CN110067521B - Rotary excavating treatment system and method for volatile toxic substance-containing solid waste in mine - Google Patents
Rotary excavating treatment system and method for volatile toxic substance-containing solid waste in mine Download PDFInfo
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- CN110067521B CN110067521B CN201910207102.3A CN201910207102A CN110067521B CN 110067521 B CN110067521 B CN 110067521B CN 201910207102 A CN201910207102 A CN 201910207102A CN 110067521 B CN110067521 B CN 110067521B
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- 238000000034 method Methods 0.000 title claims abstract description 42
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- 239000002341 toxic gas Substances 0.000 claims abstract description 91
- 239000007789 gas Substances 0.000 claims abstract description 61
- 238000001179 sorption measurement Methods 0.000 claims abstract description 59
- 238000005553 drilling Methods 0.000 claims abstract description 50
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- 230000008569 process Effects 0.000 claims abstract description 14
- 238000000746 purification Methods 0.000 claims abstract description 10
- 239000002699 waste material Substances 0.000 claims abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 46
- 230000001590 oxidative effect Effects 0.000 claims description 23
- 239000007800 oxidant agent Substances 0.000 claims description 22
- 238000003860 storage Methods 0.000 claims description 22
- 238000012545 processing Methods 0.000 claims description 12
- 238000009412 basement excavation Methods 0.000 claims description 10
- 238000005086 pumping Methods 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 6
- 231100000331 toxic Toxicity 0.000 claims description 5
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/002—Down-hole drilling fluid separation systems
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B27/00—Containers for collecting or depositing substances in boreholes or wells, e.g. bailers, baskets or buckets for collecting mud or sand; Drill bits with means for collecting substances, e.g. valve drill bits
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Abstract
The invention discloses a rotary digging treatment system and a rotary digging treatment method for solid waste containing volatile toxic substances in a mine, wherein a first air pump is started to pump out toxic gas in the mine to a first adsorption tank for adsorption and purification and then discharge; placing the rotary drilling rig right above the mine, opening the well cover, simultaneously starting a second air pump, carrying the rotary drilling rig with a rotary drilling rig hopper to go deep into the mine, and covering the well cover; starting a rotary drilling rig to drive a hopper of the rotary drilling rig to perform rotary drilling and waste fixing, and operating a first air pump all the time in the rotary drilling process to pump out volatilized toxic gas; after the hopper of the rotary excavator is full, lifting the rotary excavating drill rod, opening the well cover, unloading the solid waste in the hopper of the rotary excavator into the hopper, and simultaneously starting a third air pump to pump the toxic gas escaping from the hopper into a first adsorption tank for purification; and (4) purifying and discharging toxic gas. The treatment method has the advantages of controllable dredging amount, no gas escape, stable well wall, high safety and the like.
Description
Technical Field
The disclosure relates to the technical field of disposal of volatile solid waste in a mine, in particular to a rotary excavating treatment system and a rotary excavating treatment method for volatile toxic solid waste in the mine.
Background
The information in this background section is only for enhancement of understanding of the general background of the disclosure and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.
At present, in order to gain greater benefit, some lawbreakers can directly dump different types of chemical waste into deeper mines without treatment, and the inventor finds that the underground space is seriously polluted. Chemical waste can produce chemical reaction in the storage process, generate a large amount of toxic gas, and cause serious pollution to the environment around a mine. Moreover, pollutants in the mine can be transported along with underground water, so that the underground water quality is affected, and the life and health safety of nearby residents are endangered. For the treatment of pollutants in mines, underground pollutants must be removed, and the first measure is to carry the pollutants to the ground and then deliver the pollutants to special hazardous waste treatment enterprises for disposal. The blind opening of the well cover can cause toxic gas in the mine to overflow, and the atmospheric environment and the physical health of workers are seriously endangered.
Disclosure of Invention
In order to solve the technical problems in the prior art, the purpose of the disclosure is to provide a system and a method for rotary digging treatment of solid waste containing volatile toxic substances in a mine. The treatment method has the advantages of controllable dredging amount, no gas escape, stable well wall, high safety and the like.
In order to solve the above technical problem, the technical scheme of the present disclosure is:
a rotary excavating treatment system for volatile toxic substance-containing solid waste in a mine comprises the mine, a rotary excavating device, a hopper and a toxic gas treatment system, wherein the mine is filled with the volatile toxic substance-containing solid waste to be treated;
the rotary digging device comprises a rotary digging drill, a rotary digging drill rod and a rotary digging machine hopper, the rotary digging machine hopper is connected with the rotary digging drill through the rotary digging drill rod, and the rotary digging machine hopper extends into the mine and is used for rotary digging solid waste in the mine;
the hopper is arranged close to an opening at the upper end of the mine, and a set height is reserved between the lower part of the hopper and the ground;
the toxic gas treatment system comprises a first inclined shaft, a first air suction pump, a first air suction gas collecting hood, a second air suction pump, a first gas pipe, a second air suction gas collecting hood, a third air suction pump, a first adsorption tank and a discharge pipeline, wherein one end of the first inclined shaft is communicated with the inside of the mine, the other end of the first inclined shaft extends to the ground and is connected with an inlet of the first air suction pump, and an outlet of the first air suction pump is connected with the first gas pipe;
the first air suction and gas collection hood is arranged on the side surface of the upper end opening of the mine and is connected with the first air delivery pipe through a second air suction pump;
the second air suction and gas collection hood is arranged on the side surface of the upper end opening of the hopper and is connected with the first gas conveying pipe through a third air suction pump;
the first gas pipe is connected with the lower end of the discharge pipeline through the first adsorption tank, the discharge pipeline is vertically arranged, the height of the discharge pipeline is greater than 10 meters, and an adsorbent is contained in the first adsorption tank.
One end of the first inclined shaft is communicated with the inside of the mine, the other end of the first inclined shaft extends to the ground, the first air pump acts to pump toxic gas in the mine into the first adsorption tank, and the toxic gas is discharged after being adsorbed and oxidized by the adsorbent and the oxidant in the first adsorption tank. Through the steps, the concentration of the toxic gas in the mine can be reduced, and the toxic gas leakage is prevented from causing great influence on the surrounding environment.
The first adsorption tank can treat the toxic gas to prevent the direct discharge of the toxic gas from polluting the environment.
The height of the discharge pipeline is more than 10 meters, so that the purified gas can be conveyed to the high altitude, and the toxic hazard of the workers on the ground caused by a small amount of residual toxic gas in the discharged gas is avoided.
Set up first air suction gas collecting channel in the upper end open-ended side of mine, the second aspiration pump can be through first air suction gas collecting channel will follow the mine mouth and spill the toxic gas and collect, take out and adsorb in the first absorption jar and purify the back and discharge to prevent to cause the pollution from the environment from the toxic gas of mine upper end open-ended effusion.
The hopper is close to the upper end opening installation of mine, and the below of hopper leaves the height of setting for with ground, and it directly unloads on the hopper to dig the solid useless that the hopper was dug soon to go up to pack in the space of hopper below, can transport outward after the bagging-off.
In some embodiments, the first slant well is angled 30-45 ° from vertical. The included angle is convenient for construction and is beneficial to improving the stability of the inclined shaft.
In some embodiments, a well cover covers the opening at the top of the mine, a through hole is formed in the middle of the well cover, and the rotary drilling rod penetrates through the through hole.
The well lid closes the mine, can effectively prevent the toxic gas in the mine from escaping outward, reduces the pollution to the surrounding environment.
In some embodiments, the toxic gas treatment system further comprises a second inclined shaft and a fourth air pump, one end of the second inclined shaft is communicated with the inside of the mine, the communication point is located in the solid waste layer, the other end of the second inclined shaft extends to the surface of the ground, and the second inclined shaft is connected with the first adsorption tank through the fourth air pump.
And the fourth air pump can pump out the toxic gas in the solid waste layer through the second inclined shaft, so that the concentration of the toxic gas in the mine is reduced radically.
In some embodiments, the toxic gas treatment system further comprises a second inclined shaft, one end of the second inclined shaft is communicated with the interior of the mine, the communication point is located in the solid waste layer, and the other end of the second inclined shaft extends out of the ground surface and is open.
The first air pump is in the in-process of operation, takes out the toxic gas in the mine, presents little negative pressure in making the mine, and during the outside air can get into the solid waste layer of mine along the second inclined shaft under the effect of little negative pressure, replaces clean air with the toxic gas in the solid waste layer to reduce the concentration of toxic gas in the mine.
In some embodiments, the toxic gas treatment system further comprises a third inclined shaft and a fifth air pump, wherein one end of the third inclined shaft is connected with the mine, the connection point is positioned above the connection point of the first inclined shaft and the mine, the other end of the third inclined shaft extends out of the ground surface and is connected with the fifth air pump, and the outlet of the fifth air pump is connected with the first adsorption tank.
The third inclined shaft is positioned above the first inclined shaft, so that the toxic gas on the upper layer in the mine can be pumped out, and the concentration of the toxic gas in the mine is further reduced.
In some embodiments, the top of the discharge conduit is provided with a windproof cap. Can effectively prevent the reverse flow of wind.
In some embodiments, the first canister contains an oxidant layer and an activated carbon layer, both covering the entire flow cross section of the gas, and the oxidant layer is located upstream of the activated carbon layer. Firstly, certain reducing substances in the toxic gas are oxidized through the oxidant layer, and substances which cannot be oxidized are removed in an activated carbon adsorption mode, so that the toxic gas is guaranteed to be better purified.
In some embodiments, the rotary excavating processing system further comprises a solid waste storage chamber, a sixth air pump and a second adsorption tank, an inlet of the sixth air pump is connected with the solid waste storage chamber through a pipeline, an outlet of the sixth air pump is connected with an inlet of the second adsorption tank through a pipeline, and an outlet of the second adsorption tank is connected with the bottom of the discharge pipeline.
The solid useless in bags also has toxic gas to escape depositing the in-process, and the solid useless deposit room can be collected toxic gas to adsorb through the sixth air pump and purify in pumping to the second adsorption tank, discharge after the purification.
Furthermore, an oxidant layer and an activated carbon layer are contained in the second adsorption tank, the oxidant layer and the activated carbon layer both cover the whole flow cross section of the gas, and the oxidant layer is positioned at the upstream of the activated carbon layer. So that the toxic gas can be conveniently subjected to integral interception, oxidation, adsorption and purification.
A rotary digging treatment method for solid waste containing volatile toxic substances in a mine comprises the following steps:
starting a first air pump, pumping the toxic gas in the mine into a first adsorption tank, adsorbing and purifying, and then discharging;
placing the rotary drilling rig right above the mine, opening the well cover, simultaneously starting a second air pump, carrying the rotary drilling rig with a rotary drilling rig hopper to go deep into the mine, and covering the well cover;
starting a rotary drilling rig to drive a hopper of the rotary drilling rig to perform rotary drilling and waste fixing, and operating a first air pump all the time in the rotary drilling process to pump out volatilized toxic gas;
after the hopper of the rotary excavator is full, lifting the rotary excavating drill rod, opening the well cover, unloading the solid waste in the hopper of the rotary excavator into the hopper, and simultaneously starting a third air pump to pump the toxic gas escaping from the hopper into a first adsorption tank for purification;
and (4) purifying and discharging toxic gas.
The oxidant is selected accordingly based on the processor target gas characteristics. The oxidation part can also adopt catalytic oxidation, combustion method, biological method and the like. If a wet-type oxidant is used, a drying link is required and then adsorption is carried out.
Further, the treatment method also comprises the step of opening a fourth air pump to pump out toxic gas in the solid waste layer in the mine, and discharging the toxic gas after purification by the first adsorption tank.
Further, the treatment method also comprises the step of introducing air into the solid waste layer in the mine through a second inclined shaft.
Further, the treatment method also comprises the steps of bagging the solid waste in the hopper, storing the bagged solid waste in the solid waste storage chamber for sealed storage, starting the sixth air pump, pumping away the toxic gas in the solid waste storage chamber, purifying the toxic gas by the second adsorption tank and discharging the toxic gas.
The beneficial effect of this disclosure does:
the device can dig out pollutants under safe and controllable conditions, and effectively control the influence of volatile substances in solid waste on human health and surrounding environment in rotary digging and transferring processes through the design of an air suction system and the like. Meets the requirements of secondary pollution prevention and control. And safety factor control in the construction process is realized. The method has the obvious advantages of controllable dredging amount, no toxic gas escape in the construction process, high safety and the like.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and are not to limit the disclosure.
FIG. 1 is a schematic overall structural view of an embodiment of the present disclosure;
FIG. 2 is a schematic structural diagram of a pre-decapping system according to an embodiment of the disclosure;
fig. 3 is a schematic view of solid waste stockpiling in the steel structure negative pressure membrane greenhouse according to the embodiment of the present disclosure.
The system comprises a bag solid waste storage chamber, a second gas pipe, a third gas pipe, a discharge pipeline, a first adsorption tank, a first gas pipe, a second adsorption tank, a third gas pump, a second gas pipe, a third gas pump, a third gas pipe, a discharge pipeline, a third gas pipe, a second gas pipe, a third gas pipe, a fourth gas pipe, a fifth gas pipe, a sixth gas suction pump, a fifth gas suction pump, a sixth inclined shaft, a second inclined shaft, a 14, a fourth inclined shaft, a fifth inclined shaft, a sixth inclined shaft, a fourth inclined shaft, a fifth inclined shaft, a sixth inclined shaft, a sixth shaft, a sixth inclined shaft, a sixth shaft, a sixth shaft.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As shown in fig. 1 and fig. 2, a rotary drilling treatment system for volatile toxic substance-containing solid waste in a mine comprises a mine 16, a rotary drilling device, a hopper 22 and a toxic gas treatment system, wherein the mine 16 is filled with volatile toxic substance-containing solid waste 14 to be treated;
the rotary digging device comprises a rotary digging drill 11, a rotary digging drill rod 17 and a rotary digging machine hopper 15, the rotary digging machine hopper 15 is connected with the rotary digging drill 11 through the rotary digging drill rod 17, and the rotary digging machine hopper 15 extends into the mine 16 and is used for rotary digging solid waste in the mine 16. The rotary drilling rig is a construction machine suitable for hole forming operation in building foundation engineering, can be constructed on a solid waste layer of a mine by rotary drilling, rotary drills toxic solid waste on the solid waste layer in the mine into a rotary drilling machine hopper 15, controls the rotary drilling rig 11 after the rotary drilling machine hopper 15 is filled with the toxic solid waste, lifts a rotary drilling rod 17, and lifts the rotary drilling machine hopper 15 out of the mine 16.
The toxic gas treatment system comprises a first inclined shaft 12, a first air suction pump 25, a first air suction gas collecting hood 19, a second air suction pump, a first gas conveying pipe 10, a second air suction gas collecting hood 23, a third air suction pump 6, a first adsorption tank 9 and a discharge pipeline 8, wherein one end of the first inclined shaft 12 is communicated with the interior of a mine 16, the other end of the first inclined shaft 12 extends to the ground and is connected with an inlet of the first air suction pump 25, and an outlet of the first air suction pump 25 is connected with the first gas conveying pipe 10;
the first air suction and gas collection hood 19 is arranged on the side surface of an upper end opening of the mine 16 and is connected with the first air conveying pipe 10 through a second air suction pump;
the second air suction and gas collection hood 23 is arranged on the side surface of the upper end opening of the hopper 22 and is connected with the first gas transmission pipe 10 through a third air suction pump 6;
the first gas transmission pipe 10 is connected with the lower end of the discharge pipeline 8 through the first adsorption tank 9, the discharge pipeline 8 is vertically arranged, the height of the discharge pipeline is larger than 10 meters, and the first adsorption tank 9 is filled with an adsorbent.
In some embodiments, the first slant well 12 is angled 30-45 ° from vertical.
In some embodiments, a manhole cover 18 covers the top opening of the mine 16, a through hole is formed in the middle of the manhole cover 18, and the rotary drilling rod 11 penetrates through the through hole.
The well cover 18 covers the mine 16, so that toxic gas in the mine 16 can be effectively prevented from escaping, and the pollution to the surrounding environment is reduced.
In some embodiments, the toxic gas treatment system further comprises a second inclined shaft 13 and a fourth air pump, one end of the second inclined shaft 13 is communicated with the inside of the mine, the communication point is located in the solid waste layer, the other end of the second inclined shaft extends to the surface of the ground, and the second inclined shaft is connected with the first adsorption tank 9 through the fourth air pump.
And the fourth air pump can pump out the toxic gas in the solid waste layer through the second inclined shaft 13, so that the concentration of the toxic gas in the mine is reduced fundamentally.
In some embodiments, as shown in fig. 2, the toxic gas treatment system further comprises a second inclined shaft 13, one end of the second inclined shaft 13 is communicated with the inside of the mine 16, the communication point is located in the solid waste layer, and the other end extends out of the ground surface and is open, namely an air inlet 24. The first air pump is in the in-process of operation, takes out the toxic gas in the mine, presents little negative pressure in making the mine, and during the outside air can get into the solid waste layer of mine along the second inclined shaft under the effect of little negative pressure, replaces clean air with the toxic gas in the solid waste layer to reduce the concentration of toxic gas in the mine.
In some embodiments, the toxic gas treatment system further comprises a third inclined shaft and a fifth air pump, wherein one end of the third inclined shaft is connected with the mine, the connection point is positioned above the connection point of the first inclined shaft and the mine, the other end of the third inclined shaft extends out of the ground surface and is connected with the fifth air pump, and the outlet of the fifth air pump is connected with the first adsorption tank.
The third inclined shaft is positioned above the first inclined shaft, so that the toxic gas on the upper layer in the mine can be pumped out, and the concentration of the toxic gas in the mine is further reduced.
In some embodiments, the top of the discharge conduit is provided with a windproof cap. Can effectively prevent the reverse flow of wind.
In some embodiments, the first canister contains an oxidant layer and an activated carbon layer, both covering the entire flow cross section of the gas, and the oxidant layer is located upstream of the activated carbon layer. So that the toxic gas can be intercepted and adsorbed integrally.
In some embodiments, the rotary excavating processing system further comprises a solid waste storage chamber 2, a sixth air pump 4 and a second adsorption tank 5, an inlet of the sixth air pump 4 is connected with the solid waste storage chamber 2 through a second air pipe 3, an outlet of the sixth air pump 4 is connected with an inlet of the second adsorption tank 5 through a third air pipe 7, and an outlet of the second adsorption tank 5 is connected with the bottom of the discharge pipeline 8. The solid waste storage chamber 2 is used for storing the bagged solid waste 1 and collecting the toxic gas emitted from the bagged solid waste 1 so as to prevent the toxic gas from being dispersed into the surrounding environment and polluting the surrounding environment.
The solid useless 1 in bags also has toxic gas to escape depositing the in-process, and the solid useless deposit room 2 can be collected toxic gas to absorb the purification in taking out to second adsorption tank 5 through sixth aspiration pump 4, discharge after purifying.
Furthermore, an oxidant layer and an activated carbon layer are contained in the second adsorption tank, the oxidant layer and the activated carbon layer both cover the whole flow cross section of the gas, and the oxidant layer is positioned at the upstream of the activated carbon layer. So that the toxic gas can be intercepted and adsorbed integrally.
Furthermore, the thickness of the oxidant layer and the thickness of the activated carbon layer along the flowing direction of the gas are not particularly limited, and are determined according to the specific construction environment, so as to purify the pollutants in the toxic gas.
A rotary digging treatment method for solid waste containing volatile toxic substances in a mine comprises the following steps:
starting a first air pump, pumping the toxic gas in the mine into a first adsorption tank, adsorbing and purifying, and then discharging;
placing the rotary drilling rig right above the mine, opening the well cover, simultaneously starting a second air pump, carrying the rotary drilling rig with a rotary drilling rig hopper to go deep into the mine, and covering the well cover;
starting a rotary drilling rig to drive a hopper of the rotary drilling rig to perform rotary drilling and waste fixing, and operating a first air pump all the time in the rotary drilling process to pump out volatilized toxic gas;
after the hopper of the rotary excavator is full, lifting the rotary excavating drill rod, opening the well cover, unloading the solid waste in the hopper of the rotary excavator into the hopper, and simultaneously starting a third air pump to pump the toxic gas escaping from the hopper into a first adsorption tank for purification;
and (4) purifying and discharging toxic gas.
The oxidant is selected accordingly based on the processor target gas characteristics. The oxidation part can also adopt catalytic oxidation, combustion method, biological method and the like. If a wet-type oxidant is used, a drying link is required and then adsorption is carried out. The oxidant is selected accordingly based on the processor target gas characteristics. The oxidation part can also adopt catalytic oxidation, combustion method, biological method and the like. If a wet-type oxidant is used, a drying link is required and then adsorption is carried out.
Further, the treatment method also comprises the step of opening a fourth air pump to pump out toxic gas in the solid waste layer in the mine, and discharging the toxic gas after purification by the first adsorption tank.
Further, the treatment method also comprises the step of introducing air into the solid waste layer in the mine through a second inclined shaft.
Further, the treatment method also comprises the steps of bagging the solid waste in the hopper, storing the bagged solid waste in the solid waste storage chamber for sealed storage, starting the sixth air pump, pumping away the toxic gas in the solid waste storage chamber, purifying the toxic gas by the second adsorption tank and discharging the toxic gas.
Example (b):
and in a pollution remediation project for a certain goaf site, the depth of a waste coal well is 77 meters. Criminals rent the coal mine yards and collect and dump hazardous waste specially. 4 people die due to poisoning in situ because of toxic gas generated by chemical reaction in the holes. After the incident takes place, the government immediately becomes emergency treatment command department, carries out emergency treatment to the barreled discarded object of on-the-spot discovery. And then performing cement cover injection and sealing storage on the accident well. The repair engineering needs to firstly carry out dredging treatment on solid wastes of an accident well, then carry out rotary digging treatment on pollutants of a main well of a mine, and carry out construction according to the following steps:
1. and (5) constructing the inclined shaft. The inclined shaft is used for an air exhaust hole and a sampling hole. The construction inclined shaft around the main shaft is communicated with the accident shaft, the inclined shaft is 30-45 degrees, and the diameter of the inclined shaft
And (4) setting a sleeve for grouting and sealing, sealing a wellhead flange, and connecting the flange with a ball valve.
2. Installing an air exhaust system and opening a cover. Firstly, an air pump is installed at the wellhead of an inclined shaft 1, the tail end of the air pump is connected with an activated carbon tank, and an automatic monitoring and early warning device is arranged at the tail end of an activated carbon pipe. And starting an air pump to pump the gas in the inclined shaft 1, keeping negative pressure for a certain time, opening a wellhead flange of the inclined shaft 2, allowing the air to enter the accident well from the inclined shaft 2, replacing toxic gas in the solid waste, pumping out the toxic gas from the ground along the inclined shaft 1, oxidizing and adsorbing the toxic gas by an activated carbon tank to reach the standard, and discharging the air from the high altitude. After the process is kept circulating for a certain time, an air exhaust pipe is arranged at the position of about 2 meters of the excavation depth at the periphery of the wellhead to maintain air exhaust, and the exhausted air is oxidized and adsorbed by an activated carbon tank. And then, constructing a ring beam 2 meters around the main well to protect the well mouth and increase the strength of rock and soil mass around the well mouth, so that an operation platform is formed, and the collapse of the well mouth is prevented while the operation of the rotary drilling rig is facilitated. And opening the concrete well cover, and quickly installing the movable well cover, wherein the movable well cover is arranged above the accident well and is vertical to the rotary excavator. The well lid covers the accident well completely to the perpendicular machine of digging soon transversely opens, and in the activity well lid installation, sets up movable suction hood at the well head, continuously extracts the gas that the loss reaches the earth's surface, and the gas of extraction is connected to exhaust treatment system through the pipeline and is handled emission after up to standard. And a fence is arranged around the working area.
3. And (5) carrying out rotary excavation protection on the accident well.
And extracting the solid waste of the accident well to the ground by adopting a rotary digging extraction method, and then carrying out next safety treatment.
The rotary drilling rig is fixed on the drilling operation platform, and the drill bit is adjusted according to the actual operation condition.
After each time of starting the rotary drilling rig, firstly stopping the rotary drilling bit right above the movable well cover, vertically dropping the rotary drilling bit after the well cover is opened, closing the well cover after the rotary drilling bit completely enters the accident well, and dropping the rotary drilling bit to a corresponding depth for drilling. The amount to be excavated is up to 1m3When the well cover is opened, the drill bit filled with solid waste is lifted out of the well mouth, and the well cover is transferred to a discharging hopper to discharge.
The accident well rotary digging is operated by personnel with professional qualifications, and in order to ensure the safety and the operation period, the single opening and closing completion time is not more than 1 min; the well lid is opened before the rotary digging head is lifted out of the ground, and the rotary digging head is closed when inserted; when the daily operation is completed, the well cover is closed, and the round hole of the well cover is sealed, so that the purposes of sealing the accident well and preventing rainwater from entering are achieved. The exhaust pipe keeps the ventilation operation state all the time in the rotary digging process, and waste gas enters the adsorption tank for treatment, so that negative pressure is formed in the well, and the volatile organic waste gas at the well mouth is prevented from escaping. The extracted gas is conveyed to a waste gas treatment system through a pipeline to be treated and discharged after reaching the standard.
When the rotary digging operation is not carried out at night, the movable well cover and the air draft system are closed, a sealing measure at an air leakage position is made, and if the peculiar smell on site is heavy, the air draft system needs to be opened for air draft.
4. Solid waste unloading and transferring
And (4) bagging the solid wastes subjected to rotary digging in a manner of blanking by a blanking hopper and loading into a ton bag or directly blanking and loading into the ton bag. In the actual operation process, because the pollutants can produce certain waste gas pollution in the process that the pollutants are poured into the lower hopper through the rotary drilling rig to be bagged, a set of side air suction gas collecting hood is arranged above the lower hopper, and the waste gas dissipated in the pollutants is collected in the feeding process and enters the adsorption tank for adsorption treatment. The discharge hopper is slowly and vertically lifted in the discharging process, so that solid waste of the accident well is prevented from spilling and leaking.
And carrying out on-site pH inspection on the solid waste of each ton of bags, preliminarily judging the acidity and the alkalinity, and identifying. And (5) filling the solid wastes into ton bags, sealing, and transferring to a corresponding area of the film greenhouse by using a forklift for stacking.
And (4) conveying the packaged solid waste residues to a temporary storage area in the repairing film greenhouse through an east-side annular line of the field by a forklift, and making an identification label.
5. Solid waste stockpiling
According to the difference of pH and acid-base properties of the solid waste, the solid waste is stacked in a membrane greenhouse in a partition mode, and a schematic diagram of a stacking area is shown in figure 3. The greenhouse is provided with an air pump for continuous air draft to form micro negative pressure, and the activated carbon tank of the pumped gas well is exhausted to the atmosphere at high altitude after adsorption and oxidation reach the standard. And a specially-assigned person is also arranged for management, and the specially-assigned person is not allowed to enter the system randomly.
6. Monitoring and early warning system
And a real-time dynamic monitoring and early warning device is arranged at the tail end of each activated carbon tank. The device has a data storage function and an alarm system, and when the pollutant emission concentration reaches an early warning value, the system can give an alarm in time and is in linkage emergency.
The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure, and various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.
Claims (13)
1. The utility model provides a contain volatile toxic material solid useless processing system that digs soon in mine which characterized in that: the system comprises a mine, a rotary excavating device, a hopper and a toxic gas treatment system, wherein the mine is filled with volatile toxic substance-containing solid waste to be treated;
the rotary digging device comprises a rotary digging drill, a rotary digging drill rod and a rotary digging machine hopper, the rotary digging machine hopper is connected with the rotary digging drill through the rotary digging drill rod, and the rotary digging machine hopper extends into the mine and is used for rotary digging solid waste in the mine;
the hopper is arranged close to an opening at the upper end of the mine, and a set height is reserved between the lower part of the hopper and the ground;
the toxic gas treatment system comprises a first inclined shaft, a first air suction pump, a first air suction gas collecting hood, a second air suction pump, a first gas pipe, a second air suction gas collecting hood, a third air suction pump, a first adsorption tank and a discharge pipeline, wherein one end of the first inclined shaft is communicated with the inside of the mine, the other end of the first inclined shaft extends to the ground and is connected with an inlet of the first air suction pump, and an outlet of the first air suction pump is connected with the first gas pipe;
the first air suction and gas collection hood is arranged on the side surface of the upper end opening of the mine and is connected with the first air delivery pipe through a second air suction pump;
the second air suction and gas collection hood is arranged on the side surface of the upper end opening of the hopper and is connected with the first gas conveying pipe through a third air suction pump;
the first gas pipe is connected with the lower end of the discharge pipeline through the first adsorption tank, the discharge pipeline is vertically arranged, the height of the discharge pipeline is greater than 10 meters, and an adsorbent is contained in the first adsorption tank.
2. The rotary excavation processing system of claim 1, wherein: the included angle between the first inclined shaft and the vertical direction is 30-45 degrees.
3. The rotary excavation processing system of claim 1, wherein: the top opening of the mine is covered with a well cover, a through hole is formed in the middle of the well cover, and the rotary drilling rod penetrates through the through hole.
4. The rotary excavation processing system of claim 1, wherein: the toxic gas treatment system further comprises a second inclined shaft and a fourth air pump, one end of the second inclined shaft is communicated with the inside of the mine, the communication point is located in the solid waste layer, the other end of the second inclined shaft extends to the ground surface, and the second inclined shaft is connected with the first adsorption tank through the fourth air pump.
5. The rotary excavation processing system of claim 4, wherein:
the toxic gas treatment system further comprises a second inclined shaft, one end of the second inclined shaft is communicated with the interior of the mine, the communication point is located in the solid waste layer, and the other end of the second inclined shaft extends out of the ground surface and is provided with an opening.
6. The rotary excavation processing system of claim 5, wherein:
the toxic gas treatment system further comprises a third inclined shaft and a fifth air pump, one end of the third inclined shaft is connected with the mine, the connection point is located above the connection point of the first inclined shaft and the mine, the other end of the third inclined shaft extends out of the ground surface and is connected with the fifth air pump, and an outlet of the fifth air pump is connected with the first adsorption tank.
7. The rotary excavation processing system of claim 6, wherein: the first adsorption tank is internally filled with an oxidant layer and an activated carbon layer, the oxidant layer and the activated carbon layer both cover the whole flow cross section of gas, and the oxidant layer is positioned at the upstream of the activated carbon layer.
8. The rotary excavation processing system of claim 7, wherein: the rotary excavating processing system further comprises a solid waste storage chamber, a sixth air pump and a second adsorption tank, wherein an inlet of the sixth air pump is connected with the solid waste storage chamber through a pipeline, an outlet of the sixth air pump is connected with an inlet of the second adsorption tank through a pipeline, and an outlet of the second adsorption tank is connected with the bottom of the discharge pipeline.
9. The rotary excavation processing system of claim 8, wherein: the second adsorption tank is filled with activated carbon, and the activated carbon covers the whole flow cross section of the gas.
10. A method for treating the volatile toxic substance solid waste rotary excavating treatment system in the mine according to any one of the claims 9, which is characterized in that: the method comprises the following steps:
starting a first air pump, pumping the toxic gas in the mine into a first adsorption tank, adsorbing and purifying, and then discharging;
placing the rotary drilling rig right above the mine, opening the well cover, simultaneously starting a second air pump, carrying the rotary drilling rig with a rotary drilling rig hopper to go deep into the mine, and covering the well cover;
starting a rotary drilling rig to drive a hopper of the rotary drilling rig to perform rotary drilling and waste fixing, and operating a first air pump all the time in the rotary drilling process to pump out volatilized toxic gas;
after the hopper of the rotary excavator is full, lifting the rotary excavating drill rod, opening the well cover, unloading the solid waste in the hopper of the rotary excavator into the hopper, and simultaneously starting a third air pump to pump the toxic gas escaping from the hopper into a first adsorption tank for purification;
and (4) purifying and discharging toxic gas.
11. The method of claim 10, wherein: the treatment method also comprises the step of opening a fourth air pump to pump out toxic gas in the solid waste layer in the mine, and discharging the toxic gas after the toxic gas is purified by the first adsorption tank.
12. The method of claim 10, wherein: the treatment method also comprises the step of introducing air into the solid waste layer in the mine through the second inclined shaft.
13. The method of claim 10, wherein: the treatment method also comprises the steps of bagging the solid waste in the hopper, storing the bagged solid waste in the solid waste storage chamber for sealed storage, starting the sixth air pump, pumping away the toxic gas in the solid waste storage chamber, purifying the toxic gas by the second adsorption tank and then discharging the toxic gas.
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