CN212633829U - System for treating medium-low concentration petroleum hydrocarbon contaminated soil - Google Patents
System for treating medium-low concentration petroleum hydrocarbon contaminated soil Download PDFInfo
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- CN212633829U CN212633829U CN202020188914.6U CN202020188914U CN212633829U CN 212633829 U CN212633829 U CN 212633829U CN 202020188914 U CN202020188914 U CN 202020188914U CN 212633829 U CN212633829 U CN 212633829U
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Abstract
The utility model discloses a system for handle middle and low concentration petroleum hydrocarbon pollutes soil, this system is including piling body basis prevention of seepage system, pile petroleum hydrocarbon and pollute soil in piling body basis prevention of seepage system top, form the heap body, lay heap body gas charging system in the heap body, heap body liquid charging system, soil monitoring system and waste gas collection system, filtration liquid collection processing system, lay rain-proof cover system in the top of the heap body simultaneously, transplant the plant on the surface of the heap body, and add the earthworm, form and collect microorganism, the animal, the artificial ecosystem that the plant is as an organic whole, pollute soil with handling middle and low concentration petroleum hydrocarbon. The utility model discloses the system combines to establish artificial ecosystem through microorganism, animal and plant, strengthens biological heap body pollutant degradation efficiency, and green, economy, high-efficient realization well low concentration petroleum hydrocarbon pollute the restoration of soil.
Description
Technical Field
The utility model belongs to the technical field of organic contaminated soil bioremediation, concretely relates to system for handle middle-low concentration petroleum hydrocarbon contaminated soil.
Background
With the continuous increase of petroleum production and consumption, the pollution problem caused by the petroleum substances entering the environment is increasingly serious. The soil petroleum pollution mainly comes from accident leakage, oil field and refinery, petroleum wastewater irrigation and the like. According to incomplete statistics, the oil field area has more than 20 million heavy polluted sites, the high-concentration petroleum polluted soil and the accumulated amount of oil sludge exceed 200 million tons, and the petroleum content of about 15 million hectares of land exceeds a safety value. The petroleum hydrocarbon pollution of the soil not only affects the physicochemical property and normal function of the soil, but also causes the change of other environmental elements, such as the distribution of indigenous microorganisms and animal and plant populations. Petroleum pollutants in the soil may enter surface water along with surface runoff or enter underground through soil leaching and infiltration, causing surface and underground water pollution. Petroleum hydrocarbons can enter human or animal bodies through respiration, skin contact, food intake and the like, and cause carcinogenesis, teratogenesis and mutagenesis. Oil pollution of soil has become one of the major problems in the current environmental field. At present, the structure of pollutants in soil is changed by physical, chemical or biological techniques, and the toxicity, the mobility or the volume of the pollutants are reduced, so that the pollution is cleaned and treated. In the European and American countries before the 80 s of the 20 th century, physical and chemical methods are mostly used for soil pollution treatment, such as incineration, vapor extraction, soil cleaning, chemical oxidation and the like. However, physical and chemical remediation techniques generally require a specific site (e.g., incineration), or corresponding specialized facilities (e.g., gas extraction), or use a large amount of chemical agents (e.g., soil washing and chemical oxidation), and thus have disadvantages of high remediation costs and secondary pollution. The biological method has the advantages of low cost, low influence on the environment, no secondary pollution and no damage to the soil environment, is gradually developed and matured, becomes an important component of the repair technology system of developed countries in Europe and America, has wide application prospect in China, and is still in the starting stage.
The existing petroleum hydrocarbon polluted soil biological treatment means adopts microorganisms or plants independently under most conditions, the repair efficiency is not high, and the treatment period is long.
At present, no report related to the construction of an artificial ecosystem by integrating microorganisms, animals and plants for repairing petroleum hydrocarbon polluted soil is found.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a system for handling low concentration petroleum hydrocarbon pollutes soil is provided, this system collect microorganism, animal and plant artificial ecosystem as an organic whole, through strengthening between plant-microorganism root system interaction, soil animal and microorganism and the root system interaction processing low concentration petroleum hydrocarbon pollutes soil, reaches the efficiency that improves biodegradable petroleum hydrocarbon.
The utility model discloses solve above-mentioned technical problem with following technical scheme:
the utility model relates to a system for handle middle and low concentration petroleum hydrocarbon pollutes soil, this system is including piling body basis anti-seepage system, pile up middle and low concentration petroleum hydrocarbon and pollute soil in piling body basis anti-seepage system top, form the heap body, lay the heap body gas charging system that can let in the air simultaneously in the heap body, can let in the heap body topping up system of nutrient solution and degradation fungus, and set up the heap body soil monitoring system and the waste gas collection system that can monitor humiture and oxygen content in the heap body, filtration liquid collection processing system, lay rain-proof cover system in the top of the heap body simultaneously, and shift up the plant of cultivating on the surface of the heap body and add the good earthworm of cultivation in the heap body, thereby constitute the microorganism, animals, the artificial ecosystem of plant, pollute soil with handling middle and low concentration petroleum hydrocarbon.
Pile body basis anti-seepage system includes earth's surface concrete layer, lays two-layer HDPE anti-seepage membrane on earth's surface concrete layer, lays geotechnological cloth in the middle of the two-layer anti-seepage membrane.
The device comprises a ground surface concrete layer, a partition wall, an activated carbon absorption tower, a percolate storage tank and a percolate processor, wherein the ground surface concrete layer is a slope type ground surface concrete layer, the slope bottom of the ground surface concrete layer is provided with the partition wall, the outer side of the partition wall is provided with the activated carbon absorption tower, the percolate storage tank and the percolate processor, the inner side of the partition wall is provided with a percolate collecting region and a waste gas collecting region, the percolate collecting region is provided with a percolate collecting pipe, the percolate collecting pipe is connected with the inlet end of; and the waste gas collecting area is provided with an induced draft fan, and the induced draft fan is connected with the active carbon absorption tower through a pipeline.
The stack body inflation system comprises a plurality of ventilation branch pipes, an inflation main pipe and an air blower, wherein the ventilation branch pipes are arranged in parallel, one end of each ventilation branch pipe is connected with the inflation main pipe, the other end of each ventilation branch pipe is a closed end, air outlets are uniformly distributed on the ventilation branch pipes, and the inflation main pipe is connected with the air blower arranged on the outer side of the stack body.
The heap body liquid filling system includes several flowing back branch pipes, liquid filling trunk, nutrient solution jar, degradation fungus jar, and several flowing back branch pipes parallel arrangement, its one end is connected with the liquid filling trunk, and the other end is the blind end, the equipartition liquid outlet on several flowing back branch pipes, and the liquid filling trunk is connected with the nutrient solution jar and the degradation fungus jar of establishing in the heap body outside, and nutrient solution jar and degradation fungus jar are placed in earth's surface concrete layer's top of slope department.
The heap body soil monitoring system includes soil temperature and humidity sensor and oxygen content survey sensor, regularly monitors the humiture and the oxygen content of the heap body through soil temperature and humidity sensor and oxygen content survey sensor.
The rain-proof cover system is composed of a layer of HDPE film covering the upper surface of the stack.
Compared with the prior art, the utility model discloses the system has following advantage:
1) the utility model discloses an artificial ecosystem is found in microorganism, animal and plant combination, strengthens biological heap body pollutant degradation efficiency, and green, economy, high-efficient the restoration of realizing middle and low concentration petroleum hydrocarbon contaminated soil.
2) The microorganism adopted by the utility model utilizes petroleum hydrocarbon as carbon source; the adopted plants promote the growth of degrading bacteria and secrete related degrading enzymes to degrade petroleum hydrocarbon through direct absorption or root system activity, and mycorrhiza can also promote degradation; the adopted animals restore the petroleum hydrocarbon polluted soil through the direct action of absorption, transformation and decomposition, or the indirect action of improving the physical and chemical properties of the soil, improving the soil fertility and promoting the growth of plants and microorganisms, so that the comprehensive restoration treatment is realized, and the restoration efficiency of the soil is improved.
Drawings
FIG. 1 is a schematic structural diagram of a system for treating medium-low concentration petroleum hydrocarbon contaminated soil according to the present invention.
Fig. 2 is a side view of the combination of the heap base impermeable system and the biological heap of fig. 1.
In the figure: 1-a nutrient solution tank; 2-liquid pump A; 3-degrading the bacteria tank; 4-a stack foundation anti-seepage system; 5-percolate collecting pipe; 6-ventilation branch pipe; 7-a liquid discharge branch pipe; 8-inflating the dry pipe; 9-liquid-filled main pipe; 10-a soil temperature and humidity sensor; 11-an oxygen content measurement sensor; 12-a blower; 13-valve a; 14-an electromagnetic flow meter; 15-valve B; 16-valve C; 17-a percolate storage tank; 18-valve D; 19-liquid pump B; 20-a filtrate processor; 21-valve E; 22-plant nursery room; 23-earthworm culturing room; 24-a bio-stack; 25-a draught fan; 26-an activated carbon adsorption tower; 27-surface concrete layer; 28-partition walls; 29-two HDPE barrier films; 30-crushed stone sand; 31-HDPE films; 32-lower equipment installation area; 33-a plant; 34-equipment installation area above.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 and fig. 2, the system for treating the soil polluted by the medium-low concentration petroleum hydrocarbon of the utility model comprises a pile foundation anti-seepage system 4, the pretreated middle-low concentration petroleum hydrocarbon polluted soil is piled above the pile foundation anti-seepage system 4 to form a biological pile 24, a pile inflation system which can be filled with air and a pile liquid filling system which can be filled with nutrient solution and degradation bacteria are laid in the biological pile 24, a heap soil monitoring system capable of monitoring temperature, humidity and oxygen content, a waste gas collecting system and a percolate collecting and treating system are arranged in the biological heap 24, meanwhile, a rain-proof covering system is laid above the biological heap 24, the cultivated plants 33 are cultivated on the surface of the biological heap 24, the cultivated earthworms are added in the biological heap 24, thereby constructing an artificial ecosystem combining microorganisms, animals and plants to treat the soil polluted by the petroleum hydrocarbon with medium and low concentration.
The stack foundation seepage-proofing system 4 comprises a ground surface concrete layer 27, two HDPE seepage-proofing films 29 are laid on the ground surface concrete layer 27, and a geotextile is laid between the two seepage-proofing films 29.
The stack body inflation system comprises a plurality of ventilation branch pipes 6, an inflation main pipe 8 and an air blower 12, wherein the ventilation branch pipes 6 are arranged in parallel, one end of each ventilation branch pipe is connected with the inflation main pipe 8, the other end of each ventilation branch pipe is a closed end, air outlets are uniformly distributed on the ventilation branch pipes 6, the inflation main pipe 8 is connected with the air blower 12 arranged on the outer side of the stack body through a pipeline, and a valve A13 is arranged on the connecting pipeline.
The liquid filling system for the stack body comprises a plurality of liquid discharging branch pipes 7, a liquid filling main pipe 9, a nutrient solution tank 1 and a degradation bacterium tank 3, wherein the liquid discharging branch pipes 7 are arranged in parallel, one end of each liquid discharging branch pipe 7 is connected with the liquid filling main pipe 9, the other end of each liquid discharging branch pipe is a closed end, liquid outlets are uniformly distributed on the liquid discharging branch pipes 7, the liquid filling main pipe 9 is connected with the nutrient solution tank 1 and the degradation bacterium tank 3 which are arranged on the outer side of the stack body, the nutrient solution tank 1 is connected with the degradation bacterium tank 3 in parallel, the outlets of the nutrient solution tank 1 and the degradation bacterium tank 3 are respectively provided with a valve C16 and a valve B15, and a liquid pump A2 and an electromagnetic flow meter.
The heap body soil monitoring system includes soil temperature and humidity sensor 10 and oxygen content survey sensor 11, monitors the humiture and the oxygen content of the heap body through soil temperature and humidity sensor 10 and oxygen content survey sensor 11 regularly.
The rain-proof cover system consists of a layer of HDPE film 31 covering the surface of the bio-mass 24.
As shown in fig. 2, the surface concrete layer 27 of the present invention is a slope surface concrete layer, a partition wall 28 is disposed at the slope bottom of the surface concrete layer, a lower equipment installation area 32 is disposed outside the partition wall 28, and the lower equipment installation area 32 can be provided with an air blower 12, a leachate storage tank 17, a leachate processor 20 and an activated carbon absorption tower 26; the inner side of the partition wall 28 is provided with a penetrating fluid collecting region and a waste gas collecting region (not shown in the figure), penetrating fluid and waste gas generated by the biological heap 24 are respectively introduced into the penetrating fluid collecting region and the waste gas collecting region, the penetrating fluid collecting region is provided with a percolate collecting pipe 5, the percolate collecting pipe 5 is connected with the inlet end of a percolate storage tank 17, a valve D18 and a liquid pump B19 are arranged on a connecting pipeline, the outlet end of the percolate storage tank 17 is connected with a percolate processor 20 through a pipeline, and the pipeline is provided with a valve E21; gravel sand 30 can be put above the percolate collecting pipe 5 to increase the anti-seepage effect; and the waste gas collecting area is provided with an induced draft fan 25, and the induced draft fan 25 is connected with an active carbon absorption tower 26 through a pipeline.
An upper equipment installation area 34 is arranged at the top of the slope of the surface concrete layer, and the upper equipment installation area 34 is provided with a nutrient solution tank 1 and a degradation bacteria tank 3.
The utility model is provided with a plant seedling raising chamber 22 and an earthworm cultivating chamber 23 outside a biological pile body 24.
The utility model discloses handle system of middle-low concentration petroleum hydrocarbon contaminated soil, its operating method includes following step:
(1) soil early detection: the method comprises the steps of detecting petroleum hydrocarbon polluted soil to be treated, wherein detection indexes comprise maximum water holding capacity of the soil, pH, organic matters, organic carbon, available nitrogen, available phosphorus, water content, total amount of microbial colonies, total amount of bacterial colonies of petroleum hydrocarbon degrading bacteria, pollutant concentration and specific components, and the detection indexes are used for bioremediation feasibility evaluation and engineering design parameters of the soil.
(2) Soil pretreatment: sieving petroleum hydrocarbon contaminated soil, removing impurities by using a 2cm multiplied by 2cm grid, uniformly mixing the soil and added repairing substances by using a pseudo-ginseng grey soil mixing machine or an ALLU sieving crushing bucket, wherein the particle size of soil particles is less than 15mm, and then using a liquid pump A2 to mix KNO in a nutrient solution tank 13With KH2PO4And (3) conveying the mixed solvent into soil to adjust the ratio of organic carbon in the soil: available nitrogen: the effective phosphorus molar mass ratio is 100:10:1, the soil water content is adjusted to be 80% of the maximum water holding capacity of the soil, and meanwhile, bean pulp powder with the particle size of 1.0mm-2mm is added, the addition amount of the bean pulp powder is 2% of the soil mass, so that the air permeability of the petroleum hydrocarbon polluted soil is increased; meanwhile, according to the total amount of microorganisms and degrading bacteria colonies in the soil, degrading bacteria liquid in a degrading bacteria tank 3 is added according to the conventional treatment requirement, the adding amount of the degrading bacteria liquid is 0.1-1% of the mass of the soil, a biosurfactant rhamnolipid can be added according to the repair requirement, the using amount of the biosurfactant rhamnolipid is 0.1-1% of the mass of the soil, and the biosurfactant is uniformly mixed so as to increase the bioavailability of petroleum hydrocarbon.
The degrading bacteria are degrading bacteria flora obtained after domestication of petroleum hydrocarbon polluted soil, and comprise Pseudomonas (Pseudomonas), Bacillus (Bacillus) and Acinetobacter (Acinetobacter), and can become earthworm food sources and enhance the root system effect of plants.
(3) And (3) piling up a soil pile: firstly, constructing a slope-shaped heap foundation anti-seepage system 4 on the ground surface, and then laying a heap gas-filled system above the heap foundation anti-seepage system 4; stacking a layer of pretreated soil (the thickness is 50cm) above the pile inflation system, then laying the pile filling system, alternately laying the pile inflation system and the pile filling system until the pretreated petroleum hydrocarbon pollutes the soil to form a pile, then inserting a soil temperature and humidity sensor 10 and an oxygen content measuring sensor 11 into the pile, and finally laying a layer of HDPE film 31 above the pile to serve as a rainproof covering system.
The construction method of the stack foundation seepage-proofing system comprises the following steps: carrying out civil engineering on the ground of the yard, and constructing a slope type ground surface concrete layer 27, wherein the thickness of the slope type ground surface concrete layer 27 is at least 50mm, and the gradient is 3-5 degrees; two layers of HDPE impermeable membranes 29 are laid above the surface concrete layer 27, a layer of geotextile is laid between the two layers of impermeable membranes 29, and a percolate collecting pipe 5 and a partition wall 28 are laid at the slope bottom of the surface concrete layer 27, so that the stack foundation impermeable system 4 is formed. The upper part of the percolate collecting pipe 5 can be paved with filtering massive substances such as gravel sand 30 and the like; the partition wall 28 may separate the waste gas and liquid treatment device from the biological stack permeate collection region.
The construction method of the stack inflation system comprises the following steps: and laying a ventilation branch pipe 6 above the pile foundation anti-seepage system 4, wherein the ventilation branch pipe 6 is connected with an inflation main pipe 8, and the inflation main pipe 8 is connected with a blower 12, so that a pile inflation system is formed.
The construction method of the pile body liquid filling system comprises the following steps: after a layer of pretreated soil is stacked above the pile inflation system and the pile foundation anti-seepage system, a liquid discharge branch pipe 7 is laid, the liquid discharge branch pipe 7 is connected with a liquid filling main pipe 9, and the liquid filling main pipe 9 is connected with the nutrient solution tank 1 and the degradation bacteria tank 3, so that the pile filling system is formed.
In the step (4), the earthworms are Eisenia foetida (Eisenia foetda), the weight of the earthworms is 0.3-0.4g, and the healthy and ring-shaped mature earthworms are obtained after clearing intestines for 24 hours in a dark condition.
In the step (6), the leachate processor is an immobilized biological aerated filter, activated carbon is filled in the immobilized biological aerated filter, and the adopted immobilized microorganisms mainly comprise Pseudomonas aeruginosa (Pseudomonas aeruginosa) and Rhodococcus erythropolis (Rhodococcus erythropolis).
(4) Constructing a biological heap: in the plant-cultivating chamber 22, H with a concentration of 10% is used2O2Sterilizing alfalfa and ryegrass seeds, accelerating germination by using an illumination incubator, and inoculating rhizobia and ryegrass with mycorrhizal fungi by using an inoculation liquid. Three days later, the inoculated alfalfa is inoculatedTransplanting the ryegrass to the biological heap 24, punching holes on the HDPE film 31 on the surface of the biological heap 24, wherein the hole distance is 10-70cm, and planting two plants in a crossed manner. Culturing Eisenia foetida in an earthworm culturing chamber 23, selecting mature earthworms with the weight of 0.3-0.4g, cleaning intestines for 24 hours in the absence of light, adding the healthy and continuous earthworms into a biological heap 24, and applying 1-10kg of earthworms to each cubic soil, thereby constructing the biological heap 24 of an artificial ecosystem integrating microorganisms, plants and animals.
(5) Daily monitoring and maintenance of the biological pile: the temperature, humidity and oxygen content of the biological reactor 24 are regularly monitored every day, and according to the detection result of the sensor, fresh air enters the reactor through the air-filling main pipe 8 and the ventilation branch pipe 6 through the air blower 12 and the valve A13, so that the oxygen content of the reactor is not lower than 8%. According to the regular detection of the water content of the soil biological pile, the soil drill samples every month to obtain the composition of organic carbon, available nitrogen, available phosphorus and pollutant concentration and the number of the types of degradation functional bacteria, and KNO is prepared through the nutrient fluid tank 13With KH2PO4And (3) mixing the solvents, adding a nutrient source into the biological pile 24 in time in the repairing process, adding degrading bacteria into the degrading bacteria tank 3, estimating the removal rate of pollutants, and adjusting the nutrition of the pile and the quantity of the degrading bacteria in time to maintain the efficient removal of the pollutants.
(6) Waste gas and waste liquid treatment: when the stack body inflation system inflates the stack body, the handheld portable PID is used for monitoring the air in the waste gas collecting area, if volatile organic compounds are detected, the induced draft fan 25 is started to introduce the generated waste gas into the activated carbon adsorption tower 26 to be treated and discharged into the atmosphere after reaching the standard. The percolate generated by the stack automatically flows into a percolate collecting area, enters a percolate storage tank 17 through a percolate collecting pipe 5, then enters a percolate processor 20 through a valve E21 to be processed and recycled or discharged after reaching the standard.
The leachate processor adopts an immobilized biological aerated filter, activated carbon is filled in the immobilized biological aerated filter, and immobilized microorganisms in the immobilized biological aerated filter mainly comprise Pseudomonas aeruginosa (Pseudomonas aeruginosa) and Rhodococcus erythropolis (Rhodococcus erythropolis).
The height of the biological reactor is 1m-3m, and the length and the width can be adjusted according to the field.
Aerify the main pipe 8 and adopt the PVC pipe of external diameter 50mm, fill liquid main pipe 9 adopts the PVC pipe of external diameter 15 mm. When in laying, a layer of cotton gauze is wrapped on the ventilation branch pipe 6 and the liquid discharge branch pipe 7 to play the roles of protection and filtration. In order to avoid short circuit caused by the blast process, the distance between the branch pipes and the edge of the soil heap is not less than 0.2m, the distance between the branch pipes and the edges of two sides of the width direction of the biological heap body is 0.5m respectively, and the distance between the branch pipes is 1 m.
The transplanted plants comprise alfalfa (Medicago sativa) and ryegrass (Lolium perenne), the two plants are planted in a crossed manner, the alfalfa with the thick main root and the developed long root system can combine with the ryegrass with the developed fibrous root system to form an effective root system effect with degradation bacteria in a biological pile, the biodegradation of petroleum hydrocarbon is enhanced, and meanwhile, plant fallen leaves, hay and the like can be used as earthworm food.
The utility model discloses the earthworm that the system adopted can improve the permeability of biological heap body, protect water nature and protect fertility, and the metabolite is favorable to the reproduction of microorganism and the absorption utilization of plant roots.
The system of the utility model utilizes the multiple-effect coupling of microorganism, plant and animal to strengthen the biodegradation in the petroleum hydrocarbon polluted soil, and realizes the pollution removal rate of 70-90 percent within 3-6 months.
Claims (7)
1. A system for treating soil polluted by medium and low concentration petroleum hydrocarbon is characterized in that: the system comprises a pile foundation anti-seepage system, wherein the soil polluted by the petroleum hydrocarbon with the medium and low concentration is piled above the pile foundation anti-seepage system to form a pile, a pile inflation system capable of introducing air and a pile liquid filling system capable of introducing nutrient solution and degrading bacterial liquid are paved in the pile, a pile soil monitoring system capable of monitoring the temperature, humidity and oxygen content, a waste gas collecting system and a percolate collecting and processing system are arranged in the pile, a rainproof covering system is paved above the pile, cultivated plants are cultivated on the surface of the pile, and cultivated earthworms are added in the pile, so that an artificial ecosystem combining microorganisms, animals and plants is constructed to treat the soil polluted by the petroleum hydrocarbon with the medium and low concentration.
2. The system for treating soil contaminated with medium to low concentrations of petroleum hydrocarbons as recited in claim 1, further comprising: the pile foundation seepage-proofing system comprises a ground surface concrete layer, two HDPE seepage-proofing films are laid on the ground surface concrete layer, and a geotextile is laid in the two seepage-proofing films.
3. The system for treating soil contaminated with medium to low concentrations of petroleum hydrocarbons as recited in claim 2, further comprising: the device comprises a ground surface concrete layer, a partition wall, an activated carbon absorption tower, a percolate storage tank and a percolate processor, wherein the ground surface concrete layer is a slope type ground surface concrete layer, the slope bottom of the ground surface concrete layer is provided with the partition wall, the outer side of the partition wall is provided with the activated carbon absorption tower, the percolate storage tank and the percolate processor, the inner side of the partition wall is provided with a percolate collecting region and a waste gas collecting region, the percolate collecting region is provided with a percolate collecting pipe, the percolate collecting pipe is connected with the inlet end of; and the waste gas collecting area is provided with an induced draft fan, and the induced draft fan is connected with the active carbon absorption tower through a pipeline.
4. The system for treating soil contaminated with medium to low concentrations of petroleum hydrocarbons as claimed in claim 1 or claim 2, wherein: the stack body inflation system comprises a plurality of ventilation branch pipes, an inflation main pipe and an air blower, wherein the ventilation branch pipes are arranged in parallel, one end of each ventilation branch pipe is connected with the inflation main pipe, the other end of each ventilation branch pipe is a closed end, air outlets are uniformly distributed on the ventilation branch pipes, and the inflation main pipe is connected with the air blower arranged on the outer side of the stack body.
5. The system for treating soil contaminated with medium to low concentrations of petroleum hydrocarbons as claimed in claim 1 or claim 2, wherein: the heap body liquid filling system includes several flowing back branch pipes, liquid filling trunk, nutrient solution jar, degradation fungus jar, and several flowing back branch pipes parallel arrangement, its one end is connected with the liquid filling trunk, and the other end is the blind end, the equipartition liquid outlet on several flowing back branch pipes, and the liquid filling trunk is connected with the nutrient solution jar and the degradation fungus jar of establishing in the heap body outside, and nutrient solution jar and degradation fungus jar are placed in earth's surface concrete layer's top of slope department.
6. The system for treating soil contaminated with medium to low concentrations of petroleum hydrocarbons as claimed in claim 1 or claim 2, wherein: the heap body soil monitoring system includes soil temperature and humidity sensor and oxygen content survey sensor, regularly monitors the humiture and the oxygen content of the heap body through soil temperature and humidity sensor and oxygen content survey sensor.
7. The system for treating soil contaminated with medium to low concentrations of petroleum hydrocarbons as claimed in claim 1 or claim 2, wherein: the rain-proof cover system consists of a layer of HDPE film covering the surface of the stack.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111215438A (en) * | 2020-02-20 | 2020-06-02 | 广西博世科环保科技股份有限公司 | A system and method for treating medium and low concentration petroleum hydrocarbon polluted soil |
| CN116274337A (en) * | 2022-12-28 | 2023-06-23 | 内蒙古恒盛环保科技工程有限公司 | Synergistic restoration method for microorganism and plant in oil-contaminated soil |
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2020
- 2020-02-20 CN CN202020188914.6U patent/CN212633829U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111215438A (en) * | 2020-02-20 | 2020-06-02 | 广西博世科环保科技股份有限公司 | A system and method for treating medium and low concentration petroleum hydrocarbon polluted soil |
| CN116274337A (en) * | 2022-12-28 | 2023-06-23 | 内蒙古恒盛环保科技工程有限公司 | Synergistic restoration method for microorganism and plant in oil-contaminated soil |
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