CN103406351A - Repairing process applicable to polluted clay - Google Patents
Repairing process applicable to polluted clay Download PDFInfo
- Publication number
- CN103406351A CN103406351A CN2013103746457A CN201310374645A CN103406351A CN 103406351 A CN103406351 A CN 103406351A CN 2013103746457 A CN2013103746457 A CN 2013103746457A CN 201310374645 A CN201310374645 A CN 201310374645A CN 103406351 A CN103406351 A CN 103406351A
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- Prior art keywords
- clay
- soil
- processing
- sieving
- pollution
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Links
- 239000004927 clay Substances 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000012545 processing Methods 0.000 claims abstract description 24
- 239000002689 soil Substances 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000012216 screening Methods 0.000 claims description 15
- 230000006641 stabilisation Effects 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 238000009418 renovation Methods 0.000 claims description 9
- 238000011105 stabilization Methods 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 3
- 239000002585 base Substances 0.000 claims description 3
- 239000011449 brick Substances 0.000 claims description 3
- 230000002950 deficient Effects 0.000 claims description 3
- 239000003344 environmental pollutant Substances 0.000 claims description 3
- 239000012634 fragment Substances 0.000 claims description 3
- 238000013467 fragmentation Methods 0.000 claims description 3
- 238000006062 fragmentation reaction Methods 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 231100000719 pollutant Toxicity 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 239000002699 waste material Substances 0.000 claims description 3
- 238000007873 sieving Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 7
- 239000002245 particle Substances 0.000 abstract description 4
- 230000001070 adhesive effect Effects 0.000 abstract 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 1
- 239000003814 drug Substances 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- 239000001257 hydrogen Substances 0.000 abstract 1
- 230000000087 stabilizing effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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Abstract
The invention relates to a repairing process applicable to polluted clay. The repairing process comprises the following steps: metering soil to be treated; adding water; adjusting a pH (Potential of Hydrogen) value, adding a (stabilized) medicine, agitating, sieving, standing and reacting, curing and safely backfilling. According to the repairing process provided by the invention, the sieving efficiency can be improved and the treating effect is improved; the sieving procedure is adjusted to be carried out after the agitating procedure. The clay has stronger caking property and adhesive property when the water content is less; when the water content is less, the distance between soil particles is closer, the molecular attraction is greater and the adhesive property is stronger. In an existing process, the time for sieving the clay is relatively long and the sieving efficiency is relatively low. After the sieving procedure is adjusted, the water is added in the processing process, along with increasing of water content, a formed water film enables the distance between the soil particles to be widened, therefore, the molecular attraction is reduced, and the caking property and the adhesive property are reduced, and furthermore, the soil particles are easy to sieve and the sieving efficiency is improved. The repairing process has the effect of uniformly mixing medicine-added soil again in a sieving process so that the treatment effect is enhanced.
Description
Technical field
The present invention relates to a kind of renovation technique that is applicable to pollute clay.
Background technology
Along with the development that workers and peasants produce and village urbanization is built, China's soil pollution rapid spread, pollution level is aggravated gradually.After from the heavy metal such as particles settling in discharge of wastewater, the applications of pesticide, oil exploitation and atmosphere and organic matter, entering into soil environment, spoiled soil is ecological, polluted underground water and agricultural product, thereby jeopardizes human health.Along with the pay attention to day by day of environmental protection, contaminated site is administered the extensive concern that has caused people.
Curing/stabilizing is the common method that contaminated site is administered, and has the advantages such as the processing time is short, applied widely.The technological process that curing/stabilizing is commonly used is: screening → dosing (stabilisation) → stir → solidify → store up.Yet this technological process also is not suitable for the clayed soil of pollution, clay has very strong adherence and caking property, while with broken scraper bowl, sieving, can adhere on appts wall and be difficult to screening, and treatment effeciency is low and treatment effect is poor.Therefore, the technological process of optimization curing/stabilizing has certain practical significance to the improvement of polluting clay.
Summary of the invention
The technical problem to be solved in the present invention is the above-mentioned defect that how to overcome prior art, and a kind of renovation technique that is applicable to pollute clay is provided.
For solving the problems of the technologies described above, the present invention is applicable to pollute the renovation technique of clay, and it comprises the following steps:
1) pending soil metering: the pending pollution clay dumper of packing into, use weight bridge weighing, after weighing, be transported to disposal field, a minute heap is disposed, and the every heap of pending pollution clay weighs 50t;
2) add water: to through step 1) add enough water in pollution clay after metering, guarantee that soil moisture content is 20%～30%;
3) regulate PH: to through step 2) add acid or alkali to regulate in pollution clay after processing, be adjusted to the required acid-base condition of stabilization agent and pollutant reaction, utilize the PH test paper to test;
4) dosing (stabilisation): to through step 3) in the pollution clay after processing, add stabilization agent, chemical feeding quantity is 3%-5%;
5) stirring: will be through step 4) clay after processing utilizes excavator to stir, and mixing time is 1h;
6) screening: utilize the broken scraper bowl of screening to through step 5) clay after processing sieve fragmentation, screens out the building wastes such as ratchel in clay, fragment of brick;
7) standing reaction: will be through step 6) the standing 12h of clay after processing and more than;
8) curing reaction: to through step 7) in the soil after processing, add curing agent, stir;
9) security landfill: will be through step 8) soil after processing detects, and detects qualified soil and carries out security landfill, the defective step 2 of returning) process extremely qualified rear security landfill.
Originally the beneficial effect that is applicable to pollute the renovation technique of clay is: the present invention can improve screening efficiency, improves treatment effect, the screening operation is adjusted to the back of agitating procedure.Clay has stronger caking property and adherence when moisture content less, water content is fewer, and the grogs distance is nearer, and molecular attraction is larger, and caking property is stronger.The existing technique screening clay time is longer, and screening efficiency is low.To sieve after operation adjusts, because of in processing procedure to add water, along with moisture increases, moisture film strengthens the distance between grogs, molecular attraction weakens, caking property and adherence reduce to be easy to screening, improve screening efficiency.In screening, dosing soil has been played to the effect again mixed, strengthened treatment effect.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, a kind of renovation technique that is applicable to pollute clay of the present invention is described further:
Fig. 1 is the schematic flow sheet of the renovation technique that originally is applicable to pollute clay.
The specific embodiment
As shown in Figure 1, the present invention is applicable to pollute the renovation technique of clay, and it comprises the following steps:
1) pending soil metering: the pending pollution clay dumper of packing into, use weight bridge weighing, after weighing, be transported to disposal field, a minute heap is disposed, and the every heap of pending pollution clay weighs 50t;
2) add water: to through step 1) add enough water in pollution clay after metering, guarantee that soil moisture content is 20%～30%;
3) regulate PH: to through step 2) add acid or alkali to regulate in pollution clay after processing, be adjusted to the required acid-base condition of stabilization agent and pollutant reaction, utilize the PH test paper to test;
4) dosing (stabilisation): to through step 3) in the pollution clay after processing, add stabilization agent, chemical feeding quantity is 3%-5%;
5) stirring: will be through step 4) clay after processing utilizes excavator to stir, and mixing time is 1h;
6) screening: utilize the broken scraper bowl of screening to through step 5) clay after processing sieve fragmentation, screens out the building wastes such as ratchel in clay, fragment of brick;
7) standing reaction: will be through step 6) the standing 12h of clay after processing and more than;
8) curing reaction: to through step 7) in the soil after processing, add curing agent, stir;
9) security landfill: will be through step 8) soil after processing detects, and detects qualified soil and carries out security landfill, the defective step 2 of returning) process extremely qualified rear security landfill.
Above-mentioned embodiment is intended to illustrate the present invention and can be professional and technical personnel in the field's realization or use; it will be apparent for those skilled in the art that above-mentioned embodiment is modified; therefore the present invention includes but be not limited to above-mentioned embodiment; any these claims or specification of meeting described; meet product and technique with principle disclosed herein and novelty, inventive features, within all falling into protection scope of the present invention.
Claims (1)
1. renovation technique that is applicable to pollute clay is characterized in that: comprise the following steps:
1) pending soil metering: the pending pollution clay dumper of packing into, use weight bridge weighing, after weighing, be transported to disposal field, a minute heap is disposed, and the every heap of pending pollution clay weighs 50t;
2) add water: to through step 1) add enough water in pollution clay after metering, guarantee that soil moisture content is 20%～30%;
3) regulate PH: to through step 2) add acid or alkali to regulate in pollution clay after processing, be adjusted to the required acid-base condition of stabilization agent and pollutant reaction, utilize the PH test paper to test;
4) dosing (stabilisation): to through step 3) in the pollution clay after processing, add stabilization agent, chemical feeding quantity is 3%-5%;
5) stirring: will be through step 4) clay after processing utilizes excavator to stir, and mixing time is 1h;
6) screening: utilize the broken scraper bowl of screening to through step 5) clay after processing sieve fragmentation, screens out the building wastes such as ratchel in clay, fragment of brick;
7) standing reaction: will be through step 6) the standing 12h of clay after processing and more than;
8) curing reaction: to through step 7) in the soil after processing, add curing agent, stir;
9) security landfill: will be through step 8) soil after processing detects, and detects qualified soil and carries out security landfill, the defective step 2 of returning) process extremely qualified rear security landfill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310374645.7A CN103406351B (en) | 2013-08-26 | 2013-08-26 | A kind of renovation technique being applicable to pollute clay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310374645.7A CN103406351B (en) | 2013-08-26 | 2013-08-26 | A kind of renovation technique being applicable to pollute clay |
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| Publication Number | Publication Date |
|---|---|
| CN103406351A true CN103406351A (en) | 2013-11-27 |
| CN103406351B CN103406351B (en) | 2016-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310374645.7A Active CN103406351B (en) | 2013-08-26 | 2013-08-26 | A kind of renovation technique being applicable to pollute clay |
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| Country | Link |
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| CN (1) | CN103406351B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104532820A (en) * | 2014-12-12 | 2015-04-22 | 中国科学院武汉岩土力学研究所 | Polluted soil in-situ solidification/stabilization treatment device |
| CN104984989A (en) * | 2014-12-23 | 2015-10-21 | 格丰科技材料有限公司 | Method for removing active heavy metals from soil |
| CN111389900A (en) * | 2020-03-27 | 2020-07-10 | 招商局生态环保科技有限公司 | Contaminated soil solidification and stabilization equipment and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102442499A (en) * | 2011-09-09 | 2012-05-09 | 盛世绍普(天津)环保科技有限公司 | Ectopic curing/stabilizing repair equipment, system and method |
| CN102921713A (en) * | 2012-10-30 | 2013-02-13 | 中国科学院武汉岩土力学研究所 | Solidification and stabilization treatment process for heavy-metal polluted soil |
| CN102950149A (en) * | 2012-05-15 | 2013-03-06 | 武汉市华鑫源环境科技有限公司 | Restoration method for organic contaminated soil |
-
2013
- 2013-08-26 CN CN201310374645.7A patent/CN103406351B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102442499A (en) * | 2011-09-09 | 2012-05-09 | 盛世绍普(天津)环保科技有限公司 | Ectopic curing/stabilizing repair equipment, system and method |
| CN102950149A (en) * | 2012-05-15 | 2013-03-06 | 武汉市华鑫源环境科技有限公司 | Restoration method for organic contaminated soil |
| CN102921713A (en) * | 2012-10-30 | 2013-02-13 | 中国科学院武汉岩土力学研究所 | Solidification and stabilization treatment process for heavy-metal polluted soil |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104532820A (en) * | 2014-12-12 | 2015-04-22 | 中国科学院武汉岩土力学研究所 | Polluted soil in-situ solidification/stabilization treatment device |
| CN104984989A (en) * | 2014-12-23 | 2015-10-21 | 格丰科技材料有限公司 | Method for removing active heavy metals from soil |
| CN111389900A (en) * | 2020-03-27 | 2020-07-10 | 招商局生态环保科技有限公司 | Contaminated soil solidification and stabilization equipment and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103406351B (en) | 2016-08-31 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Han Qingjie Inventor after: Wang Tingtao Inventor after: Guo Bei Inventor after: Ke Yan Inventor after: Jia Shijie Inventor after: Chen Feng Inventor before: Han Qingjie |
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| CB03 | Change of inventor or designer information | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170626 Address after: 266000 Shandong province Qingdao city Yanan Road No. 39 Patentee after: QINGDAO XINTIANDI ENVIRONMENTAL PROTECTION CO., LTD. Address before: Yanan City, Shandong province Qingdao City Road 266000 No. 39 Patentee before: Han Qingjie |
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| TR01 | Transfer of patent right |