CN110510749A - A three-dimensional rotary horizontal submerged flow artificial wetland device - Google Patents

Abstract

The invention discloses a three-dimensional rotary horizontal submerged flow artificial wetland device, which belongs to the field of artificial wetlands and relates to a multi-layer vertically arranged sewage rotary flow device with high denitrification efficiency and high pollutant removal load per unit land area. The three-dimensional horizontal subsurface flow constructed wetland device. It is characterized in that it includes 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, the lower constructed wetland left unit 6, and the left column 7 , middle column 8, right column 9; the left and right units of each constructed wetland are equipped with water inlet pipes. The invention provides a three-dimensional rotary horizontal subsurface flow constructed wetland structure, which has the advantages of balanced carbon source distribution, impact load resistance, significant increase in plant biomass, small footprint, reduced pipeline network construction costs, reduced groundwater pollution risks, and fully presents an ecological landscape. Advantages of function.

Description

A three-dimensional rotary horizontal submerged flow artificial wetland device

technical field

The invention belongs to the field of constructed wetlands, and in particular relates to a three-dimensional and horizontal subsurface flow constructed wetland device in which multi-layers are vertically arranged and sewage flows horizontally according to gravity.

Background technique

Constructed wetlands usually refer to the wetland system transformed by artificial enhancement 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 the substrate, plants and microorganisms in the wetland Get purified.

Constructed wetlands are composed of enclosure structures, substrates, aquatic plants, microorganisms, sewage and other parts. Constructed wetlands are generally divided into surface flow constructed wetlands and subsurface flow constructed wetlands according to the different ways of water distribution in and out of the water. Among them, subsurface flow constructed wetlands have been widely recognized because of their good operating environment and high pollutant purification efficiency. application. Subsurface flow constructed wetlands can be divided into horizontal subsurface flow constructed wetlands and vertical subsurface flow constructed wetlands according to the direction of internal water flow. Compared with vertical subsurface flow constructed wetlands, horizontal subsurface flow constructed wetlands have both aerobic and anoxic environments, and have better nitrification and reaction. 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, and heavy metals. By simulating the natural habitat, the constructed 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 the quality of effluent water. Due to the large area occupied by constructed wetlands, they are usually forced to be located in the suburbs of cities far away from population agglomerations. Therefore, long-distance sewage transportation, on the one hand, increases the construction cost of sewage collection and discharge systems, and on the other hand, increases the risk of sewage polluting groundwater. If constructed wetlands are set far away from urban areas, if consideration is given to the reuse of treated water in constructed wetlands, the construction cost of the pipe network will increase exponentially, and its function as a hydrophilic landscape in the waterfront area will be greatly restricted. Therefore, increasing the pollution removal load per unit land area of constructed wetlands and reducing the occupied area of constructed wetlands is the key to popularize and develop constructed wetland biological treatment technology and give full play to its environmental, economic and social benefits.

Contents of the invention

The present invention is aimed at the above-mentioned problems existing in the existing artificial wetland biological treatment technology, and provides a new type of impact load resistance, high denitrification efficiency, and high pollutant removal load per unit land area, thereby reducing its occupied area. Horizontal subsurface flow artificial wetland device.

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

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

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

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 rectangular planar thin plates.

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

There are 5 pieces of upper right water-passing baffles, and the areas between the upper right water-passing baffles at the left and right ends and the adjacent upper right unit left baffles and upper right unit right baffles are the water inlet and distribution of the upper right unit respectively. The length of the area and the outlet water distribution area of the upper right unit, the water inlet distribution area of the upper right unit and the outlet water distribution area of the upper right unit are about 1/10 of the length of the right unit of the upper constructed wetland. The area between two adjacent upper right water barriers 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 right unit length of the upper constructed wetland. /5.

The upper middle connecting pipe of the right unit and the middle and lower connecting pipe of the right unit are respectively "]" type and "[" type cylindrical hollow pipes with both ends open, 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 equal in length; the outlet pipe of the lower right unit is an "L"-shaped cylindrical hollow pipe with both ends open; the outlet pipe of the lower right unit has a short horizontal pipe and a vertical Short tubes are equal in length. The diameters of various pipelines in the present invention are all equal to the upper right unit water inlet pipe.

The box structure and size of 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 are all consistent with 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, the right unit of the lower constructed wetland and the left unit of the lower constructed wetland respectively about the left column, the middle column, and the vertical center line of the right column form the front and rear symmetrical relationship. The net distance between the right unit of the upper constructed wetland and the right unit of the middle constructed wetland, the right unit of the middle constructed wetland and the right unit of the lower constructed wetland, the left unit of the upper constructed wetland and the left unit of the middle constructed wetland, the left unit of the middle constructed wetland and the lower constructed wetland The clear distances between the left units are equal, and are 1.2 to 1.5 times the height of the constructed wetland units.

The left upright, middle upright and right upright are all square hollow uprights, and the three uprights are respectively assembled at the left end, middle part and right end of the gap formed between the left and right constructed wetland units on the third floor. The front and rear outer walls of each column are closely attached to 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 is 1/10 of the length of the constructed wetland unit. The left column, the middle column and the right column are equipped with triangular supports to respectively support each layer of constructed wetland unit. Each constructed wetland unit is provided with 3 triangular supports, which are closely connected with the left column, middle column and right column. 18 pcs.

Compared with the prior art, the present invention has the following advantages: (1) Balanced carbon source and impact load resistance. Multi-point water inflow can ensure that the dissolved oxygen and carbon source carried in the influent water are distributed more evenly in the device, so as to achieve a better match between the dissolved oxygen supply and the pollutant load, thus achieving better nitrification and denitrification response; at the same time, it can effectively stabilize the impact of influent water quality changes on the constructed wetland system. (2) Plant biomass increased significantly. Plants play an extremely critical role in the removal of pollutants in 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 the 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, and multi-layers are connected in series, which reduces the land occupation area while increasing the pollution load and removal load per unit land area. (4) Reduce the cost of pipeline network construction and reduce the risk of groundwater pollution. Utilizing the advantages of the present invention having less floor area, the present invention can be arranged near the pollution source, and can better realize the source treatment of sewage, which not only reduces the long-distance transportation of sewage collection pipe network, but also avoids the need for recycling pipes. The large-scale laying of the network not only reduces the construction cost of the pipe network, but also reduces the risk of groundwater pollution caused by sewage leakage. (5) Fully present the ecological landscape function. Utilizing the features of less land occupation and flexible arrangement, the invention can be arranged near the residential area, and can fully realize the environmental and social benefits of the constructed wetland.

Description of drawings

Fig. 1 is a top view of a three-dimensional rotary horizontal underflow constructed wetland device of the present invention.

Fig. 2 is a front view of a three-dimensional rotary horizontal submerged flow constructed wetland device of the present invention.

Fig. 3 is a side view of a three-dimensional rotary horizontal submerged flow constructed wetland device according to the present invention.

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

Fig. 5 is a sectional view of II-II in Fig. 1 .

Fig. 6 is a large sample diagram of point A in Fig. 5 .

Detailed ways

The following are specific embodiments of the present invention and in conjunction with accompanying drawings 1-6, further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

A three-dimensional rotary horizontal underflow artificial wetland device can be divided into upper, middle and lower layers and two symmetrical units. Including the upper constructed wetland right unit 1 located on the right side of the upper part, the upper constructed wetland left unit 2 located on the left side of the upper part, the middle constructed wetland right unit 3 located on the right side of the middle part, the middle constructed wetland left unit 4 located on the left side of the middle part, and the The lower constructed wetland right unit 5 on the right side of the lower part, the lower constructed wetland left unit 6 located on the left side of the lower part, 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 Unit water inlet pipe 16, upper middle connecting pipe 17 of the right unit, and water partition 18 of the upper right unit.

The right unit 1 of the upper artificial wetland is a hollow cuboid with an upper opening. The base plate 15 is enclosed and formed, and each baffle plate and between each baffle plate and the base plate are closely connected, and each baffle plate and the base plate are rectangular planar thin plates.

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

The upper middle connecting pipe 17 of the right unit is a "]" type cylindrical hollow pipe with both ends open, 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 middle connecting pipe 17 of the right unit is equal, and is 0.5 times of the length of the vertical section, and the length of the vertical section is 1 time of the height of the right unit 1 of the upper constructed wetland. On the right unit, the left end of the connecting pipe 17 upper end horizontal short pipe is tightly connected with the same diameter circular opening at the right unit right baffle plate 14 center on the right unit.

The upper right water barrier 18 is a rectangular planar thin plate, 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 barrier 18 is flush with the upper edge of the upper constructed wetland right unit 1, and each upper right water barrier 18 is connected with the upper right unit front baffle plate 11, the upper right unit rear baffle plate 12, The upper right unit bottom plate 15 is all closely connected. The areas between the upper right water partition 18 at the left and right ends and the adjacent upper right unit left baffle 13 and upper right unit right baffle 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 water inlet and distribution area 101 of the upper right unit and the water distribution area 102 of the upper right unit is about 1/10 of the length of the right unit 1 of the upper constructed wetland. The area between two adjacent upper right water-passing partitions 18 is the upper right unit water treatment area 103. There are 4 upper right unit water treatment areas 103 in total. 1/5 of the length of unit 1. An upper right water passage hole 181 is arranged on the upper part of the upper right water passage baffle plate 18 .

The upper right water passage hole 181 is a circular hole, evenly distributed on the upper part of the upper right water passage baffle 18, and there are three rows in total. The center-to-center distance is 1/4 of the upper right water dividing plate 18 heights. And the net distance between each row of adjacent upper right water passage holes 181 is 1.5 times of its diameter, and the total opening area of the upper right water passage holes 181 accounts for about 4%~6% of the area of the upper right water passage baffle 18 .

The box structure and size of 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 are the same as those of the upper constructed wetland right unit 1 is consistent, and the right unit 1 of the upper constructed wetland and the left unit 2 of the upper constructed wetland, the right unit 3 of the middle constructed wetland and the left unit 4 of the middle constructed wetland, the right unit 5 of the lower constructed wetland and the left unit 6 of the lower constructed wetland are respectively about the left column 7 , middle column 8, the face that right column 9 vertical midlines form constitute front-rear symmetry relationship. The clear distance between the right unit 1 of the upper constructed wetland and the right unit 3 of the middle constructed wetland, the right unit 3 of the middle constructed wetland and the right unit 5 of the lower constructed wetland, and the left unit 2 of the upper constructed wetland and the left unit 4 of the middle constructed wetland, and the 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 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 both ends open, which is horizontally arranged at the lower center on the right side of the right baffle plate 34 of the middle right unit, and its left end is the same as that set at the center of the right baffle plate 34 of the middle right unit. diameter circular holes tightly connected. The distance between the pipe centerline of the middle right unit water inlet pipe 36 and the lower edge of the middle right unit right baffle plate 34 is 1/4 of the middle right unit right baffle plate 34 height.

The horizontal short pipe 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 at the center of the upper center of the right baffle plate 34 of the middle right unit, and the center line of the pipe at the lower end horizontal section is connected with the right baffle plate 34 of the middle right unit. The distance along is 1/4 of the right baffle plate 34 height of the middle right unit.

The middle and lower connecting pipe 37 of the right unit is a cylindrical hollow pipe with two ends open in the form of "[", which is composed of two 90° elbows, two sections of horizontal short pipes and a section of vertical short pipes, and its height is the upper level. 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 pipe 37 of the right unit is equal, and is 0.5 times of the length of the vertical section, and the length of the vertical section is 1 time of the height of the right unit 1 of the upper constructed wetland. The right end of the lower connecting pipe 37 upper end horizontal short pipe in the right unit is closely connected with the opening in the center of the left baffle plate 33 of the right unit.

The lower right unit water inlet pipe 56 is a cylindrical hollow pipe with both ends open, which is horizontally arranged at the center of the left lower part of the left baffle plate 53 of the lower right unit, and its right end is set at the center of the left baffle plate 53 of the lower right unit. Circular holes of the same diameter are closely connected. The distance between the pipe centerline of the lower right unit water inlet pipe 56 and the lower edge of the lower right unit left baffle plate 53 is 1/4 of the lower right unit left baffle plate 53 height.

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 at the center of the upper left side of the left baffle plate 53 of the lower right unit, and the distance between the center line of the horizontal section of the lower end and the upper edge of the left baffle plate 53 of the lower right unit Be 1/4 of the height of the left baffle plate 53 of the lower right unit.

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

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

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 end, middle part and right end of the gap formed between the left and right constructed wetland units on the third floor. The front and rear outer walls of each column are closely attached to 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 is 1/10 of the length of the constructed wetland unit. The tops of the left column 7, the center column 8 and the right column 9 are flush with the upper edge of the upper right unit 1 of the constructed wetland. The bottom of the left column 7, the middle column 8 and the right column 9 extends out of the lower edge of the right unit 5 of the lower constructed wetland, and the size of the lower edge is twice the height of the right unit 5 of the lower constructed wetland. The bottoms of the left column 7, the middle column 8 and the right column 9 are closely connected with the central parts of the left backing plate 71, the middle backing plate 81, and the right backing plate 91 respectively, and its function is to disperse the pressure transmitted by each column and prevent each column from settlement. Described left backing plate 71, middle backing plate 81, right backing plate 91 are square thin plates, and its side length is 5 times of column side length. The left column 7, the middle column 8 and the right column 9 are provided with triangular supports 789 to respectively support each layer of constructed wetland units, and each constructed wetland unit is provided with 3 triangular supports 789, which are respectively connected with the left column 7, the middle column 8 and the right column. 9 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 composed of 8mm ~ 10mm thick PE, PVC or PPP material molded, can also be made of 1mm ~ 3mm thick stainless steel sheet metal welding, left column 7, middle column 8, right column 9, left backing plate 71, middle backing plate 81, parts such as right backing plate 91, triangular support 789 can be made by 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 hole 181 is 6mm-8mm. 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 all have a diameter of 100 mm and a length of 200 mm to 300 mm. The length of the horizontal section tubes of the upper middle connecting pipe 17 of the right unit and the lower connecting pipe 37 of the right unit is 200mm ~ 300mm, and the diameter is 100mm. The length of the horizontal short pipe and the vertical short pipe of the lower right unit outlet pipe 57 is 200mm-300mm. The outer length of the left column 7, the middle column 8 and the right column 9 is 100mm, and the height is between 2700mm ~ 2900mm. Left backing plate 71, middle backing plate 81, right backing plate 91 thickness are 5mm, and side length is 500mm.

The working principle of the present invention is:

Placement. The invention occupies a small area, is suitable for treating sewage in people's daily life, and can be placed in streets, residential areas, river banks and other places. After the sewage is treated by the present invention to reach a certain effluent water quality standard, it can be discharged nearby or reused for flushing toilets, watering roads, washing cars, building water, etc.

Fill the matrix. The matrix provides a microenvironment for the life activities of microorganisms in the constructed wetland, and can also physically adsorb 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 is preferably 350~450mm. Depending on the target pollutants to be treated, different types or sizes of substrates or substrate combinations can be filled, such as water treatment micro-electrolytic iron carbon balls, shale ceramsite, pebbles, zeolites, biochar, etc.

Plant aquatic plants. After the matrix filling is completed, plant the plants. Plants should be planted in the water treatment area, and the plants should be selected from native species with strong vitality and good adaptability to the environment. Appropriate selection of aquatic plants with well-developed root system and large biomass is more conducive to the removal of pollutants. After the plants are transplanted to the slow seedling stage, a nutrient solution can be prepared to promote the growth of the plants.

start up. After the plant grows stably, the sewage after pretreatment can be injected intermittently by 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 water intake according to the normal water quantity. Simultaneously monitor the quality of influent and effluent water. After the effluent water quality is stable, it can be considered that the constructed wetland has completed the start-up phase. If the water inlet pressure of sewage cannot be guaranteed to rise to the water inlet pipe 16 of the upper right unit, the water inlet pipe 36 of the middle right unit, and the water inlet pipe 56 of the lower right unit, a water inlet lifting pump needs to be configured to meet the water pressure requirements of the water inlet.

run. Sewage enters the upper right unit water distribution area 101 at the front end of the upper right unit 1 through the upper right unit water inlet pipe 16. Entering the upper right unit water treatment area 103, the pollutants in the sewage enter the upper right constructed wetland after passing through four continuous upper right unit water treatment areas 103 through the combined physical, chemical and biological actions of plants, microorganisms, substrates, etc. The water distribution area 102 of the upper right unit at the end of unit 1, after the hydraulic conditions are adjusted through the water distribution area 102 of the upper right unit, flows out of the right unit 1 of the upper constructed wetland, and flows into the water inlet and distribution area of the middle right unit through the upper middle connecting pipe 17 of the right unit 301, and repeat the processing flow in the right unit 1 of the upper constructed wetland in the right unit 3 of the middle constructed wetland. Similarly, the sewage treated by the right unit 3 of the middle-level constructed wetland flows into the right unit 5 of the lower constructed wetland through the middle and lower connecting pipe 37 of the right unit, and after being treated by the right unit 5 of the lower constructed wetland, it is discharged from the system through the outlet pipe 57 of the lower right unit . It should be noted that the middle right unit water inlet pipe 36 and the lower right unit water inlet pipe 56 can be used according to the change degree of the influent water quality and the different requirements for carbon sources in the process of removing organic matter from sewage and denitrification and denitrification, and the water inlet pipe 56 of the lower right unit can be used from the upper The water inlet pipe 16 of the right unit, the water inlet pipe 36 of the middle right unit and the water inlet pipe 56 of the lower right unit are fed simultaneously or separately, so as to balance the pollution load, rationally distribute carbon sources, and improve the impact load resistance and denitrification performance of the system. At the same time, according to the different effluent water quality standards, combined with the change of ambient temperature, the purpose of changing the pollution load can be achieved by adjusting the influent flow rate and changing the hydraulic retention time, so that the effluent water quality can meet the requirements.

The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the present invention or go beyond the definition of the appended claims range.

Claims (8)

1. A three-dimensional rotary horizontal subsurface flow constructed wetland device, which can be divided into upper, middle and lower layers, and two symmetrical units, including the upper right constructed wetland unit on the right side of the upper part, the left upper constructed wetland unit on the left side of the upper part, and the right constructed wetland unit in the middle part. The right unit of the middle constructed 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 between the left and right units of the constructed wetland, the middle column, the right The column is characterized in that: the right unit of the upper artificial wetland is a hollow cuboid with an upper opening; the upper right water hole is set on the upper right water barrier; the upper right unit water inlet pipe is horizontally set on the left side of the upper right unit left baffle Central part; the left end of the upper horizontal short pipe 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 left end of the horizontal short pipe at the lower end of the pipe is connected to the upper center of the right baffle of the middle right unit; the right end of the upper horizontal short pipe of the middle and lower connecting pipe of the right unit is connected to the center of the left baffle of the middle right unit; the water inlet pipe of the lower right unit is horizontally arranged on the lower 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 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 outlet pipe of the lower right unit is connected with the lower right unit The right center connection of the right fender. 2. The three-dimensional rotary horizontal submerged flow constructed wetland device according to claim 1, characterized in that: the right unit of the upper constructed wetland consists of the front baffle of the upper right unit, the rear baffle of the upper right unit, and the left baffle of the upper right unit 1. The upper right unit right baffle plate and the upper right unit bottom plate enclosure are composed. 3. The three-dimensional rotary horizontal underflow artificial 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 bottom plate of the upper right unit are rectangular planar thin plates. 4. The three-dimensional rotary horizontal submerged flow artificial wetland device according to claim 1, characterized in that: the upper right water holes are evenly distributed on the upper part of the upper right water partition, there are three rows in total, and the upper right water hole in the upper row The center distance between the water hole and the top of the upper right water separator is 1/4 of the height of the upper right water separator; and the clear distance between each row of adjacent upper right water holes is 1.5 times its diameter. The total opening area of the right water hole accounts for about 4% to 6% of the area of the upper right water separator. 5. The three-dimensional rotary horizontal submerged flow artificial wetland device according to claim 1, characterized in that: there are 5 pieces of the upper right water-passing partitions, and the upper right water-passing partitions at the left and right ends are left with the adjacent upper right unit. The area between the baffle and the right baffle of the upper right unit is the water inlet and distribution area of the upper right unit and the water outlet and distribution area of the upper right unit respectively. The length of the water inlet and distribution area of the upper right unit and the water outlet and distribution area of the upper right unit is about 1/10 of the length of the right unit of the wetland; the area between two adjacent upper right water barriers is the upper right unit water treatment area, a total of 4 upper right unit water treatment areas, the length of a single upper right unit water treatment area It is 1/5 of the right unit length of the upper constructed wetland. 6. The three-dimensional rotary horizontal submerged flow artificial wetland device according to claim 1, characterized in that: the upper middle connecting pipe of the right unit and the lower middle connecting pipe of the right unit are two types of "]" type and "[" type respectively. A cylindrical hollow pipe with an open end, the height of which is 1.0 to 1.2 times the height of the right unit 1 of the upper constructed wetland. It is a cylindrical hollow pipe with open ends of the "L" type; the lower right unit outlet pipe horizontal short pipe and the vertical short pipe are equal in length, and the diameters of various pipes in the present invention are equal to the upper right unit water inlet pipe. 7. The three-dimensional rotary horizontal submerged flow constructed wetland device according to claim 1, characterized in that: the upper constructed wetland left unit, the middle constructed wetland right unit, the middle constructed wetland left unit, the lower constructed wetland right unit, the lower artificial wetland The box structure and size of the wetland left unit are consistent with the upper constructed wetland right unit, and the upper constructed wetland right unit and the upper constructed wetland left unit, the middle constructed wetland right unit and the middle constructed wetland left unit, the lower constructed wetland right unit and the lower constructed wetland The left unit of the constructed wetland forms a symmetrical relationship with respect to the planes formed by the vertical midlines of the left column, the middle column, and the right column respectively; The net distance and the net 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 unit. 8. The three-dimensional rotary horizontal submerged flow constructed wetland device according to claim 1, characterized in that: the left column, the middle column and the right column are all square hollow columns, and the three columns are respectively assembled in the three-story left and right constructed wetland units The left end, middle part and right end of the gap formed between them, the front and rear outer walls of each column are closely attached to 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 left column The center distance between the left column and the right column and the left and right outer walls of the constructed wetland unit is 1/10 of the length of the constructed wetland unit, and 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, and each constructed wetland unit has a total Set up 3 triangular supports, which are closely connected with the left column, middle column and right column on one side of the outer wall, and there are 18 in total.