CN211210720U - Perennial enrichment plant blanket suitable for lead-zinc tailings - Google Patents
Perennial enrichment plant blanket suitable for lead-zinc tailings Download PDFInfo
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- CN211210720U CN211210720U CN201921389844.4U CN201921389844U CN211210720U CN 211210720 U CN211210720 U CN 211210720U CN 201921389844 U CN201921389844 U CN 201921389844U CN 211210720 U CN211210720 U CN 211210720U
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Abstract
The utility model discloses a perennial enrichment plant blanket of suitable lead zinc tailing, including numb coconut palm stratum reticulare, sedum belong to lead zinc enrichment plant, root system fixed bed, microbial inoculum layer and microbial adsorption layer, and numb coconut palm stratum reticulare, sedum belong to lead zinc enrichment plant, root system fixed bed, microbial inoculum layer and microbial adsorption layer arrange from top to bottom in proper order to adopt the mounting to be fixed in the soil layer with the plant blanket. Has the advantages that: the plant blanket provided by the application combines technical means such as heavy metal passivation, soil improvement and pioneer plant introduction, and provides conditions for early vegetation recovery and ecological restoration.
Description
Technical Field
The utility model relates to a soil matrix improvement, vegetation recovery technical field, concretely relates to perennial enrichment plant blanket of suitable lead zinc tailing.
Background
The tailing waste land is one of mining waste lands, not only occupies a large amount of land, but also large-area vegetation and landscapes are damaged, so that a large amount of species disappear, the biological diversity is reduced sharply, and the ecological system is degraded. In addition, the tailing sand contains a large amount of toxic and harmful substances, such as heavy metals and the like, which are easy to pollute surrounding soil and water under the action of water erosion, leaching, runoff and the like, and the tailing sand in the tailings is also easy to be eroded by wind to cause dust pollution. Therefore, ecological restoration of the waste areas of the tailings and control of pollution to the surrounding environment become one of the hot spots of current research.
The ecological restoration of the tailing waste land is critical to plant restoration, but the plant planting and growth on the tailing waste land are limited due to the fact that the tailing waste land is high in heavy metal content, low in organic matter content, poor in water retention property and easy to sink caused by the lack of a large number of nutrient elements (such as N and P) and extremely poor in soil structure. Therefore, some researchers propose to adopt artificial auxiliary measures, add modifying agents into tailings, plant tolerant plants and establish a soilless reclamation vegetation recovery technology so as to stabilize a tailings pond, improve landscapes and control pollution. The method has the advantages of low investment, no damage to site structures, no secondary pollution, economy, environmental protection and the like, is a reliable, relatively safe and environment-friendly repair technology, and has good application prospects. However, at present, the technology mostly stays in laboratory research, engineering demonstration is less, most of the super-enriched plants are annual plants, vegetation degradation is easy to occur after the life history is ended, and the enriched heavy metals are released into soil again. Therefore, a set of soil matrix improvement-vegetation recovery technical system available for engineering needs to be researched, and reference and guidance are provided for the ecological recovery engineering of the tailing pond.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a suitable lead zinc tailing's perennial enrichment plant blanket just can guarantee the required suitable environmental condition of enrichment vegetation through adopting artifical auxiliary measure in order to solve above-mentioned problem, combines technical means such as heavy metal passivation, soil improvement and introduction pioneer plant, provides the condition for vegetation recovery and ecological remediation in earlier stage.
The utility model discloses a following technical scheme realizes above-mentioned purpose:
the perennial enrichment plant blanket suitable for the lead-zinc tailings comprises a hemp coconut net layer, sedum lead-zinc enrichment plants, a root fixing layer, a microbial inoculum layer and a microbial adsorption layer, wherein the hemp coconut net layer, the sedum lead-zinc enrichment plants, the root fixing layer, the microbial inoculum layer and the microbial adsorption layer are sequentially arranged from top to bottom, and the plant blanket is fixed on a soil layer by adopting a fixing piece.
When the sedum aizoon blanket is used, a blanket body is prefabricated, sedum aizoon stems and leaves are inserted or broadcast sown on the surface of the blanket, after a plant blanket with the coverage degree of more than 90% is pre-cultivated, the blanket is laid on a tailing land, fixing fixtures are nailed into the edge of the plant blanket at intervals of 1-2 meters, the fixing fixtures are hammered into a soil layer from a head, and the connecting structure can fall into nail tips or nail tip soil after being stressed.
Preferably, the hemp net layer is a thin-layer hemp net, the surface of the thin-layer hemp net is provided with meshes, and the sedum lead-zinc enriched plants are fixed in the meshes during cuttage.
Preferably, the lead-zinc enriched plant of sedum is one or more of sedum alfredii hance, sedum plumbizincicola, sedum elongatum and orostachys fimbriatus.
Preferably, the root fixing layer is formed by mixing grass carbon, red jade soil, deer marsh soil and zeolite, and is added with calcium superphosphate.
Preferably, the microbial inoculum layer mainly contains immobilized microbial inoculum taking diatomite as a carrier.
Preferably, the number of bacteria belonging to the genus Desulfuricus, genus Desulfurobacterium and genus Desulfoenteric bacteria in the immobilized microbial agent is 107-108CFU/g。
Preferably, the microorganism adsorption layer is a layer of activated carbon fiber felt with the thickness of 2-5 mm.
Preferably, the fixing piece is made of degradable branches or bamboo poles.
To sum up, the utility model has the advantages that: according to the plant blanket, sedum lead-zinc enriched plants are introduced to serve as pioneer seeds, and heavy metal pollution in soil can be transferred and converted through the effects of absorption, volatilization, root filtration, degradation, stabilization and the like of the plants;
the red jade soil, the deer marsh soil, the zeolite, the diatomite, the activated carbon fiber felt and the like can be used as a sedum plant growth substrate, a heavy metal passivator and a microbial adsorbent, and the calcium superphosphate can be used as a plant fertilizer and a heavy metal passivator;
sulfate reducing bacteria contained in the microbial inoculum layer can perform a sulfur removal effect, and the soil quality of a tailing area is improved;
the microorganism adsorption layer is a layer of activated carbon fiber felt with the thickness of about 2-5mm, can adsorb microorganism living bodies released by the microbial inoculum layer and provides a habitat for the microorganism living bodies;
the plant blanket provided by the application combines technical means such as heavy metal passivation, soil improvement and pioneer plant introduction, and provides conditions for early vegetation recovery and ecological restoration.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a layered structure diagram of the plant carpet of the present invention.
The reference numerals are explained below:
1. a hemp coconut net layer; 2. sedum lead-zinc enriched plants; 3. a root fixing layer; 4. a microbial inoculum layer; 5. And (4) a microorganism adsorption layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, the utility model provides a suitable lead and zinc tailings's perennial enrichment plant blanket, including the numb coconut palm stratum reticulare 1, sedum lead and zinc enrichment plant 2, root system fixed bed 3, microbial inoculum layer 4 and the microbial adsorption layer 5 that from top to bottom distribute in proper order to this plant blanket adopts the mounting to be fixed in the soil layer. By adopting the technical scheme, when the plant blanket is used, the blanket body is prefabricated, sedum stems and leaves are inserted or broadcast sown on the surface of the blanket, the plant blanket with the coverage degree of more than 90% is pre-cultivated, the blanket is laid on a tailing land, fixing pieces are nailed at the edge of the vegetation blanket at intervals of 1-2 meters, the fixing pieces are hammered into the soil layer, and the connecting structure can fall into the soil after being stressed.
As a preferred embodiment of the scheme, the hemp net layer 1 is a thin-layer hemp net, is arranged on the topmost layer of the whole enriched plant blanket, has meshes on the surface, and is fixed in the meshes when the sedum lead-zinc enriched plant 2 is inserted. Wherein the lead-zinc enriched plant 2 of Sedum is one or more of Sedum alfredii Hance, Sedum plumbizincicola, Sedum longipedunculata and herba Orostachyos. The lead and zinc enrichment plant 2 of sedum is arranged on the lower layer of the hemp net layer 1 and is a blanket layer for culturing the lead and zinc enrichment plant 2 of sedum.
The root fixing layer 3 is arranged on the lower layer of the lead-zinc enrichment plant 2 of sedum, the root fixing layer 3 is formed by mixing turf, red jade soil with the grain diameter of 3-5mm, pyrolusite soil and zeolite according to the volume ratio of 2:1:1:1, and meanwhile, calcium superphosphate with the proportion of about 1/10 is added.
The lower layer of the root system fixing layer 3 is a microbial inoculum layer 4, the microbial inoculum layer 4 mainly contains sulfate reducing bacteria and is an immobilized microbial inoculum taking diatomite as a carrier, and the number of bacteria of the genera Desulfurvibrio, Desulfuricus and Desulfuricus enterobacter in the immobilized microbial inoculum is 107-108CFU/g. The lower layer of the microbial inoculum layer 4 is a microbial adsorption layer 5, and the microbial adsorption layer 5 is a layer of activated carbon fiber felt with the thickness of 2-5 mm.
The fixing piece adopts degradable branches or bamboo poles.
The sedum plants on the vegetation carpet surface grow rapidly after meeting rainwater, and after reaching a certain height, the overground parts can be trimmed and collected by a grass mower, so that the decomposition of residues after the plants wither is avoided, and heavy metal ions are leached to the soil again.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A perennial enrichment plant blanket suitable for lead-zinc tailings is characterized in that: the ecological restoration method comprises a hemp coconut net layer, sedum lead-zinc enriched plants, a root fixing layer, a microbial inoculum layer and a microbial adsorption layer, wherein the hemp coconut net layer, the sedum lead-zinc enriched plants, the root fixing layer, the microbial inoculum layer and the microbial adsorption layer are sequentially arranged from top to bottom, and a plant blanket is fixed on a soil layer by adopting a fixing piece.
2. The perennial enrichment plant blanket suitable for lead-zinc tailings of claim 1, wherein: the hemp coconut net layer is a thin-layer hemp coconut net, the surface of the hemp coconut net layer is provided with meshes, and the sedum lead-zinc enriched plants are fixed in the meshes during cuttage.
3. The perennial enrichment plant blanket suitable for lead-zinc tailings of claim 1, wherein: the Crassulaceae lead-zinc enriched plant is one or more of Sedum alfredii Hance, Sedum plumbizincicola, Sedum longipedunculata and Orostachys jatamansi.
4. The perennial enrichment plant blanket suitable for lead-zinc tailings of claim 1, wherein: the microbial inoculum layer mainly contains an immobilized microbial inoculum taking diatomite as a carrier.
5. The perennial enrichment plant blanket suitable for lead-zinc tailings of claim 4, wherein: the immobilized bacteria agent contains bacteria of genus Desulfurvibrio, genus Desulfuricus and genus Desulfoenteric bacteria with number of 107-108CFU/g。
6. The perennial enrichment plant blanket suitable for lead-zinc tailings of claim 1, wherein: the microorganism adsorption layer is an activated carbon fiber felt layer with the thickness of 2-5 mm.
7. The perennial enrichment plant blanket suitable for lead-zinc tailings of claim 1, wherein: the fixing piece adopts degradable branches or bamboo poles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921389844.4U CN211210720U (en) | 2019-08-26 | 2019-08-26 | Perennial enrichment plant blanket suitable for lead-zinc tailings |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921389844.4U CN211210720U (en) | 2019-08-26 | 2019-08-26 | Perennial enrichment plant blanket suitable for lead-zinc tailings |
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| CN211210720U true CN211210720U (en) | 2020-08-11 |
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| CN201921389844.4U Active CN211210720U (en) | 2019-08-26 | 2019-08-26 | Perennial enrichment plant blanket suitable for lead-zinc tailings |
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