CN209853839U

CN209853839U - Bottom-aerated constructed wetland

Info

Publication number: CN209853839U
Application number: CN201920632885.5U
Authority: CN
Inventors: 吴芳芳; 叶振坤; 杨琳; 李之镭; 陈学峰; 胡家朋; 林皓
Original assignee: Wuyishan Blue Sky Environmental Protection Technology Co Ltd; Wuyi University
Current assignee: Wuyishan Blue Sky Environmental Protection Technology Co Ltd; Wuyi University
Priority date: 2019-05-06
Filing date: 2019-05-06
Publication date: 2019-12-27
Anticipated expiration: 2029-05-06

Abstract

The utility model discloses a constructed wetland of bottom aeration, including the cell body, the cell body disposes inlet tube and outlet pipe, the inlet tube can by the top injected water of cell body, be provided with the matrix in the cell body, the matrix is from top to bottom including fine sand soil layer, nutrition soil layer and goose cobble layer, plant on the matrix, still be provided with the aeration pipe in the cell body, the aeration pipe is in the below of matrix transversely extends, interval arrangement has a plurality of aeration dishes on the aeration pipe, the outlet pipe is located the lower part of the lateral wall of cell body. The utility model discloses, be convenient for handle sewage with low costs, high quality.

Description

Bottom-aerated constructed wetland

Technical Field

The utility model relates to a wetland field particularly, relates to a constructed wetland of bottom aeration.

Background

The water resource of China is always in a very scarce state, the water consumption is continuously increased every year, the discharge amount of the wastewater is increased day by day, the treatment amount of the domestic sewage is large, the cost is high, and therefore, the process for treating the domestic sewage at low cost is an important means for preventing and treating the environmental pollution and realizing the sustainable development of the water resource, and has important significance. The northern area of the Min has larger free area, and the artificial wetland technology has landscape and ecological functions, so the improvement of the artificial wetland technology and the research on the novel combined artificial wetland technology for treating the domestic sewage have great significance.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a bottom aeration constructed wetland, which can treat sewage at low cost and has strong purification capacity, aiming at the defects existing in the prior art.

In order to solve the technical problem, the technical scheme of the utility model lies in: the utility model provides a constructed wetland of bottom aeration, includes the cell body, the cell body disposes inlet tube and outlet pipe, the inlet tube can by the top injected water of cell body, be provided with the matrix in the cell body, the matrix is from top to bottom including fine sand soil layer, nutrition soil layer and cobble layer, plant on the matrix, still be provided with the aeration pipe in the cell body, the aeration pipe is in the below lateral extension of matrix, interval arrangement has a plurality of aeration discs on the aeration pipe, the outlet pipe is located the lower part of the lateral wall of cell body.

Preferably, the tank body is rectangular.

Preferably, a flow guide wall is arranged in the tank body and is positioned between the water inlet pipe and the water outlet pipe.

Preferably, the guide walls are arranged along the width direction of the tank body, the number of the guide walls is two, one of the guide walls is connected with the front side wall of the tank body, and the other guide wall is connected with the rear side wall of the tank body.

Preferably, the length of the guide wall is 0.5 to 0.8 times of the width of the tank body.

Preferably, the plant is one or more of reed, canna, thaliana, chlorophytum comosum and cress.

Preferably, the cobble layer is two-layer about, wherein the cobble of upper strata cobble layer is less than the cobble of lower floor's cobble layer.

Preferably, the distance between the aeration pipe and the bottom wall of the tank body is 50-100 mm.

The bottom aeration artificial wetland of the utility model has the following beneficial effects: the utility model has reasonable structure, combines emergent aquatic plants, phytoplankton and submerged plants to treat sewage, and realizes the innovation of the structural design of the composite constructed wetland system; the planted plants of the utility model adopt reed, canna, Thalia dealbata, chlorophytum comosum and cress, and are suitable for the climatic conditions of the area in the south of Yangtze river; the utility model discloses, can form biomembrane reinforcing treatment effect on the surface of packing after adding the aeration.

Drawings

The following description refers to the accompanying drawings, in which:

FIG. 1 is a top view of the bottom-aerated constructed wetland of the present invention;

fig. 2 is a sectional view taken along line a-a of fig. 1.

In the figure, the position of the upper end of the main shaft,

1-a pool body; 2-water inlet pipe; 3-water outlet pipe; 4-an aerator pipe; 5-an aeration disc; 6-fine sand soil layer; 7-a nutrient soil layer; 8-cobblestone layer; 9-big cobble layer; 10-guide wall; 11-plant.

Detailed Description

In order to facilitate understanding of the technical problems, technical solutions and technical effects solved by the present invention, the present invention will be described in detail with reference to specific embodiments.

The bottom aeration constructed wetland of the utility model can solve the defects of small hydraulic load, limited purification capacity and poor sanitary condition of the traditional single type constructed wetland.

Referring to fig. 1-2, the bottom-aerated constructed wetland of the present invention comprises a tank body 1, wherein the tank body 1 is provided with a water inlet pipe 2, a water outlet pipe 3, a matrix, a plant 11, an aeration pipe 4, etc. Preferably, the tank body 1 is rectangular.

As shown in fig. 1 and fig. 2, the water inlet pipe 2 is suspended above the tank body 1 and can inject water from above the tank body 1, specifically, the water inlet pipe 2 may be at a vertical distance of 100mm and 200mm from the substrate.

A substrate is arranged in the tank body 1 and comprises a fine sand soil layer 6, a nutrient soil layer 7 and a cobble layer from top to bottom. Preferably, the utility model discloses in, the cobble layer is two-layer about being, and wherein the cobble on upper strata cobble layer is less than the cobble on lower floor's cobble layer, and the upper strata is little cobble layer 8 promptly, and the lower floor is big cobble layer 9. The utility model discloses in, fine sand soil layer 6 highly can be 200mm, and nutrition soil layer 7 highly can be 100mm, and little cobble layer 8 highly can be 200mm, and big cobble layer 9 highly can be 200 mm.

Plant 11 is planted on the matrix, and is only schematic in the figure, in the utility model, plant 11 is one or more in reed, canna, religious flower, chlorophytum comosum and cress.

Still be provided with aeration pipe 4 in the cell body 1, aeration pipe 4 is at the below horizontal extension of matrix, specifically is in the utility model discloses in, aeration pipe 4 has a plurality of aeration discs 5 along horizontal extension in the below of big cobble layer 9, the interval arrangement on aeration pipe 4. Preferably, the distance between the aeration pipe 4 and the bottom wall of the tank body 1 is 50-100 mm.

The water outlet pipe 3 is positioned at the lower part of the side wall of the tank body 1, and can be spaced from the bottom of the tank body 1 by 30-50mm, for example, so as to collect the treated water.

In addition, a flow guide wall 10 is arranged in the tank body 1 so as to prolong the retention time of the sewage in the tank body 1, and the flow guide wall 10 is positioned between the water inlet pipe 2 and the water outlet pipe 3. Preferably, the guide wall 10 is disposed along the width direction of the tank body 1. The number of the guide walls 10 is two, wherein one guide wall 10 is connected with the front side wall of the tank body 1, and the other guide wall 10 is connected with the rear side wall of the tank body 1. The length of the guide wall 10 is 0.5 to 0.8 times of the width of the pool body 1.

The inside plants and the biomembrane of the reactor decompose the nutrient substances in the wastewater under the action of the utility model, and the nutrient substances are BOD and NH³⁺ _-N, TP has good treatment effect.

When in use, the following operating parameters can be adopted for operation: 100m of water inflow³D; the gradient is 2.5%; the retention time is 6 h; pH 8.

The operation effect is as follows: the average COD inlet concentration is 100mg/L, the average COD concentration after the treatment of the reactor is 7.2mg/L, and the average removal efficiency is up to 92.8 percent.

The utility model discloses rational in infrastructure, combined emergent aquatic plant, phytoplankton and benthophyte collocation get up and handle sewage, have realized the innovation in the structural design of compound constructed wetland system. The utility model discloses the plant of planting adopts reed, canna, makes effort again flower and chlorophytum comosum, cress, is suitable for the climatic conditions in the area of south of the Yangtze river. The utility model can form a biomembrane enhancement treatment effect on the surface of the filler after adding aeration.

Having shown and described the basic principles and essential features of the invention and the advantages thereof, it will be understood by those skilled in the art that the present invention is not limited by the foregoing embodiments, which are described in the foregoing description and drawings, but which are incorporated herein by reference, and that various changes and modifications can be made without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a constructed wetland of bottom aeration, a serial communication port, includes the cell body, the cell body disposes inlet tube and outlet pipe, the inlet tube can by the top injected water of cell body, be provided with the matrix in the cell body, the matrix is including fine sand soil layer, nutrition soil layer and goose cobble layer from top to bottom, plant the plant on the matrix, still be provided with the aeration pipe in the cell body, the aeration pipe is in the below lateral extension of matrix, interval arrangement has a plurality of aeration discs on the aeration pipe, the outlet pipe is located the lower part of the lateral wall of cell body.

2. The bottom-aerated constructed wetland according to claim 1, wherein the tank body is rectangular.

3. The bottom-aerated constructed wetland according to claim 2, wherein a flow guide wall is arranged in the tank body, and the flow guide wall is positioned between the water inlet pipe and the water outlet pipe.

4. The bottom-aerated constructed wetland according to claim 3, wherein the guide walls are arranged along the width direction of the tank body, the number of the guide walls is two, one of the guide walls is connected with the front side wall of the tank body, and the other guide wall is connected with the rear side wall of the tank body.

5. The bottom-aerated constructed wetland according to claim 4, wherein the length of the guide wall is 0.5 to 0.8 times the width of the tank body.

6. The bottom-aerated constructed wetland according to claim 1, wherein the plants are one or more of reed, canna, thaliana, chlorophytum comosum and cress.

7. The bottom-aerated artificial wetland according to claim 1, wherein the cobble layers are two upper layers and two lower layers, wherein the cobbles of the upper cobble layer are smaller than those of the lower cobble layer.

8. The bottom-aerated constructed wetland according to claim 1, wherein the distance between the aeration pipe and the bottom wall of the tank body is 50-100 mm.