lower end of cylinder fixes filter cloth and flows out earth pillar to prevent soil particle with leaching liquor, and the soil layer order simulated by contaminated soil under its state of nature loads in post.Leaching liquor is injected by cylinder upper port, flows through the leaching liquor after earth pillar by entering Filtrate collection device after the filtration of lower end filter cloth, then analyzes filtrate.This conventional apparatus evaluates leaching effect mainly through the heavy metal concentration in monitoring filtrate.The defect that traditional experiment device exists mainly is that experiment soil is not all be in undersaturated condition, is exactly all in water-bearing zone state.When needing the pollution of surface soil under simulating natural condition, namely simultaneously containing aeration zone and water-bearing zone, usually need to carry out box experiment.And soil amount needed for box experiment is not only bigger than normal, flow field is also difficult to control.
Utility model content
The purpose of this utility model overcomes the deficiencies in the prior art, by the drip washing of pollutant in soil under simulating natural condition, environmental risk before and after the effect of repairing for assessment contaminated site drip washing or contaminated soil remediation, provides a kind of modular appliance for contaminated soil Leaching Experiments.
To achieve these goals, scheme of the present utility model is:
For a modular appliance for contaminated soil Leaching Experiments, comprise the feed liquor module, leaching module and the leaching liquor collection module that connect in turn;
Described feed liquor module comprises liquid storage pipe, is positioned at the water distributor that uniform glass core filter plate water-locator is housed of liquid storage pipe lower end, and wherein liquid storage pipe is connected with side snorkel by adjusting knob with water distributor;
Described leaching module comprises for loading the soil eluviation pipe treating leaching soil, has the U trap of snorkel and band breaking plant in soil eluviation pipe both sides respectively;
Described leaching liquor collection module comprises the adjusting knob of bulb shape separatory funnel and bulb shape separatory funnel outlet.
This device can the leaching process of soil simultaneously in aeration zone and water-bearing zone after the reparation under simulating natural condition, lays the foundation for repairing the risk assessment of rear soil under natural leaching condition.This device also may be used for the Soil leaching process under model engineering condition in aeration zone and water-bearing zone, more adequately can reflect that soil is after drip washing, the existing forms of its pollutant and content, for the feasibility assessment of soil eluviation recovery technique and follow-up full scale constructed wetland project design provide basic data.
Its course of work is: first wrap up soil by glass fiber filter paper, then puts into soil eluviation pipe (soil eluviation pipe is cylindric), and the upper end of soil eluviation pipe and feed liquor model calling, lower end is connected with leaching liquor collection module.Leaching liquor is injected liquid storage pipe, controls flow rate of liquid by adjusting knob (threeway adjusting knob), leaching liquor, by water distributor, evenly flows to the soil in soil eluviation pipe by run by gravity.When the height of soil liquid exceedes siphonal most significant digit point, the part exceeded will enter bulb shape separatory funnel by U trap, control discharge velocity at the adjusting knob by bulb shape separatory funnel bottom.
Further, the U trap of described band breaking plant comprises the siphon inlet elbow, the band siphon that are positioned at side bottom soil eluviation pipe and breaks siphon hose and the siphon rising pipe of ring valve or pipe.
Further, described soil eluviation pipe is equipped with for preventing Soil fine particles from entering siphonal glassfibre filters.
Further, described liquid storage pipe is also circumscribed with the elevated tank water inlet pipe of band pipe plug.
Further, described liquid storage pipe is the graduated columniform liquid storage pipe of band.
Further, in order to improve conveying precision, described water distributor is circumscribed with peristaltic pump water inlet pipe.
Further, feed liquor module, connector between leaching module and leaching liquor collection module are frosted mouth or similar compact siro spinning technology.
Compared with prior art, the beneficial effect of technical solutions of the utility model is: this device can the leaching process of soil simultaneously in aeration zone and water-bearing zone after the reparation under simulating natural condition, lays the foundation for repairing the risk assessment of rear soil under natural leaching condition.This device also may be used for the Soil leaching process under model engineering condition in aeration zone and water-bearing zone, more adequately can reflect that soil is after drip washing, the existing forms of its pollutant and content, for the feasibility assessment of soil eluviation recovery technique and follow-up full scale constructed wetland project design provide basic data.
Accompanying drawing explanation
Fig. 1 is the assembly type device schematic diagram of contaminated soil Leaching Experiments of the present utility model.
Fig. 2 is the schematic diagram of feeding device.
Fig. 3 is the schematic diagram of leaching device.
Fig. 4 is the schematic diagram of leaching liquor gathering-device.
Embodiment
Below in conjunction with drawings and Examples, the technical solution of the utility model is described further.
In figure: 1-liquid storage pipe, 2-glass core filter plate water-locator, 3-water distributor, 4-adjusting knob, 5-snorkel, 6-soil eluviation pipe, 7-U trap, 71-siphon inlet elbow, 72-siphon hose, 73-siphon rising pipe, 74-siphon break ring valve or pipe, 8-bulb shape separatory funnel, 9-glassfibre filters, 10-elevated tank water inlet pipe, 11-peristaltic pump water inlet pipe.
As Fig. 1 to 4, a kind of modular appliance for contaminated soil Leaching Experiments, comprises the feed liquor module, leaching module and the leaching liquor collection module that connect in turn; Above-mentioned feed liquor module, connector between leaching module and leaching liquor collection module are frosted mouth;
Feed liquor module comprises liquid storage pipe 1, is positioned at the water distributor 3 that uniform glass core filter plate water-locator 2 is housed of liquid storage pipe 1 lower end, and wherein liquid storage pipe 1 is connected with side snorkel 5 by adjusting knob 4 with water distributor 3; In the present embodiment, liquid storage pipe 1 is the graduated columniform liquid storage pipe of band, and is circumscribed with the elevated tank water inlet pipe 10 of band pipe plug; Water distributor 3 is circumscribed with peristaltic pump water inlet pipe 11;
Leaching module comprises for loading the soil eluviation pipe 6 treating leaching soil, has the U trap 7 of snorkel 5 and band breaking plant in soil eluviation pipe 6 both sides respectively; Leaching liquor collection module comprises the adjusting knob 4 of bulb shape separatory funnel 8 and bulb shape separatory funnel outlet, and adjusting knob 4 can control the period that leaching liquor is collected.
The U trap 7 of above-mentioned band breaking plant comprises the siphon inlet elbow 71, the band siphon that are positioned at side bottom soil eluviation pipe 6 and breaks siphon hose 72 and the siphon rising pipe 73 of ring valve or pipe.Soil eluviation pipe 6 is equipped with the glassfibre filters 9 for preventing Soil fine particles from entering U trap 7.
The graduated cylindrical liquid storage pipe of above-mentioned band, is used for temporary reservoir leaching liquor; The water distributor of glass core filter plate water-locator is housed below liquid storage pipe, can realizes pending soil water distribution uniformity; The balance that snorkel keeps the upper and lower air pressure of feeding device is equipped with in side, realizes leaching liquor flowing under the force of gravity.
Connected by adjusting knob between feed liquor module and leaching module, the flow velocity of regulable control liquid can be carried out by control handle openings of sizes and feed tube liquid level (external water tank), or control feed liquor speed by external peristaltic pump.
Soil eluviation pipe is mainly used to place pending soil, below soil eluviation pipe, glassfibre filters is housed, can prevents Soil fine particles from entering U trap; Side snorkel is to keep air pressure balance; Siphonal effect is the outflow controlling liquid, makes the state that soil natural formation aeration zone and water-bearing zone coexist.The above soil of U trap peak level is aeration zone, and it is lower is saturated aquifer.U trap part is flexible pipe, can change water level height in soil eluviation pipe by regulating the angle of U trap and soil eluviation pipe, thus the distribution in aeration zone and water-bearing zone in change soil.
The reparation of the present embodiment heavy metal contaminated site soil eluviation is as follows:
Process certain Cell polluted soil, Ni, Cd of contaminated site are seriously polluted, and the carcinogenic risk calculated according to " contaminated site risk assessment technology directive/guide " and harm quotient all far can accept.
1, adopt 16 mmol/L Na2EDTA as leaching liquor.
2, in conjunction with the scale above liquid storage pipe, flow velocity is made to be probably 10 ml/min by regulating adjusting knob (threeway adjusting knob).
3, adopt as glass assemblies formula device as shown in Figure 1, liquid storage pipe height is set to 5 cm, diameter 2 cm, and water distributor height is 5 cm, diameter 2 cm, and side snorkel is 0.5 cm, and external elevated tank keeps liquid storage pipe liquid level constant.Soil eluviation pipe height is 25 cm, loading treat that leaching soil height is 20 cm, diameter 3 cm, wherein aeration zone part 5 cm, water-bearing zone part 15 cm, lower part height is 5 cm, diameter 1 cm.U trap diameter 0.2 cm, bulb shape separatory funnel 50 ml.
4, soil glass fiber filter paper wrapped up, put into soil eluviation pipe, the upper end of soil eluviation pipe and feed liquor model calling, lower end is connected with leaching liquor collection module.Whole device support is fixed.
5, open threeway adjusting knob and reach the state that flow velocity is 10 ml/min, liquid by the effect of water distributor laggard enter soil, leaching 3 hours, leaching 4 times.
6, experiment can be analyzed the leaching sample of different time and last pedotheque after terminating.
The corresponding same or analogous parts of same or analogous label;
Describe in accompanying drawing position relationship for only for exemplary illustration, the restriction to this patent can not be interpreted as;
Obviously, above-described embodiment of the present utility model is only for the utility model example is clearly described, and is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.All do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., within the protection domain that all should be included in the utility model claim.
Claims (7)
1. for a modular appliance for contaminated soil Leaching Experiments, it is characterized in that, comprise the feed liquor module, leaching module and the leaching liquor collection module that connect in turn;
Described feed liquor module comprises liquid storage pipe (1), is positioned at the water distributor (3) that uniform glass core filter plate water-locator (2) is housed of liquid storage pipe (1) lower end, and wherein liquid storage pipe (1) is connected with side snorkel (5) by adjusting knob (4) with water distributor (3);
Described leaching module comprises for loading the soil eluviation pipe (6) treating leaching soil, has the U trap (7) of snorkel (5) and band breaking plant in soil eluviation pipe (6) both sides respectively;
Described leaching liquor collection module comprises the adjusting knob (4) of bulb shape separatory funnel (8) and bulb shape separatory funnel outlet.
2. the modular appliance for contaminated soil Leaching Experiments according to claim 1, it is characterized in that, the U trap (7) of described band breaking plant comprises the siphon inlet elbow (71), the band siphon that are positioned at side, soil eluviation pipe (6) bottom and breaks siphon hose (72) and the siphon rising pipe (73) of ring valve or pipe.
3. the modular appliance for contaminated soil Leaching Experiments according to claim 2, is characterized in that, described soil eluviation pipe (6) is equipped with the glassfibre filters (9) for preventing Soil fine particles from entering U trap (7).
4. the modular appliance for contaminated soil Leaching Experiments according to claim 1, is characterized in that, described liquid storage pipe (1) is also circumscribed with the elevated tank water inlet pipe (10) of band pipe plug.
5. the modular appliance for contaminated soil Leaching Experiments according to claim 4, is characterized in that, described liquid storage pipe (1) is the graduated columniform liquid storage pipe of band.
6. the modular appliance for contaminated soil Leaching Experiments according to claim 1, is characterized in that, described water distributor (3) is circumscribed with peristaltic pump water inlet pipe (11).
7. the modular appliance for contaminated soil Leaching Experiments according to any one of claim 1 to 6, is characterized in that, feed liquor module, connector between leaching module and leaching liquor collection module are frosted mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520396007.XU CN204631035U (en) | 2015-06-10 | 2015-06-10 | A kind of assembly type device for contaminated soil Leaching Experiments |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520396007.XU CN204631035U (en) | 2015-06-10 | 2015-06-10 | A kind of assembly type device for contaminated soil Leaching Experiments |
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| CN204631035U true CN204631035U (en) | 2015-09-09 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979922A (en) * | 2017-05-11 | 2017-07-25 | 农业部环境保护科研监测所 | Soil eluviation post and soil eluviation simulation system |
| CN109085325A (en) * | 2018-09-13 | 2018-12-25 | 河北省地质环境监测院 | A kind of the indoor soil-column experimental provision and method of soil pollution and repairing and treating process simulation |
| CN109387616A (en) * | 2018-10-15 | 2019-02-26 | 桂林理工大学 | A kind of multiple index evaluation method of heavy-metal contaminated soil passivation repairing effect |
| CN109596809A (en) * | 2018-12-07 | 2019-04-09 | 山西大同大学 | A kind of simulation system of monitoring and pollutant dynamic release in land fill object under analysis leaching state |
| CN111044340A (en) * | 2020-01-08 | 2020-04-21 | 张小娟 | Soil mixed leaching pretreatment detection system and detection method thereof |
-
2015
- 2015-06-10 CN CN201520396007.XU patent/CN204631035U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979922A (en) * | 2017-05-11 | 2017-07-25 | 农业部环境保护科研监测所 | Soil eluviation post and soil eluviation simulation system |
| CN106979922B (en) * | 2017-05-11 | 2023-09-29 | 农业部环境保护科研监测所 | Soil leaching column and soil leaching simulation system |
| CN109085325A (en) * | 2018-09-13 | 2018-12-25 | 河北省地质环境监测院 | A kind of the indoor soil-column experimental provision and method of soil pollution and repairing and treating process simulation |
| CN109085325B (en) * | 2018-09-13 | 2024-01-05 | 河北省地质环境监测院 | Indoor soil column experiment device and method for simulating soil pollution and repair treatment process |
| CN109387616A (en) * | 2018-10-15 | 2019-02-26 | 桂林理工大学 | A kind of multiple index evaluation method of heavy-metal contaminated soil passivation repairing effect |
| CN109596809A (en) * | 2018-12-07 | 2019-04-09 | 山西大同大学 | A kind of simulation system of monitoring and pollutant dynamic release in land fill object under analysis leaching state |
| CN109596809B (en) * | 2018-12-07 | 2021-06-22 | 山西大同大学 | Simulation system for monitoring and analyzing dynamic release of pollutants in soil filler under leaching state |
| CN111044340A (en) * | 2020-01-08 | 2020-04-21 | 张小娟 | Soil mixed leaching pretreatment detection system and detection method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150909 Termination date: 20200610 |