JPH06178626A - Method for simultaneous aquatic greening and cleaning of water quality - Google Patents

Abstract

PURPOSE:To clean the water quality while improving the scene by mooring a raft on the water, vegetating terrestrial plants, locating the upper parts of the roots in a space between the base of the raft and the water surface and immersing the lower parts of the roots in water. CONSTITUTION:A space between the base of a raft and the water surface is formed with float members 4 and 5 and terrestrial plants 8 are vegetated in gaps between the respective bars 3. The upper parts of the roots of the terrestrial plants are located in a space 11 between the level 9 of the base of the respective bars and the water surface 10. Thereby, the lower parts of the roots are immersed in water and the cultivation on the water is carried out in this state of immersing the lower parts of the roots.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a closed water area such as a lake,
The present invention relates to technology for purifying water quality while improving the landscape by cultivating terrestrial plants on the shores of rivers and dam sites in cities and rural areas.

[0002]

2. Description of the Related Art Conventionally, it has been attempted to purify water quality by utilizing the fact that plants have a high ability to absorb eutrophic salts such as nitrogen and phosphorus in water. For example, water purification tests using water hyacinths, which are planktonic plants, have been widely conducted, and research using reeds such as reeds and reeds has also been advanced.
All of these are aquatic plants. Since non-recovered aquatic plants may cause re-pollution of water quality, a floatation device has been devised in which the perimeter of planted aquatic plants is surrounded by an outflow prevention net.

[0003]

[Problems to be Solved by the Invention] Harvesting of aquatic plants is generally a problem. For example, water hyacinths that naturally grow in suspension are difficult to harvest, and non-recovered substances cause re-pollution of water quality. In addition, reeds and reeds are difficult to mow, and residual plants and roots are not recovered, which causes recontamination. Even if the above-mentioned flotation device is used to prevent pollution, it cannot be completely prevented, and the cutting work becomes complicated.

There is also a problem that a way to effectively use these harvested plants cannot be opened, and this becomes a new waste, which requires a great deal of cost for its treatment. In addition, aquatic plants are monotonous in terms of landscape, and there is also the problem that diverse landscapes cannot be formed year-round or seasonally.

An object of the present invention is to develop a technique which can contribute to greening above water while solving such conventional problems.

[0006]

According to the present invention, the squid to which a floating member is attached so as to form a space between the bottom of the squid and the water surface is moored on the water, and the gap between the bars forming the squid is formed. To provide a method for water purification and water purification, which comprises vegetation of a terrestrial plant by utilizing the above, exposing the upper part of the terrestrial plant to the above space, and cultivating the terrestrial plant on the water while immersing the lower part of the root in water. .

[0007]

[Action] Since terrestrial plants have a strong ability to absorb nutrients, they serve to purify water. However, stationary cultivation on water is often difficult because of the oxygen demand on the roots. According to the present invention, since the root base and the root upper part of the plant sandwiched in the gaps of each bar of squid are exposed in the space between the bottom of squid and the water surface,
Replenishment of oxygen from the air, which is necessary for terrestrial plants, is performed at the root base and the root upper part of the exposed portion, and at the same time, water and nutrients are replenished from the lower root dipped in water. At that time, if the root base or upper root in the air is covered with a water-absorbing net and hung below the surface of the water, water absorption to the root base and the upper root is promoted.

In this way, the present invention makes it possible to grow terrestrial plants while utilizing nutrient salts such as nitrogen and phosphorus in water. Therefore, the variety of various terrestrial plants can be environmentally beautified. It is possible to effectively purify water while using it for harvesting and replanting, and it is sufficient to raise the squid to the land when performing work, and the workability and adaptability to the season are good.

[0009] In addition, in harvesting, by raising the whole growing plant, the problem of re-pollution of water quality is solved, and stationary cultivation is possible without being affected by the shoreside topography, water depth, water flow, etc. Also, it has an excellent effect that the amount of cultivation can be freely controlled by connecting a required number of squids according to the landscape and water quality.

[0010]

EXAMPLE FIG. 1 shows a state in which a large number of squid 2 according to the present invention are connected and floated on the shore of an embankment 1 in the water flow direction, and various terrestrial plants are cultivated underwater on these squid 2. .

FIG. 2 shows an example of a squid according to the present invention. The bar 3 made of a number of lightweight materials is assembled in a plane in the same direction to form the icada body 2, and the longitudinal floating members 4 are attached to both sides thereof. Further, a lateral floating member 5 protruding outwardly from these floating members 4 at a right angle is attached. 6 is a plant support rod that is erected on the upper surface of the squid bar. Reference numeral 7 denotes a mooring lantern.

In the illustrated example, the floating members 4 and 5 are made of foamed resin, and the bar 3 is made of wood. When the squid is floated on the water surface, the entire load, shape and dimensions are designed so that the bottom surface of the squid main body 2 including the bar 3 is located above the water surface even when the plant grows.

In addition to the example shown in the figure, an air bag made of a resin sheet (as used in a lifeboat) may be used as the floating member, and a lightweight resin (styrofoam or the like) or a lightweight aggregate may be used as the bar 3. It is also possible to use synthetic materials such as. In any case, a material having a specific gravity of less than 1 is used as the material for squid.

FIG. 3 shows the terrestrial plant 8 using the squid of FIG.
FIG. 4 is a cross-sectional view showing a state in which is cultivated, and FIG. 4 is a partially enlarged view thereof. As shown in the figure, with the cultivated plants 8 loaded, the bottom level 9 and the water surface 10 of each bar 3 of Ikada
A space 11 (which has an appropriate size depending on the type of plant, but usually has a height of about 5 to 10 cm) is formed between and. The terrestrial plants 8 are vegetated using the gaps between the bars 3,
The root portion and the root upper portion 12 are exposed to the space 11, and the root lower portion 13 is in contact with the water surface. By exposing the root portion and the root upper portion 12 to the space 11, oxygen is supplied from the air to the root portion 12, so that even land plants can be cultivated on the water.

As shown in FIG. 4, terrestrial vegetation 8 is supported by stoppers 14 on terrestrial support rods 6 which are vertically installed by fitting the lower ends into bars 3, and water-absorbing reticulate reaching root surface 12 to the water surface. A body 15 is attached. The water-absorbent reticulate body 15 assists in replenishing water to the root portion and the root upper portion 12, and also helps the aerobic or anaerobic microorganisms to settle by being entangled with the root. If these microorganisms settle in, the water purification capacity will be further enhanced.

The surface of the floating members 4 and 5 in contact with water (for example, the bottom surface) is formed in a mesh shape, a projection shape, or a porous state to increase the surface area, or is formed on a surface having a microorganism adhering ability such as vinyl acetate paint. By doing so, the water purification by microorganisms can be further supported.

In this way, according to the present invention, the terrestrial plant is float-cultivated on the water surface, but at the time of harvesting, the plant is uprooted and recovered from the gap between the bars of the squid. This recovery work can also be performed by lifting the squid on land and dismantling each bar. The collected plants can be used as greening plants and can also be used for biomass conversion.

Although only the terrestrial plants have been described in the above-mentioned examples, the cultivation of not only the terrestrial plants but also the aquatic plants can be performed together.

[0019]

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to effectively purify water quality by selecting a terrestrial plant having a higher ability to absorb nutrients than an aquatic plant and utilizing the property thereof. In addition, the plants can be collected completely and with good workability, and the collected plants can be reused in a green state without fear of re-contaminating the water quality at the time of harvesting.

In addition, a variety of landscapes can be obtained by connecting squid with vegetation of different species, and an environment suitable for a waterside landscape can be formed. Furthermore, since any plant can be used as a target plant of the present invention in principle, it is possible to cultivate it throughout the year by selecting various plants according to the season and the season, and the landscape and water quality. It has an excellent effect that highly useful plants can be collected while achieving purification together.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which various terrestrial plants are cultivated on the shore according to the present invention.

FIG. 2 is a perspective view showing an example of a squid according to the present invention.

FIG. 3 is a cross-sectional view showing a state in which land plants are planted in the squid according to the present invention.

FIG. 4 is a partially enlarged view of FIG.

[Explanation of symbols]

 1 Levee 2 Squid 3 Squid bar 4,5 Floating member 6 Plant support rod 7 Rootless plant 11 Land between squid bottom and water surface 12 Root and root of terrestrial plant 15 Water absorbing net

Claims (5)

[Claims] 1. A mooring moth on which water is attached so that a space is formed between the bottom of the moth and the water surface,
It consists of vegetating a terrestrial plant by utilizing the gaps between the bars constituting the squid, exposing the upper roots of the terrestrial plants to the space, and immersing the terrestrial plants in water while immersing the lower roots in water. Water greening and water purification method. 2. The water revegetation and water purification method according to claim 1, wherein a water-absorbing reticulate body that reaches the water is attached to the root trunk of the terrestrial plant. 3. The method for water revegetation and water purification according to claim 1 or 2, wherein a terrestrial plant support member is attached to the upper surface of the squid. 4. The water revegetation and water purification method according to claim 1, 2 or 3, wherein a plurality of squid are connected along the shore. 5. A squid moored with a floating member so as to form a space between the bottom of the squid and the water surface is moored on the water,
Terrestrial plants and aquatic plants are planted using the gaps between the bars forming the squid, and the upper roots of the terrestrial plants are exposed to the space and the lower roots are immersed in water to bring the terrestrial plants and aquatic plants onto the water. Water greening and water purification method consisting of stationary cultivation.