CN204657080U - Arsenic slag safe disposal system - Google Patents
Arsenic slag safe disposal system Download PDFInfo
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- CN204657080U CN204657080U CN201520217838.6U CN201520217838U CN204657080U CN 204657080 U CN204657080 U CN 204657080U CN 201520217838 U CN201520217838 U CN 201520217838U CN 204657080 U CN204657080 U CN 204657080U
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Abstract
The utility model discloses a kind of arsenic slag safe disposal system, comprise successively to top layer from bottom: basal layer (1), underground water guide layer (2), compacting soil protective layer (3), HDPE rete (4), geotechnological layer of cloth (5), effusion guide layer (6), arsenic slag blanket (7), exhaust level (8), impervious barrier (9), drainage blanket (10) and vegetable layer (11).This safe disposal system can not increase landfill volume, reduces cost of disposal, and effectively can control the precipitation of arsenic.
Description
Technical field
The utility model belongs to heavy metal pollution of soil recovery technique field, is specifically related to arsenic slag safe disposal system.
Background technology
Heavy metal pollution place causes primarily of industrial " three wastes " such as mining, smelting, plating, chemical industry, electronics, process hides dyestuffs etc., along with the industrialized fast development of China, heavy metal pollution space enrironment safety problem form is severe, polluted enterprises in China's rapid urbanization course or face resettlement, retired place ubiquity high environmental risk, forms significant threat to health and ecological environment.
The exploitation of industrial production, nonferrous metals ore (arsenic minerals, antimony ore and arsenic companion operating mine) and smelting are the primary pollution source of arsenic.Arsenic can be used for metallurgy and semi-conductor industry, as GaAs and copper arsenide.Therefore, the discharge of chemical industry, smelting, electronics industry and mine arsenic-containing waste water, waste residue, and the burning etc. of fossil fuel (as coal) is also the important sources causing arsenic to pollute.
The arsenic-containing waste residue produced in nonferrous metallurgical process is referred to as arsenic slag.Arsenic minerals, the antimony ore major part of China contain arsenic, and the secondary arsenic alkaline slag that the arsenic removal scum silica frost produced when adding soda ash arsenic removal in smelting process and its reduction produce is referred to as arsenic alkaline slag.In arsenic alkaline slag, the average content of arsenic is 1% ~ 10%, and its Main Ingredients and Appearance is natrium arsenicum, sodium antimonate and sodium carbonate etc.Because the arsenic in arsenic alkaline slag exists with natrium arsenicum form, severe toxicity and soluble in water, therefore unsuitable outdoor storage.At present, the volume of cargo in storage of national arsenic alkaline slag is up to more than 20 ten thousand tons, and annual generation is at about 10,000 tons.
The processing method of existing arsenic alkaline slag is mainly chemical precipitation and landfill.
Chemical precipitation method to utilize in arsenic alkaline slag natrium arsenicum can be water-soluble, and antimonious acid sodium and the water-fast character of sodium antimonate realize arsenic antimony and is separated, and make arsenic stripping.Arsenic alkaline slag is dissolved in a large amount of water by chemical precipitation method, and direct discharge can bring secondary pollution to environment.
Landfill method mainly refers to cement solidification stabilization processes arsenic alkaline slag, but due to cement addition large, cause cost of disposal high, add landfill volume, be unfavorable for landfill.In addition, according to simple landfill, have the possibility separating out arsenic, new pollution can be caused again.
Utility model content
For the deficiencies in the prior art, the utility model aims to provide arsenic slag safe disposal system, this arsenic slag safe disposal system is different from conventional simple landfill or adds cement solidify & bury, with this safe disposal system process arsenic slag, landfill volume can not be increased, reduce cost of disposal, and effectively can control the precipitation of arsenic.
For achieving the above object, the technical scheme that the utility model adopts is:
Arsenic slag safe disposal system, comprises from bottom successively to top layer: basal layer, underground water guide layer, compacting soil protective layer, HDPE rete, geotechnological layer of cloth, effusion guide layer, arsenic slag blanket, exhaust level, impervious barrier, drainage blanket and vegetable layer.
Further, the thickness>=700mm of described compacting soil protective layer, hydraulic conductivity K≤1 × 10
-7m/s.
Further, the thickness >=1.5mm of described HDPE rete, permeable to prevent.
Further, the geotextiles >=600g/ ㎡ of described geotechnological layer of cloth, to meet performance requirement.
Further, described effusion guide layer is cobble or gravel soil, and particle diameter is 16-32mm, laying depth >=300mm, with energy water conservancy diversion effusion smoothly.
Further, described exhaust level is cobble or porous material, and particle diameter is 32-64mm, thickness >=350mm, to control arsenic slag muck body gas.
Further, described impervious barrier is clay, its thickness >=200mm, prevents infiltration from entering arsenic slag muck body, prevents gas effusion arsenic slag muck body.
Further, described drainage blanket (10) is quartz sand, and particle diameter is 4-8mm, thickness >=300mm, to discharge the underground water infiltrated, reduces Infiltration water to the pressure of bottom impervious barrier.
Further, described vegetable layer (11) thickness >=450mm, protection impervious barrier, not by the destruction of dry contraction, freeze thawing etc., prevents drainage blanket from blocking, and remains stable.Its vegetable layer preferably plants ciliate desert-grass.
Further, the arsenic slag of described arsenic slag blanket is the arsenic slag of pH < 5, can be the arsenic slag of the pH < 5 after existing conventional method process, because pH is in acid, is conducive to the stable of arsenic.
Compared with prior art, advantage of the present utility model is:
1, this arsenic slag safe disposal system simple, reliable, can manipulation type strong.
2, this arsenic slag safe disposal system is different from conventional simple landfill or adds cement solidify & bury, with this safe disposal system process arsenic slag, can not increase landfill volume, reduce cost of disposal, and effectively can control the precipitation of arsenic.
Accompanying drawing explanation
Fig. 1 is arsenic slag safe disposal system architecture schematic diagram;
Wherein, 1 be basal layer, 2 are underground water guide layers, 3 are compacting soil protective layers, 4 are HDPE retes, 5 are geotechnological layer of cloths, 6 are effusion guide layers, 7 are arsenic slag blankets, 8 are exhaust level, 9 are impervious barriers, 10 are drainage blankets, 11 is vegetable layers.
Detailed description of the invention
In order to better understand the utility model, below in conjunction with example, the utility model is further described.
As shown in Figure 1, arsenic slag safe disposal system is up respectively basal layer 1 successively from bottom, basal layer should smooth, compacting, free from flaw, nothing is loosened the soil, surface should without ponding, stone, tree root and sharp object; Underground water guide layer 2, underground water guide layer adopts underground french drain; Compacting soil protective layer 3, thickness is 700mm, hydraulic conductivity K≤1 × 10
-7m/s; HDPE rete 4, thickness>=1.5mm; Geotechnique's layer of cloth 5, specification>=600g/ ㎡; Effusion guide layer 6, percolate guide layer selects cobble or gravel soil material, and its particle diameter is 16-32mm, and laying depth is 300mm; Arsenic slag blanket 7; Exhaust level 8, exhaust level selects cobble or porous material, and its particle diameter is 32-64mm, and thickness is 350mm; Impervious barrier 9, impervious barrier is clay, and its thickness is 200mm; Drainage blanket 10, drainage blanket selects quartz sand, and particle diameter is 4-8mm, and thickness is 300mm; Vegetable layer 11, vegetable layer selects Nutrition Soil, and thickness is 450mm, and its vegetable layer plants ciliate desert-grass.
Claims (10)
1. arsenic slag safe disposal system; it is characterized in that, comprise successively to top layer from bottom: basal layer (1), underground water guide layer (2), compacting soil protective layer (3), HDPE rete (4), geotechnological layer of cloth (5), effusion guide layer (6), arsenic slag blanket (7), exhaust level (8), impervious barrier (9), drainage blanket (10) and vegetable layer (11).
2. arsenic slag safe disposal system according to claim 1, is characterized in that, the thickness>=700mm of described compacting soil protective layer (3), hydraulic conductivity K≤1 × 10
-7m/s.
3. arsenic slag safe disposal system according to claim 1, is characterized in that, the thickness >=1.5mm of described HDPE rete (4).
4. arsenic slag safe disposal system according to claim 1, is characterized in that, the geotextiles >=600g/ ㎡ of described geotechnological layer of cloth (5).
5. arsenic slag safe disposal system according to claim 1, is characterized in that, described effusion guide layer (6) is cobble or gravel soil, and particle diameter is 16-32mm, laying depth >=300mm.
6. arsenic slag safe disposal system according to claim 1, it is characterized in that, described exhaust level (8) is cobble or porous material, and particle diameter is 32-64mm, thickness >=350mm.
7. arsenic slag safe disposal system according to claim 1, it is characterized in that, described impervious barrier (9) is clay, thickness >=200mm.
8. arsenic slag safe disposal system according to claim 1, it is characterized in that, described drainage blanket (10) is quartz sand, and particle diameter is 4-8mm, thickness >=300mm.
9. arsenic slag safe disposal system according to claim 1, is characterized in that, described vegetable layer (11) thickness >=450mm.
10. according to one of claim 1-9 described arsenic slag safe disposal system, it is characterized in that, the arsenic slag of described arsenic slag blanket (7) is the arsenic slag of pH < 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520217838.6U CN204657080U (en) | 2015-04-13 | 2015-04-13 | Arsenic slag safe disposal system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520217838.6U CN204657080U (en) | 2015-04-13 | 2015-04-13 | Arsenic slag safe disposal system |
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| CN204657080U true CN204657080U (en) | 2015-09-23 |
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| CN201520217838.6U Active CN204657080U (en) | 2015-04-13 | 2015-04-13 | Arsenic slag safe disposal system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109570183A (en) * | 2018-10-12 | 2019-04-05 | 云南省环境科学研究院(中国昆明高原湖泊国际研究中心) | A kind of method of arsenic-containing waste residue solidification and stabilization processing |
-
2015
- 2015-04-13 CN CN201520217838.6U patent/CN204657080U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109570183A (en) * | 2018-10-12 | 2019-04-05 | 云南省环境科学研究院(中国昆明高原湖泊国际研究中心) | A kind of method of arsenic-containing waste residue solidification and stabilization processing |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 410000 Hunan province Changsha hi tech Development Zone, Lu Tin Road No. 8 Building 2030 unit 5 Oaks Patentee after: Hunan Aibulu environmental Polytron Technologies Inc Address before: 410015 Hunan province Changsha labor Road No. 208 Metro landmark Valin 4A layer Patentee before: HUNAN AIRBLUER ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. |