JP2686603B2 - Muddy water separation reactor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mud separation reactor for separating water from mud mixed with cement, earth and sand and water, and more specifically to mixing mud with a polymer flocculant to remove water from mud. TECHNICAL FIELD The present invention relates to a muddy water separation reaction device that separates and obtains mud having a water content reduced to some extent.

[0002]

2. Description of the Related Art At construction sites such as tunnel construction, road construction and dam construction, mud and mud mixed with cement, soil, sand and water are usually discharged. It causes the destruction of the natural environment such as pollution. Therefore, conventionally, water is separated from muddy water, which is generally mixed with cement, soil, sand, and water, and this water is filtered before flowing into a river, and the lump of mud can be transported by a transportation vehicle such as a dump truck or excavator. After it becomes hard, it is transported to a disposal site such as a dumping site or a landfill. However, since it is necessary to lower the water content to some extent so that these mud can be transported, water and mud are generally separated by the method shown in FIG.

This makes a reservoir 100 for storing muddy water near a construction site, etc., and divides this reservoir 100 into a portion for storing the muddy water and a portion for separately storing the water separated from the muddy water. Partitioning is performed with a mesh-like separating net 101, and a coagulant is added to the muddy water accumulated in the muddy water collecting portion to precipitate sediment, and the water is allowed to flow from the separating net 101 to one reservoir side. Then, this water is taken in by the pump 102, filtered to flow into the river, and the mud that has settled into a desired mass to some extent is scooped up from the reservoir 100 to be used as a transportation vehicle such as a dump truck or a shovel car. It is loaded and transported to the treatment area.

However, since the apparatus shown in FIG. 5 requires a large installation space, there are many problems in that there is no installation space and environmental problems occur, especially in a densely packed residential area or near a house. In addition, it is necessary to make such a reservoir every time the construction site changes, and to refill the reservoir when the construction is completed, which requires a great deal of cost and time.

In view of such a current situation, at present, a device as shown in FIGS. 6 and 7 has been developed. This is Figure 6
As shown in, the location where the muddy water and the flocculant are supplied is on the top,
Arrange the reaction tank 104 inclined so that the discharge side is downward,
In this reaction tank 104, as shown in FIG.
The baffle plates 112 are attached in a staggered manner at right angles to the flow-down direction, and the mud water and the coagulant are made to meander in the flow path formed thereby to mix the flow-down flow.

[0006]

In such an apparatus, although the installation space is relatively small, the mixture of mud and coagulant flowing down in the reaction tank is formed by the baffle plate and the side wall of the reaction tank. A part of the mixture gradually stays at the corner, so that the whole mixture is not discharged and remains in the reaction tank, and it is necessary for the worker to scrape it out periodically. In addition, since the mixture that flows down stays, the flow path in the reaction tank in which the mixture flows gradually becomes narrower, which causes various problems such as a longer processing time.

A first object of the present invention is to solve the above problems, reduce the space for treating muddy water, and obtain a uniform mixture of muddy water and a flocculant to reliably separate mud and water. The second purpose is to reliably discharge the mud and water separated in the reaction tank.

[0008]

SUMMARY OF THE INVENTION A first object of the present invention is to:
In separating water from muddy water in which cement, soil, sand and water are mixed, a supply pipe for supplying muddy water via a flow meter 16 to the upper part of a tubular reaction tank 4 having an adjustable inclination angle and a rectangular cross section. A plurality of turbulent flow generating rods 11 are arranged in a staggered manner in the slanting direction in the slanting upper part of the reaction tank 4 so as to stand upright in the downflow direction. A plurality of baffle plates 12 having a predetermined distance from the bottom surface of the reaction vessel 4 are arranged in parallel, and a coagulant is added to the upper inclined portion of the reaction tank 4 according to the supply amount of the muddy water supplied from the supply pipe 15. This is achieved by connecting the charging pipe 17 for charging.

Further, the first purpose of the present invention is to form a step-like shelf 18 at the bottom of the reaction tank 4 in the above-mentioned structure in front of the baffle plate 12, and to allow the mixture of muddy water and a coagulant to flow down at this shelf 18. This is achieved by adopting a configuration that reduces speed.

A second object of the present invention is that, in the above construction, the sludge lower end of the reaction tank 4 is provided with a mud discharge port 14 for separately discharging mud reacted with a coagulant and water floating on the mud. In addition, the reaction tank inclination adjusting jack 2 which can be achieved by adopting the two-stage configuration in which the drainage port 13 is formed, and in which the inclination angle of the reaction tank 4 is freely adjustable in the above configuration. This is achieved by adopting a coordinated configuration.

[0011]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described with reference to FIGS. In FIG. 1, reference numeral 10 denotes a tubular body having a rectangular cross section which constitutes a reaction tank 4 having an inclination that allows muddy water to flow down naturally. A supply pipe 15 for pumping muddy water by a pump (not shown) is connected to the bottom of the upper portion of the reaction tank 4, and a flow meter 16 is interposed in the supply pipe 15. The flow rate signal from the flow meter 16 is given to a coagulant supply unit (not shown) that supplies the coagulant supplied from the charging pipe 17 whose tip reaches the reaction tank 4, and supplies the coagulant. Is controlled according to the flow rate of muddy water.

The tilt angle of the reaction tank 4 can be adjusted by a reaction tank tilt adjusting jack 2 fixed on the lower machine base 1, and the speed of the muddy water is changed by adjusting the tilt angle. . As shown in FIG. 2, a plurality of turbulent flow generating rods 11 are staggered in the upper part of the reaction tank 4 in the downward direction A, and muddy water and a predetermined amount of polymer flocculant (see FIG. When (not shown) is added, these are allowed to flow down and mixed. Further, below the position where the turbulent flow generation rod 11 is planted, a space having a predetermined interval is provided above and below in order to limit the flow of muddy water by a predetermined amount, and both ends of the baffle plate 12 are provided on both side walls of the cylindrical body 10. It is fixed. A plurality of the baffle plates 12 are arranged at a predetermined interval in the downflow direction A of the reaction tank 4 and orthogonal to the downflow direction A. In addition, a step-like ledge 18 is provided on the bottom surface of the cylindrical body 10 immediately before the baffle plate 12, and the flow velocity of the mixture of the muddy water and the coagulant is reduced at this position, so that the water is slightly removed from the muddy water. It is designed to be separated one by one.

At the lower inclined end of the reaction tank 4, as shown in FIG. 3, a drain port 13 for draining the water floating on the mud to the outside and a drain port 14 for flowing the mud downward are provided in two stages. A filter 19 for preventing a certain amount of earth and sand from entering the drain port 13 is attached to the inlet of the drain port 13 so as to cover the inlet. Furthermore, the sludge outlet 1
The mud from 4 is installed in the lower part of the reaction tank 4, and is a conveyer conveyor unit 2 for separating the water and the mud contained in the machine stand 1.
It is guided by the guide pipe 5 connected to the sludge discharge port 14 so that it is loaded on the 0 transport belt 21. The machine base 1 has a frame structure and guides the circulating movement of the conveyor chain 22 which constitutes the transfer conveyor unit 20. The conveyor chain 22 has a structure in which it is cyclically moved by the drive motor 3 shown in FIG.

The transport belt 2 of this transport conveyor unit 20
Reference numeral 1 denotes a mesh-shaped strip, and both side edges of the conveyor strip 21 are integrally fixed to the conveyor chain 22. In addition, the transport belts 21 inside the both sides of the transport belt 21
A guide plate 23 is arranged just above the guide belt 23 in the traveling direction of the transport belt 21, and a large number of small holes 24 for draining mud water are formed in the guide plate 23. The guide plate 23 is usually formed of a punching metal plate and extends to the discharge end of the transport conveyor unit 20.

On the other hand, as shown in FIG. 1, the transfer belt 21 is located slightly forward of the middle of the transfer conveyor unit 20.
The mud surface forming unit 25, which is formed by a taper roller (not shown) having a thin center and thick ends, forms a mountain shape having a high center in the surface of the mud conveyed by. It is arranged so as to be rotatable and height-adjustable across the transport belt 21, so that floating water on the surface of the mud is discharged to both sides of the transport belt 21.

Further, the front of the transfer conveyor unit 20 is inclined upwardly, and the inclination can be adjusted by a discharge end inclination adjusting jack (not shown). The front end of the transport conveyor unit 20 is a discharge end for discharging the mud separated from water and having a water content lowered to some extent, and thus the mud from which water has been removed is discharged.
On the other hand, the water separated from the mud carries the conveyor unit 20.
The water is collected in a saucer (not shown) arranged below the water tank and reused as water for cement kneading or water for washing, or is filtered and discharged to a river.

Therefore, when the muddy water and the polymer flocculant are supplied to the reaction tank 4 in an amount corresponding to the amount of the muddy water supplied, these flow through the turbulent flow generating rods 11 in the reaction tank 4 while being mixed. . During this flow, reaction with the flocculant begins and water is gradually separated from the mud. Since a plurality of shelves 18 and baffles 12 are arranged at intervals in the middle of the flow of this mixture, water and mud can be effectively separated. After this, the water separated to some extent in the reaction tank 4 is drained from the drainage port 13 of the reaction tank 4 and flowed to the lower pan. On the other hand, the mud is placed on the conveyor belt 21 that is circulating and moving downward from the mud discharge port 14.

The mud placed in this way is subsequently supplied forward on the conveyor belt unit 20, and the water separated during the movement of the conveyor belt 21 is the guide plate 23 and the mesh conveyor belt 21. Will be subsequently drained. On the other hand, since the surface of the mud is shaped like a chevron while being conveyed by the mud surface forming unit 25, the water on the surface of the mud is drained from both sides of the conveying belt 21 and collected in the lower tray. As a result, the water and the mud can be reliably separated, the water in the saucer can be effectively used for other purposes, and the mud can be easily transported.

[0019]

EXAMPLE In the practice of the present invention, the muddy water separated in the reaction tank 4 floats on the mud, and usually a filter 19 is provided immediately before the entrance of the drain port 13 for draining this muddy water so that the muddy water does not mix. It is provided. The filter 19 can be arranged as follows as shown in FIG.
That is, a plate-shaped filter 19 having a predetermined length is attached to the upper side of the reaction tank 4 at the boundary between the sludge discharge port 14 and the drainage port 13 of the reaction tank 4, and the tip thereof is directed slightly upward. The reaction tank 4 is partitioned vertically. As a result, mud flows at the bottom of the reaction tank 4, floating water flows over it,
This floating water flows through the filter 19 to the drain port 13.
The filter 19 is not limited to this, and may be a strainer as long as it does not mix mud of a certain size into the drain port 13.

[0020]

EFFECTS OF THE INVENTION As is clear from the above-mentioned embodiments, the present invention is to add a polymer flocculant according to the supply flow rate of muddy water, and mix it while flowing down between turbulent flow generating rods. Since it is a mud separation reactor that separates mud and water before it reaches the lower slope of the reaction tank, there is no need to create a large reservoir near the construction site as in the past, and there is a large installation space for this. It becomes unnecessary.

Further, even in a dense residential area, near a house or the like, since the muddy water separation treatment can be efficiently carried out only by carrying in and installing the apparatus, there is no fear of environmental problems, and a great deal of cost and time are not required. Become. Moreover, the mud water and coagulant flowing down the reaction tank are surely and uniformly mixed in the flow down by the turbulent flow generation rod and the baffle plate and react continuously, so the mud is divided into the lower part and the water is divided into the upper part. Drainage becomes easier. Also,
Since mud does not accumulate in the corner between the baffle plate and the reaction tank, the maintenance of the device is facilitated, and the life and life of the device are shortened.

[Brief description of the drawings]

FIG. 1 is an overall front view showing the present invention.

FIG. 2 is an enlarged sectional plan view of an essential part of a reaction tank.

FIG. 3 is an enlarged front view of a main part of FIG.

FIG. 4 is an enlarged front view of a main part showing another embodiment of the present invention.

FIG. 5 is an explanatory diagram showing a conventional example of the present invention.

FIG. 6 is an explanatory diagram showing another conventional example of the present invention.

7 is a plan view of a main part of FIG.

[Explanation of symbols]

 1 machine stand 2 jack for adjusting the inclination of the reaction tank 3 drive motor 4 reaction tank 5 guide tube 10 cylindrical body 11 turbulent flow generation rod 12 baffle plate 13 drainage port 14 drainage port 15 supply pipe 16 flow meter 17 input pipe 18 shelf 19 Filter 20 Conveyor conveyor unit 21 Conveyor belt 22 Conveyor chain 23 Guide plate 24 Small hole 25 Mud surface forming unit A Downward direction

Claims (4)

(57) [Claims] 1. In the separation of water from muddy water in which cement, soil, sand and water are mixed, a flow meter 16 is provided above a cylindrical reaction tank 4 having an adjustable inclination angle and a rectangular cross section. A supply pipe 15 for supplying muddy water is connected, and a plurality of turbulent flow generation rods 11 are arranged in a staggered manner in the inclination direction at the upper part of the inclination of the reaction tank 4 so as to stand upright in the flow-down direction A. A plurality of baffle plates 12 having a predetermined distance from the bottom surface of the reaction tank 4 are arranged in parallel below the slant of the reaction tank 4, and the muddy water supplied from the supply pipe 15 is supplied to the slanted upper portion of the reaction tank 4. A muddy water separation reaction device, characterized in that a charging pipe 17 for charging a flocculant according to the amount is connected. 2. The reaction tank is characterized in that it has a step-like ledge 18 on the bottom face in front of the baffle plate 12, and the ledge 18 reduces the flow-down speed of the mixture of muddy water and a flocculant. The muddy water separation reaction device according to claim 1. 3. The slanted lower end of the reaction tank is provided with a drainage port 14 for discharging separately the mud reacted with the coagulant and the water floating on the mud, and a drainage port 13 thereon. The muddy water separation reaction device according to claim 1 or 2, characterized in that. 4. The sludge separation reaction device according to claim 1, wherein the inclination angle of the reaction tank is adjusted by a reaction tank inclination adjusting jack 2 whose height is adjustable. .