CN112387769A - Micro negative pressure collecting and processing system for contaminated soil ex-situ remediation engineering - Google Patents
Micro negative pressure collecting and processing system for contaminated soil ex-situ remediation engineering Download PDFInfo
- Publication number
- CN112387769A CN112387769A CN202011073736.3A CN202011073736A CN112387769A CN 112387769 A CN112387769 A CN 112387769A CN 202011073736 A CN202011073736 A CN 202011073736A CN 112387769 A CN112387769 A CN 112387769A
- Authority
- CN
- China
- Prior art keywords
- negative pressure
- micro
- waste gas
- pressure collecting
- collecting
- 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
-
- 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
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2206/00—Waste heat recuperation
- F23G2206/10—Waste heat recuperation reintroducing the heat in the same process, e.g. for predrying
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2206/00—Waste heat recuperation
- F23G2206/20—Waste heat recuperation using the heat in association with another installation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/14—Gaseous waste or fumes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2900/00—Special features of, or arrangements for incinerators
- F23G2900/50213—Preheating processes other than drying or pyrolysis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2219/00—Treatment devices
- F23J2219/30—Sorption devices using carbon, e.g. coke
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Treating Waste Gases (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a micro-negative pressure collecting and treating system for polluted soil ex-situ remediation engineering. An induced air channel and an induced air device are arranged between the upper-layer structure and the lower-layer structure of the micro negative pressure collecting shed, and a grid is laid between the induced air channel and the lower-layer structure; the waste gas treatment device comprises a heat accumulating type incinerator, the induced draft fan is connected with a heat accumulating bed through a wind collecting pipe, the heat accumulating bed is connected with a combustion chamber, the combustion chamber is connected with the heat accumulating bed through a circulating pipeline, and the combustion chamber is connected with a micro negative pressure collecting shed through a heat exchanger; the heat exchange chamber is connected with an active carbon adsorption device, and the active carbon adsorption device is connected with a micro-negative pressure collecting shed; the percolate collecting system comprises an anti-seepage foundation ground, ground cement concrete, a fence and a percolate guide and drainage system. The micro-negative pressure collecting shed can avoid the escape of volatile gas and malodorous gas when the polluted soil is stacked, prevent secondary pollution in the repair period and reduce the health hazard of constructors.
Description
Technical Field
The invention relates to the field of soil remediation, in particular to a micro-negative pressure collecting and treating system for contaminated soil ex-situ remediation engineering.
Background
Soil pollution refers to the phenomenon that certain substances enter surface soil of land due to human factors, so that the chemical, physical and biological characteristics of the soil are changed, the functions and effective utilization of the soil are influenced, the public health is harmed, or the ecological environment is damaged. In recent years, the development of industry and manufacturing industry is rapid, the development of socioeconomic is promoted, the accompanying environmental problems are gradually exposed, the exhaust gas and industrial waste water are discharged randomly, the solid waste is not treated reasonably, the safety utilization of soil and water sources is seriously polluted, and the health and safety of human beings are harmed. Aiming at the current soil environment problem, the government of China continues to produce a plurality of laws and regulations and industrial standard specifications, and scientific research personnel are encouraged to develop research, popularization and application of soil remediation technology. The ectopic remediation technology is favored by scientific research personnel as a site for disposing polluted sites, which is high in pollutant concentration, large in environmental risk and small in remediation amount, but before the ectopic remediation technology is developed, polluted soil needs to be excavated to a specified remediation position, pollutants in the polluted sites in petrochemical industry, pesticide industry and coking industry are generally volatile or semi-volatile organic pollutants and are often accompanied by odor, and the research on secondary pollution and prevention and treatment problems in the remediation process is of great importance.
Related works have been developed on domestic secondary pollution and prevention and treatment work for ex-situ remediation of polluted sites, such as CN 201911239297, an in-situ ex-situ remediation system and method for irritant odor sites. The common technology for restoring the ectopic soil comprises ectopic thermal desorption, ectopic chemical oxidation/reduction, ectopic chemical leaching and the like, the soil polluted by the soil to be treated is sent to a closed greenhouse or a container for crushing, screening and the like during general pretreatment stacking, the closed greenhouse of a stacking yard is simply arranged, waste gas is easy to escape when the polluted soil is concentrated into the greenhouse, the waste gas in the greenhouse is easy to accumulate to cause secondary pollution to the environment, and the health of constructors is harmed. The research and development of the waste gas collection and matched disposal system of the ectopic repair technology are of great significance for solving the problem of waste gas pollution prevention and control of the piling yard.
Disclosure of Invention
The invention provides a micro-negative pressure collecting and disposing system for polluted soil ex-situ remediation engineering, aiming at solving the pollution problems of waste gas dissipation and the like during ex-situ soil remediation and stacking.
In order to achieve the above purpose, the invention provides the following technical scheme:
a micro negative pressure collecting and processing system for polluted soil ex-situ remediation engineering comprises a waste gas micro negative pressure collecting shed and a waste gas disposal device; the waste gas treatment device comprises a heat accumulating type incinerator, an induced draft fan A, an induced draft fan B and a dust removal device, the heat accumulating chamber incinerator comprises a heat accumulating chamber A, a heat accumulating chamber B and a combustion chamber, one end of the induced draft fan A is connected with the dust removal device, and the other end of the induced draft fan A is connected with the heat accumulating chamber A of the heat accumulating type incinerator through a wind collecting pipe; the heat storage chamber A is connected with the combustion chamber, the combustion chamber is connected with the heat storage chamber B, the heat storage chamber B is connected with the heat exchanger through the draught fan B, the heat exchanger is connected with the condensing tower, the condensing tower is connected with the activated carbon adsorption device through the draught fan C, the activated carbon adsorption device is connected with the waste gas micro-negative pressure collecting shed, and the activated carbon adsorption device is also connected with the tail gas discharge tower; the waste gas micro-negative pressure collecting shed comprises an upper layer structure and a lower layer structure; an induced draft channel and an induced draft device are arranged between the upper layer structure and the lower layer structure, a grid is laid between the induced draft channel and the lower layer structure, and a filter screen and an active carbon adsorption layer are sequentially laid on the grid; the bottom of the waste gas micro-negative pressure collecting shed is provided with a percolate collecting system, and the percolate collecting system comprises an anti-seepage base surface, ground cement concrete, a fence and percolate guide and discharge.
Furthermore, a regenerative bed is arranged in the regenerative chamber A and the regenerative chamber B, and the regenerative bed is connected with the combustion chamber through a circulating pipeline.
Furthermore, the upper layer structure of the micro-negative pressure collecting shed is provided with an air inducing port.
Further, HDPE films, geotextiles, fine sand and medium coarse sand are paved on the anti-seepage foundation surface from bottom to top. And excavating the anti-seepage foundation downwards to a certain depth, and tamping the foundation. The ground cement concrete is laid on the medium coarse sand and is poured into a whole by adopting reinforced concrete, so that secondary pollution caused by infiltration of the percolate is prevented. The enclosure and the ground cement concrete are poured at a certain height simultaneously, so that stacked soil is prevented from scattering and percolate is prevented from diffusing to the periphery, and meanwhile, the enclosure can be used as a foundation of a micro-negative pressure collecting shed to fix the collecting shed.
Furthermore, the percolate guide and drainage system is divided into two types, firstly, collecting pipes are transversely and longitudinally arranged between the cement concrete and the geotextile, and firstly, the gradient of ground pouring is controlled when the cement concrete is poured. The percolate guide and drainage system is divided into two types, firstly, collecting pipes are transversely and longitudinally arranged between cement concrete and geotextile, and firstly, the gradient of ground pouring is controlled when the cement concrete is poured. The percolate after drainage is collected in a centralized manner in a closed waste liquid pool, and is uniformly treated to reach the standard and discharged
Further, the heat exchanger is connected with a cold water pipeline and a hot water pipeline; the condenser is connected with a circulating water pipe.
A micro-negative pressure collecting and processing process for contaminated soil ex-situ remediation engineering comprises the following process steps:
step 1, piling soil into a waste gas micro-negative pressure collecting shed; the waste gas is treated by a micro negative pressure collecting system,
step 2, the treatment process of the waste gas treatment comprises the following steps: waste gas is sent into a wind collecting pipe through a draught fan and sent to a heat storage bed for preheating, the preheated waste gas is sent into a combustion chamber for high-temperature oxidative decomposition, part of heat energy generated by decomposed high-temperature tail gas is used for heating the heat storage bed, and the rest part of the heat energy enters a heat exchanger;
and 3, treating the gas by the heat exchanger, then entering a condensing tower, then entering an activated carbon adsorption device, sending part of the gas reaching the standard into a micro-negative pressure collection shed to maintain gas balance, and directly discharging the rest gas in an unorganized discharge mode.
Further, the soil waste gas is pretreated in the soil waste gas micro-negative pressure collection shed: regulating the water content of the polluted soil, crushing, screening and drying; then mechanically stirring and mixing the soil and the medicament.
Further, the filtrate of the soil in the step 1 is connected with a leachate collecting system through a pipeline, and then is discharged after reaching the standard through water treatment.
The working principle of the invention is as follows: the micro-negative pressure collecting shed is of an upper layer structure and a lower layer structure, the lower layer structure is used for preprocessing of stacking, crushing, screening, drying and the like of the polluted soil, and the upper layer structure is used for collecting waste gas. An induced draft channel and an induced draft device are arranged between the upper layer structure and the lower layer structure, a grid is laid between the induced draft channel and the lower layer structure, and a filter screen and an active carbon adsorption layer are laid on the grid in sequence and used for isolating dust and waste gas pretreatment. Waste gas treatment device adopts the heat accumulation formula to burn burning furnace, and waste gas sends into the collection tuber pipe through the draught fan and sends to the heat accumulation bed and preheat, and the waste gas after preheating sends into combustion chamber high temperature oxidation and decomposes, and the heat energy that the tail gas produced after the decomposition is partly used for the heating of heat accumulation bed, and partly is used for polluting the drying of soil in sending to little negative pressure collection canopy through the heat exchanger. High temperature tail gas passes through heat exchanger, condensing tower, active carbon adsorption device after up to standard, and the gas part of up to standard sends into and keeps gaseous balance in the little negative pressure collection canopy, and the remainder directly adopts the form of unorganized emission to arrange outward. The ground cement concrete is laid on the medium coarse sand and poured into a whole by adopting reinforced concrete, so that secondary pollution caused by infiltration of the percolate is prevented. The enclosure and the ground cement concrete are poured at a certain height simultaneously, so that stacked soil is prevented from scattering and percolate is prevented from diffusing all around, and meanwhile, the enclosure can be used as a foundation of a micro-negative pressure collecting shed to fix the collecting shed. The percolate guide and drainage system is divided into two types, firstly, collecting pipes are transversely and longitudinally arranged between cement concrete and geotextile, and firstly, the gradient of ground pouring is controlled when the cement concrete is poured. And after drainage, the percolate is collected in a closed waste liquid pool in a centralized manner, and is uniformly treated and discharged up to the standard.
The invention has the following beneficial effects:
(1) the micro-negative pressure collecting shed can avoid the escape of volatile gas and malodorous gas when the polluted soil is stacked, prevent secondary pollution in the repair period and reduce the health hazard of constructors.
(2) The collected waste gas treatment heat energy can be used for drying the polluted soil, so that the energy consumption is reduced, and the repair cost is reduced. Through controlling the amount of waste gas sent into the micro-negative pressure collection shed after the waste gas reaches the standard after being treated, the gas balance in the shed is maintained, the collection shed can be always in a micro-negative pressure state, volatile gas in soil can be volatilized in an accelerated manner, and the cost of repairing is reduced.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic view of the exhaust micro-negative pressure collector of the present invention;
FIG. 4 is a schematic view of the leachate collection system of the present invention;
fig. 5 is a cross-sectional view of an impermeable base.
Wherein: the system comprises a waste gas micro-negative pressure collecting shed 100, a regenerative incinerator 1, an induced draft fan A2, an induced draft fan B3, a dust removal device 4, a regenerative chamber A5, a regenerative chamber B6, a combustion chamber 7, a heat exchanger 8, a condensing tower 9, an induced draft fan C10, an activated carbon adsorption device 11, a tail gas discharge tower 12, an induced draft channel 13, an induced draft device 14, a grid 15, a percolate collecting system 16, an impermeable base surface 17, ground cement concrete 18, a fence 19, a percolate guide and discharge 20, an induced draft port 21, an HDPE (high-density polyethylene) film 22, geotextile 23, fine sand 24, medium coarse sand 25 and a percolate collecting pool 26.
Detailed Description
The present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the invention and not as limiting the scope of the invention.
Example 1
As shown in fig. 1 to 4, a micro negative pressure collecting and treating system for contaminated soil ex-situ remediation engineering comprises a waste gas micro negative pressure collecting shed 100 and a waste gas disposal device; the waste gas treatment device comprises a regenerative incinerator 1, an induced draft fan A2, an induced draft fan B3 and a dust removal device 4, the regenerative chamber incinerator comprises a regenerative chamber A5, a regenerative chamber B6 and a combustion chamber 7, one end of the induced draft fan A is connected with the dust removal device, and the other end of the induced draft fan A is connected with the regenerative chamber A of the regenerative incinerator through a wind collecting pipe; the regenerator A is connected with the combustion chamber, the combustion chamber is connected with the regenerator B, regenerator beds are arranged in the regenerator A and the regenerator B, and the regenerator beds are connected with the combustion chamber through a circulating pipeline. The heat storage chamber B is connected with a heat exchanger 8 through an induced draft fan B, the heat exchanger is connected with a condensing tower 9, the condensing tower is connected with an activated carbon adsorption device 11 through an induced draft fan C10, the activated carbon adsorption device is connected with a waste gas micro-negative pressure collecting shed, and the activated carbon adsorption device is also connected with a tail gas discharge tower 12; the waste gas micro-negative pressure collecting shed comprises an upper layer structure and a lower layer structure; an induced draft channel 13 and an induced draft device 14 are arranged between the upper layer structure and the lower layer structure, a grid 15 is laid between the induced draft channel and the lower layer structure, and a filter screen and an active carbon adsorption layer are sequentially laid on the grid; the bottom of the waste gas micro-negative pressure collecting shed is provided with a percolate collecting system 16, and the percolate collecting system comprises an impermeable base surface 17, ground cement concrete 18, a fence 19 and a percolate guide and discharge 20. Wherein, the canopy is collected to little negative pressure uses to enclose the fender basis, adopts the steel construction to build two-layer from top to bottom, separates and reserves induced air passageway between two-layer. And a grid is laid between the induced air channel and the lower layer structure, and a filter screen and an active carbon adsorption layer are laid on the grid in sequence and used for isolating dust and waste gas pretreatment. The upper layer structure of the micro negative pressure collecting shed is provided with an induced draft port 21, an induced draft channel 13 is connected with an induced draft device 14, and waste gas of each channel is sent to a waste gas treatment device. And a fresh air supplement channel is reserved at the lap joint of the lower layer structure and the enclosure to maintain the gas balance of the micro-negative pressure collecting shed.
The percolate guide and drainage system is divided into two types, firstly, collecting pipes are transversely and longitudinally arranged between cement concrete and geotextile, and firstly, the gradient of ground pouring is controlled when the cement concrete is poured. The percolate after drainage is collected in a centralized manner in a closed waste liquid pool, and is uniformly treated to reach the standard and discharged
The heat exchanger is connected with a cold water pipeline and a hot water pipeline; the condenser is connected with a circulating water pipe.
The waste gas (arrow in the figure) enters the dust removal device for dust removal and then enters the combustion chamber for combustion, and air (arrow in the figure) is supplemented in the combustion chamber. Circulating water (arrows in the figure) is added into the condensation tower.
Waste gas in the micro-negative pressure collecting shed is sent into the air collecting pipe through the draught fan and sent to the heat storage bed for preheating, the preheated waste gas is sent into the combustion chamber for high-temperature oxidative decomposition, a part of heat energy generated by the decomposed tail gas is used for heating the heat storage bed, and a part of heat energy is sent into the micro-negative pressure collecting shed through the heat exchanger for drying polluted soil. High temperature tail gas passes through heat exchanger postcondensation tower, active carbon adsorption device and later reaches standard, and the gas some of reaching standard sends into the interior maintenance gas balance of little negative pressure collection canopy, and the remainder adopts the direct outer row of unorganized form of discharging.
Example 2
The system of embodiment 1 is used for the polluted soil ex-situ remediation engineering, and the micro negative pressure collection treatment process comprises the following process steps:
step 1, piling soil into a waste gas micro-negative pressure collecting shed; the waste gas is treated by a micro negative pressure collecting system,
step 2, the treatment process of the waste gas treatment comprises the following steps: waste gas is sent into a wind collecting pipe through a draught fan and sent to a heat storage bed for preheating, the preheated waste gas is sent into a combustion chamber for high-temperature oxidative decomposition, part of heat energy generated by decomposed high-temperature tail gas is used for heating the heat storage bed, and the rest part of the heat energy enters a heat exchanger;
and 3, treating the gas by the heat exchanger, then entering a condensing tower, then entering an activated carbon adsorption device, sending part of the gas reaching the standard into a micro-negative pressure collection shed to maintain gas balance, and directly discharging the rest gas in an unorganized discharge mode.
The soil waste gas micro-negative pressure collection shed is pretreated by the following steps: regulating the water content of the polluted soil, crushing, screening and drying; then mechanically stirring and mixing the soil and the medicament.
And (3) connecting the filtrate of the soil in the step (1) with a leachate collecting system through a pipeline, and then discharging the leachate after the water treatment reaches the standard.
The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and such improvements and modifications are also considered to be within the scope of the present invention.
Claims (8)
1. The utility model provides a little negative pressure is collected and processing system for polluting soil dystopy repair engineering which characterized in that:
comprises a waste gas micro-negative pressure collecting shed and a waste gas disposal device; the waste gas treatment device comprises a heat accumulating type incinerator, an induced draft fan A, an induced draft fan B and a dust removal device, the heat accumulating chamber incinerator comprises a heat accumulating chamber A, a heat accumulating chamber B and a combustion chamber, one end of the induced draft fan A is connected with the dust removal device, and the other end of the induced draft fan A is connected with the heat accumulating chamber A of the heat accumulating type incinerator through a wind collecting pipe; the heat storage chamber A is connected with the combustion chamber, the combustion chamber is connected with the heat storage chamber B, the heat storage chamber B is connected with the heat exchanger through the draught fan B, the heat exchanger is connected with the condensing tower, the condensing tower is connected with the activated carbon adsorption device through the draught fan C, the activated carbon adsorption device is connected with the waste gas micro-negative pressure collecting shed, and the activated carbon adsorption device is also connected with the tail gas discharge tower; the waste gas micro-negative pressure collecting shed comprises an upper layer structure and a lower layer structure; an induced draft channel and an induced draft device are arranged between the upper layer structure and the lower layer structure, a grid is laid between the induced draft channel and the lower layer structure, and a filter screen and an active carbon adsorption layer are sequentially laid on the grid; the bottom of the waste gas micro-negative pressure collecting shed is provided with a percolate collecting system, and the percolate collecting system comprises an anti-seepage base surface, ground cement concrete, a fence and percolate guide and discharge.
2. The micro negative pressure collecting and treating system for the ex-situ remediation engineering of contaminated soil according to claim 1, wherein: and heat storage beds are arranged in the heat storage chamber A and the heat storage chamber B and are connected with the combustion chamber through a circulating pipeline.
3. The micro negative pressure collecting and treating system for the ex-situ remediation engineering of contaminated soil according to claim 1, wherein: the upper layer structure of the micro negative pressure collecting shed is provided with an air inducing port.
4. The micro negative pressure collecting and treating system for the ex-situ remediation engineering of contaminated soil according to claim 1, wherein: HDPE films, geotextiles, fine sand and medium coarse sand are paved on the anti-seepage foundation surface from bottom to top.
5. The micro negative pressure collecting and treating system for the ex-situ remediation engineering of contaminated soil according to claim 1, wherein: the heat exchanger is connected with a cold water pipeline and a hot water pipeline; the condenser is connected with a circulating water pipe.
6. A micro negative pressure collecting and treating process for polluted soil ex-situ remediation engineering is characterized by comprising the following steps of:
step 1, piling soil into a waste gas micro-negative pressure collecting shed; the waste gas is treated by a micro negative pressure collecting system,
step 2, the treatment process of the waste gas treatment comprises the following steps: waste gas is sent into a wind collecting pipe through a draught fan and sent to a heat storage bed for preheating, the preheated waste gas is sent into a combustion chamber for high-temperature oxidative decomposition, part of heat energy generated by decomposed high-temperature tail gas is used for heating the heat storage bed, and the rest part of the heat energy enters a heat exchanger;
and 3, treating the gas by the heat exchanger, then entering a condensing tower, then entering an activated carbon adsorption device, sending part of the gas reaching the standard into a micro-negative pressure collection shed to maintain gas balance, and directly discharging the rest gas in an unorganized discharge mode.
7. The process of claim 3, wherein: the soil waste gas micro-negative pressure collection shed is pretreated by the following steps: regulating the water content of the polluted soil, crushing, screening and drying; then mechanically stirring and mixing the soil and the medicament.
8. The micro negative pressure collecting and treating system for the polluted soil ex-situ remediation engineering of claim 3, wherein: and (3) connecting the filtrate of the soil in the step (1) with a leachate collecting system through a pipeline, and then discharging the leachate after the water treatment reaches the standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011073736.3A CN112387769A (en) | 2020-09-30 | 2020-09-30 | Micro negative pressure collecting and processing system for contaminated soil ex-situ remediation engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011073736.3A CN112387769A (en) | 2020-09-30 | 2020-09-30 | Micro negative pressure collecting and processing system for contaminated soil ex-situ remediation engineering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112387769A true CN112387769A (en) | 2021-02-23 |
Family
ID=74596122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011073736.3A Pending CN112387769A (en) | 2020-09-30 | 2020-09-30 | Micro negative pressure collecting and processing system for contaminated soil ex-situ remediation engineering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112387769A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113680806A (en) * | 2021-07-28 | 2021-11-23 | 湖南钦杰环保科技有限公司 | Environment-friendly municipal polluted soil remediation system and use method thereof |
| CN114192537A (en) * | 2021-11-23 | 2022-03-18 | 中国葛洲坝集团生态环境工程有限公司 | Smoke collecting device for excavation surface of elemental phosphorus-containing polluted soil |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102218446A (en) * | 2011-05-09 | 2011-10-19 | 北京生态岛科技有限责任公司 | Thermal desorption method for contaminated soil |
| CN103203355A (en) * | 2013-04-12 | 2013-07-17 | 江苏大地益源环境修复有限公司 | Ectopic thermal desorption treatment method of polluted soil |
| CN105080957A (en) * | 2015-09-18 | 2015-11-25 | 中国科学院武汉岩土力学研究所 | Afterheat-recycled contaminated soil thermal desorption repair system |
| CN106180169A (en) * | 2016-08-31 | 2016-12-07 | 广西博世科环保科技股份有限公司 | A kind of Soil Thermal desorption renovation technique and equipment |
| CN206469273U (en) * | 2017-01-17 | 2017-09-05 | 恩国环保科技（上海）有限公司 | A kind of organic waste gas treatment device |
| CN107234130A (en) * | 2017-06-30 | 2017-10-10 | 天津环科立嘉环境修复科技有限公司 | Organic polluted soil chemical oxidation repair system and its method |
| CN207501170U (en) * | 2017-09-26 | 2018-06-15 | 上海履诚环境科技有限公司 | Regenerative catalytic combustion device |
| CN108237143A (en) * | 2018-01-24 | 2018-07-03 | 鸿灌环境技术有限公司 | A kind of low energy consumption organic polluted soil dystopy thermal desorption processes |
| CN108817062A (en) * | 2018-06-28 | 2018-11-16 | 上海环境工程设计研究院有限公司 | Indirect thermal desorption device for organic polluted soil showering |
| CN109433814A (en) * | 2018-11-30 | 2019-03-08 | 浙江宜可欧环保科技有限公司 | Soil heterotopic restorative procedure and its device based on pyrolysis desorption |
| CN110064646A (en) * | 2019-06-05 | 2019-07-30 | 上海市城市建设设计研究总院（集团）有限公司 | The integrated soil repair system of movable type |
| CN209363277U (en) * | 2018-09-20 | 2019-09-10 | 北京市地质工程设计研究院 | A kind of organic polluted soil reparation heap body hypothermia thermal desorption device |
| CN110614266A (en) * | 2019-09-26 | 2019-12-27 | 中科鼎实环境工程有限公司 | Heap thermal desorption treatment system for repairing organic contaminated soil |
-
2020
- 2020-09-30 CN CN202011073736.3A patent/CN112387769A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102218446A (en) * | 2011-05-09 | 2011-10-19 | 北京生态岛科技有限责任公司 | Thermal desorption method for contaminated soil |
| CN103203355A (en) * | 2013-04-12 | 2013-07-17 | 江苏大地益源环境修复有限公司 | Ectopic thermal desorption treatment method of polluted soil |
| CN105080957A (en) * | 2015-09-18 | 2015-11-25 | 中国科学院武汉岩土力学研究所 | Afterheat-recycled contaminated soil thermal desorption repair system |
| CN106180169A (en) * | 2016-08-31 | 2016-12-07 | 广西博世科环保科技股份有限公司 | A kind of Soil Thermal desorption renovation technique and equipment |
| CN206469273U (en) * | 2017-01-17 | 2017-09-05 | 恩国环保科技（上海）有限公司 | A kind of organic waste gas treatment device |
| CN107234130A (en) * | 2017-06-30 | 2017-10-10 | 天津环科立嘉环境修复科技有限公司 | Organic polluted soil chemical oxidation repair system and its method |
| CN207501170U (en) * | 2017-09-26 | 2018-06-15 | 上海履诚环境科技有限公司 | Regenerative catalytic combustion device |
| CN108237143A (en) * | 2018-01-24 | 2018-07-03 | 鸿灌环境技术有限公司 | A kind of low energy consumption organic polluted soil dystopy thermal desorption processes |
| CN108817062A (en) * | 2018-06-28 | 2018-11-16 | 上海环境工程设计研究院有限公司 | Indirect thermal desorption device for organic polluted soil showering |
| CN209363277U (en) * | 2018-09-20 | 2019-09-10 | 北京市地质工程设计研究院 | A kind of organic polluted soil reparation heap body hypothermia thermal desorption device |
| CN109433814A (en) * | 2018-11-30 | 2019-03-08 | 浙江宜可欧环保科技有限公司 | Soil heterotopic restorative procedure and its device based on pyrolysis desorption |
| CN110064646A (en) * | 2019-06-05 | 2019-07-30 | 上海市城市建设设计研究总院（集团）有限公司 | The integrated soil repair system of movable type |
| CN110614266A (en) * | 2019-09-26 | 2019-12-27 | 中科鼎实环境工程有限公司 | Heap thermal desorption treatment system for repairing organic contaminated soil |
Non-Patent Citations (1)
| Title |
|---|
| 李向东、冯启言、孟庆俊、周来、朱雪强: "《环境污染与修复》", 31 January 2016, 中国矿业大学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113680806A (en) * | 2021-07-28 | 2021-11-23 | 湖南钦杰环保科技有限公司 | Environment-friendly municipal polluted soil remediation system and use method thereof |
| CN114192537A (en) * | 2021-11-23 | 2022-03-18 | 中国葛洲坝集团生态环境工程有限公司 | Smoke collecting device for excavation surface of elemental phosphorus-containing polluted soil |
| CN114192537B (en) * | 2021-11-23 | 2023-09-19 | 葛洲坝集团生态环保有限公司 | Smoke collecting equipment for excavation surface of soil polluted by elemental phosphorus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107685073B (en) | Centralized combustion type in-situ thermal desorption repairing device for polluted site | |
| CN107685072B (en) | Centralized combustion type in-situ thermal desorption restoration method for polluted site | |
| CA2443276C (en) | Infiltration and gas recovery systems for landfill bioreactors | |
| CN202490819U (en) | In-situ remediation device for organic contaminated soil | |
| CN102580993A (en) | In-situ remediation technology for organic polluted soil | |
| CN110614266A (en) | Heap thermal desorption treatment system for repairing organic contaminated soil | |
| CN101966529B (en) | Soil repair method for treating polychlorinated biphenyl pollutants | |
| US7422393B2 (en) | Aerobic and anaerobic waste management systems and methods for landfills | |
| CN105234164A (en) | Ectopic biological reactor gas-phase extraction/biological ventilation repair device and method of organic contaminated soil | |
| CN112387769A (en) | Micro negative pressure collecting and processing system for contaminated soil ex-situ remediation engineering | |
| ES2893848T3 (en) | Systems, method and treatment cells to rehabilitate and enhance land | |
| CN100462316C (en) | Sludge storing and preheating system utilizing sludge drying tail gas afterheat | |
| KR100691565B1 (en) | Stabilization pool for waste water slurgy in order to obtain compost heap | |
| ITTO20110763A1 (en) | SYSTEM FOR CATCHING AND / OR ABATEMENT OF HARMFUL EMISSIONS IN AN ATMOSPHERE FROM A SYSTEM IN THE EVENT OF AN ACCIDENT, PARTICULARLY A NUCLEAR SYSTEM | |
| Gautam et al. | Landfill gas as an energy source | |
| CN212452804U (en) | Simple industrial solid waste storage place pollution blocking system | |
| CN219520002U (en) | High-efficiency soil and groundwater risk management and control system | |
| CN113319113A (en) | Thermal desorption device and process for organic contaminated soil | |
| CN216827896U (en) | Ectopic soil thermal desorption repair system | |
| CN215696754U (en) | Ectopic soil thermal desorption repair system with dehydration function | |
| CN206064980U (en) | A kind of city landfill yard of two-way gas gathering system | |
| CN211218000U (en) | Heap thermal desorption treatment system for repairing organic contaminated soil | |
| CN214881010U (en) | Riverway sediment in-situ remediation system | |
| CN110303022B (en) | Anti-seepage pollution household garbage landfill system and method | |
| JP2006043678A (en) | Leachate sludge treating system for reclaimed land and leachate sludge treating method for reclaimed land |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210223 |