CN215208988U - Ecological net film base clean system of synchronous restoration upper cover water and thermocline water - Google Patents
Ecological net film base clean system of synchronous restoration upper cover water and thermocline water Download PDFInfo
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- CN215208988U CN215208988U CN202120388243.2U CN202120388243U CN215208988U CN 215208988 U CN215208988 U CN 215208988U CN 202120388243 U CN202120388243 U CN 202120388243U CN 215208988 U CN215208988 U CN 215208988U
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Abstract
The utility model discloses an ecological net film base purification system for synchronously repairing overlying water and thermocline water, which comprises a PVC floating frame and a fixing device; a first fiber net is transversely arranged in the middle of the PVC floating frame, and a second fiber net is longitudinally arranged at the lower part of the PVC floating frame; a third fiber net is transversely arranged at the lower part of the second fiber net; benthonic animals are arranged on the third fiber net, and a filling bag is arranged at the lower part of the third fiber net; the fixing device comprises a fir pile and a traction rope; one end of the traction rope is fixed on the fir pile, and the other end of the traction rope is connected with the PVC floating frame. The utility model is used for the promotion and the improvement of river course quality of water have low investment, the technological advantage of good effect, can realize using on a large scale of engineering, have very important realistic meaning to polluting the improvement of river course.
Description
Technical Field
The utility model belongs to the technical field of water environmental control and river ecological remediation, concretely relates to ecological nethike embrane base clean system of covering water and thermocline water on the synchronous restoration.
Background
With the advance of urban development and modernization, the pollution of small water bodies such as river channels and the like is serious, the eutrophication of the water bodies even blackens and smells, and the eutrophication water bodies are characterized in that the biomass of phytoplankton is obviously increased, and even algal bloom is generated, so that the water bodies are turbid, aquatic plants are eliminated and the water quality is deteriorated.
Aquatic plants are important primary producers of natural bodies of water and are a key part of the circulation of materials and energy in bodies of water. The aquatic plants can remarkably reduce the content of the nutritive salt in the water body and maintain the water body clear by absorbing the nutritive salt in the water body, promoting the settlement of the nutritive salt, inhibiting the sediment from releasing the nutritive salt and the like. Meanwhile, the growth of the aquatic plants also needs sufficient light for photosynthesis, the eutrophic water body is turbid, the transparency is reduced, and the aquatic plants cannot grow. Meanwhile, before the aquatic vegetation is recovered, the damage effect of water bottom surge on the vegetation root system is large, and the survival rate of the aquatic plants is low. The restoration technologies such as the ecological floating bed and the like which are generally adopted at present can only restore overlying water, have little purification effect on thermocline and lower-layer water, and how to implement ecological management in water bodies with poor conditions, so that the natural boundary conditions of the water bodies meet the growth requirements of aquatic plants, and the innovation and implementation of the technologies and measures are needed.
The China with the publication number of CN108147543A specially facilitates 2018, 6.12 discloses a novel ecological floating island, which comprises PVC pipes, right-angle elbows, PE plates, a synthetic fiber net, stainless steel wires, aquatic plants and aquatic mollusks, wherein the four PVC pipes are mutually vertically arranged, every two connected PVC pipes are mutually connected through the right-angle elbows, a sealant is filled at the joint of the right-angle elbows and the PVC pipes, the four PVC pipes form a floating frame, the PE plates are fixed in the floating frame, a plurality of micropores are uniformly arranged on the PE plates, hook sleeves are arranged at the two ends of each stainless steel wire, the four stainless steel wires are vertically hung under the right-angle elbows to form a vertical frame, the four stainless steel wires are horizontally hung between the vertical frames to form a transverse frame, the vertical frame, the transverse frame and the floating frame form a rectangular frame of the ecological floating island, and the synthetic fiber net is fixed outside the rectangular frame through a binding tape. This patent application can plant and mollusk as the chinampa of river course improvement, prevents to eat grass carp and destroys the plant roots, can be long-time to quality of water purification, but its structure is more complicated, and the construction cost is big, is unfavorable for the engineering and uses on a large scale.
Disclosure of Invention
In order to overcome the limitation problem in the aspect of the current improvement technical means, the utility model provides a ecological netmembrane membrane base clean system of covering water and thermocline water is restoreed in step, this system is used for the promotion and the improvement of river course quality of water, has the technical advantage of low investment, good effect, can realize using on a large scale of engineering, has very important realistic meaning to the improvement of polluting the river course.
The utility model discloses a realize through following technical scheme:
an ecological net film based purification system for synchronously repairing overlying water and thermocline water comprises a PVC floating frame and a fixing device; a first fiber net is transversely arranged in the middle of the PVC floating frame, and a second fiber net is longitudinally arranged at the lower part of the PVC floating frame; a third fiber net is transversely arranged at the lower part of the second fiber net; benthonic animals are arranged on the third fiber net, and a filling bag is arranged at the lower part of the third fiber net; the fixing device comprises a fir pile and a traction rope; one end of the traction rope is fixed on the fir pile, and the other end of the traction rope is connected with the PVC floating frame.
In the technical scheme, the first fiber net arranged in the middle of the PVC floating frame can be used for cultivating floating-leaf plants, has a certain landscape effect and also has a certain improvement effect on the transparency of overlying water; the second fiber net arranged at the lower part of the PVC floating frame has certain adsorption effect on nutrient salts coated with water and in the thermocline, can be biomembraned to form an aerobic and anoxic micro-habitat, has digestion effect on the nutrient salts in the water body, intercepts suspended substances in the water and improves the transparency of the water layer of the whole section; benthonic animals are thrown into a third fiber net arranged on the lower portion of the second fiber net, certain grazing effect is achieved on settled nutrient salt and the like, deposition of nutrient salt of the substrate is reduced, meanwhile, an overflowing channel is formed in the middle of the third fiber net, migration of aquatic animals and formation of nest-type habitats are facilitated, and development of diversity of the aquatic animals is facilitated; the filler bag arranged below the third fiber net can be used for biofilm formation, can degrade nutrient salt released by the substrate, and reduces the exchange of lower-layer water, thermocline and overlying water nutrient salt, so that the influence on the quality of the overlying water is reduced, algae inhibiting substances can be released, and the risk of algae outbreak in the water body is reduced; the traction rope in the fixing device is provided with a certain flexible amount, so that the water flow fluctuation is facilitated, and the system is prevented from being damaged by impact.
Further, the fir wood pile is 12-15 cm in size.
Furthermore, the haulage rope is the nylon material.
Furthermore, the length of the PVC floating frame is 2-3 m, and the width of the PVC floating frame is 1/4-1/3 river width. The pipe diameter size of the PVC floating frame can be correspondingly adjusted after calculation according to the buoyancy.
Furthermore, the first fiber net and the third fiber net are made of polyethylene, and the mesh size is 5mm multiplied by 5 mm-8 mm multiplied by 8 mm.
Furthermore, the second fiber net is made of carbon fiber, and the mesh size is 1.5mm multiplied by 1.5 mm-4 mm multiplied by 4 mm.
Further, the longitudinal length of the second fiber web is 1/2-2/3 of the water depth, and the width of the second fiber web is the width of the PVC floating frame.
Further, the arrangement distance of the second fiber net is 1/5-1/4 of the width of the PVC floating frame.
Furthermore, the fillers of the filling bag are clinoptilolite and alunite. The filler in the filler bag is composed of clinoptilolite and alunite in a mass ratio of 8: 1-10: 1.
Further, the benthonic animals put on the third fiber net are corbicula fluminea and aerugo snails. The feeding amount of corbicula fluminea and the copper rust snail is 30-40 g/m2、50～60g/m2。
Furthermore, the variety of the floating-leaf plants cultured on the first fiber net is determined according to the corresponding application season, and specifically the watermifoil and the copper cash are.
Further, the arrangement distance of the ecological net film base purification system for synchronously repairing the overlying water and the thermocline water is 20-50 m.
Compared with the prior art, the beneficial effects of the utility model reside in that:
(1) the polyethylene fiber net arranged in the middle of the PVC floating frame can be used for cultivating floating-leaf plants, has a certain landscape effect and also has a certain improvement effect on the transparency of the overlying water;
(2) the carbon fiber net arranged on the lower part of the PVC floating frame has a certain adsorption effect on nutrient salts coated with water and in the thermocline, can be biomembraned to form an aerobic and anoxic microbial environment, has a digestion effect on the nutrient salts in a water body, intercepts suspended substances in the water, improves the transparency of a water layer of the whole section, increases the sunlight permeable area, improves the illumination degree of aquatic plants, enhances the photosynthesis, and further improves the survival rate of the aquatic plants;
3, benthonic animals are put on the polyethylene fiber net arranged at the lower part of the carbon fiber net, so that certain grazing effect is achieved on settled nutrient salt and the like, deposition of nutrient salt of the substrate is reduced, meanwhile, an overflow channel is formed in the middle of the carbon fiber net, migration of aquatic animals and formation of nest-type habitats are facilitated, and development of diversity of the aquatic animals is facilitated;
(4) the stuffing bags arranged below the polyethylene fiber net can be used for biofilm formation, and can degrade nutrient salts released by the substrate, reduce the exchange of lower-layer water, thermocline and overlying water nutrient salts, further reduce the influence on the quality of the overlying water, release algae inhibiting substances and reduce the risk of algae outbreak in the water body;
(5) the traction rope in the fixing device is provided with a certain flexible amount, so that the water flow fluctuation is facilitated, and the system is prevented from being damaged by impact.
Drawings
Fig. 1 is a top view of an ecological net film based purification system for synchronously repairing overlying water and thermocline water according to an embodiment of the present invention.
Fig. 2 is a left view of an ecological net film based purification system for synchronously repairing covering water and thermocline water according to an embodiment of the present invention.
Fig. 3 is a front view of an ecological net film based purification system for synchronously repairing overlying water and thermocline water according to an embodiment of the present invention.
In the figure: 1-fir stake, 2-hauling rope, 3-PVC floating frame, 4-first fiber net, 5-second fiber net, 6-filling bag, 7-benthonic animal, 8-channel, 9-river bottom, 10-third fiber net.
Detailed Description
The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element 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" and "first" 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, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present invention, it is to 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; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Example 1
As shown in fig. 1-3, this embodiment provides an ecological net film based purification system for synchronously repairing overlying water and thermocline water, which mainly comprises a PVC floating frame 3 and a fixing device, wherein a first fiber net 4 is arranged in the middle of the PVC floating frame 3, and a second fiber net 5 is longitudinally arranged at the lower part of the PVC floating frame; a third fiber net 10 and a filler bag 6 are arranged at the lower part of the second fiber net 5; a third fiber net 10 arranged at the lower part of the second fiber net 5 is provided with benthonic animals 7; the fixing device is composed of a cedar pile 1 and a traction rope 2, one end of the cedar pile 1 is fixed at the river bottom 9, and the other end of the cedar pile is fixed with the traction rope 2. The first fiber net 4 arranged in the middle of the PVC floating frame can cultivate floating-leaf plants, has a certain landscape effect and also has a certain improvement effect on the transparency of overlying water; the second fiber net 5 arranged at the lower part of the PVC floating frame has certain adsorption effect on nutrient salts covered with water and a thermocline, can be biomembraned to form an aerobic and anoxic micro-habitat, has digestion effect on the nutrient salts in the water body, intercepts suspended substances in the water and improves the transparency of a water layer of the whole section; benthonic animals are put on the third fiber mesh 10 arranged at the lower part of the second fiber mesh 5, a certain grazing effect is achieved on settled nutrient salt and the like, deposition of the nutrient salt of the substrate is reduced, meanwhile, the overflow channel 8 is formed in the middle of the third fiber mesh 10, migration of aquatic animals and formation of nest-type habitats are facilitated, and development of diversity of the aquatic animals is facilitated; the filling bag 6 arranged below the third fiber net 10 can be used for biofilm formation, can degrade nutrient salts released by the substrate, and reduces the exchange of lower-layer water, thermocline and overlying water nutrient salts, thereby reducing the influence on the quality of the overlying water, releasing algae inhibiting substances and reducing the risk of algae outbreak in the water body; the traction rope in the fixing device is provided with a certain flexible amount, so that the water flow fluctuation is facilitated, and the system is prevented from being damaged by impact.
The ecological net film based purification system for synchronously repairing the overburden water and thermocline water, which is formed by the method, is applied to a river channel with the section width of 17m, the average water depth of 2m and the length of 2.5km in the city of mansion, and the arrangement form is as follows: 1/4 with the width of river channel on both sides, the laying length of 3m, the laying depth of 1.5m, the system laying distance of 20m, the mass ratio of clinoptilolite to alunite of 10:1, and the throwing amount of the corbicula fluminea of benthonic animals of 30g/m2The dosage of the cercospora chalcoglosa is 50g/m2The selected floating-leaf plant is the copper cash. After the ecological net film base purification system is arranged in the river for 4 months, the water quality data of the river begin to change obviously: the ammonia nitrogen in the water is reduced to 0.583mg/L from the previous 2.154mg/L, TN is reduced to 1.12mg/L from 3.56mg/L, the transparency is improved to 110cm from 55cm, the turbidity is reduced to 3.24NTU from 8.72NTU, DO is improved to 2.8mg/L from 0.74mg/L, the nutrient salt concentration of the upper water, the thermocline and the lower water is obviously different, which indicates that the system influences the exchange effect of the nutrient salt of the mixed water layer; the nutrient salt concentration of the upper layer of the substrate shows a decreasing trend, and meanwhile, the increase of the thickness of the substrate layer is obviously smaller than the engineering empirical value; the through holes in the carbon fiber net film form a part of fish nests, and various aquatic animals gather; the coverage of submerged plants at the river bottom is improved to 48 percent from the previous 23 percent.
Example 2
As shown in fig. 1-3, this embodiment provides an ecological net film based purification system for synchronously repairing overlying water and thermocline water, which mainly comprises a PVC floating frame 3 and a fixing device, wherein a first fiber net 4 is arranged in the middle of the PVC floating frame 3, and a second fiber net 5 is longitudinally arranged at the lower part of the PVC floating frame; a third fiber net 10 and a filler bag 6 are arranged at the lower part of the second fiber net 5; a third fiber net 10 arranged at the lower part of the second fiber net 5 is provided with benthonic animals 7; the fixing device is composed of a cedar pile 1 and a traction rope 2, one end of the cedar pile 1 is fixed at the river bottom 9, and the other end of the cedar pile is fixed with the traction rope 2. The first fiber net 4 arranged in the middle of the PVC floating frame can cultivate floating-leaf plants, has a certain landscape effect and also has a certain improvement effect on the transparency of overlying water; the second fiber net 5 arranged at the lower part of the PVC floating frame has certain adsorption effect on nutrient salts covered with water and a thermocline, can be biomembraned to form an aerobic and anoxic micro-habitat, has digestion effect on the nutrient salts in the water body, intercepts suspended substances in the water and improves the transparency of a water layer of the whole section; benthonic animals are put on the third fiber mesh 10 arranged at the lower part of the second fiber mesh 5, a certain grazing effect is achieved on settled nutrient salt and the like, deposition of the nutrient salt of the substrate is reduced, meanwhile, the overflow channel 8 is formed in the middle of the third fiber mesh 10, migration of aquatic animals and formation of nest-type habitats are facilitated, and development of diversity of the aquatic animals is facilitated; the filling bag 6 arranged below the third fiber net 10 can be used for biofilm formation, can degrade nutrient salts released by the substrate, and reduces the exchange of lower-layer water, thermocline and overlying water nutrient salts, thereby reducing the influence on the quality of the overlying water, releasing algae inhibiting substances and reducing the risk of algae outbreak in the water body; the traction rope in the fixing device is provided with a certain flexible amount, so that the water flow fluctuation is facilitated, and the system is prevented from being damaged by impact.
The ecological net film base purification system for synchronously repairing the overlying water and thermocline water, which is formed by the method, is applied to a river channel with a certain section width of 10m, an average water depth of 1.8m and a length of 1.5km in a metropolis, and the arrangement form is as follows: 1/3 with river channel width as one side, 2m in length, 1.2m in depth, 30m in system arrangement distance, 8:1 of clinoptilolite to alunite in mass ratio, and 40g/m of corbicula fluminea as benthonic animal2The putting amount of the cercospora chalcoglosa is 60g/m2The selected floating-leaf plant is the watermifoil myriophyllum. After the ecological net film base purification system is arranged in the river for 5 months, the water quality data of the river begin to obviously change: the ammonia nitrogen in the water is reduced to 1.983mg/L from 4.154mg/L, TN is reduced to 3.12mg/L from 5.56mg/L, the transparency is improved to 100cm from 35cm, the turbidity is reduced to 6.24NTU from 12.72NTU, DO is improved to 2.5mg/L from 0.64mg/L, and the water on the upper layer, the thermocline layer and the lower layer isThe concentration of the nutrient salt shows difference, which indicates that the system influences the exchange effect of the nutrient salt in the mixed water layer; the nutrient salt concentration of the upper layer of the substrate shows a decreasing trend, and meanwhile, the increase of the thickness of the substrate layer is obviously smaller than the engineering empirical value; the coverage of submerged plants on the river bottom is improved to 50 percent from the previous 13 percent.
The invention has been described in detail hereinabove with reference to specific exemplary embodiments thereof. It will, however, be understood that various modifications and changes may be made without departing from the scope of the invention as defined in the appended claims. The detailed description and drawings are to be regarded as illustrative rather than restrictive, and any such modifications and variations are intended to be included within the scope of the present invention as described herein. Furthermore, the background is intended to be illustrative of the state of the art as developed and the meaning of the present technology and is not intended to limit the scope of the invention or the application and field of application of the invention.
More specifically, although exemplary embodiments of the invention have been described herein, the invention is not limited to these embodiments, but includes any and all embodiments having modifications, omissions, combinations of the various embodiments, adaptations and/or alterations as would be appreciated by those in the art based on the foregoing detailed description. The limitations in the claims are to be interpreted broadly based the language employed in the claims and not limited to examples described in the foregoing detailed description or during the prosecution of the application, which examples are to be construed as non-exclusive. Any steps recited in any method or process claims may be executed in any order and are not limited to the order presented in the claims. The scope of the invention should, therefore, be determined only by the appended claims and their legal equivalents, rather than by the descriptions and examples given above.
Claims (10)
1. An ecological net film based purification system for synchronously repairing overlying water and thermocline water is characterized by comprising a PVC floating frame and a fixing device; a first fiber net is transversely arranged in the middle of the PVC floating frame, and a second fiber net is longitudinally arranged at the lower part of the PVC floating frame; a third fiber net is transversely arranged at the lower part of the second fiber net; benthonic animals are arranged on the third fiber net, and a filling bag is arranged at the lower part of the third fiber net; the fixing device comprises a fir pile and a traction rope; one end of the traction rope is fixed on the fir pile, and the other end of the traction rope is connected with the PVC floating frame.
2. The ecological net film based purification system for synchronously repairing overlying water and thermocline water as claimed in claim 1, wherein the fir-wood pile has a size of Φ 12-15 cm.
3. The ecological net film based purification system for synchronously repairing overburden water and thermocline water as claimed in claim 1, wherein said hauling cable is made of nylon.
4. The ecological net film based purification system for synchronously repairing the overburden water and the thermocline water as claimed in claim 1, wherein the length of the PVC floating frame is 2-3 m, and the width of the PVC floating frame is 1/4-1/3.
5. The ecological net film based purification system for synchronously repairing overburden water and thermocline water as claimed in claim 1, wherein said first fiber net and said third fiber net are made of polyethylene, and the mesh size is 5mm x 5mm to 8mm x 8 mm.
6. The ecological net film based purification system for synchronously repairing overburden water and thermocline water as claimed in claim 1, wherein said second fiber net is made of carbon fiber, and the mesh size is 1.5mm x 1.5mm to 4mm x 4 mm.
7. The ecological net film based purification system for synchronously repairing the overburden water and the thermocline water as claimed in claim 1, wherein the longitudinal length of the second fiber net is 1/2-2/3 of the water depth, and the width of the second fiber net is the width of a PVC floating frame.
8. The ecological net film based purification system for synchronously repairing the overburden water and the thermocline water as claimed in claim 1, wherein the arrangement interval of the second fiber net is 1/5-1/4 of the width of a PVC floating frame.
9. The ecological net film based purification system for synchronously repairing overburden water and thermocline water as claimed in claim 1, wherein fillers of the filler bag are clinoptilolite and alunite.
10. The ecological net film based purification system for synchronously repairing overlying water and thermocline water according to claim 1, wherein the benthonic animals thrown on the third fiber net are corbicula fluminea and cercospora cuprina.
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