In-situ water ecological purification system for solving discharge port pollution

Abstract

The utility model discloses an in-situ water ecological purification system for solving discharge port pollution, which comprises a blow-off pipe and further comprises a pre-purification area enclosed by an impermeable inner enclosure, the blow-off pipe is communicated with the pre-purification area, and a pre-purification outlet permeable enclosure is arranged on the side wall, opposite to the blow-off pipe, of the impermeable inner enclosure; an outer impermeable enclosure is arranged on the outer side, away from the bank side, of the inner impermeable enclosure, a main purification area is formed by the area between the inner side of the outer impermeable enclosure and the outer side of the inner impermeable enclosure, and the two sides of the outer impermeable enclosure extend to the bank side through the corresponding outer impermeable extension enclosures respectively; the area between the waterproof extension enclosure and the waterproof inner enclosure forms a rear purification area, a main purification outlet permeable enclosure is arranged between the main purification area and the rear purification area, and a rear purification outlet permeable enclosure is arranged on the waterproof extension enclosure. According to the utility model, the sewage at the discharge port is purified in situ, no extra land is occupied, the influence on the environmental situation is small, the construction is convenient, the engineering adaptability is strong, the generalizability is strong, and the application range is wide.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of sewage treatment, specifically relates to a kind of in-situ water ecological purification system for solving outlet pollution. BACKGROUND

[0002] Urban built-up area river bank along outlet is the important rainwater channel of city, through investigation, part of city outlet has a large amount of sewage in dry season into river, pollutes water environment, with pollutant exceeding the containing capacity of water body itself, black and odorous water body forms.

[0003] Urban water body has the characteristics of "black and odorous in water, root in bank, key in outlet, core in pipe network". Urban water body black and odorous and eutrophication caused by water pollutant discharge and overflow along various sewage outlets are more and more serious. Due to the lag of urban pipe network construction, imperfect operation of sewage treatment facilities, and some outlets temporarily do not have the condition of intercepting sewage and pipe, therefore, solving outlet pollutant discharge problem is crucial to water environment protection.

[0004] But due to the discontinuous discharge of outlet domestic sewage, and its limited treatment space, traditional water treatment method is difficult to exert. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of in-situ water ecological purification system for solving outlet pollution.

[0006] To realize the above-mentioned utility model purpose, the technical scheme that the utility model takes is as follows:

[0007] A kind of in-situ water ecological purification system for solving outlet pollution, including sewage pipe, still including the pre-purification area formed by water-tight inner enclosure, sewage pipe is communicated with pre-purification area, and water-tight inner enclosure is opened with pre-purification outlet water-permeable enclosure on the side wall opposite to sewage pipe;Water-tight outer enclosure is arranged on the outer side of water-tight inner enclosure away from bank, and the area between the inner side of water-tight outer enclosure and the outer side of water-tight inner enclosure constitutes main purification area, water-tight outer enclosure both sides respectively extend to bank through corresponding water-tight extension enclosure, and the area between water-tight extension enclosure and water-tight inner enclosure constitutes post-purification area, and main purification outlet water-permeable enclosure is arranged between main purification area and post-purification area, and post-purification outlet water-permeable enclosure is arranged on water-tight extension enclosure.

[0008] Three-dimensional ecological floating bed is arranged in the pre-purification area, filler is arranged in main purification area, main purification area emergent plant is planted on filler, and three-dimensional ecological floating bed and submerged plant are arranged in post-purification area.

[0009] The three-dimensional ecological floating bed comprises an ecological floating body, floating bed emergent plants planted on the ecological floating body, and artificial water grass hung at the lower part of the ecological floating body; the floating body comprises a plurality of PE material floating basin monomers, adjacent floating basin monomers are connected through buckles, the floating body is wrapped with a fishing net, the floating body is connected with a reinforced cement anchor placed at the river bottom through a nylon rope, the floating bed emergent plants are sparganium simplex or yellow flower iris or umbrella grass or canna, the planting density of the floating bed emergent plants is 10-20 plants per square meter, the hanging density of the artificial water grass is 5-15 bundles per square meter, the specific surface area of the artificial water grass is greater than 300 square meters per cubic meter, and the length of the artificial water grass is 1-3 meters.

[0010] The filler comprises a soil layer, a first filler layer, a second filler layer and a supporting layer arranged in sequence from top to bottom, the fillers of the first filler layer and the second filler layer are gravel or pebbles, the particle size of the filler of the first filler layer is 15-25 mm, the particle size of the filler of the second filler layer is 30-60 mm, the supporting layer is a steel plate, and mesh holes are formed in the supporting layer.

[0011] The emergent plants in the main purification area are reeds or cattails, the planting area is 40% of the total area of the main purification area, and the planting density is 10-20 plants per square meter.

[0012] The submerged plants are pondweed, and the planting density of the pondweed is 50-80 plants per square meter, or the submerged plants are Myriophyllum spicatum, and the planting density of the Myriophyllum spicatum is 9-12 clusters per square meter.

[0013] The water-impermeable inner enclosure, the water-impermeable outer enclosure and the water-impermeable extension enclosure are stacked by geotextile bags, the geotextile bags are filled with cohesive soil, and the gaps between the geotextile bags are filled with cohesive soil; the height of the water-impermeable inner enclosure, the water-impermeable outer enclosure and the water-impermeable extension enclosure is 20-30 cm higher than the water level of the river.

[0014] The water-permeable enclosure at the pre-purification outlet, the water-permeable enclosure at the main purification outlet and the water-permeable enclosure at the post-purification outlet are steel grating plates or plastic grating plates, and the water-permeable enclosures are provided with steel pipes at the bottom, and the steel pipes are inserted into the river bottom.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] 1. The utility model discloses a sewage purification method, which adopts in-situ purification of outlet sewage, does not occupy additional land, has little influence on the environment, is convenient to construct, convenient to operate and maintain, and low in cost, and has the characteristics of strong engineering adaptability, strong popularization, and wide application range.

[0017] 2. The utility model discloses a sewage purification method, which is provided with emergent plants in the pre-purification area, the main purification area and the post-purification area, has good landscape effect, can be combined with a city humidity park, has outstanding social benefits, and is suitable for popularization and utilization in cities.

[0018] 3、 The utility model arranges circularly, prolongs hydraulic residence time, improves the purification capacity of the system;

[0019] 4、 The three-dimensional ecological floating bed provided by the utility model can efficiently remove inorganic particles, reduce flow rate and block large-sized pollutants, is beneficial to the growth of subsequent aquatic plants, and reduces the risk of filler blockage, thereby guaranteeing the stability of the purification capacity of the utility model;

[0020] 5、 The utility model is provided with three-stage purification zones, namely a pre-purification zone, a main purification zone and a post-purification zone. The sewage purification capacity is stable, the efficiency is high, and the risk of river and lake pollution is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic view of the utility model;

[0022] Figure 2 is a structural schematic view of the main purification zone.

[0023] In the drawing: 1 - sewage pipe, 21 - pre-purification outlet water-permeable enclosure, 22 - main purification outlet water-permeable enclosure, 23 - post-purification outlet water-permeable enclosure, 31 - water-impermeable inner enclosure, 32 - water-impermeable outer enclosure, 33 - water-impermeable extended enclosure, 4 - pre-purification zone, 5 - main purification zone, 6 - post-purification zone, 7 - three-dimensional ecological floating bed, 8 - main purification zone emergent aquatic plant, 9 - filler, 91 - soil layer, 92 - first filler layer, 93 - second filler layer, 94 - supporting layer, 10 - submerged plant. DETAILED DESCRIPTION

[0024] The utility model will be described in detail below in combination with the drawings and specific embodiments, wherein the specific embodiments and the description are only used to explain the utility model, but not as the limitation of the utility model.

[0025] Embodiment 1:

[0026] In this embodiment, the depth of the river water is 3 m.

[0027] For example, the river water is treated by the three-dimensional ecological floating bed provided by the utility model. Figure 1The utility model provides a kind of in-situ water ecological purification system for solving outlet pollution, including sewage pipe 1, still including by water-tight inner enclosure 31 formed pre-purification area 4, sewage pipe 1 is communicated with pre-purification area 4, and water-tight inner enclosure 31 is set with pre-purification outlet water-permeable enclosure 21 on the side wall opposite to sewage pipe 1;Water-tight outer enclosure 32 of arc distribution is arranged on the outside of water-tight inner enclosure 31 away from bank, and the arc inner side of water-tight inner enclosure 31 faces river bank, the area between the inner side of water-tight outer enclosure 32 and the outside of water-tight inner enclosure 31 constitutes main purification area 5, and water-tight outer enclosure 32 both sides extend to bank by corresponding water-tight extension enclosure 33 respectively, and water-tight extension enclosure 33 is in arc distribution, and the arc inner side of water-tight extension enclosure 33 faces river center, and the area between water-tight extension enclosure 33 and water-tight inner enclosure 31 constitutes post-purification area 6, and water-tight extension enclosure 33 is set with post-purification outlet water-permeable enclosure 23;The setting of pre-purification outlet water-permeable enclosure 21 makes pre-purification area 4 and main purification area 5 realize the communication of water body, and the setting of post-purification outlet water-permeable enclosure 23 can realize the water body communication of post-purification area 6 and river, and sewage is discharged from sewage pipe 1 into pre-purification area 4 to realize primary purification, then enters main purification area 5 to realize secondary purification, then enters post-purification area to realize tertiary purification, and finally is discharged into river.

[0028] In the embodiment, pre-purification area 4 is circular and has a diameter of 8 m. Main purification area 5 has an inner arc length of 13 m, an outer arc length of 22 m, and an interval between the inner arc and the outer arc of 3 m. Post-purification area 6 is in the shape of a horn, has a front-to-back interval of 4 m, and has an arc length of 7 m on both sides.

[0029] Pre-purification area 4 is provided with a three-dimensional ecological floating bed 7, which includes an ecological floating body, floating bed emergent plants planted on the ecological floating body, and artificial water grass hung on the lower part of the ecological floating body. The floating body includes a plurality of floating pot monomers made of PE, adjacent floating pot monomers are connected by buckles, the floating body is wrapped with fishing nets, and the floating body is connected to a reinforced cement anchor placed at the river bottom by a nylon rope, so as to ensure that the floating body moves within a limited range. The artificial water grass floating bed emergent plants are sparrow grass, yellow flower iris, umbrella grass or canna. The planting density of the floating bed emergent plants is 10-20 plants per square meter. The hanging density of the artificial water grass is 5-15 bundles per square meter. The specific surface area of the artificial water grass is greater than 300 square meters per cubic meter. The length of the artificial water grass is 1-3 meters. The three-dimensional ecological floating bed 7 can adsorb particulate matter in sewage, purify the sewage, reduce the flow rate, and block large-sized pollutants.

[0030] In this embodiment, the area of the three-dimensional ecological floating bed 7 is 3 square meters, 6 three-dimensional ecological floating beds are arranged in the pre-purification area, the hanging density of the artificial water grass is 10 bundles per square meter, the specific surface area of the artificial water grass is 350 square meters per cubic meter, the length of the artificial water grass is 2 meters, and the planting density of the floating bed emergent plant is 15 plants per square meter, and the planting area of the floating bed emergent plant is 70% of the area of the three-dimensional ecological floating bed.

[0031] The main purification area 5 is provided with main purification area emergent plants 8 and fillers 9, the fillers 9 include a soil layer 91, a first filler layer 92, a second filler layer 93 and a supporting layer 94 arranged in sequence from top to bottom, the first filler layer 92 and the second filler layer 93 are gravel or pebbles, the particle size of the first filler layer 92 is 15-25 mm, the particle size of the second filler layer 93 is 30-60 mm, the supporting layer 94 is a steel plate, the supporting layer 94 is provided with mesh holes, the main purification area emergent plants 8 are reeds or cattails, the planting area is 40% of the total area of the main purification area 5, the planting density is 10-20 plants per square meter, and the main purification area emergent plants 8 are planted on the soil layer 91.

[0032] The soil layer 91 can provide a good growth environment for the main purification area emergent plants 8, the surfaces of the first filler layer 92 and the second filler layer 93 form a biofilm to purify the wastewater, the heights of the first filler layer 92 and the second filler layer 93 are consistent and can be adjusted in proportion according to the height of the filler around the discharge port, the supporting layer 94 supports the first filler layer 92 and the second filler layer 93, the root system of the main purification area emergent plants 8 has a water quality purification effect, the arrangement of the main purification area emergent plants 8 and the fillers 9 can achieve the pollution removal effect of the subsurface flow wetland in the main purification area 5, and the water-permeable enclosure 22 arranged at both ends of the main purification area 5 can limit the fillers 9 and ensure the smooth accumulation of the fillers 9.

[0033] In this embodiment, the thickness of the soil layer 91 is 0.08 m, the heights of the first filler layer 92 and the second filler layer 93 are both 1.2 m, the thickness of the supporting layer 94 is 5 mm, the mesh holes on the supporting layer 94 have a pore size of 5 mm and an opening rate of 65%, and the planting density of the main purification area emergent plants 8 is 15 plants per square meter.

[0034] The post-purification area 6 is provided with submerged plants 10 and three-dimensional ecological floating beds 7, the submerged plants 10 are pondweed, the planting density of the pondweed is 50-80 plants per square meter, or the submerged plants 10 are Myriophyllum spicatum, the planting density of the Myriophyllum spicatum is 9-12 clusters per square meter, and the submerged plants 10 can further purify the water quality.

[0035] In this embodiment, the planting density of the pondweed is 60 plants per square meter, the planting density of the Myriophyllum spicatum is 10 clusters per square meter, and one three-dimensional ecological floating bed 7 is arranged in each of the post-purification areas 6 located on both sides of the pre-purification area 4.

[0036] The water-impermeable inner enclosure 31, the water-impermeable outer enclosure 32 and the water-impermeable extension enclosure 33 are stacked by geotextile bags, the geotextile bags are filled with cohesive soil, and the gaps between the geotextile bags are filled with cohesive soil; the water permeability coefficient of the geotextile bags is less than 1*10 -7 cm / s, the height of the water-impermeable inner enclosure 31, the water-impermeable outer enclosure 32 and the water-impermeable extension enclosure 33 is 20-30 cm higher than the water level of the river water, and the length and width of a single geotextile bag are 1.2 m and 0.5 m respectively.

[0037] The pre-purification outlet water-permeable enclosure (21), the main purification outlet water-permeable enclosure (22) and the post-purification outlet water-permeable enclosure (23) are spliced by grid plates, the grid plates are steel plates or plastic plates, the thickness of the plates is 3 mm, the aperture of the water-permeable holes on the plates is 2 mm, the open area of the holes is 85%, and the bottom of each of the pre-purification outlet water-permeable enclosure (21), the main purification outlet water-permeable enclosure (22) and the post-purification outlet water-permeable enclosure (23) is provided with a steel pipe for inserting into the soil to fix the position.

[0038] The utility model is suitable for river sewage outlet, lake sewage outlet, park water body sewage outlet and other water body sewage outlets.

[0039] It should be noted that the specific embodiments described in the utility model are only examples for illustrating the spirit of the utility model. The skilled in the art to which the utility model belongs can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the utility model or exceed the range defined by the attached claims.

Claims

1. An in-situ water ecological purification system for solving pollution of outfall, comprising an outfall pipe (1), characterized in that, The pre-purification area (4) is provided with a three-dimensional ecological floating bed (7), the main purification area (5) is provided with a filler (9), and the filler (9) is planted with main purification area emergent plants (8); and the post-purification area (6) is provided with a three-dimensional ecological floating bed (7) and submerged plants (10).

2. The in-situ water ecological purification system for solving mouth pollution according to claim 1, characterized in that, The three-dimensional ecological floating bed (7) comprises an ecological floating body, floating bed emergent plants planted on the ecological floating body, and artificial waterweeds hung at the lower part of the ecological floating body; the floating body comprises a plurality of PE material floating pot monomers, adjacent floating pot monomers are connected through buckles, the floating body is wrapped with a fishing net, the floating body is connected with a reinforced cement anchor placed at the river bottom through a nylon rope, the floating bed emergent plants are swordfish grass or yellow flower iris or umbrella grass or canna, the planting density of the floating bed emergent plants is 10-20 plants per square meter, the hanging density of the artificial waterweeds is 5-15 bundles per square meter, the specific surface area of the artificial waterweeds is greater than 300 square meters per cubic meter, and the length of the artificial waterweeds is 1-3 meters.

3. The in-situ water ecological purification system for solving the pollution of the outfall according to claim 2, characterized in that, The filler (9) comprises, from top to bottom, a soil layer (91), a first filler layer (92), a second filler layer (93) and a supporting layer (94), the fillers of the first filler layer (92) and the second filler layer (93) are gravel or pebbles, the particle size of the filler of the first filler layer (92) is 15-25 mm, the particle size of the filler of the second filler layer (93) is 30-60 mm, the supporting layer (94) is a steel plate, and the supporting layer (94) is provided with mesh holes.

4. The in-situ water ecological purification system for solving mouth pollution according to claim 2, characterized in that, The main purification area emergent plants (8) are reeds or cattails, the planting area is 40% of the total area of the main purification area (5), and the planting density is 10-20 plants per square meter.

5. The in-situ water ecological purification system for solving the pollution of the outfall according to claim 2, characterized in that, The submerged plants (10) are pondweeds, and the planting density of the pondweeds is 50-80 plants per square meter, or the submerged plants (10) are spikemoss fox tailweeds, and the planting density of the spikemoss fox tailweeds is 9-12 clusters per square meter.

6. The in-situ water ecological purification system for solving the pollution of the outfall according to claim 2, characterized in that, The water-impermeable inner enclosure (31), the water-impermeable outer enclosure (32) and the water-impermeable extension enclosure (33) are stacked by geotextile bags, the geotextile bags are filled with cohesive soil, and the gaps between the geotextile bags are filled with cohesive soil; the height of the water-impermeable inner enclosure (31), the water-impermeable outer enclosure (32) and the water-impermeable extension enclosure (33) is 20-30 cm higher than the water level of the river.

7. The in-situ water ecological purification system for solving mouth pollution according to claim 1, characterized in that, ​ 8. The in-situ water ecological purification system for solving mouth pollution according to claim 1, characterized in that, The pre-purification outlet permeable enclosure (21), the main purification outlet permeable enclosure (22) and the post-purification outlet permeable enclosure (23) are steel grating plates or plastic grating plates, and the pre-purification outlet permeable enclosure (21), the main purification outlet permeable enclosure (22) and the post-purification outlet permeable enclosure (23) are provided with steel pipes at the bottom, and the steel pipes are inserted into the river bottom.

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