阅读说明：本技术 一种稳态流凤眼蓝人工湿地及其运行方法 (Steady-state flow Eichhornia crassipes constructed wetland and operation method thereof ) 是由 徐征和 王荣震 张馨文 丛鑫 于 2021-08-03 设计创作，主要内容包括：本发明属于环境保护领域,涉及一种稳态流凤眼蓝人工湿地及其运行方法,包括：床体3、透水挡板5、砂土层8、凤眼蓝1；所述床体3底部铺设有砂土层8,砂土层8上间隔设置有多组透水挡板5,所述砂土层8上种植有凤眼蓝1与挺水植物2；凤眼蓝1与挺水植物2位于各透水挡板5之间,所述床体3两侧还设置有进水管7、出水管4。本发明将透水挡板和漂浮植物凤眼蓝相结合,抗水流冲击效果好,水流稳定性得到增强,确保了水流冲击作用下湿地对废水的处理效果。(The invention belongs to the field of environmental protection, and relates to a steady-state flow phoenix-eye blue constructed wetland and an operation method thereof, wherein the steady-state flow phoenix-eye blue constructed wetland comprises the following steps: the bed body 3, the permeable baffle 5, the sand layer 8 and the phoenix-eye blue 1; a sand layer 8 is laid at the bottom of the bed body 3, a plurality of groups of permeable baffles 5 are arranged on the sand layer 8 at intervals, and the sand layer 8 is planted with the phoenix-eye blue 1 and the emergent aquatic plants 2; the water hyacinth 1 and the emergent aquatic plants 2 are positioned between the permeable baffles 5, and the two sides of the bed body 3 are also provided with a water inlet pipe 7 and a water outlet pipe 4. The invention combines the permeable baffle with the floating plant of the ailanthus altissima blue, has good effect of resisting water flow impact, enhances the stability of water flow, and ensures the treatment effect of the wetland on wastewater under the action of water flow impact.)

1. A steady-state flow Paeonia ostii constructed wetland is characterized by comprising: a bed body (3), a water permeable baffle (5), a sand layer (8) and a phoenix eye blue (1); a sand layer (8) is paved at the bottom of the bed body (3), a plurality of groups of permeable baffles (5) are arranged on the sand layer (8) at intervals, and the sand layer (8) is planted with the phoenix-eye blue (1) and the emergent aquatic plants (2); the water hyacinth (1) and the emergent aquatic plants (2) are positioned between the permeable baffles (5), and the two sides of the bed body (3) are also provided with a water inlet pipe (7) and a water outlet pipe (4).

2. The steady-state flow Eichhornia crassipes constructed wetland in claim 1 is characterized in that the bed body (3) is rectangular, and grooves (9) are symmetrically arranged on the wall bodies on the two side edges of the bed body.

3. The steady-state Eichhornia crassipes wetland according to claim 1, characterized in that the water permeable baffle (5) is provided with water permeable holes (10) uniformly.

4. The steady-state flow-type Eichhornia crassipes artificial wetland according to claim 3, wherein the water permeable holes (10) are circular or triangular and have an opening density of 400-600 holes/m²。

5. The steady-state flow-phoenix-eye-blue constructed wetland in accordance with claim 1, wherein the positions of the holes (10) on the two water-permeable baffles (5) are staggered.

6. The steady-state flowing water hyacinth artificial wetland according to claim 4, wherein the distance between two connected water permeable baffles (5) is 1-1.5 m.

7. The steady-state flowing water-hyacinth-eye-blue constructed wetland in claim 3 is characterized in that the side edges of the water-permeable baffles (5) are embedded in the grooves (9), and the side surfaces of the water-permeable baffles (5) are fixed with right-angle brackets (12).

8. The steady-state flowing phoenix-eye-blue constructed wetland according to claim 3, characterized in that the horizontal section of the right-angle bracket (12) is provided with ground pins (11).

9. An operation method of a steady-state flow phoenix-eye blue constructed wetland is characterized by comprising the following steps:

sewage enters the wetland system from the water inlet pipe, flows horizontally, sequentially passes through the permeable baffles and the plants growing in the water and is discharged by the water outlet pipe.

10. Use of the steady-state flowabie blue artificial wetland of any one of claims 1 to 8 in agricultural runoff, municipal runoff and industrial wastewater treatment.

Technical Field

The invention belongs to the field of environmental protection, and relates to a steady-state flow phoenix-eye-blue constructed wetland with a built-in water permeable baffle.

Background

The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.

Agricultural runoff, urban runoff, industrial wastewater and the like are all in a non-constant state changing along with time, and the water consumption of families and factories during peak periods and rainfall can be rapidly increased by multiple times in a short time. The change of the inflow water quantity of the runoff treatment artificial wetland can change the retention process and retention time of pollutants, so that the water purification effect of the artificial wetland is influenced. Under the water flow impact, the stability of the water flow in the wetland is poor, the satisfactory effect of treating sewage by using the original wetland design is difficult to achieve, and the improvement is needed.

At present, aiming at the impact of the water inflow, the most common technologies are to configure a regulating tank and A²an/O system, etc. The regulating tank needs a larger floor area, and has higher requirements on the investment of the project; a. the²the/O system consists of three sections of anaerobic, anoxic and aerobic, the process is complex, and the development of the system is limited to a great extent due to higher operation cost.

Disclosure of Invention

In order to overcome the problems, the invention aims to design the steady-state flow phoenix-eye blue constructed wetland with the built-in water permeable baffle, which has the advantages of good water flow impact resistance effect, simple structure, low investment, easy management and operation and no secondary pollution.

In order to achieve the technical purpose, the invention adopts the following technical scheme:

in a first aspect of the invention, a steady-state flow phoenix-eye-blue constructed wetland is provided, which comprises: the bed body 3, the permeable baffle 5, the sand layer 8 and the phoenix-eye blue 1; a sand layer 8 is laid at the bottom of the bed body 3, a plurality of groups of permeable baffles 5 are arranged on the sand layer 8 at intervals, and the sand layer 8 is planted with the phoenix-eye blue 1 and the emergent aquatic plants 2; the water hyacinth 1 and the emergent aquatic plants 2 are positioned between the permeable baffles 5, and the two sides of the bed body 3 are also provided with a water inlet pipe 7 and a water outlet pipe 4.

The research shows that: the permeable baffle and the floating plant of the ailanthus altissima blue have strong impact resistance to water flow, can prolong the contact time of pollutants with plants, matrixes and microorganisms, and strengthen the purification capacity. Therefore, the artificial wetland capable of resisting water flow impact is formed by the permeable baffle and the phoenix-eye blue for the first time.

In a second aspect of the invention, an operation method of a steady-state flow phoenix-eye blue constructed wetland is provided, which comprises the following steps:

sewage enters the wetland system from the water inlet pipe, flows horizontally, sequentially passes through the permeable baffles and the plants growing in the water and is discharged by the water outlet pipe.

In a third aspect of the invention, the application of any one of the steady-state flow phoenix-eye blue constructed wetlands in agricultural runoff, urban runoff and industrial wastewater treatment is provided.

The invention has the beneficial effects that:

the device has the advantages of convenient installation, less investment, low operating cost, easy management and operation and no secondary pollution;

the water permeable baffle can be quickly replaced, the shape and the density of the holes are changed according to the size of the incoming water, and the applicability is strong;

according to the invention, the water permeable baffle and the floating plant eichhornia crassipes are combined, so that the water flow impact resistance effect is good, the water flow stability is enhanced, and the wastewater treatment effect of the wetland under the water flow impact action is ensured.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.

FIG. 1 is a schematic view of a cross-sectional structure of a water permeable baffle built-in Eichhornia crassipes constructed wetland;

FIG. 2 is a top view of the bed body of the Eichhornia crassipes (lour.) Merr artificial wetland;

FIG. 3 is a schematic view of a water permeable baffle;

fig. 4 is a schematic view of a right-angle bracket structure with ground nails.

The water-permeable bed comprises a water inlet pipe, a water outlet pipe, a permeable baffle plate, a water surface, a water inlet pipe, a water outlet pipe, a water inlet hole, a sand layer, a groove, a water outlet pipe, a sand layer, a groove, a water outlet hole, a ground nail, a right-angle support and a water outlet hole, wherein the water inlet pipe is 1, the water inlet pipe is 2, the emergent aquatic plants are 3, the bed body is 4, the water outlet pipe is 5, the permeable baffle plate is 6, the water surface is 7, the water inlet pipe is 8, the sand layer is 9, the groove is 10, the water outlet hole is 11, the ground nail is 12.

Detailed Description

It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

The steady-state flow phoenix-eye-blue constructed wetland with the built-in water-permeable baffle has the advantages of good water flow impact resistance effect, simple structure, less investment, easy management and operation and no secondary pollution.

The invention is realized by the following technical scheme: the steady-state flow phoenix-eye-blue constructed wetland internally provided with the water-permeable baffle comprises a bed body, the water-permeable baffle, a sand layer and the phoenix-eye-blue, wherein the wetland bed body is a cuboid, a water inlet pipe and a water outlet pipe are respectively arranged at the front end and the rear end of the wetland, the wetland bed body is composed of concrete, and the sand layer of 40-60cm is filled at the bottom of the bed body. The edge wall bodies on the two sides of the bed body are uniformly distributed with grooves, the thickness of the grooves is consistent with that of the permeable baffle plates, the baffle plates can be conveniently mounted and dismounted, and the distance between the grooves is 50 cm. The baffle that permeates water be the PVC material, the right angle support of taking ground nail is equipped with to the both sides of baffle bottom of permeating water for fixed baffle that permeates water, ground nail length is about 20 cm. The permeable baffles exceed the sand layer by 1-1.2m, the thickness of the baffles is 1-2cm, permeable holes are uniformly distributed, and the positions of the holes of the adjacent permeable baffles are staggered. The sandy soil layer is sandy loam, the ailanthus altissima is planted on the sandy soil layer, and emergent wetland plants such as thalictrum floribundum, calamus citrina and the like are planted in a matching manner. The plant and the root system thereof not only have the function of blocking water flow, but also have the function of beautifying the environment.

When the water-permeable bed is used, other aquatic plants such as the Eichhornia crassipes and the like are planted firstly, then the water-permeable baffles are placed in the grooves on the wall bodies on the two sides of the bed body, and the ground nails are completely pricked into the sandy soil layer to complete installation. Sewage enters the wetland system from the water inlet pipe, flows horizontally, sequentially passes through the permeable baffles, and the impact of water flow on the wetland system is slowed down by the reduction of the flow velocity of the water flow by the permeable baffles, and the phoenix-eye blue planted between the baffles also has a buffering effect on the water flow, so that the retention time of the sewage in the wetland system is prolonged, and pollutants are fully contacted with plants and microorganisms. The water treated by the system is discharged by a water outlet pipe.

The present invention is described in further detail below with reference to specific examples, which are intended to be illustrative of the invention and not limiting.

Example 1

As shown in attached figures 1-4, the wetland bed body 3 of the invention is of a rectangular structure, the length-width ratio is 3:1, and the front end and the rear end of the wetland are respectively provided with a water inlet pipe 7 and a water outlet pipe 4. The wetland bed body 3 is composed of concrete, the bottom of the bed body is filled with a sandy soil layer 8 of 40-60cm, the sandy soil layer 8 is sandy loam, and emergent aquatic plants 2 such as calamus, thalictrum ramosum and the like are planted on the sandy loam, the planting density is 20 plants/m²Planting floating plant of Eichhornia crassipes (lour.) hand-Mazz 1 on water surface at a planting density of 30 plants/m². The groove 9 on the side wall body at the two sides of the bed body is used for installing the water permeable baffle 5, the water permeable baffle is made of PVC material, the two sides of the bottom of the water permeable baffle are provided with right-angle supports 12, the supports are provided with ground nails 11 for fixing the water permeable baffle, the length of the ground nails is about 20cm, the thickness of the water permeable baffle is 1-2cm, the height of the water permeable baffle exceeds that of a sandy soil layer 8 by about 1-1.2m, circular water permeable holes 10 with the diameter of 2cm are uniformly distributed, and the density of the holes is 600 holes/m²The distance between the adjacent water permeable baffles is 1.5m, the positions of the holes of the adjacent water permeable baffles are staggered, and water flow can be subjected to distribution adjustment once passing through the water permeable baffles, so that the stability of the water flow is greatly improved, and the hydraulic retention time is prolonged.

This system is when dealing with the impact that daily rivers flow fluctuation brought, sewage gets into from bed body 3 inlet tube 7, the level flows through, receive the blockking of phoenix-eye blue 1 and emergent aquatic plant 2 at first, rivers impact is alleviated greatly, behind the baffle 5 that permeates water, rivers can only pass the trompil on the baffle and continue to flow forward, rivers velocity of flow and impact further reduce, block and distribute the regulation back to the impact rivers many times through phoenix-eye blue and the baffle that permeates water, rivers tend to stable, pollutant and matrix, the plant, contact time between the microorganism obtains guaranteeing, the pollutant removal effect under the water impact has been strengthened, water after the system treatment is discharged by outlet pipe 4.

Example 2

The operation method is the same as that of the embodiment 1, when the impact on the wetland system caused by sudden increase of water quantity caused by rainfall is met, the water permeable baffle plates can be replaced in advance, the distance between the adjacent water permeable baffle plates is shortened to 1m, and the opening density is reduced to 400 holes/m²And the shape of the water permeable hole is replaced by a triangle with better water blocking effect, and the side length of the triangle is 2 cm.

It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and equivalents can be made in the technical solutions described in the foregoing embodiments, or equivalents thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.