CN217895384U - Terrace type ecological filter belt - Google Patents
Terrace type ecological filter belt Download PDFInfo
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- CN217895384U CN217895384U CN202221790288.3U CN202221790288U CN217895384U CN 217895384 U CN217895384 U CN 217895384U CN 202221790288 U CN202221790288 U CN 202221790288U CN 217895384 U CN217895384 U CN 217895384U
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Abstract
The utility model provides a terrace type ecological filter belt, which comprises a filter mechanism; the filtering mechanism comprises a plurality of filtering units which are in a step shape; the filter unit comprises a first filter assembly, a second filter assembly, a third filter assembly and a fourth filter assembly which are arranged along the flowing direction of rainwater. A terraced fields formula ecological filtration area, compare in traditional slope type ecological filtration area, carry out filtration treatment to the rainwater through the filter unit who is the echelonment in this application, and first filtering component and second filtering component below all are equipped with waterproof base, avoided the rainwater from first filtering component and second filtering component below infiltration into the soil in, improved and be the filter effect of echelonment filter unit to the rainwater, and the filtration stone in the lead wire gabion can be effectual with the rainwater in great particulate matter, like silt, plant residual body piece etc. hold back, realize the prefilter of rainwater.
Description
Technical Field
The utility model belongs to rainwater purifies the field, especially relates to a terraced fields formula ecological filter belt.
Background
Along with sponge city construction impels, the rainwater resource receives attention, and various rainwater purification facilities constantly build, and wherein ecological filter belt replaces traditional retaining wall, cement hardening slope etc. usually, and ecological filter belt is ramp type structure usually, through porous filter material, microorganism and plant combined action, intercepts, adsorbs pollutant in the rainwater runoff, reaches the effect of purifying the rainwater. In practical application, however, the ecological filter belt which takes the porous filter material as a main body structure and lacks the hard frame support has limited strength, can only be built into a relatively gentle slope, and has a relatively large limitation on the application range; when rainwater flows through the slope type ecological filter belt, a small amount of potential energy is lost under the action of friction force, and the rainwater runoff flow velocity reduction effect is weak; the slope type ecological filter belt is not beneficial to water and soil conservation, and the matrix supporting the growth of plants is easy to run off under the impact of rainwater runoff, so that the slope type ecological filter belt becomes a new pollution source; the first row of plants at the top of the ecological filter belt are seriously impacted by runoff rainwater, so that the plants are easily dead, and the pollutants such as silt, organic matter particles and the like retained in the upper filter material and the planting matrix are the most, so that blockage is easily caused, and the rainwater infiltration and the filtering and purifying effects are influenced. In order to respond to sponge city construction, reduce the potential energy of runoff of rainwater, realize the purification of the runoff water body, improve the service life of the ecological filter belt, reduce the maintenance cost and improve the landscape abundance, a terrace-type ecological filter belt needs to be developed.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention is directed to a terrace-type ecological filter belt, which is designed to solve at least one of the above-mentioned problems.
In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:
a terrace type ecological filter belt comprises a filter mechanism;
the filtering mechanism comprises a plurality of filtering units which are in a step shape;
the filter unit comprises a first filter assembly, a second filter assembly, a third filter assembly and a fourth filter assembly which are arranged along the flowing direction of rainwater.
Waterproof bases are arranged below the first filtering assembly and the second filtering assembly;
the first filtering assembly comprises a water collecting tank and a plumbous gabion arranged in the water collecting tank;
the wire gabion is filled with filter stones;
a flow guide opening is formed in the upper end part of the water collecting tank close to one end of the second filtering component;
the water collecting tank is arranged above the waterproof base;
and the upper end of the lead wire gabion is fixedly connected with a gabion pull ring.
Further, the second filter assembly comprises a first filter layer, a second filter layer and a third filter layer which are arranged from bottom to top; the first filter layer is disposed over the impermeable base.
Furthermore, the first filter layer is a volcanic rock layer, the second filter layer is a gold sand layer, and the third filter layer is a soil matrix layer.
Further, the number of the third filter assemblies is not less than one. Furthermore, the number of the third filter assemblies is 2.
Further, the third filter assembly comprises a fourth filter layer, a fifth filter layer and a sixth filter layer which are arranged from bottom to top; and a rammed earth base is arranged below the fourth filter layer.
Furthermore, the fourth filter layer is a gravel layer, the fifth filter layer is a gold sand layer, and the sixth filter layer is a soil matrix layer.
Further, the fourth filter assembly comprises a seventh filter layer and an eighth filter layer which are arranged from bottom to top; the seventh filter layer is disposed above the soil.
Further, the seventh filter layer is a gravel layer, and the eighth filter layer is a carbonized pine cortex.
Furthermore, the upper surface of the third filter layer is also provided with a hard water striking plate.
Furthermore, the upper surface of the sixth filter layer is also provided with a hard water striking plate.
Compared with the prior art, terraced fields formula ecological filtration area have following beneficial effect:
(1) A terraced fields formula ecological filter belt, compare in traditional slope formula ecological filter belt, carry out filtration treatment to the rainwater through the filter unit who is the echelonment in this application to first filtering component and second filtering component below all are equipped with waterproof base, avoided the rainwater from first filtering component and second filtering component below infiltration into the soil in, improved and be the filter effect of echelonment filter unit to the rainwater, and the filtration stone in the plumbous gabion can be effectual with the great particulate matter of sneaking in the rainwater, like silt, plant residual body piece etc. hold back, realize the prefilter of rainwater.
(2) In the terrace-type ecological filter belt, rainwater flows through the filter belt, and relatively large pollutant particles are intercepted at the lead wire gabion and are deposited at the bottom of the water collecting tank, so that the filter belt is convenient to clean subsequently and does not enter other areas of the filter belt, and the maintenance difficulty of the filter mechanism is greatly reduced; other fine particles and soluble pollutants in rain water, such as: pollutants such as organic matters and inorganic salts are adsorbed by filter materials such as volcanic rocks and gravels and plants, so that the content of turbidity, suspended matters, COD (chemical oxygen demand) and nitrogen and phosphorus of rainwater can be effectively reduced, the concentration of the pollutants in the rainwater is reduced, and the water quality is improved.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a schematic view of the overall structure of the filter belt according to the embodiment of the present invention.
Description of reference numerals:
1-a watertight base; 2, a water collecting tank; 3-a flow guide port; 4-a lead wire gabion; 401-gabion pull rings; 5-a first filter layer; 6-a second filter layer; 7-a third filter layer; 8-a fourth filter layer; 9-a fifth filter layer; 10-a sixth filtration layer; 11-rammed earth base; 12-a seventh filter layer; 13-an eighth filter layer; 14-a soil layer; 15-hard water-striking plate; 16-fixed wedge.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features of the embodiments of the present invention may be combined with each other.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of 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 therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The embodiment of the invention provides a terrace-type ecological filter belt, which comprises a filter mechanism; the filtering mechanism comprises a plurality of filtering units which are in a step shape;
the filtering unit comprises a first filtering component, a second filtering component, a third filtering component and a fourth filtering component which are arranged along the rainwater flow direction;
a waterproof base 1 is arranged below each of the first filtering component and the second filtering component;
the first filtering component comprises a water collecting tank 2 and a plumbite cage 4 arranged in the water collecting tank 2; the lead wire gabion 4 is filled with filter stones; the upper end of the lead wire gabion 4 is fixedly connected with a gabion pull ring 401;
a flow guide opening 3 is formed in the upper end part of the water collecting tank 2 close to one end of the second filtering component; the water collection sump 2 is arranged above the watertight base 1.
In some embodiments, the second filter assembly comprises a first filter layer 5, a second filter layer 6, and a third filter layer 7 disposed from bottom to top; the first filter layer 5 is disposed above the impermeable base 1.
In some embodiments, the first filter layer 5 is a volcanic rock layer, the second filter layer 6 is a gold sand layer, and the third filter layer 7 is a soil matrix layer.
In some embodiments, there is not less than one third filter assembly.
In some embodiments, the third filter assembly includes a fourth filter layer 8, a fifth filter layer 9, and a sixth filter layer 10 disposed from bottom to top; a rammed earth base 11 is arranged below the fourth filter layer 8.
In some embodiments, the fourth filter layer 8 is a gravel layer, the fifth filter layer 9 is a gold sand layer, and the sixth filter layer 10 is a soil matrix layer.
In some embodiments, the fourth filter assembly comprises a seventh filter layer 12 and an eighth filter layer 13 disposed from bottom to top; the seventh filter layer 12 is disposed above the soil layer 14.
In some embodiments, the seventh filter layer 12 is a gravel layer and the eighth filter layer 13 is a carbonized pine bark layer.
In some embodiments, the upper surface of the third filter layer 7 is also provided with a hard water striking plate 15.
In some embodiments, the upper surface of the sixth filter layer 10 is also provided with a hard water striking plate 15.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As can be seen from fig. 1, the number of the third filter assemblies is two, and it should be noted that the number of the third filter assemblies in this application is at least one, and the specific number of the third filter assemblies is set according to the actual height difference on site.
The waterproof base 1 provided at the bottom of the first filter assembly and the second filter assembly may be, but not limited to, a masonry or concrete masonry base.
Description for the first filter assembly: the water collecting tank 2 can adopt a ditch structure, a rectangular lead wire gabion 4 with the size consistent with the inner diameter of the ditch is placed in the ditch, the length of the lead wire gabion 4 is 0.5m, the width is 20-30cm, the height and the width are the same, a filtering stone block with the diameter of 5-10cm is placed in the lead wire gabion 4, the filtering stone block can be cobblestones or gravels without limitation, gabion pull rings 401 are installed at four corners of the upper plane of the lead wire gabion 4, the lead wire gabion 4 is moved out manually or mechanically through the gabion pull rings 401, pollutants such as silt and the like in the ditch can be cleaned conveniently, and meanwhile, the lead wire gabion 4 can be cleaned conveniently;
it should be noted that, as shown in fig. 1, the height of the sidewall on one side of the trench is slightly lower than the height of the sidewall on the other side, after rainwater flows into the trench, the water level rises, when the water level rises to the sidewall on the slightly lower side, the rainwater flows out along the diversion port 3 (or a diversion plate with a certain inclination angle may be used), the rainwater flows to the second filtering component through the diversion port 3, a hard water-striking plate 15 is disposed below the diversion port 3 for bearing water impact, and the rainwater that overflows is prevented from directly impacting the third filtering layer 7 on the upper layer of the second filtering component.
Description for the second filter assembly: the second filter component comprises a first filter layer 5, a second filter layer 6 and a third filter layer 7 which are arranged from bottom to top, wherein the first filter layer 5 can be volcanic rock, the second filter layer 6 can be gold sand, the third filter layer 7 can be a soil matrix layer, and the impermeable base 1 arranged below the second filter component can be a waterproof mortar masonry or concrete masonry base, so that plants such as water hyacinth, chinese lobelia, copper coin and the like can be planted on the third filter layer 7 (soil matrix layer).
Description for the third filter assembly: the third filter component comprises a fourth filter layer 8, a fifth filter layer 9 and a sixth filter layer 10 which are arranged from bottom to top, wherein the fourth filter layer 8 can be a gravel layer, the fifth filter layer 9 can be a gold sand layer, the sixth filter layer 10 can be a soil matrix layer, and higher plant waterlogging-resistant plants such as canna, cattail, reed and the like can be planted above the sixth filter layer 10 (soil matrix layer).
Description of the fourth filter assembly: the fourth filter element is the lowermost filter layer in this application, wherein the seventh filter layer 12 may be selected from a gravel layer, wherein the eighth filter layer 13 may be selected from a carbonized pine bark layer, wherein below the gravel layer is an untamped soil layer 14.
A rainwater filtering process: rainwater flows through the lead wire gabion 4, larger particles such as silt and plant residue fragments mixed in the rainwater are settled in the water collecting tank 2 or are intercepted by the lead wire gabion 4, and simultaneously, because the water flow impacts the lead wire gabion 4, the flow velocity of the water flow overflowing into the second filtering component is reduced under the impact and the whirling action of the water flow in different directions, and the potential energy is weakened;
when the rainwater overflows to the second filtering component, the rainwater cannot directly impact the right angle part of the connecting part of the two filtering components but falls on the hard water striking plate 15 along the flow guide port 3, so that impact damage of water flow to the connecting part of the two filtering components is avoided, meanwhile, the water flow is prevented from directly impacting the third filtering layer 7 (soil matrix layer), and the conditions that the soil matrix layer in the region becomes thin and plants are difficult to live are avoided;
the volcanic rock layer arranged in the second filtering component has strong nitrogen and phosphorus adsorption capacity, the lower part of the second filtering component is impermeable, rainwater does not directly permeate downwards but continuously flows downwards into the third filtering component, so that the rainwater is fully purified, and meanwhile, the rainwater accumulated in the filtering belt ensures the moisture requirements of hygrophytes such as water hyacinth, copper coin and the like planted on the filtering belt;
a rammed earth base 11 is arranged below the third filtering component, and rainwater filtered and purified by three layers (or more) can infiltrate downwards to supplement underground water. Rammed earth base 11 can also be connected with impervious base 1 below first filter assembly, second filter assembly with the fixed wedge, has strengthened combination formula foundation structural stability.
The fourth filtering component, namely the filtering component at the lowest end, the bottom is the soil layer 14 which is not tamped, the water permeability is higher, when rainwater which is not infiltrated by the upper filtering component flows to the last filtering component, the purifying effect is achieved, the rainwater is infiltrated rapidly through the soil layer which is not tamped, the eighth filtering layer 13 (carbonized pine bark layer) plays a role in beautifying the ground landscape, the carbonized pine bark is not easy to rot, the service life is longer, and the seventh filtering layer 12 (gravel layer) is used for separating the carbonized pine bark from soil, so that the pine bark is prevented from being polluted by soil and the landscape is prevented from being influenced.
As shown in fig. 1, the first filter unit is the uppermost filter unit (the topmost stage), and the fourth filter unit is the last stage filter unit.
It should be noted that, as shown in fig. 1, the waterproof base 1 and the rammed earth base 11 are also provided with fixing wedges 16 inside, and the fixing wedges 16 in this application may be steel bars or long stones, which play a role of reinforcing the whole structure.
The above description is only for the preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a terraced fields formula ecological filter belt which characterized in that: comprises a filtering mechanism;
the filtering mechanism comprises a plurality of filtering units which are in a step shape;
the filtering unit comprises a first filtering component, a second filtering component, a third filtering component and a fourth filtering component which are arranged along the rainwater flow direction;
a waterproof base (1) is arranged below each of the first filtering component and the second filtering component;
the first filtering component comprises a water collecting tank (2) and a plumbite cage (4) arranged in the water collecting tank (2);
the lead wire gabion (4) is filled with filter stones;
a flow guide opening (3) is formed in the upper end part of the water collecting tank (2) close to one end of the second filtering component;
the water collecting tank (2) is arranged above the impervious base (1);
and the upper end of the lead wire gabion (4) is fixedly connected with a gabion pull ring (401).
2. The terrace-type ecological filter belt according to claim 1, wherein: the second filtering component comprises a first filtering layer (5), a second filtering layer (6) and a third filtering layer (7) which are arranged from bottom to top;
the first filter layer (5) is arranged above the impermeable base (1).
3. The terrace-type ecological filter belt according to claim 2, wherein: the first filter layer (5) is a volcanic rock layer, the second filter layer (6) is a gold sand layer, and the third filter layer (7) is a soil matrix layer.
4. The terrace-type ecological filter belt according to claim 1, wherein: and at least one third filter assembly is arranged.
5. The terrace-type ecological filter belt according to claim 1 or 4, wherein: the third filtering component comprises a fourth filtering layer (8), a fifth filtering layer (9) and a sixth filtering layer (10) which are arranged from bottom to top;
a rammed earth base (11) is arranged below the fourth filter layer (8).
6. The terrace-type ecological filter belt according to claim 5, wherein: the fourth filter layer (8) is a gravel layer, the fifth filter layer (9) is a gold sand layer, and the sixth filter layer (10) is a soil matrix layer.
7. The terrace-type ecological filter belt of claim 1, wherein: the fourth filter component comprises a seventh filter layer (12) and an eighth filter layer (13) which are arranged from bottom to top;
the seventh filter layer (12) is arranged above the soil layer (14).
8. The terrace-type ecological filter belt according to claim 7, wherein: the seventh filter layer (12) is a gravel layer, and the eighth filter layer (13) is a carbonized pine cortex.
9. The terrace-type ecological filter belt according to claim 2, wherein: the upper surface of the third filter layer (7) is also provided with a hard water striking plate (15).
10. The terrace-type ecological filter belt according to claim 5, wherein: the upper surface of the sixth filter layer (10) is also provided with a hard water striking plate (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221790288.3U CN217895384U (en) | 2022-07-13 | 2022-07-13 | Terrace type ecological filter belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221790288.3U CN217895384U (en) | 2022-07-13 | 2022-07-13 | Terrace type ecological filter belt |
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| Publication Number | Publication Date |
|---|---|
| CN217895384U true CN217895384U (en) | 2022-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221790288.3U Active CN217895384U (en) | 2022-07-13 | 2022-07-13 | Terrace type ecological filter belt |
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| CN (1) | CN217895384U (en) |
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- 2022-07-13 CN CN202221790288.3U patent/CN217895384U/en active Active
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