CN209957481U

CN209957481U - Combined ecological floating bed

Info

Publication number: CN209957481U
Application number: CN201920244803.XU
Authority: CN
Inventors: 达良俊; 倪田品; 宋坤
Original assignee: East China Normal University
Current assignee: East China Normal University
Priority date: 2019-02-27
Filing date: 2019-02-27
Publication date: 2020-01-17
Anticipated expiration: 2029-02-27

Abstract

The utility model provides a modular ecological bed that floats, float the bed unit including at least one, float the bed unit and float on the water, float the frame that the bed unit includes the cube shape, set up a net in the lower floor of frame, place the benthophyte on the net, place emergent aquatic plants on upper frame. The combined ecological floating bed of the utility model can promote the water level of the submerged plant, has simple structure, obvious effect of removing nitrogen and phosphorus in the water body, can improve the transparency of the water body, balance the pH value, beautify the environment, save the cost and the like; a plurality of floating beds can be connected in series in water, so that the best absorption efficiency of plants under different nitrogen and phosphorus concentrations is fully exerted; simultaneously, various aquatic plants are used, thereby achieving the beautiful effect.

Description

Combined ecological floating bed

Technical Field

The utility model belongs to the technical field of ecological construction, concretely relates to modular ecological bed that floats for water eutrophication normal position bioremediation especially is close to into the sea mouth, receives the great river course of morning and evening tides influence.

Background

Eutrophication is a water pollution phenomenon caused by excessive content of nutrient substances such as nitrogen, phosphorus and the like in a water body. It can cause the mass propagation of algae, water body deterioration and fishy smell, and fish suffocation death caused by oxygen deficiency in water. In recent years, with the development of economy, the water resource pollution of China is more and more serious. A large amount of nutrient substances and toxic and harmful substances are discharged into lakes and rivers, the water body has serious eutrophication, and the water quality is gradually deteriorated.

The existing eutrophic water body restoration technology can be physical restoration, chemical restoration and biological restoration. Physical remediation and chemical remediation can quickly solve the existing problem of river pollution, but cannot permanently maintain the water quality condition of the river. Compared with the original physical and chemical repairability, the biological repairability has the advantages of simple facilities, less investment, easy construction, convenient management, environment beautification, wide application range and the like. Currently, constructed wetland restoration and floating bed technology are the most commonly used techniques for phytoremediation. The biological floating bed technology is one of the technologies which are effective, economic and meet the requirements of sustainable development, and is a research and application hotspot in the field of comprehensive treatment of water environment at present.

At the present stage, the main technical body of the biological floating bed is plants. The ability of different plants to remove nitrogen and phosphorus has been studied. Aquatic plants can be divided into three categories: emerging plants, submerged plants and floating plants. Wherein submerged plant has certain requirement to the water level, and the water level is too high, can lead to illumination intensity not enough, and submerged plant can't be fine existence, finally leads to unsatisfactory to the purifying effect in river course.

The coastline degree of China is about 1.8 kilometers, and the coastline degree is the fourth place in the world; the continental shelf area is the fifth in the world, and the 200-nautical exclusive economic area is the tenth in the world. In China, 56 cities draw close to the sea, the river channel is influenced by tides, and the water level change is large. If submerged plants are placed according to the traditional method, the plants can not grow normally due to water level change. In order to further enhance the adaptability of submerged plants in water level change riverways, a breakthrough needs to be made on the structure of the floating bed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the defects in the prior art and providing a combined ecological floating bed.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

a combined ecological floating bed comprises at least one floating bed unit, wherein the floating bed unit floats on a water body and comprises a hexahedron-shaped framework, a net is arranged on the lower layer of the framework, submerged plants are placed on the net, and emergent aquatic plants are placed on the upper layer of the framework.

According to a preferred embodiment of the present invention, the frame is a hollow PVC pipe.

According to the utility model discloses a preferred embodiment, set up the triangular joint of connecting the PVC pipe on eight angles of frame.

According to a preferred embodiment of the present invention, the submerged plant is selected from one or more of the group consisting of horehound, hydrilla verticillata, watermifoil, and hornworts.

According to a preferred embodiment of the present invention, the emergent aquatic plant is selected from one or more of canna, cattail, yellow flag, reed, arundo donax and thalictrum.

According to the preferred embodiment of the present invention, the lower submerged plants are planted at a density of 4-10 plants per square meter.

According to the preferred embodiment of the utility model, 3-5 emergent aquatic plants/m are placed on each PVC pipe on the upper layer.

According to the preferred embodiment of the present invention, the combined ecological floating bed comprises four floating bed units, and the emergent aquatic plants and the submerged plants on the four floating bed units are reed, malysia, arundo donax and hydrilla verticillata, thalictrum repens, watermifera, and watermifoil, cattail, and hornworts, respectively.

Compared with the prior art, the utility model discloses an ecological bed that floats of combination formula has following beneficial effect: the combined ecological floating bed of the utility model can promote the water level of the submerged plant, has simple structure, obvious effect of removing nitrogen and phosphorus in the water body, can improve the transparency of the water body, balance the pH value, beautify the environment, save the cost and the like; a plurality of floating beds can be connected in series in water, so that the best absorption efficiency of plants under different nitrogen and phosphorus concentrations is fully exerted; simultaneously, various aquatic plants are used, thereby achieving the beautiful effect.

Drawings

Fig. 1 is a front view of a floating bed unit of the combined ecological floating bed of the present invention.

Fig. 2 is a top view of the floating bed unit of the combined ecological floating bed of the present invention.

Fig. 3 is a river channel placing diagram of an embodiment of the combined ecological floating bed of the utility model.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

Referring to fig. 1-2, the combined ecological floating bed of the present invention comprises at least one floating bed unit 11, wherein the floating bed unit 11 floats on a water body, the floating bed unit 11 comprises a hexahedron-shaped frame 111, a net 112 is arranged on the lower layer of the frame 111, submerged plants 2 are placed on the net 112, and emergent plants 3 are placed on the upper layer frame 111. The frame 111 is a hollow PVC pipe, and triangular joints 113 connected to the PVC pipe are provided at eight corners of the frame 111.

As a preferred embodiment of the present invention, the submerged plant 2 is selected from one or more of malayan euglena, hydrilla verticillata, watermifoil, and goldfish algae. The planting density of the submerged plants at the lower layer is preferably 4-10 plants per square meter. The emergent aquatic plant 3 is selected from one or more of canna, cattail, yellow flag, reed, arundo donax and thalictrum. 3-5 emergent aquatic plants per meter are placed on each PVC pipe on the upper layer.

According to different emergent aquatic plants and benthophyte to nitrogen phosphorus concentration adaptability and absorptive capacity's difference, can use a plurality of floating bed units 11 in the river course use, place multiple plant, for example the width that whole combination formula ecology floated the bed occupies about one-third of the river course wide. Each floating bed unit 11 is connected and fixed by wires, and the floating bed units 11 on the left and right sides are fixed to the shore by ropes. As shown in fig. 3, different emergent aquatic plants and submerged plants are placed in the four floating bed units 11 for matching. From left to right are: reed, potamogeton malabaricum, giant reed, hydrilla verticillata, thalictrum vulgare, watermifoil, typha and hornworts. The reed and the giant reed can be well adapted to the environment with high nitrogen and phosphorus, have good absorption effect, and are placed in front of the river direction, so that the concentration of nitrogen and phosphorus in water is fully reduced; the adaptability of the Thalia dealbata and the Typha orientalis is poor, but the effect of absorbing nitrogen and phosphorus at low concentration is good, so that the model can be placed behind the river to treat nitrogen and phosphorus after the concentration is reduced, and the aquatic plants can fully adapt to and absorb the nitrogen and phosphorus in water.

The combined ecological floating bed of the utility model can promote the water level of the submerged plant, has simple structure, obvious effect of removing nitrogen and phosphorus in the water body, can improve the transparency of the water body, balance the pH value, beautify the environment, save the cost and the like; a plurality of floating beds can be connected in series in water, so that the best absorption efficiency of plants under different nitrogen and phosphorus concentrations is fully exerted; simultaneously, various aquatic plants are used, thereby achieving the beautiful effect.

The combined ecological floating bed of the utility model can improve the purification effect of the submerged plant in the tidal river channel, and improve the stability of the floating bed to water treatment and the effect of water ecological restoration; compared with the traditional ecological floating bed, the combined ecological floating bed has greatly improved total treatment effect on water.

The embodiments of the present invention are only used for illustration, and do not limit the scope of the claims, and other substantially equivalent alternatives that may be conceived by those skilled in the art are within the scope of the present invention.

Claims

1. The combined ecological floating bed is characterized by comprising at least one floating bed unit, wherein the floating bed unit floats on a water body and comprises a hexahedron-shaped framework, a net is arranged on the lower layer of the framework, submerged plants are placed on the net, and emergent plants are placed on the upper layer of the framework.

2. The combined ecological floating bed according to claim 1, wherein the frame is a hollow PVC pipe.

3. The combined ecological floating bed according to claim 2, wherein triangular joints for connecting PVC pipes are arranged at eight corners of the frame.

4. The combined ecological floating bed according to claim 1, wherein the submerged plants are selected from one or more of horehound equisetum, hydrilla verticillata, watermifoil, and hornworts.

5. The combined ecological floating bed according to claim 1, wherein the emergent aquatic plants are selected from one or more of canna, cattail, acorus calamus, reed, arundo donax and thalictrum ramosissimum.

6. The combined ecological floating bed according to claim 1, wherein the lower submerged plants are planted at a density of 4-10 plants per square meter.

7. The combined ecological floating bed according to claim 1, wherein 3-5 emergent aquatic plants/m are placed on each PVC pipe of the upper layer.

8. The combined ecological floating bed according to claim 1, wherein the combined ecological floating bed comprises four floating bed units, and the emergent aquatic plants and the submerged plants on the four floating bed units are reed and horehound, arundo donax and hydrilla verticillata, thalictrum repens and watermifoil, typha and goldfish.