CN110465543A - A kind of hot restorative procedure of organic polluted soil - Google Patents
A kind of hot restorative procedure of organic polluted soil Download PDFInfo
- Publication number
- CN110465543A CN110465543A CN201810447053.6A CN201810447053A CN110465543A CN 110465543 A CN110465543 A CN 110465543A CN 201810447053 A CN201810447053 A CN 201810447053A CN 110465543 A CN110465543 A CN 110465543A
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- China
- Prior art keywords
- soil
- organic
- organic polluted
- polluted soil
- restorative procedure
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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
- B09C1/06—Reclamation of contaminated soil thermally
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention relates to organic polluted soil repair field, and in particular to be a kind of organic polluted soil hot restorative procedure.Present invention aims to overcome that losing big problem using the energy consumption height and the soil organism that face when heating renovation of organic pollution soil at present.Implementation process of the present invention is as follows: by contaminated soil, soil remediation reactor is added in biological material after mixing according to a certain percentage, moisture is removed under warm air blowoff first, when moisture content drops to certain proportion, open deaerator, deaerator generates oxygen and nitrogen, the nitrogen of generation heats in gas heater and is passed into soil remediation reactor, organic pollutant in soil carbonizes under a nitrogen atmosphere, nitrogen closed cycle heating, the volatile components that soil remediation reactor generates gas after absorption tower is absorbed by liquid absorption empties.The present invention can quick renovation of organic pollution serious soil, be with a wide range of applications.
Description
Technical field:
The invention patent relates to organic polluted soil repair field, and in particular to be a kind of organic polluted soil hot repair
Compound method.
Background technique:
Summary of the invention:
Thermal desorption renovation of organic pollution soil deviates from organic pollutant using high temperature, this needs very high temperature to heat soil
Earth, energy consumption is higher, is unfavorable for energy conservation.On the other hand, temperature is higher, and soil destruction of organic material itself is more serious, the content of organic matter
Lower, the value that the soil after reparation recycles is lower.Therefore using alap temperature be using heating means and
By organic pollutant or add the developing direction that biological carbon material increase soil organic matter content is renovation of organic pollution soil.
The purpose of the invention patent, which is that, overcomes disadvantage mentioned above, provides a kind of method for organic polluted soil reparation.
It is as follows that the invention patent solves technical solution used by its technical problem:
Reactor, soil first 50~150 is added in contaminated soil, biological material after mixing according to a certain percentage
DEG C moisture is removed under warm air blowoff；When moisture content drops to 10% or less, deaerator is opened, seperator generates
Oxygen and nitrogen, the nitrogen of generation are heated to 151~550 DEG C in gas heater, into soil remediation reactor, in soil
Biological carbon material and organic pollutant carbonized under the conditions of inert nitrogen gas, nitrogen closed cycle heating, when anti-
When device pressure being answered to reach setting pressure at expulsion, the gas for reacting generation then enters absorption tower；Deaerator generate oxygen into
Enter absorption tower, the volatile component that the moisture content and heating process that reactor generates generate gas after absorption tower is absorbed by liquid absorption is arranged
It is empty.Organic pollutant in the soil is carbonized and is removed, and the charing of biomass can increase soil organic matter content, subtract
Few hot repair is multiple to destroy bring influence to the soil organism.Carbonization reaction terminates repair process after a certain period of time, and temperature is down to room
Temperature, soil remediation are completed.
The present invention is equipped with air transformation screening plant, and transformation screening plant can provide nitrogen guarantor for soil remediation reactor
Shield solves organic pollutant in heating kiln, the danger of combustion explosion occurs in the presence of oxygen, while nitrogen circulation circulation makes
With it is high to solve the problems, such as that hot repair reactivation consumes.The gas vent of soil remediation reactor is provided with counterbalance valve, can set reactor
The pressure of interior gas evolution solves the problems, such as that reactor pressure increases caused equipment safety and gas leakage problem, while can be with
Reduce energy consumption.The oxygen that air separation generates is passed through absorption column of gas and oxidation reaction occurs with thermogenetic volatile components are added,
Increase the efficiency of removing Gaseous Organic Pollutant.Solves the problems, such as the emergent gas pollution environment that heat treatment generates.This hair
Bright Patent design is reasonable, and saving energy, lowering energy consumption and reducing pollutants discharge are conducive to large-scale promotion application.
Detailed description of the invention:
Fig. 1 is the hot repair apparatus for coating schematic diagram that the invention patent attached drawing is a kind of organic polluted soil.
Label 1 in figure is air separator, and 2 be gas heater, and 3 be soil remediation reactor, and 4 be gas buffer
Tank, 5 be absorption column of gas, and 6 be absorption liquid storage tank.
Specific embodiment:
Embodiment 1
Reactor is added in oil-polluted soils 1Kg, wheat stalk material 50g after mixing, oil-polluted soils
Organic pollutant content is 98g/Kg, soil organic matter content 2.7%.150 DEG C first of soil mixture in warm air blowoff
Lower removing moisture；When moisture content drops to 10% or less, deaerator is opened, seperator generates oxygen and nitrogen, produces
Raw nitrogen is passed through soil mixture after heating in gas heater, 550 DEG C of soil mixture are reacted 1 hour.In soil
Organic pollutant falls to 0.88g/Kg, and removal efficiency 99.1%, soil organic matter content 3.2%, the soil moisture is down to
It repairs and completes after room temperature.
Embodiment 2
Reactor is added in polycyclic aromatic hydrocarbon pollution 1Kg, rice straw material 150g after mixing, polycyclic aromatic hydrocarbon exists
The total content of contaminated soil is 1.81g/Kg, soil organic matter content 4.3%.100 DEG C first of soil mixture in hot-air
Purging is lower to remove moisture；When moisture content drops to 10% or less, deaerator is opened, seperator generates oxygen and nitrogen
Gas, the nitrogen of generation are passed through soil mixture after heating in gas heater, soil mixture reacts 1 hour at 151 DEG C,
Then it is reacted 2 hours at 350 DEG C.Polycyclic aromatic hydrocarbon pollutant total content in soil falls to 0.065g/Kg, and removal efficiency is
96.4%, soil organic matter content 5.1%, the soil moisture is cooled to room temperature reparation and completes.
Embodiment 3
Reactor is added in oil-polluted soils 1Kg, corn stover material 300g after mixing, oil-polluted soils
Organic pollutant content is 76g/Kg, soil organic matter content 3.2%.50 DEG C first of soil mixture under warm air blowoff
Remove moisture；When moisture content drops to 10% or less, deaerator is opened, seperator generates oxygen and nitrogen, generates
Nitrogen heated in gas heater after be passed through soil mixture, soil mixture reacts 1 hour at 151 DEG C, then exists
400 DEG C are reacted 4 hours.Organic pollutant in soil falls to 0.53g/Kg, and removal efficiency 99.3%, the soil organism contains
Amount is 6.7%, and the soil moisture is cooled to room temperature reparation and completes.
Claims (6)
1. a kind of hot restorative procedure of organic polluted soil, it is characterised in that: organic polluted soil, biological material are according to certain
Ratio heats under air and nitrogen atmosphere in soil remediation reactor respectively after mixing, by not volatile organic dirt
Contaminate object charing.
2. a kind of hot restorative procedure of organic polluted soil according to claim 1, which is characterized in that soil remediation reaction
Air-separating plant needed for device is pressure-variable adsorption screening plant.
3. a kind of hot restorative procedure of organic polluted soil according to claim 1, which is characterized in that soil remediation reaction
Device gas vent is provided with counterbalance valve.
4. a kind of hot restorative procedure of organic polluted soil according to claim 1, which is characterized in that biological material adds
The mass ratio entered into organic polluted soil is 5%~30%.
5. a kind of hot restorative procedure of organic polluted soil according to claim 1, which is characterized in that air heating temperature
It is 50~150 DEG C, nitrogen heating temperature is 151~550 DEG C.
6. a kind of hot restorative procedure of organic polluted soil according to claim 4, which is characterized in that contaminated soil is in soil
Repair time in earth reparation reactor is 1~5 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810447053.6A CN110465543A (en) | 2018-05-11 | 2018-05-11 | A kind of hot restorative procedure of organic polluted soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810447053.6A CN110465543A (en) | 2018-05-11 | 2018-05-11 | A kind of hot restorative procedure of organic polluted soil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110465543A true CN110465543A (en) | 2019-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810447053.6A Pending CN110465543A (en) | 2018-05-11 | 2018-05-11 | A kind of hot restorative procedure of organic polluted soil |
Country Status (1)
| Country | Link |
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| CN (1) | CN110465543A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113369294A (en) * | 2021-06-10 | 2021-09-10 | 上海环土环境科技有限公司 | Polluted soil ex-situ low-carbon circulating thermal desorption system |
| CN115121597A (en) * | 2022-06-29 | 2022-09-30 | 国网河北省电力有限公司电力科学研究院 | Vehicle-mounted van-type continuous microwave soil solid waste treatment equipment |
-
2018
- 2018-05-11 CN CN201810447053.6A patent/CN110465543A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113369294A (en) * | 2021-06-10 | 2021-09-10 | 上海环土环境科技有限公司 | Polluted soil ex-situ low-carbon circulating thermal desorption system |
| CN115121597A (en) * | 2022-06-29 | 2022-09-30 | 国网河北省电力有限公司电力科学研究院 | Vehicle-mounted van-type continuous microwave soil solid waste treatment equipment |
| CN115121597B (en) * | 2022-06-29 | 2023-08-22 | 国网河北省电力有限公司电力科学研究院 | Vehicle-mounted van-type continuous microwave soil solid waste treatment equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191119 |
|
| WD01 | Invention patent application deemed withdrawn after publication |