CN100417630C - Spray washing method for removing heavy metal from domestic garbage compost - Google Patents
Spray washing method for removing heavy metal from domestic garbage compost Download PDFInfo
- Publication number
- CN100417630C CN100417630C CNB2006101298738A CN200610129873A CN100417630C CN 100417630 C CN100417630 C CN 100417630C CN B2006101298738 A CNB2006101298738 A CN B2006101298738A CN 200610129873 A CN200610129873 A CN 200610129873A CN 100417630 C CN100417630 C CN 100417630C
- Authority
- CN
- China
- Prior art keywords
- eluent
- compost
- las
- garbage compost
- heavy metal
- 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.)
- Expired - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
Landscapes
- Processing Of Solid Wastes (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a leaching method to remove heavy metal and restore living rubbish piling fertilizer, which allocates kinds of density of surface activator LAS, DL-malic acid, citrate single or composite leaching agent, wherein the leaching method comprises the following steps: (1) predisposing rubbish piling fertilizer; removing impurity such as plastic film, brick, stone and glass; (2) baking the fertilizer at 60-100 Deg C; removing water; drying for 2-8h; (3) placing rubbish piling fertilizer in the leakage device to collect leaching liquid; leaching the rubbish piling fertilizer; setting the weight of rubbish piling fertilizer and leaching agent at 1: 1-3; leaching for three times; collecting the leaching liquid.
Description
Technical field
The present invention relates to a kind of treatment process of producing fertilizer from refuse in daily life, particularly a kind of ELUTION METHOD of removing heavy metal reparation consumer garbage compost.
Background technology
At present, along with improving constantly of rapid development of economy and standard of living, domestic waste is just with 8% speed increase.Rubbish has become the developing thorny problem of urban society, not only society, environment is caused public hazards, and resource is caused huge waste.Current people's environmental consciousness strengthens day by day, and sustainable development understanding is deepened continuously, and garbage treatment should be walked this road of resource utilization and be accepted by increasing people.Chinese city domestic rubbish disposal problem is very urgent.Municipal wastes except that some article of simple recovery, how on the degree of depth of resource utilization and range further deeply, be the focal issue that present people pay close attention to.
Composting process is to utilize the activity of microorganism that the perishable organism in the rubbish is decomposed, be transformed into and be rich in organic and nutritive element and micro-organic fertilizers such as nitrogen, phosphorus, potassium, making rubbish realize coming and the benign cycle of back to nature circle from nature, is that economical and effective is handled and the important channel of the municipal wastes of dissolving.Contain the organic matter and the mineral element that help plant-growth in a large number in the garbage compost, if can develop, can not only solve environmental problem, and can turn waste into wealth, increase new economic benefit.
But still have harmful substances in the compost.Promptly there are the problem of various heavy combined pollution in the heavy metal and the salinity that contain a certain amount of different shape in the garbage compost.After consumer garbage compost is manured into soil, will cause that heavy metal-polluted soil and salt content increase, directly endanger plant-growth or become the potential threat.The too much heavy metal of accumulation in case enter food chain or underground water, can also cause new environmental problem in the soil.Heavy metal mainly contains copper, zinc, lead, chromium, cadmium, nickel, mercury etc. in the compost.Studies show that use that the heavy metal accumulation volume is along with the increase of compost amount of application in the soil and green vegetables behind the compost, the heavy metal content in the green vegetables also is accumulation trend.The excessive green vegetables over-ground part heavy metal concentration that makes of compost amount of application surpasses national standard.Therefore, in the reasonable application of compost, further strictness is controlled heavy metal and is accumulated in making object, especially controls edible part heavy metal concentration.So, take the whole bag of tricks to improve the quality of garbage compost, reduce the heavy metal content in the consumer garbage compost, producing fertilizer from refuse in daily life is repaired, have more important practical sense and test value fully.
Garbage compost drip washing is to utilize leacheate that the heavy metal in the garbage compost solid phase is transferred in the compost liquid phase to go, again the compost restorative procedure that the waste water that is rich in heavy metal is further recycled.The key problem in technology of this method is to seek a kind of heavy metal that can extract various forms, does not destroy the leacheate of garbage compost structure again.
At present, in heavy metal pollution of soil reparation research, the eluent of selecting for use is more, comprising organic or inorganic acid, alkali, salt and mixture.Forefathers once studied multiple eluent, such as: Beveridge etc. have studied the influence to heavy metal absorption in the clay of negatively charged ion, positively charged ion and the nonionogenic tenside of chemosynthesis, find that cats product can reduce Cu
2+, Pb
2+, Cd
2+And Zn
2+Absorption in clay.Wenzel activates the Pb in the contaminated soil with a series of sequestrants, and its strong and weak order is EDTA＞HEDTA＞DTPA＞EGTA＞EDDHA.Sequestrant not only can activate Pb, and other heavy metal such as Cu, Zn, Cd, Ni are also had very strong activation capacity.According to Blaylock etc., some artificial sequestrants such as EDTA, DTPA, EGTA, CDTA and citric acid have the effect of obvious promotion Indian mustard (Brassicajuncea) to cadmium and Plumbum absorption.But the environmental effect of repairing is strengthened in this complexing of EDTA, easily causes secondary pollution, especially phreatic potentially contaminated is threatened more and more to cause people's attention.But it is then actually rare to it is pointed out that here the research of selecting for use suitable eluent to repair compound heavy metal contamination in the garbage compost relates to content; Especially utilize LAS, DL-oxysuccinic acid, citric acid that the research report is not seen in the reparation of the heavy metal in the producing fertilizer from refuse in daily life as yet.
Summary of the invention
The objective of the invention is to overcome above-mentioned weak point, be intended to study various treatment processs to the effect that compost heavy metal Mn, Ni, Cu, Zn, Cd repair, provide a kind of and utilize tensio-active agent or remove the ELUTION METHOD that heavy metal is repaired the consumer garbage compost pollution with organic acid; Purpose with the safe and effective utilization that reaches producing fertilizer from refuse in daily life.
For achieving the above object, the technical solution adopted in the present invention is: a kind of ELUTION METHOD of removing heavy metal reparation consumer garbage compost; It is characterized in that implementation method is as follows:
The preparation eluent:
Single eluent preparation:
Preparation only contains tensio-active agent LAS, organic acid DL-oxysuccinic acid or citric acid eluent respectively, and the concentration range of every kind of solution preparation is: 10mmol/L-30mmol/L;
Compound eluent preparation:
Adopt tensio-active agent LAS to prepare eluent with organic acid DL-oxysuccinic acid or citric acid respectively;
The concentration range of the compound eluent preparation of LAS and DL-oxysuccinic acid is: the LAS concentration range is 10mmol/L-30mmol/L; DL-malic acid concentration scope is 10mmol/L-30mmol/L;
The concentration range of the compound eluent preparation of LAS and citric acid is: the LAS concentration range is 10mmol/L-30mmol/L; The citric acid concentration scope is 10mmol/L-30mmol/L;
The drip washing step:
(1) garbage compost is carried out pre-treatment, remove wherein plastics film, brick and tile, stone, glass foreign material;
(2) pretreated garbage compost is dried under 60 ℃ of-100 ℃ of conditions to remove the moisture in the compost, drying course required time scope: 2-8 hour;
(3) garbage compost is evenly placed the seepage device that to collect leacheate, use single or compound eluent respectively separately, garbage compost is carried out drip washing; Garbage compost and eluent consumption are by weight: compost: eluent=1: 1-3, and drip washing three times, and collect leacheate.
The invention has the beneficial effects as follows: select tensio-active agent LAS, organic acid DL-oxysuccinic acid for use, citric acid is single or Application of composite, great deal of experimental, confirm that they act on the heavy metal leaching effect of garbage compost separately, and attempt these tensio-active agents, sequestrant compound action in compost, for the heavy metal reparation of producing fertilizer from refuse in daily life provides foundation.Become the tensio-active agent that generally uses in the world at present owing to its validity of LAS, multifunctionality, cost performance, environment relative safety; Simultaneously, because oxysuccinic acid, citric acid are harmless, nontoxic, use in the food-processing industry of being everlasting, based on above feature, we select the eluent of preparation as garbage compost for use.
Preparation eluent and to implement drip washing technological operation technology simple among the present invention, drip washing effect highly significant effectively reduces the content of heavy metal in the consumer garbage compost, repairs consumer garbage compost, reduces and pollutes.The present invention uses conveniently, cost is low, has the economic benefit and the social benefit of highly significant, and application prospect is very extensive.
Embodiment
Embodiment 1
A kind of tensio-active agent and organic acid thereof are removed heavy metal and are repaired the ELUTION METHOD that consumer garbage compost pollutes; It is characterized in that implementation method is as follows:
The preparation eluent:
Prepare single Sodium dodecylbenzene sulfonate (LAS), DL-oxysuccinic acid, citric acid eluent respectively, every kind of solution is all by 10mmol/L, 20mmol/L, three kinds of concentration preparations of 30mmol/L;
Test materials is selected garbage compost for use, picks up from little shallow lake, Hebei District, Tianjin destructor plant.As: the garbage compost of weighing 100g is as experimental standard.The garbage compost water holding capacity is 0.755ml/g, and unit weight is 0.85g/ml, contains heavy metal element Mn, Ni, Cu, Zn in every gram garbage compost, Cd is respectively 530.57 μ g, 33.415 μ g, 238.725 μ g, 496.38 μ g, 1.9675 μ g.
The drip washing step:
(1) garbage compost is carried out pre-treatment, remove foreign material such as wherein plastics film, brick and tile, stone, glass;
(2) pretreated garbage compost is dried under 60 ℃ of-100 ℃ of conditions to remove the moisture in the compost, drying course required time scope: 2-8 hour;
(3) garbage compost is evenly placed the seepage device that to collect leacheate, use single eluent respectively separately, garbage compost is carried out drip washing; The ratio of garbage compost and eluent consumption (weight ratio) is: compost: eluent=1kg: 1.5kg perhaps is: compost: eluent=1kg: 3kg, and drip washing three times, and collect leacheate.
Measure the content of Mn, the Ni in the solution, Cu, Zn, Cd after a certain concentration drip washing simultaneously with inductive coupling plasma atomic emission spectrometer (ICP-AES); Implementation result is remarkable, referring to table 1.
Embodiment 2
Adopt LAS, DL-oxysuccinic acid;
The concentration of setting the DL-oxysuccinic acid is 20mmol/L, (set in the 10mmol/L-30mmol/L scope all can)
The concentration that changes LAS is respectively 10mmol/L, 20mmol/L, 30mmol/L;
The concentration of perhaps setting LAS is 20mmol/L, (set in the 10mmol/L-30mmol/L scope all can)
The concentration that changes the DL-oxysuccinic acid is respectively 10mmol/L, 20mmol/L, 30mmol/L.
Test materials is selected garbage compost for use, earlier garbage compost is carried out pre-treatment, and the garbage compost of weighing 100g is as experimental standard.The garbage compost water holding capacity is 0.755ml/g, and unit weight is 0.85g/ml, contains heavy metal element Mn, Ni, Cu, Zn in every gram garbage compost, Cd is respectively 530.57 μ g, 33.415 μ g, 238.725 μ g, 496.38 μ g, 1.9675 μ g.
The drip washing step:
(1) garbage compost is carried out pre-treatment, remove foreign material such as wherein plastics film, brick and tile, stone, glass;
(2) pretreated garbage compost is dried under 60 ℃ of-100 ℃ of conditions to remove the moisture in the compost, drying course required time scope: 2-8 hour;
(3) garbage compost is evenly placed the seepage device that to collect leacheate, use compound eluent respectively separately, garbage compost is carried out drip washing; The ratio of garbage compost and eluent consumption (weight ratio) is: compost: eluent=1kg: 1kg perhaps is: compost: eluent=1kg: 2.5kg, and drip washing three times, and collect leacheate.
Measure the content of Mn, the Ni in the solution, Cu, Zn, Cd after a certain concentration drip washing simultaneously with inductive coupling plasma atomic emission spectrometer (ICP-AES); Implementation result is remarkable, referring to table 2.
Embodiment 3
Adopt LAS, citric acid;
The concentration of setting citric acid is 20mmol/L, (set in the 10mmol/L-30mmol/L scope all can)
The concentration that changes LAS is respectively 10mmol/L, 20mmol/L, 30mmol/L;
The concentration of perhaps setting LAS is 20mmol/L, (set in the 10mmol/L-30mmol/L scope all can)
The concentration that changes citric acid is respectively 10mmol/L, 20mmol/L, 30mmol/L.
Test materials is selected garbage compost for use, earlier garbage compost is carried out pre-treatment, and the garbage compost of weighing 100g is as experimental standard.The garbage compost water holding capacity is 0.755ml/g, and unit weight is 0.85g/ml, contains heavy metal element Mn, Ni, Cu, Zn in every gram garbage compost, Cd is respectively 530.57 μ g, 33.415 μ g, 238.725 μ g, 496.38 μ g, 1.9675 μ g.
The drip washing step:
(1) garbage compost is carried out pre-treatment, remove foreign material such as wherein plastics film, brick and tile, stone, glass;
(2) pretreated garbage compost is dried under 60 ℃ of-100 ℃ of conditions to remove the moisture in the compost, drying course required time scope: 2-8 hour;
(3) garbage compost is evenly placed the seepage device that to collect leacheate, use compound eluent respectively separately, garbage compost is carried out drip washing; The ratio of garbage compost and eluent consumption (weight ratio) is: compost: eluent=1kg: 1kg perhaps is: compost: eluent=1kg: 3kg, and drip washing three times, and collect leacheate.
Measure the content of Mn, the Ni in the solution, Cu, Zn, Cd after a certain concentration drip washing simultaneously with inductive coupling plasma atomic emission spectrometer (ICP-AES); Implementation result is remarkable, referring to table 2.
Inventive result is analyzed:
1, tensio-active agent and sequestrant are separately to the influence of compost heavy metal wash out amount.
The independent effect of tensio-active agent and sequestrant influences measurement result to compost heavy metal wash out amount and sees Table 1.When Z was LAS when eluent, the stripping quantity of Mn, Cu increased along with the increase of LAS concentration.But the effect of LAS drip washing heavy metal Mn is not as contrast water.Have only when LAS concentration is 20mmol/L, Ni just has wash out amount.The wash out amount of Cd is at most during for 30mmol/L in LAS concentration, and be in the former garbage compost Cd content 1.25%.Because LAS is a kind of complexing agent, can form stable complex compound with Cd, reduce the concentration of Cd in the soil solution, thereby reduce the toxicity of Cd and reduce plant absorbing.
When eluent was the DL-oxysuccinic acid, the stripping quantity of Mn, Zn increased along with the increase of malic acid concentration.When malic acid concentration was 30mmol/L, the wash out amount of Mn was 87.2 times of contrast water, and the good results are evident.The drip washing effect was best when the stripping quantity of Cu was 20mmol/L at malic acid concentration, was 9.33 times of contrast water.Have only when malic acid concentration is 10mmol/L, Cd just has wash out amount.The DL-oxysuccinic acid provides part as a kind of sequestrant, forms inner complex with the heavy metal reaction.Data presentation, the chelating effect of Mn, Cu, Zn and DL-oxysuccinic acid is best.
When the leaching agent was citric acid, the wash out amount of Mn was more remarkable, was contrast 221.47 times of water, was 2.5 times of DL-oxysuccinic acid Mn wash out amount of same concentrations.The leaching effect of Zn is also apparent in view, be in the former garbage compost Zn content 2.24%.When citric acid concentration was 20mmol/L, the Cd wash out amount of the wash out amount of Cd and the LAS of 30mmol/L was suitable.
Table 1: single tensio-active agent or organic acid (sequestrant) are to the influence contrast of garbage compost heavy metal wash out amount
As eluent, from the effect of drip washing, the use of sequestrant has activated the heavy metal in the soil, has increased the movability of heavy metal in soil with tensio-active agent, sequestrant, has improved the efficient of repairing.The scientist's of Germany studies confirm that citric acid can effectively be removed the stronger metal ion of transport property in the soil, and its biodegradability is strong, does not dissolve the clay component in the soil, can be recycled simultaneously.U.S. scientist studies show that, citric acid can be removed toxic metal nearly all in soil and the rubbish and radioelement, and can efficient recovery.Use another benefit of citric acid to be that it is very little to the injury of the natural bacteria in the edatope, both survivable soil, the processing of recycle-water is also than being easier to.Draw by researching and analysing us, citric acid is relatively still apparent in view to the leaching effect of compost heavy metal.
2, tensio-active agent and sequestrant compound action are to the influence of compost heavy metal wash out amount.
Tensio-active agent and sequestrant compound action influence measurement result to compost heavy metal wash out amount and see Table 2.
In the present invention, when one timing of DL-malic acid concentration, the wash out amount of Zn increases along with the increase of LAS concentration, and the wash out amount of Ni, Cd reduces along with the increase of LAS concentration.Simultaneously, except the wash out amount of Ni, Cd and contrast water than difference little, other several elements all have largely and drench.Such as, the wash out amount of Cu be in the former garbage compost Cu content 2.48%, be LAS 9.4 times of maximum wash out amount when using separately.The wash out amount of Mn is 58.9 times of contrast water.When citric acid concentration fixedly the time, the wash out amount of Mn, Ni, Zn is more obvious.The wash out amount of Ni increases along with the increase of LAS concentration.When LAS concentration is 20mmol/L, the wash out amount of Zn be in the former garbage compost Zn content 2.90%; When LAS concentration was 10mmol/L, the wash out amount of Mn was LAS 6576 times when using separately, and the wash out amount of Cd is all compared according to the water height.
Table 2: tensio-active agent and organic acid (sequestrant) compound action is to the influence contrast of garbage compost heavy metal wash out amount
This shows that the leaching effect when the heavy metal wash out amount of LAS and the compound use of sequestrant uses than LAS is independent is obvious.And the wash out amount of LAS Mn, Ni, Zn, Cd during with the citric acid acting in conjunction is more obvious than LAS and DL-oxysuccinic acid compound tense effect.
By utilize described tensio-active agent, sequestrant as eluent separately, the mode of the heavy metal of compound action in compost, heavy metal in the garbage compost is repaired, heavy metal is separated from compost, improved the rate that reuses of compost, enlarge the scope of application of compost.By research, can draw: use the drip washing effect comparison of tensio-active agent, sequestrant heavy metal to be significantly improved according to water to draw a conclusion.Tensio-active agent is more obvious than the effect of using separately with the compound action effect of sequestrant.The eluent that different metal pairs is different, drip washing effect difference.In the independent use of sequestrant, DL-oxysuccinic acid and citric acid are best to the drip washing effect of Mn, and along with the concentration increase of eluent, the Mn that drip washing goes out in the compost increases.In tensio-active agent, sequestrant compound action, the result of extraction of Mn, Ni, Zn is the most obvious.The direction of the not only complete compound urban development environmental protection of enforcement of the present invention also efficiently solves the difficult problem of treatment of urban garbage, for the reparation of city compost and applications expanding road.
Above-mentioned detailed description of a kind of ELUTION METHOD of removing heavy metal reparation consumer garbage compost of the present invention being carried out with reference to embodiment; be illustrative rather than determinate; can exemplify out the embodiment in some limited ranges as required; therefore in the variation and the modification that do not break away under the general plotting of the present invention, should belong within protection scope of the present invention.
Claims (1)
1. remove the ELUTION METHOD that heavy metal is repaired consumer garbage compost for one kind; It is characterized in that implementation method is as follows:
The preparation eluent:
Single eluent preparation:
Preparation only contains tensio-active agent LAS, organic acid DL-oxysuccinic acid or citric acid eluent respectively, and the concentration range of every kind of solution preparation is: 10mmol/L-30mmol/L;
Compound eluent preparation:
Adopt tensio-active agent LAS to prepare eluent with organic acid DL-oxysuccinic acid or citric acid respectively;
The concentration range of the compound eluent preparation of LAS and DL-oxysuccinic acid is: the LAS concentration range is 10mmol/L-30mmol/L; DL-malic acid concentration scope is 10mmol/L-30mmol/L;
The concentration range of the compound eluent preparation of LAS and citric acid is: the LAS concentration range is 10mmol/L-30mmol/L; The citric acid concentration scope is 10mmol/L-30mmol/L;
The drip washing step:
(1) garbage compost is carried out pre-treatment, remove wherein plastics film, brick and tile, stone, glass foreign material;
(2) pretreated garbage compost is dried under 60 ℃ of-100 ℃ of conditions to remove the moisture in the compost, drying course required time scope: 2-8 hour;
(3) garbage compost is evenly placed the seepage device that to collect leacheate, use single or compound eluent respectively separately, garbage compost is carried out drip washing; Garbage compost and eluent consumption are by weight: compost: eluent=1: 1-3, and drip washing three times, and collect leacheate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101298738A CN100417630C (en) | 2006-12-05 | 2006-12-05 | Spray washing method for removing heavy metal from domestic garbage compost |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101298738A CN100417630C (en) | 2006-12-05 | 2006-12-05 | Spray washing method for removing heavy metal from domestic garbage compost |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1962562A CN1962562A (en) | 2007-05-16 |
| CN100417630C true CN100417630C (en) | 2008-09-10 |
Family
ID=38081813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101298738A Expired - Fee Related CN100417630C (en) | 2006-12-05 | 2006-12-05 | Spray washing method for removing heavy metal from domestic garbage compost |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100417630C (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101343196B (en) * | 2008-09-01 | 2011-12-28 | 天津师范大学 | Method for reducing different-grain diameter garbage compost osmotic pressure by employing leachate |
| CN101597183B (en) * | 2009-07-06 | 2011-08-10 | 天津师范大学 | Method for obtaining mineral elements from waste compost by united elution by ammonium sulfate and malic acid |
| CN101597185B (en) * | 2009-07-06 | 2011-06-15 | 天津师范大学 | Method for removing heavy metals from waste compost by united elution by ammonium sulfate and oxalic acid |
| CN101597184B (en) * | 2009-07-06 | 2011-06-15 | 天津师范大学 | Method for obtaining mineral elements from waste compost by united elution by ammonium sulfate and citric acid |
| CN101597186B (en) * | 2009-07-06 | 2011-06-15 | 天津师范大学 | Method for removing heavy metals from waste compost by united elution by ammonium sulfate and malonic acid |
| CN101885572B (en) * | 2010-06-25 | 2011-08-17 | 江苏江达生态科技有限公司 | Environmentally-friendly eluent for treating heavy metal contaminated soil and sludge |
| CN101962254B (en) * | 2010-08-10 | 2012-10-10 | 江苏江达生态科技有限公司 | Eluant for removing heavy metal from municipal sludge |
| CN102626034B (en) * | 2012-05-04 | 2013-12-11 | 天津师范大学 | Method by utilizing microorganisms and ryegrasses to collectively repair garbage compost heavy-metal seepage system |
| CN103980041A (en) * | 2014-04-21 | 2014-08-13 | 安徽科技学院 | Eluting agent for removing heavy metals in agricultural solid organic compost and removal method using the same |
| CN103949471B (en) * | 2014-05-12 | 2018-07-31 | 湖南农业大学 | A method of removing heavy metal Pb, Cd in oil crops dregs of rice cake using acylate |
| CN104841692B (en) * | 2015-05-07 | 2017-10-10 | 天津师范大学 | Application of the Tupersan in terms of reinforcing turfgrass extracts heavy metal from consumer garbage compost |
| CN107639107B (en) * | 2017-11-16 | 2019-09-20 | 中国环境科学研究院 | A kind of restorative procedure that can reduce heavy metal in soil total amount |
| CN107983768A (en) * | 2017-12-20 | 2018-05-04 | 甘肃省农业科学院土壤肥料与节水农业研究所 | A kind of heavy-metal contaminated soil mixing restorative procedure |
| CN108031704A (en) * | 2017-12-20 | 2018-05-15 | 甘肃省农业科学院土壤肥料与节水农业研究所 | A kind of heavy-metal contaminated soil repairs implantation methods |
| CN109135756A (en) * | 2018-08-02 | 2019-01-04 | 山东省农业科学院农业资源与环境研究所 | A kind of eluent and its elution recovery method for heavy-metal contaminated soil |
| CN109456092A (en) * | 2018-12-13 | 2019-03-12 | 南昌大学 | A method of with harmful heavy metal in metallic iron displacement livestock and poultry feces composting material |
| CN111346911A (en) * | 2020-03-16 | 2020-06-30 | 中国林业科学研究院亚热带林业研究所 | Phytoremediation method for comprehensive utilization of cadmium-polluted mine filter cake |
| CN113979796A (en) * | 2021-12-02 | 2022-01-28 | 塔里木大学 | Compost treatment device and method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1718787A (en) * | 2005-07-15 | 2006-01-11 | 曹国华 | Method of bulk infusion extracting nickel cobalt from low grade red soil nickel ore |
| JP2006272168A (en) * | 2005-03-29 | 2006-10-12 | Kurita Water Ind Ltd | Chlorine and heavy metal containing waste treatment method |
-
2006
- 2006-12-05 CN CNB2006101298738A patent/CN100417630C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006272168A (en) * | 2005-03-29 | 2006-10-12 | Kurita Water Ind Ltd | Chlorine and heavy metal containing waste treatment method |
| CN1718787A (en) * | 2005-07-15 | 2006-01-11 | 曹国华 | Method of bulk infusion extracting nickel cobalt from low grade red soil nickel ore |
Non-Patent Citations (6)
| Title |
|---|
| 有机酸对土壤中镉形态及其生物有效性影响的研究进展. 李仰锐，徐卫红，刘吉振，王宏信，李文一.广东微量元素科学，第12卷第4期. 2005 |
| 有机酸对土壤中镉形态及其生物有效性影响的研究进展. 李仰锐，徐卫红，刘吉振，王宏信，李文一.广东微量元素科学，第12卷第4期. 2005 * |
| 表面活性剂在土壤颗粒物上的吸附行为. 戴树桂，董亮，王臻.中国环境科学，第19卷第15期. 1999 |
| 表面活性剂在土壤颗粒物上的吸附行为. 戴树桂，董亮，王臻.中国环境科学，第19卷第15期. 1999 * |
| 重庆生活垃圾中重金属的淋溶特性的试验研究. 雷清如，覃长华，杨文君.重庆大学学报，第16卷第2期. 1993 |
| 重庆生活垃圾中重金属的淋溶特性的试验研究. 雷清如，覃长华，杨文君.重庆大学学报，第16卷第2期. 1993 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1962562A (en) | 2007-05-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100417630C (en) | Spray washing method for removing heavy metal from domestic garbage compost | |
| Delang | Causes and distribution of soil pollution in China | |
| Pichtel et al. | Conventional crops and organic amendments for Pb, Cd and Zn treatment at a severely contaminated site | |
| CN109370607A (en) | The modified production soil conditioner of gasifier slag humic acid and its soil improvement reparation application | |
| CN109601046B (en) | Humic acid repairing and greening method for slag mountain | |
| Zhou et al. | Characteristics and fertilizer effects of soil‐like materials from landfill mining | |
| CN104190698A (en) | Method for restoring clayed soil of high-load heavy metal polluted site | |
| CN103272832A (en) | Method for reinforced plant remediation of heavy metal-polluted soil | |
| CN104941993B (en) | A kind of method for comprehensive repairing in serious pollution soil | |
| CN103521512A (en) | Sepiolite-chitosan composite material capable of repairing soils containing lead and cadmium and preparation method thereof | |
| CN106216371A (en) | Nano material and with the application in rehabilitating soil cadmium pollution of plant and microbial association and method | |
| CN104194798A (en) | Organic modifier capable of passivating copper, zinc, arsenic and chromium in vegetable field soil | |
| CN106587369A (en) | PRB (permeable reactive barrier) packing for underground water heavy metal pollution, preparation method and application | |
| CN102247980A (en) | Remediation agent for leaching soil polluted by heavy metal chrome | |
| Truong et al. | The Crisis of Plastic Waste in Vietnam is Real | |
| CN107470346A (en) | A kind of in-situ remediation method of CHARACTERISTICS OF TAILINGS SAND heavy metal | |
| CN102513349B (en) | Chemical fixation-biomass improvement coupled repairing method of cadmium zinc combined polluted acidic soil | |
| CN102220135B (en) | Leaching liquid for repairing organic phenol-contaminated soil and reparation method of organic phenol-contaminated soil | |
| CN101597185B (en) | Method for removing heavy metals from waste compost by united elution by ammonium sulfate and oxalic acid | |
| CN106825011A (en) | A kind of minimizing technology of heavy metal-polluted soil Pb | |
| CN101597186B (en) | Method for removing heavy metals from waste compost by united elution by ammonium sulfate and malonic acid | |
| Niu et al. | Characteristics of heavy metal accumulation on fly ash-and sewage sludge-amended calcific soil | |
| Parsa et al. | Organic solid wastes from urban environment as iron sources for sorghum | |
| CN107030099A (en) | A kind of synchronous high-efficiency repairs the stabilizer of lead cadmium combined pollution red soil | |
| Harrington Jr | Hazardous solid waste from domestic wastewater treatment plants. |
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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080910 Termination date: 20100105 |