CN210736329U - A three-dimensional rotating horizontal subsurface artificial wetland device - Google Patents

Abstract

The utility model discloses a three-dimensional horizontal subsurface flow constructed wetland device of gyration belongs to the constructed wetland field, relates to one kind and has higher denitrogenation efficiency, higher unit land area pollutant removal load, multilayer vertical arrangement, the three-dimensional horizontal subsurface flow constructed wetland device that sewage gyration was flowed. The method is characterized in that: the artificial wetland system comprises an upper artificial wetland right unit 1, an upper artificial wetland left unit 2, a middle artificial wetland right unit 3, a middle artificial wetland left unit 4, a lower artificial wetland right unit 5, a lower artificial wetland left unit 6, a left upright post 7, a middle upright post 8 and a right upright post 9; the left unit and the right unit of each layer of artificial wetland are provided with water inlet pipes. The utility model provides a three-dimensional horizontal undercurrent constructed wetland structural style of gyration has that the carbon source distributes balanced, impact load resistant, plant biomass and shows the advantage that increases, area is few, reduces the pipe network construction cost, reduces groundwater pollution risk, fully presents the ecological landscape function.

Description

A three-dimensional rotating horizontal subsurface artificial wetland device

technical field

The invention belongs to the field of constructed wetlands, and in particular relates to a three-dimensional horizontal submerged flow constructed wetland device with multi-layer vertical arrangement and horizontal rotary flow of sewage according to gravity.

Background technique

Constructed wetlands usually refer to wetland systems transformed by artificial strengthening measures, applying the principles of species symbiosis and material recycling in the ecosystem, and in accordance with the principle of structure and function coordination, to promote the physical, chemical and biological effects of sewage on wetland substrates, plants and microorganisms. to be purified.

Constructed wetlands are composed of enclosure structures, substrates, aquatic plants, microorganisms, and sewage. Constructed wetlands are generally divided into surface-flow constructed wetlands and subsurface-flow constructed wetlands according to different ways of distributing water in and out application. According to the internal water flow direction, subsurface constructed wetlands can be divided into horizontal subsurface constructed wetlands and vertical subsurface constructed wetlands. Compared with vertical subsurface constructed wetlands, horizontal subsurface constructed wetlands have both aerobic and anoxic environments, and have better nitrification and reaction conditions. Nitrification performance, so it is often used in the process of sewage denitrification.

Constructed wetland biological treatment technology can effectively degrade and transform various pollutants such as nitrogen, phosphorus, suspended solids, organic matter, heavy metals, etc. By simulating the natural habitat, the artificial wetland system provides ecological landscape and green plants, and provides a habitat for wild animals, thus showing a good ecological restoration function. However, the pollutant removal load of traditional constructed wetlands is small, and a large area of land supply is often required to ensure the scale of wastewater treatment and effluent quality. Due to the large area of constructed wetlands, they are usually forced to be located in urban suburbs far away from population agglomeration areas. Therefore, long-distance sewage transportation increases the construction cost of sewage collection and discharge systems on the one hand, and increases the risk of sewage contamination of groundwater on the other hand. Constructed wetlands are set far away from urban areas, such as considering the reuse of treated water from constructed wetlands, which will double the construction cost of the pipeline network and greatly limit its function as a hydrophilic landscape in the waterfront area. Therefore, improving the pollution removal load per unit land area of constructed wetlands and reducing the area of constructed wetlands are the keys to popularize and develop the biological treatment technology of constructed wetlands and give full play to its environmental, economic and social benefits.

SUMMARY OF THE INVENTION

The present invention is aimed at the above-mentioned problems existing in the existing constructed wetland biological treatment technology, and provides a new type of pollutant removal load that is resistant to impact load, has higher denitrification efficiency, and higher unit land area, thereby reducing its floor space. Horizontal subsurface flow constructed wetland device.

The object of the present invention can be achieved through the following technical solutions.

A three-dimensional rotating horizontal subsurface flow constructed wetland device can be divided into upper, middle and lower layers and two symmetrical units, including the upper constructed wetland right unit on the upper right side, the upper constructed wetland left unit on the upper left side, and the middle artificial wetland on the right side of the middle. The right unit of the wetland, the left unit of the middle constructed wetland on the left side of the middle, the right unit of the lower constructed wetland on the right side of the lower part, the left unit of the lower constructed wetland on the left side of the lower part, the left column, the middle column and the right column between the left and right units of the constructed wetland. The right unit of the upper constructed wetland is a hollow cuboid structure with an upper opening. The upper right water passage hole is arranged on the upper part of the upper right water passage partition plate. The water inlet pipe of the upper right unit is horizontally arranged at the left central part of the left baffle of the upper right unit, the left end of the horizontal short pipe at the upper end of the upper middle connecting pipe of the right unit is connected with the center of the right baffle of the upper right unit, and the water inlet pipe of the middle right unit is arranged horizontally in the middle The center position of the lower part of the right side of the right baffle of the right unit, the left end of the horizontal short pipe at the lower end of the upper middle connecting pipe of the right unit is connected with the upper center of the right baffle of the middle right unit; The center of the left baffle is connected; the water inlet pipe of the lower right unit is horizontally arranged at the lower center of the left side of the left baffle of the lower right unit; the horizontal short pipe at the lower end of the middle and lower connecting pipe of the right unit is connected with the upper left center of the left baffle of the lower right unit ; The left end of the horizontal short pipe of the water outlet pipe of the lower right unit is connected to the right center of the right baffle plate of the lower right unit.

The upper right unit of the constructed wetland is composed of the front baffle of the upper right unit, the rear baffle of the upper right unit, the left baffle of the upper right unit, the right baffle of the upper right unit and the bottom plate of the upper right unit.

The front baffle of the upper right unit, the rear baffle of the upper right unit, the left baffle of the upper right unit, the right baffle of the upper right unit and the bottom plate of the upper right unit are all rectangular flat thin plates.

The upper and right water passage holes are evenly distributed on the upper part of the upper and right water passage baffles, and there are three rows in total. 1/4 of the height. And the clear distance between the adjacent upper and right water passages in each row is 1.5 times its diameter, and the total opening area of the upper and right water passages accounts for about 4% to 6% of the area of the upper and right water passages.

The upper and right water-passing baffles are 5 pieces in total, and the areas between the upper-right water-passing baffles at the left and right ends and the adjacent upper-right unit left baffle and upper-right unit right baffle are respectively the upper and right unit water inlet and water distribution. The length of the upper right unit inlet water distribution area and the upper right unit outlet water distribution area is about 1/10 of the length of the upper constructed wetland right unit. The area between two adjacent upper-right water-passing partitions is the upper-right unit water treatment area. There are 4 upper-right unit water treatment areas in total. The length of a single upper-right unit water treatment area is 1 of the length of the upper-layer constructed wetland right unit. /5.

The upper and middle connecting pipes of the right unit and the middle and lower connecting pipes of the right unit are respectively “]” and “[”-shaped cylindrical hollow pipes with open ends, and their height is 1.0 of the height of the right unit 1 of the upper constructed wetland. times ~ 1.2 times. The upper and middle connecting pipes of the right unit and the upper and lower horizontal sections of the middle and lower connecting pipes of the right unit are of equal length; The short tubes are of equal length. The diameters of various pipes in the present invention are all equal to the water inlet pipe of the upper right unit.

The upper constructed wetland left unit, the middle constructed wetland right unit, the middle constructed wetland left unit, the lower constructed wetland right unit, and the lower constructed wetland left unit have the same box structure and size as the upper constructed wetland right unit, and the upper constructed wetland The right unit of the wetland and the left unit of the upper constructed wetland, the right unit of the middle constructed wetland and the left unit of the middle constructed wetland, and the right unit of the lower constructed wetland and the left unit of the lower constructed wetland respectively constitute the front and rear of the plane formed by the vertical center line of the left column, the middle column and the right column. Symmetrical relationship. The clear distance between the upper constructed wetland right unit and the middle constructed wetland right unit, the middle constructed wetland right unit and the lower constructed wetland right unit, the upper constructed wetland left unit and the middle constructed wetland left unit, the middle constructed wetland left unit and the lower constructed wetland The clear distances between the left units are all equal, and are 1.2 to 1.5 times the height of the constructed wetland unit.

The left column, the middle column and the right column are all square hollow columns, and the three columns are respectively assembled at the left, middle and right ends of the gaps formed between the left and right constructed wetland units on the three floors. The front and rear outer walls of each upright are closely fitted with the rear baffles of each unit. The center distance between adjacent columns is 2/5 of the length of the constructed wetland unit, and the center distance between the left and right columns and the left and right outer walls of the constructed wetland unit respectively is 1/10 of the length of the constructed wetland unit. The left column, the middle column and the right column are provided with triangular supports to support the constructed wetland units on each floor respectively. Each constructed wetland unit is provided with 3 triangular supports, which are respectively closely connected with the one-sided outer wall of the left column, the middle column and the right column. 18 pcs.

Compared with the prior art, the present invention has the following advantages: (1) The carbon source is balanced and the impact load is resistant. Multi-point inflow can ensure that the dissolved oxygen and carbon sources carried in the influent are distributed evenly in the device, so as to achieve a better match between the dissolved oxygen supply and the pollutant load, and thus achieve better nitrification reaction and denitrification. At the same time, it can effectively suppress the impact of changes in influent water quality on the constructed wetland system. (2) Plant biomass increased significantly. Plants play a crucial role in the removal of pollutants from constructed wetlands. The vertical multi-layer design of the present invention changes the inherent mode of single-layer planting of aquatic plants in traditional constructed wetlands, realizes multi-layer accumulation of plant biomass, and is conducive to better exerting the ecological advantages of plants in the removal of pollutants in constructed wetlands . (3) Small footprint. The device of the present invention is a three-dimensional vertical rotary structure, with multiple layers connected in series, which reduces the land occupation area while increasing the pollution load on a unit land area and removing the load. (4) Reduce the cost of pipeline network construction and reduce the risk of groundwater pollution. Using the present invention has the advantage of less floor space, the present invention can be arranged near the pollution source, and the source treatment of sewage can be better realized, which not only reduces the long-distance transportation of the sewage collection pipe network, but also avoids the reuse of pipes. The large-scale laying of the network reduces the construction cost of the pipeline network and also reduces the pollution risk of sewage leakage to groundwater. (5) The ecological landscape function is fully presented. Taking advantage of the characteristics of the invention with less floor space and flexible arrangement, it can be arranged near the residential area, and the environmental and social benefits of the constructed wetland can be fully realized.

Description of drawings

FIG. 1 is a top view of a three-dimensional rotating horizontal subsurface constructed wetland device according to the present invention.

FIG. 2 is a front view of a three-dimensional rotating horizontal subsurface constructed wetland device of the present invention.

3 is a side view of a three-dimensional rotating horizontal subsurface constructed wetland device of the present invention.

Fig. 4 is a sectional view taken along line I-I of Fig. 1 .

FIG. 5 is a sectional view taken along line II-II of FIG. 1 .

FIG. 6 is a large sample view of point A in FIG. 5 .

Detailed ways

The following are specific embodiments of the present invention and the technical solutions of the present invention are further described with reference to the accompanying drawings 1-6, but the present invention is not limited to these embodiments.

The utility model relates to a three-dimensional rotating horizontal subsurface constructed wetland device, which can be divided into upper, middle and lower layers and two symmetrical units. It includes the upper constructed wetland right unit 1 located on the upper right side, the upper constructed wetland left unit 2 located on the upper left side, the middle constructed wetland right unit 3 located on the right side of the middle, and the middle constructed wetland left unit 4 located on the left side of the center. The lower constructed wetland right unit 5 on the lower right side, the lower constructed wetland left unit 6 on the lower left side, the left column 7, the middle column 8, and the right column 9 located between the left and right units of the constructed wetland.

The upper constructed wetland right unit 1 includes an upper right unit front baffle 11, an upper right unit rear baffle 12, an upper right unit left baffle 13, an upper right unit right baffle 14, an upper right unit bottom plate 15, an upper right unit The unit water inlet pipe 16 , the upper and middle connecting pipe 17 of the right unit, and the upper and right unit water-passing baffle 18 .

The upper right unit 1 of the constructed wetland is a hollow cuboid with an upper opening, consisting of the upper right unit front baffle 11, the upper right unit rear baffle 12, the upper right unit left baffle 13, the upper right unit right baffle 14 and the upper right unit The bottom plate 15 is surrounded by walls, the baffle plates and the baffle plates and the bottom plate are tightly connected, and each baffle plate and the bottom plate are rectangular flat thin plates.

The upper right unit water inlet pipe 16 is a cylindrical hollow pipe with open ends at both ends, and is horizontally arranged at the left central part of the left baffle 13 of the upper right unit, and its right end is the same diameter as the center of the left baffle 13 of the upper right unit. The circular holes are tightly connected.

The connecting pipe 17 in the upper middle of the right unit is a cylindrical hollow pipe with open ends of the "]" type, which is composed of two 90° elbows, two horizontal short pipes and a vertical short pipe connection, and its height is 1.0 to 1.2 times the height of the right unit 1 of the upper constructed wetland. The length of the upper and lower horizontal sections of the upper and middle connecting pipes 17 of the right unit is equal, and is 0.5 times the length of the vertical section, and the length of the vertical section is 1 times the height of the right unit 1 of the upper constructed wetland. The left end of the horizontal short pipe at the upper end of the upper-middle connecting pipe 17 of the right unit is tightly connected with the circular opening of the same diameter in the center of the right baffle plate 14 of the upper-right unit.

The upper and right water-passing partitions 18 are rectangular flat thin plates, and there are 5 pieces in total, which are vertically arranged in the right unit 1 of the upper constructed wetland. The upper edge of the upper right water-passing partition 18 is flush with the upper edge of the right unit 1 of the upper constructed wetland. The upper and right unit base plates 15 are all tightly connected. The areas between the upper and right water-passing partitions 18 at the left and right ends and the adjacent upper-right unit left baffles 13 and upper-right unit right baffles 14 are respectively the upper-right unit water inlet water distribution area 101 and the upper right unit water outlet water distribution area 102, the length of the upper right unit inlet water distribution area 101 and the upper right unit outlet water distribution area 102 is about 1/10 of the length of the upper right unit 1 of the constructed wetland. The area between the two adjacent upper and right water-passing partitions 18 is the upper-right unit water treatment area 103, there are four upper-right unit water treatment areas 103 in total, and the length of a single upper-right unit water treatment area 103 is the upper-layer constructed wetland right 1/5 of the length of unit 1. An upper right water passage hole 181 is provided on the upper part of the upper right water passage partition plate 18 .

The upper right water passage hole 181 is a circular hole, which is evenly distributed on the upper part of the upper right water passage baffle 18, with a total of three rows. The center-to-center distance is 1/4 of the height of the upper and right water-passing partitions 18 . And the clear distance between the adjacent upper and right water passage holes 181 in each row is 1.5 times its diameter, and the total opening area of the upper and right water passage holes 181 accounts for about 4% to 6% of the area of the upper and right water passage baffles 18. .

The upper constructed wetland left unit 2, the middle constructed wetland right unit 3, the middle constructed wetland left unit 4, the lower constructed wetland right unit 5, and the lower constructed wetland left unit 6 have the same box structure and size as the upper constructed wetland right unit. 1 is consistent, and the upper constructed wetland right unit 1 and the upper constructed wetland left unit 2, the middle constructed wetland right unit 3 and the middle constructed wetland left unit 4, the lower constructed wetland right unit 5 and the lower constructed wetland left unit 6 are respectively related to the left column 7 The planes formed by the vertical centerline of the center column 8 and the right column 9 constitute a front-to-back symmetrical relationship. Clear distance between upper constructed wetland right unit 1 and middle constructed wetland right unit 3, middle constructed wetland right unit 3 and lower constructed wetland right unit 5, upper constructed wetland left unit 2 and middle constructed wetland left unit 4, middle constructed wetland The clear distance between the left unit 4 and the left unit 6 of the lower constructed wetland is equal, and is 1.2 times to 1.5 times the height of the constructed wetland unit.

The middle-right unit water inlet pipe 36 is a cylindrical hollow pipe with open ends at both ends, and is horizontally arranged at the lower center position on the right side of the middle-right unit right baffle 34, and its left end is the same as the center of the middle-right unit right baffle 34. Diameter circular holes are tightly connected. The distance between the pipe center line of the middle-right unit water inlet pipe 36 and the lower edge of the middle-right unit right baffle 34 is 1/4 of the height of the middle-right unit right baffle 34 .

The horizontal short tube at the lower end of the upper-middle connecting pipe 17 of the right unit is closely connected with the circular opening of the same diameter in the upper center of the right baffle plate 34 of the middle-right unit, and the pipe center line of the horizontal section of the lower end is connected to the upper part of the right baffle plate 34 of the middle-right unit. The distance along the edge is 1/4 of the height of the right baffle 34 of the middle-right unit.

The middle and lower connecting pipe 37 in the right unit is a cylindrical hollow pipe with open ends in the shape of two 90° elbows, two horizontal short pipes and a vertical short pipe connection, and its height is the upper floor. 1.5 to 2 times the height of the right unit 1 of the constructed wetland. The length of the upper and lower horizontal sections of the middle and lower connecting pipes 37 in the right unit is equal, and is 0.5 times the length of the vertical section, and the length of the vertical section is 1 times the height of the right unit 1 of the upper constructed wetland. The right end of the horizontal short tube at the upper end of the middle-lower connecting pipe 37 of the right unit is tightly connected with the opening in the center of the left baffle plate 33 of the middle-right unit.

The lower right unit water inlet pipe 56 is a cylindrical hollow pipe with open ends at both ends, and is horizontally arranged at the lower center position of the left side of the lower right unit left baffle 53, and its right end is arranged in the center of the lower right unit left baffle 53. Circular holes of the same diameter are tightly connected. The distance between the pipe center line of the lower right unit water inlet pipe 56 and the lower edge of the lower right unit left baffle 53 is 1/4 of the height of the lower right unit left baffle 53 .

The horizontal short tube at the lower end of the middle and lower connecting pipe 37 of the right unit is closely connected with the opening in the upper left center of the left baffle 53 of the lower right unit, and the distance between the pipe center line of the horizontal section of the lower end and the upper edge of the left baffle 53 of the lower right unit It is 1/4 of the height of the left baffle 53 of the lower right unit.

The lower right unit water outlet pipe 57 is an "L"-shaped cylindrical hollow pipe with open ends at both ends, and is composed of a 90° elbow, a section of horizontal short pipe and a section of vertical short pipe. The lengths of the horizontal short pipe and the vertical short pipe of the water outlet pipe 57 of the lower right unit are equal. The left end of the horizontal short pipe of the water outlet pipe 57 of the lower right unit is tightly connected with the opening in the center of the right side of the right baffle plate 54 of the lower right unit.

The diameters of various pipes in the present invention are all equal to the water inlet pipe 16 of the upper right unit.

The left column 7, the middle column 8 and the right column 9 are all square hollow columns, and the three columns are respectively assembled at the left, middle and right ends of the gaps formed between the left and right constructed wetland units on the three floors. The front and rear outer walls of each upright are closely fitted with the rear baffles of each unit. The center distance between adjacent columns is 2/5 of the length of the constructed wetland unit, and the center distance between the left column 7 and the right column 9 and the left and right outer walls of the constructed wetland unit respectively is 1/10 of the length of the constructed wetland unit. The tops of the left column 7 , the middle column 8 and the right column 9 are flush with the upper edge of the right unit 1 of the upper constructed wetland. The size of the bottom end of the left column 7 , the middle column 8 and the right column 9 extending from the lower edge of the right unit 5 of the lower constructed wetland is twice the height of the right unit 5 of the lower constructed wetland. The bottom ends of the left column 7, the middle column 8 and the right column 9 are respectively closely connected with the central parts of the left backing plate 71, the middle backing plate 81 and the right backing plate 91. settlement. The left backing plate 71 , the middle backing plate 81 and the right backing plate 91 are all square thin plates, the side length of which is 5 times the side length of the column. The left column 7, the middle column 8 and the right column 9 are provided with triangular supports 789 to support each constructed wetland unit respectively, and each constructed wetland unit is provided with three triangular supports 789, which are respectively connected with the left column 7, the middle column 8 and the right column. 9 The unilateral outer walls are tightly connected, and there are 18 in total.

In addition, the main body of the present invention (the upper constructed wetland right unit 1, the upper constructed wetland left unit 2, the middle constructed wetland right unit 3, the middle constructed wetland left unit 4, the lower constructed wetland right unit 5, and the lower constructed wetland left unit 6) can be 8mm ~ 10mm thick PE, PVC or PPP materials are molded, or welded by 1mm ~ 3mm thick stainless steel sheet metal, left column 7, middle column 8, right column 9, left backing plate 71, middle backing plate 81. Components such as the right backing plate 91 and the triangular support 789 can be made of steel or stainless steel. The length of each constructed wetland unit box is 2000mm~2200mm, the width is 400mm~500mm, and the height is 400mm~500mm. The diameter of the water passage hole 181 is 6 mm˜8 mm. The diameter of the upper right unit water inlet pipe 16 , the middle right unit water inlet pipe 36 , and the lower right unit water inlet pipe 56 are all 100 mm in diameter and 200 mm to 300 mm in length. The horizontal pipe lengths of the upper and middle connecting pipes 17 of the right unit and the middle and lower connecting pipes 37 of the right unit are both 200 mm to 300 mm, and the diameters are both 100 mm. The lengths of the horizontal short pipe and the vertical short pipe of the water outlet pipe 57 of the lower right unit are both 200 mm to 300 mm. The outer sides of the left column 7, the middle column 8 and the right column 9 are all 100mm in length, and the height is between 2700mm and 2900mm. The thickness of the left backing plate 71, the middle backing plate 81, and the right backing plate 91 is 5 mm, and the side length is 500 mm.

The working principle of the present invention is:

Place the place. The invention occupies less area, is suitable for the treatment of people's daily life sewage, and can be placed in places such as streets, residential quarters, river banks and the like. After the sewage is treated by the present invention and reaches a certain effluent quality standard, it can be discharged nearby or reused for flushing toilets, watering roads, washing cars, building water and the like.

Fill the matrix. The matrix provides a microenvironment for the life activities of microorganisms in the constructed wetland, and can also play a role in physical adsorption of certain pollutants. After the assembly of the present invention is completed, the matrix is directly filled in the box of the constructed wetland unit. The filling height of the matrix should be 350~450mm. Depending on the target pollutants to be treated, different types or sizes of substrates or combinations of substrates can be filled, such as water treatment micro-electrolysis iron carbon balls, shale ceramsite, pebbles, zeolite, biochar, etc.

Plant aquatic plants. Plants are planted after the substrate filling is completed. Plants should be planted in the water treatment area, and the plants should preferably choose native varieties with strong vitality and good adaptability to the environment. Appropriate selection of aquatic plants with developed root systems and large biomass is more conducive to the removal of pollutants. After the plant is transplanted to the slow seedling stage, a nutrient solution can be prepared to promote the growth of the plant.

start up. After the plants grow stably, the pretreated sewage can be injected intermittently through the upper right unit water inlet pipe 16 , the middle right unit water inlet pipe 36 , and the lower right unit water inlet pipe 56 until the normal amount of water is fed. At the same time, monitor the water quality of incoming and outgoing water. When the quality of the effluent is stable, the constructed wetland can be considered to have completed the start-up stage. If the sewage inlet pressure cannot be guaranteed to be raised to the upper right unit inlet pipe 16, the middle right unit inlet pipe 36, and the lower right unit inlet pipe 56, an inlet water lift pump needs to be configured to meet the water pressure requirements of the inlet water.

run. Sewage enters the upper right unit inlet water distribution area 101 at the front end of the upper right unit 1 of the upper constructed wetland through the upper right unit inlet pipe 16. When the inlet water level exceeds the height of the upper right water passage hole 181 of the upper right water passage baffle 18, Entering the upper right unit water treatment area 103, the pollutants in the sewage will enter the upper artificial wetland right after passing through the physical, chemical and biological combined action of plants, microorganisms, substrates, etc. in four consecutive upper right unit water treatment areas 103. The upper right unit outlet water distribution area 102 at the end of the unit 1 flows out of the upper constructed wetland right unit 1 after the hydraulic conditions are adjusted by the upper right unit outlet water distribution area 102, and flows into the middle right unit water inlet distribution area through the upper and middle connecting pipe 17 of the right unit 301, and repeat the processing flow in the upper constructed wetland right unit 1 in the middle constructed wetland right unit 3. Similarly, the sewage treated by the right unit 3 of the middle-layer constructed wetland flows into the right unit 5 of the lower-layer constructed wetland through the middle-lower connecting pipe 37 of the right unit. . It should be noted that the water inlet pipe 36 of the middle right unit and the water inlet pipe 56 of the lower right unit can be activated according to the degree of change in the water quality of the influent water, as well as the removal of organic matter from the sewage and the different requirements for carbon sources in the process of denitrification and denitrification. The right unit water inlet pipe 16, the middle right unit water inlet pipe 36 and the lower right unit water inlet pipe 56 are fed simultaneously or separately, so as to balance the pollution load, reasonably distribute the carbon source, and improve the impact load resistance and denitrification efficiency of the system. At the same time, according to different effluent water quality standards, combined with changes in ambient temperature, by adjusting the influent flow and changing the hydraulic retention time, the purpose of changing the pollution load can be achieved, so that the effluent quality can meet the requirements.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which the present invention pertains can make various modifications or additions to the described specific embodiments or substitute in similar manners, but will not deviate from the spirit of the present invention or go beyond the definitions of the appended claims range.

Claims (8)

1. A three-dimensional rotating horizontal underflow constructed wetland device, which can be divided into upper, middle and lower layers and two symmetrical units, including the upper constructed wetland right unit on the upper right side, the upper constructed wetland left unit on the upper left side, and the middle right side unit. The right unit of the middle-level constructed wetland, the left unit of the middle-level constructed wetland on the left side of the middle, the right unit of the lower-level constructed wetland on the right side of the lower part, the left unit of the lower-level constructed wetland on the left side of the lower part, the left column between the left and right units of the constructed wetland, the middle column, the right The vertical column is characterized in that: the right unit of the upper constructed wetland is a hollow cuboid with an upper opening; the upper right water passage hole is arranged on the upper part of the upper right water passage partition; the upper right unit water inlet pipe is horizontally arranged on the left side of the left baffle of the upper right unit The center part; the left end of the horizontal short pipe at the upper end of the upper-middle connecting pipe of the right unit is connected with the center of the right baffle of the upper-right unit; the water inlet pipe of the middle-right unit is horizontally arranged at the center of the lower right side of the right baffle of the middle-right unit; the upper-middle connection of the right unit The left end of the horizontal short pipe at the lower end of the pipe is connected with the upper center of the right baffle of the middle and right unit; the right end of the horizontal short pipe at the upper end of the middle and lower connecting pipe of the right unit is connected with the center of the left baffle of the middle right unit; The center position of the left lower part of the left baffle of the right unit; the horizontal short pipe at the lower end of the lower connecting pipe in the right unit is connected with the upper left center of the left baffle of the lower right unit; the left end of the horizontal short pipe of the water outlet pipe of the lower right unit is connected with the lower right unit The right center connection of the right bezel. 2. The three-dimensional rotating horizontal subsurface constructed wetland device according to claim 1, characterized in that: the upper right unit of the constructed wetland consists of a front baffle of the upper right unit, a rear baffle of the upper right unit, and a left baffle of the upper right unit , the right baffle of the upper right unit and the enclosure of the bottom plate of the upper right unit. 3. The three-dimensional rotary horizontal subsurface constructed wetland device according to claim 2, characterized in that: the front baffle of the upper right unit, the rear baffle of the upper right unit, the left baffle of the upper right unit, and the right baffle of the upper right unit Both the plate and the upper right unit base plate are rectangular flat sheets. 4. The three-dimensional rotary horizontal submerged flow constructed wetland device according to claim 1, wherein the upper right water passage holes are evenly distributed on the upper part of the upper right water passage baffle, there are three rows in total, and the upper right water passage of the upper row The center distance of the water holes from the upper and right water-passing partitions is 1/4 of the height of the upper-right water-passing partitions; and the clear distance between the adjacent upper-right water-passing holes in each row is 1.5 times its diameter. The total opening area of the right water passage hole accounts for about 4% to 6% of the area of the upper right water passage baffle. 5. The three-dimensional rotary horizontal submerged flow constructed wetland device according to claim 1, characterized in that: the upper and right water-passing baffles are 5 in total, and the upper-right water-passing baffles at the left and right ends and the adjacent upper-right unit left and right The area between the baffle and the right baffle of the upper right unit is the upper right unit inlet water distribution area and the upper right unit outlet water distribution area, respectively. The length of the upper right unit inlet water distribution area and the upper right unit outlet water distribution area is approximately 1/10 of the length of the right unit of the wetland; the area between two adjacent upper and right water-passing partitions is the upper right unit water treatment area, there are 4 upper right unit water treatment areas in total, and the length of a single upper right unit water treatment area It is 1/5 of the length of the right unit of the upper constructed wetland. 6. The three-dimensional rotating horizontal subsurface constructed wetland device according to claim 1, wherein the upper and middle connecting pipes of the right unit and the middle and lower connecting pipes of the right unit are respectively "]" type and "[" type two pipes. The height of the cylindrical hollow pipe with open ends is 1.0 to 1.2 times the height of the right unit 1 of the upper constructed wetland; the upper and lower horizontal sections of the upper and middle connecting pipes of the right unit and the middle and lower connecting pipes of the right unit are equal in length; the water outlet pipe of the lower right unit It is an "L"-shaped cylindrical hollow pipe with open ends at both ends; the length of the horizontal short pipe and the vertical short pipe of the water outlet pipe of the lower right unit is equal. 7. The three-dimensional rotating horizontal subsurface constructed wetland device according to claim 1, wherein the left unit of the upper constructed wetland, the right unit of the middle constructed wetland, the left unit of the middle constructed wetland, the right unit of the lower constructed wetland, and the lower constructed wetland The box structure and size of the left unit of the wetland are consistent with the right unit of the upper constructed wetland, and the right unit of the upper constructed wetland and the left unit of the upper constructed wetland, the right unit of the middle constructed wetland and the left unit of the middle constructed wetland, and the right unit of the lower constructed wetland and the lower unit The left unit of the constructed wetland is in a front-to-back symmetrical relationship with respect to the planes formed by the vertical midline of the left column, the middle column and the right column respectively. The clear distance and the clear distance between the left unit of the upper constructed wetland and the left unit of the middle constructed wetland, and the left unit of the middle constructed wetland and the left unit of the lower constructed wetland are all equal, and are 1.2 to 1.5 times the height of the constructed wetland. 8 . The three-dimensional rotary horizontal subsurface constructed wetland device according to claim 1 , wherein the left column, the center column and the right column are all square hollow columns, and the three columns are respectively assembled on the left and right constructed wetland units on three floors. 9 . The left, middle and right ends of the space formed between them, the front and rear outer walls of each upright are closely fitted with the rear baffles of each unit, and the center distance between adjacent uprights is 2/5 of the length of the constructed wetland unit. The center distance between the left and right columns and the left and right outer walls of the constructed wetland unit is 1/10 of the length of the constructed wetland unit. The left column, the middle column and the right column are provided with triangular supports to support each layer of the constructed wetland unit respectively. Each constructed wetland unit has a total of Set up 3 triangular supports, which are closely connected with the left column, the middle column and the unilateral outer wall of the right column, and there are 18 in total.

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