Low-temperature-resistant uniform-water-distribution anti-blocking composite ecological bed system and construction method thereof

Abstract

The invention provides a low-temperature-resistant uniform-water-distribution anti-blocking composite ecological bed system and a construction method thereof.The system comprises a water inlet unit, a treatment unit, a water outlet unit and a cleaning unit, sewage to be treated flows into the water inlet unit, and the water flow can be adjusted through the water inlet unit; the water inlet unit is communicated with one end of the treatment unit and is used for uniformly distributing water to the treatment unit, and the treatment unit is used for treating inflowing sewage; the water outlet unit is communicated with the other end of the treatment unit, water treated by the treatment unit flows out through the water outlet unit, and the water outlet unit can regulate and control the operation water level of the treatment unit so as to realize low-temperature-resistant operation; the cleaning unit is suitable for cleaning the treatment unit to prevent the treatment unit from being blocked. The low-temperature-resistant uniform-water-distribution anti-clogging composite ecological bed system and the construction method thereof have the technical effects of uniform water distribution, difficulty in clogging during sewage treatment, low-temperature operation resistance and high sewage treatment efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of artificial wetlands, and more specifically, relates to a low-temperature resistant, uniformly water-distributing, and anti-clogging composite ecological bed system and a construction method thereof. Background Art

[0002] As a new type of sewage water ecological restoration technology, the constructed wetland sewage treatment system utilizes the physical, chemical and biological synergistic effects of fillers (including soil), plants and microorganisms to purify sewage. It has the advantages of low construction cost, easy operation and maintenance, near-zero power operation, buffering the impact on hydraulic and pollution loads, and simple and practical technology. It has become a new sewage treatment technology that has developed rapidly in recent years.

[0003] In view of the many advantages of artificial wetlands, they are widely used in the construction of ecological environment infrastructure in my country. Various forms of wetland process combinations, structures and matrix compositions have been widely proposed and applied. But in general, the limitations of artificial wetlands have not been effectively broken through, which is mainly manifested in the following three aspects.

[0004] First, the hydraulic load is low and occupies a large area of ​​land.

[0005] Second, the treatment efficiency is greatly affected by temperature. The sewage treatment effect is not good under low temperature conditions, which limits the promotion and application of artificial wetlands in northern my country.

[0006] Third, the adsorption capacity of the filler in the subsurface wetland will gradually become saturated and the pores will gradually become blocked. The treatment effect of the subsurface wetland is better than that of the surface wetland, but the subsurface wetland is more prone to pore blockage, resulting in a decline in purification function year by year, limiting the further application of subsurface wetland technology.

[0007] Therefore, there is an urgent need to develop a technology that can not only save land resources, but also ensure that the wetland treatment capacity is not significantly reduced under low temperature weather conditions, and can also reduce maintenance costs and extend the life of matrix fillers. It has broad promotion value and significant environmental, economic and social benefits. Summary of the invention

[0008] The purpose of the present invention is to provide a low-temperature resistant, uniformly distributed, anti-clogging composite ecological bed system and a construction method thereof, aiming to solve the technical problems in the prior art of uneven water distribution and easy clogging when treating sewage in artificial wetlands, as well as poor low-temperature operation in winter.

[0009] To achieve the above purpose, the technical solution adopted by the present invention is to provide a low temperature resistant, uniformly distributed, anti-clogging composite ecological bed system, comprising: A water inlet unit, into which the sewage to be treated flows, and through which the water flow rate can be adjusted; A treatment unit, wherein the water inlet unit is connected to one end of the treatment unit and is used to evenly distribute water to the treatment unit, and the treatment unit is used to treat the inflowing sewage; A water outlet unit is connected to the other end of the processing unit, and the water treated by the processing unit flows out through the water outlet unit. The water outlet unit can adjust the operating water level of the processing unit to achieve low temperature resistance operation; The cleaning unit is suitable for cleaning the processing unit to prevent the processing unit from being blocked.

[0010] In a possible implementation, the water inlet unit includes: A water inlet channel is arranged near one side of the treatment unit, and a water hole is provided on the side of the water inlet channel near the treatment unit, and water in the water inlet channel flows out from the water hole; An adjustable gate plate is slidably connected to the water inlet channel and is used to block and cover the water hole. The adjustable gate plate is suitable for adjusting the opening of the water hole through its sliding, thereby adjusting the water flow to the treatment unit; A water distribution tank, located above the processing unit and below the water hole, the water distribution tank is used to receive water flowing out of the water hole; A water distribution main pipe, the upper end of which is connected to the bottom of the water distribution tank; The perforated water distribution pipe is arranged horizontally and communicated with the lower end of the water distribution main pipe. The water discharged from the water distribution tank passes through the water distribution main pipe and the perforated water distribution pipe in sequence and flows into the interior of the processing unit.

[0011] In a possible implementation, the processing unit includes: The anti-seepage layer is located at the bottom of the pool; A light filler bed, located at the upper end of the anti-seepage layer, comprising a plurality of light fillers, wherein the density of the light fillers is less than 1000 kg / m³, and the light filler bed is in a suspended fluidized state during the cleaning process; The upper box is multiple and evenly arranged, the interior of the upper box is filled with box fillers, wetland plants are planted in the upper box, the density of the box fillers is greater than 1000kg / m³, the multiple upper boxes are used to limit the floating of the lightweight filler bed, and the multiple upper boxes and the multiple box fillers form multiple modular units; The box filler can be taken out from the interior of the upper box and loaded into the interior of the upper box, and the lightweight filler, the box filler and the wetland plants are all used to treat sewage.

[0012] In a possible implementation, the upper box includes: A wire mesh box, with an open top, the box filler is filled inside the wire mesh box, the lower part of the wetland plant is buried or planted inside the wire mesh box, and the upper part extends and grows above the wire mesh box, the wire mesh box has a plurality of mesh holes evenly arranged, and the mesh hole diameter is less than 10 mm; A handle is connected to the outside of the wire mesh box.

[0013] In a possible implementation, the lightweight filler is expanded clay or composite expanded clay with a particle size of 20-25 mm; and the box filler has a particle size of 10-20 mm.

[0014] In a possible implementation, the water outlet unit includes: an outlet channel, disposed near the other side of the treatment unit; A perforated water collecting pipe is horizontally arranged at the inner bottom of the processing unit; A water collecting main pipe, one end of which is connected to the perforated water collecting pipe; A rotating elbow, one end of which is connected to the other end of the water collecting main pipe; An outlet pipe, one end of which is connected to the other end of the rotating elbow, and the other end of which is placed inside the outlet channel, and the water treated by the treatment unit sequentially passes through the perforated water collecting pipe, the water collecting main pipe, the rotating elbow and the outlet pipe before flowing into the outlet channel; The rotating elbow is rotated to adjust the height of the end of the water outlet pipe away from the rotating elbow, thereby regulating the operating water level of the processing unit to achieve low-temperature resistant operation.

[0015] In a possible implementation, the cleaning unit includes: A clean water pipe, one end of which is connected to the interior of the pool body and is used to fill the interior of the pool body with clean water; A mobile aeration device, comprising a perforated aeration pipe arranged at the bottom of the inner side of the treatment unit, wherein the perforated aeration pipe is inserted under the light filler bed after the light filler bed floats, and the mobile aeration device is suitable for driving the perforated aeration pipe to move along the length direction of the tank body and conveying gas into the perforated aeration pipe, wherein the gas output from the perforated aeration pipe is used to stir the water body and blow off and clean the sediment adhered to the light filler; A vent pipe, one end of which is connected to the interior of the tank body and is used to discharge the water inside the tank body after cleaning; When the lightweight filler of the processing unit is blocked, the upper box is moved away, and clean water is filled into the pool body using the clean water pipe. When the clean water level reaches the bottom height of the original position of the upper box, the lightweight filler bed is in a suspended fluidized state under the buoyancy of the water.

[0016] In a possible implementation, the mobile aeration device includes: A mobile aerator is arranged on the ground and has an aeration end for aeration, and the mobile aerator has the freedom to move along the length direction of the tank body; A connecting rod, one end of which is fixedly connected to the mobile aerator and the other end of which is fixedly connected to the perforated aeration tube, and the connecting rod is used to drive the perforated aeration tube to move; An aeration connecting hose has one end connected to the aeration end of the mobile aerator and the other end connected to the perforated aeration tube. The aeration connecting hose is used to transport gas to the inside of the perforated aeration tube.

[0017] In a possible implementation, the mobile aerator includes: A mobile cart is arranged on the ground and has the freedom to move in any direction. One end of the connecting rod is fixedly connected to the mobile cart, and the connecting rod is driven to move when the mobile cart moves. an aerator, connected to the upper end of the mobile cart, having an aeration end for aeration; The electric control unit is electrically connected to the mobile cart and the aerator, and has control modules for controlling the operation of the mobile cart and the aerator respectively.

[0018] The beneficial effects of a low-temperature resistant, uniformly water-distributed, and anti-clogging composite ecological bed system provided by the present invention are as follows: compared with the prior art, the low-temperature resistant, uniformly water-distributed, and anti-clogging composite ecological bed system provided by the present invention comprises an inlet unit, a treatment unit, an outlet unit, and a cleaning unit, the sewage to be treated flows into the inlet unit, and the water flow rate through the inlet unit can be adjusted; the inlet unit is connected to one end of the treatment unit and is used to evenly distribute water to the treatment unit, and the treatment unit is used to treat the inflowing sewage; the outlet unit is connected to the other end of the treatment unit, and the water treated by the treatment unit flows out through the outlet unit, and the outlet unit can regulate the operating water level of the treatment unit to achieve low-temperature resistant operation; the cleaning unit is suitable for cleaning the treatment unit to prevent the treatment unit from being blocked, and solves the technical problems of uneven water distribution, easy blockage when treating sewage, and poor low-temperature operation effect in winter, and has the technical effects of even water distribution, not easy blockage when treating sewage, low-temperature resistant operation, and high sewage treatment efficiency.

[0019] The present invention also provides a method for constructing a low-temperature resistant, uniformly water-distributing, and anti-clogging composite ecological bed system, comprising the following steps: Constructing a processing unit, the processing unit comprising: laying an impermeable layer at the bottom of the pool body; laying a light filler bed on the upper end of the impermeable layer, the light filler bed comprising a plurality of light fillers, the density of the light filler being less than 1000kg / m³, and the light filler bed being in a suspended fluidized state during the cleaning process; laying a plurality of evenly arranged upper boxes on the upper end of the light filler bed, the interior of the upper boxes being filled with box fillers, wetland plants being planted in the upper boxes, the density of the box fillers being greater than 1000kg / m³, the plurality of upper boxes being used to limit the floating of the light filler bed, and the plurality of upper boxes and the plurality of box fillers forming a plurality of modular units; Constructing a water inlet unit so that the water outlet end of the water inlet unit is connected to one end of the treatment unit, and the sewage to be treated flows into the treatment unit evenly through the water inlet unit, and the water flow through the water inlet unit can be adjusted; Construct a water outlet unit, so that the water inlet end of the water outlet unit is connected to the other end of the processing unit, and the water treated by the processing unit flows into the water outlet unit. The water outlet unit can adjust the operating water level of the processing unit to achieve low temperature resistance operation; A cleaning unit is constructed to clean the processing unit to prevent the processing unit from being blocked.

[0020] The beneficial effect of the construction method of a low-temperature resistant, uniformly water-distributing, and anti-clogging composite ecological bed system provided by the present invention is that: compared with the prior art, by sequentially constructing a treatment unit, a water inlet unit, a water outlet unit, and a cleaning unit, the water inlet unit can evenly distribute water to the treatment unit, the cleaning unit can clean the treatment unit, and the water outlet unit can regulate the operating water level to achieve low-temperature resistant operation, which solves the technical problems of uneven water distribution, easy clogging when treating sewage, and poor low-temperature operation in winter. It has the technical effects of evenly distributing water, not easily clogging when treating sewage, being resistant to low-temperature operation, and high sewage treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic structural diagram of a low-temperature resistant, uniformly water-distributing, anti-clogging composite ecological bed system provided by an embodiment of the present invention; Figure 2 A top view of a low temperature resistant, uniform water distribution and anti-clogging composite ecological bed system provided by an embodiment of the present invention; Figure 3 A front view of a low temperature resistant, uniform water distribution and anti-clogging composite ecological bed system provided by an embodiment of the present invention; Figure 4 A schematic diagram of a structure of a water inlet unit of a low-temperature resistant, uniformly distributed, anti-clogging composite ecological bed system provided by an embodiment of the present invention in a usage state; Figure 5 A schematic structural diagram of another usage state of a water inlet unit of a low-temperature resistant, uniformly distributed, anti-clogging composite ecological bed system provided by an embodiment of the present invention; Figure 6 A front view of the structure of a processing unit of a low-temperature resistant, uniformly distributed, anti-clogging composite ecological bed system provided by an embodiment of the present invention; Figure 7 A schematic diagram of the upper box structure of a processing unit of a low-temperature resistant, uniformly distributed, anti-clogging composite ecological bed system provided by an embodiment of the present invention; Figure 8 A schematic diagram of the explosion structure of the upper box of the processing unit of a low-temperature resistant, uniformly distributed, anti-clogging composite ecological bed system provided by an embodiment of the present invention; Fig. 9 A top view of the water outlet unit structure of a low temperature resistant, uniform water distribution and anti-clogging composite ecological bed system provided by an embodiment of the present invention; Fig.10 A front view of the water outlet unit structure of a low temperature resistant, uniform water distribution and anti-clogging composite ecological bed system provided by an embodiment of the present invention; Fig.11 A schematic diagram of the structure of the rotating elbow of the water outlet unit of a low-temperature resistant, uniformly distributed, and anti-clogging composite ecological bed system provided by an embodiment of the present invention after rotation and in the original state, as well as the operating water level difference; Fig.12 A schematic diagram of the cleaning unit structure of a low-temperature resistant, uniformly water-distributing, and anti-clogging composite ecological bed system provided in an embodiment of the present invention.

[0023] In the figure: 1, water inlet unit; 11, water inlet channel; 12, adjustable gate; 13, water distribution tank; 14, water distribution main pipe; 15, perforated water distribution pipe; 16, water hole; 17, ruler; 2. Processing unit; 21. Anti-seepage layer; 22. Lightweight filler bed; 23. Upper box; 231. Box filler; 232. Wetland plants; 233. Wire mesh box; 234. Handle; 235. Mesh; 3. Water outlet unit; 31. Water outlet channel; 32. Perforated water collecting pipe; 33. Water collecting main pipe; 34. Rotary elbow; 35. Water outlet pipe; 4. Cleaning unit; 41. Clean water pipe; 42. Mobile aeration device; 421. Perforated aeration pipe; 422. Mobile aerator; 4221. Mobile cart; 4222. Aerator; 423. Connecting rod; 424. Aeration connecting hose; 43. Vent pipe. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] Please also read Figures 1 to 12 , now the invention provides a low temperature resistant, uniform water distribution and anti-clogging composite ecological bed system and its construction method are described. A low temperature resistant, uniform water distribution and anti-clogging composite ecological bed system comprises an inlet unit 1, a treatment unit 2, an outlet unit 3 and a cleaning unit 4. The sewage to be treated flows into the inlet unit 1, and the water flow rate through the inlet unit 1 can be adjusted; the inlet unit 1 is connected to one end of the treatment unit 2 and is used to evenly distribute water to the treatment unit 2, and the treatment unit 2 is used to treat the inflowing sewage; the outlet unit 3 is connected to the other end of the treatment unit 2, and the water treated by the treatment unit 2 flows out through the outlet unit 3, and the outlet unit 3 can regulate the operating water level of the treatment unit 2 to achieve low temperature resistant operation; the cleaning unit 4 is suitable for cleaning the treatment unit 2 to prevent the treatment unit 2 from being blocked.

[0026] The present invention provides a low-temperature resistant, uniformly distributed, and anti-clogging composite ecological bed system. Compared with the prior art, the present invention provides a low-temperature resistant, uniformly distributed, and anti-clogging composite ecological bed system. By setting a water inlet unit 1 capable of adjusting the water flow rate, the sewage tank treatment unit 2 can be evenly distributed with water. By setting a water outlet unit 3, the operating water level of the treatment unit 2 can be regulated, thereby being able to resist low-temperature operation. By setting a cleaning unit 4, the treatment unit 2 can be cleaned, which can effectively prevent clogging, solves the technical problems of uneven water distribution when treating sewage, easy clogging when treating sewage, and poor low-temperature operation effect in winter, and has the technical effects of evenly distributing water, not being easy to clog when treating sewage, being able to resist low-temperature operation, and high sewage treatment efficiency.

[0027] In some embodiments, see Figure 1-Figure 3 , Figure 6-Figure 8The water inlet unit 1 includes an inlet channel 11, an adjustable gate 12, a water distribution tank 13, a water distribution main pipe 14 and a perforated water distribution pipe 15; the inlet channel 11 is arranged near the side of the treatment unit 2, and a water hole 16 is opened on the side of the inlet channel 11 near the treatment unit 2, and the water in the inlet channel 11 flows out from the water hole 16; the adjustable gate 12 is slidably connected to the inlet channel 11 and is used to block and cover the water hole 16, and the adjustable gate 12 is suitable for adjusting the water hole 16 through its sliding 6, thereby adjusting the water flow to the treatment unit 2; the water distribution tank 13 is located above the treatment unit 2 and below the water hole 16, and the water distribution tank 13 is used to receive the water flowing out of the water hole 16; the upper end of the water distribution pipe 14 is connected to the bottom of the water distribution tank 13; the perforated water distribution pipe 15 is arranged horizontally and is connected to the lower end of the water distribution pipe 14. The water discharged from the water distribution tank 13 passes through the water distribution pipe 14 and the perforated water distribution pipe 15 in turn and flows into the treatment unit 2. The sewage to be treated flows into the water inlet channel 11. When the adjustable gate 12 is opened, the sewage inside the water inlet channel 11 is discharged through the water hole 16 and flows into the water distribution tank 13, and finally flows into the treatment unit 2 through the perforated water distribution pipe 15. The adjustable gate plate 12 is slidably connected to the side of the water inlet channel 11. The sliding direction of the adjustable gate plate 12 is vertical. Sliding downward can block the water hole 16, and sliding upward can block the water hole 16 or open the water hole 16. The opening degree or range of the water hole 16 can be adjusted by the lifting height of the adjustable gate plate 12. The larger the opening degree, the greater the water flow, and vice versa, the smaller the water flow, thereby realizing the regulation of the water flow.

[0028] Specifically, a scale 17 is provided on the side of the water inlet channel 11, and the water level inside the water inlet channel 11 can be seen. The upper end of the water distribution tank 13 is open or can be closed, and can contain water, which plays a role in buffering and temporarily storing water. Usually, the water distribution main pipe 14 is arranged vertically, and the lower end is connected to the middle of the perforated water distribution pipe 15. The perforated water distribution pipe 15 is a water pipe with multiple holes evenly distributed along its axial direction, which is called a perforated water distribution pipe 15. Sewage can flow out of the holes and flow to the treatment unit 2.

[0029] In some embodiments, see Figure 1-Figure 3 , Figure 6-Figure 8The treatment unit 2 includes an impermeable layer 21, a lightweight filler bed 22 and an upper box 23. The impermeable layer 21 is arranged at the bottom of the pool body; the lightweight filler bed 22 is located at the upper end of the impermeable layer 21, and includes a plurality of lightweight fillers, the density of the lightweight fillers is less than 1000kg / m³, and the lightweight filler bed 22 is in a suspended fluidized state during the cleaning process; the upper box 23 is multiple and evenly arranged, the interior of the upper box 23 is filled with box fillers 231, and wetland plants 232 are planted in the upper box 23, the density of the box fillers 231 is greater than 1000kg / m³, and the plurality of upper boxes 23 are all used to limit the floating of the lightweight filler bed 22, and the plurality of upper boxes 23 and the plurality of box fillers 231 form a plurality of modular units; wherein the box filler 231 can be taken out from the interior of the upper box 23 and loaded into the interior of the upper box 23 to realize modular rapid assembly; the lightweight filler, the box filler 231 and the wetland plants 232 are all used to treat sewage. The anti-seepage layer 21 can prevent water from penetrating to the bottom of the pool body or the inside of the soil. The anti-seepage layer 21 is a prior art and is coated on the bottom wall of the pool body. The pool body is a structure similar to a pit in the prior art. A plurality of lightweight fillers are combined to form a lightweight filler bed 22, which is spread all over the upper end of the anti-seepage layer 21. A plurality of upper boxes 23 are arranged in contact with each other, that is, two adjacent upper boxes 23 are in contact with each other and are located at the upper end of the lightweight filler bed 22, which plays a role in pressing down the lightweight filler bed 22.

[0030] In some embodiments, see Figure 1-Figure 3 , Figure 6-Figure 8 The upper box 23 includes a wire mesh box 233 and a handle 234. The upper end of the wire mesh box 233 is open, the box filler 231 is filled in the wire mesh box 233, the lower part of the wetland plant 232 is buried or planted in the wire mesh box 233, and the upper part extends to the upper part of the wire mesh box 233. The wire mesh box 233 has a plurality of mesh holes 235 arranged evenly, and the diameter of the mesh holes 235 is less than 10mm; the handle 234 is connected to the outside of the wire mesh box 233. The wire mesh box 233 is a mesh box made of lead wire, and the mesh box has mesh holes 235, which are arranged in a square shape when viewed from above, and there are four handles 234, which are all arranged at the upper ends of the four ends of the wire mesh box 233, for the staff to hold and pull the wire mesh box 233 to move.

[0031] Preferably, the length, width and height of the wire mesh box 233 are 0.3 m, 1 m and 1 m respectively.

[0032] In some embodiments, see Figure 1-Figure 3 , Figure 6-Figure 8, the lightweight filler is ceramsite or composite ceramsite with a particle size of 20-25mm; the particle size of the box filler 231 is 10-20mm. The lightweight filler is in a suspended fluidized state during the cleaning process. During the treatment operation, the lightweight filler is in a compacted state, and the water quality is purified by the physical and chemical effects of the granular lightweight filler itself, the large number of microorganisms attached to the lightweight filler, and the action of plants. During the cleaning process, the lightweight filler is in a suspended fluidized state, which facilitates the fall-off of impurities and old biofilms in the gaps of the lightweight filler, and is finally discharged to the outside of the treatment unit 2. The box filler 231 can be made of gravel, whose density is greater than the density of water, while the density of the lightweight filler is less than the density of water. The box filler 231 plays an anti-floating role for the lightweight filler and can prevent the loss of the lightweight filler. At the same time, the upper box 23 provides an attachment matrix for plant growth.

[0033] In winter, the wetland plants 232 grown on the upper box 23 can be harvested and spread flat on the top of the upper box 23 as a slow-release plant carbon source, which improves the C / N ratio of the treated water in winter, promotes ammoniation and denitrification, and the covering plants can also play a role in heat preservation.

[0034] In some embodiments, see Figure 1-Figure 2 , Figure 9-11 The water outlet unit 3 includes a water outlet channel 31, a perforated water collecting pipe 32, a water collecting main pipe 33, a rotating elbow 34 and a water outlet pipe 35; the water outlet channel 31 is arranged near the other side of the treatment unit 2; the perforated water collecting pipe 32 is horizontally arranged at the inner bottom of the treatment unit 2; one end of the water collecting main pipe 33 is connected to the perforated water collecting pipe 32; one end of the rotating elbow 34 is connected to the other end of the water collecting main pipe 33; one end of the water outlet pipe 35 is connected to the other end of the rotating elbow 34, and the other end is placed inside the water outlet channel 31. The water treated by the treatment unit 2 passes through the perforated water collecting pipe 32, the water collecting main pipe 33, the rotating elbow 34 and the water outlet pipe 35 in turn and then flows into the water outlet channel 31; wherein, by rotating the rotating elbow 34 to adjust the height of one end of the water outlet pipe 35 away from the rotating elbow 34, the operating water level of the treatment unit 2 can be regulated to achieve low temperature resistance operation. The outlet channel 31 and the inlet channel 11 are respectively arranged on both sides or both ends of the pool body. The perforated water collecting pipe 32 is also a water pipe. A plurality of holes are evenly distributed along the axial direction of the water pipe. The treated water enters the perforated water collecting pipe 32 from the holes and finally flows into the outlet channel 31. It should be noted that in the specific use process, the swivel elbow 34 can be reasonably rotated according to the water level height, so that the water level height can be adjusted. The swivel elbow 34 is a swivel joint in the prior art, which can rotate by itself, thereby driving the outlet pipe 35 to rotate or swing together. Excess water will be discharged from the outlet pipe 35 to the outlet channel 31. The water level height in the outlet pipe 35 is the same as the water level height of the treatment unit 2.

[0035] Specifically, the water level in the outlet pipe 35 can be changed by rotating the elbow 34, thereby adjusting the water level of the treatment unit 2 to meet the requirements of the wetland for water level changes during operation. In particular, in winter, under low temperature conditions, the water level can be raised first, and after the wetland water surface forms an ice cover of a certain thickness, the water level in the treatment unit 2 can be lowered, so that an air layer with a thickness of 1000 mm is formed between the ice layer and the lightweight filler. Fig.11 The height represented by H in the middle can play a role in heat preservation, allowing the wetland to continue to operate in low temperatures in winter.

[0036] In some embodiments, see Figure 1-Figure 2 , Fig.12 The cleaning unit 4 includes a clean water pipe 41, a mobile aeration device 42 and a venting pipe 43. One end of the clean water pipe 41 is connected to the inside of the tank body and is used to fill the inside of the tank body with clean water; the mobile aeration device 42 includes a perforated aeration pipe 421 arranged at the bottom of the inner side of the treatment unit 2. After the light filler bed 22 floats, the perforated aeration pipe 421 is inserted under the light filler bed 22. The mobile aeration device 42 is suitable for driving the perforated aeration pipe 421 to move along the length direction of the tank body and transport the air into the perforated aeration pipe 421. Gas, the gas output from the perforated aeration pipe 421 is used to stir the water body and blow off and clean the sediments adhered to the lightweight filler; one end of the vent pipe 43 is connected to the inside of the tank body, which is used to discharge the water inside the tank body after cleaning; wherein, when the lightweight filler of the treatment unit 2 is blocked, the upper box body 23 is moved away, and the clean water pipe 41 is used to fill the inside of the tank body with clean water, and when the clean water level reaches the bottom height of the original position of the upper box body 23, the lightweight filler bed 22 is in a suspended fluidized state under the buoyancy of the water body. Through the reciprocating movement of the mobile aeration device 42, the sediments on the lightweight filler can be blown off, thereby preventing the sediments from clogging the lightweight filler. After cleaning, the vent pipe 43 can be opened to discharge the sewage from the vent pipe 43. The perforated aeration pipe 421 is an aeration pipe with multiple holes evenly distributed along its axial direction, which can achieve aeration. After the treatment unit 2 is cleaned, the present invention can restore normal operation capacity.

[0037] When blockage occurs, the upper box body 23 is moved away by holding the handle, and the lightweight packing bed 22 is left behind. The lightweight packing bed 22 will float up and move, and clean water is added into the treatment unit 2 through the clean water pipe 41. The clean water makes the packing of the lightweight packing bed 22 appear suspended and fluidized. The mobile aeration device 42 is used to stir the water body to blow off the sediment attached to the lightweight packing, and finally the sewage is emptied through the drain pipe 43 to achieve the cleaning of the lightweight packing.

[0038] The mobile aeration device 42 can be cleaned regularly, realizing the anti-blocking operation of the treatment unit 2, solving the technical problems of easy blockage and difficult operation and maintenance in the common prior art. When the cleaning is completed, the perforated aeration pipe 421 is removed and the cleaning sewage is discharged through the vent pipe 43.

[0039] In some embodiments, see Figure 1-Figure 2 , Fig.12 The mobile aeration device 42 includes a mobile aerator 422, a connecting rod 423 and an aeration connecting hose 424. The mobile aerator 422 is arranged on the ground and has an aeration end for aeration. The mobile aerator 422 has the freedom to move along the length direction of the pool body; one end of the connecting rod 423 is fixedly connected to the mobile aerator 422, and the other end is fixedly connected to the perforated aeration pipe 421, and the connecting rod 423 is used to drive the perforated aeration pipe 421 to move; one end of the aeration connecting hose 424 is connected to the aeration end of the mobile aerator 422, and the other end is connected to the perforated aeration pipe 421, and the aeration connecting hose 424 is used to transport gas to the inside of the perforated aeration pipe 421. The mobile aerator 422 can move back and forth, thereby driving the connecting rod 423 to move together, and the connecting rod 423 can move together with the perforated aeration tube 421, so that the perforated aeration tube 421 can achieve reciprocating movement under the light filler bed 22, so that the light filler can be cleaned. The aeration connecting hose 424 can be deformed but will not bend, that is, it will not affect the delivery of gas into the perforated aeration tube 421.

[0040] In some embodiments, see Figure 1-Figure 2 , Fig.12 The mobile aerator 422 includes a mobile cart 4221, an aerator 4222 and an electronic control unit; the mobile cart 4221 is arranged on the ground and has the freedom to move in any direction; one end of the connecting rod 423 is fixedly connected to the mobile cart 4221, and the mobile cart 4221 drives the connecting rod 423 to move when it moves; the aerator 4222 is connected to the upper end of the mobile cart 4221 and has an aeration end for aeration; the electronic control unit is electrically connected to the mobile cart 4221 and the aerator 4222, respectively, and has a control module for controlling the operation of the mobile cart 4221 and the aerator 4222 respectively. The mobile cart 4221 can move back and forth in any direction. By controlling the moving path of the mobile cart 4221, the moving path of the perforated aeration tube 421 can be controlled, which can play a role in cleaning the lightweight filler. The mobile cart 4221 can be moved manually, or a driver can be installed at its bottom so that the driver drives it to move. In this embodiment, multiple drivers are arranged at the bottom of the mobile cart 4221, and the operation of the drivers can be controlled by the electronic control unit, so that the mobile cart 4221 can be driven to move, and the direction of movement can be adjusted manually, so as to control the automatic movement of the perforated aeration tube 421. The aerator 4222 is a prior art product, which can generate aeration, and its operation is controlled by the electronic control unit. The electronic control unit in this embodiment is a prior art, including a control panel, a PLC controller, a control circuit, etc., and its operation can be controlled by the operator.

[0041] The present invention also provides a method for constructing a low temperature resistant, uniform water distribution and anti-clogging composite ecological bed system, please refer to Figure 1 , including the following steps: Construct a processing unit 2, which includes: laying an impermeable layer 21 at the bottom of the pool body; laying a lightweight filler bed on the upper end of the impermeable layer 21, the lightweight filler bed 22 includes a plurality of lightweight fillers, the density of the lightweight fillers is less than 1000kg / m³, and the lightweight filler bed 22 is in a suspended fluidized state during the cleaning process; laying a plurality of evenly arranged upper boxes 23 on the upper end of the lightweight filler bed 22, the interior of the upper boxes 23 is filled with box fillers 231, wetland plants 232 are planted in the upper boxes 23, the density of the box fillers 231 is greater than 1000kg / m³, the plurality of upper boxes 23 are used to limit the floating of the lightweight filler bed 22, and the plurality of upper boxes 23 and the plurality of box fillers 231 form a plurality of modular units; the box fillers 231 can be taken out from the interior of the upper box 23 and loaded into the interior of the upper box 23, so as to realize modular rapid assembly; Construct a water inlet unit 1 so that the water outlet end of the water inlet unit 1 is connected to one end of the treatment unit 2, and the sewage to be treated flows evenly into the treatment unit 2 through the water inlet unit 1, and the water flow through the water inlet unit 1 can be adjusted; Construct a water outlet unit 3, so that the water inlet end of the water outlet unit 3 is connected to the other end of the processing unit 2, and the water treated by the processing unit 2 flows into the water outlet unit 3. The water outlet unit 3 can adjust the operating water level of the processing unit 2 to achieve low temperature resistance operation; A cleaning unit 4 is constructed so that the cleaning unit 4 cleans the processing unit 2 to prevent the processing unit 2 from being blocked.

[0042] The beneficial effect of the construction method of a low-temperature resistant, uniformly water-distributing, and anti-clogging composite ecological bed system provided by the present invention is that: compared with the prior art, by sequentially constructing a treatment unit 2, a water inlet unit 1, a water outlet unit 3, and a cleaning unit 4, the water inlet unit 1 can evenly distribute water to the treatment unit 2, the cleaning unit 4 can clean the treatment unit 2, and the water outlet unit 3 can regulate the operating water level to achieve low-temperature resistant operation, thereby solving the technical problems of uneven water distribution, easy clogging when treating sewage, and poor low-temperature operation in winter. The system has the technical effects of evenly distributing water, not being easy to clog when treating sewage, being resistant to low-temperature operation, and having high sewage treatment efficiency.

[0043] Specifically, during the treatment operation, the lightweight filler is in a compacted state, and the water quality is purified by the physical and chemical effects of the granular lightweight filler itself, the large number of microorganisms attached to the lightweight filler, and the effects of plants. During the cleaning process, the lightweight filler is in a suspended fluidized state, which facilitates the fall of impurities and old biofilms in the gaps of the lightweight filler, and is finally discharged to the outside of the treatment unit 2. The specific settings of the water inlet unit 1, the treatment unit 2, the water outlet unit 3, and the cleaning unit 4 in this embodiment can be referred to the above description, and will not be described here.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A low temperature resistant, uniform water distribution and anti-clogging composite ecological bed system, characterized in that: include: A water inlet unit, into which the sewage to be treated flows, and through which the water flow rate can be adjusted; A treatment unit, wherein the water inlet unit is connected to one end of the treatment unit and is used to evenly distribute water to the treatment unit, and the treatment unit is used to treat the inflowing sewage; A water outlet unit is connected to the other end of the processing unit, and the water treated by the processing unit flows out through the water outlet unit. The water outlet unit can adjust the operating water level of the processing unit to achieve low temperature resistance operation; The cleaning unit is suitable for cleaning the processing unit to prevent the processing unit from being blocked.

2. A low temperature resistant, uniform water distribution and anti-clogging composite ecological bed system as claimed in claim 1, characterized in that: The water inlet unit comprises: A water inlet channel is arranged near one side of the treatment unit, and a water hole is provided on the side of the water inlet channel near the treatment unit, and water in the water inlet channel flows out from the water hole; An adjustable gate plate is slidably connected to the water inlet channel and is used to block and cover the water hole. The adjustable gate plate is suitable for adjusting the opening of the water hole through its sliding, thereby adjusting the water flow to the treatment unit; A water distribution tank, located above the processing unit and below the water hole, the water distribution tank is used to receive water flowing out of the water hole; A water distribution main pipe, the upper end of which is connected to the bottom of the water distribution tank; The perforated water distribution pipe is arranged horizontally and communicated with the lower end of the water distribution main pipe. The water discharged from the water distribution tank passes through the water distribution main pipe and the perforated water distribution pipe in sequence and flows into the interior of the processing unit.

3. A low temperature resistant, uniform water distribution and anti-clogging composite ecological bed system as claimed in claim 1, characterized in that: The processing unit comprises: The anti-seepage layer is located at the bottom of the pool; A light filler bed, located at the upper end of the anti-seepage layer, comprising a plurality of light fillers, wherein the density of the light fillers is less than 1000 kg / m³, and the light filler bed is in a suspended fluidized state during the cleaning process; The upper box is multiple and evenly arranged, the interior of the upper box is filled with box fillers, wetland plants are planted in the upper box, the density of the box fillers is greater than 1000kg / m³, the multiple upper boxes are used to limit the floating of the lightweight filler bed, and the multiple upper boxes and the multiple box fillers form multiple modular units; The box filler can be taken out from the interior of the upper box and loaded into the interior of the upper box, and the lightweight filler, the box filler and the wetland plants are all used to treat sewage.

4. A low temperature resistant, uniform water distribution and anti-clogging composite ecological bed system as claimed in claim 3, characterized in that: The upper box body comprises: A wire mesh box, with an open top, the box filler is filled inside the wire mesh box, the lower part of the wetland plant is buried or planted inside the wire mesh box, and the upper part extends and grows above the wire mesh box, the wire mesh box has a plurality of mesh holes evenly arranged, and the mesh hole diameter is less than 10 mm; A handle is connected to the outside of the wire mesh box.

5. A low temperature resistant, uniform water distribution and anti-clogging composite ecological bed system as claimed in claim 3, characterized in that: The lightweight filler is ceramsite or composite ceramsite with a particle size of 20-25 mm; the box filler has a particle size of 10-20 mm.

6. The low temperature resistant, uniform water distribution and anti-clogging composite ecological bed system according to claim 1, characterized in that: The water outlet unit comprises: an outlet channel, disposed near the other side of the treatment unit; A perforated water collecting pipe is horizontally arranged at the inner bottom of the processing unit; A water collecting main pipe, one end of which is connected to the perforated water collecting pipe; A rotating elbow, one end of which is connected to the other end of the water collecting main pipe; An outlet pipe, one end of which is connected to the other end of the rotating elbow, and the other end of which is placed inside the outlet channel, and the water treated by the treatment unit sequentially passes through the perforated water collecting pipe, the water collecting main pipe, the rotating elbow and the outlet pipe before flowing into the outlet channel; The rotating elbow is rotated to adjust the height of the end of the water outlet pipe away from the rotating elbow, thereby regulating the operating water level of the processing unit to achieve low-temperature resistant operation.

7. A low temperature resistant, uniform water distribution and anti-clogging composite ecological bed system as claimed in claim 3, characterized in that: The cleaning unit comprises: A clean water pipe, one end of which is connected to the interior of the pool body and is used to fill the interior of the pool body with clean water; A mobile aeration device, comprising a perforated aeration pipe arranged at the bottom of the inner side of the treatment unit, wherein the perforated aeration pipe is inserted under the light filler bed after the light filler bed floats, and the mobile aeration device is suitable for driving the perforated aeration pipe to move along the length direction of the tank body and conveying gas into the perforated aeration pipe, wherein the gas output from the perforated aeration pipe is used to stir the water body and blow off and clean the sediment adhered to the light filler; A vent pipe, one end of which is connected to the interior of the tank body and is used to discharge the water inside the tank body after cleaning; When the lightweight filler of the processing unit is blocked, the upper box is moved away, and clean water is filled into the pool body using the clean water pipe. When the clean water level reaches the bottom height of the original position of the upper box, the lightweight filler bed is in a suspended fluidized state under the buoyancy of the water.

8. A low temperature resistant, uniform water distribution and anti-clogging composite ecological bed system as claimed in claim 7, characterized in that: The mobile aeration device comprises: A mobile aerator is arranged on the ground and has an aeration end for aeration, and the mobile aerator has the freedom to move along the length direction of the tank body; A connecting rod, one end of which is fixedly connected to the mobile aerator and the other end of which is fixedly connected to the perforated aeration tube, and the connecting rod is used to drive the perforated aeration tube to move; An aeration connecting hose has one end connected to the aeration end of the mobile aerator and the other end connected to the perforated aeration tube. The aeration connecting hose is used to transport gas to the inside of the perforated aeration tube.

9. A low temperature resistant, uniform water distribution and anti-clogging composite ecological bed system as claimed in claim 8, characterized in that: The mobile aerator comprises: A mobile cart is arranged on the ground and has the freedom to move in any direction. One end of the connecting rod is fixedly connected to the mobile cart, and the connecting rod is driven to move when the mobile cart moves. an aerator, connected to the upper end of the mobile cart, having an aeration end for aeration; The electric control unit is electrically connected to the mobile cart and the aerator, and has control modules for controlling the operation of the mobile cart and the aerator respectively.

10. A method for constructing a low temperature resistant, uniformly distributed, anti-clogging composite ecological bed system, characterized in that: The following steps are involved: Constructing a processing unit, the processing unit comprising: laying an impermeable layer at the bottom of the pool body; laying a light filler bed on the upper end of the impermeable layer, the light filler bed comprising a plurality of light fillers, the density of the light fillers being less than 1000kg / m³, and the light filler bed being in a suspended fluidized state during the cleaning process; laying a plurality of evenly arranged upper boxes on the upper end of the light filler bed, the interior of the upper boxes being filled with box fillers, wetland plants being planted in the upper boxes, the density of the box fillers being greater than 1000kg / m³, the plurality of upper boxes being used to limit the floating of the light filler bed, and the plurality of upper boxes forming a plurality of modular units; Constructing a water inlet unit so that the water outlet end of the water inlet unit is connected to one end of the treatment unit, and the sewage to be treated flows into the treatment unit evenly through the water inlet unit, and the water flow through the water inlet unit can be adjusted; Construct a water outlet unit so that the water inlet end of the water outlet unit is connected to the other end of the processing unit, and the water treated by the processing unit flows into the water outlet unit. The water outlet unit can adjust the operating water level of the processing unit to achieve low temperature resistance operation; A cleaning unit is constructed to clean the processing unit to prevent the processing unit from being blocked.

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