CN106001086A - Novel Hg in-situ detoxifying method for contaminated site - Google Patents
Novel Hg in-situ detoxifying method for contaminated site Download PDFInfo
- Publication number
- CN106001086A CN106001086A CN201610370366.7A CN201610370366A CN106001086A CN 106001086 A CN106001086 A CN 106001086A CN 201610370366 A CN201610370366 A CN 201610370366A CN 106001086 A CN106001086 A CN 106001086A
- Authority
- CN
- China
- Prior art keywords
- sulfate
- medicament
- contaminated site
- situ
- organic
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
- B09C1/105—Reclamation of contaminated soil microbiologically, biologically or by using enzymes using fungi or plants
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
Abstract
The invention discloses a novel Hg in-situ detoxifying method for a contaminated site. Sludge, a carbon source and sulfate are prepared into a reagent to be injected into Hg-containing soil in an in-situ manner; and then a special construction and curing manner is adopted for a fixation biological bactericide to gradually permeate into the ground, and Hg of the contaminated soil on the deep layer is fixed. By means of the method, the Hg-containing site which is high in contamination depth can be efficiently repaired with low cost, meanwhile, waste is used for treating waste, and the sludge is treated.
Description
Technical field
The present invention provides a kind of method of novel process Hg contaminated soil; it is primarily directed to the soil that Hg pollution depth is higher; mud, carbon source and sulfate are configured to medicament and are injected into containing in Hg soil in situ; use special maintenance method subsequently; Hg can be fixed efficiently; the most cost-effective, belong to field of environment protection.
Background technology
Owing to mining, Metallurgical Waste Water arbitrarily discharge, cause a large amount of soil and polluted by Hg.Process the method containing Hg soil at present the most defective.High-temperature melting method cost is high, and power consumption is big.Bioanalysis is long for reaction time, and easily causes the secondary pollution of adventive microbial inoculum.Solidification method effect is unstable, and soil is easily caused secondary pollution by firming agent.The patent No. 201510056406.6 describes a kind of curing containing heavy metal soil, but the method using substantial amounts of material, relatively costly, on the other hand solidification effect is unstable, the most easily there is carbonation in the calcium oxide as added so that alkaline-curing effect reduces.
Summary of the invention
For the deficiencies in the prior art, the present invention uses a kind of novel contaminated site Hg situ detoxification method, mud, carbon source and sulfate are configured to medicament and are injected into containing in Hg soil in situ, use special construction and maintenance method subsequently, make fixing ecological microbial agent gradually permeate the ground, deep layer polluted soil Hg is fixed.The place containing Hg that pollution depth is higher can be repaired by this method with low cost and efficiently, and mud is processed by the treatment of wastes with processes of wastes against one another simultaneously.It comprises the steps of
(1) sodium sulfate, mud or carbon source solution are mixed according to a certain percentage, after making mixing, solution dewatered sludge content is 0.1-20%, solid content 0.5-25%, organic carbon content 0.5-25%, the mass ratio of sulfate (remembering with SO4)/organic carbon is for (0-1): 1, mixed solution reaction 0-5 days, it is thus achieved that Hg soil remediation medicament;
(2) being forced through the reparation medicament batch (-type) in step (1) containing in Hg soil, injection pressure is at 0.1-1Mpa, and average every day, every square metre of injection rate was at 0-5 cubic meter, was continued until that reparation terminates, during can constantly extract subsoil water;
(3) during repairing, it is desirable to the annual average rainfall in place is at more than 200mm, not enough then use the mode of surface sprinkling water to supplement, and enables medicament continuous to lower floor's seepage flow.
This method injects additional special field construction and maintenance in situ by special ecological medicament, place is promoted to form the flora based on sulfate reducting bacteria on a large scale, first this flora can utilize carbon source effectively to fix Hg, make full use of sulfate simultaneously, it is translated into sulfide, Hg simultaneously, is converted into more stable sulfuration Hg precipitation by the most fixing Hg.
Comparing traditional containing Hg agent, soil treatment method, this method has a following advantage:
1. the sulfate reducting bacteria sulphate reducing in sludge microbial agent, generates sulfide, can be while more efficient fixing Hg;
2. the sulfate reduction flora cultivated itself is indigenous flora, and natural tolerance is strong, easily multiplies on a large scale in place, can the most effectively fix Hg, and does not results in ecological problem;
3.Hg and sulfate reducting bacteria metabolite sulfide form sulfuration Hg precipitation so that in soil, Hg is more stable, is significantly better than other biochemical process;
4. this method uses mud and debirs as primary raw material, greatly reduces cost;
5. this method uses in-situ immobilization to deep soil, it is to avoid the excavation of deep soil, greatly reduces cost.
It is embodied as example as follows:
Embodiment 1:
(1) sodium sulfate, mud or carbon source solution are mixed according to a certain percentage, after making mixing, solution dewatered sludge content is 0.1-5%, solid content 0.5-5%, organic carbon content 0.5-5%, the mass ratio of sulfate (remembering with SO4)/organic carbon is as 0.1:1, mixed solution reaction 1 day, it is thus achieved that Hg soil remediation medicament;
(2) being forced through the reparation medicament batch (-type) in step (1) containing in Hg soil, injection pressure is at 0.5-1Mpa, and average every day, every square metre of injection rate was at 500L, was continued until that reparation terminates;
(3) during repairing, it is desirable to the annual average rainfall in place is at more than 200mm, not enough then use the mode of surface sprinkling water to supplement, and enables medicament continuous to lower floor's seepage flow;After engineering construction 2 years, more than 20 meters soil Hg stripping quantities of deep layer are below 2mg/kg, and subsoil water amount containing Hg is less than 0.1mg/L.
Embodiment 2:
(1) sodium sulfate, mud or carbon source solution are mixed according to a certain percentage, after making mixing, solution dewatered sludge content is 5-20%, solid content 5-25%, organic carbon content 5-25%, the mass ratio of sulfate (remembering with SO4)/organic carbon is as 0.5:1, mixed solution reaction 2 days, it is thus achieved that Hg soil remediation medicament;
(2) being forced through by the reparation medicament batch (-type) in step (1) containing in Hg soil, injection pressure is at 0.5-1Mpa, and average every day, every square metre of injection rate was at 3 cubic metres, was continued until that reparation terminates;
(3) during repairing, it is desirable to the annual average rainfall in place is at more than 200mm, not enough then use the mode of surface sprinkling water to supplement, and enables medicament continuous to lower floor's seepage flow;After engineering construction 1 year, more than 40 meters soil Hg stripping quantities of deep layer are below 2mg/kg, and subsoil water amount containing Hg is less than 0.1mg/L.
Above example is only in order to illustrate technical scheme, rather than is limited;Although the present invention being described in detail with reference to previous embodiment, for the person of ordinary skill of the art, still the technical scheme described in previous embodiment can be modified, or wherein portion of techniques feature is carried out equivalent;And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of claimed technical solution of the invention.
Claims (6)
1. a novel contaminated site Hg situ detoxification method, is characterized in that, comprise the steps of
(1) sodium sulfate, mud or carbon source solution are mixed according to a certain percentage, after making mixing, solution dewatered sludge content is 0.1-20%, solid content 0.5-25%, organic carbon content 0.5-25%, the mass ratio of sulfate (remembering with SO4)/organic carbon is for (0-1): 1, mixed solution reaction 0-5 days, it is thus achieved that Hg soil remediation medicament;
(2) being forced through the reparation medicament batch (-type) in step (1) containing in Hg soil, injection pressure is at 0.1-1Mpa, and average every day, every square metre of injection rate was at 0-5 cubic meter, was continued until that reparation terminates;
(3) during repairing, it is desirable to the annual average rainfall in place is at more than 200mm, not enough then use the mode of surface sprinkling water to supplement, and enables medicament continuous to lower floor's seepage flow.
A kind of novel contaminated site Hg situ detoxification method the most as claimed in claim 1, is characterized in that, described mud is anaerobic sludge produced by sewage treatment anaerobic technique, it is possible to the double oxygen mud of admixture part.
A kind of novel contaminated site Hg situ detoxification method the most as claimed in claim 1, it is characterized in that, described carbon source solution can be containing organic solution such as ethanol, saccharide, protein, starch, can also be for the solution containing the industry organic solid waste such as organic waste, changing food waste, can also be industrial and municipal organic wastewater, described sodium sulfate can be substituted by the material of other containing sulfate.
A kind of novel contaminated site Hg situ detoxification method the most as claimed in claim 1, is characterized in that, constantly extracts subsoil water when of injecting medicament, forms negative pressure, makes medicament easily flow into underground.
A kind of novel contaminated site Hg situ detoxification method the most as claimed in claim 1, it is characterized in that, during reparation, the reparation medicament injecting place can be substituted by carbon source and sulfate mixed liquor, and in mixed liquor, the mass ratio of sulfate (remembering with SO4)/organic carbon is for (0-1): 1.
A kind of novel contaminated site Hg situ detoxification method the most as claimed in claim 5, it is characterized in that, carbon source and sulfate mixed liquor can add the subsoil water of place extracting, are then injected in place, and it is (0-1) that mixed liquid meets the mass ratio of Hg/ organic carbon:
1, the mass ratio of sulfate (remembering with SO4)/organic carbon is for (0-1):
1。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610370366.7A CN106001086A (en) | 2016-05-30 | 2016-05-30 | Novel Hg in-situ detoxifying method for contaminated site |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610370366.7A CN106001086A (en) | 2016-05-30 | 2016-05-30 | Novel Hg in-situ detoxifying method for contaminated site |
Publications (1)
Publication Number | Publication Date |
---|---|
CN106001086A true CN106001086A (en) | 2016-10-12 |
Family
ID=57092286
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201610370366.7A Pending CN106001086A (en) | 2016-05-30 | 2016-05-30 | Novel Hg in-situ detoxifying method for contaminated site |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN106001086A (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102059247A (en) * | 2010-11-29 | 2011-05-18 | 中国科学院地理科学与资源研究所 | Vehicle-mounted repairing equipment and method for polluted site soil and underground water body |
CN102921718A (en) * | 2012-10-30 | 2013-02-13 | 华北电力大学 | Two-phase vacuum suction device with auxiliary chemical leaching and method for repairing soil thereof |
CN103978025A (en) * | 2013-12-05 | 2014-08-13 | 青岛理工大学 | Landfill method for rapid stabilization of chromium-containing soil and household garbage |
CN103981097A (en) * | 2013-12-05 | 2014-08-13 | 青岛理工大学 | Preparation method of remediation flora for Cr (VI) contaminated site from sludge |
-
2016
- 2016-05-30 CN CN201610370366.7A patent/CN106001086A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102059247A (en) * | 2010-11-29 | 2011-05-18 | 中国科学院地理科学与资源研究所 | Vehicle-mounted repairing equipment and method for polluted site soil and underground water body |
CN102921718A (en) * | 2012-10-30 | 2013-02-13 | 华北电力大学 | Two-phase vacuum suction device with auxiliary chemical leaching and method for repairing soil thereof |
CN103978025A (en) * | 2013-12-05 | 2014-08-13 | 青岛理工大学 | Landfill method for rapid stabilization of chromium-containing soil and household garbage |
CN103981097A (en) * | 2013-12-05 | 2014-08-13 | 青岛理工大学 | Preparation method of remediation flora for Cr (VI) contaminated site from sludge |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101182093B (en) | Microbe harmless treatment method for oil-gas field waste slurry | |
CN105945050A (en) | Cr (VI) heavy polluted site in-situ detoxification method based on biogas residue | |
CN100418647C (en) | Method for treating waste mud of drilling well by harmless process | |
CN107446584B (en) | Hexavalent chromium site in-situ and ex-situ coupling detoxification method based on biogas residues | |
CN105935695A (en) | Novel contaminated site Hg in-situ detoxifying method based on biogas residues | |
CN105935691A (en) | Novel contaminated site Cd in-situ detoxication method | |
CN105935697A (en) | Chromium slag detoxification method based on sludge | |
CN105969715A (en) | Method for preparing efficient ecological restoration floras for Cd contaminated site from sludge | |
CN105935685A (en) | Novel pollution site Zn in-situ detoxification method | |
CN105935687A (en) | Novel pollution site Pb in-situ detoxification method | |
CN105935696A (en) | Novel pollution site Cd in-situ detoxification method based on biogas residues | |
CN105945053A (en) | Novel contaminated site Pb in-situ detoxification method based on biogas residues | |
CN106001086A (en) | Novel Hg in-situ detoxifying method for contaminated site | |
CN105945052A (en) | Heavily-polluted site Pb in-situ and ex-situ couplingdetoxificationmethod | |
CN105935698A (en) | Novel pollution site Cu in-situ detoxification method | |
CN105935699A (en) | Novel pollution site Sb in-situ detoxification method | |
CN105950532A (en) | Method for preparing efficient ecological restoration flora for Hg-polluted site by utilizing sludge | |
CN106040735A (en) | Heavily-polluted site Cu in-situ and ex-situ coupling detoxifying method | |
CN106001081A (en) | Novel Sb in-situ detoxifying method for contaminated site based on biogas residues | |
CN105950170A (en) | Biogas residue based novel Cu in-situ detoxification method of contaminated site | |
Nikookar | Reutilization of Oil and Gas Produced Water as a Replacement for Traditional Mixing Water within the Cementitious System | |
CN105945054B (en) | Heavily-polluted site Zn in-situ and ex-situ coupling detoxification method based on biogas residues | |
CN106040736A (en) | Biogas-residue-based in-situ and heterotopic coupling detoxication method for Sb of heavily-polluted site | |
CN106031927A (en) | Novel contaminated site Zn in-situ detoxification method based on biogas residues | |
CN106001087A (en) | Hg in-situ and heterotopic coupling detoxifying method for heavily-contaminated site |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161012 |
|
WD01 | Invention patent application deemed withdrawn after publication |