CN101224468A - Leaching agent for repairing heavy metal cuprum polluted soil and method thereof - Google Patents
Leaching agent for repairing heavy metal cuprum polluted soil and method thereof Download PDFInfo
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- CN101224468A CN101224468A CNA2008100194001A CN200810019400A CN101224468A CN 101224468 A CN101224468 A CN 101224468A CN A2008100194001 A CNA2008100194001 A CN A2008100194001A CN 200810019400 A CN200810019400 A CN 200810019400A CN 101224468 A CN101224468 A CN 101224468A
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- soil
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- ethyl lactate
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- 239000002689 soil Substances 0.000 title claims abstract description 100
- 238000000034 method Methods 0.000 title claims abstract description 21
- 229910001385 heavy metal Inorganic materials 0.000 title claims description 56
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims description 54
- 238000002386 leaching Methods 0.000 title abstract 4
- 239000003795 chemical substances by application Substances 0.000 title description 3
- LZCLXQDLBQLTDK-UHFFFAOYSA-N ethyl 2-hydroxypropanoate Chemical compound CCOC(=O)C(C)O LZCLXQDLBQLTDK-UHFFFAOYSA-N 0.000 claims abstract description 83
- VKZRWSNIWNFCIQ-WDSKDSINSA-N (2s)-2-[2-[[(1s)-1,2-dicarboxyethyl]amino]ethylamino]butanedioic acid Chemical compound OC(=O)C[C@@H](C(O)=O)NCCN[C@H](C(O)=O)CC(O)=O VKZRWSNIWNFCIQ-WDSKDSINSA-N 0.000 claims abstract description 56
- 229940116333 ethyl lactate Drugs 0.000 claims abstract description 41
- 239000003480 eluent Substances 0.000 claims abstract description 27
- 239000010949 copper Substances 0.000 claims description 73
- 229910052802 copper Inorganic materials 0.000 claims description 39
- 238000005406 washing Methods 0.000 claims description 29
- 239000000126 substance Substances 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000012153 distilled water Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 2
- 238000005067 remediation Methods 0.000 abstract description 8
- 229910052751 metal Inorganic materials 0.000 abstract description 7
- 239000002184 metal Substances 0.000 abstract description 7
- 230000007613 environmental effect Effects 0.000 abstract description 6
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 abstract 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- 238000000605 extraction Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 11
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 10
- 239000003153 chemical reaction reagent Substances 0.000 description 10
- 150000002500 ions Chemical class 0.000 description 8
- 230000001105 regulatory effect Effects 0.000 description 8
- 239000000284 extract Substances 0.000 description 6
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical group CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 4
- 241000894007 species Species 0.000 description 4
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000010828 elution Methods 0.000 description 2
- 239000004310 lactic acid Substances 0.000 description 2
- 235000014655 lactic acid Nutrition 0.000 description 2
- 239000003446 ligand Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009418 renovation Methods 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000002738 chelating agent Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000000413 hydrolysate Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
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Abstract
The invention discloses an eluent for the remediation of metal Cu contaminated soil and a leaching method, pertaining to the field of soil environment remediation. The eluent for the remediation of metal Cu contaminated soil comprises the ethylenediaminedisuccinic acid EDDS and ethyl lactate with the wt proportion by 1: 1-25. The remediation method is that the content of metal Cu in the contaminated soil is tested primarily; the metal Cu contaminated soil is put into a leaching column; the EDDS and ethyl are mixed to form a eluent, and an eluent is prepared with the proportion between eluent and soil weight by 1-50:1; (4) the prepared eluent is leached from top to bottom into the column, the leachate is collected from the bottom of the column. The EDDS of the invention has wide source and is obtained with low cost; the EDDS consumption is reduced, and the remediation cost is lowered; both the ethyl lactate and EDDS can be bio-degenerated, thereby reducing the environmental risk after leaching remediation.
Description
Technical field
The field is administered in the soil pollution that the present invention relates in the environmental protection, the eluent composition that the repairing heavy metal in soil copper of saying so more specifically pollutes and the method for repairing heavy metal cuprum polluted soil.
Background technology
Along with the quick growth of population, the continuous expansion and the fast development of urbanization of commercial production scale, heavy metal in soil pollutes and increases the weight of day by day.Heavy metal in the contaminated soil not only can enter surface water and underground water causes water pollution by migration, has had a strong impact on environmental quality and economic sustainable development, and can be entered food chain by plant absorbing and directly threaten human beings'health.The reparation of heavy metal pollution of soil has methods such as physics, chemistry, biology, and elution method is to utilize chemistry or biological examination eluent to strengthen the mobility of heavy metal in soil, thereby heavy metal is effectively removed from soil.Usually, sour eluent and metal ligand eluent are the most effective in soil elution method restoration of soil polluted by heavy metal: strong acid such as hydrochloric acid, nitric acid can be removed the heavy metal in the soil of mining area effectively; Metal-chelator such as EDTA, NTA because itself and heavy metal have stronger mating capability, has been widely used in the drip washing reparation of heavy metal pollution of soil.But studies show that and use the restorative procedure of these traditional eluents to exist certain limitation: sour eluent is because its highly acid can also can destroy the normal physics and the chemical constitution of soil simultaneously to the toxic effect of soil microbial community; EDTA owing to be difficult to by biodegradation, in environment the holdup time longer, the heavy metal of its chelating can polluted underground water, thereby causes secondary environmental pollution.In recent years, a kind of biodegradable metal ligand [S, S]-EDDS (EDDS hereinafter is abbreviated as EDDS) is owing to its stronger chelating heavy metal ability, and the substitute as EDTA is widely used in the recovery technique of heavy metal pollution of soil.But EDDS reagent production cost is higher at present, and therefore a large amount of costs that use EDDS to be used for soil drip washing reparation are higher.(with the residual active sludge is the method for heavy-metal contaminated soil renovation agent and extracting method and its restoration of soil polluted by heavy metal of raw material to relevant patent, application number 200710072134.4, publication number CN101036917) the rehabilitation cost height that has existed at present heavy metal pollution of soil restorative procedure, easily cause shortcomings such as secondary pollution, complicated operation, the renovation agent of development of new, but just be used for the soil remediation of heavy metal slight pollution.
Summary of the invention
1. invent the technical problem that will solve
Easily cause secondary pollution but use the high problem of EDDS drip washing rehabilitation cost in a large number at what exist in the heavy-metal contaminated soil restorative procedure, the invention provides the eluent and the method for repairing heavy metal cuprum polluted soil, use it for the reparation of heavy-metal contaminated soil, can make the use amount of EDDS reduce, repairing effect is good, has reduced the environmental risk after drip washing is repaired.
2. technical scheme
The eluent of repairing heavy metal cuprum polluted soil, its composition comprises EDDS, and it also comprises ethyl lactate, and ethyl lactate is 1～25: 1 with the amount ratio of the amount of EDDS.
The eluent of above-mentioned repairing heavy metal cuprum polluted soil, ethyl lactate is 1～5: 1 with the ratio of the amount of EDDS.
The method of repairing heavy metal cuprum polluted soil: its step comprises:
(1) content of metallic copper in the mensuration contaminated soil;
(2) get the heavy metal cuprum polluted soil drip washing post of packing into;
(3) get the eluent that EDDS and ethyl lactate are formed, make that metallic copper amount of substance ratio is respectively 1～2: 1 and 1～50 in two kinds of materials and the soil: 1, by leacheate: the soil quality ratio is that 1～50: 1 usefulness distilled water is prepared leacheate;
(4) leacheate that configures is added drip washing from top to bottom in the post, collect the leachate of drip washing post below.
In the method for repairing heavy metal cuprum polluted soil in eluent and the soil amount of metallic copper amount than being ethyl lactate: EDDS: copper=effect was better in 10: 2: 1 o'clock.
3. beneficial effect
The invention provides the eluent and the method for repairing repairing heavy metal cuprum polluted soil, with respect to prior art, have the following advantages: 1. the source of the ethyl lactate in the system is wide, obtains easily, and cost is low; 2. reduced the consumption of EDDS, rehabilitation cost is lower; 3. ethyl lactate and EDDS are biodegradable material, thereby have reduced the environmental risk after the drip washing reparation.
Description of drawings
Fig. 1 is the influence (EDDS/Cu=2) of pH value to the copper polluted soil repairing effect;
Fig. 2 uses EDDS to extract the design sketch of heavy metal copper in the contaminated soil separately;
Fig. 3 is the extraction effect figure that regulates EDDS under the condition of different ethyl lactate additions;
Fig. 4 is the aspect graph of two place's Soil Copper after novel drip washing system is extracted before the heavy metal copper.
The specific embodiment
Below further specify of the present invention practicing by example
Used EDDS is an AR and 30% water-soluble in the present embodiment, and ethyl lactate is a purity greater than 99% guaranteed reagent.The additive EDDS that present embodiment is used has four dentates, and stronger chelating heavy metal ability is arranged; Ethyl lactate contains an oh group, and partial hydrolysate is lactic acid, and lactic acid has carboxyl and two functional groups of hydroxyl, and heavy metal is had the complexing adsorption capacity.The drip washing system counterweight METAL EXTRACTION that material therefore of the present invention is formed has effect preferably.
Embodiment 1: measuring heavy metal in soil copper content, is to get a certain amount of EDDS reagent at 1～6: 1 according to the content of copper by EDDS/Cu amount of substance ratio, prepares leacheate with distilled water, 0.01mol/l NaNO
3The ion concentration that solution is regulated leacheate is 0.01mol/l, and 0.1mol/l HCl and 0.1mol/l NaOH regulate drip washing system pH and be respectively 3～9.
Embodiment 2: measure heavy metal in soil copper content, according to the content of the heavy metal copper in the soil, get an amount of ethyl lactate reagent, make that ethyl lactate/Cu amount of substance ratio is 1～50: 1.Prepare leacheate with distilled water, 0.01mol/lNaNO
3The ion concentration that solution is regulated leacheate is 0.01mol/l, and 0.1mol/l HCl and 0.1mol/l NaOH regulate drip washing system pH and be respectively 3～9.
Embodiment 3: the content of measuring heavy metal in soil copper, content according to the heavy metal copper in the soil, get EDDS and ethyl lactate reagent respectively and form eluent, EDDS/ ethyl lactate amount of substance ratio wherein is 1: 1～25, according to EDDS/Cu amount of substance ratio is that 1: 1, ethyl lactate/Cu amount of substance ratio are 1～25: 1, prepare leacheate with distilled water, 0.01mol/l NaNO
3The ion concentration that solution is regulated leacheate is 0.01mol/l, and 0.1mol/l HCl and 0.1mol/lNaOH regulate drip washing system pH and be respectively 3.
Embodiment 4: the content of measuring heavy metal in soil copper, content according to the heavy metal in the soil, get EDDS and ethyl lactate reagent respectively and form eluent, EDDS/ ethyl lactate amount of substance ratio wherein is 1: 1～25, according to EDDS/Cu amount of substance ratio is that 1: 1, ethyl lactate/Cu amount of substance ratio are 1～25: 1, prepare leacheate with distilled water, 0.01mol/l NaNO
3The ion concentration that solution is regulated leacheate is 0.01mol/l, and 0.1mol/l HCl and 0.1mol/lNaOH regulate drip washing system pH and be respectively 7.
Embodiment 5: the content of measuring heavy metal in soil copper, content according to the heavy metal in the soil, get EDDS and ethyl lactate reagent respectively and form eluent, EDDS/ ethyl lactate amount of substance ratio wherein is 1: 1～25, according to EDDS/Cu amount of substance ratio is that 1: 1, ethyl lactate/Cu amount of substance ratio are 1～25: 1, prepare leacheate with distilled water, 0.01mol/l NaNO
3The ion concentration that solution is regulated leacheate is 0.01mol/l, and 0.1mol/l HCl and 0.1mol/lNaOH regulate drip washing system pH and be respectively 9.
Embodiment 6: the content of measuring heavy metal in soil copper, content according to the heavy metal in the soil, get an amount of EDDS and ethyl lactate reagent respectively, according to EDDS/Cu amount of substance ratio is that 2: 1, ethyl lactate/Cu amount of substance ratio are 1～25: 1, prepare leacheate with distilled water, 0.01mol/l NaNO
3The ion concentration that solution is regulated leacheate is 0.01mol/l, and 0.1mol/l HCl and 0.1mol/l NaOH regulate drip washing system pH and be respectively 3.
Embodiment 7: the content of measuring heavy metal in soil copper, content according to the heavy metal in the soil, get an amount of EDDS and ethyl lactate reagent respectively, according to EDDS/Cu amount of substance ratio is that 2: 1, ethyl lactate/Cu amount of substance ratio are 1～25: 1, prepare leacheate with distilled water, 0.01mol/l NaNO
3The ion concentration that solution is regulated leacheate is 0.01mol/l, and 0.1mol/l HCl and 0.1mol/l NaOH regulate drip washing system pH and be respectively 7.
Embodiment 8: the content of measuring heavy metal in soil copper, content according to the heavy metal in the soil, get an amount of EDDS and ethyl lactate reagent respectively, according to EDDS/Cu amount of substance ratio is that 2: 1, ethyl lactate/Cu amount of substance ratio are respectively 1～25: 1, dispose leacheate with distilled water, 0.01mol/l NaNO
3The ion concentration that solution is regulated leacheate is 0.01mol/l, and 0.1mol/l HCl and 0.1mol/l NaOH regulate drip washing system pH and be respectively 9.
Embodiment 9: the used soil of present embodiment is from copper mine district two place's agricultural soils, and note is made soil 1 and soil 2 respectively, all belongs to heavy metal copper severe contamination soil, gathers the soil of upper soll layer 20cm, crosses the sieve of 2mm behind the natural air drying, collects stand-by.Table 1 is the physicochemical property of soil.
Table 1 soil basic physical and chemical
| pH | Clay％ | Silt％ | Sand％ | TOC％ | Cu mg/ | |
| Soil | ||||||
| 1 |
7.8 6.9 | 6.27 8.04 | 65.36 71.54 | 28.37 20.42 | 2.70 3.30 | 1094.17 439.17 |
Get a certain amount of soil 1 and soil 2, be put in the drip washing post, add the leacheate among the embodiment 1,7,8,9 respectively after, collect the leachate in the soil column, Cu in the atomic absorption detecting leachate
2+Concentration is studied the influence of different pH values to the extraction effect of Cu in the contaminated soil, referring to Fig. 1.The result shows that extraction efficiency is good slightly under the acid condition, but pH is not remarkable to the influence that leacheate extracts the heavy metal Cu effect.Consider that this is tried the acidity condition of soil itself, the leacheate that obtains when selecting pH=7 for use is formed the leacheate as soil remediation method.
Embodiment 10: get a certain amount of soil 1 and soil 2, be put in the drip washing post, add the leacheate that pH=7 obtains among the embodiment one, collect the leachate in the soil column, Cu in the atomic absorption detecting leachate
2+Concentration is studied the extraction effect of independent EDDS to Cu in the contaminated soil, referring to Fig. 2.
Embodiment 11: fetch earth earth 1 and soil 2 are put in the drip washing post, respectively the leacheate (EDDS/Cu=1 or 2, ethyl lactate/Cu=1～25) that obtains among the embodiment 4 and 7.Cu in the atomic absorption detecting leachate
2+Concentration.Study the extraction effect of the leacheate of different eluent composition proportionings.Referring to Fig. 3.
Compare with the result of embodiment 10, just can significantly improve the effect that low concentration EDDS extracts separately during the low concentration ethyl lactate (ethyl lactate/copper mol ratio=1) that adds, and extraction efficiency in 1～25 scope is the trend of increase at ethyl lactate and copper mol ratio, but the highest about 10% increase trend, therefore consider that from rehabilitation cost control it is EDDS/Cu=2, ethyl lactate/Cu=1～25 that present embodiment is established best drip washing system combinations.
In order to detect the effect of novel drip washing system counterweight metallic prosthetic of the present invention, this drip washing system is extracted soil before and after heavy metal copper and has been done form and extract experiment when having chosen ethyl lactate/Cu=25, and contrast with form result that EDDS extracts separately, referring to Fig. 4.
According to the continuous extraction (BCR) that soil environment association of European Union proposes the form of Cu in preprosthetic soil 1 and the soil 2 is analyzed.Oxide-bonded attitude copper content is the highest in the preceding soil of extraction, accounts for 50%.Four kinds of form content are followed successively by oxide-bonded attitude copper＞combination attitude＞residual form copper＞exchangeable species copper.Wherein the copper biological effectiveness of exchangeable species and oxide-bonded attitude is higher, is easily utilized by plant absorbing.
According to the continuous extraction that soil environment association of European Union proposes the form that EDDS (EDDS/Cu=2) extracts Cu in front and back soil 1 and the soil 2 is separately analyzed.The Cu that is extracted by EDDS mainly is the copper of exchangeable species and two kinds of forms of oxide-bonded attitude, and the copper that organically combines attitude and residual form almost is not extracted out.
The continuous extraction that proposes according to soil environment association of European Union is to novel drip washing system (EDDS/Cu=2; Ethyl lactate/copper=25) form of extracting Cu in front and back soil 1 and the soil 2 is analyzed.The Cu that novel drip washing system is extracted is mainly from oxide-bonded attitude and exchangeable species, and the form after still extracting with EDDS is independent is compared, and the adding of ethyl lactate has promoted the extraction of oxide-bonded attitude copper.Simultaneously, having increased to a certain extent can not be by the content of the copper of the combination polymorphic segment of plant utilization.Therefore extract in the soil of back and can be reduced, thereby reduced the plant utilizability, reduced environmental risk by the copper content of plant utilization form.
Claims (4)
1. the eluent of a repairing heavy metal cuprum polluted soil, its composition comprises EDDS, it is characterized in that also comprising ethyl lactate, ethyl lactate is 1～25: 1 with the amount ratio of the amount of EDDS.
2. the eluent of a kind of repairing heavy metal cuprum polluted soil according to claim 1 is characterized in that the ethyl lactate and the ratio of the amount of EDDS are 1～5: 1.
3. the method for a repairing heavy metal cuprum polluted soil: its step comprises:
(1) content of metallic copper in the mensuration contaminated soil;
(2) get the heavy metal cuprum polluted soil drip washing post of packing into;
(3) get the eluent that EDDS and ethyl lactate are formed, make that metallic copper amount of substance ratio is respectively 1～2: 1 and 1～50 in two kinds of materials and the soil: 1, by leacheate: the soil quality ratio is that 1～50: 1 usefulness distilled water is prepared leacheate;
(4) leacheate that configures is added drip washing from top to bottom in the post, collect the leachate of drip washing post below.
4. the method for repairing heavy metal cuprum polluted soil according to claim 3, the amount that it is characterized in that metallic copper amount in eluent and the soil are than ethyl lactate: EDDS: copper=10: 2: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100194001A CN101224468A (en) | 2008-01-08 | 2008-01-08 | Leaching agent for repairing heavy metal cuprum polluted soil and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100194001A CN101224468A (en) | 2008-01-08 | 2008-01-08 | Leaching agent for repairing heavy metal cuprum polluted soil and method thereof |
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| CN101224468A true CN101224468A (en) | 2008-07-23 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102909215A (en) * | 2012-11-13 | 2013-02-06 | 华北电力大学 | Method for repairing soil polluted by heavy metal by combining chemical leaching and bioremediation |
| CN103706628A (en) * | 2013-12-17 | 2014-04-09 | 辽宁石油化工大学 | Chemical leaching restoration method for copper-contaminated soil |
| CN104445845A (en) * | 2014-10-31 | 2015-03-25 | 杭州师范大学 | Method for quickly relieving activity inhibition of heavy metals on anaerobic ammonia oxidation sludge |
| CN105016591A (en) * | 2015-07-20 | 2015-11-04 | 湖州吉昌丝绸有限公司 | Novel heavy metal repair agent for sludge |
| CN106085440A (en) * | 2016-05-31 | 2016-11-09 | 汪立刚 | A kind of heavy-metal contaminated soil is combined eluent |
| CN107727561A (en) * | 2017-10-11 | 2018-02-23 | 合肥学院 | A kind of agriculture and industry waste suppresses the test method of alum ore deposit hillock acidifying |
| CN110305668A (en) * | 2019-04-11 | 2019-10-08 | 苏州市宏宇环境科技股份有限公司 | Heavy metals in paddy soils eluent and preparation method thereof |
| CN114713624A (en) * | 2022-03-23 | 2022-07-08 | 华中农业大学 | Method for promoting castor bean economic crop to repair copper and cadmium composite polluted soil |
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2008
- 2008-01-08 CN CNA2008100194001A patent/CN101224468A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102909215A (en) * | 2012-11-13 | 2013-02-06 | 华北电力大学 | Method for repairing soil polluted by heavy metal by combining chemical leaching and bioremediation |
| CN102909215B (en) * | 2012-11-13 | 2014-10-01 | 华北电力大学 | Method for repairing soil polluted by heavy metal by combining chemical leaching and bioremediation |
| CN103706628A (en) * | 2013-12-17 | 2014-04-09 | 辽宁石油化工大学 | Chemical leaching restoration method for copper-contaminated soil |
| CN103706628B (en) * | 2013-12-17 | 2016-03-09 | 辽宁石油化工大学 | A kind of chemical leaching repairing method for copper polluted soil |
| CN104445845A (en) * | 2014-10-31 | 2015-03-25 | 杭州师范大学 | Method for quickly relieving activity inhibition of heavy metals on anaerobic ammonia oxidation sludge |
| CN104445845B (en) * | 2014-10-31 | 2016-05-25 | 杭州师范大学 | A kind of method that rapid recovery heavy metal suppresses Anammox sludge activity |
| CN105016591A (en) * | 2015-07-20 | 2015-11-04 | 湖州吉昌丝绸有限公司 | Novel heavy metal repair agent for sludge |
| CN106085440A (en) * | 2016-05-31 | 2016-11-09 | 汪立刚 | A kind of heavy-metal contaminated soil is combined eluent |
| CN107727561A (en) * | 2017-10-11 | 2018-02-23 | 合肥学院 | A kind of agriculture and industry waste suppresses the test method of alum ore deposit hillock acidifying |
| CN110305668A (en) * | 2019-04-11 | 2019-10-08 | 苏州市宏宇环境科技股份有限公司 | Heavy metals in paddy soils eluent and preparation method thereof |
| CN114713624A (en) * | 2022-03-23 | 2022-07-08 | 华中农业大学 | Method for promoting castor bean economic crop to repair copper and cadmium composite polluted soil |
| CN114713624B (en) * | 2022-03-23 | 2024-03-26 | 华中农业大学 | method for promoting cash crop castor to repair copper and cadmium combined polluted soil |
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