CN103861867A - Elution-method soil remediation process - Google Patents
Elution-method soil remediation process Download PDFInfo
- Publication number
- CN103861867A CN103861867A CN201410055511.3A CN201410055511A CN103861867A CN 103861867 A CN103861867 A CN 103861867A CN 201410055511 A CN201410055511 A CN 201410055511A CN 103861867 A CN103861867 A CN 103861867A
- Authority
- CN
- China
- Prior art keywords
- water
- mud
- storage tank
- acid
- liquid storage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to an elution-method soil remediation process. The process comprises the steps of feeding, performing preliminary screening separation, performing fine screening separation, performing acid mixing pool oxidization, performing solid-liquid separation, reducing metal ions, precipitating metal ions, flocculating organic insoluble substances, performing precipitation separation and performing filter pressing treatment. The process has the beneficial effects of adopting preliminary screening eluting and fine screening eluting for separating heavy metal ions and other pollutants into water from soil, combining the metal ions and anions in acid through oxidization in two-stage acid mixing pool, dissolving the mixture in water, performing centrifugal separation, reducing pollutant-containing water through an alkali pool, reacting the water and hydroxyl to separate precipitates from sewage, flocculating the precipitates and settling the precipitates in a four-stage settling pond for solid-liquid separation, wherein the separated water can be recycled to be used for preliminary screening eluting and fine screening eluting, the pollutant-containing solids are discharged and then fed into a filter press for filter pressing recovery, and water, which is generated in the filter pressing process and contains a few of pollutants, is fed back to a sewage pool for treatment and separation again.
Description
Technical field
The present invention relates to contaminated soil and repair field, be specifically related to a kind of elution method soil remediation technique.
Background technology
Along with the quickening of China's rapid development of economy and urbanization, process of industrialization, China's soil and groundwater pollution problem also becomes increasingly conspicuous, especially some industrial enterprises are in process of production due to operation or miscarriage, cause a large amount of pollutants to enter into surrounding environment, cause serious pollution, metallurgy industry is a wherein important class.Great environment and health threat, often in occupation of valuable city position, can be caused when these places can be used as agricultural or commercial use in discarded chemical pollution place, thereby need to abandon contaminated soil of site to former industry and repair.
At present mainly comprise security landfill method, curing/stabilizing and phytoremediation technology etc. for the recovery technique of heavy-metal contaminated soil; wherein security landfill technology is not suitable for nature reserve area, water conservation district etc. the region of strict restriction to environmental protection, require landfill place periphery without the capacity of environment sensitive target and the landfill yard contaminated soil of enough dissolving simultaneously.Stabilisation/curing technology is only applicable to pollute relatively light soil, and the method is fixedly to reduce risks stable pollutant, but not removes; Phytoremediation technology generally can only have super accumulation capability to certain specific heavy metal, comparatively difficult to the soil that pollutant is more, in addition because the speed of plant absorption pollutant is very slow, cause repair time very long, therefore this technology is applicable to the land remediation time not have the engineering of strict restriction.
Summary of the invention
For the limitation of in prior art, contaminated soil being administered, the invention provides a kind of disposal amount large, be applicable to multiple contaminated soil, the elution method soil remediation technique that cost of disposal is moderate.
The technical scheme that the present invention takes is:
A kind of elution method soil remediation technique, comprises the following steps:
(1) feeding: contaminated soil is delivered to primary dcreening operation seperator charging aperture through conveying worm;
(2) primary dcreening operation separates: soil washes away through water under high pressure in the sieve cage of primary dcreening operation seperator, sieve cage mesh is 4 orders, foreign matter in soil separates and is expelled to mound from soil, soil is that muddy water enters into primary dcreening operation liquid storage tank from the mesh of sieve cage by high pressure water washing, circulation stirring pump in primary dcreening operation liquid storage tank stirs muddy water, fully mixes;
(3) dusting cover separates: the muddy water in primary dcreening operation seperator liquid storage tank is delivered to the charging aperture of dusting cover seperator through slush pump, on the screen cloth of mud through dusting cover seperator, again rinse through water under high pressure, screen cloth mesh is 18 orders, foreign matter in mud is expelled to mound by conveyer, mud flow in the dusting cover liquid storage tank of dusting cover seperator through the mesh of screen cloth, circulation stirring pump in dusting cover liquid storage tank stirs muddy water, fully mixes;
(4) sour stirring pool oxidation: the slime water in dusting cover liquid storage tank is delivered in sour stirring pool through slush pump, continues to stir in the acid solution that mud is 3-4 at pH value, and the anion binding in heavy metal cation and acid in muddy water is also dissolved in the water;
(5) Separation of Solid and Liquid: in the time that the mud level in sour stirring pool reaches setting value, slush pump is squeezed into mud in centrifugal separator, mud in mud is separated with water, the isolated heavy metal solution that contains is drained in cesspool, isolated mud is the soil after repairing, and is sent to mound recycles through conveying worm;
(6) reducing metal ion: in the time that liquid level in cesspool exceedes setting value, slush pump is driven into the solution in liquid storage tank in the first order alkali pond that sodium sulfite solution is housed, and is reduced to heavy metal ion at a low price after the heavy metal ion of high price and sodium sulfite react;
(7) precipitate metal ion: the solution after reduction flows into and is equipped with in the alkali pond, the second level of sodium hydroxide solution, heavy metal ion is at a low price combined with hydroxide ion and is produced sediment under alkali condition;
(8) organic insoluble matter that flocculates: alkali pond, second level solution after treatment and sediment flow in third level alkali pond, add coagulant in mixed liquor, and the insoluble matter in solution flocculates into piece.
(9) precipitate and separate: slush pump is drawn into the solid-liquid mixed liquor in third level alkali pond in sedimentation basin and precipitates, and the water on upper strata is delivered in clear water capsule and recycles through pipeline, and the sediment of lower floor is delivered in filter press through pipeline.
(10) press filtration processing: the press filtration in filter press of the sediment in sedimentation basin, in the isolated water of press filtration, comprise a small amount of heavy metal ion, in pipeline is delivered to the waste liquid liquid storage tank in step 5, circular treatment, in the solid being press-filtered out, for containing heavy metal contaminants, recycle.
Further, the acid in described step 4 is hydrochloric acid or citric acid.
Further, described sour stirring pool is divided into two-stage, in two-stage acid stirring pool, is equipped with PH meter and agitating device, and two-stage acid stirring pool is connected with respectively acid adding pump.
Further, at the bottom of the pond of described two-stage acid stirring pool, be connected with roots blower through pipeline.
Further, be equipped with PH meter and agitating device in the described first order, the second level, the 3rd alkali pond, three grades of alkali ponds are connected with respectively and add alkali pump.
Further, the coagulant in described step 8 is PAC.
Again further, the sedimentation basin that described sedimentation basin is plural serial stage.
Take after above technical scheme, beneficial effect of the present invention is:
The present invention takes primary dcreening operation drip washing, dusting cover drip washing by the heavy metal ion in soil and other pollutants with from soil, be separated in water, be oxidized soluble in water after the anion binding in metal ion and acid through two-stage acid stirring pool, through centrifugal separator, the water that contains pollutant is separated with the mud of removing pollutant again, in acid stirring pool, remain acid pH value, even if the mud of final removal heavy metal pollutant is with acid ingredient, also can follow-uply neutralize, must guarantee the removal completely of heavy metal contaminants; Water containing pollutant separates with precipitation form with hydroxyl reaction after the reduction in alkali pond from sewage, sediment enters into Separation of Solid and Liquid after level Four sedimentation basin precipitation after flocculation, isolated water can reclaim for primary dcreening operation drip washing, dusting cover drip washing, after discharging containing the solid of pollutant, send into filter press press filtration and reclaim, the water containing a small amount of pollutant producing in pressure-filtering process returns to cesspool and again processes separation.This technological design is reasonable, treatment effect, and processing cost is low, and the scope of application is wide.
Brief description of the drawings
Fig. 1 is process chart of the present invention.
Fig. 2 is the chromium content balance figure in sample and two untreated samples after 10 processing.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail:
In a slice chromium-polluted soil, in every 10 necromancers, get a sample, choose altogether 12 increments this, and label S1-S12 successively, S1, S2 are not treated, directly test chromium content, S3-S12 measures chromium surplus after the reparation of following elution method soil remediation technique:
(1) feeding: by contaminated soil through conveying worm deliver to primary dcreening operation seperator charging aperture;
(2) primary dcreening operation separates: soil washes away through water under high pressure in the sieve cage of primary dcreening operation seperator, sieve cage mesh is 4 orders, the foreign matter such as fragment of brick, stone in soil separates and is expelled to mound from soil, it is that muddy water enters into primary dcreening operation liquid storage tank from the mesh of sieve cage that soil is rinsed by water, circulation stirring pump in primary dcreening operation liquid storage tank stirs muddy water, fully mix, prevent soil precipitation;
(3) dusting cover separates: the muddy water in primary dcreening operation liquid storage tank is delivered to the charging aperture of dusting cover seperator through slush pump, through high pressure washing on the screen cloth of dusting cover seperator, filter separates mud, screen cloth mesh is 18 orders, the foreign matters such as the tiny grains of sand are expelled to mound by conveyer, mud flow in dusting cover liquid storage tank through the mesh of screen cloth, circulation stirring pump in dusting cover liquid storage tank stirs muddy water, fully mixes, and has completed the separation of uncontamination thing in soil;
(4) sour stirring pool oxidation: the slime water in dusting cover liquid storage tank is delivered in sour stirring pool through slush pump, described sour stirring pool is the sour stirring pool of 2 grades of series connection, every grade of sour stirring pool is all provided with PH meter, agitating device and acid adding pump, the hydrochloric acid or the citric acid solution that in acid stirring pool, are 3-4 for pH value, agitating device continues stirred slurry in sour stirring pool, and the anion binding in heavy metal cation and acid in mud is also dissolved in the water; In the time that PH meter detects that in sour stirring pool, acidity exceeds setting value, acid adding pump automatic powder adding adds acid solution, and the bottom of sour stirring pools at different levels is provided with aeration plate, the roots blower outside described aeration plate connection pool, in pond, produce bubble, quickening mud reacts with acid solution in sour stirring pool.
(5) Separation of Solid and Liquid: in the time that the mud level in sour stirring pool reaches setting value, slush pump is squeezed into mud in centrifugal separator, mud in mud is separated with water, and isolated heavy metal solution is drained in waste liquid liquid storage tank, and isolated mud is sent to mound through conveying worm and recycles;
(6) reducing metal ion: in the time that liquid level in waste liquid liquid storage tank exceedes setting value, slush pump is driven into the solution in liquid storage tank in the first order alkali pond that sodium sulfite solution is housed, in described first order alkali pond, be provided with agitating device, PH meter and add alkali pump, described under the stirring of agitating device the heavy metal ion of high price after reacting with sodium sulfite, be reduced to low price heavy metal ion;
(7) precipitate metal ion: the mixture after reduction reaction flows into and is equipped with in the alkali pond, the second level of sodium hydroxide solution, in alkali pond, the described second level, be provided with agitating device, PH meter and add alkali pump, described under the stirring of agitating device heavy metal ion at a low price under alkali condition, be combined with hydroxide ion and produce sediment;
(8) organic insoluble matter that flocculates: alkali pond, second level solution after treatment and sediment flow in third level alkali pond, in described third level alkali pond, be provided with agitating device, PH meter and add alkali pump, under the stirring of agitating device, in mixed liquor, add coagulant PAC, the insoluble matter in solution flocculates into piece.
(9) precipitate and separate: slush pump is drawn into the solid-liquid mixed liquor in coagulating basin continuous precipitation in the sedimentation basin of level Four series connection, and the water on upper strata is delivered in clear water capsule and recycles through pipeline, and the sediment of lower floor is delivered in filter press through pipeline.
(10) press filtration processing: the press filtration in filter press of the sediment in sedimentation basin, in the isolated water of press filtration, comprise a small amount of heavy metal ion, in pipeline is delivered to the waste liquid liquid storage tank in step 5, circular treatment, in the solid being press-filtered out, for containing heavy metal contaminants, recycle.
Chromium content balance figure after 10 processing in sample and two untreated samples is shown in accompanying drawing 2:
To sum up, front and back Chromium in Soil content situation is processed in contrast, and after drip washing is processed, Chromium in Soil content has obvious reduction, and clearance is more than 80%.
Claims (7)
1. an elution method soil remediation technique, is characterized in that, comprises the following steps:
(1) feeding: contaminated soil is delivered to primary dcreening operation seperator charging aperture through conveying worm;
(2) primary dcreening operation separates: soil washes away through water under high pressure in the sieve cage of primary dcreening operation seperator, sieve cage mesh is 4 orders, foreign matter in soil separates and is expelled to mound from soil, soil is that muddy water enters into primary dcreening operation liquid storage tank from the mesh of sieve cage by high pressure water washing, circulation stirring pump in primary dcreening operation liquid storage tank stirs muddy water, fully mixes;
(3) dusting cover separates: the muddy water in primary dcreening operation seperator liquid storage tank is delivered to the charging aperture of dusting cover seperator through slush pump, on the screen cloth of mud through dusting cover seperator, again rinse through water under high pressure, screen cloth mesh is 18 orders, foreign matter in mud is expelled to mound by conveyer, mud flow in the dusting cover liquid storage tank of dusting cover seperator through the mesh of screen cloth, circulation stirring pump in dusting cover liquid storage tank stirs muddy water, fully mixes;
(4) sour stirring pool oxidation: the slime water in dusting cover liquid storage tank is delivered in sour stirring pool through slush pump, continues to stir in the acid solution that mud is 3-4 at pH value, and the anion binding in heavy metal cation and acid in muddy water is also dissolved in the water;
(5) Separation of Solid and Liquid: in the time that the mud level in sour stirring pool reaches setting value, slush pump is squeezed into mud in centrifugal separator, mud in mud is separated with water, the isolated heavy metal solution that contains is drained in sewage, isolated mud is the soil after repairing, and is sent to mound recycles through conveying worm;
(6) reducing metal ion: in the time that liquid level in waste liquid liquid storage tank exceedes setting value, slush pump is driven into the solution in liquid storage tank in the first order alkali pond that sodium sulfite solution is housed, and is reduced to heavy metal ion at a low price after the heavy metal ion of high price and sodium sulfite react;
(7) precipitate metal ion: the solution after reduction flows into and is equipped with in the alkali pond, the second level of sodium hydroxide solution, heavy metal ion is at a low price combined with hydroxide ion and is produced sediment under alkali condition;
(8) organic insoluble matter that flocculates: alkali pond, second level solution after treatment and sediment flow in third level alkali pond, add coagulant in mixed liquor, and the insoluble matter in solution flocculates into piece;
(9) precipitate and separate: slush pump is drawn into the solid-liquid mixed liquor in third level alkali pond in sedimentation basin and precipitates, and the water on upper strata is delivered in clear water capsule and recycles through pipeline, and the sediment of lower floor is delivered in filter press through pipeline;
(10) press filtration processing: the press filtration in filter press of the sediment in sedimentation basin, in the isolated water of press filtration, comprise a small amount of heavy metal ion, in pipeline is delivered to the waste liquid liquid storage tank in step 5, circular treatment, in the solid being press-filtered out, for containing heavy metal contaminants, recycle.
2. a kind of elution method soil remediation technique according to claim 1, is characterized in that, the acid in described step 4 is hydrochloric acid or citric acid.
3. a kind of elution method soil remediation technique according to claim 1, is characterized in that, described sour stirring pool is divided into two-stage, in two-stage acid stirring pool, is equipped with PH meter and agitating device, and two-stage acid stirring pool is connected with respectively acid adding pump.
4. according to a kind of elution method soil remediation technique described in claim 1 or 3, it is characterized in that, at the bottom of the pond of described two-stage acid stirring pool, be connected with roots blower through pipeline.
5. a kind of elution method soil remediation technique according to claim 1, is characterized in that, is equipped with PH meter and agitating device in the described first order, the second level, the 3rd alkali pond, and three grades of alkali ponds are connected with respectively and add alkali pump.
6. a kind of elution method soil remediation technique according to claim 1, is characterized in that, the coagulant in described step 8 is PAC.
7. a kind of elution method soil remediation technique according to claim 1, is characterized in that the sedimentation basin that described sedimentation basin is plural serial stage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410055511.3A CN103861867B (en) | 2014-02-19 | 2014-02-19 | A kind of elution method soil remediation technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410055511.3A CN103861867B (en) | 2014-02-19 | 2014-02-19 | A kind of elution method soil remediation technique |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103861867A true CN103861867A (en) | 2014-06-18 |
| CN103861867B CN103861867B (en) | 2016-01-13 |
Family
ID=50901222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410055511.3A Expired - Fee Related CN103861867B (en) | 2014-02-19 | 2014-02-19 | A kind of elution method soil remediation technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103861867B (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104307861A (en) * | 2014-11-05 | 2015-01-28 | 北京高能时代环境技术股份有限公司 | Remediation method of heavy metal-polluted soil |
| CN104889150A (en) * | 2015-06-15 | 2015-09-09 | 武汉都市环保工程技术股份有限公司 | Technology for chemical leaching remediation of heavy metal polluted soil |
| CN104889149A (en) * | 2015-06-10 | 2015-09-09 | 中国科学院地理科学与资源研究所 | Ectopic classification leaching repair complete process of arsenic and heavy metal contaminated soil |
| CN104984992A (en) * | 2015-07-21 | 2015-10-21 | 湖南沐坤环保股份有限公司 | Filter-pressing, leaching and repairing method for heavy metal contaminated soil |
| CN105032921A (en) * | 2015-08-26 | 2015-11-11 | 湖南沐坤环保股份有限公司 | Method and system for efficient filter pressing and drip washing of contaminated soil and control method |
| CN105772497A (en) * | 2016-04-12 | 2016-07-20 | 上海格林曼环境技术有限公司 | Soil ectopic leaching restoring complete equipment |
| CN106345797A (en) * | 2016-12-02 | 2017-01-25 | 四川省核工业辐射测试防护院 | Chemical eluant for repairing cadmium polluted soil and use method of chemical eluant |
| CN106583436A (en) * | 2016-12-16 | 2017-04-26 | 亿利首建生态科技有限公司 | Leaching method for remediating hexavalent chromium contaminated soil |
| CN107214186A (en) * | 2017-08-07 | 2017-09-29 | 北京高能时代环境技术股份有限公司 | A kind of renovation technique of chromyl contaminated soil |
| CN107262519A (en) * | 2016-04-06 | 2017-10-20 | 韩电原子力燃料株式会社 | Radioactive pollution soil sanitation system |
| CN107321779A (en) * | 2017-08-18 | 2017-11-07 | 上海憬图环境工程有限公司 | A kind of organic material contaminated soil wet method prosthetic device and technique |
| CN108311538A (en) * | 2018-01-30 | 2018-07-24 | 湖南新九方科技有限公司 | A kind of elution processing method of heavy-metal contaminated soil |
| CN108480395A (en) * | 2018-05-29 | 2018-09-04 | 爱土工程环境科技有限公司 | The restorative procedure of waste residue containing vanadium and pollution of vanadium soil |
| CN108532566A (en) * | 2018-04-27 | 2018-09-14 | 申雪丽 | A kind of landscape water body cycle irrigating apparatus |
| CN110052483A (en) * | 2019-03-26 | 2019-07-26 | 山东省鲁南地质工程勘察院(山东省地勘局第二地质大队) | Dystopy wet reducing-stabilisation joint repairs chromium-polluted soil and underground water method |
| CN110624944A (en) * | 2019-09-10 | 2019-12-31 | 四川优尼柯环保科技有限公司 | Method for repairing soil polluted by landfill leachate |
| CN111085536A (en) * | 2019-12-31 | 2020-05-01 | 杭州渗源环境科技有限公司 | Soil remediation process |
| CN113351637A (en) * | 2021-06-10 | 2021-09-07 | 上海城投上境生态修复科技有限公司 | Contaminated soil leaching-grading leaching repair device and repair process |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000354845A (en) * | 1999-06-16 | 2000-12-26 | Chiyoda Corp | Method and system for treating solid containing dioxins |
| JP2001149913A (en) * | 1999-11-24 | 2001-06-05 | Shimizu Corp | Cleaning method of contaminated soil |
| JP2004261795A (en) * | 2003-02-10 | 2004-09-24 | Kankyo Eng Co Ltd | Method of removing nonvolatile contaminant in soil |
| JP2005279500A (en) * | 2004-03-30 | 2005-10-13 | Jfe Engineering Kk | Method for cleaning heavy metal polluted soil |
| CN1705525A (en) * | 2002-10-24 | 2005-12-07 | 帝人纤维株式会社 | Method for clarifying soil |
| CN101362145A (en) * | 2008-09-12 | 2009-02-11 | 中山大学 | Chemical leaching repairing method for heavy metal and arsenic mercury contaminated soil |
| CN102172614A (en) * | 2011-01-28 | 2011-09-07 | 南京市环境保护科学研究院 | Ex-situ washing remediation method for nitrochlorobenzene-contaminated soil |
| CN102601106A (en) * | 2012-03-08 | 2012-07-25 | 中国科学院过程工程研究所 | Ectopic leaching restoring device and restoring method for chromic slag polluted soil |
-
2014
- 2014-02-19 CN CN201410055511.3A patent/CN103861867B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000354845A (en) * | 1999-06-16 | 2000-12-26 | Chiyoda Corp | Method and system for treating solid containing dioxins |
| JP2001149913A (en) * | 1999-11-24 | 2001-06-05 | Shimizu Corp | Cleaning method of contaminated soil |
| CN1705525A (en) * | 2002-10-24 | 2005-12-07 | 帝人纤维株式会社 | Method for clarifying soil |
| JP2004261795A (en) * | 2003-02-10 | 2004-09-24 | Kankyo Eng Co Ltd | Method of removing nonvolatile contaminant in soil |
| JP2005279500A (en) * | 2004-03-30 | 2005-10-13 | Jfe Engineering Kk | Method for cleaning heavy metal polluted soil |
| CN101362145A (en) * | 2008-09-12 | 2009-02-11 | 中山大学 | Chemical leaching repairing method for heavy metal and arsenic mercury contaminated soil |
| CN102172614A (en) * | 2011-01-28 | 2011-09-07 | 南京市环境保护科学研究院 | Ex-situ washing remediation method for nitrochlorobenzene-contaminated soil |
| CN102601106A (en) * | 2012-03-08 | 2012-07-25 | 中国科学院过程工程研究所 | Ectopic leaching restoring device and restoring method for chromic slag polluted soil |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104307861A (en) * | 2014-11-05 | 2015-01-28 | 北京高能时代环境技术股份有限公司 | Remediation method of heavy metal-polluted soil |
| CN104889149A (en) * | 2015-06-10 | 2015-09-09 | 中国科学院地理科学与资源研究所 | Ectopic classification leaching repair complete process of arsenic and heavy metal contaminated soil |
| CN104889150A (en) * | 2015-06-15 | 2015-09-09 | 武汉都市环保工程技术股份有限公司 | Technology for chemical leaching remediation of heavy metal polluted soil |
| CN104889150B (en) * | 2015-06-15 | 2018-03-06 | 武汉都市环保工程技术股份有限公司 | The chemical leaching renovation technique of heavy-metal contaminated soil |
| CN104984992A (en) * | 2015-07-21 | 2015-10-21 | 湖南沐坤环保股份有限公司 | Filter-pressing, leaching and repairing method for heavy metal contaminated soil |
| CN105032921A (en) * | 2015-08-26 | 2015-11-11 | 湖南沐坤环保股份有限公司 | Method and system for efficient filter pressing and drip washing of contaminated soil and control method |
| CN107262519A (en) * | 2016-04-06 | 2017-10-20 | 韩电原子力燃料株式会社 | Radioactive pollution soil sanitation system |
| CN105772497B (en) * | 2016-04-12 | 2019-07-30 | 上海格林曼环境技术有限公司 | A kind of soil heterotopic elution reparation complete set of equipments |
| CN105772497A (en) * | 2016-04-12 | 2016-07-20 | 上海格林曼环境技术有限公司 | Soil ectopic leaching restoring complete equipment |
| CN106345797A (en) * | 2016-12-02 | 2017-01-25 | 四川省核工业辐射测试防护院 | Chemical eluant for repairing cadmium polluted soil and use method of chemical eluant |
| CN106583436A (en) * | 2016-12-16 | 2017-04-26 | 亿利首建生态科技有限公司 | Leaching method for remediating hexavalent chromium contaminated soil |
| CN107214186A (en) * | 2017-08-07 | 2017-09-29 | 北京高能时代环境技术股份有限公司 | A kind of renovation technique of chromyl contaminated soil |
| CN107321779A (en) * | 2017-08-18 | 2017-11-07 | 上海憬图环境工程有限公司 | A kind of organic material contaminated soil wet method prosthetic device and technique |
| CN108311538A (en) * | 2018-01-30 | 2018-07-24 | 湖南新九方科技有限公司 | A kind of elution processing method of heavy-metal contaminated soil |
| CN108532566A (en) * | 2018-04-27 | 2018-09-14 | 申雪丽 | A kind of landscape water body cycle irrigating apparatus |
| CN108532566B (en) * | 2018-04-27 | 2020-11-17 | 江苏杭鼎建设工程有限公司 | Landscape water body circulation water conservancy device |
| CN108480395A (en) * | 2018-05-29 | 2018-09-04 | 爱土工程环境科技有限公司 | The restorative procedure of waste residue containing vanadium and pollution of vanadium soil |
| CN110052483A (en) * | 2019-03-26 | 2019-07-26 | 山东省鲁南地质工程勘察院(山东省地勘局第二地质大队) | Dystopy wet reducing-stabilisation joint repairs chromium-polluted soil and underground water method |
| CN110624944A (en) * | 2019-09-10 | 2019-12-31 | 四川优尼柯环保科技有限公司 | Method for repairing soil polluted by landfill leachate |
| CN111085536A (en) * | 2019-12-31 | 2020-05-01 | 杭州渗源环境科技有限公司 | Soil remediation process |
| CN113351637A (en) * | 2021-06-10 | 2021-09-07 | 上海城投上境生态修复科技有限公司 | Contaminated soil leaching-grading leaching repair device and repair process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103861867B (en) | 2016-01-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103861867B (en) | A kind of elution method soil remediation technique | |
| CN103316907B (en) | Heavy-metal-polluted site soil leaching remediation method and device | |
| CN105772497B (en) | A kind of soil heterotopic elution reparation complete set of equipments | |
| CN105057340A (en) | Chromium-contaminated soil different-position leaching repairing technology and device | |
| CN103857631A (en) | Method for treating industrial waste | |
| CN106583436A (en) | Leaching method for remediating hexavalent chromium contaminated soil | |
| CN106007074A (en) | Lead-zinc smelting wastewater treatment method | |
| CN105598147A (en) | Soil washing device and washing method thereof | |
| CN106045257A (en) | Sediment combination treatment technology | |
| CN104190701A (en) | Leaching method for remediation of arsenic polluted soil by using magnetic separation | |
| CN103316903A (en) | Method for repairing heavy metal polluted soil by chemical combined leaching | |
| CN206215660U (en) | A kind of chromium-polluted soil dystopy sorting cleaning prosthetic device | |
| CN102099129A (en) | Method for removing inorganic contaminants from soils via a physicochemical extraction technique | |
| CN104986906B (en) | A kind of processing method of dangerous waste percolate | |
| CN204974702U (en) | Chromium -contaminated soil dystopy drip washing prosthetic devices | |
| JP2009072769A (en) | Sewage treatment system | |
| CN103831293A (en) | Complete equipment for soil remediation by leaching method | |
| CN203750981U (en) | Complete equipment for soil remediation by adopting elution method | |
| CN104370432B (en) | A kind of sewage treatment process for reducing flocculant usage | |
| JP2004089954A (en) | Method for removing arsenic and the like from mud or soil contaminated therewith | |
| CN104862495A (en) | Clean production method for gold extraction by cyanidation | |
| CN214683482U (en) | Pollute soil drip washing and sewage treatment system that integrates | |
| CN114644423A (en) | Magnetic core flocculation treatment process for tailing wastewater | |
| US9388061B2 (en) | Metalloid contaminated water solution purification process for safe human consumption-rated reduction of contaminant concentration therein, by precipitation without oxidation | |
| JP6425170B2 (en) | Muddy water treatment system and muddy water treatment method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160113 Termination date: 20200219 |