JP2769986B2 - Lake ecological control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ecological control device for preserving a water quality environment in lakes and marshes.

[0002]

2. Description of the Related Art In recent years, in lakes and marshes such as dam lakes, eutrophication is caused by excess nutrients flowing in, and phytoplankton such as cyanobacteria and flagellates are proliferated abnormally, producing blue-green algae, freshwater red tide, mold odor and the like. There's a problem. In order to solve such problems by controlling the ecosystem in lakes and marshes, various attempts have been made as follows. (1) Zooplankton such as large antlers and rotifers, Laboratory experiments have confirmed that phytoplankton such as cyanobacteria and flagellates are eaten. Therefore, zooplankton is used. (2) Marine artificial reefs inhabit seaweeds and small animals, and serve as fish feeding grounds. Use artificial reefs because they can function as shelters and spawning beds, or (3) similar to floating islands, where zooplankton easily accumulates in the roots that appear in the water Therefore, it is an object of the present invention to provide a lake ecological control device that attempts to use a floating island.

[0003]

SUMMARY OF THE INVENTION However, these lake ecological control devices, which are intended to utilize (1), provide an environment or device in which zooplankton can stably inhabit in lakes and marshes. However, the device that attempts to use (2) cannot be used in lakes such as dam lakes because of long-term fluctuations in water level over different seasons, and in lakes that are undergoing eutrophication, the transparency of lake water is high. Is small, and the slope of the lake bottom is often large, so the functions exhibited in the ocean cannot be exhibited.
The device that attempts to use (3) has various problems such that plants vegetated on floating islands do not always produce roots in water, and fish tear off the roots appearing in water.

Accordingly, an object of the present invention is to solve the above-mentioned problems of the proposed lake ecology control apparatus, and to enable zooplankton to stably inhabit lakes and marshes.
It is an object of the present invention to provide a lake ecological control device capable of supplying zooplankton to the entire lake, without being torn off by fish, and without having to remove accumulated sludge.

[0005]

According to the present invention, in order to achieve the above object, a support member is hung on a float in a lake or marsh, and a horizontal support pipe and a support pipe are provided on the support member. Attach an artificial reef composed of a plurality of plate members incorporated with a predetermined gap in the horizontal direction, suspend the artificial reef at a shallow constant water depth, stretch a support rope between the support members, and It is characterized in that a number of string-shaped artificial roots are attached to a rope and attached to the base end thereof.

[0006]

In such a lake ecological control device, the artificial reef placed underwater and the artificial root placed below it are:
Due to the proper sunshine, attached algae are constantly attached, zooplankton that habitat artificial reefs and artificial roots proliferate, and large fish cannot enter the gaps between the artificial reef plate members In this way, zooplankton is not predated and exhausted, and in this way zooplankton that spreads throughout the lake prey on cyanobacteria and flagellates that are trying to proliferate abnormally in the lake, blue-green algae and freshwater red tide,
Prevents mold odor and the like from occurring. And the dead attached algae become sludge and peel off naturally and fall into the water,
Since the artificial roots are drooping, they spontaneously exfoliate and fall into the water.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In one embodiment of the present invention shown in FIGS. 1 to 4, reference numeral 1 denotes a plurality of floats, and a support member 2 is suspended from the float 1 at a constant shallow depth of water. Reef 9 is installed. The artificial reef 9 is shown in FIG.
As shown in FIGS. 3 and 4, a plate member 12 made of vinyl chloride is incorporated into a cross-shaped support pipe 10 via a support 11 in a slit shape, and sponges 13 are installed in some places. . A support rope 3 made of polyethylene rope is stretched between the support members 2, and a base end of an artificial root 4 made of polyethylene rope is attached to the support rope 3. Such a thing is arrange | positioned in the lake 5 and the float 1 floats on the water surface. The artificial root 4 has a structure of branching, and in the case of floating, a weight (not shown) is attached to a lower end thereof.

[0008] The artificial reef 9 placed in the water as described above can be appropriately illuminated by the sun, so that the attached algae 6 always adhere to the artificial reef 9 and the zooplankton 7 inhabiting the artificial reef 9 proliferates. Since large fish cannot penetrate into the gap between the members 12, the zooplankton 7 is not completely eaten by predation, and thus the zooplankton 7 spread over the entire lake 5 is abnormally proliferating in the lake 5. Prey on the blue-green algae and flagellates that you are trying to prevent, and prevent the occurrence of blue-green algae, freshwater red tide, mold odor, etc. And dead algae 6
Turns into sludge and falls off naturally from the artificial reef 9 underwater. In addition, the sponge 13 becomes a rhizosphere, and the aquatic plant 14 can be inhabited. It should be noted that the support 11 and the plate member 12 may be of a different shape or other than vinyl chloride as long as they have the same effect. Moreover, the artificial reef 9 reduces the influence of waves on the zooplankton 7 that lives near the artificial root 4 located thereunder.

[0009]

As described above, in the present invention, a support member is hung on a float in a lake water area, and a horizontal support pipe is provided on the support member and a predetermined gap is horizontally provided between the support pipe. An artificial reef composed of a plurality of plate members incorporated is attached to the artificial reef, the artificial reef is suspended at a constant shallow depth, and a support rope is stretched between the support members. The roots are hung with their bases attached, so that zooplankton can stably inhabit the lakes and the artificial reefs are located at a constant depth, so the seasonal water level of the lakes This has the effect of not being affected by fluctuations. Further, the artificial reef has an effect that the influence of the wave on the zooplankton living near the artificial root which is vulnerable to rapid water currents such as waves located thereunder can be reduced.

[Brief description of the drawings]

FIG. 1 is a front view of an embodiment of the present invention.

FIG. 2 is a front view of the artificial reef same as above.

FIG. 3 is a plan view of the same.

FIG. 4 is a right side view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Float 2 Support member 3 Support line 4 Artificial root 5 Lake 6 Mars 6 Adhered algae 7 Zooplankton 8 Board member 9 Artificial reef 10 Support pipe 12 Board member 15 Space

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-57-48390 (JP, A) JP-A-7-60286 (JP, A) JP-A-7-16596 (JP, A) JP-A 60-60 71096 (JP, A) JP-A-63-209795 (JP, A) JP-A-62-153854 (JP, U) JP-A-2-105346 (JP, U) (58) Fields investigated (Int. ⁶ , DB name) C02F 3/32 A01G 33/00

Claims (1)

(57) [Claims] In a lake water area, a support member is suspended from a float, and the support member is composed of a horizontally oriented support pipe and a plurality of plate members incorporated in the support pipe with a predetermined gap in a horizontal direction. Attach an artificial reef, suspend the artificial reef at a constant shallow depth, place a support rope between the support members, attach a number of string-shaped artificial roots to the support rope, attach the base end thereof, and hang it. A lake ecological control device characterized by: