CN203508589U

CN203508589U - Internal-circulating fluidized bed soil heavy metal elution device

Info

Publication number: CN203508589U
Application number: CN201320580413.2U
Authority: CN
Inventors: 于慧; 于芳; 王书敏
Original assignee: Chongqing University of Arts and Sciences
Current assignee: Chongqing University of Arts and Sciences
Priority date: 2013-09-22
Filing date: 2013-09-22
Publication date: 2014-04-02
Anticipated expiration: 2023-09-22

Abstract

The utility model discloses an internal-circulating fluidized bed soil heavy metal elution device which consists of two parts, namely an internal-circulating fluidized bed heavy metal elution area and a mud-liquid separation area, wherein the internal-circulating fluidized bed heavy metal elution area consists of seven parts, namely an eluent inlet (1), a contaminated soil inlet (2), an internal circulating barrel (3), a flow guide impeller (4), a transmission shaft (5), a flow guide plate (6) and a motor (7); the mud-liquid separation area is divided into two parts, namely a downward flow area and an upward flow area which are 3.0 meters in depth; two mud buckets are connected to the bottom of the mud-liquid separation areas, and are 0.8 meter in depth; the internal-circulating fluidized bed heavy metal elution area has a reinforced concrete cylinder structure with the internal diameter of 0.8 meter and the depth of 3.0 meters; the internal circulating barrel (3) with the internal diameter of 0.3 meter and the height of 1.5 meters is arranged at a central position which is 0.2 to 1.7 meters away from the bottom in the cylinder structure; the transmission shaft (5) and the flow guide impeller (4) are arranged at the centerline positions in the internal circulating barrel (3); the top end of the transmission shaft (5) is connected with the motor (7). The device has the advantages that heavy metal in soil can be continuously eluted, the elution time and the soil elution volume within a unit time can be adjusted, and requirements on operating conditions for the rapid elution of the heavy metal in the soils of different contamination types can be met; mud and liquid are integrally automatically separated, so that the recovery of clean soil and the subsequent centralized treatment of heavy metal-rich eluent are facilitated.

Description

A kind of ICFB heavy metal-polluted soil washing device

Technical field

The utility model patent belongs to heavy-metal contaminated soil chemistry recovery technique field, is specifically related to a kind of ICFB heavy metal-polluted soil washing device, is particularly useful for the showering of severe heavy-metal contaminated soil.

Background technology

Soil is mankind's natural environment of depending on for existence and the important foundation of agricultural production.Since the twenties in 20th century, due to industrial expansion, the output of metal obviously increases, and consequent heavy metal problem of environmental pollution is appearance thereupon also, and many countries start to be faced with the problem that soil pollution seriously hinders agricultural production.It is reported, China is subject to the arable land of heavy metal pollution to reach 300,000,000 mu, and heavy metal pollution occurred industry to agricultural shift, city shifts to underground transfer, upstream downstream to transfer of rural, earth's surface, from water and soil, pollute to food chain and shift, by polluting progressively accumulation, enter the situation of polluting sudden, linksystem, regional outburst.Therefore, seek the heavy metal pollution of soil improvement technology of economical and efficient extremely urgent.

At present, the restorative procedure of heavy metal pollution of soil mainly contains the methods such as physics reparation, chemistry reparation and biological restoration.Compare with other restorative procedures, chemical repair method have stable treatment effect, cycle short, administer the advantages such as thorough, be particularly useful for the quick improvement of serious pollution soil.Patent documentation CN102225425A " a kind of ELUTION METHOD of restoration of soil polluted by heavy metal " has reported a kind of chemical repair method of heavy-metal contaminated soil, yet the method also rests at laboratory stage; Patent documentation CN101704017A " method of extracting heavy metal ions and device thereof from soil " has proposed a kind of Extraction of Heavy Metals method for cadmium, chromium, copper, mercury, lead and other elements contaminated soil, but the method is equally in laboratory stage.For heavy metal pollution of soil, concentrate the present situation of outburst, the heavy metal-polluted soil elution technique of exploitation adaptation Production requirement is extremely important.

Summary of the invention

The defect and the deficiency that for prior art, exist, propose a kind of ICFB heavy metal-polluted soil washing device integrating with production technology demand.This device can be realized the continuous operation of heavy metal-polluted soil wash-out, meanwhile, can realize native liquid automatically separated, and then reclaim the cleaning soil after wash-out.

The technical scheme of utility model patent is as follows:

A kind of ICFB heavy metal-polluted soil washing device, it is characterized in that: described device is comprised of He Niye Disengagement zone, ICFB heavy metal elution zone two parts, wherein, ICFB heavy metal elution zone is comprised of eluent entrance (1), the soil entrance (2) of getting dirty, interior circulating barrel (3), impeller inducer (4), power transmission shaft (5), deflector (6), motor (7) seven parts.The mud liquid Disengagement zone of ICFB heavy metal-polluted soil washing device is lower upper deflector type structure, be divided into Xia Xiangliu district and upward flow district two parts, deeply be 3.0 meters, bottom connects two buckets, all dark 0.8 meter of bucket, the built-in two phase separator in upward flow region (10), the two phase separator degree of depth is 1.5 meters, after the Disengagement zone separation of mud liquid, the extract that is rich in heavy metal is discharged by top, upward flow district, mud liquid Disengagement zone, and cleaning soil is collected in bucket.ICFB heavy metal elution zone is 0.8 meter of internal diameter, the steel concrete cylindrical structure of dark 3.0 meters, cylinder interior is installed the interior circulating barrel (3) of 0.3 meter, high 1.5 meters of internal diameters near the center at 0.2-1.7 rice, bottom, simultaneously, the interior position of center line of interior circulating barrel (3) is installed power transmission shaft (5), impeller inducer (4), and power transmission shaft (5) top is connected with motor (7); U-PVC at pre-buried two the diameter 50mm of Reinforced Concrete Structure bottom of cylinder manages respectively as eluent entrance (1) and the soil entrance (2) of getting dirty.Deflector (6) diameter of ICFB heavy metal elution zone is 300mm, can be arranged on 20cm and Liang Ge position, steel concrete cylindrical structure top directly over interior circulating barrel, realizes respectively heavy metal-polluted soil fluidisation wash-out and sedimentary soil and discharges two functions.

The major advantage of the utility model patent is as follows: (1), realized the continuous operation of heavy metal-polluted soil wash-out, and elution time, unit interval soil elution amount all can regulate by the soil addition of getting dirty, and can meet the operating condition requirement of the quick wash-out of different pollution type heavy metal-polluted soil; (2), that device integral body has realized native liquid is automatically separated, facilitated the recovery of cleaning soil and be rich in the follow-up of heavy metal washing lotion to focus on; (3), ICFB frictional impact and the native liquid mixability of having strengthened soil particle be set, improved heavy metal cleaning efficiency.

Accompanying drawing explanation

Fig. 1 is the overall schematic of this device; Fig. 2 is device A-A profile.

In figure: 1-eluent entrance; 2-soil the entrance of getting dirty; 3-interior circulating barrel; 4-impeller inducer; 5-power transmission shaft; 6-deflector; 7-motor; 8-bucket I; 9-bucket II; 10-two phase separator.

The specific embodiment

Referring to Fig. 1-Fig. 2, this device is comprised of He Niye Disengagement zone, ICFB heavy metal elution zone two parts, and wherein, You Xiaxiangliu district, mud liquid Disengagement zone and upward flow district two parts form; ICFB heavy metal elution zone is comprised of eluent entrance (1), the soil entrance (2) of getting dirty, interior circulating barrel (3), impeller inducer (4), power transmission shaft (5), deflector (6), motor (7) seven parts, and mud liquid Disengagement zone is comprised of bucket I (8), bucket II (9) and two phase separator.First, process 0.8 meter of an internal diameter, the Reinforced Concrete Structure cylinder of dark 3.0 meters, cylinder inner wall is done preservative treatment, cylinder interior is installed the interior circulating barrel (3) of 0.3 meter, high 1.5 meters of internal diameters near the center at 0.2-1.7 rice, bottom, simultaneously, the interior position of center line of interior circulating barrel (3) is installed power transmission shaft (5), impeller inducer (4), and power transmission shaft (5) top is connected with motor (7); U-PVC at pre-buried two the diameter 50mm of Reinforced Concrete Structure bottom of cylinder manages respectively as eluent entrance (1) and the soil entrance (2) of getting dirty; Deflector (6) is the level and smooth convex structure of diameter 300mm, device brings into operation the stage, the soil of bottom, ICFB heavy metal elution zone deposition is less, deflector (6) is arranged on 20cm place directly over interior circulating barrel, prolongation along with running time, the soil of bottom, ICFB heavy metal elution zone deposition increases gradually, now deflector (6) is installed on to 10cm place, Reinforced Concrete Structure cylinder top, the soil of deposition is discharged, again deflector (6) is reinstalled in afterwards to 20cm place directly over interior circulating barrel.Secondly, mud liquid Disengagement zone is the lower upper deflector type structure of adjoining with ICFB heavy metal elution zone, and dark 3.0 meters, bottom connects two buckets, all dark 0.8 meter of bucket; Lower to 0.8 meter of the stream region length of side, be total to wall with Reinforced Concrete Structure cylinder; The built-in two phase separator in upward flow region (10), the two phase separator degree of depth is 1.5 meters, and after twice separation in mud liquid Disengagement zone, the extract that is rich in heavy metal is discharged by top, upward flow district, mud liquid Disengagement zone, and cleaning soil is collected in bucket.Again, under desilt liquid Disengagement zone, outside stream part and Reinforced Concrete Structure cylinder common wall, all the other outer walls in Reinforced Concrete Structure cylinder and Xia Xiangliu district, mud liquid Disengagement zone all raise 0.5 meter, using as protectiveness superelevation.

Claims

1. an ICFB heavy metal-polluted soil washing device, it is characterized in that: described device is comprised of He Niye Disengagement zone, ICFB heavy metal elution zone two parts, wherein, ICFB heavy metal elution zone is comprised of eluent entrance (1), the soil entrance (2) of getting dirty, interior circulating barrel (3), impeller inducer (4), power transmission shaft (5), deflector (6), motor (7) seven parts.

2. a kind of ICFB heavy metal-polluted soil washing device as claimed in claim 1, it is characterized in that mud liquid Disengagement zone is lower upper deflector type structure, be divided into Xia Xiangliu district and upward flow district two parts, be deeply 3.0 meters, bottom connects two buckets, all dark 0.8 meter of bucket; The built-in two phase separator in upward flow region (10), the two phase separator degree of depth is 1.5 meters, and after the Disengagement zone separation of mud liquid, the extract that is rich in heavy metal is discharged by top, upward flow district, mud liquid Disengagement zone, and cleaning soil is collected in bucket.

3. a kind of ICFB heavy metal-polluted soil washing device as claimed in claim 1, it is characterized in that ICFB heavy metal elution zone is 0.8 meter of internal diameter, the steel concrete cylindrical structure of dark 3.0 meters, cylinder interior is installed the interior circulating barrel (3) of 0.3 meter, high 1.5 meters of internal diameters near the center at 0.2-1.7 rice, bottom, simultaneously, the interior position of center line of interior circulating barrel (3) is installed power transmission shaft (5), impeller inducer (4), and power transmission shaft (5) top is connected with motor (7); U-PVC at pre-buried two the diameter 50mm of Reinforced Concrete Structure bottom of cylinder manages respectively as eluent entrance (1) and the soil entrance (2) of getting dirty.

4. a kind of ICFB heavy metal-polluted soil washing device as claimed in claim 1, it is characterized in that deflector (6) diameter is 300mm, can be arranged on 20cm and position, two, 10cm place, steel concrete cylindrical structure top directly over interior circulating barrel, realize respectively heavy metal-polluted soil fluidisation wash-out and sedimentary soil and discharge two functions.