CN110683776A - Method for treating polluted soil by co-processing of cement kilns - Google Patents
Method for treating polluted soil by co-processing of cement kilns Download PDFInfo
- Publication number
- CN110683776A CN110683776A CN201911114313.9A CN201911114313A CN110683776A CN 110683776 A CN110683776 A CN 110683776A CN 201911114313 A CN201911114313 A CN 201911114313A CN 110683776 A CN110683776 A CN 110683776A
- Authority
- CN
- China
- Prior art keywords
- polluted soil
- raw materials
- parts
- sandstone
- powder
- 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
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/26—Cements from oil shales, residues or waste other than slag from raw materials containing flue dust, i.e. fly ash
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Abstract
The invention discloses a method for treating polluted soil by using a cement kiln in a cooperative manner, which comprises the following steps: crushing raw materials: putting limestone and sandstone in the raw materials into a pulverizer for pulverization to obtain lime powder and sandstone powder, reserving the lime powder and the sandstone powder for later use, simultaneously detecting the content of various heavy metal components in polluted soil, and preliminarily homogenizing: respectively placing the polluted soil, the sandstone and the iron powder into a homogenizer for homogenization, and then standing for 12-23 min. According to the method for treating the polluted soil by the cement kiln co-processing, firstly, the polluted soil is reasonably proportioned with other raw materials, the utilization of the polluted soil can be improved, simultaneously, wastes can be comprehensively utilized, the purposes of recycling and harmlessness of wastes are achieved, secondly, the content of heavy metals in the soil can be well reduced by adding microorganisms capable of absorbing the heavy metals into the soil, and secondly, the effect of the microorganisms on absorbing the heavy metals can be improved by strictly controlling the temperature of the microorganisms during growth.
Description
Technical Field
The invention relates to the technical field of soil treatment, in particular to a method for treating polluted soil by using a cement kiln in a cooperative manner.
Background
The polluted soil has great harm to the environment and the human health, and how to properly dispose the polluted soil is the key. At present, only simple incineration and landfill are carried out on the polluted waste treatment in China, so that not only is the resource waste not reasonably utilized, but even secondary dangerous waste is possibly formed and more harm is caused, although the polluted soil is treated by the following polluted soil treatment modes, the use applicability and the like of the polluted soil are limited to a certain extent, the original solidification/stabilization and landfill treatment is carried out, the polluted soil is solved due to the fact that heavy metal elements cannot be eradicated, the plant restoration is suitable for treating the polluted soil with low pollutant concentration and shallow layer, and no application engineering is available in China. The electric restoration technology has the advantages of high cost, harsh conditions, no application engineering in China, high cost due to the fact that waste water needs to be treated in ex-situ washing, large risk of secondary pollution in-situ leaching and great importance for controlling underground water pollution.
Disclosure of Invention
The invention mainly aims to provide a method for treating polluted soil by using a cement kiln for cooperative treatment, which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
a method for treating polluted soil by using a cement kiln in a synergistic manner comprises the following steps:
(1) crushing raw materials: putting limestone and sandstone in the raw materials into a crusher for crushing to obtain lime powder and sandstone powder, reserving the lime powder and the sandstone powder for later use, and simultaneously detecting the content of various heavy metal components in the polluted soil;
(2) primary homogenization: respectively placing the polluted soil, the sandstone and the iron powder into a homogenizer for homogenization, and then standing for 12-23 min;
(3) and (3) storage: respectively adding microorganisms and clear water into the homogenized raw materials, and placing the raw materials into a storage warehouse for temperature control storage;
(4) mixing and homogenizing: adding lime powder, fly ash and a fixing agent into the stored raw materials, mixing in a mixer, mixing for 5-6min, and homogenizing in a homogenizer;
(5) mixing and homogenizing: during homogenization, the rotary kiln starts preheating at the same time, and when the temperature reaches 850-1450 ℃, the homogenized raw materials are placed into the rotary kiln for calcination;
(6) and (3) cooling: and taking out the calcined raw materials, and cooling by using a fan to obtain the cement clinker.
Preferably, in the step (1), the raw materials are prepared from the following components in parts by weight: 100-120 parts of polluted soil, 130-150 parts of limestone, 80-100 parts of sandstone, 50-60 parts of iron powder, 60-80 parts of fly ash, 800-1000 parts of clean water, 20-50 parts of microorganism and 30-45 parts of fixing agent.
Preferably, in the step (1), before crushing, the limestone and the sandstone are placed into a dryer for drying, the drying temperature is 100-.
Preferably, in step (3), the microorganisms include Bacillus, Escherichia coli and Pseudomonas; during temperature-controlled storage, the raw materials are kept at 60-75 ℃ and stored for 12-25 h.
Preferably, in the step (4), the fixing agent comprises manganese oxide and iron oxide.
Preferably, in the step (5), before the homogenized raw material is calcined, the lime powder and the fly ash are mixed, and then the mixture is uniformly sprayed on the surface of the homogenized raw material, wherein the calcining time is 15-30 min.
Preferably, in the step (6), the wind speed of the fan is 100-200m/s, and the lime powder is sprayed inside the calcined raw material until the temperature is reduced to the room temperature.
Preferably, the rotary kiln is internally provided with an exhaust gas treatment device and a cyclone dust collector.
Compared with the prior art, the invention has the following beneficial effects:
firstly, the polluted soil is reasonably proportioned with other raw materials, so that the utilization of the polluted soil can be improved, the wastes can be comprehensively utilized, and the purposes of recycling and harmlessness of the wastes are achieved;
secondly, the content of heavy metals in the soil can be well reduced by adding microorganisms capable of absorbing the heavy metals into the soil, and secondly, the effect of the microorganisms on absorbing the heavy metals can be improved by strictly controlling the temperature of the microorganisms during growth;
thirdly, the treatment effect on the polluted soil can be greatly improved by strictly monitoring the proceeding of each step and reasonably using each auxiliary device, so that the polluted soil can be optimally treated, and the treatment on the polluted soil can be better achieved;
and fourthly, the polluted soil is calcined together with the cement raw material as a raw material ingredient, the cement clinker is calcined at high temperature in the cement kiln, and the polluted soil is incinerated and disposed, so that the heavy metal elements are fixed in a clinker mineral phase through complex reaction with minerals in the raw materials to generate 'mineral lattice substitution', and no waste residue is generated after the polluted soil is treated.
Drawings
FIG. 1 is a flow chart of the overall structure of a method for treating contaminated soil by using a cement kiln in a cooperative manner;
FIG. 2 is a block diagram of the overall process of the treatment method for treating contaminated soil by using a cement kiln in a cooperative manner.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example 1
As shown in fig. 1-2, a method for treating contaminated soil by using a cement kiln in a cooperative manner comprises the following steps:
(1) crushing raw materials: the method comprises the following steps of putting limestone and sandstone in raw materials into a pulverizer to be pulverized to obtain lime powder and sandstone powder, reserving the lime powder and the sandstone powder for standby, simultaneously detecting the content of various heavy metal components in polluted soil, before pulverization, putting the limestone and the sandstone into a dryer to be dried, wherein the drying temperature is 110 ℃, the drying time is 55min, and during pulverization, the stirring speed is 1000r/min, the stirring time is 22min, and the raw materials are prepared from the following components in parts by weight: 110 parts of polluted soil, 140 parts of limestone, 90 parts of sandstone, 55 parts of iron powder, 70 parts of fly ash, 900 parts of clear water, 30 parts of microorganisms and 40 parts of fixing agent;
(2) primary homogenization: respectively placing the polluted soil, the sandstone and the iron powder into a homogenizer for homogenization, and then standing for 20 min;
(3) and (3) storage: respectively adding microorganisms and clear water into the homogenized raw materials, and placing the raw materials into a storage warehouse for temperature-controlled storage, wherein the microorganisms comprise bacillus, escherichia coli and pseudomonas; controlling the temperature of the raw materials to be 68 ℃ during temperature-controlled storage, and storing for 20 h;
(4) mixing and homogenizing: adding lime powder, fly ash and a fixing agent into the stored raw materials, mixing in a mixer, mixing for 5min, and homogenizing in a homogenizer, wherein the fixing agent comprises manganese oxide and iron oxide;
(5) mixing and homogenizing: during homogenization, the rotary kiln starts preheating at the same time, when the temperature reaches 850 ℃, the homogenized raw materials are placed into the rotary kiln for calcination, a waste gas treatment device and a cyclone dust collector are arranged inside the rotary kiln, before the homogenized raw materials are calcined, lime powder and fly ash are mixed, and then the mixture is uniformly sprayed on the surface of the homogenized raw materials, wherein the calcination time is 25 min;
(6) and (3) cooling: and taking out the calcined raw material, cooling by using a fan to obtain cement clinker, wherein the air speed of the fan is 150m/s, and simultaneously spraying lime powder into the calcined raw material until the temperature is reduced to the room temperature.
Example 2
As shown in fig. 1-2, a method for treating contaminated soil by using a cement kiln in a cooperative manner comprises the following steps:
(1) crushing raw materials: the method comprises the following steps of putting limestone and sandstone in raw materials into a pulverizer to be pulverized to obtain lime powder and sandstone powder, reserving the lime powder and the sandstone powder for standby, simultaneously detecting the content of various heavy metal components in polluted soil, before pulverization, putting the limestone and the sandstone into a dryer to be dried, wherein the drying temperature is 110 ℃, the drying time is 55min, and during pulverization, the stirring speed is 1000r/min, the stirring time is 22min, and the raw materials are prepared from the following components in parts by weight: 110 parts of polluted soil, 140 parts of limestone, 90 parts of sandstone, 55 parts of iron powder, 70 parts of fly ash, 900 parts of clear water, 30 parts of microorganisms and 40 parts of fixing agent;
(2) primary homogenization: respectively placing the polluted soil, the sandstone and the iron powder into a homogenizer for homogenization, and then standing for 20 min;
(3) and (3) storage: respectively adding microorganisms and clear water into the homogenized raw materials, and placing the raw materials into a storage warehouse for temperature-controlled storage, wherein the microorganisms comprise bacillus, escherichia coli and pseudomonas; controlling the temperature of the raw materials to be 68 ℃ during temperature-controlled storage, and storing for 20 h;
(4) mixing and homogenizing: adding lime powder, fly ash and a fixing agent into the stored raw materials, mixing in a mixer, mixing for 5min, and homogenizing in a homogenizer, wherein the fixing agent comprises manganese oxide and iron oxide;
(5) mixing and homogenizing: during homogenization, the rotary kiln starts preheating at the same time, when the temperature reaches 1050 ℃, the homogenized raw materials are placed into the rotary kiln for calcination, a waste gas treatment device and a cyclone dust collector are arranged inside the rotary kiln, before the homogenized raw materials are calcined, lime powder and fly ash are mixed, and then the mixture is uniformly sprayed on the surface of the homogenized raw materials, wherein the calcination time is 25 min;
(6) and (3) cooling: and taking out the calcined raw material, cooling by using a fan to obtain cement clinker, wherein the air speed of the fan is 150m/s, and simultaneously spraying lime powder into the calcined raw material until the temperature is reduced to the room temperature.
Example 3
As shown in fig. 1-2, a method for treating contaminated soil by using a cement kiln in a cooperative manner comprises the following steps:
(1) crushing raw materials: the method comprises the following steps of putting limestone and sandstone in raw materials into a pulverizer to be pulverized to obtain lime powder and sandstone powder, reserving the lime powder and the sandstone powder for standby, simultaneously detecting the content of various heavy metal components in polluted soil, before pulverization, putting the limestone and the sandstone into a dryer to be dried, wherein the drying temperature is 110 ℃, the drying time is 55min, and during pulverization, the stirring speed is 1000r/min, the stirring time is 22min, and the raw materials are prepared from the following components in parts by weight: 110 parts of polluted soil, 140 parts of limestone, 90 parts of sandstone, 55 parts of iron powder, 70 parts of fly ash, 900 parts of clear water, 30 parts of microorganisms and 40 parts of fixing agent;
(2) primary homogenization: respectively placing the polluted soil, the sandstone and the iron powder into a homogenizer for homogenization, and then standing for 20 min;
(3) and (3) storage: respectively adding microorganisms and clear water into the homogenized raw materials, and placing the raw materials into a storage warehouse for temperature-controlled storage, wherein the microorganisms comprise bacillus, escherichia coli and pseudomonas; controlling the temperature of the raw materials to be 68 ℃ during temperature-controlled storage, and storing for 20 h;
(4) mixing and homogenizing: adding lime powder, fly ash and a fixing agent into the stored raw materials, mixing in a mixer, mixing for 5min, and homogenizing in a homogenizer, wherein the fixing agent comprises manganese oxide and iron oxide;
(5) mixing and homogenizing: during homogenization, the rotary kiln starts preheating at the same time, when the temperature reaches 1250 ℃, the homogenized raw materials are placed into the rotary kiln for calcination, a waste gas treatment device and a cyclone dust collector are arranged inside the rotary kiln, before the homogenized raw materials are calcined, lime powder and fly ash are mixed, and after mixing, the mixture is uniformly sprayed on the surface of the homogenized raw materials, and the calcination time is 25 min;
(6) and (3) cooling: and taking out the calcined raw material, cooling by using a fan to obtain cement clinker, wherein the air speed of the fan is 150m/s, and simultaneously spraying lime powder into the calcined raw material until the temperature is reduced to the room temperature.
Example 4
As shown in fig. 1-2, a method for treating contaminated soil by using a cement kiln in a cooperative manner comprises the following steps:
(1) crushing raw materials: the method comprises the following steps of putting limestone and sandstone in raw materials into a pulverizer to be pulverized to obtain lime powder and sandstone powder, reserving the lime powder and the sandstone powder for standby, simultaneously detecting the content of various heavy metal components in polluted soil, before pulverization, putting the limestone and the sandstone into a dryer to be dried, wherein the drying temperature is 110 ℃, the drying time is 55min, and during pulverization, the stirring speed is 1000r/min, the stirring time is 22min, and the raw materials are prepared from the following components in parts by weight: 110 parts of polluted soil, 140 parts of limestone, 90 parts of sandstone, 55 parts of iron powder, 70 parts of fly ash, 900 parts of clear water, 30 parts of microorganisms and 40 parts of fixing agent;
(2) primary homogenization: respectively placing the polluted soil, the sandstone and the iron powder into a homogenizer for homogenization, and then standing for 20 min;
(3) and (3) storage: respectively adding microorganisms and clear water into the homogenized raw materials, and placing the raw materials into a storage warehouse for temperature-controlled storage, wherein the microorganisms comprise bacillus, escherichia coli and pseudomonas; controlling the temperature of the raw materials to be 68 ℃ during temperature-controlled storage, and storing for 20 h;
(4) mixing and homogenizing: adding lime powder, fly ash and a fixing agent into the stored raw materials, mixing in a mixer, mixing for 5min, and homogenizing in a homogenizer, wherein the fixing agent comprises manganese oxide and iron oxide;
(5) mixing and homogenizing: during homogenization, the rotary kiln starts preheating at the same time, when the temperature reaches 1450 ℃, the homogenized raw materials are placed into the rotary kiln for calcination, a waste gas treatment device and a cyclone dust collector are arranged inside the rotary kiln, before the homogenized raw materials are calcined, lime powder and fly ash are mixed, and then the mixture is uniformly sprayed on the surface of the homogenized raw materials, wherein the calcination time is 25 min;
(6) and (3) cooling: and taking out the calcined raw material, cooling by using a fan to obtain cement clinker, wherein the air speed of the fan is 150m/s, and simultaneously spraying lime powder into the calcined raw material until the temperature is reduced to the room temperature.
In table 1, examples 1 to 4 are single variables, and examples 1 to 4 show that the total content of heavy metals (5 g of the product is put into 1000ml of clean water to be stirred and soaked for 10min, 10ml of solution is taken, and the heavy metals include Pb, Cd, Hg, Cr, Ni, Cu, Zn and As) and the strength of the finished product (50 g of the product is put into a test tube with a diameter of 5mm, and clean water is added to be solidified to obtain a cement column) are measured at different calcination temperatures, and the test results are As follows:
| calcination temperature (. degree.C.) | Heavy Metal content (mg/L) | Finished strength (MPa) | |
| Example 1 | 850 | 10.4 | 22 |
| Example 2 | 1050 | 8.5 | 25 |
| Example 3 | 1250 | 7.3 | 28 |
| Example 4 | 1450 | 6.8 | 27 |
TABLE 1
As can be seen from the experimental data in Table 1, the method for treating the polluted soil by the synergistic treatment of the cement kiln can show that the heavy metal content in the product is reduced along with the continuous increase of the temperature during calcination by comparing the heavy metal content in the examples 1-4, this is because the contaminated soil is used as a raw material ingredient and co-calcined with the cement raw material, and when the cement clinker is calcined at a high temperature in the cement kiln, incinerating the polluted soil to ensure that the heavy metal elements are fixed in a clinker mineral phase by generating mineral lattice substitution through complex reaction with minerals in the raw materials, generating no waste residue after the polluted soil is treated, thereby greatly reducing the content of heavy metal in the product, and the strength of the product in the table 1 is continuously increased along with the increase of the calcining temperature, when the temperature is increased from 1250 to 1450 ℃, the strength of the product is slightly reduced, and the optimal selection is shown in the table 1 in the embodiment 3.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The method for treating the polluted soil by the aid of the cement kiln is characterized by comprising the following steps:
(1) crushing raw materials: putting limestone and sandstone in the raw materials into a crusher for crushing to obtain lime powder and sandstone powder, reserving the lime powder and the sandstone powder for later use, and simultaneously detecting the content of various heavy metal components in the polluted soil;
(2) primary homogenization: respectively placing the polluted soil, the sandstone and the iron powder into a homogenizer for homogenization, and then standing for 12-23 min;
(3) and (3) storage: respectively adding microorganisms and clear water into the homogenized raw materials, and placing the raw materials into a storage warehouse for temperature control storage;
(4) mixing and homogenizing: adding lime powder, fly ash and a fixing agent into the stored raw materials, mixing in a mixer, mixing for 5-6min, and homogenizing in a homogenizer;
(5) mixing and homogenizing: during homogenization, the rotary kiln starts preheating at the same time, and when the temperature reaches 850-1450 ℃, the homogenized raw materials are placed into the rotary kiln for calcination;
(6) and (3) cooling: and taking out the calcined raw materials, and cooling by using a fan to obtain the cement clinker.
2. The method for treating polluted soil by using the cement kiln in cooperation with the treatment according to claim 1, wherein the method comprises the following steps: in the step (1), the raw materials are prepared from the following components in parts by weight: 100-120 parts of polluted soil, 130-150 parts of limestone, 80-100 parts of sandstone, 50-60 parts of iron powder, 60-80 parts of fly ash, 800-1000 parts of clean water, 20-50 parts of microorganism and 30-45 parts of fixing agent.
3. The method for treating polluted soil by using the cement kiln in cooperation with the treatment according to claim 1, wherein the method comprises the following steps: in the step (1), before crushing, the limestone and the sandstone are put into a dryer for drying, the drying temperature is 120 ℃ and the drying time is 50-60min, and during crushing, the stirring speed is 1200r/min and the stirring time is 20-25 min.
4. The method for treating polluted soil by using the cement kiln in cooperation with the treatment according to claim 1, wherein the method comprises the following steps: in the step (3), the microorganisms comprise bacillus, escherichia coli and pseudomonas; during temperature-controlled storage, the raw materials are kept at 60-75 ℃ and stored for 12-25 h.
5. The method for treating polluted soil by using the cement kiln in cooperation with the treatment according to claim 1, wherein the method comprises the following steps: in the step (4), the fixing agent comprises manganese oxide and iron oxide.
6. The method for treating polluted soil by using the cement kiln in cooperation with the treatment according to claim 1, wherein the method comprises the following steps: in the step (5), before the homogenized raw material is calcined, the lime powder and the fly ash are mixed, and then the mixture is uniformly sprayed on the surface of the homogenized raw material, wherein the calcining time is 15-30 min.
7. The method for treating polluted soil by using the cement kiln in cooperation with the treatment according to claim 1, wherein the method comprises the following steps: in the step (6), the wind speed of the fan is 100-200m/s, and simultaneously, lime powder is sprayed inside the calcined raw material until the temperature is reduced to the room temperature.
8. The method for treating polluted soil by using the cement kiln in cooperation with the treatment according to claim 1, wherein the method comprises the following steps: and a waste gas treatment device and a cyclone dust collector are arranged in the rotary kiln.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911114313.9A CN110683776A (en) | 2019-11-14 | 2019-11-14 | Method for treating polluted soil by co-processing of cement kilns |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911114313.9A CN110683776A (en) | 2019-11-14 | 2019-11-14 | Method for treating polluted soil by co-processing of cement kilns |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110683776A true CN110683776A (en) | 2020-01-14 |
Family
ID=69116815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911114313.9A Pending CN110683776A (en) | 2019-11-14 | 2019-11-14 | Method for treating polluted soil by co-processing of cement kilns |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110683776A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115108740A (en) * | 2022-05-23 | 2022-09-27 | 临沂中联水泥有限公司 | Cement clinker for treating polluted soil of coking plant |
| CN115745436A (en) * | 2022-11-22 | 2023-03-07 | 四川墣锦净土科技有限公司 | Method for cooperatively treating multiple heavy metal combined contaminated soil by using cement kiln |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4969775A (en) * | 1987-10-22 | 1990-11-13 | Metallgesellschaft Ag | Process of dressing contaminated soils |
| CN102775080A (en) * | 2012-08-08 | 2012-11-14 | 常州市环境科学研究院 | Treatment method of organochlorine pesticide polluted soil |
| CN103664015A (en) * | 2013-09-21 | 2014-03-26 | 北京工业大学 | Method for treating organic contaminated soil in classification way by utilizing cement production process |
| CN104874593A (en) * | 2015-05-19 | 2015-09-02 | 北京鼎实环境工程有限公司 | Method and device for treating organic polluted soil by two-section-type indirect thermal desorption technology |
| CN108114976A (en) * | 2017-12-19 | 2018-06-05 | 轻工业环境保护研究所 | A kind of method of repairing polluted soil |
-
2019
- 2019-11-14 CN CN201911114313.9A patent/CN110683776A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4969775A (en) * | 1987-10-22 | 1990-11-13 | Metallgesellschaft Ag | Process of dressing contaminated soils |
| CN102775080A (en) * | 2012-08-08 | 2012-11-14 | 常州市环境科学研究院 | Treatment method of organochlorine pesticide polluted soil |
| CN103664015A (en) * | 2013-09-21 | 2014-03-26 | 北京工业大学 | Method for treating organic contaminated soil in classification way by utilizing cement production process |
| CN104874593A (en) * | 2015-05-19 | 2015-09-02 | 北京鼎实环境工程有限公司 | Method and device for treating organic polluted soil by two-section-type indirect thermal desorption technology |
| CN108114976A (en) * | 2017-12-19 | 2018-06-05 | 轻工业环境保护研究所 | A kind of method of repairing polluted soil |
Non-Patent Citations (1)
| Title |
|---|
| 翟红侠主编: "《土木工程材料》", 31 July 2009, 合肥工业大学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115108740A (en) * | 2022-05-23 | 2022-09-27 | 临沂中联水泥有限公司 | Cement clinker for treating polluted soil of coking plant |
| CN115745436A (en) * | 2022-11-22 | 2023-03-07 | 四川墣锦净土科技有限公司 | Method for cooperatively treating multiple heavy metal combined contaminated soil by using cement kiln |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11358189B2 (en) | Site heavy metal contaminated soil treatment equipment and treatment method therefor | |
| CN104649650A (en) | Novel sludge brick making technique | |
| CN105712739B (en) | Magnetic biological ceramsite prepared from waste incineration fly ash and preparation method thereof | |
| CN110683776A (en) | Method for treating polluted soil by co-processing of cement kilns | |
| CN106866169B (en) | A kind of processing system of hazardous waste sludge recycling, method and the haydite produced using the system, method | |
| CN111675549A (en) | Resource utilization method of hexavalent chromium contaminated soil | |
| KR101062990B1 (en) | Apparatus for manufacturing active carbon using sewage sludge and active carbon manufactured by the apparatus | |
| CN106116640A (en) | The method of comprehensive utilization of one way of life rubbish | |
| CN106995306B (en) | Method for firing ceramsite by using activated sludge | |
| JP4789410B2 (en) | Waste stabilization treatment solidified material and processing equipment | |
| CN103964668A (en) | Sludge treatment process equipment and treatment method | |
| KR101301122B1 (en) | Method and apparatus for treating sludge | |
| JP2008272542A (en) | Heavy metal elution preventing method for baked material and baked material for civil engineering material | |
| CN105731839B (en) | A kind of cement kiln burns the processing method of Polluted Soil | |
| JP4789411B2 (en) | Waste stabilization treatment and treatment equipment | |
| CN103787559A (en) | Sludge resourceful-treatment method | |
| CN103467024B (en) | Novel refuse treatment and reutilization technique | |
| JP6841127B2 (en) | Cement clinker manufacturing method, cement manufacturing method and treatment method of organic sludge and sulfur-containing waste | |
| CN113336527A (en) | Formula and method for producing foamed ceramic by adding fly ash and sludge of sewage treatment plant | |
| CN102218444B (en) | Method for cooperative treatment of polluted soil with cement kiln | |
| JP6848608B2 (en) | Cement clinker manufacturing method, cement manufacturing method and treatment method of organic sludge and construction waste plastic | |
| CN105503150A (en) | Brick burning kiln cooperated harmless disposal method for waste aluminum electrolysis bath liners | |
| CN112408732A (en) | Sludge curing agent and application thereof | |
| CN105042600A (en) | Treatment method for refuse incineration power plant ash residues and heavy metal and dioxin in medical treatment incineration ash | |
| CN105084857A (en) | Technological method for treating stainless steel pickling sludge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200114 |
|
| RJ01 | Rejection of invention patent application after publication |