JPH0866114A - Method for removing green algae of lake or marsh - Google Patents

Abstract

PURPOSE: To efficiently remove green algae breeding in water of a lake or a marsh. CONSTITUTION: The method for removing green algae of a lake or a marsh is to throw a net bag 4 into water 2 of the lake or marsh 1, collect the green algae 3 together with the water 2 of the lake or marsh 1 into the net bag 4 with a pump 5, discharge the water 2 to the outside of the net bag 4 and return the water into the lake or marsh 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for removing green algae that have propagated in lake water.

[0002]

2. Description of the Related Art Conventionally, in order to remove green algae that have propagated in lake water, a flocculant such as aluminum sulphate is put into lake water, and the green algae are allowed to agglomerate and then aerated if desired. There have been adopted a method of floating an object on the surface of water and then sucking it with a vacuum pipe to collect it, or a method of adding copper sulfate to the water of a lake to kill green algae.

[0003]

However, in the method of aggregating green algae and collecting them with a vacuum pipe, it is necessary to install a vacuum device or the like on the shore of the lake, which cannot be performed without such room. In addition, a large amount of coagulant is required, which is uneconomical. Furthermore, there are problems such as environmental pollution of the lake and its surroundings due to the coagulant, and since the water of the lake and marshes is also sucked in a considerable amount from the vacuum pipe, the removal efficiency of green algae is poor and the water of the lakes and marshes will decrease There is also a problem.

[0004]

Means for Solving the Problems As a means for solving the above-mentioned conventional problems, the present invention introduces a mesh bag (4) into water (2) of a lake (1), and The water (2) of the lake (1) is pumped into the inside of the lake by a pump (5), and the green algae (3) floating in the water (2) are separated into the net bag (4). 3)
The present invention provides a method of removing the above.

[0005]

[Function] The water (2) is fed into the water bag (4) in the lake (1) by the pump (5). Then, the green algae (3) floating in the water (2) are separated in the net bag (4), the water (2) is discharged to the outside of the net bag (4), and the lake (1) again. Returned inside. When the green algae (3) are filled in the net bag (4), the green algae (3) is taken out from the net bag (4) and regenerated.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention is shown in FIGS. In the figure (1)
Is a lake, and water (2) in the lake (1) contains green algae (3)
Are breeding. The water (2) of the lake (1) is filled with a streamer-like net bag (4), and a floating plate with a pump (5) installed.
(6) can be floated. And as shown in FIG.
An injection pipe (7) fed from the outlet side of the pump (5) is connected to the opening at one end of (4), and the opening is connected to the wire (8).
Etc. Further, the opening at the other end of the mesh bag (4) is closed by a clip (9). The water absorption pipe (10) is inserted from the inlet side of the pump (5) and inserted into the water (2) of the lake (1), and the water absorption pipe (10) has water absorption pipe at the tip thereof. Net basket (11) to prevent inhalation from (10)
Is attached, and a cloth bag (12) filled with a coagulant such as aluminum sulfate is placed in the net basket (11).

In the above structure, when the pump (5) is operated, water (2) and green algae (3) are sucked from the water absorption pipe (10) and injected into the net bag (4) through the injection pipe (7). .
At this time, the coagulant filled in the cloth bag (12) in the net basket (11) is eluted into the surrounding water (2) and sucked from the water absorption pipe (10), and The green algae (3) are aggregated in the net bag (4) by the aggregating agent and separated from water. However, in the present invention, when water (2) is injected into the net bag (4), a shearing force is generated and the green algae (3) in the water (2) aggregates due to the shearing force. It is not mandatory. In this way, the green algae (3) are collected in the net bag (4), and only water is discharged to the outside of the net bag (4) and returned to the lake (1) again.

When the mesh bag (4) is filled with green algae (3) or the mesh bag (4) is clogged, the operation of the pump (5) is stopped and the other end of the mesh bag (4) is stopped. Remove the clip (9) at the opening and connect the suction pipe (15) that is pulled out from the suction box (14) to which the suction pump (13) is connected to the opening as shown in FIG. Operate the pump (13) to activate the mesh bag (4)
Suck the green algae (3) in the suction box (14) into the mesh bag
Play (4). If there is no room to install a suction box (14) on the shore of the lake (1), raise the net bag (4) to the shore and open it to extrude and remove the green algae (3) in the net bag (4). May be.
Conversely, if there is room, the pump (5) may be installed on the shore, or the pump (5) may be installed in the water of the lake (1).

[0009]

Therefore, in the present invention, it is not necessary to install a device or the like on the shore of a lake, and it is possible to remove green algae efficiently and inexpensively in a lake in any terrain, and there is no concern about environmental pollution. , The water in the lake is circulated and will not decrease.

[Brief description of drawings]

 1 to 3 show an embodiment of the present invention.

[Figure 1] Illustration of green algae collection

FIG. 2 is a side view of the mesh bag with a part thereof omitted.

FIG. 3 is an explanatory diagram of a state of reusing the net bag

[Explanation of symbols]

 1 Lake 2 Water 3 Green algae 4 Net bag 5 Pump 7 Injection pipe

Claims (1)

[Claims] 1. A green alga in a lake, wherein a net bag is put into the water of the lake and the water of the lake is pumped into the bag to separate the green algae floating in the water into the bag. How to remove