CN107350280A - The device and method of petroleum hydrocarbon contaminated soil is repaired using garden waste - Google Patents

The device and method of petroleum hydrocarbon contaminated soil is repaired using garden waste Download PDF

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Publication number
CN107350280A
CN107350280A CN201710813265.7A CN201710813265A CN107350280A CN 107350280 A CN107350280 A CN 107350280A CN 201710813265 A CN201710813265 A CN 201710813265A CN 107350280 A CN107350280 A CN 107350280A
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CN
China
Prior art keywords
layer
petroleum hydrocarbon
soil
vent
contaminated soil
Prior art date
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Pending
Application number
CN201710813265.7A
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Chinese (zh)
Inventor
余龙
杨志龙
张茜
朱洪恩
华鹏飞
蔡兵兵
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WUHAN NUSON ENVIRONMENT CO Ltd
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WUHAN NUSON ENVIRONMENT CO Ltd
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Priority to CN201710813265.7A priority Critical patent/CN107350280A/en
Publication of CN107350280A publication Critical patent/CN107350280A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09CRECLAMATION OF CONTAMINATED SOIL
    • B09C1/00Reclamation of contaminated soil
    • B09C1/10Reclamation of contaminated soil microbiologically, biologically or by using enzymes
    • B09C1/105Reclamation of contaminated soil microbiologically, biologically or by using enzymes using fungi or plants
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09BDISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00Destroying solid waste or transforming solid waste into something useful or harmless
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09CRECLAMATION OF CONTAMINATED SOIL
    • B09C1/00Reclamation of contaminated soil
    • B09C1/005Extraction of vapours or gases using vacuum or venting

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mycology (AREA)
  • Soil Sciences (AREA)
  • Biotechnology (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Microbiology (AREA)
  • Molecular Biology (AREA)
  • Health & Medical Sciences (AREA)
  • Botany (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The present invention proposes a kind of device that petroleum hydrocarbon contaminated soil is repaired using garden waste, including being bottom plate by PVC perforated plates, PVC board is the processing unit of four cycle side plates, the gravel layer laid successively from the bottom to top in processing unit, sponge gourd network layers, tree trimming layer, grass cuttings layer, cinder layer, nonwoven layer and mixed layer, mixed layer seeding lawn plant, main vent is arranged in gravel layer and air inlet end is provided with blower fan, main vent is provided with some branch vents, branch vent sequentially passes through gravel layer, sponge gourd network layers, tree trimming layer, grass cuttings layer, cinder layer, nonwoven layer and mixed layer, branch vent is provided with some air vents, branch vent is provided with the position parcel non-woven fabrics of air vent, the air outlet of branch vent is equipped with sealing-plug.In the layer structure of ventilation, petroleum hydrocarbon contaminated soil is repaired using the lawn plant absorption to soil petroleum hydrocarbon, transhipment and metabolism in itself, and the conversion of rhizosphere microorganism and metabolism to the present invention for laying successively.

Description

The device and method of petroleum hydrocarbon contaminated soil is repaired using garden waste
Technical field
Utilized the present invention relates to disposition of solid waste and field is repaired in soil pollution, more particularly to a kind of profit The device and method of petroleum hydrocarbon contaminated soil is repaired with garden waste.
Background technology
It is former that the oil spilling occurred in the exploitation of oil, storage, transport, refining and process and leakage can produce landing Oil, soil is caused seriously to pollute.In the restorative procedure of petroleum hydrocarbon contaminated soil, phytoremediation is easy to operate, small investment, beautification Environment and non-secondary pollution.Plant itself can be absorbed to pollutant, be converted, is enriched with, fixed and passivation, and can promote root The degraded of border microbe.Research shows, similar to addition external source oil degradation bacteria, and adding appropriate conditioner stimulates Indigenous microorganism can significantly promote the degraded of petroleum hydrocarbon, and conditioner is mostly vermiculite, turf, straw, wood chip, stalk etc..Lawn After growth and maturity, caused grass cuttings processing and a great problem are cradled or pull out repeatedly, by the discarded grass cuttings heap after collection Fertilizer, it is converted into organic fertilizer and be back to use as modifying agent in petroleum hydrocarbon contaminated soil, recycled.
In disclosed patent, the patent pole of petroleum hydrocarbon contaminated soil is repaired using garden waste and lawn plant combination It is few, typically repaired using plants such as Bermuda grass, Festuca Arundinacea, rye grass, sudangrasses, plant refuse is taken as rubbish and lost Abandon, not only cause the wasting of resources also to have environmental risk.
The content of the invention
The present invention proposes a kind of device and method that petroleum hydrocarbon contaminated soil is repaired using garden waste, utilizes different plants Thing discarded object lays a kind of layer structure with air permeability successively, while utilizes the lawn plant suction to soil petroleum hydrocarbon in itself Receive, transport and be metabolized, and the conversion of rhizosphere microorganism and metabolism repair petroleum hydrocarbon contaminated soil.
The technical proposal of the invention is realized in this way:
It is a kind of using garden waste repair petroleum hydrocarbon contaminated soil device, including by PVC perforated plates 14 be bottom plate, PVC board 13 is the processing unit of four cycle side plates, the gravel layer 1 laid successively from the bottom to top in the processing unit, sponge gourd network layers 2nd, tree trimming layer 3, grass cuttings layer 4, cinder layer 5, nonwoven layer 6 and mixed layer 7, the seeding lawn plant 8 of mixed layer 7, lead to Air-dried pipe 15 is arranged in gravel layer 1 and air inlet end is provided with blower fan 16, and the main vent 15 is provided with some branch vents 10, the branch vent 10 sequentially passes through gravel layer 1, sponge gourd network layers 2, tree trimming layer 3, grass cuttings layer 4, cinder layer 5, non-woven fabrics Layer 6 and mixed layer 7, the branch vent 10 are provided with some air vents 11, and the branch vent 10 is provided with air vent 11 Non-woven fabrics 12 is wrapped up in position, and the air outlet of the branch vent 10 is equipped with sealing-plug 9.
Preferably, the mixed layer be oil-contaminated soil, grass cuttings composting production, length be 1-3cm bulk discarded plant wood chips In mass ratio 1:0.1:The mixture of 0.1 composition.
Preferably, the lawn plant 8 is at least one of Bermuda grass, Festuca Arundinacea, sudangrass, rye grass, and seed is broadcast Metric density 10-20g/m2
Preferably, the laying depth of gravel layer 1 is 15-20cm, sponge gourd network layers 2, tree trimming nitride layer 3, grass cuttings layer 4, The laying depth of cinder layer 5 is 5-15cm.
Preferably, the aperture of the perforation on the PVC perforated plates 14 is 3-5cm.
A kind of method for repairing petroleum hydrocarbon contaminated soil, comprises the following steps:
(1) vegetable seeds is planted in mixed layer 7 of the concentration not higher than 4% in sowing season and carries out labor management, it is fixed Phase watering makes soil moisture content be maintained at 30-40%;
(2) when lawn plant 8 grows to maturity period or florescence, cut off and collect grass cuttings, not accumulate during grass cuttings compost It is overstocked, loosely-packed, fully contacted with air, add EM bacteria agent, keep water content in 50%-60%;
(3) offering oxygen way being combined using discontinuous forced-ventilation and gravity-flow ventilation:Blower fan 16 is opened, closes sealing Plug 9, at this moment supplied oxygen for forced ventilation;Blower fan 16 is closed, opens sealing-plug 9, is now supplied oxygen for gravity-flow ventilation;Pass through 3-5h daily Forced ventilation oxygen supply after, carry out gravity-flow ventilation oxygen supply;
(3) compost is after about 40-60 days, and the oil hydrocarbon content in results of regular determination soil is up to the oil hydrocarbon content in soil Reach standard of soil environment quality.
Preferably, in step (3), using serpentine cloth point sampling, the distribution of sampled point is uniform, and each sampled point takes Native depth and sampling quantity answer uniformity, and a mixed soil sample is to take 1kg;GC-MASS or infrared spectroscopy are used after air-drying grinding Total petroleum hydrocarbons content in photometry measure soil, obtains the clearance of total petroleum hydrocarbon in soil.
Had the beneficial effect that caused by the present invention:The present invention lays one kind successively using different plant refuses has air permeability Layer structure, while utilize the lawn plant absorption to soil petroleum hydrocarbon, transhipment and metabolism in itself, and rhizosphere microorganism Conversion and metabolism repair petroleum hydrocarbon contaminated soil.Later stage lawn aerial part cut off after grass cuttings by quickly concentrating on the spot Compost, it is decomposed after product be added to as modifying agent in former contaminated soil, promote plant and microorganism growth, strengthen repair make With so circulation, until soil oil hydrocarbon content reaches environmental quality standards.Because plant rhizosphere secretion promotes microorganism pair Petroleum hydrocarbon degradation is only repair principal element, and the amount of simple plant absorption petroleum hydrocarbon is minimum, therefore later stage harvested grass Only exist micro petroleum hydrocarbon residue in the discarded object of level ground, composting process also can further degrade this part petroleum hydrocarbon residual.This hair The material of bright use is cheap and easy to get, with tearing open with dress, not remove only soil petrochina hydrocarbon, and the grass cuttings collected can pass through harvesting Compost reuse on the spot afterwards, it is added to after harmless treatment as modifying agent in soil, garden plant waste can be made according to classification For the layer structure of ventilating layer, waste resource can be fully used.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the diagrammatic cross-section of apparatus of the present invention.
Fig. 2 is the schematic diagram of the branch vent of the present invention.
Fig. 3 is the plan of apparatus of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its His embodiment, belongs to the scope of protection of the invention.
A kind of device that petroleum hydrocarbon contaminated soil is repaired using garden waste as Figure 1-3, including by PVC perforated plates The processing unit that 14 be bottom plate, PVC board 13 is four cycle side plates, the gravel layer 1 laid successively from the bottom to top in the processing unit, Sponge gourd network layers 2, tree trimming layer 3, grass cuttings layer 4, cinder layer 5, nonwoven layer 6 and mixed layer 7, the seeding lawn of mixed layer 7 Plant 8, main vent 15 is arranged in gravel layer 1 and air inlet end is provided with blower fan 16, and the main vent 15 is provided with some Branch vent 10, the branch vent 10 sequentially pass through gravel layer 1, sponge gourd network layers 2, tree trimming layer 3, grass cuttings layer 4, cinder layer 5th, nonwoven layer 6 and mixed layer 7, the branch vent 10 are provided with some air vents 11, and the branch vent 10 is provided with logical The position parcel non-woven fabrics 12 of air holes 11, the air outlet of the branch vent 10 are equipped with sealing-plug 9.
In the present embodiment mixed layer 7 be oil-contaminated soil, grass cuttings composting production, length be 1-3cm bulk waste plant wood chips In mass ratio 1:0.1:The mixture of 0.1 composition;The lawn plant 8 is in Bermuda grass, Festuca Arundinacea, sudangrass, rye grass At least one, seed broadcast metric density 10-20g/m2;The laying depth of gravel layer 1 is 15-20cm, and sponge gourd network layers 2, trees are repaiied It is 5-15cm to cut nitride layer 3, grass cuttings layer 4, the laying depth of cinder layer 5;The aperture of perforation on the PVC perforated plates 14 is 3-5cm.
In the present apparatus to it is lower and on each layer structure porosity successively decrease successively, this draft type and structure ensure that interior The uniformity of portion's ventilation oxygen supply.Daily after 3-5h forced ventilation, gravity-flow ventilation is carried out.To it is lower and on each layer structure Porosity is successively decreased successively, and this draft type ensure that the uniformity of the inner ventilation of mixed layer 7 oxygen supply.It is strong by certain time After system ventilation, gravity-flow ventilation is carried out by bottom ventilation layer and ventilation duct 7 simultaneously, by 40-60 days, the gradual decomposed, face of mixed layer 7 Discoloration is light, soft, promotes lawn plant growth, significantly shortens repairing efficiency.
A kind of method for repairing petroleum hydrocarbon contaminated soil, comprises the following steps:
(1) vegetable seeds is planted in mixed layer 7 of the concentration not higher than 4% in sowing season and carries out labor management, it is fixed Phase watering makes soil moisture content be maintained at 30-40%;
(2) when lawn plant 8 grows to maturity period or florescence, cut off and collect grass cuttings, not accumulate during grass cuttings compost It is overstocked, loosely-packed, fully contacted with air, add EM bacteria agent, keep water content in 50%-60%;
(3) offering oxygen way being combined using discontinuous forced-ventilation and gravity-flow ventilation:Blower fan 16 is opened, closes sealing Plug 9, at this moment supplied oxygen for forced ventilation;Blower fan 16 is closed, opens sealing-plug 9, is now supplied oxygen for gravity-flow ventilation;Pass through 3-5h daily Forced ventilation oxygen supply after, carry out gravity-flow ventilation oxygen supply;
(3) compost is after about 40-60 days, and the oil hydrocarbon content in results of regular determination soil is up to the oil hydrocarbon content in soil Reach standard of soil environment quality.
Step (3) compost is after about 40-60 days, pH8.49, EC1.24mS/cm, organic matter 804.11g/kg, total nitrogen 2.58g/kg, total phosphorus 0.71g/kg, total potassium 1.23g/kg etc., indices show decomposed, formation composting production;Using Serpentine cloth point sampling, the distribution of sampled point is uniform, each sampled point fetch earth depth and sampling quantity answers uniformity, one Mixed soil sample is to take 1kg;Total petroleum hydrocarbons content in GC-MASS or infrared spectrophotometric determination soil is used after air-drying grinding, Obtain the clearance of total petroleum hydrocarbon in soil.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.

Claims (7)

1. a kind of device that petroleum hydrocarbon contaminated soil is repaired using garden waste, it is characterised in that including by PVC perforated plates (14) it is bottom plate, the processing unit that PVC board (13) is four cycle side plates, the gravel laid successively from the bottom to top in the processing unit Layer (1), sponge gourd network layers (2), tree trimming layer (3), grass cuttings layer (4), cinder layer (5), nonwoven layer (6) and mixed layer (7), institute Mixed layer (7) seeding lawn plant (8) is stated, main vent (15) is arranged in gravel layer (1) and air inlet end is provided with blower fan (16), the main vent (15) is provided with some branch vents (10), and the branch vent (10) sequentially passes through gravel layer (1), sponge gourd network layers (2), tree trimming layer (3), grass cuttings layer (4), cinder layer (5), nonwoven layer (6) and mixed layer (7), it is described Branch vent (10) is provided with some air vents (11), and the branch vent (10) is provided with the position parcel nothing of air vent (11) Cloth (12) is spun, the air outlet of the branch vent (10) is equipped with sealing-plug (9).
2. the device of petroleum hydrocarbon contaminated soil is repaired using garden waste as claimed in claim 1, it is characterised in that described Mixed layer (7) is oil-contaminated soil, grass cuttings composting production, length are 1-3cm bulk discarded plants wood chip in mass ratio 1:0.1:0.1 The mixture of composition.
3. the device of petroleum hydrocarbon contaminated soil is repaired using garden waste as claimed in claim 1, it is characterised in that described Lawn plant (8) is at least one of Bermuda grass, Festuca Arundinacea, sudangrass, rye grass, and seed broadcasts metric density 10-20g/m2
4. the device of petroleum hydrocarbon contaminated soil is repaired using garden waste as claimed in claim 1, it is characterised in that described Gravel layer (1) laying depth is 15-20cm, and sponge gourd network layers (2), tree trimming nitride layer (3), grass cuttings layer (4), cinder layer (5) are spread If thickness is 5-15cm.
5. the device of petroleum hydrocarbon contaminated soil is repaired using garden waste as claimed in claim 1, it is characterised in that described The aperture of perforation on PVC perforated plates (14) is 3-5cm.
6. a kind of method that device using described in claim any one of 1-5 repairs petroleum hydrocarbon contaminated soil, it is characterised in that Comprise the following steps:
(1) vegetable seeds is planted in mixed layer (7) of the petroleum hydrocarbon concentration not higher than 4% in sowing season and manually managed Reason, periodically watering make soil moisture content be maintained at 30-40%;
(2) when lawn plant (8) grows to maturity period or florescence, cut off and collect grass cuttings, not accumulate during grass cuttings compost It is close, loosely-packed, fully contacted with air, add EM bacteria agent, keep water content in 50%-60%;
(3) offering oxygen way being combined using discontinuous forced-ventilation and gravity-flow ventilation:Blower fan (16) is opened, closes sealing-plug (9), at this moment supplied oxygen for forced ventilation;Blower fan (16) is closed, opens sealing-plug (9), is now supplied oxygen for gravity-flow ventilation;Pass through daily After 3-5h forced ventilation oxygen supply, gravity-flow ventilation oxygen supply is carried out;
(3) compost is after about 40-60 days, and the oil hydrocarbon content in results of regular determination soil is until the oil hydrocarbon content in soil reaches Standard of soil environment quality.
7. a kind of method for repairing petroleum hydrocarbon contaminated soil as claimed in claim 6, it is characterised in that in step (3), use Serpentine cloth point sampling, the distribution of sampled point is uniform, each sampled point fetch earth depth and sampling quantity answers uniformity, one Mixed soil sample is to take 1kg;Total petroleum hydrocarbons content in GC-MASS or infrared spectrophotometric determination soil is used after air-drying grinding, Obtain the clearance of total petroleum hydrocarbon in soil.
CN201710813265.7A 2017-09-11 2017-09-11 The device and method of petroleum hydrocarbon contaminated soil is repaired using garden waste Pending CN107350280A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108246791A (en) * 2018-03-13 2018-07-06 中国地质大学(武汉) A kind of petroleum hydrocarbon contaminated soil renovation technique
CN112317532A (en) * 2020-11-03 2021-02-05 北辰(上海)环境科技有限公司 Biological pile for repairing petroleum hydrocarbon polluted soil

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101234392A (en) * 2008-02-29 2008-08-06 中国海洋大学 Device and method for biologically repairing high concentration petroleum pollution soil
CN101890426A (en) * 2010-07-19 2010-11-24 南开大学 Method for restoring petroleum-polluted saline alkali soil by ryegrass and high efficiency microbes
CN106077077A (en) * 2016-08-06 2016-11-09 天津市滨海新区聚荣科技有限公司 The biological restoration apparatus and method of high concentration petroleum pollution soil

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101234392A (en) * 2008-02-29 2008-08-06 中国海洋大学 Device and method for biologically repairing high concentration petroleum pollution soil
CN101890426A (en) * 2010-07-19 2010-11-24 南开大学 Method for restoring petroleum-polluted saline alkali soil by ryegrass and high efficiency microbes
CN106077077A (en) * 2016-08-06 2016-11-09 天津市滨海新区聚荣科技有限公司 The biological restoration apparatus and method of high concentration petroleum pollution soil

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108246791A (en) * 2018-03-13 2018-07-06 中国地质大学(武汉) A kind of petroleum hydrocarbon contaminated soil renovation technique
CN112317532A (en) * 2020-11-03 2021-02-05 北辰(上海)环境科技有限公司 Biological pile for repairing petroleum hydrocarbon polluted soil

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