CN201848424U - Contaminated soil leaching remediation equipment - Google Patents
Contaminated soil leaching remediation equipment Download PDFInfo
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- CN201848424U CN201848424U CN2010206014823U CN201020601482U CN201848424U CN 201848424 U CN201848424 U CN 201848424U CN 2010206014823 U CN2010206014823 U CN 2010206014823U CN 201020601482 U CN201020601482 U CN 201020601482U CN 201848424 U CN201848424 U CN 201848424U
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- leacheate
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- contaminated soil
- drip washing
- screen cloth
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Abstract
Contaminated soil leaching remediation equipment belongs to the technical field of soil remediation and comprises a soil breaking and screening device, a leaching and mixing device, a vibrating screen, a settling tank, a sludge storage tank, a sludge separating device, a leacheate recovery tank, a leacheate filter device, a leacheate purifying device and a leacheate storage tank which are connected sequentially. The vibrating screen includes two stages of screen meshes, wherein the pore of the first stage of screen mesh is larger than that of the second stage of screen mesh but smaller than that of the soil breaking and screening device. The contaminated soil leaching remediation equipment realizes automatic soil leaching treatment, can be applied to small-sized industrial production, and accordingly labor input is reduced and production efficiency is increased. Simultaneously, the contaminated soil leaching remediation equipment can be used as experimental equipment for soil leaching and is a high-efficiency and convenient experimental tool for research and teaching staff to research on soil leaching. In addition, parameters of leacheate selection, mixing time and speed, water-soil ratio and soil size grade and the like of the contaminated soil leaching remediation equipment can be adjusted, thereby facilitating adjustment of leaching scheme and being suitable for chemical leaching treatment of organic substance contaminated soil.
Description
Technical field
The utility model relates to the drip washing prosthetic appliance of contaminated soil, belongs to the soil remediation technical field.
Background technology
Soil is the important component part of the ecosystem, also is the mankind's one of environmental resources that live of relying.Along with the development of modern industrial and agricultural production, chemical fertilizer, agricultural chemicals are used in a large number, and industrial wastewater is constantly attacked the farmland, urban industry refuse and other artificial synthetics constantly enter soil, the garbage loading embeading seepage, oil mining and atmospheric sedimentation cause the soil environment contamination accident constantly to take place.After pollutant enters soil, not only influence the variation of the inner biota of growth and development of plants and soil and the conversion of material, cause grain yield and quality to descend, can cause secondary pollution surface water, underground water etc.Pollutant also can pass through soil-plant system, and agricultural product security is constituted a serious threat; Enter human body through food chain, the harm population health.
Chinese soil pollutes and simply being divided into the pollution of ploughing, the pollution of industrial place, mine pollution.Along with the industrialization urbanization process is accelerated, implementation " is moved back two and advances three " in the city, and the resettlement corporate boss will comprise industry and enterprises such as chemical industry, iron and steel, nonferrous metallurgy, machine-building, light industry.These plant area of enterprise soil, groundwater environment are subjected to the pollution effect of industrial activity and " three wastes " quite serious, must carry out repairing and treating to contaminated soil after risk assessment and reach the reduction risk, change the needs that the soil utilizes character to satisfy.In recent years, urban construction developing target market scale sharply expands, and urban land resource is in short supply day by day at present.The industrial land that these cement out and might be changed the soil and utilize character becomes the higher lands used of environmental quality requirement such as commercial and residential estate and develops construction.As seen, urban land resource plans that again postindustrial land used faces transition, and the improvement of contaminated soil becomes a kind of urgent and necessary task.
The recovery technique research of contaminated soil is carried out for many years both at home and abroad.There is not a special technique to have general applicability so far.As a kind of chemical treatment method rapidly and efficiently, the chemical leaching technology is used for the soil remediation of high concentration in a large number and handles.This technology is one of twentieth century end Environmental Protection Agency method of recommending the improvement soil organic pollutant that uses.
Dystopy chemical leaching recovery technique starts from the eighties in 20th century, different with in-situ chemical drip washing recovery technique, the reparation of dystopy chemical leaching is to excavate, place contaminated soil in the container, clean, remove pollutant on the soil with water-soluble chemical reagent, handle waste water or the waste liquid that contains pollutant again.
The dystopy chemical leaching is handled as follows to the advantage of organic material contaminated soil:
(1) from waiting to develop the efficient that eliminate in the land pollution source, the advantage of chemical leaching technology is the pollutant that can in time take out of high concentration from original position, displace the plot of cleaning, for the quick turnover and the utilization of frequent, the urgent urban soil of contaminated land displacement exploitation, be an instant effect, easy-operating recovery technique approach.
(2) from the applicability of this technology, chemical leaching technology applied widely can be used for handling organic pollution, inorganic pollution and radioactive pollutant, and artificial controllability is stronger.
(3) from implementing this technology to removing the efficient of soil pollutant, the chemical leaching technology is removed the efficient height, repairs the duration weak point, as long as select suitable solvent or surfactant, can obtain higher removal.
(4) from the exploitativeness of this technology, technology is totally feasible.Because of its equipment belongs to the unit operations system, can transport, also detachable, repacking, according to flexible characteristics are arranged, the technology that helps is more promoted.
Yet the at present domestic also contaminated soil chemical leaching prosthetic appliance of ripe realized automation not, and also there are certain difficulty in the recovery of leacheate, regeneration.
The utility model content
Technical problem to be solved in the utility model is, overcomes the above-mentioned shortcoming of prior art, and a kind of drip washing prosthetic appliance of contaminated soil is provided, it can realize that automation drip washing handles contaminated soil, solved the difficult problem of leacheate recovery, regeneration.
In order to solve above technical problem, the drip washing prosthetic appliance of the contaminated soil that the utility model provides, it is characterized in that: comprise the soil breaking screening plant, drip washing mixing plant, vibratory sieve, sedimentation basin, muddy water storage tank, mud and water separating equipment, leacheate accumulator tank, leacheate filter plant, leacheate cleaning equipment, the leacheate storage tank that link to each other successively, described vibratory sieve has the two-stage screen cloth, the hole of first order screen cloth is the hole greater than second level screen cloth, and less than the screen cloth hole of soil breaking screening plant.
The soil breaking screening plant carries out fragmentation to contaminated soil, and sieve removes foreign material such as stone, big particle diameter gravel, soil after the fragmentation is sent in the tank diameter of drip washing mixing plant, in tank diameter, import the leacheate that configures simultaneously, carry out stirring operation by the driven by motor stirring arm, realize that muddy water fully mixes.Mud after drip washing is stirred flows out from the valve that drip washing mixing plant below is provided with, and drops on the two-layer vibratory sieve, and particle diameter is trapped on the screen cloth greater than the particle of mesh size, and the less soil particle of particle diameter enters sedimentation basin by screen cloth.After sedimentation basin bottom dish valve was opened, mud entered the muddy water storage tank, and carried out mud-water separation by being pumped into mud and water separating equipment.Leacheate after the Separation of Solid and Liquid is sent into the leacheate accumulator tank, and purifies, regenerates through leacheate filter plant, leacheate cleaning equipment, finally imports the leacheate storage tank, realizes the recycling of leacheate; Mud cake after the mud and water separating equipment dehydration is sent to outdoor natural air drying.Through after the drip washing, organic pollution meets relevant criterion in the soil.The big soil of the particle of being held back by screen cloth can backfill or as building the road.According to concrete purposes, the raw material of can be used as system cement, baking bricks also can be considered promptly to finish whole soil remediation process as reclaiming or agricultural through the fine grained soil of mud-water separation.
As seen, the drip washing prosthetic appliance of the utility model contaminated soil has been realized the automation of soil chemistry drip washing, can be applicable to small-scale industrial applications, has reduced artificial input, has improved production efficiency greatly; Also can be used as simultaneously the experimental facilities of soil drip washing, provide the high efficient and convenient experimental tool for the scientific research personnel studies soil chemistry drip washing.The selection of the mixing time of the utility model drip washing mixing plant, mixing speed, leacheate, water and soil when soil divide parameters such as particle diameter all can adjust, and help the adjustment to the drip washing scheme, are applicable to the processing of various organic material contaminated soils.
Further, in the drip washing prosthetic appliance of the utility model contaminated soil, described sedimentation basin bottom be bucket-shaped, and the middle part is provided with the overfall of being with valve, described overfall by flexible pipe can with leacheate accumulator tank UNICOM.
The supernatant liquor of sedimentation basin can directly go to the leacheate accumulator tank, reduces the work load of mud and water separating equipment, improves the operating efficiency of mud and water separating equipment.
Further, in the drip washing prosthetic appliance of the utility model contaminated soil, the screen cloth hole of described soil breaking screening plant is: 5-10mm, and the first order screen cloth hole of described vibratory sieve is the 5-8 order, second level screen cloth hole is the 20-40 order.
The screen cloth of soil breaking screening plant can sieve foreign material such as stone, oarse-grained gravel, the two-stage screen cloth can be held back the soil particle in coarse grain footpath, in order to analyze the drip washing effect of different drip washing schemes to the different-grain diameter soil particle, thereby deployable various contrast test, help to adjust in practice concrete drip washing scheme, reach best drip washing effect.
Further again, in the drip washing prosthetic appliance of the utility model contaminated soil, described leacheate filter plant is the sand filtration post, fills two-layer quartz sand in the post from top to bottom, and particle diameter is about 2-4 order and 10-20 order respectively.Described leacheate cleaning equipment is an activated-charcoal column, is filled with activated carbon granule in the post.The front end of sand filtration post is provided with single-phase self priming pump, and the far-end of the flexible pipe that single-phase self priming pump water inlet connects places the bottom land of leacheate accumulator tank.
The utility model equipment leacheate can be selected ethanol water (10%-30%) for use, the sand filtration post can filter the leacheate that reclaims, organic molecule in the adsorbable leacheate of active carbon, and do not adsorb ethanol molecule in the leacheate, realize separating of eluent and pollutant, leacheate is purified, regenerates, and can be back to lessivation again.Can regenerate or processing such as burning to the disposal of adsorbing saturated active carbon.
As seen, the utility model ingenious conception, simple in structure, handling process is reasonable, has realized the full-automation that soil drip washing is repaired, and has solved the regeneration and the recycling difficult problem of leacheate.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is the drip washing prosthetic appliance structural representation of the utility model contaminated soil.
The specific embodiment
The drip washing prosthetic appliance of the contaminated soil of present embodiment, as shown in Figure 1, comprise soil breaking screening plant 1, drip washing mixing plant 2, vibratory sieve 3, sedimentation basin 4, muddy water storage tank 5, mud and water separating equipment 6, leacheate accumulator tank 7, leacheate filter plant 9, leacheate cleaning equipment 10, the leacheate storage tank 11 that links to each other successively.
In the present embodiment, sedimentation basin 4 bottoms are bucket-shaped, and the middle part is provided with the overfall 4-1 of band valve, and overfall 4-1 is by flexible pipe and leacheate accumulator tank 7 UNICOMs.In this example, mud and water separating equipment 6 is the plate filter press, and the far-end of the flexible pipe 6-2 that plate filter press 6 water pump 6-1 water inlets connect places the bottom land of mud storage tank 5.Leacheate filter plant 9 is the sand filtration post, fill two-layer quartz sand in the post from top to bottom, particle diameter is respectively 2-4 order and 10-20 order, leacheate cleaning equipment 10 is an activated-charcoal column, be filled with activated carbon granule in the post, the front end of sand filtration post 9 is provided with single-phase self priming pump 8, and the far-end of the flexible pipe 8-1 that single-phase self priming pump 8 water inlets connect places the bottom land of leacheate accumulator tank 7.The water inlet 9-1 of sand filtration post 9, delivery port 9-2 lay respectively at sand filtration post 9 tops, sand filtration post 9 bottoms, the water inlet 10-1 of activated-charcoal column 10, delivery port 10-2 lay respectively at activated-charcoal column 10 tops, activated-charcoal column 10 bottoms, and the water inlet 9-1 of sand filtration post 9 is higher than the water inlet 10-1 of activated-charcoal column 10.Leacheate flow through successively under the gravity effect sand filtration post 9 and activated-charcoal column 10 have been realized filtration, purification, the regeneration of leacheate, reach cycling and reutilization.
In addition to the implementation, the utility model also can have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (6)
1. the drip washing prosthetic appliance of contaminated soil, it is characterized in that: comprise the soil breaking screening plant, drip washing mixing plant, vibratory sieve, sedimentation basin, muddy water storage tank, mud and water separating equipment, leacheate accumulator tank, leacheate filter plant, leacheate cleaning equipment, the leacheate storage tank that link to each other successively, described vibratory sieve has the two-stage screen cloth, the hole of first order screen cloth is greater than the hole of second level screen cloth, and less than the screen cloth hole of soil breaking screening plant.
2. the drip washing prosthetic appliance of contaminated soil according to claim 1, it is characterized in that: the screen cloth hole of described soil breaking screening plant is: 5-10mm, the first order screen cloth hole of described vibratory sieve is the 5-8 order, second level screen cloth hole is the 20-40 order.
3. the drip washing prosthetic appliance of contaminated soil according to claim 1 is characterized in that: described sedimentation basin bottom is for bucket-shaped, and the middle part is provided with the overfall of band valve, and described overfall is by flexible pipe and leacheate accumulator tank UNICOM.
4. according to the drip washing prosthetic appliance of claim 1 or 2 or 3 described contaminated soils, it is characterized in that: described mud and water separating equipment is the plate filter press, and the far-end of the flexible pipe that plate filter press pump intake connects places the bottom land of mud storage tank.
5. the drip washing prosthetic appliance of contaminated soil according to claim 4, it is characterized in that: described leacheate filter plant is the sand filtration post, fill two-layer quartz sand in the post from top to bottom, particle diameter is respectively 2-4 order and 10-20 order, described leacheate cleaning equipment is an activated-charcoal column, fill activated carbon granule in the post, the front end of sand filtration post is provided with single-phase self priming pump, and the far-end of the flexible pipe that single-phase self priming pump water inlet connects places the bottom land of leacheate accumulator tank.
6. the drip washing prosthetic appliance of contaminated soil according to claim 5, it is characterized in that: the entery and delivery port of described sand filtration post lays respectively at sand filtration post top, sand filtration column bottom, the entery and delivery port of activated-charcoal column lays respectively at activated-charcoal column top, activated-charcoal column bottom, and the water inlet of described sand filtration post is higher than the water inlet of activated-charcoal column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206014823U CN201848424U (en) | 2010-11-11 | 2010-11-11 | Contaminated soil leaching remediation equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206014823U CN201848424U (en) | 2010-11-11 | 2010-11-11 | Contaminated soil leaching remediation equipment |
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| CN201848424U true CN201848424U (en) | 2011-06-01 |
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| CN2010206014823U Expired - Fee Related CN201848424U (en) | 2010-11-11 | 2010-11-11 | Contaminated soil leaching remediation equipment |
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| CN102974607A (en) * | 2012-12-21 | 2013-03-20 | 中国科学院地理科学与资源研究所 | Elution repairing device and repairing method of arsenic polluted soil and wastes |
| CN103240266A (en) * | 2012-04-27 | 2013-08-14 | 罗春晖 | Mobile soil washing apparatus and method thereof |
| CN103286122A (en) * | 2013-04-12 | 2013-09-11 | 浙江桃花源环保科技有限公司 | Leaching restoration engineered apparatus for persistent organic pollutant-contaminated site |
| CN103722006A (en) * | 2014-01-09 | 2014-04-16 | 环境保护部南京环境科学研究所 | Organo-chlorine pesticide contaminated soil synergism eluting system |
| CN103722005A (en) * | 2013-12-25 | 2014-04-16 | 天津生态城环保有限公司 | Chemical leaching system for treating soil heavy metal and organic pollution |
| CN103785677A (en) * | 2014-01-26 | 2014-05-14 | 河北欧美环境工程有限公司 | Integrated device for heavy metal contaminated soil remediation and leacheate recycling and method thereof |
| CN103831293A (en) * | 2014-02-19 | 2014-06-04 | 江苏日升环保工程有限公司 | Complete equipment for soil remediation by leaching method |
| 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 |
| CN104646408A (en) * | 2014-10-16 | 2015-05-27 | 中山大学 | Device and method for separating polymers in soil |
| CN104646407A (en) * | 2014-12-23 | 2015-05-27 | 北京建工环境修复股份有限公司 | Cleaning system for contaminated building clinkers in contaminated sites and cleaning method thereof |
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| CN109759428B (en) * | 2019-01-29 | 2022-02-18 | 湖南新九方科技有限公司 | Soil leaching machine suitable for heavy metal contaminated soil remediation |
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| CN115156272A (en) * | 2022-06-01 | 2022-10-11 | 华南理工大学 | Farmland soil heavy metal removing and repairing equipment and method |
| CN115156272B (en) * | 2022-06-01 | 2023-11-14 | 华南理工大学 | Farmland soil heavy metal removal and restoration equipment and method |
| CN115228911A (en) * | 2022-06-22 | 2022-10-25 | 中国化学工程重型机械化有限公司 | Pollute soil restoration with drip washing test system |
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