CN110899320B - Contaminated soil remediation filter tower and contaminated soil remediation system - Google Patents
Contaminated soil remediation filter tower and contaminated soil remediation system Download PDFInfo
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- CN110899320B CN110899320B CN201911183758.2A CN201911183758A CN110899320B CN 110899320 B CN110899320 B CN 110899320B CN 201911183758 A CN201911183758 A CN 201911183758A CN 110899320 B CN110899320 B CN 110899320B
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- 239000002689 soil Substances 0.000 title claims abstract description 87
- 238000005067 remediation Methods 0.000 title claims abstract description 52
- 239000003814 drug Substances 0.000 claims abstract description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 14
- 238000001914 filtration Methods 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 229940079593 drug Drugs 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 claims description 3
- 230000002421 anti-septic effect Effects 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 claims 1
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- 230000003000 nontoxic effect Effects 0.000 description 3
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Images
Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
-
- 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
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/44—Organic components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
Abstract
The invention provides a contaminated soil remediation filter tower, which comprises: the setting is in the medicament entry at filter tower top is from top to bottom alternately the slope install a plurality of filter cartridges in the shell body of filter tower are located the play water tank of filter tower bottom, wherein, pollute soil and hold in the filter cartridge. The polluted soil remediation system has the advantages of less electric equipment, low power consumption, small unit occupied area and good treatment effect, and tail gas is discharged after being treated when the polluted soil remediation system runs in a closed space in the treatment process, so that secondary pollution can be avoided.
Description
Technical Field
The invention relates to the field of organic contaminated soil treatment, in particular to a low-power multilayer baffled contaminated soil remediation filter tower and a contaminated soil remediation system comprising the same.
Background
The soil is a natural base for plant growth and propagation, is a basic production resource of agriculture, is a natural resource which people rely on to live and is important, and the soil pollution is increasingly serious along with the aggravation of industrial and urban pollution and the increase of the variety and the quantity of agricultural chemicals, and the soil pollution is increasingly concerned by countries in the world as a problem for restricting the sustainable development of human society. Soil pollution has the characteristics of long-term property, irreversibility and the like, when harmful substances in soil are accumulated to a certain degree, the soil degradation, the crop yield and the quality are reduced, surface water and underground water can be polluted through runoff and leaching action, the hydrological environment is deteriorated, the soil pollution causes secondary pollution to the underground water and the surface water, and the water enters human bodies through drinking water or a soil-plant system through a food chain to endanger the health of human beings. Therefore, the method has important significance for the remediation treatment of the polluted soil.
However, the existing soil remediation equipment generally has the problem that the pesticide and the soil are not uniformly mixed in the remediation process, and in the process of screening and mixing the polluted soil by using the crushing and screening hopper in the remediation greenhouse, dust and organic matter gas are seriously overflowed, secondary pollution is caused, and the damage to the health of constructors is easily caused.
Patent number CN 107999526A provides a full-automatic integral type chemical oxidation and solidification stabilization soil repair equipment, and the integration design is convenient to operate, and degree of automation is high. However, the equipment adopts a plurality of electric equipment, so that the power consumption is high and the occupied area is large.
Patent No. CN 108262349 a provides a polluted site ectopic chemical oxidation-reduction remediation device, which adopts an open horizontal mixer, and in the mixing process, organic gas is discharged in an unorganized manner, causing secondary pollution.
Disclosure of Invention
The present invention has been made to solve the above problems, and an object of the present invention is to provide a low-power multi-layer baffled contaminated soil remediation filter tower and a contaminated soil remediation system including the same, which not only have a small number of power consumption equipment, low power consumption, small unit floor area, and a good treatment effect, but also operate in a closed space during the treatment process, and exhaust gas is discharged after the treatment, thereby avoiding secondary pollution.
In order to achieve the above object, the present invention provides a contaminated soil remediation filtration tower having the following features: the method comprises the following steps: the setting is in the medicament entry at filter tower top is from top to bottom alternately the slope install a plurality of filter cartridges in the shell body of filter tower are located the play water tank of filter tower bottom, wherein, pollute soil and hold in the filter cartridge.
The invention provides a contaminated soil remediation filter tower, which is further characterized by further comprising a filter plate arranged at the tail end of each filter box.
The polluted soil restoration filter tower is also characterized by further comprising a plurality of slide rails which are obliquely installed in the outer shell body from top to bottom in a crossed mode, and each filter box is installed in each slide rail.
In addition, the invention also provides a contaminated soil remediation system comprising the contaminated soil remediation filter tower, and the contaminated soil remediation system is characterized by further comprising a medicine feeding device, and the medicine feeding device comprises an anti-corrosion lifting pump and a dissolving barrel which are sequentially connected with the medicine inlet through a pipeline.
The contaminated soil remediation system provided by the invention is also characterized in that the medicine feeding device further comprises a buffer tank and an electromagnetic flowmeter which are sequentially arranged on a pipeline between the anticorrosion lifting pump and the medicine inlet.
The polluted soil remediation system provided by the invention is also characterized by further comprising a water outlet pump connected with the water outlet tank.
The polluted soil remediation system provided by the invention is also characterized by further comprising a tail gas treatment device, wherein the tail gas treatment device is provided with an activated carbon tank and a chimney which are sequentially connected with the top of the filter tower through a pipeline.
The polluted soil remediation system provided by the invention is also characterized by further comprising an induced draft fan connected with the chimney.
Action and Effect of the invention
The invention relates to a low-power multi-layer baffling contaminated soil remediation filter tower and a contaminated soil remediation system comprising the same, wherein slide rails which are obliquely arranged in a crossed manner are arranged in the filter tower, so that a filter box can be conveniently slid in and out, and the filter box is slid into the filter tower through a slide rail on a shell after being filled with organic contaminated soil; the dissolved medicament is lifted to a medicament tank through an anticorrosive lift pump, then flows into the filter tower under the action of gravity flow, and the medicament solution flows to the inclined upper end of the filter box under the action of gravity flow, has the characteristic of low power, gradually infiltrates soil in the box through the osmosis, flows to the inclined upper end of the lower filter box through the filter plate at the box end, sequentially bends to flow, finally forms baffling reaction, and finally falls to the water outlet box. The chemical oxidizing agent water solution flows through the soil layer, and chemical oxidation reacts with organic matters in the soil to degrade the organic matters into nontoxic substances, so that the aim of repairing the polluted soil is fulfilled. The reaction solution in the water tank is pumped out by a water pump and then is treated, and the treated solution can be recycled. In addition, the top of the filter tower is connected with a pipeline, and the induced draft fan can pump out the volatile organic gas when the soil reacts with the medicament to the activated carbon tank for adsorption treatment. In addition, in the invention, the stirring pump in the medicament dissolving barrel can dissolve the oxidation medicament, the anticorrosion lifting pump pumps the medicament into the medicament buffer tank, the medicament buffer tank can control the amount and the flow rate of the medicament solution entering the filter tower, and the electromagnetic flowmeter regulates the flow entering the filter tower. In addition, the space of the filter tower is utilized to the maximum extent, the plurality of layers of filter boxes are obliquely and crossly arranged, the oxidizing agent solution sequentially flows through each layer of filter box, the contact area of the agent and the polluted soil is increased to a great extent, the reaction time is prolonged, and after the reaction is finished, the shell switch door of the filter tower can be opened, the filter boxes are moved out, and the repaired soil is poured out. The contaminated soil remediation system disclosed by the invention is simple in structure, fast in movement, simple and easy to operate, capable of running at low power, low in energy consumption, small in unit occupied area, capable of fully utilizing space conditions, free of secondary pollution and suitable for being used in plots with many sensitive areas.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of an embodiment of the contaminated soil remediation system of the present invention.
Fig. 2 is a schematic structural view of a filter cassette in the contaminated soil remediation system of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Fig. 1 is a schematic view of the overall structure of an embodiment of the contaminated soil remediation system of the present invention.
As shown in FIG. 1, the present invention provides a contaminated soil remediation filter tower, which has a chemical inlet (not shown) at the top, a plurality of filter cartridges 5 installed in an outer casing 6 of the filter tower in a cross-inclined manner from top to bottom, and a water outlet tank 7 at the bottom. Wherein, filter cartridge 5 holds pollute soil, the medicament flows through each layer in proper order from top to bottom filter cartridge 5 to collect to go out water tank 7. Particularly, in the filter tower, can also have from top to bottom alternately the slope install a plurality of slide rails in the shell body, the slide rail accessible welding or screw fixation is in on the shell body inner wall. The outer shell is provided with an opening and closing door, and the filter box 5 can slide into or be drawn out of the sliding rail by opening the opening and closing door. In addition, the top end of the sliding rail can be fixed with a flexible clamping groove (not shown in the figure), so that the filtering box can play a role in buffering when sliding into the outer shell and can also be fixed. After each filter cartridge 5 is filled with organic contaminated soil, the filter cartridge 5 slides into the slide rail through the slide rail on the casing and is fixed in the filter tower, so that the filter cartridge 5 is fixed in the casing for obtaining a prize conveniently, in some embodiments, the size of the filter cartridge 5 is equivalent to the internal size of the casing 6, and the filter cartridge 5 can be just clamped in the inside of the casing 6. The cross arrangement slope ratio of the multi-layer filter box ranges from 0.1% to 0.5%, preferably from 0.2% to 0.35%, and more preferably 0.3%. In some embodiments, the cross arrangement slope ratio of the sliding rails is 0.3%. The number of the filter boxes is not limited, and can be determined according to the height of the filter tower, the pollution degree of the polluted soil and the treatment capacity. In some embodiments, the filter cassette 5 has dimensions of 1m high, 15m long, 4m wide and 60m volume3The number of layers was 6.
Fig. 2 is a schematic structural view of a filter cassette in the contaminated soil remediation system of the present invention.
As shown in figure 2, in the polluted soil remediation filter tower provided by the invention, each filter box 5 is obliquely arranged in a crossed manner, and is provided with an inclined initial end 52 and an inclined tail end 53 according to the direction of the flow of the medicament, the tail end of each filter box 5 is provided with a filter plate 51, the medicament solution entering the filter tower through the medicament inlet flows to the inclined initial end of the top-layer filter box through gravity, has the characteristic of low power, gradually infiltrates the soil in the box through osmosis, flows to the inclined initial end of the lower-layer filter box through the filter plate 51 at the inclined tail end of the filter box 5, sequentially bends to flow, finally forms a baffling reaction, and finally falls to the water outlet box 7. The chemical oxidation agent water solution flows through the soil layer of the filter box 5, and the chemical oxidation reacts with organic matters in the soil to degrade the organic matters into nontoxic substances, thereby achieving the purpose of restoring the polluted soil.
In addition, the invention also provides a contaminated soil remediation system comprising the contaminated soil remediation filter tower. The contaminated soil remediation system comprises a drug feeding device used for feeding a drug for treating contaminated soil into the filter tower. The medicine feeding device is provided with an anti-corrosion lifting pump 2 and a dissolving barrel 1 which are sequentially connected with the medicine inlet through a pipeline, wherein a stirring pump (not shown in the figure) can be arranged in the solution barrel 1 and is used for stirring and dissolving the oxidation medicine. The medicament is stirred by the stirring pump in the solution barrel 1 to obtain a medicament solution. The antiseptic lifting pump 2 can pump the medicament solution out of the stirring barrel 1.
In addition, in the contaminated soil remediation system provided by the invention, the medicine feeding device further comprises a buffer tank 3 and an electromagnetic flow meter 4 which are sequentially arranged between the anticorrosive lift pump 2 and the medicine inlet. In some embodiments, the solution barrel 1, the corrosion prevention lift pump 2, the buffer tank 3 and the electromagnetic flow meter 4 are sequentially connected with a medicament inlet at the top of the filter tower through pipelines. Further, foretell anticorrosive elevator pump of agitator pump 2 can be with the medicament solution pump income medicament buffer tank 3 after dissolving, and medicament buffer tank 3 is through the volume and the velocity of flow of the medicament solution of effect control entering filter tower of gravity, and electromagnetic flowmeter 4 then measures and adjusts the medicament solution volume that gets into the filter tower. The pharmacological solution flows from the pharmacological inlet under gravity flow to the inclined beginning 52 of the top filtration 5 cassette inside the filtration column.
In addition, the polluted soil remediation system provided by the invention further comprises a water outlet pump 8 connected with the water outlet tank 7. The water outlet of the water outlet tank 7 is connected with a water outlet pump 8 through a pipeline, and the solution in the water outlet tank 7 is pumped by the water outlet pump and can be recycled after treatment.
In addition, the polluted soil remediation system provided by the invention further comprises a tail gas treatment device, wherein the tail gas treatment device is provided with an activated carbon tank 9, a chimney 11 and an induced draft fan 10, the activated carbon tank and the chimney are sequentially connected with the top of the filter tower through pipelines, and the induced draft fan is connected with the chimney. The induced draft fan 10 can be used for sucking the volatile organic compounds in the filter tower into the activated carbon canister 9 for adsorption treatment, and the treated gas can be discharged into the atmosphere through a chimney 11.
The filter tower utilizes the space to the maximum extent, and the oxidation medicament solution is baffled to pass through each layer of filter box by arranging a plurality of layers of filter boxes, so that the contact area between the medicament and the polluted soil is increased to a great extent, and the reaction time is prolonged.
Example 1
The filter boxes are sequentially and obliquely arranged in the filter tower in a crossed manner, and the filter boxes are 1m high, 15m long, 4m wide and 60m in volume3The number of the layers is 6, and 360m of polluted soil can be processed in each batch3. The hydraulic retention time of the agent solution in the filter column was 8 hours. After the oxidizing agent is stirred and dissolved in the solvent barrel by the stirring pump, the oxidizing agent is pumped into the agent solution buffer tank by the anticorrosion lift pump, and the medicine inlet flow is adjusted to be 12m by the electromagnetic flowmeter3And d, enabling the redundant medicament solution to flow back into the medicament dissolving barrel 1 through a reflux device after flocculation and precipitation of water treatment equipment. The medicament solution enters the top of the filter tower from the medicament inlet and flows through the filter box 5 layer by layer, wherein the organic matters are gradually oxidized and decomposed by the oxidizing medicament, and the volatilized organic matters and gas generated by oxidation are treated by the tail gas treatment device at the upper end of the filter tower and then are discharged after reaching the standard. Finally, the oxidation agents permeating layer by layer enter the water outlet tank 7 and are pumped out by the water outlet pump 7 for subsequent treatment. The soil treated by the contaminated soil remediation system reaches a remediation target value and finally runsThe power consumption is 0.04 kWh/ton, compared with other repairing devices, the power consumption of the polluted soil repairing system is lower, the hydraulic retention time of the medicament solution in the filter tower is longer, namely 8 hours, and the repairing time is longer.
Effects and effects of the embodiments
According to the low-power multi-layer baffling contaminated soil remediation filter tower and the contaminated soil remediation system comprising the same, slide rails which are obliquely arranged in a crossed manner are arranged in the filter tower, so that the filter boxes can be conveniently slid in and out, and the filter boxes can slide into the filter tower through the slide rails on the shell after being filled with organic contaminated soil; the dissolved medicament is lifted to a medicament tank through an anticorrosive lift pump, then flows into the filter tower under the action of gravity flow, and the medicament solution flows to the inclined upper end of the filter box under the action of gravity flow, has the characteristic of low power, gradually infiltrates soil in the box through the osmosis, flows to the inclined upper end of the lower filter box through the filter plate at the box end, sequentially bends to flow, finally forms baffling reaction, and finally falls to the water outlet box. The chemical oxidizing agent water solution flows through the soil layer, and chemical oxidation reacts with organic matters in the soil to degrade the organic matters into nontoxic substances, so that the aim of repairing the polluted soil is fulfilled. The reaction solution in the water tank is pumped out by a water pump and then is treated, and the treated solution can be recycled. In addition, the top of the filter tower is connected with a pipeline, and the induced draft fan can pump out the volatile organic gas when the soil reacts with the medicament to the activated carbon tank for adsorption treatment. In addition, in this embodiment, the stirring pump in the chemical dissolving barrel can dissolve the oxidation chemical, and the anticorrosive elevator pump then pumps the chemical into the chemical buffer tank, and the controllable chemical solution volume and the velocity of flow that get into the filter tower of chemical buffer tank, the flow that gets into the filter tower is adjusted to the electromagnetic flowmeter. In addition, the filter tower in this embodiment furthest has utilized the space, through the slope cross arrangement multilayer filter cartridge, oxidation medicament solution flows through the filter cartridge of each layer in proper order, and to a great extent has increased the area of contact of medicament and contaminated soil, has increased reaction time, and can open filter tower shell switch door after the reaction is accomplished, shifts out the filter cartridge, pours out the soil that has restoreed. The contaminated soil remediation system in the embodiment has the advantages of simple structure, quickness in movement, simplicity and easiness in operation, capability of running at low power, low energy consumption, small unit occupied area, full utilization of space conditions, no secondary pollution and suitability for being used in plots with a large number of sensitive areas.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, apparatus, article, or method that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, apparatus, article, or method. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, apparatus, article, or method that includes the element.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. A contaminated soil remediation filtration tower, comprising:
a medicament inlet arranged at the top of the filter tower,
a plurality of filter boxes which are obliquely arranged in the outer shell of the filter tower from top to bottom in a crossed way,
a water outlet tank positioned at the bottom of the filtering tower,
wherein the contaminated soil is contained in the filter cartridge;
each filter cartridge is provided with an inclined initial end and an inclined tail end according to the direction of the flowing of the medicament;
a filter plate is arranged at the tail end of each filter box;
the filter tower is also provided with a plurality of slide rails which are obliquely arranged in the outer shell in a crossed manner from top to bottom, and each filter box is arranged in the slide rail; the sliding rail is fixed on the inner wall of the outer shell through welding or screws; the shell body is provided with an opening and closing door, and the filter box can slide into or be drawn out of the sliding rail by opening the opening and closing door.
2. A contaminated soil remediation system comprising the contaminated soil remediation filtration tower of claim 1 further comprising a drug feeding device having an antiseptic lift pump and a dissolving tank connected in series to the agent inlet via a pipeline.
3. The contaminated soil remediation system of claim 2, wherein said drug inlet means further comprises a buffer tank and an electromagnetic flow meter mounted in sequence on a pipeline between said corrosion-resistant lift pump and said agent inlet.
4. The contaminated soil remediation system of claim 3 further comprising a water outlet pump connected to said water outlet tank.
5. The contaminated soil remediation system of claim 3 further comprising a tail gas treatment unit having an activated carbon canister and a chimney connected in series to the top of said filtration tower via a conduit.
6. The contaminated soil remediation system of claim 5, further comprising an induced draft fan connected to said chimney.
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| CN203196984U (en) * | 2013-04-26 | 2013-09-18 | 江苏上田环境修复有限公司 | Equipment for remediation of soil polluted by volatile organic substances |
| CN103894409A (en) * | 2014-03-27 | 2014-07-02 | 武汉都市环保工程技术股份有限公司 | Stable curing repair system for polluted soil |
| CN204769856U (en) * | 2015-05-31 | 2015-11-18 | 中国烟草总公司郑州烟草研究院 | Detachable soil eluting device |
| CN205216382U (en) * | 2015-12-10 | 2016-05-11 | 巴州澳华油脂有限公司 | Novel biodiesel filtration system |
| CN205760025U (en) * | 2016-05-24 | 2016-12-07 | 湖北金玉兰医药科技有限公司 | A kind of active carbon filtering device |
| CN206621877U (en) * | 2017-04-13 | 2017-11-10 | 周旭龙 | A kind of quality purifying device for water with bi-directional filtered function |
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| CN110899320A (en) | 2020-03-24 |
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