CN101088643A - Process of repairing heavy metal polluted soil with both Agricus placomyces Peck and stropharia rugosoanulata Farlow - Google Patents
Process of repairing heavy metal polluted soil with both Agricus placomyces Peck and stropharia rugosoanulata Farlow Download PDFInfo
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- CN101088643A CN101088643A CN 200710049531 CN200710049531A CN101088643A CN 101088643 A CN101088643 A CN 101088643A CN 200710049531 CN200710049531 CN 200710049531 CN 200710049531 A CN200710049531 A CN 200710049531A CN 101088643 A CN101088643 A CN 101088643A
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Abstract
The present invention relates to environment protecting technology, and is technological process of repairing heavy metal polluted soil with Agaricus placomyces Peck and Stropharia rugosoanulata Farlow. The technological process includes cultivating Agaricus placomyces Peck and Stropharia rugosoanulata Farlow in heavy metal polluted soil, collecting mature Agaricus placomyces Peck and Stropharia rugosoanulata Farlow, treating to obtain slurry containing heavy metal, and chemical electrophoresis or chelating precipitation to eliminate heavy metal ion from the slurry. The present invention utilizes Agaricus placomyces Peck and Stropharia rugosoanulata Farlow with short growth period, powerful heavy metal ion enriching capacity and other features as main biological enriching devices and other simple chemical processes, and has high heavy metal ion eliminating rate.
Description
Technical field: the invention belongs to technical field of resource environments, be specifically related to the method for dicyclo mushroom and Stropharia rugoso annulata renovation of heavy metal polluted soil with combined.
Background technology: soil is the main matter basis that the mankind depend on for existence, along with industrialization, urbanization process, heavy metal pollution of soil is serious day by day, and wherein cadmium (Cd), plumbous (Pb), chromium (Cr), mercury (Hg), arsenic (As), nickel (Ni), copper (Cu), zinc (Zn) etc. are more common heavy metal pollution.About 1.5 ten thousand tons of Hg is discharged in the whole world every year on average, and Cu is 3,400,000 tons, and Pb is 5,000,000 tons, and Mn is 1,500 ten thousand tons, and Ni is 1,000,000 tons, severe contamination environment.China is subjected to the agricultural land soil about 2500 * 10 of heavy metal pollution now
4Hectare, nearly 1,200 ten thousand tons in annual contaminated by heavy metals grain, the direct economic loss that causes is above 10,000,000,000 yuan.
The heavy metal pollution improvement of soil and the difficulty of recovering are big, and can propagate up to the people through food chain enrichment layer by layer, have a strong impact on human health.In case the capacity of dissolving of heavy metal reaches capacity, will become " time bomb " in the agricultural production.The heavy-metal contaminated soil reparation difficult problem that now become international is to realize sustainable development, improves and improves the human lives, therefore, removes heavy metal in soil effectively and pollutes and become when previous very urgent task.
The reparation of heavy-metal contaminated soil now mainly contains engineering control reparation, physical chemistry reparation, chemistry reparation, agricultural reparation and five kinds of methods of biological restoration.。Preceding four kinds of methods are more traditional improvement methods, though obtained certain effect in actual applications, exist manpower and financial resources wasteful, implement complicated, control expense is high, easily cause defective such as soil fertility reduction, be unfavorable for applying on a large scale.
Bioremediation technology is administered heavy metal pollution of soil in recent years becomes main flow, and biological restoration comprises animal reparation, phytoremediation and microorganism reparation.Wherein, phytoremediation is the emphasis and the focus of present international and domestic research, and country has given a large amount of subsidies, has obtained certain effect.The phytoremediation advantage: easily plantation, enriching quantity be big, can pull out the heavy metal in the soil; Phytoremediation shortcoming: the long (draft 1 year of plant growth cycle, woody 3-5, have a strong impact on agricultural production), (burning is an agent technology to the subsequent treatment trouble, but contaminated air), plant is not perishable again, cause existing phytoremediation technology in fact only to play an enrichment and concentrate the heavy metal-polluted soil ion, after heavy metal ion is absorbed from soil and is transported in the plant, though it is few in the soil, but heavy metal ion is not also removed from environment at all, still be present in the plant in the environment, no matter be burning or rotten, the heavy metal ion of enrichment can be got back to again in environment or the soil in the plant, the most a lot of the effects that pollution are transported to other zones.
Eighties of last century is since the seventies, from selecting environmental pollution indicators and food security angle, both domestic and external gill fungus bacterium and heavy metal relation have been carried out big quantity research, found that: the gill fungus bacterium has stronger tolerance and accumulation ability to heavy metal, and the gill fungus bacterium is by directly absorbing heavy metal floating in the air or accumulating heavy metal (Cd, Pb, Cr, Cu, Zn etc.) in the soil matrix by mycelium.
Dicyclo mushroom (Agaricus bitorpuis (Qu é l.) sacc.), Chinese another name Agaricus bitorqui, high temperature mushroom, Agaricus Campestris are subordinate to Eumycota, Basidiomycetes, Holobasidiomycetidae, Agaricales, Agaricus edibilis, Agaricus in classification.
Stropharia rugoso annulata (stropharia rugosoannulata Farlow), Chinese another name Stropharia rugoso-annulata, the ring Stropharia rugoso-annulata is subordinate to Eumycota, Hymenomycetes, Agaricales, Stropharia rugoso-annulata section, Stropharia in classification.
Wherein, dicyclo mushroom is the sibling species of two spore mushrooms of knowing of people, but than two spore mushrooms wider adaptability and resistance is arranged, so be easy to cultivate; Stropharia rugoso annulata is one of tame edible mushroom of many American-European countries, it is one of edible mushroom that artificial cultivation is the most extensive in the world, output is the highest at present, also be one of ten big mushroom classes on the international mushroom class trade market, still one of gill fungus bacterium of cultivation is recommended by FAO (Food and Agriculture Organization of the United Nation) (FAO) to developing country simultaneously.These two kinds of mushrooms all are common autochthonal straw rotting fungus.
Summary of the invention:
The objective of the invention is to overcome prior art and fail fundamentally to pull out the deficiency of the heavy metal ion in the soil, for people provide a kind of cycle short, easy to implement, and can fundamentally pull out the dicyclo mushroom of heavy metal in soil ion and the method for Stropharia rugoso annulata renovation of heavy metal polluted soil with combined.
The objective of the invention is to realize by following technical proposals:
The method of dicyclo mushroom of the present invention and Stropharia rugoso annulata renovation of heavy metal polluted soil with combined is to plant dicyclo mushroom and Stropharia rugoso annulata between mixing simultaneously on the contaminated soil, rely on two kinds of mushrooms to come heavy metal ion in the excess absorption soil as the biological concentration device, after the thalline maturation, gather thalline and through blending, homogenate, rotting, filter the mushroom slurries that obtain being rich in heavy metal ion adopts chemical electrophoresis or chelating intermediate processing with the removal of heavy metal ions in the mushroom slurries again.
Heavy metal described in the such scheme is the heavy metal of environmental pollution aspect indication, mainly is meant the significant cadmium of bio-toxicity, lead, chromium, also comprises pollutants such as heavy metal zinc with toxicity, copper.
In the such scheme, the mushroom slurries that are rich in heavy metal ion are through concentrating or without concentrating or after dilution, adopting chemical electrophoresis or chelating intermediate processing with the removal of heavy metal ions in the mushroom slurries again.
In the such scheme, chemical electrophoresis method is meant with anode and negative electrode two electric system electrolytic treatments mushroom slurries, the heavy metal ion in the mushroom slurries is reduced to metal.
In the such scheme, the chelating intermediate processing is meant the mushroom slurries after acidifying, adds chelating agent and carries out chelatropic reaction, adds precipitating reagent or flocculant again and obtains the heavy metal ion compound precipitation.
In the such scheme, the mushroom slurries after the removal heavy metal ion join in the methane-generating pit, are used for biogas fermentation.
The present inventor is by big quantity research, and the heavy metal ion in the soil will be fundamentally pulled out in discovery, must be in conjunction with biological restoration and two kinds of methods of chemical treatment; Rely on suitable biological first enrichment to concentrate the heavy metal ion of the low concentration that disperses in the soil environment earlier, after with enrichment the biological treatment of heavy metal ion become slurries, rely on methods such as chemical electrophoresis or chelating precipitation that the heavy metal ion electrolysis is gone out or be precipitated out, be only like this and from environment, pulled out out heavy metal pollution.
Past is from selecting studies show that of environmental pollution indicators and food security field: many gill fungus bacterium have stronger accumulation ability to heavy metal ion, but the no one recognizes heavy-metal contaminated soil so far, the gill fungus bacterium is exactly a high-performance bio enricher, the gill fungus bacterium is growth and energy efficiently concentrating heavy metal ion in heavy-metal contaminated soil quickly and easily, so fail this knowledge is applied to the biological restoration field of heavy-metal contaminated soil, therefore, select suitable gill fungus bacterium bacterial classification to have science original creativity and actual application value as biological concentration device restoration of soil polluted by heavy metal.
Because many biological natures of dicyclo mushroom and Stropharia rugoso annulata are close, optimum temperature as their fruitings all is about 25 ℃, need 85%～95% relative humidity of atomsphere during fruiting, optimal light intensity is about 300 luxs, it all is neutral that pH requires, all are autochthonal bacterium, field management is also simple relatively, and all heavy metal is had very strong accumulation ability.The mode of planting between taking is administered contaminated soil, compared with single cropping, more can fully utilize them separately to the ability of different heavy metal accumulations, enrichment heavy metal-polluted soil faster and more, can reach good effect to the various heavy contaminated land, so dicyclo mushroom and Stropharia rugoso annulata renovation of heavy metal polluted soil with combined are good a kind of methods.
The technology of the present invention has following advantage:
The dicyclo mushroom and the Stropharia rugoso annulata combined remediation technology of heavy-metal contaminated soil of the present invention, with dicyclo mushroom and Stropharia rugoso annulata is main biological concentration device, making full use of two kinds of mushrooms can grow under similar edaphic condition at the same time, biomass is bigger, growth cycle short (2-3 month), the field cultivation technology maturation, enriching heavy metal ion ability is strong, can adsorb the various heavy characteristics, fully utilize them separately to the ability of different heavy metal accumulations, faster and more the enrichment heavy metal-polluted soil; Planting two kinds of mushrooms of cultivation in the heavy-metal contaminated soil between a large amount of the mixing, collect ripe mushroom and make the mushroom slurries, go out or be settled out heavy metal ion by simple ripe chemical method electrolysis such as chemical electrophoresis or chelating precipitation, remove heavy metal pollution from environment fully, plough horizon heavy metal pollution average removal rate can reach 60～80%.
The specific embodiment:
The present invention is further illustrated below in conjunction with embodiment, and the present invention is not limited only to described embodiment:
Embodiment one
This example is that joint implant dicyclo mushroom comes the cadmium (Cd) in the in-situ enrichment soil, plumbous (Pb), chromium (Cr), copper (Cu), zinc metal ions such as (Zn) with Stropharia rugoso annulata on contaminated soil.
The renovation technique process: mushroom culture medium material preparation → base-material fermentation → mushroom strains preparation → fermentation base-material in soil, plant between shop fixtures → two kind of mushroom in the growth of contaminated soil (reparation of contaminated soil original position) → mushroom and enriching heavy metal → fruiting gather → enrichment the mushroom of heavy metal prepare mushroom slurries → mushroom slurries and put into the plastic material electrophoresis tank, regulate two electrode systems that pH value and electrolyte → electrophoresis tank inserts anode and negative electrode, connect D.C. regulated power supply, metal ion (the cadmium in the mushroom slurries is separated out in regulation voltage → electrolysis, plumbous, chromium, copper, zinc) → precipitating metal adheres to the mushroom slurries that become on the electrophoresis tank cathode surface after alloy → removal heavy metal ion and joins in the methane-generating pit, is used for biogas fermentation.
1. compost fermentation reactor system, sowing and bacterium:
(1), dicyclo mushroom:
Compost prescription (by 100 square metres of calculating): 2000 kilograms of wheat straws (corn stalk, straw), 1000 kilograms of cow dungs (doing), 80 kilograms in cake powder, 30 kilograms in urea, 30 kilograms in ammonium sulfate, 60 kilograms of calcium superphosphate, 50 kilograms in gypsum, 30 kilograms in calcium carbonate, 60 kilograms of pulverized limestones.
Wheat straw (corn stalk, straw) is fully moistening, and add 30 kilograms in ammonium sulfate, 60 kilograms of calcium superphosphate, 30 kilograms in calcium carbonate carries out 23 days pre-heap.With evenly adding in the compost after other auxiliary materials and mixing, carried out fermentation reactor system 12 days then.
Then, the compost of composting is placed bed surface, curved, mid portion is high 10～12 centimetres, and both sides are high 8～10 centimetres.
In the mushroom room, heat up, the material temperature is reached more than 60 ℃, kept 12～18 hours.After 18 hours, temperature is reduced to 45-52 ℃, keeps 4-5 days, finishes after fermentation.
28 ℃ of room temperatures, sowing when expecting warm 30 ℃, boll hull bacterial classification every bottle (750 milliliters) can be broadcast 0.44 square metre, and kernel culture can be broadcast 0.56 square metre for every bottle.70% bacterial classification and compost mixed seeding are adopted in sowing, and 30% is sprinkling upon compost surface, compacting gently.
After planting temperature control 26-31 ℃,, relative humidity about 70% is broadcast back about 20 days and promptly be can be used for earthing.
(2). global lid bacterium wrinkles:
Compost prescription: the pure straw of fresh, dry, not mouldy, without putrefaction.
With straw immersion 2 days, natural then draining 12～24 hours allowed its water content reach optimum humidity 70%～75% earlier.
Build when sowing heap, 20～30 centimetres of forage thickness, every square metre with 20～30 kilograms of hay amounts, sowing quantity 600～700 grams.Heap is 3 layers during the heap grass, about 8 centimetres of every bed thickness, and bacterial classification is broken into the pigeon eggs size off with the fingers and thumb, broadcasts between two-layer grass.5～8 centimetres of the degree of depth in sowing cave adopt the plum blossom program request, and the cave is apart from 10～12 centimetres.
Keep 22～28 ℃ of heap temperature, the water content of compost is 70%～75%, and airborne relative humidity is 85%～90%.Promptly can be used for earthing in after planting 30 days.
2, soil covering culture and original position reparation
With two kinds good bacterium, become between-line spacing to be seeded in the heavy-metal contaminated soil, the soil shop is sprinkled upon on the mycelia bed 2～4 centimetres of thickness.Adjust overburden layer humidity behind the earthing, keep the specific retention of soil to reach 36%～37%.
3, subsequent treatment
After planting about 2-3 month, two kinds of mushrooms go out the fructification maturation, press the general condition cultivation, about 6500 kilograms of the bright mushroom of dicyclo mushroom per mu yield, about 5000 kilograms of the bright mushroom of Stropharia rugoso annulata per mu yield.
The mushroom of gathering, blend, homogenate, rot,, filter, every kilogram is mixed bright mushroom (dicyclo mushroom and Stropharia rugoso annulata) and is diluted to 0.8 liter of mushroom slurries.
The mushroom slurries are put into the plastic material electrophoresis tank, regulate the pH value of mushroom slurries, regulate electrolyte, electrophoresis tank inserts two electrode systems of anode and negative electrode, connect D.C. regulated power supply, regulation voltage, electrolysis, cadmium, lead, chromium, copper, zinc metal ion in dicyclo mushroom and the Stropharia rugoso annulata mushroom slurries are reduced to metal and adhere on the electrophoresis tank cathode surface, obtain alloy.Dicyclo mushroom and Stropharia rugoso annulata mushroom slurries after the removal heavy metal ion join in the methane-generating pit, are used for biogas fermentation.
In this example, the dicyclo mushroom can reach 110 mg/kg to the average enriching quantity of cadmium (Cd), average enriching quantity to plumbous (Pb) can reach 140 mg/kg, average enriching quantity to chromium (Cr) can reach 45 mg/kg, average enriching quantity to copper (Cu) can reach 320 mg/kg, can reach 68 mg/kg to the average enriching quantity of zinc (Zn); Stropharia rugoso annulata can reach 65 mg/kg to the average enriching quantity of cadmium (Cd), average enriching quantity to plumbous (Pb) can reach 300 mg/kg, average enriching quantity to chromium (Cr) can reach 60 mg/kg, average enriching quantity to copper (Cu) can reach 160 mg/kg, can reach 340 mg/kg to the average enriching quantity of zinc (Zn).Adopt dicyclo mushroom and Stropharia rugoso annulata to unite and repair one mu of contaminated soil, to 520 milligrams of the average enriching quantities of cadmium, to 1205 milligrams of the average enriching quantities of lead, to 296 milligrams of the average enriching quantities of chromium, to 1440 milligrams of the average enriching quantities of copper, to 1071 milligrams of the average enriching quantities of zinc.But can extract the polluted heavy metals of soil arable layer 70～80% after the reparation.
In this example, should grow according to dicyclo mushroom and Stropharia rugoso annulata the requirement of temperature conditions is arranged season and repaired the address, be fit to south China, southwest is most of regional, generally can sow the last ten-days period month at 3-4, the 6-7 month gathers, because present embodiment is natural conditions, cultivation annually.
Embodiment two
This example is to adopt box multi-region cultivation system dystopy to pull out heavy metal (moving the soil species mushroom repairs).By collecting heavy-metal contaminated soil, carry out the earthing cultivation of dicyclo mushroom and Stropharia rugoso annulata, come the metal ions such as cadmium, lead, chromium, copper, zinc in the enrichment soil.
The renovation technique process: mushroom culture medium material preparation → base-material fermentation → mushroom strains preparation → fermentation base-material in box frame soil, plant between shop fixtures → collection heavy-metal contaminated soil layer → contaminated soil heterotopic earthing plant mushroom dicyclo mushroom and Stropharia rugoso annulata → mushroom growth and enriching heavy metal → fruiting gather → enrichment the mushroom of heavy metal prepare mushroom slurries → mushroom slurries and put into the plastic material electrophoresis tank, regulate two electrode systems that pH value and electrolyte → electrophoresis tank inserts anode and negative electrode, connect D.C. regulated power supply, metal ion (the cadmium in the mushroom slurries is separated out in regulation voltage → electrolysis, plumbous, chromium, copper, zinc) → precipitating metal adheres to the mushroom slurries that become on the electrophoresis tank cathode surface after alloy → removal heavy metal ion and joins in the methane-generating pit, is used for resigning from office and returning home of biogas fermentation → reparation back soil.
1. compost fermentation reactor system, sowing and bacterium: with embodiment one.
2. box earthing dystopy is repaired:
(1) box earthing: pipette heavy metal soil to be repaired, suitably handle, make its crumb structure better, grogs diameter 0.5-2cm is advisable.Regulate pH7.2-7.5 with limewash behind the earthing soil disinfection.Repair process is to become between-line spacing to be seeded in cultivation dicyclo mushroom and Stropharia rugoso annulata in selected plastics or wooden box frame, covers thick soil earlier, treats to cover fine earth again, gross thickness 3-3.5cm, water content 18-20% after mycelia climbs soil.
(2) management of producing mushroom: about 13 days, mycelia climbs to the fine earth middle level behind the earthing, adjusts the temperature to below 22 ℃ spray knot mushroom water, about 1kg/m
2, 2-3 days continuously, and add forced ventilation.Thereafter cut off the water 2-3 days, minimizing is ventilated and is promoted original hase differentiation and fructification to form, and will keep overburden layer moistening during the product mushroom.
3. subsequent treatment (with embodiment one)
This example adopts box multi-region cultivation system, front and back fermentation, cultural hypha, fruiting stage etc. are placed respectively in the suitableeest temperature (dicyclo mushroom and the differentiation of Stropharia rugoso annulata fructification all are 20～28 ℃ with the optimum temperature of growing), the humidity chamber, not limited by external condition, and be furnished with feeding, sowing, covering device, year cultivation number of times can be up to 5-6 time, applied range, the suitable good farmland soil of repairing local severe contamination.
Embodiment three
This example is to adopt box multi-region cultivation system dystopy to pull out heavy metal (moving the soil species mushroom repairs).By collecting heavy-metal contaminated soil, carry out the earthing cultivation of dicyclo mushroom and Stropharia rugoso annulata, come the metal ions such as cadmium, lead, chromium, copper, zinc in the enrichment soil.
This routine renovation technique is except that subsequent treatment, and all the other are with embodiment two.
This routine subsequent treatment operation is as follows:
After about 3 months, dicyclo mushroom and Stropharia rugoso annulata maturation, the mushroom of gathering blends, homogenate, rotten, filtration, and every kilogram of bright mushroom is made 0.8 liter of mushroom slurries, adds Na
2S
2O
5/ H
2SO
4After the acidifying (pH2～3), add chelating agent/NaOH (pH8～9) and carry out chelatropic reaction, add precipitating reagent or flocculant again and obtain the heavy metal ion compound precipitation.The mushroom slurries that sedimentation separation is removed behind the heavy metal ion compound precipitation join in the methane-generating pit, are used for biogas fermentation.
Claims (6)
1. the method for dicyclo mushroom and Stropharia rugoso annulata renovation of heavy metal polluted soil with combined, it is characterized in that between mixing simultaneously on the contaminated soil, planting dicyclo mushroom and Stropharia rugoso annulata, rely on two kinds of mushrooms to come heavy metal ion in the excess absorption soil as the biological concentration device, after the thalline maturation, gather thalline and through blending, homogenate, rotting, filter the mushroom slurries that obtain being rich in heavy metal ion adopts chemical electrophoresis or chelating intermediate processing with the removal of heavy metal ions in the mushroom slurries again.
2. the method for dicyclo mushroom according to claim 1 and Stropharia rugoso annulata renovation of heavy metal polluted soil with combined is characterized in that described heavy metal is the heavy metal of environmental pollution aspect indication, refers to the significant cadmium of bio-toxicity, lead, chromium, zinc or copper.
3. the method for dicyclo mushroom according to claim 1 and Stropharia rugoso annulata renovation of heavy metal polluted soil with combined, it is characterized in that the described mushroom slurries that are rich in heavy metal ion are through concentrating or without concentrating or after dilution, adopting chemical electrophoresis or chelating intermediate processing with the removal of heavy metal ions in the mushroom slurries again.
4. according to the method for claim 1 or 3 described dicyclos mushroom and Stropharia rugoso annulata renovation of heavy metal polluted soil with combined, it is characterized in that described chemical electrophoresis method is meant with anode and negative electrode two electric system electrolytic treatments mushroom slurries, is reduced to metal with the heavy metal ion in the mushroom slurries.
5. according to the method for claim 1 or 3 described dicyclos mushroom and Stropharia rugoso annulata renovation of heavy metal polluted soil with combined, it is characterized in that described chelating intermediate processing is meant that the mushroom slurries are after acidifying, add chelating agent and carry out chelatropic reaction, add precipitating reagent or flocculant again and obtain the heavy metal ion compound precipitation.
6. the method for dicyclo mushroom according to claim 1 and Stropharia rugoso annulata renovation of heavy metal polluted soil with combined is characterized in that the mushroom slurries after the described removal heavy metal ion join in the methane-generating pit, is used for biogas fermentation.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106238446A (en) * | 2016-07-01 | 2016-12-21 | 河南化工职业学院 | The method utilizing herbaceous plant catch cropping restoration of soil polluted by heavy metal |
| CN109092871A (en) * | 2018-07-31 | 2018-12-28 | 湖南省园林建设有限公司 | The method and device of bicyclic mushroom and Stropharia rugoso annulata joint repairing polluted soil |
| CN114393025A (en) * | 2022-01-19 | 2022-04-26 | 生态环境部南京环境科学研究所 | Arsenic-polluted soil remediation method based on quicklime-iron salt mixed stabilizer |
-
2007
- 2007-07-17 CN CN200710049531XA patent/CN101088643B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106238446A (en) * | 2016-07-01 | 2016-12-21 | 河南化工职业学院 | The method utilizing herbaceous plant catch cropping restoration of soil polluted by heavy metal |
| CN109092871A (en) * | 2018-07-31 | 2018-12-28 | 湖南省园林建设有限公司 | The method and device of bicyclic mushroom and Stropharia rugoso annulata joint repairing polluted soil |
| CN109092871B (en) * | 2018-07-31 | 2020-06-26 | 湖南省园林建设有限公司 | Method and device for combined remediation of polluted soil by using dicyclic mushroom and rugose cap mushroom |
| CN114393025A (en) * | 2022-01-19 | 2022-04-26 | 生态环境部南京环境科学研究所 | Arsenic-polluted soil remediation method based on quicklime-iron salt mixed stabilizer |
| CN114393025B (en) * | 2022-01-19 | 2022-11-25 | 生态环境部南京环境科学研究所 | Arsenic-polluted soil remediation method based on quicklime-iron salt mixed stabilizer |
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