CN111266399A - Efficient ozone treatment device and method for repairing organic contaminated soil - Google Patents
Efficient ozone treatment device and method for repairing organic contaminated soil Download PDFInfo
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- CN111266399A CN111266399A CN201811472487.8A CN201811472487A CN111266399A CN 111266399 A CN111266399 A CN 111266399A CN 201811472487 A CN201811472487 A CN 201811472487A CN 111266399 A CN111266399 A CN 111266399A
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
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Abstract
The invention discloses an efficient ozone treatment device and method for repairing organic contaminated soil. An efficient ozone treatment device for repairing organic contaminated soil is composed of an ozone generator and a buried gas transmission pipeline, wherein an air pipe is directly buried in the soil by using the characteristic that ozone is strongly oxidized and degraded to combine the contaminated soil area and the concentration of organic pollutants to design the gas transmission amount and the gas generation time, and a stainless steel and rigid polyvinyl chloride (PVC) pipe or polypropylene (PP-R) pipe double-layer sleeve is used for ensuring the safety of gas transmission, so that the cost of soil repair can be saved, and the secondary harm of the soil caused by excessive ozone is reduced.
Description
Technical Field
The invention belongs to the technical field of agricultural soil remediation, and relates to an efficient ozone treatment device and method for remediating organic contaminated soil.
Technical Field
At present, a plurality of crops, especially vegetables and fruits, are greatly damaged by soil organic matters, especially pesticides, pesticide, chemical fertilizers and the like, and large-area fruit trees do not bloom, the fruits reduce yield and the like due to the damage of the organic matters in local areas, so that the agricultural output and the income of farmers are seriously influenced. The existing soil remediation method comprises the following steps: bioremediation methods, such as phytoremediation methods and in-situ bioremediation methods, are time-consuming, do not radically change soil organic matter pollution, and cannot achieve a permanent cure; chemical remediation methods, such as in-situ chemical leaching, solvent leaching technology, in-situ chemical oxidation, in-situ chemical reduction, reductive dechlorination and the like, have good effects, but have high treatment cost, and are easy to cause secondary pollution to the soil due to the residue of the oxidant in the treated soil; physical repair methods, such as steam leaching technology, solidification repair technology, physical separation repair, vitrification repair, thermodynamic repair, thermal desorption repair, electrodynamic repair and the like, have high treatment cost, and the treated soil can not be used for crop cultivation any more and is contrary to the goal of the national insist agriculture cultivation soil area bottom line immobility. By comprehensively analyzing the advantages and disadvantages of the soil remediation technologies, a new method which is more efficient, free of secondary pollution and low in treatment cost is urgently needed at present and is used for efficiently remedying the harm of soil organic matters.
Disclosure of Invention
The invention aims to provide a device and a method for efficiently repairing soil organic matter pollution in situ and reducing treatment cost.
The technical scheme of the invention is as follows: an efficient ozone treating apparatus for repairing the organic polluted soil is composed of an ozone generator consisting of control interface, ozone generator and gas outlet, and an underground gas pipeline with several gas outlets.
An ozone generator is arranged near the soil to be repaired, and a control interface of the ozone generator can display parameters such as ozone gas production rate, gas production time, pipeline pressure and the like.
The underground gas transmission pipeline is positioned 20-40mm below the surface soil.
The area relationship between the gas transmission capacity and the soil to be restored is as follows: for example, the ozone generator needs to produce 2.5-3.5m 3/min for 1 mu of land (about 20 m long and 30 m wide), and the exhaust pressure is 0.6 MPa. If the area of the soil to be repaired is less than 1 mu, the gas transmission amount can be gradually reduced according to the reduction of the area of the soil; if the area of the soil to be repaired is doubled, the gas transmission amount is doubled or 2 sets of ozone generators are selected for respective independent treatment.
The relationship between the gas production time and the concentration of organic matters in the soil to be repaired is as follows: taking 1 mu of land (about 20 meters long and 30 meters wide) as an example, the relationship between the specific gas production time and the concentration of organic matters in soil is shown in the following table:
| organic matter concentration (mg/L) | Gas production time |
| Greater than 600 | Produce gas for 50 minutes per hour, stop for 10 minutes, work for 12 hours per day |
| 600-300 | Gas is produced for 40 minutes per hour, the gas is stopped for 20 minutes, and the gas works for 12 hours per day |
| 300-100 | Produce gas for 30 minutes per hour, stop for 30 minutes, work for 12 hours per day |
| 100-80 | Produce gas for 20 minutes per hour, stop for 40 minutes, work for 12 hours per day |
| 80-10 | Produce gas for 10 minutes per hour, stop for 50 minutes, work for 12 hours per day |
| Less than 10 | Gas is produced for 10 minutes every 2 hours, the gas is stopped for 110 minutes, and the gas works for 12 hours every day |
The underground gas pipe adopts a sleeve design mode, the outer wall of the sleeve is a stainless steel pipe and has certain rigidity, and the inner lining of the sleeve is a hard polyvinyl chloride (PVC) pipe or a polypropylene (PP-R) pipe, so that the underground gas pipe has the characteristics of good corrosion resistance, easiness in perforation processing and the like.
The nominal diameter of the underground gas transmission pipe is DN40, namely the outer diameter of the pipeline is 45 mm.
The inner layer and the outer layer of the buried pipeline are provided with holes at corresponding positions, and the diameter range of the holes is 2-5 mm.
The invention has the advantages that: the characteristics of strong oxidative degradation of organic matters by ozone are utilized, but different from the traditional process, the air pipe is directly buried in the soil, the air transmission amount and the air generation time are designed by combining the polluted soil area and the concentration of organic pollutants, the safety of gas transmission is ensured by utilizing a stainless steel and hard polyvinyl chloride (PVC) pipe or polypropylene (PP-R) pipe double-layer sleeve, the cost of soil remediation can be saved, and the secondary harm of the soil caused by excessive ozone is reduced.
Detailed Description
FIG. 1 is a schematic structural diagram of a high-efficiency ozone treatment device for repairing organic contaminated soil.
An efficient ozone treatment device for repairing organic contaminated soil comprises an ozone generator 1 and a buried gas transmission pipeline 2, wherein the ozone generator 1 comprises a control interface 11, an ozone generating device 13 and a gas outlet 12, the gas outlet 13 of the ozone generator 1 is connected with a gas inlet 22 of the buried gas transmission pipeline 2, and the buried gas transmission pipeline 2 is provided with gas outlet holes 21 in different numbers.
An ozone generator 1 is arranged near soil to be repaired, and a control interface 11 of the ozone generator 1 can display parameters such as ozone gas production rate, gas production time, pipeline pressure and the like.
The underground gas transmission pipeline 2 is positioned 20-40mm below the surface soil.
The area relationship between the gas transmission capacity and the soil to be restored is as follows: for example, the ozone generator needs to produce 2.5-3.5m 3/min for 1 mu of land (about 20 m long and 30 m wide), and the exhaust pressure is 0.6 MPa. If the area of the soil to be repaired is less than 1 mu, the gas transmission amount can be gradually reduced according to the reduction of the area of the soil; if the area of the soil to be repaired is doubled, the gas transmission amount is doubled or 2 sets of ozone generators 1 are selected and respectively and independently treated.
The relationship between the gas production time and the concentration of organic matters in the soil to be repaired is as follows: taking 1 mu of land (about 20 meters long and 30 meters wide) as an example, the relationship between the specific gas production time and the concentration of organic matters in soil is shown in the following table:
| organic matter concentration (mg/L) | Gas production time |
| Greater than 600 | Produce gas for 50 minutes per hour, stop for 10 minutes, work for 12 hours per day |
| 600-300 | Gas is produced for 40 minutes per hour, the gas is stopped for 20 minutes, and the gas works for 12 hours per day |
| 300-100 | Produce gas for 30 minutes per hour, stop for 30 minutes, work for 12 hours per day |
| 100-80 | Produce gas for 20 minutes per hour, stop for 40 minutes, work for 12 hours per day |
| 80-10 | Produce gas for 10 minutes per hour, stop for 50 minutes, work for 12 hours per day |
| Less than 10 | Gas is produced for 10 minutes every 2 hours, the gas is stopped for 110 minutes, and the gas works for 12 hours every day |
The underground gas pipe 2 adopts a sleeve design mode, the outer wall of the sleeve is a stainless steel pipe and has certain rigidity, and the inner lining of the sleeve is a hard polyvinyl chloride (PVC) pipe or a polypropylene (PP-R) pipe, so that the underground gas pipe has the characteristics of good corrosion resistance, easy perforation processing and the like.
The nominal diameter of the underground gas transmission pipe 2 is DN40, namely the outer diameter of the pipe is 45 mm.
The inner layer and the outer layer of the buried pipeline 2 are provided with holes at corresponding positions, and the diameter range of the holes is 2-5 mm.
The invention has the advantages that: the characteristics of strong oxidative degradation of organic matters by ozone are utilized, but different from the traditional process, the air pipe is directly buried in the soil, the air transmission amount and the air generation time are designed by combining the polluted soil area and the concentration of organic pollutants, the safety of gas transmission is ensured by utilizing a stainless steel and hard polyvinyl chloride (PVC) pipe or polypropylene (PP-R) pipe double-layer sleeve, the cost of soil remediation can be saved, and the secondary harm of the soil caused by excessive ozone is reduced.
The above description is only a preferred embodiment of the present invention, and all the technical solutions and concepts according to the present invention should be covered by the protection scope of the present invention by equivalent substitutions or changes.
Claims (8)
1. An efficient ozone treatment device and method for repairing organic contaminated soil are characterized in that: an efficient ozone treating apparatus for repairing the organic polluted soil is composed of an ozone generator consisting of control interface, ozone generator and gas outlet, and an underground gas pipeline with several gas outlets.
2. An efficient ozone treatment apparatus and method for remediating organically-contaminated soil as set forth in claim 1: an ozone generator is arranged near the soil to be repaired, and a control interface of the ozone generator can display parameters such as ozone gas production rate, gas production time, pipeline pressure and the like.
3. An efficient ozone treatment apparatus and method for remediating organically-contaminated soil as set forth in claim 1: the underground gas transmission pipeline is positioned 20-40mm below the surface soil.
4. An efficient ozone treatment apparatus and method for remediating organically-contaminated soil as set forth in claim 1: the area relationship between the gas transmission capacity and the soil to be restored is as follows: for example, the ozone generator needs to produce 2.5-3.5m 3/min for 1 mu of land (about 20 m long and 30 m wide), and the exhaust pressure is 0.6 MPa. If the area of the soil to be repaired is less than 1 mu, the gas transmission amount can be gradually reduced according to the reduction of the area of the soil; if the area of the soil to be repaired is doubled, the gas transmission amount is doubled or 2 sets of ozone generators are selected for respective independent treatment.
5. An efficient ozone treatment apparatus and method for remediating organically-contaminated soil as set forth in claim 1: the relationship between the gas production time and the concentration of organic matters in the soil to be repaired is as follows: taking 1 mu of land (about 20 meters long and 30 meters wide) as an example, the relationship between the specific gas production time and the concentration of organic matters in soil is shown in the following table:
6. an efficient ozone treatment apparatus and method for remediating organically-contaminated soil as set forth in claim 1: the underground gas pipe adopts a sleeve design mode, the outer wall of the sleeve is a stainless steel pipe and has certain rigidity, and the inner lining of the sleeve is a hard polyvinyl chloride (PVC) pipe or a polypropylene (PP-R) pipe, so that the underground gas pipe has the characteristics of good corrosion resistance, easiness in perforation processing and the like.
7. An efficient ozone treatment apparatus and method for remediating organically-contaminated soil as set forth in claim 1: the nominal diameter of the underground gas transmission pipe is DN40, namely the outer diameter of the pipeline is 45 mm.
8. An efficient ozone treatment apparatus and method for remediating organically-contaminated soil as set forth in claim 1: the inner layer and the outer layer of the buried pipeline are provided with holes at corresponding positions, and the diameter range of the holes is 2-5 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811472487.8A CN111266399A (en) | 2018-12-04 | 2018-12-04 | Efficient ozone treatment device and method for repairing organic contaminated soil |
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| CN201811472487.8A CN111266399A (en) | 2018-12-04 | 2018-12-04 | Efficient ozone treatment device and method for repairing organic contaminated soil |
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| CN111266399A true CN111266399A (en) | 2020-06-12 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06238260A (en) * | 1993-02-15 | 1994-08-30 | Karuto Kk | Removal of soil contamination with organochlorine compound |
| US5753494A (en) * | 1995-09-29 | 1998-05-19 | Waste Management, Inc. | Method and apparatus for treating contaminated soils with ozone |
| JP2000325935A (en) * | 1999-04-28 | 2000-11-28 | It Group Inc:The | Ozone treatment of polluted soil |
| CN1415437A (en) * | 2002-12-16 | 2003-05-07 | 武汉大学 | Method for treating polluted soil and device |
| JP2008031135A (en) * | 2006-07-26 | 2008-02-14 | Yasunobu Yoshida | Method for oxidizing and sterilizing soil for agriculture and horticulture with ozone and apparatus therefor |
| CN106269837A (en) * | 2016-08-26 | 2017-01-04 | 北京航天环境工程有限公司 | The repair system of a kind of volatility organic polluted soil and method |
| CN106623403A (en) * | 2016-12-09 | 2017-05-10 | 安徽农业大学 | Soil repairing device |
| CN108188171A (en) * | 2018-02-12 | 2018-06-22 | 内蒙古睿达鑫科技有限责任公司 | A kind of organic contamination place in-situ oxidation repair system and renovation technique |
-
2018
- 2018-12-04 CN CN201811472487.8A patent/CN111266399A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06238260A (en) * | 1993-02-15 | 1994-08-30 | Karuto Kk | Removal of soil contamination with organochlorine compound |
| US5753494A (en) * | 1995-09-29 | 1998-05-19 | Waste Management, Inc. | Method and apparatus for treating contaminated soils with ozone |
| JP2000325935A (en) * | 1999-04-28 | 2000-11-28 | It Group Inc:The | Ozone treatment of polluted soil |
| CN1415437A (en) * | 2002-12-16 | 2003-05-07 | 武汉大学 | Method for treating polluted soil and device |
| JP2008031135A (en) * | 2006-07-26 | 2008-02-14 | Yasunobu Yoshida | Method for oxidizing and sterilizing soil for agriculture and horticulture with ozone and apparatus therefor |
| CN106269837A (en) * | 2016-08-26 | 2017-01-04 | 北京航天环境工程有限公司 | The repair system of a kind of volatility organic polluted soil and method |
| CN106623403A (en) * | 2016-12-09 | 2017-05-10 | 安徽农业大学 | Soil repairing device |
| CN108188171A (en) * | 2018-02-12 | 2018-06-22 | 内蒙古睿达鑫科技有限责任公司 | A kind of organic contamination place in-situ oxidation repair system and renovation technique |
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