JPH03206205A - River beautifying method - Google Patents

Abstract

PURPOSE:To improve a fine sight of a river by providing a muddy water path for draining muddy water having high concentration of filth separately along a stream path through which clear water flows so that the muddy water flow path is isolated from the outside world. CONSTITUTION:A river 1 is partitioned into the upper and lower parts by an intermediate bottom so that a muddy water path 2 draining muddy water including high concentration of filth and a clear water flow path 3 through which clear water having high transparency compared with the muddy water are isolated from each other. Blower pumps 7 are provided in zigzags as aerators at positions near both banks of the clear water flow path 3. Thus, since the muddy water flow path 2 is isolated not to be seen from outside, the transparency of the river 1 is improved so that the fine sight of the river can be largely improved.

Description

[Detailed description of the invention] [Application fields of Industry E] The present invention relates to ways to improve the aesthetic appearance of rivers in urban areas.

[Prior Art] As filth and other impurities flow into rivers flowing through urban areas, the quality of the water has deteriorated to the point where fish cannot live there, and many rivers are unnaturally unsightly. As such filth continues to flow in, it is actually impossible to remove it through dredging, and the current situation is that it is simply allowed to flow into the sea in small amounts.

[Invention or problem to be solved] Recently, environmental issues have become a hot topic, and there is a strong desire to beautify rivers that flow through cities, but as mentioned above, removing sludge is difficult and expensive. Therefore, few effective measures have been taken.

In view of the above circumstances, it is an object of the present invention to provide a method for improving the aesthetic appearance of rivers into which filth such as sludge flows.

[Means for Solving the Problems] In order to solve the above three problems, the present invention provides the following method.

That is, the river beautification method according to the present invention is a method for improving the aesthetic appearance of rivers into which filth such as sludge flows, and in which a turbid water channel for distributing turbid water with a high concentration of filth is replaced by a channel for distributing clearer water. are installed separately along the flow path,
The turbid water channel is characterized by isolating it from the outside world.

[Function] A flow path for turbid water and a flow path for relatively clean water are arranged separately and in parallel, and the turbid water flow path is isolated from the outside world, thereby improving the aesthetic appearance of the river.

[Example] The embodiments shown in the drawings will be described below.

FIG. 1 shows one embodiment of the present invention, in which a river 1 has a turbid water channel 2 through which turbid water with a high concentration of filth such as sludge flows.
and a clear water channel 3 through which 7q water, which is more transparent than the turbid water, flows are provided separately and isolated from each other. That is, the river 1 is divided into upper and lower parts by the intermediate bottom 5,
Muddy water flows on the bottom side, and clear water flows on the second side. It is preferable that the upper and lower channels are completely partitioned, but if there is no risk that a large amount of dirt will flow in from the lower side, it may be possible for the running water to flow between the upper and lower channels to some extent.
In some cases, it may be something like a thin mesh. A purifying substance 4 useful for purifying water is placed on the intermediate bottom 5L forming the bottom of the clear water channel 3. If the upper surface of the intermediate bottom 5 and the purifying substance 4 are made white or light blue, the transparency of the flowing water will be improved.
This is preferable because the visual effect of "L" can be obtained. As the purifying material 4, one or more of cobblestone, clay, activated carbon, theolite, honeycomb, etc., may be used. It is convenient to form these into a mat or block shape so that they can be easily replaced. If an adsorbent is employed as the purifying substance, it is also possible to remove 71'j turbid substances dissolved in the water. Note that this type of purifying substance does not necessarily have to be provided.

At positions close to both banks of the clear water channel 3, blower pumps 7 supported by dish-shaped pedestals 8 are installed in a staggered manner as an aeration device. This blower pump 7 is equipped with a gas suction pipe 9 at the discharge port of a submersible pump, and the jet water flow discharged from the pump forms a negative pressure section and sucks gas.
The bottle contains microscopic air bubbles that eject water. Note that the aeration device is not limited to the proa-bomb as described in E, but any other suitable device that can mix oxygen or air into water may be used. In addition, in the illustrated example, the aeration device 7 or the f. 1”
? They may be arranged in rows for convenient maintenance and oxygen intake, or in rows in the middle of the river.

Figure 4 shows the oxygen piping diagram for the aeration system, where the oxygen source lO and the air intake port 11 are connected to the solenoid valve 1.
It is connected to the aeration device 7 via 2 and 13. Also,
There is a dissolved oxygen indicator controller (DOI[l:) 1 4 in the water.
A sensor section 15 is provided, and oxygen or air is sent to the aeration device based on the detection result. For example, if the dissolved oxygen concentration is 3 ppm or more, the valve 12 is left idle and the hull 13 is opened to discharge air into the water. When the dissolved oxygen concentration is higher than a predetermined value, the suction of oxygen and air may be stopped, and furthermore, the operation of the pump itself may be stopped.

FIG. 5 shows an example in which the river is not divided into upper and lower parts, but partitioned into left and right parts by a partition wall 7, with the left half of the figure being the clear water channel 3 and the right T or the turbid water channel 2. The upper part of the turbid water channel 2 is covered by a ceiling plate 8. The upper surface of this top plate 8 can be used as a walking path, flower bed, etc. It is effective to provide the same aeration device 7 and purifying substance 4 in the 7o water flow path 3.

6 and 7 show examples in which a clay pipe 10 is provided as the turbid water channel 2. In the example in FIG. 6, the clay pipe 10 is placed at the bottom of the river 1, and in the example in FIG. It is buried below the bottom of the As shown in FIG. 6, if a clay pipe 10 serving as a turbid water channel 2 is placed in a river, construction is simple and economical. Further, as shown in FIG. 7, if the earthen pipe 10 is buried below the riverbed, there is an advantage that the dead volume of the river 1 is not reduced and there is no resistance to flowing water. As mentioned above, it is preferable to arrange an aeration device and a purifying substance in the clear water channel.

In any of the above cases, some power such as bombs may be required, but the existing river basin is divided into a clear water channel and a turbid water channel, and turbid water flows exclusively into the turbid water channel. It is economical because it only needs to be drained, so there is no need for major construction work such as installing a separate waterway, and there is no cost for acquiring land.

[Effects of the Invention] As is clear from the above explanation, according to the method for beautifying a river according to the present invention, a turbid water channel through which water containing sludge and other filth flows and a clear water channel through which clean water flows are separated. and
The turbid water channels are isolated and cannot be seen from the outside, which increases the transparency of the river and greatly improves its aesthetic appearance. If an aeration device or a purifying substance as described in the example is added to this fresh water channel, the BOD of the flowing water can be reduced. COD is reduced and the environment can be made habitable for fish.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing an embodiment of the present invention, Fig. 2 is an explanatory view of the main parts, Fig. 3 is a plan view thereof, Fig. 4 is a piping diagram of the aeration device, and Figs. The figure is a sectional view showing a different embodiment.

Claims (1)

[Claims] (1) A method for improving the aesthetic appearance of rivers into which filth such as sludge flows, by separating the turbid water channel that carries turbid water with a high concentration of filth along the channel that carries clearer water. 1. A river beautification method characterized by separating said turbid water flow path from the outside world.