CN109851175B - An ecological purification artificial canal island system - Google Patents

Abstract

The invention discloses an ecological purification artificial canal island system, which comprises a water inlet purification canal, an artificial purification island and a water storage purification pond, wherein the artificial purification island is positioned between the water inlet purification canal and the water storage purification pond and is separated from the water inlet purification canal and the water storage purification pond respectively through cement-lawn ecological slopes at two sides of the artificial purification island; the cement-lawn ecological slope surface is provided with more than two water pipes from bottom to top, a water source in the water inlet purification channel is introduced into the artificial purification island for purification through the water pipe on one side, and water purified in the artificial purification island is discharged into the water storage purification pool through the water pipe on the other side. The method comprises the steps of firstly absorbing pollutants through plant and ceramsite layers in a water inlet purification canal, purifying a water source, then entering different purification layers of an artificial purification island, further absorbing and absorbing pollutants in a water body, then discharging the pollutants into a water storage purification pond, and removing pollutants such as nitrogen and phosphorus through absorption and absorption actions of plants, zeolite and the like, thereby finally achieving the aim of purifying water quality.

Description

An ecological purification artificial canal island system

Technical field

The invention belongs to the fields of farmland irrigation and drainage systems, non-point source pollution control, and water quality purification, and specifically relates to an ecological purification artificial canal island system.

Background technique

The continuous increase in agricultural inputs such as chemical fertilizers and pesticides to promote the continuous growth of agricultural production has led to the intensification of agricultural non-point source pollution and the deterioration of the agricultural environment. Soil particles, N, P, pesticides, heavy metals, livestock manure and domestic garbage in farmland enter water bodies with rainfall and runoff through farmland surface runoff, farmland drainage and underground seepage, causing the deterioration of water quality. Most research results have shown that the loss of nitrogen and phosphorus in agricultural runoff is one of the important sources of water body eutrophication (BOESCHD.F., et al, 2000; SHARPLEY A.N., et al, 2003; TABUCHIT., et al, 2005 ). Reducing the use and discharge of nitrogen and phosphorus in agricultural production is an important means to slow down eutrophication of water bodies and improve water quality. As a result, domestic and foreign researchers have focused on non-point source pollution control methods to block the circulation of pollutants in farm water and directly purify pollutants during their migration. Our country attaches great importance to the control of non-point pollution, farmland improvement, and farmland water conservancy construction to a new height every year. A large number of artificial wetlands, rainwater and sewage treatment plants have been established in various places, taking into account economic, landscape, ecological and other benefits. However, these purification systems are too simple, do not utilize some existing available resources, and have low water utilization rates.

Contents of the invention

The technical problem to be solved by this invention is to provide an ecological purification artificial canal island system that purifies water sources, removes agricultural non-point source pollution, and solves water source storage problems in view of the deficiencies of the existing technology.

In order to achieve the above-mentioned object of the invention, the technical solutions adopted by the present invention are as follows:

An ecological purification artificial canal island system, characterized by including a water inlet purification canal, an artificial purification island and a water storage purification tank. The artificial purification island is located between the water inlet purification canal and the water storage purification tank. The cement-lawn ecological slope on the side is separated from the water inlet purification channel and the water storage purification tank respectively; the cement-lawn ecological slope is equipped with more than two water pipes from bottom to top, and the inlet water pipes are passed through the water pipes on one side. The water source in the water purification canal is introduced into the artificial purification island for purification, and then the purified water in the artificial purification island is discharged into the water storage purification tank through the water pipe on the other side.

Specifically, the artificial purification island is composed of a bottom clay layer, a lower purification layer, a middle purification layer and an upper water layer from bottom to top; the lower purification layer and the middle purification layer are separated by a horizontal middle cover plate. open;

The lower purification layer is provided with lower double-layer baffles connected end to end. The lower double-layer baffles are arranged at an angle, with the bottom fixed in the bottom clay layer and the top fixed in the middle cover; the middle purification layer is provided with The middle double-layer baffle is connected in sequence from end to end. The middle double-layer baffle is arranged at an angle, the bottom is fixed in the middle cover plate, and the top is fixed with cement;

Stones with a particle size of 10 to 20 cm are filled between the lower double-layer baffle and the bottom clay layer, and ceramsite and zeolite are filled between the lower double-layer baffle and the middle cover plate; the middle double-layer The space between the baffle and the middle cover is filled with stones with a particle size of no more than 10cm. The middle double-layer baffle is filled with planting soil. Above the planting soil is the upper water layer.

The bottom clay layer and the lower double-layer baffle are fixed with a bottom slot. The bottom slot is "V" shaped, with cement piers on both sides, and a T-shaped middle part between the lower double-layer baffle. Shape blocking pile.

The middle cover plate is a reinforced concrete slab with high compressive strength and flexural strength. There are first cover plate slots and second cover plate slots spaced on it. The first cover plate slot is located on the middle cover plate. On the upper surface, the second cover slot is located on the lower surface of the middle cover; wherein, the first cover slot is "W" shaped, used for the bottom of the middle double-layer baffle to be clamped and fixed; the The middle part of the second cover plate slot is hollow to facilitate the circulation of water in the upper and lower parts. The lower surfaces of both sides are provided with inclined grooves for the top of the lower double-layer baffle to be clamped and fixed.

Further, the lower double-layer baffle and the middle double-layer baffle both include a solid reed wood-plastic board in the middle and steel wire mesh on both sides. The bottoms of the lower double-layer baffle and the middle double-layer baffle are provided with through-holes. The through hole is used for water permeability, and there is a nylon mesh at the through hole.

Aquatic crops or landscape plants are planted on the planting soil, which has a high coverage rate, strong purification ability, and high economic and ornamental value; aquatic animals are cultured in the upper water layer, and you can choose milkfish, barracuda, oysters, Polyculture of clams, scallops and other species with shrimps can not only reduce eutrophication of water bodies, but also has high economic value in the province.

The outer side of the water inlet purification channel is a soil slope purification lawn, and the other side is a cement-lawn ecological slope; the bottom of the water inlet purification channel is an upper soil layer for planting purification plants, and the bottom of the upper soil layer is filled with ceramsite. layer.

The outside of the water storage and purification tank is a cement slope, and the other side is a cement-lawn ecological slope; the bottom of the water storage and purification tank is a zeolite-pebble layer, and a plain concrete layer is laid below the zeolite-pebble layer and is connected with the plain concrete. An anti-seepage geomembrane is spaced between the layers; the cement slope is provided with more than two water pipes from bottom to top.

Beneficial effects:

1. The ecological purification artificial canal island system of the present invention first purifies the water source through the absorption of plants in the water purification canal, and at the same time, the ceramsite layer generates a biofilm to absorb pollutants, and then enters the different purification layers of the artificial purification island through water pipes. The water between the layers is infiltrated and mixed, and purification plants, ceramsite-zeolites, stones, stones, etc. further absorb and adsorb pollutants in the water body, and then discharged into the water storage purification tank, where they are further absorbed and adsorbed by plants, zeolites, etc. Remove nitrogen, phosphorus and other pollutants to ultimately achieve the purpose of water purification.

2. The ecological purification artificial canal island system of the present invention can not only absorb nitrogen and phosphorus that are heavily polluted by agricultural non-point sources at multiple levels, and ultimately purify the water quality, but also play a role in water resource accumulation. During the purification process, planting aquatic plants and breeding aquatic animals according to actual conditions can not only remove agricultural non-point source pollution, but also obtain certain economic value, ornamental value, ecological benefit, and create certain agricultural production value. In arid areas, it can achieve efficient water utilization and reduce the waste of water and soil resources.

Description of the drawings

The above and/or other advantages of the present invention will become more clear when the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Figure 1 is a schematic diagram of the overall structure of the ecological purification artificial canal island system.

Figure 2 is a schematic structural diagram of the bottom card slot.

Figure 3 is a schematic structural diagram of the middle cover.

Figures 4a and 4b are respectively schematic structural views of the first cover plate slot and the second cover plate slot on the middle cover plate.

Figure 5 is a schematic structural diagram of the lower double-layer baffle and the middle double-layer baffle.

Detailed ways

The present invention can be better understood from the following examples.

The structures, proportions, sizes, etc. shown in the drawings of the specification are only used to coordinate with the content disclosed in the specification and are for the understanding and reading of those familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore do not In terms of technical substantive significance, any structural modifications, changes in proportions or adjustments in size should still fall within the technical content disclosed in the present invention without affecting the efficacy and purpose achieved by the present invention. within the scope that can be covered. At the same time, terms such as "upper", "lower", "front", "back", and "middle" cited in this specification are only for convenience of description and are not used to limit the scope of the present invention. , changes or adjustments in their relative relationships, provided there is no substantial change in the technical content, shall also be deemed to be within the scope of the present invention.

As shown in Figure 1, the ecological purification artificial canal island system includes a water inlet purification canal 1, an artificial purification island 2 and a water storage purification tank 3. The artificial purification island 2 is located between the water inlet purification canal 1 and the water storage purification tank 3. The cement-turf ecological slope 21 on both sides of the artificial purification island 2 is separated from the water inlet purification channel 1 and the water storage purification tank 3 respectively; the cement-turf ecological slope 21 is provided with more than two water pipes 22 from bottom to top. , the water source in the water inlet purification channel 1 is introduced into the artificial purification island 2 through the water pipe on one side for purification, and then the purified water in the artificial purification island 2 is discharged into the water storage purification tank 3 through the water pipe on the other side. .

The artificial purification island 2 is composed of a bottom clay layer 23, a lower purification layer 24, a middle purification layer 25 and an upper water layer 26 from bottom to top; the lower purification layer 24 and the middle purification layer 25 are connected by a horizontal middle cover plate. 27 separated. The water pipes 22 can be arranged according to different purification layers of the artificial purification island 2, and a row of multiple water pipes is arranged on the same layer.

The lower purification layer 24 is provided with lower double-layer baffles 241 connected end to end. The lower double-layer baffles 241 are arranged at an angle, with the bottom fixed in the bottom clay layer 23 and the top fixed in the middle cover 26; The purification layer 25 is provided with a middle double-layer baffle 251 connected end to end. The middle double-layer baffle 251 is arranged at an angle, with the bottom fixed in the middle cover 27 and the top fixed with cement.

Stones 242 with a particle size of 10 to 20 cm are filled between the lower double-layer baffle 241 and the bottom clay layer 23, and ceramsite and zeolite 243 are filled between the lower double-layer baffle 241 and the middle cover plate 27; The space between the middle double-layer baffle 251 and the middle cover 27 is filled with stones 252 with a particle size not exceeding 10 cm. The upper part of the middle double-layer baffle 251 is filled with planting soil 253. Above the planting soil 253 is the upper water layer 26; planting soil Aquatic crops or landscape plants are planted on the soil 253, which have high coverage, strong purification ability, and high economic and ornamental value; aquatic animals are cultured in the upper water layer 26, and you can choose milkfish, barracuda, oysters, clams, Polyculture of scallops and other species with shrimps can not only reduce eutrophication of water bodies, but also has high economic value in the province.

As shown in Figure 2, the bottom clay layer 23 and the lower double-layer baffle 241 are fixed with a bottom slot 231. The bottom slot 231 is "V" shaped, with cement piers 232 on both sides, and the middle part is located on the lower double-layer baffle. T-shaped retaining piles 233 are provided between the layer baffles 241 for reinforcing the lower double-layer baffles 241.

As shown in Figure 3, the middle cover 27 is provided with first cover slots 271 and second cover slots 272 at intervals. The first cover slot 271 is located on the upper surface of the middle cover 27, and the second cover slot 271 is located on the upper surface of the middle cover 27. The groove 272 is located on the lower surface of the middle cover 27; the first cover slot 271 is "W" shaped, used for the bottom of the middle double-layer baffle 251 to be clamped and fixed; the second cover The middle part of the slot 272 is hollow to facilitate the circulation of water in the upper and lower parts. The lower surfaces of both sides are provided with inclined grooves for the top of the lower double-layer baffle 241 to be clamped and fixed, see Figures 4a and 4b.

As shown in Figure 5, the lower double-layer baffle 241 and the middle double-layer baffle 251 both include a solid reed wood-plastic board 201 in the middle (compressive strength greater than 15MPa, bending strength greater than 15MPa), and both sides. The bottoms of the steel mesh 202, the lower double-layer baffle 241 and the middle double-layer baffle 251 are provided with through holes 203 for water penetration, and the through holes 203 are provided with nylon mesh.

The outside of the water inlet purification channel 1 is a soil slope purification lawn 11, and the other side is a cement-lawn ecological slope 21; the bottom of the water inlet purification channel 1 is an upper soil layer 12, used for planting purification plants, and the bottom of the upper soil layer 12 is filled There is a ceramsite layer 13.

The outside of the water storage and purification tank 3 is a 30cm thick cement slope 31, and the other side is a cement-lawn ecological slope 21; the bottom of the water storage and purification tank 3 is a zeolite-pebble layer 32, and plain concrete is laid below the zeolite-pebble layer 32 Layer 33, and an anti-seepage geomembrane is separated from the plain concrete layer; the cement slope 31 is provided with more than two water pipes 34 from bottom to top.

The purification process of this ecological purification artificial canal island system is first through the absorption of plants in the water purification canal, and at the same time, the ceramsite layer generates a biofilm to absorb pollutants. Then the water in the channel is put into different purification layers of the artificial purification island from different depths through pipelines, and the water between the layers is infiltrated and intermixed. Purification plants, ceramsite-zeolites, pebbles, stones, etc. in the artificial purification island further absorb and adsorb pollutants in the water body, and then discharge them into the water storage purification tank through pipes. The water storage purification tank further removes pollutants such as nitrogen and phosphorus through the absorption and adsorption of plants, zeolites, etc. Before being discharged into farmland, pollutants can be further removed by plants, zeolites, etc. in the tank, ultimately achieving the purpose of water purification. The purification plants in this system can be aquatic crops or landscape plants with economic value, and aquatic animals with economic value can be cultivated in different levels of purified water. Therefore, the present invention can not only remove agricultural non-point source pollution, but also achieve certain economic benefits. value, social (ornamental) value, and ecological benefits. At the same time, it can solve the water source storage problem to some extent in some water-scarce areas, and ultimately utilize water resources efficiently.

The present invention provides an idea and method for an ecological purification artificial canal island system. There are many methods and ways to implement this technical solution. The above are only the preferred embodiments of the present invention. It should be pointed out that for ordinary people in this technical field For those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. All components not specified in this embodiment can be implemented using existing technologies.

Claims (2)

1. The ecological purification artificial canal island system is characterized by comprising a water inlet purification canal (1), an artificial purification island (2) and a water storage purification tank (3), wherein the artificial purification island (2) is positioned between the water inlet purification canal (1) and the water storage purification tank (3), and cement-lawn ecological slopes (21) at two sides of the artificial purification island (2) are respectively separated from the water inlet purification canal (1) and the water storage purification tank (3); the cement-lawn ecological slope (21) is provided with more than two water pipes (22) from bottom to top, a water source in the water inlet purification channel (1) is introduced into the artificial purification island (2) for purification through the water pipe at one side, and water purified in the artificial purification island (2) is discharged into the water storage purification pool (3) through the water pipe at the other side;

the outer side of the water inlet purifying channel (1) is provided with a soil slope surface purifying lawn (11), and the other side is provided with a cement-lawn ecological slope surface (21); the bottom of the water inlet purifying canal (1) is provided with an upper soil layer (12) for planting purifying plants, and a haydite layer (13) is filled below the upper soil layer (12);

the artificial purification island (2) is respectively a bottom clay layer (23), a lower purification layer (24), a middle purification layer (25) and an upper water layer (26) from bottom to top; the lower purifying layer (24) and the middle purifying layer (25) are separated by a horizontal middle cover plate (27);

a lower double-layer baffle (241) which is connected end to end is arranged in the lower purifying layer (24), the lower double-layer baffle (241) is obliquely arranged, the bottom is fixed in the bottom clay layer (23), and the top is fixed in the middle cover plate (27); a middle double-layer baffle plate (251) which is connected end to end in sequence is arranged in the middle purifying layer (25), the middle double-layer baffle plate (251) is obliquely arranged, the bottom is fixed in the middle cover plate (27), and the top is fixed by cement;

stone blocks (242) with the particle size of 10-20 cm are filled between the lower double-layer baffle plate (241) and the bottom clay layer (23), and ceramsite and zeolite (243) are filled between the lower double-layer baffle plate (241) and the middle cover plate (27); stones (252) with particle diameters not exceeding 10cm are filled between the middle double-layer baffle plate (251) and the middle cover plate (27), planting soil (253) is filled above the middle double-layer baffle plate (251), and an upper water layer (26) is arranged above the planting soil (253);

the bottom clay layer (23) and the lower double-layer baffle plate (241) are fixedly provided with bottom clamping grooves (231), the bottom clamping grooves (231) are V-shaped, cement piers (232) are arranged on two sides of the bottom clamping grooves, and T-shaped baffle piles (233) are arranged between the middle part of the bottom clay layer and the lower double-layer baffle plate (241);

a first cover plate clamping groove (271) and a second cover plate clamping groove (272) are formed in the middle cover plate (27) at intervals, the first cover plate clamping groove (271) is formed in the upper surface of the middle cover plate (27), and the second cover plate clamping groove (272) is formed in the lower surface of the middle cover plate (27); the first cover plate clamping groove (271) is W-shaped and is used for clamping and fixing the bottom of the middle double-layer baffle plate (251), the middle of the second cover plate clamping groove (272) is hollowed out, and inclined grooves are formed in the lower surfaces of the two sides and are used for clamping and fixing the top of the lower double-layer baffle plate (241);

the lower double-layer baffle plate (241) and the middle double-layer baffle plate (251) comprise solid reed wood-plastic plates (201) in the middle and steel wire nets (202) on two sides, through holes (203) penetrating through the bottoms of the lower double-layer baffle plate (241) and the middle double-layer baffle plate (251) are formed in the bottoms of the lower double-layer baffle plate (241) and the middle double-layer baffle plate (251), and nylon nets are arranged at the through holes (203);

the outside of the water storage purifying pool (3) is provided with a cement slope (31), and the other side is provided with a cement-lawn ecological slope (21); the bottom of the water storage purifying tank (3) is provided with a zeolite-cobble layer (32), a plain concrete layer (33) is paved below the zeolite-cobble layer (32), and an impermeable geomembrane is arranged between the plain concrete layer and the zeolite-cobble layer; the cement slope (31) is provided with more than two water intake pipes (34) from bottom to top.

2. The ecological purifying artificial canal island system according to claim 1, characterized in that the planting soil (253) is planted with aquatic crops or landscape plants; aquatic animals are cultured in the upper water layer (26).