JP4761495B2 - Suspension recovery device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a suspension recovery apparatus for recovering a suspension floating near a water bottom such as a river or a lake or near the sea bottom.
[0002]
[Prior art]
Dioxins and other harmful substances and pollutants are not only from sludge that has settled on the bottom of the river or lake, but also in the suspension near the bottom of the sea or the bottom of the sea (from the sediment layer on the bottom of the sea or the bottom of the sea). In many cases, it is included in a large amount in the upper layer, which statistically forms a layer having a thickness of about 50 cm in many cases.
[0003]
In order to remove the above-mentioned dioxins and other harmful substances and pollutants and prevent their adverse effects, not only dredging sludge that has settled on the bottom of the water or the bottom of the sea, but also floating suspensions near the bottom of the sea or near the bottom of the sea. It is necessary to collect and process the turbid liquid.
[0004]
In order to collect such a suspension, as shown in FIG. 8, the suction port 60a of the suction pipe 60 is positioned at the level of the suspension layer 3, and the suspension 3L is sucked from the suction port 60a. It has been proposed.
[0005]
However, if the suspension is sucked by the technique as shown in FIG. 8, if the suspension 3L in the vicinity of the suction port 60a of the suction pipe 60 is sucked, a large amount of the surrounding water or seawater is sucked. . As a result, more water and seawater are sucked into the suction pipe 60 than the suspension 3L, which is inefficient and reduces the efficiency of processing harmful substances such as dioxin in the suspension. To do.
[0006]
Further, the suspension is diffused, and as a result, harmful substances may be diffused in water, and the original purpose cannot be achieved.
[0007]
[Problems to be solved by the invention]
The present invention has been proposed in view of the above-described conventional technology, and can be effectively recovered without diffusing a suspension near a water bottom such as a river or a lake, or near the sea bottom. And it aims at providing the suspension collection | recovery apparatus which hardly absorbs surrounding water and seawater.
[0008]
[Means for Solving the Problems]
According to the present invention, the suction unit (7) in which the suction hole (72a) is formed and communicated with the suction pipe (6) is positioned in the layer (3) of the suspension closest to the water bottom (2). The suspension (32) existing in the suspension layer (3) is sucked from the suction hole (72a) of the suction unit (7), and flows through the suction pipe through the suction unit (7). In the suspension recovery apparatus, the suction pipe (6) communicates with a negative pressure source, and the suction unit (7) communicated with the suction pipe (6) has a plurality of suction holes (72a) on the side surface. The frame (72) is formed, and a support (74) that communicates the frame (72) and the suction pipe (6).
[0009]
As used herein, “suspension” is used to broadly encompass fluid substances that are not precipitated and not solid, suspended soil, colloidal or gel substances. ing.
[0010]
According to the present invention having the above-described configuration, the suction unit (7) is suspended after being placed on the bottom of the water (the bottom of a lake, the bottom of a river, the sea bottom, etc.) (2) the layer (3) of the nearest suspension. In order to inhale the turbid liquid (3 L), water that does not contain harmful substances is not inhaled, but only the suspension (or suspended soil) (3 L) is inhaled. At that time, the suspension is not diffused.
The sucked suspension (3L) flows through the suction pipe (6) through the inside of the suction unit (7), and is temporarily stored, for example, in the storage means (5a) of the dredger (5). , Transported to hazardous substance treatment facility.
As a result, harmful substances contained in large quantities in the suspension (3 L) are safely processed without being diffused.
[0011]
Further, suction is performed through a large number of holes (72a) in the horizontal direction, that is, suction is performed over a wide area, and the efficiency of suction of the suspension (3L) is improved.
[0013]
In carrying out the present invention, the suction unit (70) may be configured to have a plurality of frames (72) and supports (74) in the vertical direction (FIG. 5).
[0014]
In the above case, suspension absorption openings (suction holes) are formed in all of the frame (circular frame, quadrilateral frame) (72, 73) and the support (bars crossed inside the cross) (74, 75). ) (72a) is formed and is preferably configured to absorb the suspension from the opening (72a).
[0015]
In carrying out the present invention, the suction unit (70) can be surrounded by a partition wall (9) (FIG. 5).
According to the pollutant recovery device configured in this way, after sucking the suspension (floating soil 3L) surrounded by the partition wall (box or lattice strainer) (9), the suction surrounded by the partition wall (9) It is only necessary to move the unit (70) and sequentially suck the floating soil in other areas.
[0016]
Or it is good also as a suction device (FIG. 6) which extended the frame (76) up and down, right and left, increased the support body (77), and assembled this support body (77) in the shape of a grid | lattice.
In the case of the above configuration, the number of absorption holes is increased, and the suspension is absorbed (sucked) from a large number of absorption holes, so that the suspension can be recovered over a wide range at a time, which is efficient.
[0017]
Moreover, you may comprise the apparatus described above in multiple steps in the up-down direction (FIG. 7). With such a configuration, the recovery work becomes more efficient.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings.
First, a first embodiment of the present invention will be described with reference to FIGS.
[0019]
In FIG. 1, a suspension (3 L) layer 3 containing a large amount of dioxins and other harmful substances and pollutants exists at the upper part of the bottom 2 of the water area 1.
[0020]
In order to drown the suspension (3 L) of the suspension layer 3, the suction unit 7 is settled to the suspension layer 3 by the lifting cable 8 from the dredger 5 anchored on the water surface 4.
[0021]
A suction pipe 6 connected to a negative pressure source (for example, a vacuum pump) (not shown) mounted on the dredger 5 is communicated with the suction unit 7.
[0022]
2 and 3, the suction unit 7 is a state in which a plurality of suction holes 72a are formed on the side surface and a frame 72 made of a ring and a straight pipe having a circular cross section, for example, in a cross shape. The support body 74 supports the frame body 72 and communicates the frame pair 72 with the suction pipe 6.
[0023]
The frame body may be a quadrangle, and the quadrangular frame body 73 and the support body 75 may be assembled in a square shape as shown in FIG.
[0024]
According to the pollutant recovery device of the first embodiment described with reference to FIGS. 1 to 4, since the suction unit 7 is positioned on the suspension layer 3 closest to the bottom 2, the suspension 3 L is sucked in, so that harmful substances are present. Water that does not contain water is not sucked, but can only suck suspension (or suspended soil) (3 L).
[0025]
Referring to FIG. 1 again, the sucked suspension 3L flows through the suction pipe 6 through the suction unit 7 and is temporarily stored in the storage means 5a of the dredger 5, etc. Not transported to hazardous substances treatment facility. As a result, harmful substances contained in a large amount in the suspension 3L are safely processed without being diffused.
[0026]
A second embodiment will be described with reference to FIG.
FIG. 5 shows a side view of the suction unit 70, in which the suction unit 7 of the first embodiment shown in FIGS. 1 to 4 is configured in a plurality of stages in the vertical direction (two stages in the figure).
[0027]
In FIG. 5, reference numeral 9 denotes a partition wall that is disposed so as to surround the entire suction unit 70 from the upper suction unit 70 </ b> U to the lower suction unit 70 </ b> L, and efficiently sucks the suspension (floating soil 3 </ b> L). It is intended to prevent the surroundings from being disturbed by suction.
[0028]
The pollutant recovery apparatus according to the second embodiment described with reference to FIG. 5 is advantageous when recovering the suspension of the suspension layer 3 having a relatively large thickness.
[0029]
A third embodiment will be described with reference to FIG.
6 expands the frame body 73 shown in FIG. 4 horizontally and vertically (referred to as a frame body 76), increases the number of support bodies 77, assembles them in a lattice shape, and arranges them widely in the horizontal direction.
[0030]
According to the pollutant recovery device of the third embodiment shown in FIG. 6, since the suspension is sucked in from a large number of absorption holes widely arranged in the horizontal direction, the suspension can be recovered over a wide range at a time. Is.
[0031]
A fourth embodiment will be described with reference to FIG.
FIG. 7 shows the arrangement of FIG. 6 in several stages in the vertical direction.
[0032]
According to the contaminant recovery apparatus of the fourth embodiment shown in FIG. 7, the contaminant recovery capability is high both in the horizontal direction and in the vertical direction, and has the capability of recovering a large amount of contaminants at a time.
[0033]
It should be noted that the illustrated embodiment is merely an example, and is not a description to limit the technical contents of the present invention.
[0034]
【The invention's effect】
The effects of the present invention are listed below.
(1) Since the suction unit is positioned after being placed in the suspension layer closest to the bottom of the water, only the suspension (or floating soil) can be sucked.
(2) Since the sucked suspension is temporarily stored in the storage means of the dredger through the suction pipe and then transported to the hazardous substance treatment facility, the harmful substance is not diffused and is safe. To be processed.
(3) If a plurality of suction units are configured in the vertical direction, the suspension can be efficiently recovered from the suspension layer having a large thickness.
(4) In the case where a unit is formed in which the frame body is expanded in the front-rear and left-right directions to increase the number of supports, the suspension can be collected over a wide range at a time.
(5) A larger amount of contaminants can be treated by expanding the frame body in the front / rear / left / right direction and further assembling a plurality of units with an increased number of supports vertically.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing a pollutant recovery work and apparatus in an embodiment of the present invention.
FIG. 2 is a plan view showing an example of a suction unit according to the first embodiment of the present invention.
FIG. 3 is a side view of FIG. 2;
FIG. 4 is a plan view showing another example of the suction unit according to the first embodiment of the present invention.
FIG. 5 is a side view showing a suction unit according to a second embodiment of the present invention.
FIG. 6 is a plan view showing a suction unit according to a third embodiment of the present invention.
FIG. 7 is a side view showing a suction unit according to a fourth embodiment of the present invention.
FIG. 8 is an explanatory diagram showing a main part of a contaminant collection work in the prior art.
[Brief description of symbols]
DESCRIPTION OF SYMBOLS 1 ... Water area 2 ... Water bottom 3 ... Suspension layer 4 ... Water surface 6 ... Suction pipe 7 ... Suction unit 8 ... Lifting cable 9 ... Septum 72, 73 ... Frames 74, 75 ... Support 72a ... Suction hole

Claims (1)

  The suction unit (7) in which the suction hole (72a) is formed and communicated with the suction pipe (6) is positioned in the suspension layer (3) immediately adjacent to the water bottom (2), and the suction unit (7 Suspension recovery in which the suspension (32) existing in the suspension layer (3) is sucked from the suction hole (72a) of the suction pipe, and is passed through the suction pipe through the inside of the suction unit (7). In the apparatus, the suction pipe (6) communicates with a negative pressure source, and the suction unit (7) communicated with the suction pipe (6) has a frame body in which a plurality of suction holes (72a) are formed on a side surface ( 72) and a support body (74) communicating the frame body (72) and the suction pipe (6).

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