CN215924528U - Environment-friendly root separating system with biological purification function - Google Patents
Environment-friendly root separating system with biological purification function Download PDFInfo
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Abstract
The utility model discloses an environment-friendly root separating system with a biological purification function, which takes an emergent aquatic plant planting sample line as an initial edge, takes a width edge towards one side of the center of a water body, takes the elevation of the bottom of the water body as a reference, downwards expands and digs an isolation groove unit, fills a filler unit in the isolation groove unit, and leads the space downwards at the top of the isolation groove to form an aerobic zone, an facultative zone and an anaerobic zone in sequence. The utility model separates plants by the isolation groove unit, and prevents the plant species with strong ecological encroachment capacity from infiltrating other plants through roots.
Description
Technical Field
The utility model relates to the technical field of ecological restoration engineering. More particularly, the present invention relates to an environmentally friendly root partitioning system having a biological purification function.
Background
With the continuous development of social economy, various water pollution problems such as water body black and odor, water quality eutrophication and the like become more serious, so that the normal production activities and the living quality of people are threatened gradually, and the water environment is the root for human survival. In recent years, with the release of relevant environmental remediation policies such as the water pollution prevention and control action plan, environmental pollution abatement and ecosystem remediation problems have become the subject of major domestic attention.
The aquatic plants are important components of a river and lake ecological system, have remarkable ecological functions, transfer pollution load in a water body system through the growth of the plants, provide a growth and propagation place for microorganisms through developed root systems of the aquatic plants, decompose pollutants in water for the absorption of the plants, and have certain functions of absorption and purification, water quality clarification, algae inhibition and the like. Therefore, the aquatic plant restoration planting technology is an important means for restoration and treatment of environmental water pollution, water quality restoration, water ecology restoration and construction of water areas such as urban rivers, lakes, ponds and the like. The aquatic plants are not used in large quantity in a drainage basin comprehensive treatment project, a sponge city construction project and a river and lake ecological restoration project, but various troublesome problems also occur in the application process of the aquatic plants.
In the project design scheme stage, a designer can design a scheme for planting the aquatic plants according to the specific landscape visual effect and the ecological functions of water purification and the like of various groups of the aquatic plants and simultaneously by applying the design principles of landscape design, aesthetics and the like. However, in practice, most of the commonly used aquatic plants such as reed, typha orientalis, arrowhead, thaliana gigantea and other emergent aquatic plants have strong fertility and ecological aggressiveness, and often 1 to 3 years after the project is completed, the phenomenon that the adjacent aquatic plants erode other plants occurs, namely, the adjacent plants do not show mutual influence at the initial stage of the project, but the plants with strong aggressiveness in the region can completely replace the growth space of one adjacent plant or the whole region of plants along with the lapse of time. So that the biodiversity of the aquatic plants is reduced, and the landscape effect and the ecological purification function of the originally designed scheme are greatly influenced. In addition, for projects without measures for restricting the growth space of emergent aquatic plants, when the growth environment is appropriate, plants with strong aggressiveness can invade most of the space of rivers and lakes through 1-2 growth and breeding seasons, so that negative effects are brought to water with a flood-carrying function, and meanwhile, for project operation and maintenance units, a large amount of extra manpower, financial resources and material resources are required to be input to harvest, transport and treat the plants growing in disorder at the project operation and maintenance stage, wherein the labor intensity is high, and the efficiency is low.
At present, the technological measures for limiting the disordered growth of emergent aquatic plants in the industry are mainly the root separation process of plants by using PVC plates or PVC plastic cloth and the measure for carrying out plant enclosure by using pine piles or cedar piles. The method of using PVC plate or PVC plastic cloth to separate the roots of plants is undoubtedly to transfer the artificially synthesized non-degradable chemical product pollutants into the environment, which is not beneficial to environmental protection. Meanwhile, the energy flow and the material circulation of the natural ecological systems on two sides of the root separation measure are forcibly blocked and destroyed, various biological activities are blocked, and the natural succession and the self-restoration of the ecological systems are not facilitated. In the aspect of implementation effect, after investigation and actual implementation, the plant enclosure is carried out by using pine piles or fir piles, so that the plant enclosure has a certain constraint effect on the growth of short-root plants, but has a small effect on long-root plants such as reeds. In the aspect of landscape effect, if the construction quality of the timber pile is not in place, the timber pile has the effects of showing from the aspects of height, diameter, line shape and the likeCan bring negative effects to the landscape effect. In terms of manufacturing cost, the single construction cost of the pine pile and the cedar pile is about 2000-3000 yuan/m3The cost is high. In the aspect of operation and maintenance, the arrangement of the wooden piles in the river channel can form a barrier for the later dredging project of the water body, and is also not beneficial to the protection of national assets. In the aspect of resource utilization, the use of a large number of wooden piles can cause excessive utilization of forest resources, and is not beneficial to environmental protection. Therefore, it is necessary to find a low-cost, ecological and environment-friendly technique for root isolation of aquatic plants.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an environment-friendly root-separating system technology with a biological purification function, aiming at the problem that emergent aquatic plants with strong fertility and ecological aggressiveness often invade the growth space of aquatic plants adjacent or in an area within 1-3 years after the implementation of a project are finished in a drainage basin comprehensive treatment project, a sponge city construction project and a river and lake ecological restoration project, which are commonly used, have good landscape effect and strong water purification capacity.
To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, there is provided an environment-friendly root partitioning system having a biological purification function, in which an emergent aquatic plant planting line is used as a starting edge, a width edge is provided to one side of a center of a water body, and an elevation of a bottom of the water body is used as a reference, an isolation tank unit is downwardly expanded and excavated, and a filler unit is filled in the isolation tank unit, so that an oxygen zone, an facultative zone, and an anaerobic zone are sequentially formed in a downward space at a top of the isolation tank.
Preferably, when the emergent aquatic plants are of a shallow root system type, the width edge of the isolation groove unit is set to be at least 20cm, the depth is set to be at least 30cm, and the length is set according to the partition length of different emergent aquatic plants;
the packing unit comprises from bottom to top: the bottom layer filler layer, the non-woven fabric layer at the boundary of the filler, the surface layer filler layer and the isolation non-woven fabric layer arranged at the surface layer at the upper part in the surface layer filler layer.
Preferably, the bottom filler layer is formed by paving broken stones or gravels with the grain diameter of 2-4cm according to the porosity of 35-45%;
the non-woven fabric layer at the filler boundary covers and fully spreads the top surface of the whole bottom filler layer;
the isolation non-woven fabric layer at the surface layer divides the surface layer filler layer into a facultative area at the lower part of the surface layer filler layer, and an aerobic area at the upper part of the surface layer filler layer; the surface packing layer is formed by paving broken stones or gravels with the grain diameter of 0.5-2cm according to the porosity of 30-35%.
Preferably, when the emergent aquatic plants are of deep root system type, the width edge of the isolation groove unit is set to be at least 40cm, the depth is set to be at least 80cm, and the length is set according to the partition length of different emergent aquatic plants;
the packing unit comprises from bottom to top: the bottom layer filler layer, the non-woven fabric layer at the boundary of the filler, the surface layer filler layer and the isolation non-woven fabric layer arranged at the surface layer at the upper part in the surface layer filler layer.
Preferably, the bottom filler layer is formed by paving broken stones or gravels with the grain diameter of 2-4cm according to the porosity of 35-45%;
the non-woven fabric layer at the filler boundary covers and fully spreads the top surface of the whole bottom filler layer;
the isolation non-woven fabric layer at the surface layer divides the surface layer filler layer into a facultative area at the lower part of the surface layer filler layer, and an aerobic area at the upper part of the surface layer filler layer; the surface packing layer is formed by paving broken stones or gravels with the grain diameter of 0.5-2cm according to the porosity of 30-35%.
Preferably, the bottom filler layer is formed by paving limestone, volcanic rock or embedding bacteria with the grain diameter of 2-4cm according to the porosity of 35-45%;
the non-woven fabric layer at the filler boundary covers and fully spreads the top surface of the whole bottom filler layer;
the isolation non-woven fabric layer at the surface layer divides the surface layer filler layer into a facultative area at the lower part of the surface layer filler layer, and an aerobic area at the upper part of the surface layer filler layer; the surface layer filler layer is formed by paving limestone, volcanic rock or embedding bacteria with the grain diameter of 0.5-2cm according to the porosity of 30-35%.
Preferably, when the emergent aquatic plants are of deep root system type, the width edge of the isolation groove unit is set to be at least 40cm, the depth is set to be at least 80cm, and the length is set according to the partition length of different emergent aquatic plants;
the packing unit comprises from bottom to top: the bottom layer filler layer, the non-woven fabric layer at the boundary of the filler, the middle layer filler layer, the isolation non-woven fabric layer at the surface layer and the surface layer filler layer.
Preferably, the bottom filler layer is formed by paving limestone, volcanic rock or embedding bacteria with the grain diameter of 4-15cm according to the porosity of 45-55%;
the non-woven fabric layer at the filler boundary covers and fully spreads the top surface of the whole bottom filler layer;
the middle layer packing layer is paved on the non-woven fabric layer at the boundary of the packing by limestone, volcanic rock or embedding bacteria with the grain diameter of 2-4cm according to the porosity of 35-45%;
laying a surface layer isolation non-woven fabric layer on the top surface of the middle layer packing layer;
and a surface layer packing layer is paved on the isolation non-woven fabric layer at the surface layer, and the surface layer packing layer is formed by paving crushed stones, gravels, limestone, volcanic rocks or embedding bacteria with the grain diameter of 0.5-2cm in a thickness of 20cm according to the porosity of 30-35%.
The utility model at least comprises the following beneficial effects:
(1) according to the method, firstly, a planting partition sample line after line laying is implemented along a plant design scheme, the width and the depth of at least 20cm and at least 30cm are expanded and dug towards one side of the center of a water body, the length is dug into a groove according to the length designed by each plant partition in the scheme, the specific size is adjusted according to the plant type, and then fillers made of gravel, broken stone or limestone and other materials are added into the groove to form a novel plant root separation system technology and a buried wetland purification system technology in the water body. The problem of disordered growth of plants can be effectively solved, the impact capacity of the plants on high-flow-rate water bodies is improved, the survival rate is improved, the construction period cost is reduced, different oxygen-containing habitats and attachment spaces are provided for various background microorganisms, a buried wetland system is formed together with aquatic plants, a foundation is laid for enhancing the water purification capacity of the water body ecological system and improving the biological diversity of the water body ecological system, and the water purification function of the water body ecological system is fundamentally enhanced.
(2) The utility model adopts the riverway gravel, the broken stone or limestone and other functional material fillers, and the broken stone not only has great advantages in manufacturing cost compared with a wooden pile, but also has the advantages of local material availability, long service life and the like. In addition, no negative influence is generated when the water body dredging project is implemented in future, and the water body dredging project can be directly dug out, washed, recycled and reused, so that not only is natural resources not wasted, but also national property is not lost.
(3) The utility model can flexibly adjust the groove excavation amount, the filler material and the using amount according to the growth characteristics and the occupation characteristics of different plant species, has strong pertinence to different plant species, can greatly reduce a large amount of extra work and cost generated by harvesting, transporting, treating and disposing the randomly grown plants in the project operation and maintenance period, and simultaneously provides the greatest help for maintaining the landscape visual effect and the ecological purification function of the design scheme.
Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.
Drawings
FIG. 1 is a schematic view of a simple shallow root type root partitioning system;
FIG. 2 is a schematic view of a simple deep root system type root partitioning system;
FIG. 3 is a schematic view of a complex shallow root system type root partitioning system;
fig. 4 is a schematic diagram of a complex deep root system type root partitioning system.
Description of reference numerals: 1 isolation groove unit, 2 filler units, 3 surface layer filler layers, 4 surface layer isolation non-woven fabric layers, 5 filler boundary non-woven fabric layers, 6 bottom layer filler layers and 7 middle layer filler layers.
Detailed Description
The present invention is further described in detail below with reference to examples so that those skilled in the art can practice the utility model with reference to the description.
In the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
An environment-friendly root-separating system technology for preventing emergent aquatic plants in water bodies such as rivers, lakes, ponds and the like from growing in a disordered manner and an underground wetland purification system technology in the water bodies of the rivers, the lakes and the ponds. The system technology comprises a simple type and a complex type, and is divided into a shallow root type and a deep root type according to the characteristics of the roots of emergent aquatic plants. The simple and complex system technical structure is mainly composed of an isolation groove unit and a filler unit. Wherein the deep root type is for reed, Thalia flower, and flos Nelumbinis, and the shallow root type is for Typha orientalis, Scirpus triquetrum, etc.
Physical isolation space is formed between the encroaching emergent aquatic plants and the common aquatic plants by constructing the isolation groove units in the water body, so that the plants with strong ecological encroachment force are prevented from encroaching other plants through roots. On the basis of the isolation groove, the filler is filled in the isolation groove, and an oxygen area, an facultative area and an anaerobic area are sequentially formed from the top of the isolation groove to the lower space, so that different oxygen-containing living environments are provided for various types of background microorganisms in the water body, and favorable conditions are formed for the expansion culture and the recovery of background microorganism communities. Partial roots of the planted emergent aquatic plants are tightly combined with the filler, so that the impact of the plants on high-flow-rate water bodies is strengthened, the survival rate is improved, the construction cost is reduced, and meanwhile, a buried wetland system is formed, so that a foundation is laid for strengthening the water quality capability of the own ecological system of the water bodies and improving the biological diversity of the ecological system of the water bodies. In addition, the non-woven fabrics with certain specifications are arranged at the special positions of the packing units, so that the water body sediment is prevented from blocking the packing and the packing with different particle sizes from influencing each other, and the overall functional effect of the system technology is improved.
Examples 1 to 4 show various preferred embodiments of the present invention.
Example 1
Simple shallow root system type
As shown in fig. 1, the emergent aquatic plants are planted along the sampling line as the starting edge, the width edge is arranged on one side of the center of the water body, the elevation of the bottom of the water body is used as the reference, the isolation groove units are downwards expanded and dug, the filling units are filled in the isolation groove units, so that the downward space on the top of the isolation groove is sequentially provided with an oxygen area, a facultative area and an anaerobic area, different emergent aquatic plants are separated through the isolation groove units, and the plants with strong ecological encroachment capacity are prevented from being invaded and swallowed by other plants through the roots.
When the emergent aquatic plants are of a shallow root system type, the width of the isolation groove unit is 30cm, the depth of the isolation groove unit is 40cm, and the length of the isolation groove unit is set according to the partition length of different emergent aquatic plants.
The packing unit comprises from bottom to top: the bottom layer filler layer, the non-woven fabric layer at the filler boundary position are used as the filler boundary, the surface layer filler layer and the isolation non-woven fabric layer at the surface layer position arranged at the upper part in the surface layer filler layer.
The bottom layer filler layer is formed by paving 2-4 cm-sized macadam with the thickness of 10cm according to the porosity of 35-45%;
the non-woven fabric layer at the boundary of the filler is used for covering and paving the whole top surface of the bottom filler layer after the bottom filler layer is paved.
The isolation non-woven fabric layer at the surface layer is formed by paving a surface layer filler layer with the thickness of 20cm and then forming a facultative area, the isolation non-woven fabric layer at the surface layer covers and fully paves the top surface of the facultative area, and the specification of non-woven fabric adopted by the isolation non-woven fabric layer at the surface layer is 200g/m2Finally, a surface layer filler layer with the thickness of 10cm is paved to form an aerobic area; the surface filler layer is formed by paving broken stones with the grain diameter of 0.5-2cm according to the porosity of 30-35%.
Example 2
Simple deep root system type
As shown in fig. 2, when the emergent aquatic plants are of deep root system type, the width edge of the isolation groove unit is set to be 50cm, the depth is set to be 100cm, and the length is set according to the partition length of different emergent aquatic plants;
the packing unit comprises from bottom to top: the bottom layer filler layer, the non-woven fabric layer at the filler boundary position are used as the filler boundary, the surface layer filler layer and the isolation non-woven fabric layer at the surface layer position arranged at the upper part in the surface layer filler layer.
The bottom layer packing layer is formed by paving gravels with the grain diameter of 2-4cm according to the porosity of 35-45% and the thickness of 40 cm;
the non-woven fabric layer at the filler boundary is a non-woven fabric layer which is paved on the bottom filler layer and then covers and paves the whole top surface of the bottom filler layer, and the non-woven fabric layer at the filler boundary adopts the non-woven fabric with the specification of 200g/m2The nonwoven fabric of (1);
after the surface filler is paved on the surface isolation non-woven fabric layer at the surface layer with the thickness of 50cm, the top surface of the paved surface filler layer is covered and paved with the surface isolation non-woven fabric layer at the surface layer, and finally the surface filler layer with the thickness of 10cm is paved; the non-woven fabric specification adopted by the isolation non-woven fabric layer at the surface layer is 200g/m2The surface layer packing layer is formed by paving gravels with the grain diameter of 0.5-2cm according to the porosity of 30-35%.
Example 3
Complex shallow root system type
As shown in fig. 3, when the emergent aquatic plants are of a shallow root system type, the width side of the isolation groove unit is set to be 30cm, the depth is set to be 40cm, and the length is set according to the partition length of different emergent aquatic plants;
the packing unit comprises from bottom to top: the bottom layer filler layer, the non-woven fabric layer at the filler boundary position are used as the filler boundary, the surface layer filler layer and the isolation non-woven fabric layer at the surface layer position arranged at the upper part in the surface layer filler layer.
The bottom layer filler layer is formed by paving volcanic rocks with the particle size of 2-4cm according to the porosity of 35-45% and the thickness of 10 cm;
the non-woven fabric layer at the filler boundary is a non-woven fabric layer which is paved on the bottom filler layer and then covers and paves the whole top surface of the bottom filler layer, and the non-woven fabric layer at the filler boundary adopts the non-woven fabric with the specification of 200g/m2The nonwoven fabric of (1);
after the surface filler is paved on the surface isolation non-woven fabric layer at the surface layer for 20cm in thickness, the top surface of the paved surface filler layer is covered and paved with the surface isolation non-woven fabric layer at the surface layer, and finally the surface filler layer with the thickness of 10cm is paved; the non-woven fabric specification adopted by the isolation non-woven fabric layer at the surface layer is 200g/m2The surface layer filler layer is formed by paving limestone with the grain diameter of 0.5-2cm according to the porosity of 30-35%.
Example 4
Complex deep root system type
As shown in fig. 4, when the emergent aquatic plants are of deep root system type, the width side of the isolation groove unit is set to be 50cm, the depth is set to be 100cm, and the length is set according to the partition length of different emergent aquatic plants;
the packing unit comprises from bottom to top: the bottom layer filler layer, the non-woven fabric layer at the boundary of the filler, the middle layer filler layer, the isolation non-woven fabric layer at the surface layer and the surface layer filler layer.
The bottom layer filler layer is formed by paving volcanic rocks with the grain diameter of 4-15cm according to the porosity of 45-55% and the thickness of 40 cm; the non-woven fabric layer at the filler boundary is a non-woven fabric layer which is paved on the bottom filler layer and then covers and paves the whole top surface of the bottom filler layer, and the non-woven fabric layer at the filler boundary adopts the non-woven fabric with the specification of 200g/m2The nonwoven fabric of (1); the middle layer packing layer is formed by paving limestone with the particle size of 2-4cm on the non-woven fabric layer at the boundary of the packing layer according to the porosity of 35-45% and is 40cm thick; laying a middle layer filler layer, laying an isolation non-woven fabric layer at the surface layer, covering the top surface of the middle layer filler layer, and paving the isolation non-woven fabric layer at the top surface of the middle layer filler layer to form a layer with a specification of 200g/m2The nonwoven fabric of (1); and a surface layer packing layer is paved on the isolation non-woven fabric layer at the surface layer, and the surface layer packing layer is formed by paving gravels with the grain diameter of 0.5-2cm with the thickness of 20cm according to the porosity of 30-35%.
While embodiments of the utility model have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable to various fields of endeavor for which the utility model may be embodied with additional modifications as would be readily apparent to those skilled in the art, and the utility model is therefore not limited to the details given herein and to the embodiments shown and described without departing from the generic concept as defined by the claims and their equivalents.
Claims (8)
1. The utility model provides an environment-friendly separates root system with biological purification function, its characterized in that, includes the isolation tank unit, the isolation tank unit is for planting the appearance line along emergent aquatic plant and is the initiating side, to water center one side be the width limit, use water bottom elevation as the structure of benchmark, it has the filler unit to fill in the isolation tank unit, the decurrent space in isolation tank unit top has set gradually aerobic zone, facultative zone and anaerobic zone.
2. The environment-friendly root separating system with biological purification function as claimed in claim 1, wherein when the emergent aquatic plants are of shallow root system type, the width side of the separating groove unit is set to be at least 20cm, the depth is set to be at least 30cm, and the length is set according to the partition length of different emergent aquatic plants;
the packing unit comprises from bottom to top: the bottom layer filler layer, the non-woven fabric layer at the boundary of the filler, the surface layer filler layer and the isolation non-woven fabric layer arranged at the surface layer at the upper part in the surface layer filler layer.
3. The environmentally friendly root-separating system with biological purification function of claim 2, wherein the bottom packing layer is laid by gravels or gravels with the grain diameter of 2-4cm according to the porosity of 35-45%;
the non-woven fabric layer at the filler boundary covers and fully spreads the top surface of the whole bottom filler layer;
the isolation non-woven fabric layer at the surface layer divides the surface layer filler layer into a facultative area at the lower part of the surface layer filler layer, and an aerobic area at the upper part of the surface layer filler layer; the surface packing layer is formed by paving broken stones or gravels with the grain diameter of 0.5-2cm according to the porosity of 30-35%.
4. The environment-friendly root separating system with biological purification function as claimed in claim 1, wherein when the emergent aquatic plants are of deep root system type, the width side of the separating groove unit is set to be at least 40cm, the depth is set to be at least 80cm, and the length is set according to the partition length of different emergent aquatic plants;
the packing unit comprises from bottom to top: the bottom layer filler layer, the non-woven fabric layer at the boundary of the filler, the surface layer filler layer and the isolation non-woven fabric layer arranged at the surface layer at the upper part in the surface layer filler layer.
5. The environmentally friendly root separation system with biological purification function of claim 4, wherein the bottom packing layer is laid by gravels or gravels with the particle size of 2-4cm according to the porosity of 35-45%;
the non-woven fabric layer at the filler boundary covers and fully spreads the top surface of the whole bottom filler layer;
the isolation non-woven fabric layer at the surface layer divides the surface layer filler layer into a facultative area at the lower part of the surface layer filler layer, and an aerobic area at the upper part of the surface layer filler layer; the surface packing layer is formed by paving broken stones or gravels with the grain diameter of 0.5-2cm according to the porosity of 30-35%.
6. The environment-friendly root-separating system with biological purification function as claimed in claim 2, wherein the bottom filler layer is laid by limestone or volcanic rock with particle size of 2-4cm according to porosity of 35-45%;
the non-woven fabric layer at the filler boundary covers and fully spreads the top surface of the whole bottom filler layer;
the isolation non-woven fabric layer at the surface layer divides the surface layer filler layer into a facultative area at the lower part of the surface layer filler layer, and an aerobic area at the upper part of the surface layer filler layer; the surface packing layer is formed by paving limestone or volcanic rock with the grain diameter of 0.5-2cm according to the porosity of 30-35%.
7. The environment-friendly root separating system with biological purification function as claimed in claim 1, wherein when the emergent aquatic plants are of deep root system type, the width side of the separating groove unit is set to be at least 40cm, the depth is set to be at least 80cm, and the length is set according to the partition length of different emergent aquatic plants; the packing unit comprises from bottom to top: the bottom layer filler layer, the non-woven fabric layer at the boundary of the filler, the middle layer filler layer, the isolation non-woven fabric layer at the surface layer and the surface layer filler layer.
8. The environmentally friendly root-separating system with biological purification function of claim 7, wherein the bottom filler layer is laid by limestone or volcanic rock with a grain size of 4-15cm according to a porosity of 45-55%;
the non-woven fabric layer at the filler boundary covers and fully spreads the top surface of the whole bottom filler layer;
the middle packing layer is laid on the non-woven fabric layer at the boundary of the packing by limestone or volcanic rock with the particle size of 2-4cm according to the porosity of 35-45%;
laying a surface layer isolation non-woven fabric layer on the top surface of the middle layer packing layer;
and a surface layer filler layer is paved on the isolation non-woven fabric layer at the surface layer, and the surface layer filler layer is formed by paving limestone or volcanic rock with the grain diameter of 0.5-2cm in a thickness of 20cm according to the porosity of 30-35%.
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| CN202121086895.7U CN215924528U (en) | 2021-05-20 | 2021-05-20 | Environment-friendly root separating system with biological purification function |
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| CN202121086895.7U CN215924528U (en) | 2021-05-20 | 2021-05-20 | Environment-friendly root separating system with biological purification function |
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