CN111233161A - A Constructed Wetland Sewage Treatment Device - Google Patents

Abstract

The invention discloses an artificial wetland sewage treatment device, which comprises a distribution tank, a wave-shaped undercurrent treatment area, a middle tank, a vertical undercurrent treatment area and a water collecting tank which are sequentially arranged and communicated along a horizontal plane; a plurality of layers of first filling baskets are arranged in the wave-shaped undercurrent treatment area, so that sewage flows from top to bottom in a snake-shaped flow path; and a plurality of layers of second filling baskets are arranged in the vertical undercurrent processing area, an upper water distribution pipe and a lower water distribution pipe are respectively arranged at the top and the bottom of the vertical undercurrent processing area, and the upper water distribution pipe and the lower water distribution pipe are communicated with the middle pool and the water collecting pool, so that sewage passes through the plurality of layers of second filling baskets from top to bottom or from bottom to top. The wave-shaped undercurrent treatment area enables the sewage to be fully contacted with the upper-layer filler, so that the sewage treatment effect is improved; the vertical underflow processing area realizes the structure of the vertical underflow processing area, so that the filtering modes of sewage from top to bottom or from bottom to top are flexibly switched.

Description

A Constructed Wetland Sewage Treatment Device

technical field

The invention belongs to the technical field of wetland sewage treatment, and in particular relates to an artificial wetland sewage treatment device.

Background technique

Wetlands are the transition zone between land and water, and together with forests and oceans, they are the three major ecosystems in the world. Wetlands are not only places for wild animals and plants to grow and reproduce, but also wetlands can maintain moisture, regulate climate, and effectively purify sewage.

Constructed wetlands are artificially simulated ecosystems that purify sewage through physical, chemical and biological synergy. Constructed wetlands are a special ecosystem composed of substrates, plants, microorganisms, and man-made combinations. Compared with traditional treatment methods, constructed wetlands have the advantages of simple operation, low maintenance cost, large load, and high ecological and environmental benefits.

Constructed wetlands are divided into surface flow and subsurface flow constructed wetlands. Surface flow constructed wetlands refer to constructed wetlands in which sewage flows on the surface of the substrate and flows horizontally from the inlet end to the outlet end of the model surface. Surface-flow constructed wetlands are aerobic constructed wetlands. The surface layer of the wetland plays a major role in removing pollutants, mainly by microorganisms and plants on the surface of plants to remove pollutants. Surface-flow constructed wetlands have the advantages of less investment and simple operation, but surface-flow constructed wetlands have Due to the disadvantages of large area, poor sanitation, and great seasonal influence, most of the sewage in surface flow wetlands has flowed out of the wetland without sufficient contact with plant roots. Subsurface constructed wetland refers to the flow of sewage inside the wetland, which belongs to the anaerobic constructed wetland. In the process of sewage flowing through the wetland, this wetland system makes full use of the retention and adsorption of the substrate and the removal of pollutants by plants, and can fully contact the substrate and plants, and make full use of the synergistic treatment effect of the wetland plants and the substrate. Because the sewage flows under the surface, the wetland has a better thermal insulation effect, is less affected by seasonal changes, and has better sanitation conditions.

Existing surface-flow constructed wetlands and sub-flow constructed wetlands have the problem of clogging. To replace the fillers, all the original fillers will be dug out, which is time-consuming and labor-intensive, destroys the original wetland structure, and destroys the ecological balance.

Therefore, it is expected to develop a constructed wetland sewage treatment device with simple structure, good sewage filtering effect and replaceable use.

SUMMARY OF THE INVENTION

In order to achieve the above object, the present invention proposes a constructed wetland sewage treatment device to solve the problems raised in the above background technology.

The present invention provides the following technical solutions:

A constructed wetland sewage treatment device, comprising a water distribution tank, a waveform undercurrent treatment area, an intermediate tank, a vertical underflow treatment area and a water collection tank arranged and connected in sequence along a horizontal plane;

A multi-layer first stuffing basket is arranged in the waveform undercurrent treatment area, so that the sewage flows from top to bottom in a serpentine flow path;

The vertical underflow treatment area is provided with a multi-layered second stuffing basket, and the top and bottom of the vertical underflow treatment area are respectively provided with an upper layer water distribution pipe and a lower layer water distribution pipe, and the upper layer water distribution pipe and the lower layer water distribution pipe are operably connected with each other. The intermediate tank is communicated with the water collecting tank, so that the sewage passes through the multi-layer second stuffing basket from top to bottom or from bottom to top.

Preferably, the bottom plates of a part of the first stuffing baskets are orifice plates, and the bottom plates of the rest of the first stuffing baskets are solid plates, so as to form the serpentine flow path.

Preferably, the fillers in the first filler basket and the second filler basket include at least one of volcanic rock, zeolite, ceramsite, and gravel.

Preferably, at least three layers of second stuffing baskets are arranged in the vertical underflow treatment area.

Preferably, a water distribution hole is provided above one side of the water distribution tank, and the water distribution hole is communicated with the waveform undercurrent treatment area. When the water level is higher than the water distribution hole, sewage flows into the water distribution tank from the water distribution tank. The waveform undercurrent processing area.

Preferably, a water inlet hole is provided under one side of the intermediate tank, and the water inlet hole communicates with the waveform undercurrent treatment area;

The bottom of the intermediate tank is provided with an intermediate return pump for drawing out the sewage in the intermediate tank.

Preferably, the upper layer water distribution pipe is surrounded by orifice plates, the upper layer water distribution pipe runs through the vertical underflow treatment area, and one end communicates with the water collection tank and the other end communicates with the intermediate tank. The upper layer water distribution pipe The two ends of the upper pipe are respectively provided with the upper pipe water distribution valve and the upper pipe water collection valve.

Preferably, the lower water distribution pipe is U-shaped, the straight pipes on both sides of the lower water distribution pipe are respectively arranged in the intermediate tank and the water collecting tank, and the two nozzles of the lower water distribution pipe are respectively provided with lower layers Pipe water distribution valve and lower pipe water collection valve.

Preferably, a tail water return pump is provided at the bottom end of the side wall of the sump.

Preferably, an isolation net is provided under the bottom second packing basket of the vertical underflow treatment area to isolate the packing from contacting the lower water distribution pipe.

The beneficial effects of the present invention are:

1. The setting of the stuffing basket is flexible and convenient. If you want to replace the part of the stuffing, you can take out that part of the stuffing basket for replacement, and it will not destroy the original state of the wetland and maintain the ecological balance.

2. The corrugated underflow treatment area realizes a serpentine water flow path through the permeable structure of the bottom of the packing basket, so that the sewage is fully contacted with the upper layer of filler, and then flows down layer by layer, and the water flow path is extended, so that the sewage and the filler are fully contacted, and the problem of blockage of the lower layer of filler is solved. Improve sewage treatment effect.

3. The vertical subsurface flow treatment area is used in conjunction with the upper layer water distribution pipe and the lower layer water distribution pipe to realize the structure of the vertical subsurface flow treatment area, so that the sewage can be flexibly switched from top to bottom or bottom to top. In the vertical underflow treatment area, an isolation net is set to avoid direct contact between the lower water distribution pipe and the filler, and to prevent pipeline blockage.

4. There are return pumps in both the intermediate pool and the sump to realize the return circulation of sewage, improve the effect of sewage treatment, save energy and protect the environment.

The apparatus of the present invention has other features and advantages which will be apparent from the drawings and the subsequent detailed description incorporated herein or from the drawings and the subsequent detailed description incorporated herein. These drawings and the detailed description are collectively used to explain certain principles of the invention.

Description of drawings

The above and other objects, features and advantages of the present invention will become more apparent from the more detailed description of the exemplary embodiments of the present invention in conjunction with the accompanying drawings, in which the same reference numerals generally refer to the same parts .

FIG. 1 shows a schematic structural diagram of a constructed wetland sewage treatment device according to an embodiment of the present invention.

Description of reference numbers:

1. Water distribution tank; 2. Wave underflow treatment area; 3. Intermediate tank; 4. Vertical underflow treatment area; 5. Water collection tank; 6. Upper water distribution pipe; 7. Lower water distribution pipe; , lower pipe water distribution valve; 10, upper pipe water collection valve; 11, lower pipe water collection valve; 12, isolation network; 13, intermediate return pump; 14, tail water return pump.

Detailed ways

The present invention will be described in more detail below with reference to the accompanying drawings. While preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

A constructed wetland sewage treatment device according to the present invention comprises a water distribution tank, a waveform undercurrent treatment area, an intermediate tank, a vertical underflow treatment area and a water collection tank arranged and connected in sequence along the horizontal plane;

A multi-layer first packing basket is arranged in the waveform undercurrent treatment area, so that the sewage flows from top to bottom in a serpentine flow path;

A multi-layer second stuffing basket is arranged in the vertical underflow treatment area. The top and bottom of the vertical underflow treatment area are respectively provided with an upper layer water distribution pipe and a lower layer water distribution pipe. , so that the sewage passes through the multi-layer second filling basket from top to bottom or from bottom to top.

Specifically, the corrugated underflow treatment area realizes a serpentine water flow path through the permeable structure of the bottom of the packing basket, so that the sewage is fully contacted with the upper layer of filler to improve the sewage treatment effect. The structure of the vertical underflow treatment area enables flexible switching of the filtering method of sewage from top to bottom or bottom to top. The setting of the stuffing basket is flexible and convenient. If you want to replace the part of the stuffing, you can take out that part of the stuffing basket for replacement, and it will not destroy the original state of the wetland and maintain the ecological balance.

As a preferred solution, the bottom plates of a part of the first packing baskets are orifice plates, and the bottom plates of the rest of the first packing baskets are solid plates, so as to form a serpentine flow path.

Specifically, the sewage flows down layer by layer, so that the water flow path is extended, the sewage and the filler are fully contacted, the problem of blockage of the lower layer filler is solved, and the effect of sewage treatment is improved.

As a preferred solution, the fillers in the first filler basket and the second filler basket include at least one of volcanic rock, zeolite, ceramsite, and gravel.

Specifically, the upper fillers in the first filler basket and the second filler basket are set as fillers with small particle size, and at least one of the aquatic plants reed, iris, iris, and calamus is planted.

As a preferred solution, at least three layers of second stuffing baskets are arranged in the vertical underflow treatment area.

As a preferred solution, a water distribution hole is provided above one side of the water distribution tank, and the water distribution hole is connected to the waveform undercurrent treatment area. When the water level is higher than the water distribution hole, the sewage flows from the distribution tank into the waveform undercurrent treatment area.

As a preferred solution, a water inlet hole is provided under one side of the intermediate tank, and the water inlet hole is connected with the waveform undercurrent treatment area;

The bottom of the intermediate tank is provided with an intermediate return pump, which is used to lead out the sewage in the intermediate tank.

Specifically, the qualified water filtered in the intermediate tank is led out from the intermediate return pump, and can be used according to other needs, so as to save energy and protect the environment.

As a preferred solution, the upper water distribution pipe is surrounded by orifice plates, the upper water distribution pipe runs through the vertical underflow treatment area, and one end is connected to the water collecting tank, and the other end is connected to the middle tank, and the upper water distribution pipe is provided at both ends with the upper pipe water distribution valve. Water collection valve with upper pipe.

As a preferred solution, the lower water distribution pipe is U-shaped, the straight pipes on both sides of the lower water distribution pipe are respectively set in the middle tank and the water collection tank, and the two nozzles of the lower water distribution pipe are respectively provided with the lower pipe water distribution valve and the lower pipe water collection. valve.

As a preferred solution, the bottom end of the side wall of the sump is provided with a tail water return pump.

Specifically, a return pump is provided in the sump to realize the return circulation of sewage, improve the effect of sewage treatment, save energy and protect the environment.

As a preferred solution, an isolation net is provided below the bottom second packing basket in the vertical underflow treatment area to isolate the packing from contacting the lower water distribution pipe.

Specifically, in the vertical underflow treatment area, an isolation net is arranged to avoid direct contact between the lower water distribution pipe and the filler, and to prevent pipeline blockage.

Example:

FIG. 1 shows a schematic structural diagram of a constructed wetland sewage treatment device according to an embodiment of the present invention.

1, the constructed wetland sewage treatment device includes: a distribution tank 1, a waveform undercurrent treatment area 2, an intermediate tank 3, a vertical underflow treatment area 4 and a collection tank 5, which are arranged and connected in sequence along the horizontal plane;

A multi-layer first packing basket is arranged in the waveform undercurrent treatment area 2, so that the sewage flows from top to bottom in a serpentine flow path;

The vertical underflow treatment area 4 is provided with multiple layers of second stuffing baskets. The top and bottom of the vertical underflow treatment area 4 are respectively provided with an upper layer water distribution pipe 6 and a lower layer water distribution pipe 7. The upper layer water distribution pipe 6 and the lower layer water distribution pipe 7 are operably connected to The intermediate tank 3 is communicated with the water collecting tank 5, so that the sewage passes through the multi-layer second filling basket from top to bottom or from bottom to top.

The bottom plates of a part of the first packing baskets are orifice plates, and the bottom plates of the remaining first packing baskets are solid plates, thereby forming a serpentine flow path.

Wherein, the fillers in the first filler basket and the second filler basket include at least one of volcanic rock, zeolite, ceramsite, and gravel.

Wherein, at least three layers of second stuffing baskets are arranged in the vertical underflow treatment area 4 .

Wherein, there is a water distribution hole above one side of the water distribution tank 1, and the water distribution hole communicates with the waveform undercurrent treatment area 2. When the water level is higher than the water distribution hole, the sewage flows from the distribution tank 1 into the waveform undercurrent treatment area 2.

Wherein, a water inlet hole is provided under one side of the intermediate pool 3, and the water inlet hole is communicated with the waveform undercurrent treatment area 2;

The bottom of the intermediate tank 3 is provided with an intermediate return pump 13 for drawing out the sewage in the intermediate tank.

The upper layer water distribution pipe 6 is surrounded by orifice plates, the upper layer water distribution pipe 6 runs through the vertical underflow treatment area 4, and one end is communicated with the sump 5, and the other end is communicated with the intermediate pool 3, and the upper layer water distribution pipe 6 is provided with an upper layer at both ends. Pipe water distribution valve 8 and upper pipe water collection valve 10.

Wherein, the lower layer water distribution pipe 7 is U-shaped, the two straight pipes on both sides of the lower layer water distribution pipe 7 are respectively arranged in the intermediate tank 3 and the water collecting tank 5, and the two nozzles of the lower layer water distribution pipe 7 are respectively provided with the lower layer pipe water distribution valve 9 and Lower pipe water collection valve 11.

The bottom end of the side wall of the water collecting tank 5 is provided with a tail water return pump 14 .

Wherein, an isolation net 12 is provided below the bottom second packing basket of the vertical underflow treatment area 4 to isolate the packing from contacting the lower water distribution pipe 7 .

The working process of the constructed wetland sewage treatment device is as follows: when the water level in the distribution tank is higher than the water distribution hole, the sewage flows from the water distribution hole to the waveform undercurrent treatment area, and in the waveform undercurrent treatment area, the permeable structure of the bottom of the filling basket realizes the downward flow layer by layer. The serpentine water flow path, when the water flows to the last layer of the waveform undercurrent treatment area, it enters the intermediate tank from the inlet hole, and the water in the intermediate tank is drawn out for reuse if it is qualified; if the water in the intermediate tank is unqualified, it enters the vertical tank The subsurface flow treatment area is re-filtered. When the vertical subsurface flow treatment area works from bottom to top, open the water distribution valve of the lower pipe and close the water distribution valve of the upper pipe, open the water collection valve of the upper pipe and close the water collection valve of the lower pipe; when When the vertical subsurface flow treatment area works from top to bottom, open the upper pipe water distribution valve and close the lower pipe water distribution valve, open the lower pipe water collection valve and close the upper pipe water collection valve, and complete the filtration of the vertical submerged flow treatment area. The water enters the sump, and at this time, if the water in the sump is unqualified, it will be led out from the tail water return pump to the intermediate pool and/or the distribution pool for recirculation treatment. Until the water is qualified after filtration, it is led out from the tail water return pump for reuse.

Various embodiments of the present invention have been described above, and the foregoing descriptions are exemplary, not exhaustive, and not limiting of the disclosed embodiments. Numerous modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims (10)

1. a constructed wetland sewage treatment device, is characterized in that, comprises the distribution pool, the waveform underflow treatment area, the intermediate pool, the vertical underflow treatment area and the sump which are arranged and communicated in sequence along the horizontal plane; A multi-layer first stuffing basket is arranged in the waveform undercurrent treatment area, so that the sewage flows from top to bottom in a serpentine flow path; The vertical underflow treatment area is provided with a multi-layered second stuffing basket, and the top and bottom of the vertical underflow treatment area are respectively provided with an upper layer water distribution pipe and a lower layer water distribution pipe, and the upper layer water distribution pipe and the lower layer water distribution pipe are operably connected with each other. The intermediate tank is communicated with the water collecting tank, so that the sewage passes through the multi-layer second stuffing basket from top to bottom or from bottom to top. 2 . The constructed wetland sewage treatment device according to claim 1 , wherein the bottom plates of a part of the first packing baskets are orifice plates, and the bottom plates of the other first packing baskets are solid plates, thereby forming the serpentine flow path. 3 . 3 . The constructed wetland sewage treatment device according to claim 1 , wherein the fillers in the first packing basket and the second packing basket comprise at least one of volcanic rock, zeolite, ceramsite, and gravel. 4 . 4 . The constructed wetland sewage treatment device according to claim 1 , wherein at least three layers of second stuffing baskets are arranged in the vertical underflow treatment area. 5 . 5 . The constructed wetland sewage treatment device according to claim 1 , wherein a water distribution hole is provided above one side of the water distribution pool, and the water distribution hole is communicated with the waveform undercurrent treatment area. When the water level is high During the water distribution hole, the sewage flows into the waveform undercurrent treatment area from the water distribution tank. 6. The constructed wetland sewage treatment device according to claim 1, wherein a water inlet hole is provided under one side of the intermediate pool, and the water inlet hole is communicated with the waveform undercurrent treatment area; The bottom of the intermediate tank is provided with an intermediate return pump for drawing out the sewage in the intermediate tank. 7 . The constructed wetland sewage treatment device according to claim 1 , wherein the upper layer water distribution pipe is surrounded by orifice plates, the upper layer water distribution pipe runs through the vertical underflow treatment area, and one end is connected to the sump. 8 . The other end is communicated with the intermediate tank, and both ends of the upper-layer water distribution pipe are respectively provided with an upper-layer pipe water distribution valve and an upper-layer pipe water-collecting valve. 8 . The constructed wetland sewage treatment device according to claim 1 , wherein the lower layer water distribution pipe is U-shaped, and the straight pipes on both sides of the lower layer water distribution pipe are respectively arranged in the intermediate pool and the water collecting pool. 9 . Among them, the two nozzles of the lower water distribution pipe are respectively provided with a lower pipe water distribution valve and a lower pipe water collection valve. 9 . The constructed wetland sewage treatment device according to claim 1 , wherein a tail water return pump is provided at the bottom end of the side wall of the sump. 10 . 10 . The constructed wetland sewage treatment device according to claim 1 , wherein an isolation net is provided under the bottom second packing basket of the vertical underflow treatment area to isolate the packing and the lower water distribution pipe. 11 .

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