CN103464101B - A kind of method of repairing the plant giantreed recycling of heavy-metal contaminated soil - Google Patents
A kind of method of repairing the plant giantreed recycling of heavy-metal contaminated soil Download PDFInfo
- Publication number
- CN103464101B CN103464101B CN201310406581.4A CN201310406581A CN103464101B CN 103464101 B CN103464101 B CN 103464101B CN 201310406581 A CN201310406581 A CN 201310406581A CN 103464101 B CN103464101 B CN 103464101B
- Authority
- CN
- China
- Prior art keywords
- giantreed
- charcoal
- heavy
- heavy metal
- 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.)
- Active
Links
Abstract
The invention discloses a kind of method of repairing the plant giantreed recycling of heavy-metal contaminated soil.By air-dry, broken for heavy metal polluted soil repairing plant giantreed cutting, under control oxygen ambient conditions, add catalytic modification agent, after 200-800 DEG C of calcining 0.5-4h, cooling, obtains charcoal, giantreed charcoal productive rate 25%-75%.Utilize heavy metal and compound thereof in giantreed charcoal adsorption fouling soil, waste water or waste gas, adsorption capacity reaches 0.4-6.0mg/g; Can be used as energy source raw material or reducing agent to return smelter and realize comprehensive utilization simultaneously.The present invention is polluted soil repairing plant biomass recycling use, solve its potential secondary pollution problem provides through engineering approaches approach.
Description
Technical field
The present invention relates to reclamation of solid wastes field of comprehensive utilization.Particularly, the present invention relates to a kind of biomass-making of the rehabilitation plant giantreed that heavy-metal contaminated soil is gathered in the crops that utilizes for charcoal, carry out heavy metal in adsorption fouling soil, waste water or waste gas, as the method relating to heavy enterprise energy material or reducing agent with charcoal simultaneously.
Background technology
Giantreed is the perennial grass being extensively distributed in south China area, and fast growth, biomass are large.Giantreed living beings contain a large amount of celluloses and lignin, have higher combustion heat value.Giantreed living beings most of component after calcining is charcoal.The research such as Yang Haiping shows that the precipitation of material volatile matter in biomass carbon preparation process mainly concentrates on 300-600 DEG C; At high temperature (>800 DEG C) biomass carbon is mainly containing carbon and a small amount of oxygen, does not almost have protium to remain.Biomass carbon has flourishing pore structure and abundant surface group, makes its heavy metal and organic matter (especially heavy metal) all have good removal effect, and stablizes and anticorrosively not easily to decompose, and is a kind of desirable adsorbent.Simultaneously, charcoal or a kind of reducing agent preferably, the reports such as Wang Yongbin, biomass reduction magnetization limonite effect is compared with brown coal reduction magnetization limonite, the reduction magnetization effect of living beings is better, and reduction temperature can reduce by more than 100 DEG C (being down to about 650 DEG C).
Giantreed impoverishment tolerant, resistance to drought and waterlogging, have the advantages such as strong stress resistance.The tolerance of giantreed heavy metal and enrichment performance have had relevant research report both at home and abroad.Papazoglou research shows, giantreed is at 973.8mg kg
– 1cd and 2543.3mg kg
– 1good tolerance is shown when growing in the soil of Ni.Mirza research shows, giantreed can be 600 μ g L in As concentration
– 1normal growth in nutrient solution, shows good tolerance and cumulative bad.The research such as Han Zhiping shows, giantreed is 100mgkg in concentration respectively
-1cu
2+, Ni
2+, Cd
2+, Pb
2+, Zn
2+, Hg
2+and 50mgkg
-1following Cr
6+all normally can survive in 7 kinds of contaminated environment, show the tolerance stronger to single high-load Heavy-metal Polluted Environment; At 105mg kg
– 1cu, 103mg kg
– 1ni, 55mg kg
– 1also all can normal growth under Cr affects separately.The research such as Guo Chaohui shows, at As53.2, Cd31.9, Pb728.4, Zn968mg kg
– 1the giantreed overground part year biomass of multiple metal grown on soil reach 3000kg/ mu, and As, Cd, Pb and Zn in soil can be absorbed, have certain repair to contaminated soil.Above-mentioned research shows, the rehabilitation plant that giantreed can be used as heavy-metal contaminated soil carries out contaminated soil remediation application.But, containing a certain amount of heavy metal in the giantreed cutting after reparation, as unreasonable disposal then may cause the secondary pollution of heavy metal.But consideration does not contain the living beings such as the giantreed of the heavy metal problem how safety comprehensive utilizes in currently available technology.The present invention is intended to utilize heavy metal pollution giantreed to prepare charcoal, and continue on for charcoal reducing bio-available Zn concentration in contaminated soil, process containing the waste water of heavy metal or waste gas, final Song Shechong enterprise, as biomass energy or reducing agent, reaches the object of the treatment of wastes with processes of wastes against one another, comprehensive utilization.
Summary of the invention
The present invention is to effectively utilize the giantreed living beings of repairing heavy-metal contaminated soil, charcoal is produced as raw material, for reducing Heavy Metals in Contaminated Soils bio-available Zn concentration, process the waste water or waste gas that contain heavy metal, final Song Shechong enterprise, as biomass energy or reducing agent, reaches the object of the treatment of wastes with processes of wastes against one another, comprehensive utilization.
Repaired a method for the plant giantreed recycling of heavy-metal contaminated soil, comprised the following steps:
1) giantreed of repairing heavy-metal contaminated soil is cradled, air-dry, broken;
2) giantreed powder after fragmentation adds catalytic modification materials of one or both combinations in the molysite of 0.5wt%-5wt%, aluminium salt, calcium salt, sodium salt, calcines, calcining heat 200-800 DEG C, calcination time 0.5-4h in the calcining furnace controlling oxygen atmosphere; In calcination process, adopt negative pressure system condensation to reclaim volatile matter realize charcoal end de-oiling, or according to the mass ratio of 1:5-10, de-oiling is washed with alcohol mix and blend in charcoal end after calcining cooling; Charcoal end briquet group or excellent bar, obtain charcoal;
3) adopt heavy metal and compound thereof in charcoal adsorption fouling soil, waste water or waste gas, Heavy Metals in Contaminated Soils bio-available Zn concentration is significantly reduced, purifies liquid waste or waste gas;
4) by step 2) charcoal that obtains or will adsorb the charcoal of heavy metal and compound thereof in contaminated soil, waste water or waste gas in step 3), send non-ferrous metal metallurgy Enterprise Integrated to utilize as energy and material or reducing agent.
Described heavy metal comprise in As, Cd, Cr, Cu, Hg, Ni, Pb, Zn one or more.
Fragmentation described in step 1) adopts broken facility that air-dry giantreed cutting is broken into the rod-short fritter of below 1-2cm or Powdered thing.
Step 2) described in catalytic modification material, be first mixed with solution or emulsion, before calcination or calcining time be sprayed at equably on giantreed powder.
Step 2) described in control oxygen atmosphere be that to control calcining furnace be anoxic or close to anaerobic atmosphere.(calcining furnace such as Muffle furnace, tube furnace, elevator furnace adopting logical nitrogen, argon gas or the reacting furnace entered through specialized designs, controllable oxygen, controlling calcining furnace is anoxic or close to anaerobic atmosphere.）
Adopt said method, charcoal productive rate is generally at 25%-75%.
Adopt said method, in charcoal adsorption fouling soil, waste water or waste gas, the adsorption capacity of heavy metal and compound thereof can reach 0.4-6.0mg/g.
The shaping measure adopted in said method, adopts common press compressed to slugs to roll into a ball or stub bar exactly by biomass carbon powder.
Technique effect
The present invention is that after solving the reparation of heavy-metal contaminated soil engineering, the recycling of large giantreed cutting proposes practicable Engineering Approach.First the living beings containing heavy metals such as a small amount of As, Cd, Pb, Zn are passed through control oxygen atmosphere and add catalytic modification material, obtain the charcoal containing a small amount of heavy metal at lower calcining temperatures and be used for adsorption fouling heavy metal in soil, preventing the diffusion of heavy metal contaminants; Adsorb low-concentration heavy metal and compound in waste water or waste gas, realize the deep purifying of waste water or waste gas; Deliver to metallurgical technology as energy source raw material, thermal source is provided, or create reducing atmosphere or direct-reduction metal oxide as reducing agent, have effectively achieved the comprehensive utilization containing heavy metal biological matter.
The present invention adds catalytic modification material in containing the giantreed living beings calcination process of heavy metal, productive rate and surface-active functional group's quantity thereof of giantreed charcoal can be significantly improved, improve charcoal adsorption capacity, reduce the leaching rate of heavy metal in giantreed charcoal after excessive mistake in calcination process of heavy metal in giantreed and calcining, efficiently solve the potential secondary pollution problem that the giantreed charcoal containing heavy metal exists in comprehensive utilization process.
The present invention carries out deoiling treatment to the charcoal prepared, its adsorption capacity can be improved further, be used for the adsorption effect of heavy metal and compound in efficient adsorption contaminated soil, waste water or waste gas, Heavy Metals in Contaminated Soils bio-available Zn concentration is significantly reduced, and in waste water or waste gas, heavy metal reaches discharge standard requirement after adsorption cleaning.
Accompanying drawing explanation
Fig. 1 is present invention process flow chart;
Fig. 2 is the SEM photo of charcoal of the present invention;
(a) unwashed charcoal; (b) charcoal after ethanol wash;
Fig. 3 giantreed charcoal is to the adsorption effect of As, Cd, Pb in waste water.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described, and unrestricted the present invention.
Embodiment 1: utilize the plant giantreed of repairing heavy-metal contaminated soil to prepare charcoal
From heavy metal pollution place soil results containing the giantreed aerial part of heavy metal, after being cleaned by running water and deionized water successively by cutting, cut into 1-2cm fritter, in 105 DEG C of 30min that complete, oven dry at 60 DEG C.The giantreed fritter of oven dry is put into tubular type elevator furnace; spray into the sodium hydroxide solution of 1mol/L simultaneously; NaOH is made to account for the 0.5wt% of giantreed powder; heat under nitrogen protection; control calcining heat 300 DEG C calcining 2h; after cooling, be crushed to below 20 orders, obtain the giantreed charcoal containing heavy metal.Under this calcination condition, giantreed charcoal productive rate is about 55%, and charcoal calorific value reaches 29.53kJ/g.The charcoal surface of above-mentioned preparation has a large amount of hole and oil droplet (Fig. 2 a); After ethanol wash 30min, charcoal surface oil droplet disappears, and occurs a large amount of hole (Fig. 2 b); Cleared up by charcoal concentrated acid, measure wherein heavy metal, in charcoal, As, Cd, Pb, Zn equal size is followed successively by 16-33,0.9-15,21-80,106-263mg/kg, shows in this charcoal containing a certain amount of heavy metal.Meanwhile, select in giantreed that uncontaminated soil is gathered in the crops tubular type elevator furnace under nitrogen protection and calcine, calcining heat 300 DEG C, calcination time 2h, prepares untainted giantreed charcoal.Under this calcination condition, untainted giantreed charcoal productive rate is about 35%, and in charcoal, As, Cd, Pb, Zn equal size is followed successively by 0.21-7.26,0.03-0.50,0.22-3.62,15-96.66mg/kg.In charcoal prepared by the plant giantreed cutting showing to repair heavy-metal contaminated soil, content of beary metal significantly improves.
Embodiment 2: containing the toxicity characteristic leaching procedure of the giantreed charcoal of heavy metal
The giantreed charcoal utilizing embodiment 1 to prepare carries out toxicity leaching experiment.Leaching experiment is with reference to " solid waste Leaching leaching method horizontal vibration method (HJ557-2010) " method, water logging and acidleach is adopted to carry out toxicity characteristic leaching procedure: to get in 20mL deionized water, pH is regulated to be 2.5 and 5.5, add the giantreed charcoal of 0.2g containing heavy metal again, vibrate after 24h in water bath with thermostatic control vibration case under room temperature, centrifugal filtration, measures the content of As, Cd, Pb, Zn in supernatant.Meanwhile, do blank test (not adding charcoal) and carry out Elimination test error.As can be seen from Table 1, in untainted giantreed charcoal leachate, content of beary metal is extremely low; Containing the giantreed charcoal of heavy metal, in leachate under neutral and acid condition, As, Cd, Pb, Zn concentration, can the adsorption treatment of safety applications heavy metal in contaminated soil, waste water and waste gas also far below Leaching standard authenticating value (GB5085.3-2007).
As, Cd, Pb, Zn concentration in table 1 giantreed charcoal leachate
*in Leaching standard authenticating value (GB5085.3-2007), heavy metal authenticating value is all with its total amount." ND " expression does not detect.
Embodiment 3: containing the Adsorption Capacity Test of the giantreed charcoal of heavy metal
The giantreed charcoal (raw material is the giantreed containing heavy metal from heavy metal pollution place soil results) utilizing embodiment 1 to prepare carries out heavy metal adsorption test in simulated wastewater.Test operation process is as follows: compound concentration gradient is the series analog waste water containing As, Cd, Pb of 5mg/L, 10mg/L, 25mg/L, 50mg/L.In 20ml simulated wastewater, add 0.2g charcoal, then at room temperature vibrate 24h, measures the rear heavy metal ions concentration in solution of absorption, utilizes solution concentration difference to calculate charcoal to the suction-operated of As, Cd, Pb in waste water.Experimental result shows (Fig. 3), and giantreed charcoal has certain suction-operated to waste water A s, Cd, Pb, and suction-operated increases with the increase of As, Cd, Pb concentration in waste water.In trial stretch, its adsorbance reaches 4.08 respectively, 1.30,0.86mg/g.
Claims (5)
1. repaired a method for the plant giantreed recycling of heavy-metal contaminated soil, and it is characterized in that, comprise the following steps:
1) giantreed of repairing heavy-metal contaminated soil is cradled, air-dry, broken;
2) giantreed powder after fragmentation adds catalytic modification materials of one or both combinations in the molysite of 0.5wt%-5wt%, aluminium salt, calcium salt, sodium salt, calcines, calcining heat 200-800 DEG C, calcination time 0.5-4h in the calcining furnace controlling oxygen atmosphere; In calcination process, adopt negative pressure system condensation to reclaim volatile matter realize charcoal end de-oiling, or according to the mass ratio of 1:5-10, de-oiling is washed with alcohol mix and blend in charcoal end after calcining cooling; Charcoal end briquet group or excellent bar, obtain charcoal;
3) adopt heavy metal and compound thereof in charcoal adsorption fouling soil, waste water or waste gas, Heavy Metals in Contaminated Soils bio-available Zn concentration is significantly reduced, purifies liquid waste or waste gas;
4) by step 2) charcoal that obtains or will adsorb the charcoal of heavy metal and compound thereof in contaminated soil, waste water or waste gas in step 3), send non-ferrous metal metallurgy Enterprise Integrated to utilize as energy and material or reducing agent.
2. method according to claim 1, is characterized in that, described heavy metal comprise in As, Cd, Cr, Cu, Hg, Ni, Pb, Zn one or more.
3. method according to claim 1, is characterized in that, the fragmentation described in step 1) adopts broken facility that air-dry giantreed cutting is broken into the rod-short fritter of below 1-2cm or Powdered thing.
4. method according to claim 1, is characterized in that, step 2) described in catalytic modification material, be first mixed with solution or emulsion, before calcination or calcining time be sprayed at equably on giantreed powder.
5. method according to claim 1, is characterized in that, step 2) described in control oxygen atmosphere be that to control calcining furnace be anoxic or close to anaerobic atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310406581.4A CN103464101B (en) | 2013-09-09 | 2013-09-09 | A kind of method of repairing the plant giantreed recycling of heavy-metal contaminated soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310406581.4A CN103464101B (en) | 2013-09-09 | 2013-09-09 | A kind of method of repairing the plant giantreed recycling of heavy-metal contaminated soil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103464101A CN103464101A (en) | 2013-12-25 |
| CN103464101B true CN103464101B (en) | 2015-08-26 |
Family
ID=49789273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310406581.4A Active CN103464101B (en) | 2013-09-09 | 2013-09-09 | A kind of method of repairing the plant giantreed recycling of heavy-metal contaminated soil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103464101B (en) |
Families Citing this family (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104388094B (en) * | 2014-10-13 | 2017-04-05 | 广东省生态环境与土壤研究所（广东省土壤科学博物馆） | A kind of iron-based biological carbon materials, its preparation technology and its application in remediation contaminated soil |
| CN104785511A (en) * | 2015-03-18 | 2015-07-22 | 中国农业科学院植物保护研究所 | Remediation of fipronil and/or ethiprole contaminated sediments by using biochar and detection method thereof |
| CN104785519B (en) * | 2015-04-22 | 2017-04-19 | 清华大学 | Method for in situ fixation of vanadium ore polluted soil by modified charcoal |
| CN105562428A (en) * | 2015-08-11 | 2016-05-11 | 济南大学 | Phenanthrene-contaminated soil treatment method |
| CN105127188A (en) * | 2015-09-30 | 2015-12-09 | 河南行知专利服务有限公司 | Method for restoring soil polluted by heavy metal through synergy of biochar and plants |
| CN105170622B (en) * | 2015-09-30 | 2018-07-27 | 上海伊尔庚环境工程有限公司 | A kind of restorative procedure of acidity-heavy-metal contaminated soil |
| CN106111062A (en) * | 2016-07-30 | 2016-11-16 | 华南理工大学 | A kind of parasol bamboo biological carbon preparation method and applications based on artificial wet land system |
| CN106311146A (en) * | 2016-09-20 | 2017-01-11 | 中国环境科学研究院 | Biological charcoal prepared by countryside heavy-metal-enriched plant biomass and preparation method and application of biological charcoal |
| CN108236917A (en) * | 2016-12-25 | 2018-07-03 | 海门市源美美术图案设计有限公司 | A kind of modification biological charcoal based on reed straw and the application in lead contamination |
| CN106699237B (en) * | 2017-01-23 | 2020-06-05 | 湖南农业大学 | Resource utilization method of straws produced after phytoremediation of soil heavy metal pollution |
| CN107056544A (en) * | 2017-04-27 | 2017-08-18 | 河南农业大学 | One kind promotes root growth high carbon-based soil remediation fertilizer and method |
| CN107243323B (en) * | 2017-06-27 | 2020-05-08 | 王建军 | Magnetic bamboo fiber based activated carbon material and preparation method and application thereof |
| CN107520243A (en) * | 2017-08-09 | 2017-12-29 | 大连地拓环境科技有限公司 | A kind of method using bamboo willow restoration of soil polluted by heavy metal |
| CN108002359A (en) * | 2017-11-03 | 2018-05-08 | 复旦大学 | A kind of method of hydrothermal liquefaction recycling heavy metal pollution rehabilitation plant |
| CN107721748B (en) * | 2017-11-14 | 2021-05-14 | 湖南农业大学 | Fixation of CO in air by using carbon sink grass2Method, carbon-sink grass carbon-based cadmium-reducing soil conditioner and preparation method and application thereof |
| CN108130108A (en) * | 2017-12-29 | 2018-06-08 | 湖南玖恪土壤与环境科技有限公司 | A kind of method for reducing stalk and preparing cadmium volatilization during charcoal |
| CN108838204A (en) * | 2018-07-02 | 2018-11-20 | 昆明理工大学 | A kind of restorative procedure of organic polluted soil |
| CN109622592A (en) * | 2018-11-23 | 2019-04-16 | 山西大学 | A kind of heavy metal-polluted soil removing method based on modification biological charcoal |
| CN109850887A (en) * | 2019-01-17 | 2019-06-07 | 三峡大学 | Ciliate desert-grass is enriched with the preparation method and applications of the charcoal of copper |
| CN109675564B (en) * | 2019-01-17 | 2022-06-03 | 三峡大学 | Preparation method and application of water hyacinth iron biochar |
| CN109604314B (en) * | 2019-01-23 | 2024-02-13 | 中国科学院南京土壤研究所 | Soil heavy metal super-accumulation plant body treatment device and method for preparing biomass charcoal |
| CN110125143A (en) * | 2019-05-23 | 2019-08-16 | 中盟环境建设有限公司 | A kind of harmless processing method of sludge containing heavy metal biological concentration and purposes |
| CN110282623B (en) * | 2019-06-20 | 2022-06-10 | 运城学院 | Arundo donax resource utilization method for restoring heavy metal contaminated soil |
| CN111821946A (en) * | 2020-07-14 | 2020-10-27 | 江苏省地质工程勘察院 | Preparation method of modified restoration plant biochar for cadmium-polluted soil restoration |
| CN112495373A (en) * | 2020-12-10 | 2021-03-16 | 重庆大学 | Manganese-containing soil low-temperature denitration catalyst and preparation method thereof |
| CN112958606B (en) * | 2021-02-03 | 2022-07-15 | 中环国投(重庆)环保产业开发有限公司 | Remediation method for organic contaminated soil |
| CN113058978B (en) * | 2021-03-26 | 2022-02-15 | 深圳金普迈生物科技有限公司 | Production process of heavy metal mediated biochar compound solidified by silicate |
| CN113232116A (en) * | 2021-03-26 | 2021-08-10 | 中国科学院南京土壤研究所 | Method for manufacturing ecological plate by utilizing polluted soil restoration plants |
| CN115213220B (en) * | 2022-06-10 | 2023-06-23 | 怀化学院 | Resource utilization method of cadmium-containing ramie waste |
-
2013
- 2013-09-09 CN CN201310406581.4A patent/CN103464101B/en active Active
Non-Patent Citations (3)
| Title |
|---|
| 《草本能源植物修复重金属污染土壤的潜力》;侯新村 等;《中国草地学报》;20120131;第37卷(第1期);59-64 * |
| 王震宇 等.《湿地植物芦竹生物炭的制备及特性表征研究》.《中国环境科学学会学术年会论文集(2010)》.2010,4341-4346. * |
| 阎培智 等.《生物质热解生产生物炭研究进展》.《全国农村清洁能源与低碳技术学术研讨会论文集(2011)》.2011,185-190. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103464101A (en) | 2013-12-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103464101B (en) | A kind of method of repairing the plant giantreed recycling of heavy-metal contaminated soil | |
| CN104560046B (en) | A kind of contaminated soil passivator and preparation method and application | |
| CN103406333B (en) | A kind of Safe disposal method for high-concentration arsenic residue | |
| CN103894395B (en) | A kind of method that heavy-metal contaminated soil secondary is repaired | |
| CN106978185A (en) | A kind of heavy-metal contaminated soil repairs conditioner and its application | |
| CN110076185B (en) | Method for repairing heavy metal and polycyclic aromatic hydrocarbon combined contaminated soil | |
| CN101664757B (en) | Method for restoring heavy metal pollution of vegetable field soil with in-situ passivation method | |
| CN103878172B (en) | A kind of method of polycyclic aromatic hydrocarbons contaminated soil and city organic waste Combined Treatment | |
| CN107596613B (en) | Method for stabilizing and solidifying heavy metal ions in incineration fly ash | |
| CN105598146B (en) | Curing agent and restorative procedure for chromium-polluted soil reparation | |
| CN111040771B (en) | Site-contaminated soil ex-situ remediation agent and application method thereof | |
| CN106825018A (en) | A kind of composite chemical ELUTION METHOD of efficient restoration of soil polluted by heavy metal | |
| CN106179216A (en) | The preparation method of a kind of Magnetic Activated hydro-thermal charcoal and application | |
| CN106147775A (en) | A kind of biochemistry combined soil heavy metal pollution fixed and repaired agent and application | |
| CN106576997B (en) | Method for preparing landscaping soil by utilizing polluted soil and kitchen waste | |
| CN101249502A (en) | Thermal decomposition repairing method containing chromium soil | |
| CN104479684A (en) | Curing agent and method for heavy metal in polluted soil | |
| CN103521512A (en) | Sepiolite-chitosan composite material capable of repairing soils containing lead and cadmium and preparation method thereof | |
| CN111410305A (en) | Chromium-polluted water body remediation method and application | |
| CN102247980A (en) | Remediation agent for leaching soil polluted by heavy metal chrome | |
| CN109226233A (en) | Height repairs target heavy-metal contaminated soil administering method | |
| CN104479686A (en) | Curing agent and method for heavy metal | |
| CN114774130A (en) | Modified clay mineral for repairing arsenic-lead-antimony composite contaminated soil and preparation method and application thereof | |
| CN104531158A (en) | Curing agent and curing method thereof | |
| CN107262522B (en) | Electrolytic manganese contaminated site soil stabilization remediation agent and remediation method thereof |
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 |