JPH06220831A - Pollution preventing device - Google Patents

Abstract

PURPOSE:To effectively remove a suspended substance, a soluble organic matter, and nutrient salts in the polluted water. CONSTITUTION:A suspension frame 12 is suspended from a float 11 floated on the water surface. An inflow side net 13 and a processed water side net 14 are suspended at a fixed interval from both lower end sections of the suspension frame 12, a filter medium 15 having many space sections 18, 18... in the vertical direction is inserted between them, and a lower receiving frame 16 and a heavy weight 17 connected to it are provided at the lower end section of them.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pollution control device for purifying the quality of internal water in a reservoir, a waste disposal site, a water surface reclamation work and the like.

[0002]

2. Description of the Related Art Conventionally, in the case of water reclamation work, etc.
A pollution diffusion preventing film 1 as shown in FIG. 4A, or FIG. 4B.
The pollution diffusion prevention film 2 as shown in FIG. 4 or the pollution diffusion prevention film 3 as shown in FIG. 4C is used. The pollution diffusion preventing film 1 is constructed by attaching a float 1b to the upper end of a water blocking film 1a and a weight 1c at the lower end thereof, and extending the pollution diffusion preventing film 1 so as to surround the inflow side of the polluted water. There is.

The pollution diffusion preventing film 2 is a water-blocking film 2a.
Is constructed by attaching an overflow frame 2c integrated with the float 2b at the upper end and a weight 2d and a sandbag 2e at the lower end, which are stretched so as to surround the inflow side of the polluted water with the pollution diffusion preventing film 2. . The pollution diffusion prevention membrane 3 is constructed by attaching a float 3b to the upper end portion of the filtration membrane 3a and a weight 3c attached to the lower end portion thereof, and extends the pollution diffusion prevention membrane 3 so as to surround the polluted water inflow side. ing.

[0004]

In the pollution diffusion preventing film 1 shown in FIG. 4 (a), the water-blocking film 1a is vertically stretched in water, so that the polluted water is below the water-blocking film 1a. Therefore, it means that the polluted water is physically pushed downward to accelerate the sedimentation of the particles constituting the turbidity. Also, the water-blocking film 1a
Behind the, a gentle turbid flow region is formed, and here also a hydrodynamic field is formed which promotes particle settling.
Further, although this pollution diffusion prevention film 1 is useful for removing coarse particles suspended in the polluted water, it cannot remove fine particles, soluble organic substances and nutrient salts in the polluted water.

In the pollution diffusion preventing film 2 shown in FIG. 4 (b), a water blocking film 2a is stretched vertically from the water bottom to the vicinity of the water surface, and water passes only through the overflow frame 2c. In this case, it means that a sedimentation basin was formed on the inflow side of the pollution diffusion prevention membrane 2, and it can be considered that the treated water in the sedimentation basin has passed through the overflow frame 2c. Thus, the pollution diffusion preventing film 2 is useful for removing coarse particles suspended in the polluted water, but cannot remove fine particles, soluble organic substances and nutrient salts in the polluted water.

The pollution diffusion preventing membrane 3 shown in FIG. 4 (c) has a filtration membrane 3a stretched from the water surface to the bottom of the water, and when the polluted water passes through the filtration membrane 3a, coarse particles are suspended in the polluted water. However, it cannot remove fine particles, soluble organic matter and nutrients in polluted water. In addition, after algae or the like are generated in the filtration membrane 3a, it is possible to remove a small amount of fine particles, soluble organic substances and nutrients in the contaminated water, but the time for the contaminated water to pass through the filtration membrane 3a composed of one piece of fabric is Because it is short
The contact time between polluted water and produced algae is short, and the removal rate is low.

As described above, the above-mentioned conventional prevention film can only remove the suspended solids in the polluted water, or the suspended solids and some soluble organic substances and nutrient salts. Therefore, there is a technical problem to be solved in order to positively generate algae in the filter medium and effectively remove the suspended matter, soluble organic matter and nutrients in the polluted water, and the present invention is The object is to solve the problem.

[0008]

The present invention has been proposed in order to achieve the above-mentioned object, and a suspension frame is hung on a float that floats on the water surface, and both lower ends of the suspension frame are polluted. A water inflow side net and a treated water side net are suspended, a filter medium is fitted between the inflow side net and the treated water side net, and a lower receiving frame is suspended under the inflow side net and the treated water side net. The pollution prevention device, which is provided by connecting a weight to the lower end of the lower receiving frame, and the filter medium are formed by bundling fibers so that algae are easily generated, and the suspended substances attached to the inside of the filter medium. The present invention provides a pollution control device in which a large number of vertical space parts that settle down are provided adjacent to each other.

[0009]

In the filter material formed by bundling fibers, algae or the like are generated within 10 days of water passage time in the water surface landfilling work.
Therefore, when the polluted water passes through the filter material, the floating substances in the polluted water are attached and removed, and the soluble organic substances and nutrient salts in the polluted water are absorbed and removed by the biological action of algae or the like. Further, when the suspended matter group that has adhered to and grown on the filter medium one after another becomes large enough to close the voids of the filter medium, the suspended substance group is separated from the filter medium and a space portion vertically provided inside the filter medium is formed. Settle through.

Further, the polluted water flowing into the filter medium is removed from the inside of the filter medium in the area on the inflow side of the vertical space portion to remove most of suspended solids, organic substances and nutrients, and to remove the polluted water vertically from the inside of the filter medium. In the area on the treated water side after the space in the direction, mainly organic substances and nutrients are contacted and removed. As described above, suspended solids, organic substances, and nutrient salts are effectively removed from the polluted water that passes through the pollution control device of the present invention.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to FIGS. In the figure, 10 is a pollution control device. The pollution control device 10 includes a float 11 floating on the surface of the water, a suspension frame 12 suspended from the float 11, and a suspension frame 12
The inflow side net 13 and the treated water side net 14 suspended from both lower ends of the filter medium 15 and the filter medium 15 fitted between the inflow side net 13 and the treated water side net 14; A lower receiving frame 16 suspended from the lower portions of the side net 13 and the treated water side net 14, and a weight 1 continuous with the lower receiving frame 16.
7 and 7.

The float 11 is formed of styrofoam or other hollow body, etc., as long as it has a predetermined length and can float on the water surface. It should not be limited. or,
The suspension frame 12 surrounds the float 11 and expands the lower pieces 12a, 12a thereof. Further, the lower pieces 12a, 12a of the expanded suspension frame 12 and the lower receiving frame 16 are targeted.
The upper pieces 16a, 16a are expanded.

The lower piece 1 of the suspension frame 12 expanded in this way
The inflow side net 13 and the treated water side net 14 are installed so as to face each other between the 2a and 12a and the upper pieces 16a and 16a of the lower receiving frame 16, and the inflow side net 13 and the treated water side net 14 are connected to each other. The filter material 15 is fitted between the two. Moreover, the filter material 15 is formed by bundling fibers, and has a large number of space portions 1 in the vertical direction as shown in FIGS.
8 and 18 are provided.

Further, the suspension frame 12, the lower receiving frame 16, the inflow side net 13 and the treated water side net 14 are configured to support the filter medium 15 and maintain the predetermined shape of the filter medium 15. In addition, the inflow side net 13 and the treated water side net 14 may be made of fibers having a predetermined mesh, and the suspension frame 12 and the lower receiving frame 16 are impermeable sheets or impractical materials. Although it can be composed of woven fabric that can be regarded as water-permeable, the material,
The shape should not be specified.

Further, the weight 17 is continuously provided so that the polluted water X does not flow out from the lower end portion of the pollution control device 10 to the treated water Y side, and is composed of H steel or sandbags. Of course, its material and shape should not be specified. Thus, the pollution preventive device 10 is provided with connecting tools 19, 19 ... Protruding at both ends of the float 11 in order to surely separate the polluted water X side and the treated water Y side from each other. 10 and 10 are connected to each other, and upper and lower surfaces between the pollution control devices 10 and 10 are connected by end fabrics 20, 20. Further, the end fabrics 20, 20 ... Can be formed impermeable.

Reference numeral 21 in the figure indicates a binding portion. Since one embodiment of the present invention has the above-described structure, the polluted water X on the inflow side is blocked by the tensioning of the pollution control devices 10, 10 ... And cannot arbitrarily flow into the treated water Y side.
Therefore, the polluted water X on the inflow side is transferred to the inflow side nets 13, 13 ...
As the polluted water X passes through the filter medium 15, 15, ..., The suspended matter in the polluted water X is adhered to and removed from the filter medium 15, 15. Further, the filter material 15,
The soluble organic substances or nutrient salts in the polluted water X are absorbed and removed by the biological action of algae or the like generated in 15. When the suspended matter grows largely as flocs, the weight of the suspended matter causes the filter media 15, 15 ...
... will settle on the inner bottoms of the space portions 18, 18, ... Provided, and thus the treated water that has been reliably purified will flow into the treated water Y side.

The present invention can be modified in various ways without departing from the spirit of the present invention, and it goes without saying that the present invention extends to such modifications.

[0018]

As described in detail in the above one embodiment, the present invention removes suspended solids, soluble organic substances and nutrients in polluted water by allowing the polluted water to pass through the filter material in which algae are generated. It can be removed and clear water taken up. Therefore, by installing the pollution control device of the present invention in the inner water area of the waste landfill water surface reclamation work, the clear water can be discharged to the water system or the ocean to prevent the influence of water quality deterioration, etc. It is an invention that has a truly remarkable effect.

[Brief description of drawings]

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

FIG. 2 is a sectional view taken along line AA of FIG.

3 is a sectional view taken along line BB of FIG.

FIG. 4 is an explanatory diagram of a conventional example.

[Explanation of symbols]

 10 Pollution Prevention Device 11 Float 12 Suspended Frame 13 Inflow Side Net 14 Treated Water Side Net 15 Filter Material 16 Lower Receiving Frame 17 Weight 18 Space Part 19 Connecting Tool 20 End Woven Fabric

Claims (2)

[Claims] 1. A suspension frame is suspended from a float that floats on the water surface, and an inflow side net and a treated water side net are suspended from both lower ends of the suspension frame, respectively, and the inflow side net and the treated water are suspended. A filter medium is fitted between the side nets, a lower receiving frame is hung below the inflow side net and the treated water side net, and a weight is connected to the lower end of the lower receiving frame. A pollution control device. 2. The pollution control device according to claim 1, wherein the filter medium is formed by bundling fibers, and a plurality of vertical spaces are provided adjacent to each other inside the filter medium. apparatus.