CN101386020A - Swirling flow mud elution reactor of allotopia treatment contaminated soil and cyclodextrin elution system containing the swirling flow mud elution reactor - Google Patents
Swirling flow mud elution reactor of allotopia treatment contaminated soil and cyclodextrin elution system containing the swirling flow mud elution reactor Download PDFInfo
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- CN101386020A CN101386020A CNA2008101105753A CN200810110575A CN101386020A CN 101386020 A CN101386020 A CN 101386020A CN A2008101105753 A CNA2008101105753 A CN A2008101105753A CN 200810110575 A CN200810110575 A CN 200810110575A CN 101386020 A CN101386020 A CN 101386020A
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Abstract
The invention discloses a swirl slurry elution reactor for ectopia treating contaminated soil and a cyclodextrin elution system formed by the elution reactor, which belong to the technical field of chemical treatment of contaminated soil. The swirl slurry elution reactor consists of a main reactor and a swirl propelling system. An inlet for the soil to be treated is arranged at the upper part of the side wall of the reactor, an outlet for the treated soil is arranged at the lower part of the reactor, and a soil sampling hole is arranged at the middle part of the reactor. A transmission shaft connected with swirl vanes is connected with a swirl propeller. The cyclodextrin elution system consists of the swirl slurry elution reactor, slurry cyclodextrin solution and a centrifugal separation system; wherein, the soil-water ratio of the slurry cyclodextrin solution is 1:1-4, and the mass ratio of water to cyclodextrin is 100:5-7. The invention has the advantages of easy control and operation of operating conditions, high speed and high efficiency, no secondary pollution, etc.
Description
Technical field
The invention belongs to the chemical treatment method field of contaminated soil, be specifically related to a kind of dystopy and handle the swirl slurry elution of reactive device of contaminated soil and the cyclodextrin elution system of composition thereof.
Background technology
Soil pollution constitutes a serious threat to Sustainable Use of Soil Resources, agricultural product ecological safety and human health life, and soil pollution in recent years has the trend that constantly increases the weight of, thus the control of contaminated soil with repair the important content become Chinese scholars research.
The method that contaminated soil is administered mainly contains physics method, microbial method, plant method and chemical method at present.Mainly there is the high and halfway shortcoming of reparation of disposal cost in the physics restorative procedure.Though microbial method and plant method restorative procedure have simple to operate, advantages such as operating cost is low, non-secondary pollution, but in actual application, to be subjected to influences such as local environment geological conditions and climatic factor, and these influence factors are difficult to carry out Artificial Control, and repairing efficiency is longer simultaneously.In chemical method, there is the scholar to utilize organic pollution in the wash-out soil such as organic solvent (as ethanol, n-hexane, carrene, chloroform, acetone) and surfactant both at home and abroad, but can has secondary pollution problems.Utilize cyclodextrin wash-out polycyclic aromatic hydrocarbon pollution be a kind of simple, quick, efficiently and not produce the method for secondary pollution.
But, further promoted and used in order to make this technology, the elution efficiency that improves cyclodextrin eluent has great importance for saving processing cost and operating cost, and wherein developing a kind of elution of reactive of dystopy efficiently device is the important means that improves treatment effeciency.But also there is not report at present about dystopy repairing polluted soil elution of reactive device.
Summary of the invention
The purpose of this invention is to provide a kind of dystopy and handle the swirl slurry elution of reactive device of contaminated soil, further purpose is to utilize this reactor to design a cover cyclodextrin elution system.
Particular content of the present invention is as follows:
(1) swirl slurry elution of reactive device is made up of main body reactor and eddy flow propulsion system.
(2) form by reactor capping, sidewall of reactor, reactor base at main body reactor described in (1); Sidewall of reactor top is provided with pending soil import, soil outlet after the set handling of bottom, and the middle part is provided with the soil sample mouth.
(3) form by swirl propeller, power transmission shaft and swirl vane in eddy flow propulsion system described in (1).
(4) cyclodextrin elution system is made up of the device of swirl slurry elution of reactive described in (1), mud cyclodextrin solution and centrifugal separation system.
(5) be 1:2～4 at the Tu Shui of mud cyclodextrin solution described in (4) ratio, the mass ratio of water and cyclodextrin is 100:5～7.
Described cyclodextrin is methyl beta cyclodextrin, hydroxypropyl beta cyclodextrin or acetyl group beta cyclodextrin.
The present invention has service condition and is easy to control and operates, fast, efficiently, do not produce advantages such as secondary pollution.
Description of drawings
Accompanying drawing is the cyclodextrin elution system of swirl slurry elution of reactive device and composition thereof.1 is sidewall of reactor in the accompanying drawing, and 2 are the soil sample mouth, and 3 is processed soil, and 4 is pending soil import, and 5 is the reactor capping, and 6 is swirl propeller, and 7 is power transmission shaft, and 8 is swirl vane, and 9 is reactor base, and 10 for handling back soil outlet.
The specific embodiment
Further specify the present invention below in conjunction with example.
Material:
(1) sidewall of reactor, reactor capping, reactor base, swirl propeller, power transmission shaft, swirl vane.(2) polycyclic aromatic hydrocarbon pollution.(3) methyl beta cyclodextrin, hydroxypropyl beta cyclodextrin, acetyl group beta cyclodextrin: analyze pure.
Embodiment 1
Reactor capping, sidewall of reactor and reactor base are formed the elution of reactive device, on sidewall of reactor top a pending soil import is set, soil outlet after the set handling of sidewall of reactor bottom is provided with the soil sample mouth at the sidewall of reactor middle part.The power transmission shaft that is connected to swirl vane is connected on the swirl propeller.Add polycyclic aromatic hydrocarbon pollution by pending soil import, adding mass concentration in Tu Shui than the ratio for 1:2 is the methyl beta cyclodextrin solution of 60g/L.Open the eddy flow motor, the operation cyclodextrin elution system is carried out centrifugation, the soil after obtaining handling after 24 hours.Contaminated soil before and after handling is carried out the extraction and the mensuration of polycyclic aromatic hydrocarbon, the result shows: by 34.3mg/kg, the 18.9mg/kg, the 8.2mg/kg that handle after preceding 205.8mg/kg, 74.9mg/kg, 76.7mg/kg are reduced to processing, clearance is respectively 83.0%, 74.8%, 89.3% to the concentration of phenanthrene, anthracene, pyrene respectively.
Reactor capping, sidewall of reactor and reactor base are formed the elution of reactive device, on sidewall of reactor top a pending soil import is set, soil outlet after the set handling of sidewall of reactor bottom is provided with the soil sample mouth at the sidewall of reactor middle part.The power transmission shaft that is connected to swirl vane is connected on the swirl propeller.Add polycyclic aromatic hydrocarbon pollution by pending soil import, adding mass concentration in Tu Shui than the ratio for 1:3 is the hydroxypropyl beta cyclodextrin of 60g/L.Open the eddy flow motor, the operation cyclodextrin elution system is carried out centrifugation, the soil after obtaining handling after 24 hours.Contaminated soil before and after handling is carried out the extraction and the mensuration of polycyclic aromatic hydrocarbon, the result shows: by 54.8mg/kg, the 32.8mg/kg, the 16.8mg/kg that handle after preceding 205.8mg/kg, 74.9mg/kg, 76.7mg/kg are reduced to processing, clearance is respectively 73.4%, 56.2%, 78.1% to the concentration of phenanthrene, anthracene, pyrene respectively.
Reactor capping, sidewall of reactor and reactor base are formed the elution of reactive device, on sidewall of reactor top a pending soil import is set, soil outlet after the set handling of sidewall of reactor bottom is provided with the soil sample mouth at the sidewall of reactor middle part.The power transmission shaft that is connected to swirl vane is connected on the swirl propeller.Add polycyclic aromatic hydrocarbon pollution by pending soil import, adding mass concentration in Tu Shui than the ratio for 1:4 is the acetyl group beta cyclodextrin of 60g/L.Open the eddy flow motor, the operation cyclodextrin elution system is carried out centrifugation, the soil after obtaining handling after 24 hours.Contaminated soil before and after handling is carried out the extraction and the mensuration of polycyclic aromatic hydrocarbon, the result shows: by 65.9mg/kg, the 33.9mg/kg, the 19.7mg/kg that handle after preceding 205.8mg/kg, 74.9mg/kg, 76.7mg/kg are reduced to processing, clearance is respectively 68.0%, 54.7%, 74.3% to the concentration of phenanthrene, anthracene, pyrene respectively.
Claims (6)
1. a swirl slurry elution of reactive device is characterized in that, this swirl slurry elution of reactive device is made up of main body reactor and eddy flow propulsion system.
2. according to the described main body reactor of claim 1, it is characterized in that this main body reactor is made up of reactor capping, sidewall of reactor, reactor base; Sidewall of reactor top is provided with pending soil import, soil outlet after the set handling of bottom, and the middle part is provided with the soil sample mouth.
3. according to the described eddy flow propulsion system of claim 1, it is characterized in that this eddy flow propulsion system is made up of swirl propeller, power transmission shaft and swirl vane.
4. a cyclodextrin elution system of handling contaminated soil is characterized in that, this elution system is made up of the described swirl slurry elution of reactive of claim 1 device, mud cyclodextrin solution and centrifugal separation system.
5. according to the described mud cyclodextrin solution of claim 4, it is characterized in that the Tu Shui of this mud cyclodextrin solution is than being 1:2～4, the mass ratio of water and cyclodextrin is 100:5～7.
6. according to the described mud cyclodextrin solution of claim 4, it is characterized in that described cyclodextrin is methyl beta cyclodextrin, hydroxypropyl beta cyclodextrin or acetyl group beta cyclodextrin.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101105753A CN101386020A (en) | 2008-06-04 | 2008-06-04 | Swirling flow mud elution reactor of allotopia treatment contaminated soil and cyclodextrin elution system containing the swirling flow mud elution reactor |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008101105753A CN101386020A (en) | 2008-06-04 | 2008-06-04 | Swirling flow mud elution reactor of allotopia treatment contaminated soil and cyclodextrin elution system containing the swirling flow mud elution reactor |
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| CN101386020A true CN101386020A (en) | 2009-03-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104438308A (en) * | 2013-09-22 | 2015-03-25 | 重庆文理学院 | Radial flow type inner circulation fluidized bed soil heavy metal elution apparatus |
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- 2008-06-04 CN CNA2008101105753A patent/CN101386020A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104438308A (en) * | 2013-09-22 | 2015-03-25 | 重庆文理学院 | Radial flow type inner circulation fluidized bed soil heavy metal elution apparatus |
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Open date: 20090318 |