CN208928851U - A kind of restoration of the ecosystem structure of petroleum hydrocarbon-heavy-metal composite pollution mud - Google Patents
A kind of restoration of the ecosystem structure of petroleum hydrocarbon-heavy-metal composite pollution mud Download PDFInfo
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Abstract
The utility model discloses a kind of petroleum hydrocarbon-heavy-metal composite pollution mud restoration of the ecosystem structures, the structure includes earth's surface impervious barrier, earthwork heap builds massif, vegetable layer and miniature wetland, earthwork heap is built massif and is formed by multilayer reparation soil layer and multilayer drainage blanket alternating landfill, earthwork heap is built massif heap and is built on earth's surface impervious barrier, the lowest level that earthwork heap builds massif is drainage blanket, earthwork heap builds the top layer of massif to repair soil layer, vegetable layer plantation is built on massif surface layer in earthwork heap, it is uniformly distributed in each reparation soil layer to have multiple permeable structures, multiple permeable structures are arranged between soil layer and the drainage blanket of bottom in each repair, lowest level drainage blanket edge is surrounded with seugh, seugh is connect by connecting underdrain with miniature wetland.The reparation structure is simple, vdiverse in function, can repair to petroleum hydrocarbon-heavy-metal composite pollution mud, easy to operate, repairing effect is good.
Description
Technical field
The utility model relates to environmental ecology reparation and waste resource utilization technology fields, and in particular to a kind of petroleum
Hydrocarbon-heavy-metal composite pollution mud restoration of the ecosystem structure.
Background technique
Bed mud is one of the important component of river channel ecology system, is not only the important ring of Cycle of nutrients in river
The important accumulation of section and pollutant.With the extensive expansion of China's water conservancy and water environment treatment engineering, can all produce every year
Raw a large amount of Dredged bed mud.Since Dredged bed mud mud amount is big, moisture content is high, constituent is complicated, arbitrarily accumulation not only influences scape
It sees, it is also possible to generate secondary pollution, environment and human health are adversely affected.And the organic matter contained in Dredged bed mud and
Nutritional ingredient needed for plant is valuable living resources, and therefore, for the Dredged bed mud of different contamination characteristics, research is different
Biological renovation method and utilization ways, can effectively realize the innoxious and recycling of Dredged bed mud.
Common process for treating sludge mainly has stockyard processing, curing process etc. in country's dredging waterway at present, wherein solid
Change processing technique to stablize pollutant in solidified body by physics chemical actions such as closing, precipitating, absorption, to reach quick
Improve bed mud physical property and reduces the purpose that pollutant is discharged and migrated again.In fact, in engineering practice, depositing tighter
The channel cleanout amount of weight is big, and sludge dewatering and solidifying cost is excessively high；On the other hand, in curing sludge, pollutant is not gone out generally
It goes, but is wrapped and can not be penetrated into environment, the elimination of pollutant is not implemented, there are certain environmental risks.How
The removal problem that pollutant in resource-effective and curing sludge is comprehensively considered in polluted sludge treatment process, is always people
The bottleneck that solving the problems, such as striving direction.
It is worth noting that, although mud physical and chemical condition after curing process is varied widely, micro- life
Object still has certain activity.Microorganism obtains energy by degradation organic matter, the inorganic acid and have that metabolism generates
Machine acid has decomposition to the hydrated product generated in solidification process.Thus explanation passes through biostimulation and biological reinforced work
With can effectively improve the bioavailability of pollutant in curing sludge.In addition, also containing various beneficial in lake dredging bottom-mud
Ingredient, including humus and the higher Available N-P of content can be used as planting technique soil and carry out resource utilization.This is to utilize plant
Object-microbial association repair it is cured treated heavy metal-petroleum hydrocarbon combined pollution mud provides one it is effective and feasible
Technology path.
In recent years, microbial augmentation recovery technique and phytoremediation technology are more and more applied to petroleum hydrocarbon or a huge sum of money
Belong in contaminated soil remediation, the plant combined recovery technique of microorganism-is to be made using plant in environment to the promotion that microorganism grows
With significantly improving microorganism to the degradation rate of petroleum pollution.Heavy metal pollution is generally existing in oil-polluted soils, a huge sum of money
Category will affect the biological prosthetic effect of microorganism-plant in the soil to the toxic action of microorganism.Therefore, microorganism-plant
Cooperate with restoration of petroleum-heavy metal mud reparation is to eliminate polluter in mud, restores ecosystem in mud
The important method for structure of uniting.
Summary of the invention
Based on the above-mentioned prior art, the utility model provides a kind of ecology of petroleum hydrocarbon-heavy-metal composite pollution mud
Structure and its construction method and restorative procedure are repaired, the reparation structure is simple, and construction cost is low, and it is vdiverse in function, it is easy to operate, it is right
Petroleum hydrocarbon-heavy-metal composite pollution mud repairing effect is good.
Realize technical solution used by the utility model above-mentioned purpose are as follows:
A kind of restoration of the ecosystem landscape heap building structure of petroleum hydrocarbon-heavy-metal composite pollution mud, including earth's surface impervious barrier, soil
Square heap builds massif, vegetable layer and miniature wetland, and earthwork heap is built massif and is made of multilayer reparation soil layer and drainage blanket, and repairs soil layer
Replacing landfill with drainage blanket, earthwork heap is built massif heap and is built on earth's surface impervious barrier, and the lowest level that earthwork heap builds massif is drainage blanket,
Earthwork heap builds the top layer of massif to repair soil layer, and vegetable layer plantation is built on massif surface layer in earthwork heap, in each reparation soil layer
Even to be laid with multiple permeable structures, permeable structure includes the porous permeable blind pipe A vertically laid, it is each repair in soil layer more than more
The upper port of hole Permeable blind pipe A is located at the corresponding middle position for repairing soil layer surface layer, and each more repaired in soil layer are porous
The upper port of Permeable blind pipe A is communicated with the atmosphere, and each lower end for repairing more porous permeable blind pipe A in soil layer is located at corresponding
It repairs at the top of the drainage blanket of the adjacent lower section of soil layer, is vertically uniformly embedded in bottom and intermediate each reparation soil layer multiple
Depressed structure A, drainage blanket of each top for repairing multiple ventilating structure A in soil layer with corresponding reparation soil layer adjacent and above
Edge connection, each bottom for repairing multiple ventilating structure A in soil layer are located on the drainage blanket top of bottom, and the top is repaired
Earth backing layer center upright is embedded with ventilating structure B, and the top of ventilating structure B is located at the reparation soil layer surface layer center of the top, thoroughly
On the bottom of depressed structure B is located at the top of the drainage blanket of bottom, the top of ventilating structure B is communicated with the atmosphere, lowest level draining
Layer edge is surrounded with seugh, and seugh is obliquely installed, and the lowest part of seugh is equipped with connection underdrain, connection
One end of underdrain is connect with seugh lowest part, and the other end is connect with miniature wetland entrance.
The drainage blanket is made of lower support pervious bed and top geotextile layer, and upper layer geotextile layer is laid on lower part
It supports on pervious bed, drainage blanket is with a thickness of 30-50cm.
The reparation soil layer resulting mud Modified soil after dehydration by petroleum hydrocarbon-heavy-metal composite pollution mud
Landfill forms, and reparation the thickness of the layer is 1.5-3m.
The height that the earthwork heap builds massif is no more than 20m.
The permeable structure further includes internal geotextile layer, metalling and external geotextile layer, internal geotextile layer packet
It is rolled on porous permeable blind pipe A, metalling is wrapped in internal geotextile layer, and external geotextile layer is wrapped on metalling, respectively
Repairing the circumferential distance between adjacent two permeable structure in soil layer is 10-30m.
The ventilating structure A includes columned steel mesh cage A, and the center steel mesh cage A is equipped with porous gas-guide tube A, more
The fixed center with steel mesh cage A both ends of the surface, steel mesh cage A inner surface are equipped with geotextiles, steel respectively at the both ends of hole gas-guide tube A
Rubble is filled between metal wire mesh cage A and porous gas-guide tube A, ventilating structure B includes columned steel mesh cage B, in steel mesh cage B
Centre is equipped with porous gas-guide tube B, and the center with steel mesh cage B both ends of the surface, steel mesh cage B are fixed in the both ends of porous gas-guide tube B respectively
Inner surface is equipped with geotextiles, is filled with rubble between steel mesh cage B and porous gas-guide tube B, porous gas-guide tube B and each porous leads
Tracheae A is communicated with the atmosphere, and the circumferential distance between each adjacent two ventilating structures A repaired in soil layer is 10-30m, each to repair
Ventilating structure A and permeable structure in soil layer are interspersed.
Porous permeable blind pipe B is laid in the seugh, porous permeable blind pipe B is wrapped with rubble.
Miniature wetland exit is equipped with overflow port, and overflow port exit is connected with drainpipe.
Compared with prior art, the beneficial effects of the utility model and advantage are:
1, the utility model has the feature of similar soil based on mud Modified soil, is making full use of existing N P and K fertility
On the basis of, being properly added auxiliary material improves the cultivated plant such as the soil texture, is built, planting technique and is added by landscape massif heap
The mode of microbial inoculum realizes that polluted bed mud, to the fundamental shifts of soil, restores the natural ecology of mud Modified soil from mud.
2, the utility model can accelerate the degradation of unrecovered oil hydrocarbon in mud Modified soil by the effect of microorganism and plant,
Promote plant to adsorb bioavailable heavy metal, on the basis of curing/stabilizing, by remaining petroleum hydrocarbon and heavy metal into
One step is eliminated, is reduced, and realizes polluted bed mud-thorough ecological recovery of mud Modified soil-natural soils.
3, the reparation structure of the utility model is embedded with the ventilative and dosing knot of the formation such as permeable structure, porous breathable cage
Structure breathes freely and cooperates with dosing structure and drainage blanket, so that it is obvious to repair the aeration of soil layer, water penetration and water conservation
It is modified.
4, the reparation structure of the utility model is simple, is constructed, is applied by raw material such as mud Modified soil, rubble ,/brick slags
Work is convenient, and construction cost is low, not only bacteria agent can be used to carry out the reparation of sludge modification soil, but also can be used as urban landscape mountain
Body is achieved many things at one stroke.
5, the restorative procedure of the utility model is simple, on repairing structure basis, is used cooperatively bacteria agent and nutrient solution,
Easy to operate, repairing effect is good.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of petroleum hydrocarbon-heavy-metal composite pollution mud restoration of the ecosystem landscape heap building structure.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the structural schematic diagram of seugh.
Fig. 4 is the structural schematic diagram of permeable structure.
Fig. 5 is the structural schematic diagram of ventilating structure A.
Wherein, 1- repairs soil layer, 2- drainage blanket, 3- earth's surface impervious barrier, 4- vegetable layer, 5- permeable structure, 6- ventilating structure
A, the miniature wetland of 7- seugh, 8-, 9- overflow port, 10- drainpipe, 11- ventilating structure B, 12- porous permeable blind pipe A, 13-
Porous permeable blind pipe B, 15- connection underdrain, geotextile layer inside 16-, 17- metalling, geotextile layer outside 18-, 19- is porous leads
Tracheae A, 20- steel mesh cage A.
Specific embodiment
The petroleum hydrocarbon of the utility model-heavy-metal composite pollution mud restoration of the ecosystem landscape heap is built with reference to the accompanying drawing
The structure of structure is illustrated.
Structure such as Fig. 1 and Fig. 2 institute of the petroleum hydrocarbon of the utility model-heavy-metal composite pollution mud restoration of the ecosystem structure
Show, including earth's surface impervious barrier 3, earthwork heap build massif, vegetable layer 4 and miniature wetland.
The earthwork heap is built massif and is made of three layers of reparation soil layer 1 and three layers of drainage blanket 2, and repairs soil layer 1 and draining
Layer 2 replaces landfill.Earthwork heap is built massif heap and is built on earth's surface impervious barrier, and the lowest level that earthwork heap builds massif is drainage blanket 2, the earthwork
Heap builds the top layer of massif to repair soil layer 1.
The drainage blanket 2 is made of lower support pervious bed and top geotextile layer, and top geotextile layer is laid on down
Portion supports on pervious bed, and geotextiles use 200g/m2High-intensitive Polypropylene, drainage blanket 2 is with a thickness of 40cm.The reparation soil layer
1 by petroleum hydrocarbon-heavy-metal composite pollution mud, resulting mud Modified soil landfill is formed after dehydration, repairs soil layer 1
With a thickness of 2m, the height that earthwork heap builds massif is 7.2m.
It is uniformly distributed in each reparation soil layer to have multiple permeable structures 5, as shown in figure 4, permeable structure 5 includes vertically laying
Porous permeable blind pipe A12, internal geotextile layer 16, metalling 17 and external geotextile layer 18, internal geotextile layer 16 are wrapped in
Diameter is on the porous permeable blind pipe A12 (such as plastic blind-ditch) of 150mm, and metalling 17 is wrapped in internal geotextile layer 16, outside
Portion's geotextile layer 18 is wrapped on the metalling 17 with a thickness of 150mm.Between each adjacent two permeable structure 5 repaired in soil layer 1
Circumferential distance be 20m.Each upper port for repairing more porous permeable blind pipe A12 in soil layer 1 is located at corresponding reparation soil
The middle position on 1 surface layer of layer, each upper port for repairing more porous permeable blind pipe A12 in soil layer 1 is communicated with the atmosphere, and respectively repairs
The upper end of more porous permeable pipes in earth backing layer is located on same contour, and each more porous permeables repaired in soil layer 1 are blind
The lower end of pipe A12 is located on corresponding 2 top of drainage blanket for repairing the adjacent lower section of soil layer 1.
Multiple ventilating structure A6, adjacent two ventilating structure are vertically uniformly embedded in bottom and intermediate reparation soil layer 1
Circumferential distance between A6 is 20m.As shown in figure 5, ventilating structure A6 includes columned steel mesh cage A20, steel mesh cage A20
Diameter be 1000mm.The center steel mesh cage A20 is equipped with the porous gas-guide tube A19 (HDPE perforation gas-guide tube) that diameter is 200mm,
The fixed center with 20 both ends of the surface of steel mesh cage, steel mesh cage A inner surface are equipped with geotechnique respectively at the both ends of porous gas-guide tube A19
Cloth fills the right rubble having a size of 40mm between steel mesh cage A20 and porous gas-guide tube A19.The top of each ventilating structure A6 with
Intermediate drainage blanket edge is connected to, on underlying 2 top of drainage blanket in the bottom of each porous permeable cage A6.
The reparation soil layer center upright of the top is embedded with ventilating structure B11, and ventilating structure B11 includes columned steel wire
The diameter of cylinder mould B, steel mesh cage B are 1000mm.The center steel mesh cage B is equipped with the porous gas-guide tube B (HDPE that diameter is 200mm
Perforation gas-guide tube), the center with steel mesh cage B both ends of the surface, steel mesh cage B inner surface are fixed in the both ends of porous gas-guide tube B respectively
Geotextiles are equipped with, the right rubble having a size of 40mm is filled between steel mesh cage B and porous gas-guide tube B.The top of ventilating structure B
The reparation soil layer surface layer being located above is central, and the porous gas-guide tube in ventilating structure B is communicated with the atmosphere, the bottom of ventilating structure B
On at the top of underlying drainage blanket.
The drainage blanket edge of lower section is surrounded with seugh 7, and seugh 7 is obliquely installed, the gradient of seugh 7
It is 1.5 ‰.As shown in figure 3, being laid with porous permeable blind pipe B13 in seugh 7, porous permeable blind pipe B13 is wrapped with broken
Stone.The lowest part of seugh 7 is equipped with connection underdrain 15, is equipped with connecting tube, one end of connecting tube and more in connection underdrain 15
The lowest part of hole Permeable blind pipe B13 connects, and the other end of connecting tube is connect with the entrance of miniature wetland 8.
Miniature 8 exit of wetland is equipped with overflow port 9, is connected with drainpipe 10 at overflow port 9.Miniature 8 exit of wetland is set
There is overflow port to control wetland water level or the extra rainwater of discharge.
The construction method of above-mentioned petroleum hydrocarbon-heavy-metal composite pollution mud restoration of the ecosystem structure is as follows:
1, it will be stacked at draining in cofferdam after the petroleum hydrocarbon in certain city river-heavy-metal composite pollution dredging silt, then
Dehydration modification, curing/stabilizing petroleum hydrocarbon therein and heavy metal are carried out, dehydration can be modified using HAS mud
Agent carries out solidification dehydration to mud, referring in particular to " the in-situ modified curing sludge soft soil construction engineering method of HAS sludge modifier ", wait drip
When water to its moisture content is reduced to 70% or less, the HAS sludge modifier progress for adding 4-8% is cured modified；It can also use
The dewatering machines such as plate filter press are carried out dehydrating, referring in particular to " mud mechanical dehydration chemical modification integrated construction side
Method ", obtain the mud Modified soil that moisture content is 35-50%, to the pollutants leaching concentrations such as heavy metal in mud Modified soil into
Row detection, meets " hazardous waste judging standard leaching characteristic identification standard " (GB5085.3-1996) and " surface water environment quality
Standard " mud of (GB 3838) III class water standard can be considered as up to standard, next step heap can be carried out and build reparation, otherwise again into
Row dehydration modification；
2, the geological condition for treating mound design region is investigated, and is inquired and is surveyed report to the ground in mound design region, to mound design region
It is followed successively by plain fill, clay and middle weathering argillaceous siltstoue, foundation bearing capacity 100Kpa, upper layer plain fill layer from top to bottom
Infiltration coefficient be 0.6 × 10-7Cm/s is natural earth's surface impervious barrier；
3, the topsoil to mound design region is removed and is flattened, on it with the rubble/brick generated after cofferdam demolition
Slag is laid with lower support pervious bed, then one layer of geotextiles are covered on lower support pervious bed, forms top geotextile layer, most lower
The drainage blanket of side, which is constructed, to be completed；
4, the reparation soil layer of mud Modified soil landfill bottom is used on the drainage blanket of bottom, then repairing in bottom
It is laid with intermediate row water layer on earth backing layer, then repairs soil layer among landfill on intermediate drainage blanket, followed by intermediate reparation
The drainage blanket of the top is laid on soil layer, the reparation soil layer of landfill the top on the drainage blanket of the top repairs soil in landfill
Layer repairs soil layer and is layered landfill from bottom to top, each layering with a thickness of 50cm, settling amount is no more than the 3% of lift height, control
It is 74% that system, which repairs soil layer compactness, and porosity forms earthwork heap and build massif after 60%, landfill, while to formation
Earthwork heap is built massif and is modified, and controlling maximum grade of side slope is 28 °.Ventilative knot is buried while earthwork heap builds massif landfill
Ventilating structure A is due to highly higher in structure B and multiple ventilating structure A, ventilating structure B and intermediate reparation soil layer, using segmentation
Inbuilt method is buried.It is preparatory on the drainage blanket of bottom according to construction drawing after the completion of the drainage blanket construction of bottom
The diameter of placement casing B and multiple sleeve As, casing B and multiple sleeve As is 1300mm, is buried in outermost sleeve A most lower
The ventilating structure A of side repaired in soil layer buries the lower segment of remaining ventilating structure A in remaining sleeve A, buries in casing B
All sleeve As and casing B are extracted, most after the completion of the reparation soil layer landfill of bottom the segment of ventilating structure bottom
The ventilating structure A of lower section repaired in soil layer is embedded to be completed, after the completion of intermediate drainage blanket construction, in the drainage blanket of middle layer
It is upper to place casing B and multiple sleeve As in advance, the interstitial segment of ventilating structure B is buried in casing B, buries intermediate repair in sleeve A
All sleeve As and casing B are extracted after the completion of intermediate reparation soil layer landfill in the upper segment of multiple ventilating structure A, in
Between the ventilating structure A repaired in soil layer it is embedded complete, the drainage blanket after the completion of construction of the drainage blanket of the top, in the top
It is upper to place casing B in advance, the upper segment of ventilating structure B is buried in casing B, after the completion of the reparation soil layer landfill of the top,
Casing B is extracted, ventilating structure B is embedded to be completed；
5, after the completion of each layer of reparation soil layer heap is built, soil layer surface layer middle position excavation 1m depth is being repaired according to construction drawing
Heatable adobe sleeping platform, the DN350 steel drum of fixed 1m long, steel drum surrounding and bottom package geotextiles are placed in each heatable adobe sleeping platform, later in steel drum
The porous blind pipe of DN150 for wrapping geotextiles is placed at center, fills metalling after fixed, is then carried out the earthwork in gap and is returned
It fills out, then takes out steel drum；
6, according to bibliography " agricultural drain Processing System Design and realization based on small-sized wetland " building 18m2It is micro-
Type wetland sets overflow port in miniature wetland exit, sets drainpipe in overflow port exit, miniature wetland plants 2m2Iris,
2.5m2Arundo donax, 1.5m2Canna, 1.2m2Floral leaf cattail；
7, the seugh for being 1.5 ‰ around the laying gradient in the drainage blanket edge of bottom, in seugh
It is laid with porous permeable blind pipe B (such as plastic blind-ditch), rubble is filled in porous permeable blind pipe B surrounding, in the lowest part of seugh
Connection underdrain is excavated, lays connecting tube in connection underdrain, the lowest part of one end of connecting tube and porous permeable blind pipe B are connected
It connects, the other end of connecting tube is connect with the entrance of miniature wetland；
8, plantation rye grass, alfalfa, local interspersing Ligustrum quihoui and cinnamomum camphora on massif surface layer are built in earthwork heap, makes to plant
Ground cover plant, shrub and the arbor of plant form vegetable layer, when planting cinnamomum camphora, cinnamomum camphora are added in cinnamomum camphora planting soil and plants soil property
The agriculture and forestry organic waste material of amount 5%, agriculture and forestry organic waste material are sawdust and/or mushroom slag etc., at the same by cinnamomum camphora root system uniformly pre-buried 3 it is ventilative
Blind pipe.
After above-mentioned petroleum hydrocarbon-heavy-metal composite pollution mud restoration of the ecosystem landscape heap building structure is constructed, carry out
Repair, specific restorative procedure are as follows:
1, choose containing bacillus megaterium, bacillus licheniformis, bacillus subtilis, colloid bacillus cereus agricultural business
EM liquid bacterial agent (opens rich peasant's industry Science and Technology Ltd.-EM bacterium solution in Zhengzhou), every 2 weeks, by agricultural business EM liquid bacterial agent water
500 times of dilution, obtains biological prosthetic bacterium solution, biological prosthetic bacterium solution is added to by the porous permeable blind pipe A of each permeable structure
Earthwork heap is built in massif, and 120 liters of agricultural business EM liquid bacterial agents are added every time；
2, mud Modified soil pH 7.20, petroleum hydrocarbon content 1200g/kg, organic matter 30.5g/kg, total nitrogen 0.068g/ are measured
Kg, total phosphorus 0.045g/kg, wherein total carbon and total nitrogen content are relatively low, then select sucrose and ammonium nitrate as nutrition medicament,
Every time plus 2 days before biological prosthetic bacterium solution, add water that compounding activation agent is made nutrition medicament, wherein the concentration of sucrose is 10g/L, nitre
Sour ammonium concentration is 0.1g/L, and compounding activation agent is added to a cubic metre of earth heap by the porous permeable blind pipe A of each permeable structure and builds massif
In, 120L nutrition medicament is added every time.
After 90d is repaired, first round plant is gathered in, the mud that detection earthwork heap builds massif surface layer 1m depth or so down changes
Property soil in the content of petroleum hydrocarbon and heavy metal Cd, petroleum hydrocarbon content is reduced to 300mg/L from 1000mg/L, and removal rate reaches
The concentration of 70%, Cd are reduced to 3mg/kg by 5mg/kg, and removal rate is to reach 40%, and the plant of harvesting is sent to biomass power generation
Factory's burning disposal.
Claims (8)
1. a kind of petroleum hydrocarbon-heavy-metal composite pollution mud restoration of the ecosystem structure, including earth's surface impervious barrier, earthwork heap build mountain
Body, vegetable layer and miniature wetland, earthwork heap is built massif and is made of multilayer reparation soil layer and drainage blanket, and repairs soil layer and drainage blanket
Alternately landfill, earthwork heap are built massif heap and are built on earth's surface impervious barrier, and the lowest level that earthwork heap builds massif is drainage blanket, and earthwork heap is built
The top layer of massif is to repair soil layer, and vegetable layer plantation is built on massif surface layer in earthwork heap, uniformly distributed in each reparation soil layer to have
Multiple permeable structures, permeable structure include the porous permeable blind pipe A vertically laid, and each more porous permeables repaired in soil layer are blind
The upper port of pipe A is located at the corresponding middle position for repairing soil layer surface layer, each more porous permeable blind pipe A repaired in soil layer
Upper port be communicated with the atmosphere, each lower end for repairing more porous permeable blind pipe A in soil layer is located at corresponding reparation soil layer
On at the top of the drainage blanket of adjacent lower section, multiple ventilating structure A are uniformly vertically embedded in bottom and intermediate each reparation soil layer,
The edge of drainage blanket of each top for repairing multiple ventilating structure A in soil layer with corresponding reparation soil layer adjacent and above connects
Logical, each bottom for repairing multiple ventilating structure A in soil layer is located on the drainage blanket top of bottom, the reparation soil layer of the top
Center upright is embedded with ventilating structure B, and the top of ventilating structure B is located at the reparation soil layer surface layer center of the top, ventilating structure B
Bottom be located at the top of the drainage blanket of bottom, the top of ventilating structure B is communicated with the atmosphere, lowest level drainage blanket surrounding
Edge is surrounded with seugh, and seugh is obliquely installed, and the lowest part of seugh is equipped with connection underdrain, connects the one of underdrain
End is connect with seugh lowest part, and the other end is connect with miniature wetland entrance.
2. petroleum hydrocarbon according to claim 1-heavy-metal composite pollution mud restoration of the ecosystem structure, it is characterised in that:
The drainage blanket is made of lower support pervious bed and top geotextile layer, and it is permeable that upper layer geotextile layer is laid on lower support
On layer, drainage blanket is with a thickness of 30-50cm.
3. petroleum hydrocarbon according to claim 1-heavy-metal composite pollution mud restoration of the ecosystem structure, it is characterised in that:
The reparation soil layer by petroleum hydrocarbon-heavy-metal composite pollution mud after dehydration resulting mud Modified soil landfill and
At reparation the thickness of the layer is 1.5-3m.
4. petroleum hydrocarbon according to claim 1-heavy-metal composite pollution mud restoration of the ecosystem structure, it is characterised in that:
The height that the earthwork heap builds massif is no more than 20m.
5. petroleum hydrocarbon according to claim 1-heavy-metal composite pollution mud restoration of the ecosystem structure, it is characterised in that:
The permeable structure further includes internal geotextile layer, metalling and external geotextile layer, and internal geotextile layer is wrapped in porous
On Permeable blind pipe A, metalling is wrapped in internal geotextile layer, and external geotextile layer is wrapped on metalling, respectively repairs soil layer
In adjacent two permeable structure between circumferential distance be 10-30m.
6. petroleum hydrocarbon according to claim 1-heavy-metal composite pollution mud restoration of the ecosystem structure, it is characterised in that:
The ventilating structure A includes columned steel mesh cage A, and the center steel mesh cage A is equipped with porous gas-guide tube A, porous gas-guide tube A
The both ends fixed center with steel mesh cage A both ends of the surface respectively, steel mesh cage A inner surface is equipped with geotextiles, steel mesh cage A with
Rubble is filled between porous gas-guide tube A, ventilating structure B includes columned steel mesh cage B, and the center steel mesh cage B is equipped with more
Hole gas-guide tube B, the fixed center with steel mesh cage B both ends of the surface, steel mesh cage B inner surface are spread respectively at the both ends of porous gas-guide tube B
Equipped with geotextiles, rubble is filled between steel mesh cage B and porous gas-guide tube B, porous gas-guide tube B and each porous gas-guide tube A are equal
It is communicated with the atmosphere, the circumferential distance between each adjacent two ventilating structures A repaired in soil layer is 10-30m, each to repair in soil layer
Ventilating structure A and permeable structure are interspersed.
7. petroleum hydrocarbon according to claim 1-heavy-metal composite pollution mud restoration of the ecosystem structure, it is characterised in that:
Porous permeable blind pipe B is laid in the seugh, porous permeable blind pipe B is wrapped with rubble.
8. petroleum hydrocarbon according to claim 1-heavy-metal composite pollution mud restoration of the ecosystem structure, it is characterised in that:
Miniature wetland exit is equipped with overflow port, and overflow port exit is connected with drainpipe.
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| CN113896572A (en) * | 2021-09-08 | 2022-01-07 | 浙江华东工程建设管理有限公司 | Drainage and aeration system suitable for large perishable garbage machine fertilizer forming equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113896572A (en) * | 2021-09-08 | 2022-01-07 | 浙江华东工程建设管理有限公司 | Drainage and aeration system suitable for large perishable garbage machine fertilizer forming equipment |
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