CN102371267A

CN102371267A - Technical device for quickly repairing soil pollution by advanced oxidation

Info

Publication number: CN102371267A
Application number: CN2011102701093A
Authority: CN
Inventors: 李元元; 张毅; 李忠玉; 滕加泉
Original assignee: CHANGZHOU EXPANSION NEW STUFF TECHNOLOGY Co Ltd
Current assignee: Ningbo Yuanpai Medical Technology Co ltd
Priority date: 2011-09-04
Filing date: 2011-09-04
Publication date: 2012-03-14
Anticipated expiration: 2031-09-04
Also published as: CN102371267B

Abstract

A technical device for rapidly remediating soil pollution by advanced oxidation. The present invention modifies the catalytic material on the basis of electrochemistry, and uses water as the medium to maximize the concentration of the oxidizing substance under an external electric field, and dilute the soil through the excited oxidizing substance of the new ecological potential. The organic pollutants contained in it undergo rapid and strong oxidative decomposition. Adopting this technology can remove more than 95% of the organic pollutants in the soil of heavily polluted industrial enterprises, industrial legacy sites, solid waste stacking and disposal sites.

Description

The technique device that the quick rehabilitating soil of a kind of advanced oxidation pollutes

Technical field

This innovation relates to a kind of soil organic and pollutes former displacement fast repair technique; Particularly place, solid useless stacking and treatment and disposal place are left in heavily contaminated industry and enterprise, industry recovery scenario is provided; Use this integrated technology to repair fast and effectively to contaminated soil; Reach and improve repairing environment, ensure the purpose of people's physical and mental health.

Background technology

Along with urbanization process is accelerated, contaminating enterprises' resettlement, former factory site is in the process that changes purposes, and the soil pollution problem is more outstanding.Polluted soil mainly concentrates on heavy polluted industry enterprise, place, solid useless the stacking and treatment and disposal place, oil field, mining area, dirty irrigated area, large-scale cultivation field, main line of communication both sides and surrounding area are left in industry.Without the investigation assessment, directly build residential building or building for commercial use before most contaminated site development and use, health and ecological environment are constituted a serious threat.Research and development reduction process cost, soil remediation technology simple to operate, non-secondary pollution are the top priorities of response country " 12 " planning, also are the trend of future development.

The inventor with material as the breach; Set about carrying out modification from electrochemical techniques; Binding kinetics, Mechanics of Machinery, materialogy research and development meet the integrated technology of former the rapid integrated reparation of displacement of contaminated soil, use this technique device in the shortest time, most economical operating cost, to carry out harmless former displacement reparation to soil solution is provided.

The innovation content

The present invention is directed to the defective or the deficiency that exist in the prior art; Providing a kind of is the high-level oxidation technology on basis with the electrochemical principle; Contaminated soil is carried out former displacement repair,, reach the purpose of protection environment for quick clean reparation of contaminated soil provides complete integrated technology device.Technical scheme of the present invention is following:

The technique device that the quick rehabilitating soil of a kind of advanced oxidation pollutes comprises casing 1, mud import 2, mud buffering area 3, gas-water separation plate 4, mud import baffle plate 5, gas collection cap 6, electrode draw-in groove 7, electrode holder 8, oxidation reaction zone 9, gas vent 10, turbine propulsion device 11, variable speed electric motors, particularly 12, mud overflow baffle 13, mud collecting region 14, mud outlet 15, turbine stirring district 16 and totally enclosed repair system of battery lead plate 17 compositions.

Contaminated soil is got in the mud buffering area 3 of casing 1 by mud import 2 under the effect of slush pump pressurization after the water dilution is evenly stirred; Get into turbine stirring district 16 from mud import baffle plate bottom through brief stay; Mud slowly passes through oxidation reaction zone 9 through the top entering mud collecting region 14 of peroxidization from mud overflow baffle 13 by oxidation reaction zone 9 bottoms under the effect of turbine propulsion device 11, under the gravity effect, discharge repair systems from mud outlet 15.

After the gas that contaminated soil is volatilized in repair process is separated by gas-water separation plate 4, get into plenum zone and forced after gas vent 10 is discharged, to get into follow-up emission-control equipment by gas collection cap 6.

Technique effect of the present invention is following:

Because the technique device that the quick rehabilitating soil of a kind of advanced oxidation of the present invention pollutes; With electrochemistry is that modification is carried out on the basis on catalysis material; With water is that medium oxidizing substance concentration under extra electric field obtains maximized raising, and the oxidizing substance of the newborn situation of passing through to be inspired carries out fast strong oxidation Decomposition to the contained organic pollution in soil dilution back.Adopt this technology can to heavily contaminated industry and enterprise, industry leave over the place, solid useless stack and the soil in treatment and disposal place in the clearance of organic pollution reach more than 95%.

The technique device that the quick rehabilitating soil of a kind of advanced oxidation of this innovation pollutes, the soil of leaving over the plot that can be widely used in after polluted enterprises such as chemical industry, agricultural chemicals, pharmacy are moved is repaired fast, can also directly be used for the bed mud reparation in urban look river.

Description of drawings:

Accompanying drawing 1 is that the technique device that the quick rehabilitating soil of a kind of advanced oxidation pollutes is faced generalized section; Accompanying drawing 2 is technique device side-looking generalized sections that the quick rehabilitating soil of a kind of advanced oxidation pollutes.

The graphical indicia explanation:

1, housing 2, mud import 3, mud buffering area 4, gas-water separation plate 5, mud baffle 6, gas collection cap

7, electrode draw-in groove 8, bracing frame 9, oxidation reaction zone 10, gas vent 11, turbine propulsion device 12, variable speed electric motors, particularly

13, mud overflow baffle 14, mud collecting region 15, mud outlet 16, turbine stirring district 17 battery lead plates

The specific embodiment

Below in conjunction with accompanying drawing and embodiment the present invention is further specified.

Contaminated soil dilutes through water after the sludge pump pressurization stops in the mud buffering area 3 that mud import 2 gets into the housings 1 slightly; Under the pressure of mud baffle 5, get into turbine stirring district 16; Because the mud settleability is high; Be provided with turbine propulsion device 11 in 16 bottoms, turbine stirring district and prevent mud sediment, mud slowly rises through oxidation reaction zone 9 under 11 effects of turbine propulsion device, the strong oxidation Decomposition of quilt in oxidation reaction zone 9.Mud after the oxidation gets into mud collecting region 14 from 13 overflows suitable for reading of mud overflow baffle, under the gravity effect, exports 15 discharge systems through mud.

Mud after peroxidating pollutes organic matter and is decomposed, and wets mud by backfill through the dehydration back.

Embodiment (one)

Project name: plot soil remediation pilot scale plant (test plant area) is left in the normalizing of Changzhou Tianning District

Treating capacity: 2m ³/ h

Turbine stirrer: dischargeable capacity is 0.5m ³, mixing time is 15 minutes, power of agitator is 1kw

Slush pump: GWP25-8-22-1.1 power of motor 1.1kw.h

Tertiary oxidation device: 16 on 13 negative electrodes 1000 * 300 of anode 1000 * 300 (mm) (mm)

Gas sampling device: 12 power 30w of the active felt ￠ 600 * 900mm quartz burner of material modification carbon wavelength 185nm caliber ￠ 16mm

Vortex fan 0.37/28000

The pilot scale time: on June 1st, 2011

Treatment effect: it is following to entrust Australia's real analysis to detect 's testing result by Changzhou Institute for Environmental Research

Embodiment (two)

Project name: plot soil remediation pilot scale plant (chlor-alkali plant area) is left in the normalizing of Changzhou Tianning District

Handle the water yield: 2m ³/ h

Slush pump: GWP 25-8-22-1.1 power of motor 1.1kw.h

Vortex fan 0.37/28000

The pilot scale time: on May 30th, 2011

Should be pointed out that the above specific embodiment can make those skilled in the art more fully understand this innovation, but limit this innovation never in any form.Therefore, although this specification has carried out detailed explanation with reference to accompanying drawing and embodiment to this innovation,, it will be appreciated by those skilled in the art that still and can make amendment or be equal to replacement the present invention; And all do not break away from the technical scheme and the improvement thereof of the spirit and the scope of this innovation, and it all should be encompassed in the middle of the protection domain of this innovation patent.

Claims

1. A technical device for rapidly repairing soil pollution by advanced oxidation, comprising a casing 1, a mud inlet 2 at both ends of the casing, a mud outlet 15, and a gas collection cover 6 above the casing 1 to form a closed repair system, characterized in that : mud buffer zone 3, air-water separation plate 4, mud baffle 5, turbine stirring zone 16, oxidation reaction zone 9, mud overflow baffle 13, mud collection zone 14, shell 1 is provided with a gas collection cover 6, forming a closed processing system. The mud baffle 5 separates the mud buffer zone 3 from the oxidation reaction zone 9 , and the mud overflow baffle 13 separates the oxidation reaction zone 9 from the mud collection zone 14 .

2. A technical device for rapidly repairing soil pollution by advanced oxidation according to claim 1, characterized in that: the shell 1 is welded by steel plates, and the inside of the shell 1 needs anti-corrosion treatment. The diluted soil enters the mud buffer zone 3 from the mud inlet 2 for a short stay, and enters the turbine stirring zone 16 from the bottom of the buffer zone 3 under the action of the mud baffle 5, and under the force of the turbine propeller 11, The bottom of the oxidation reaction zone 9 enters the oxidation reaction zone 9, and the mud decomposed by the oxidation reaction overflows through the upper opening of the mud overflow baffle 13 and enters the mud collection area 14, and is discharged from the treatment system through the mud outlet 15. The gas generated during the strong oxidation process when the mud enters the oxidation reaction zone 9 passes through the gas-water separation plate 4 and is collected in the gas collection hood 6, and is discharged from the treatment system through the gas outlet 10. The top and both sides of the mud baffle 5 and the mud buffer zone 3 are sealed and welded, and the bottom and both sides of the mud overflow baffle 13 and the shell 1 are sealed and welded. The two sides of the slant plate in the collection area 14 are sealed and welded to the top of the shell 1 and the mud baffle 13. The oxidation reaction area 9 is fixed on the support frame 8 above the turbine stirring area 16, and the two sides of the support frame 8 The ends are welded and fixed with the mud baffle 5 and the mud overflow baffle 13 respectively. The drive shaft of the turbine propeller 11 is sealed and fixed at the center of the bottom of the housing 1 , and the drive shaft passes through the seal and is connected to the variable speed motor 12 .

3. A technical device for rapid restoration of soil pollution by advanced oxidation according to claim 2, characterized in that: the shape of the housing 1 is a cuboid, the lower part is an inverted trapezoid, and the cuboid and the inverted trapezoid are welded together One. The mud inlet end 2 of the shell 1 is sealed and welded with the mud baffle 5 to form a mud buffer zone 3, and the mud outlet 15 is welded with a mud overflow baffle 13 to form a mud collection area 14, between the mud baffle 5 and the mud overflow baffle 13 It is the oxidation reaction zone 9.

4. A technical device for rapid restoration of soil pollution by advanced oxidation according to claim 2, characterized in that: the gas-water separation plate 4 is fixed together with screws between the gas collection cover 6 and the casing 1. The gas collection cover 6 is in the shape of a positive trapezoid and is formed by welding steel plates or PVC welding or winding FRP.

5. A technical device for rapid restoration of soil pollution by advanced oxidation according to claim 2, characterized in that: the oxidation reaction zone 9 is composed of multiple sets of electrode plates 17, and the combination of electrode plates 17 is two Arranged in the order of yin and yang, according to the increase or decrease of the processing capacity. The electrode plate 17 is based on a titanium plate, and the surface of the anode plate is coated with a sintered nano-titanium oxide layer as a protective layer so that the base material does not participate in the direct oxidation reaction, prolonging the service life of the electrode. The sintered yttrium, europium and cerium alloy oxidation catalyst layer is coated for the second time, and the iridium is doped in the alloy oxide as a stabilizer. Multiple sets of sorted cathode and anode electrode plates 17 are fixed on the electrode slot 7 to form a multi-channel oxidation reaction zone 9 . The distance between the electrodes is 1-3 cm. The oxidation reaction zone 9 is fixed on the support frame 8 , and both ends of the support frame 8 are welded and fixed on the shell 1 .

6. A technical device for rapid restoration of soil pollution by advanced oxidation according to claim 2, characterized in that: said turbine propeller 11 is an upper and lower two-layer stirring impeller processed from 316L stainless steel plate, and the stirring impeller is fixed on On the transmission shaft, the transmission shaft is connected with the variable speed motor 12 outside the housing 1 .