CN219567711U - A Vertical Flow Constructed Wetland Simulation Device - Google Patents

Abstract

The utility model discloses a vertical flow constructed wetland simulation device, which comprises: a barrel body, as a simulated carrier of a constructed wetland, a matrix filler with a microbial film is placed in the barrel body, and a reserved space is arranged above the matrix filler to place plants ; The water inlet pipe leads to the top of the bucket body, and a water inlet valve is arranged on the water inlet pipe; the water outlet pipe is arranged at the bottom of the bucket body, and a water outlet valve is arranged on the water outlet pipe; J-shaped pipe, the short part of the J-shaped pipe The end is detachably connected to the outlet pipe, and a screen is provided at the short end of the J-shaped pipe; the long end of the J-shaped pipe extends to the direction of the top of the barrel, and the long part of the J-shaped pipe Side by side with the barrel body. The utility model can realize the effective collection of micro-plastic solid particles in the artificial wetland simulation process, and ensures the consistent flow rate of the water in and out, thereby improving the test effect.

Description

A Vertical Flow Constructed Wetland Simulation Device

technical field

The utility model belongs to the technical field of artificial wetlands, in particular to a vertical flow artificial wetland simulation device.

Background technique

Constructed wetland is a ground similar to swampland that is artificially constructed and operated under control. Sewage and sludge are distributed to the artificially constructed wetland in a controlled manner. When sewage and sludge flow in a certain direction, they are mainly used It is a technology for treating sewage and sludge through the triple synergy of physics, chemistry and biology of soil, artificial medium, plants and microorganisms. During the test, it is necessary to use the artificial wetland simulation device to obtain test data.

Most of the present simulation devices introduce the effluent into a container through a funnel and then test the effluent in the container. But that is only suitable for detecting the removal effect of total phosphorus, total nitrogen and heavy metal elements in the effluent. Now microplastic removal is an emerging field, and the previous method of collecting effluent from constructed wetland barrels is no longer applicable, because the detection of microplastics is to detect the solid particles of microplastics, while the detection of elements such as nitrogen and phosphorus is to take the effluent Detection, so if the effluent is connected first, and then the microplastic solid particles are picked out after filtering the effluent, the influence of human factors will be magnified, because manual selection is far from taking care of all the solid particles filtered out, and many naked eyes will definitely be missed Invisible solid particles. Moreover, the flow velocity of the outlet and inlet of the existing device is different, which will affect the internal constructed wetland environment under the impact of the water flow, and affect the accuracy of the data in the experimental process.

Utility model content

In order to overcome the deficiencies of the prior art methods, the purpose of this utility model is to propose a vertical flow artificial wetland simulation device, which can realize the effective collection of microplastic solid particles in the artificial wetland simulation process and ensure the consistent flow rate of water in and out to improve the test effect.

In order to achieve the above purpose, the technical solution adopted by the utility model is: a vertical flow artificial wetland simulation device, including:

The barrel body is used as a simulated carrier of the artificial wetland, and a matrix filler with a microbial film is placed in the barrel body, and a reserved space is provided above the matrix filler to place plants;

The water inlet pipe leads to the top of the bucket body, and a water inlet valve is arranged on the water inlet pipe;

The water outlet pipe is arranged at the bottom of the bucket body, and a water outlet valve is arranged on the water outlet pipe;

J-shaped pipe, the short end of the J-shaped pipe is detachably connected to the outlet pipe, and a screen is provided at the short end of the J-shaped pipe; the long end of the J-shaped pipe extends to the direction of the top of the barrel, And the long part of the J-shaped tube and the barrel are juxtaposed with each other.

Further, the constructed wetland matrix filler includes a cobblestone cushion layer, a large-grain gravel layer and a small-grain gravel layer stacked sequentially from bottom to top, and a microbial film is wrapped on the surface of the pebbles.

Further, the small gravel layer adopts gravels with a particle size of 3 to 6 mm with a thickness of 18 cm; the large gravel layer adopts gravels with a particle size of 6 to 9 mm with a thickness of 42 cm; particle size pebbles.

Further, the small gravel layer adopts gravels with a particle size of 9 to 12 mm in thickness of 18 cm; the large gravel layer adopts gravels with a particle size of 12 to 15 mm in thickness of 42 cm; Grain-sized cobblestone underlayment.

Further, the short end of the J-shaped pipe is screwed and connected to the outlet pipe through threads.

Further, the sieve adopts a 300-mesh stainless steel mesh sieve to collect solid particles.

Further, the radius of the screen is greater than the radius of the inner wall of the J-shaped tube and smaller than the radius of the outer wall of the J-shaped tube, and is erected on the top of the tube wall.

Further, a peristaltic pump is connected to the water inlet pipe.

Further, a heating wire is wound outside the barrel.

The beneficial effect of adopting this technical solution:

The utility model is detachably connected to the water outlet at the bottom of the bucket body by adopting a J-shaped tube, so that the water outlet end is led to be flush with the water surface in the bucket body, so that as much water enters the water inlet end, as much water can be discharged from the water outlet end , so as to ensure the consistent flow of water in and out, and avoid the internal environment of the barrel from being affected by the water flow. However, considering the high density of microplastics and the J-shaped tube is too long, solid particles will accumulate in the J-shaped tube, so a screen is set at the short end to filter out the microplastics, and then the filtered water will overflow from the outlet of the U-shaped tube .

The water inlet and outlet of the utility model are equipped with valves so as to facilitate the control of water in and out and the flow of water out.

Description of drawings

Fig. 1 is a structural schematic diagram of a vertical flow constructed wetland simulation device of the present invention;

Fig. 2 is a schematic diagram of the connection structure between the J-shaped pipe and the water outlet pipe in the embodiment of the utility model;

Fig. 3 is the cooperative schematic diagram of J-shaped pipe and screen cloth in the utility model embodiment;

Wherein, 1 is barrel body, 2 is matrix filler, 3 is water inlet pipe, 4 is water inlet valve, 5 is water outlet pipe, 6 is water outlet valve, 7 is J-shaped pipe, 8 is screen, and 9 is screw thread.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further elaborated below in conjunction with the accompanying drawings.

In this embodiment, as shown in Fig. 1-Fig. 2, a vertical flow artificial wetland simulation device includes:

The barrel body 1 is used as a constructed wetland simulation carrier, and a matrix filler 2 with a microbial film is placed in the barrel body 1, and a reserved space is provided above the matrix filler 2 to place plants;

The water inlet pipe 3 leads to the top of the barrel body 1, and the water inlet pipe 3 is provided with a water inlet valve 4;

The water outlet pipe 5 is arranged at the bottom of the bucket body 1, and the water outlet pipe 5 is provided with a water outlet valve 6;

J-shaped pipe 7, the short end of J-shaped pipe 7 is detachably connected with outlet pipe 5, and screen cloth 8 is provided at the short portion port of J-shaped pipe 7; the long portion end of described J-shaped pipe 7 extends to It is in the direction of the top end of the barrel body 1, and the long part of the J-shaped pipe 7 is parallel to the barrel body 1.

Specifically, the barrel body 1 is made of organic glass with a radius of 18 cm and a height of 100 cm. Each barrel 1 is pre-filled with matrix layers of different particle sizes and depths according to the experimental requirements, and the microbial film is maintained in the matrix layer to simulate the constructed wetland matrix.

As an optimization scheme of the above-mentioned embodiment, the constructed wetland matrix filler 2 includes a cobblestone cushion layer, a large-grained gravel layer and a small-grained gravel layer stacked sequentially from bottom to top, and a microbial film is wrapped on the surface of the pebbles.

Option 1, the small-grained gravel layer adopts gravels with a particle size of 18 cm thick and 3-6 mm; the large-grained gravel layer adopts gravels with a particle size of 42 cm thick and 6-9 mm; trail of pebbles.

Option two, the small-grained gravel layer adopts gravels with a particle size of 9 to 12 mm with a thickness of 18 cm; the large-grained gravel layer adopts gravels with a particle size of 12 to 15 mm with a thickness of 42 cm; Path of cobblestone cushion.

As an optimized solution of the above-mentioned embodiment, the short end of the J-shaped pipe 7 is screwed and connected to the outlet pipe 5 through a screw thread 9 .

The sieve 8 adopts a 300-mesh stainless steel mesh sieve to collect solid particles.

The radius of the screen 8 is greater than the radius of the inner wall of the J-shaped tube 7 and smaller than the radius of the outer wall of the J-shaped tube 7, and is erected on the top of the tube wall. As shown in FIG. 3 , R _D < R _W < R _De .

As an optimized solution of the above embodiment, a peristaltic pump is connected to the water inlet pipe 3 . Water is supplied by a peristaltic pump and the inflow is controlled. One end of the hose is connected to tap water or synthetic wastewater added with microplastics, and the other end of the hose extends into the barrel 1 from the valve at the top of the barrel 1.

As an optimized solution of the above embodiment, a heating wire is wound outside the barrel body 1 . It can heat the barrel body 1, and the electric heating ribbon has a temperature controller (the temperature control range is -55 ~ 110 ℃), so that it can ensure the successful cultivation of microbial film in the humid and cold climate all the year round, otherwise it will not be able to support microorganisms if it is too cold .

In order to better understand the utility model, a complete description is made to the working principle of the utility model below:

①Each bucket body 1 is supplied with water by a peristaltic pump and controls the inflow flow. Connect one end of the hose to tap water or synthetic wastewater with added microplastics (according to the content of microplastics in rainwater, set the concentration of microplastics in tap water or synthetic wastewater to 30particlas /L), the other end of the hose extends into the barrel 1 from the valve at the top of the barrel 1.

②Close the valve at the lower end of barrel body 1. According to the demand of the vertical flow constructed wetland, the hydraulic load is designed to be 0.8m/d, and the peristaltic pump is started to transport the liquid into the barrel 1 to feed the constructed wetland. When the liquid level is 5cm higher than the top layer of the matrix, slowly open the valve at the lower end of barrel 1, and control the flow at the lower end to be the same as the flow rate of the peristaltic pump at the top, so as to ensure that the liquid passes through barrel 1 from top to bottom while maintaining a stable liquid level.

③A J-shaped tube is placed under each bucket body 1, and a 300-mesh 48 μm stainless steel mesh screen is placed at the short end of the J-shaped tube to collect solid particles (microplastics). The solid particles on the mesh screen are collected for detection every five days.

The specific mechanism of removing microplastics in constructed wetlands is to flocculate and precipitate microplastic particles in the liquid through the interception of the matrix, the adsorption of microbial films, and the influence of animals and plants, so as to achieve the removal effect.

The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the industry should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (9)

1. A vertical flow constructed wetland simulation device, characterized in that it comprises: The barrel body (1) is used as a constructed wetland simulation carrier, and a matrix filler (2) with a microbial film is placed in the barrel body (1), and a reserved space is provided above the matrix filler (2) to place plants; The water inlet pipe (3) leads to the top of the bucket body (1), and the water inlet pipe (3) is provided with a water inlet valve (4); The water outlet pipe (5) is arranged at the bottom of the bucket body (1), and the water outlet pipe (5) is provided with a water outlet valve (6); J-shaped pipe (7), the short end of the J-shaped pipe (7) is detachably connected to the outlet pipe (5), and a screen (8) is provided at the short end of the J-shaped pipe (7); The long end of the J-shaped pipe (7) extends to the direction of the top end of the barrel body (1), and the long portion of the J-shaped pipe (7) and the barrel body (1) are juxtaposed with each other. 2. A vertical flow constructed wetland simulation device according to claim 1, characterized in that, the matrix filler (2) of the constructed wetland comprises a cobblestone cushion layer, a large gravel layer and a small gravel layer stacked in sequence from bottom to top layer, and a microbial film is wrapped on the surface of the stone. 3. A vertical flow artificial wetland simulation device according to claim 2, characterized in that, the small-grained gravel layer adopts 18cm-thick gravels with a particle size of 3-6mm; Gravels with a particle size of 9 mm; the cobblestone cushion layer adopts pebbles with a particle size of 20 to 40 mm and a thickness of 5 cm. 4. A kind of vertical flow constructed wetland simulation device according to claim 2, characterized in that, the small-grained gravel layer adopts gravels with a thickness of 9 to 12 mm in diameter with a thickness of 18 cm; Gravel with a particle size of 15mm; the cobblestone cushion layer adopts a 5cm thick pebble cushion layer with a particle size of 20-40mm. 5. A vertical flow artificial wetland simulation device according to claim 1, characterized in that, the short end of the J-shaped pipe (7) is screwed and connected to the outlet pipe (5) through a screw thread (9). 6 . A vertical flow artificial wetland simulation device according to claim 1 , characterized in that, the screen ( 8 ) adopts a 300-mesh stainless steel mesh screen to collect solid particles. 7 . 7. A vertical flow artificial wetland simulation device according to claim 1 or 6, characterized in that the radius of the screen (8) is greater than the radius of the inner wall of the J-shaped pipe (7) and smaller than the outer wall of the J-shaped pipe (7) Radius, erected at the top of the pipe wall. 8. A vertical flow artificial wetland simulation device according to claim 1, characterized in that a peristaltic pump is connected to the water inlet pipe (3). 9. A vertical flow artificial wetland simulation device according to claim 1, characterized in that, an electric heating wire is wound outside the barrel body (1).