CN105950170A - Biogas residue based novel Cu in-situ detoxification method of contaminated site - Google Patents

Biogas residue based novel Cu in-situ detoxification method of contaminated site Download PDF

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Publication number
CN105950170A
CN105950170A CN201610370392.XA CN201610370392A CN105950170A CN 105950170 A CN105950170 A CN 105950170A CN 201610370392 A CN201610370392 A CN 201610370392A CN 105950170 A CN105950170 A CN 105950170A
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China
Prior art keywords
biogas residue
sulfate
medicament
contaminated site
organic
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CN201610370392.XA
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Chinese (zh)
Inventor
张大磊
郝志鹏
赵昱皓
徐海清
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Qingdao University of Technology
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Qingdao University of Technology
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Priority to CN201610370392.XA priority Critical patent/CN105950170A/en
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K17/00Soil-conditioning materials or soil-stabilising materials
    • C09K17/40Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds

Abstract

The invention adopts a biogas residue based novel Cu in-situ detoxification method of a contaminated site. A biogas residue, a carbon source and a sulfate are prepared into a medicament; the medicament is injected into Cu-containing soil in an in-situ manner; subsequently, an immobilizing ecological microbial inoculum is enabled to gradually permeate underground by adopting special construction and maintenance ways; Cu in soil which is contaminated deep is immobilized. By using the method, A Cu-containing site which is higher in contamination depth can be restored in low-cost and further high-efficiency manners; meanwhile, the treatment of wastes with the processes of wastes against one another is adopted; the biogas residue is treated.

Description

A kind of novel contaminated site Cu situ detoxification method based on biogas residue
Technical field
The present invention provides a kind of method of novel process Cu contaminated soil; it is primarily directed to the soil that Cu pollution depth is higher; biogas residue, carbon source and sulfate are configured to medicament and are injected into containing in Cu soil in situ; use special maintenance method subsequently; Cu 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 Cu.Process the method containing Cu 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 Cu situ detoxification method based on biogas residue, biogas residue, carbon source and sulfate are configured to medicament and are injected into containing in Cu soil in situ, use special construction and maintenance method subsequently, make fixing ecological microbial agent gradually permeate the ground, deep layer polluted soil Cu is fixed.The place containing Cu that pollution depth is higher can be repaired by this method with low cost and efficiently, and biogas residue is processed by the treatment of wastes with processes of wastes against one another simultaneously.It comprises the steps of
(1) sodium sulfate, biogas residue or carbon source solution are mixed according to a certain percentage, after making mixing, solution dried biogas residues 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 Cu soil remediation medicament;
(2) being forced through the reparation medicament batch (-type) in step (1) containing in Cu soil, injection pressure is at 0.1-1Mpa, and average every day, every square metre of injection rate was at 0.1-5 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 Cu, make full use of sulfate simultaneously, it is translated into sulfide, Cu simultaneously, is converted into more stable sulfuration Cu precipitation by the most fixing Cu.
Comparing traditional containing Cu agent, soil treatment method, this method has a following advantage:
1. the sulfate reducting bacteria sulphate reducing in biogas residue microbial inoculum, generates sulfide, can be while more efficient fixing Cu;
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 Cu, and does not results in ecological problem;
3.Cu and sulfate reducting bacteria metabolite sulfide form sulfuration Cu precipitation so that in soil, Cu is more stable, is significantly better than other biochemical process;
4. this method uses biogas residue 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, biogas residue or carbon source solution are mixed according to a certain percentage, after making mixing, solution dried biogas residues 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 Cu soil remediation medicament;
(2) being forced through the reparation medicament batch (-type) in step (1) containing in Cu soil, injection pressure is at 0.1-0.5Mpa, and average every day, every square metre of injection rate was at 0.1-1 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;After engineering construction 2 years, more than 20 meters soil Cu stripping quantities of deep layer are below 2mg/kg, and subsoil water amount containing Cu is less than 0.1mg/L.
Embodiment 2:
(1) sodium sulfate, biogas residue or carbon source solution are mixed according to a certain percentage, after making mixing, solution dried biogas residues 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 Cu soil remediation medicament;
(2) being forced through the reparation medicament batch (-type) in step (1) containing in Cu soil, injection pressure is at 0.1-0.5Mpa, and average every day, every square metre of injection rate was at 0.1-1 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;After engineering construction 1 year, more than 40 meters soil Cu stripping quantities of deep layer are below 2mg/kg, and subsoil water amount containing Cu 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 Cu situ detoxification method based on biogas residue, is characterized in that, comprise the steps of
(1) sodium sulfate, biogas residue or carbon source solution are mixed according to a certain percentage, after making mixing, solution dried biogas residues 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 Cu soil remediation medicament;
(2) being forced through the reparation medicament batch (-type) in step (1) containing in Cu soil, injection pressure is at 0.1-1Mpa, and average every day, every square metre of injection rate was at 0.1-5 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 Cu situ detoxification method based on biogas residue, is characterized in that, described biogas residue be agricultural, grocery trade debirs carry out the solid residue in dry type, half dry type and wet type anaerobic fermentation process.
A kind of novel contaminated site Cu situ detoxification method based on biogas residue, 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 Cu situ detoxification method based on biogas residue, 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 Cu situ detoxification method based on biogas residue, 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 Cu situ detoxification method based on biogas residue, 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 Cu/ organic carbon: 1, the mass ratio of sulfate (remembering with SO4)/organic carbon is for (0-1): 1。
CN201610370392.XA 2016-05-30 2016-05-30 Biogas residue based novel Cu in-situ detoxification method of contaminated site Pending CN105950170A (en)

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101195859A (en) * 2006-12-05 2008-06-11 中国科学院过程工程研究所 Technique for processing low concentration heavy metal sulfate liquor with microorganism method
CN102276060A (en) * 2011-08-03 2011-12-14 吉林大学 Method for treating acidic heavy-metal-containing sulfate wastewater by sulfate reducing bacteria
CN104150731A (en) * 2014-08-20 2014-11-19 武汉理工大学 Combined biochemical and physicochemical method for stabilizing heavy metals in city sludge
CN105293659A (en) * 2015-10-21 2016-02-03 华南理工大学 Stabilization method for emergently treating sediment of heavy metal pollutants in water body
CN105436202A (en) * 2016-01-06 2016-03-30 昆明理工大学 Method for repairing heavy metal contaminated soil by microorganisms
CN105800796A (en) * 2016-05-10 2016-07-27 昆明理工大学 Floatation wastewater biological treatment process
CN105936825A (en) * 2016-05-30 2016-09-14 青岛理工大学 Biogas residue-based novel polluted place hexavalent chromium in-situ detoxifcation method
CN105935695A (en) * 2016-05-30 2016-09-14 青岛理工大学 Novel contaminated site Hg in-situ detoxifying method based on biogas residues
CN105945053A (en) * 2016-05-30 2016-09-21 青岛理工大学 Novel contaminated site Pb in-situ detoxification method based on biogas residues
CN105945054A (en) * 2016-05-30 2016-09-21 青岛理工大学 Heavily-polluted site Zn in-situ and ex-situ coupling detoxification method based on biogas residues

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101195859A (en) * 2006-12-05 2008-06-11 中国科学院过程工程研究所 Technique for processing low concentration heavy metal sulfate liquor with microorganism method
CN102276060A (en) * 2011-08-03 2011-12-14 吉林大学 Method for treating acidic heavy-metal-containing sulfate wastewater by sulfate reducing bacteria
CN104150731A (en) * 2014-08-20 2014-11-19 武汉理工大学 Combined biochemical and physicochemical method for stabilizing heavy metals in city sludge
CN105293659A (en) * 2015-10-21 2016-02-03 华南理工大学 Stabilization method for emergently treating sediment of heavy metal pollutants in water body
CN105436202A (en) * 2016-01-06 2016-03-30 昆明理工大学 Method for repairing heavy metal contaminated soil by microorganisms
CN105800796A (en) * 2016-05-10 2016-07-27 昆明理工大学 Floatation wastewater biological treatment process
CN105936825A (en) * 2016-05-30 2016-09-14 青岛理工大学 Biogas residue-based novel polluted place hexavalent chromium in-situ detoxifcation method
CN105935695A (en) * 2016-05-30 2016-09-14 青岛理工大学 Novel contaminated site Hg in-situ detoxifying method based on biogas residues
CN105945053A (en) * 2016-05-30 2016-09-21 青岛理工大学 Novel contaminated site Pb in-situ detoxification method based on biogas residues
CN105945054A (en) * 2016-05-30 2016-09-21 青岛理工大学 Heavily-polluted site Zn in-situ and ex-situ coupling detoxification method based on biogas residues

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
杨生玉编著: "《生物技术》", 31 October 2013, 河南科学技术出版社 *

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Application publication date: 20160921