JP2002188184A - Water treatment method for civil engineering work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for treating water for civil engineering works and obtaining extracted water from raw water such as river water without necessitating disposal of a raw water contaminant. SOLUTION: Raw water is pumped up by a submerged pump 1 arranged in a water supply source of a river, and its contaminant is separated to extract treatment water for civil engineering works. A solid-liquid separator 2 separating a solid from a liquid is provided on a discharge side of the submerged pump 1, and a drain port 3 for draining solids separated by the solid-liquid separator 2 is opened in the raw water to extract the treatment water.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for treating water for civil engineering work in which extracted water is obtained from raw water pumped by a submersible pump, and more particularly to a method for obtaining extracted water from raw water without requiring separation and disposal of contaminants. The present invention relates to a method for treating civil engineering water.

[0002]

2. Description of the Related Art In a case where river water is used to supply water required for civil engineering work, as shown in FIG.
The raw water is received in the receiving tank 102, and the contaminants 10 in the raw water are
3 requires a water treatment apparatus configured by interposing a filtration device 104 and the like. The extracted water after the treatment is sent to a jet water supply pipe 106 for press-fitting a pile by a water pump 105.

[0003]

However, since the separated contaminants are generally miscellaneous inflows such as sand, algae, branches and leaves, straw chips and vinyl chips, the contaminants collected in the water tank are generally not included. Separation products obtained by filtration and filtration are regularly taken out, drained and solidified, and then subjected to disposal according to the contents. Further, since the water receiving tank requires a sufficient capacity according to the discharge amount of the water supply pump in order to settle and separate contaminants while suppressing convection agitation, the working space is spread over the work area due to its arrangement space. There have been problems such as the problem of compatibility with the fixed arrangement.

An object of the present invention is to provide a method of treating civil engineering water for obtaining extracted water from raw water of a water supply source such as a river without having to dispose of raw water contaminants.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the gist of the present invention is to extract water for civil engineering work without accumulating contaminants in raw water. The specific solution is as follows.

The method for treating civil engineering water comprises the steps of pumping raw water with a submersible pump placed in river water, separating the contaminants, and extracting treated civil engineering water.
The feature is that a solid-liquid separator that separates solid and liquid is interposed on the discharge side of the submersible pump, and from the raw water pumped by the submersible pump, the contaminants are separated by the solid-liquid separator to form raw water. Discharge and extraction of treated water from which contaminants have been separated. Thereby, the extraction water is supplied while the contaminants in the raw water are maintained in the raw water without being accumulated. Therefore, according to the present invention, only the raw water can be extracted without the need to dry and solidify the separated contaminants, so that the treated water for the civil works without the contaminants is supplied while minimizing the change in environmental conditions. be able to. Also,
Since a large receiving tank for sedimentation separation is not required, the entire apparatus is made compact.

[0007] Further, by providing a connecting means such as a joint which is separably connected between the submersible pump and the solid-liquid separator, it can be disassembled and easily transported, so that a mobile processing apparatus according to the situation can be provided. Can be arranged.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a connection configuration diagram showing a water treatment device for civil engineering work used in the present invention. This processing device includes a submersible pump 1 to be placed in river water,
It comprises a solid-liquid separator 2 provided on the discharge side comprising a discharge system including a pumping pipe 4 of the submersible pump 1 and a water receiving tank 5 which receives the pumping pipe 4 of the submersible pump 1 on land. The water tank 5 is connected to a jet injection device or the like via a water supply pump 6 and a supply pipe 7.

The solid-liquid separator 2 is connected to the raw water received from the submersible pump 1 so as to separate solid components from the raw water, and to connect the extracted water to the water receiving tank 5 so as to discharge the separated solid components. 3 is installed so as to open into raw water.

In the water treatment apparatus for civil engineering work having the above-described structure, the submersible pump 1 takes in raw water from the suction part 1a by arranging the submersible pump 1 and the solid-liquid separator 2 in the river water, and supplies the raw water through the pumping pipe 4. To the receiving tank 5. At this time,
The solid-liquid separator 2 separates the contaminants in the raw water received from the submersible pump 1 and returns the contaminants to the original raw water from the drain port 3. That is, the water receiving tank 5 receives only the extracted water from which the contaminants are separated, while the contaminants in the raw water are returned to the raw water as they are without being accumulated after being separated by the solid-liquid separator 2. Further, it is preferable that the suction portion 1a is provided as close to the water surface as possible so as to make the solid hard to suck.

Therefore, the above-mentioned water treatment apparatus for civil engineering work can extract only the raw water without the need to dry and solidify the separated contaminants. The extracted water can be extracted and supplied. In addition, the above-mentioned processing apparatus does not require a conventional large sedimentation tank, and requires only a minimum water receiving tank. Further, as shown in FIG. 6 can be installed inside,
The whole apparatus is made compact, and the degree of freedom in arranging the work area is improved by saving space. Further, the solid-liquid separator 2
And the submersible pump 1 are connected via a connecting means 1b composed of a joint or the like that detachably communicates with the submersible pump 1, so that the transportation becomes easy by disassembly, so that the apparatus can be flexibly arranged according to the progress of the construction process. Becomes

FIG. 3 is a main part connection configuration diagram showing an example in which a water treatment device for civil engineering work is installed on the water surface, in which an underwater pump 1 and a solid-liquid separator 2 are installed on the water surface by a float 11. The submersible pump 1 has a condition that its suction part 1a is arranged in raw water, and the solid-liquid separator 2 has a condition that a drain port 3 is opened in raw water. The pumping pipe 4 is connected to the float 11 to constitute the float 11. With this configuration, even in the case where the water depth of the installation location is large, similarly to the above, it is possible to obtain extracted water for civil engineering work from raw water such as river water without the need to dispose of raw water contaminants. .

As described above, it is clear that the arrangement of the above-mentioned solid-liquid separator is not limited as long as it is provided with a drain port opened in raw water while being interposed on the discharge side.
Further, depending on the degree of freedom of the configuration, as shown in FIG. 4, a unit configuration may be adopted as the separator integrated pump 21 in which the solid-liquid separator is integrated with the submersible pump. Therefore, the treatment apparatus is compact without requiring a large receiving tank for sedimentation separation and a space for separation waste, and has the effect of being able to flexibly respond to site conditions due to its flexibility in installation. Things.

[0014]

The method for treating civil engineering water of the present invention has the following effects. Since the extraction water is supplied while the contaminants in the raw water are maintained in the raw water without being accumulated, only the raw water can be extracted without drying and solidifying the separated contaminants. It is possible to supply treated water for civil engineering work without contaminants while minimizing the change. In addition, since a minimum water receiving tank is sufficient without the need for a conventional large sedimentation tank, it is also possible to install a water pump inside the same water receiving tank. In addition to improving the degree of freedom in arranging the areas, if the solid-liquid separator and the submersible pump are configured to be detachable, the transportation and movement become easy, so that the mobile processing apparatus can be arranged according to the situation. .

[Brief description of the drawings]

FIG. 1 is a connection configuration diagram showing a water treatment device for civil engineering work of the present invention.

FIG. 2 is a connection configuration diagram showing an example in which a water pump is installed in the water treatment device for civil engineering work of the present invention.

FIG. 3 is a functional configuration diagram of a main part showing an example in which the water treatment device for civil engineering work of the present invention is installed on the water surface.

FIG. 4 is a main part functional configuration diagram showing an example of an integral configuration of the main part of the water treatment device for civil engineering work of the present invention.

FIG. 5 is a connection configuration diagram of a conventional water treatment device for civil engineering work.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Submersible pump 1a Suction part 1b Joint (connection means) 2 Solid-liquid separator 4 Pumping pipe (discharge system) 5 Water receiving tank 5a Water receiving part 11 Float 21 Separator integrated pump

Claims (2)

[Claims] 1. A method for extracting raw water by using a submersible pump disposed at a water supply source such as a river, separating contaminants and extracting treated water for civil engineering work, wherein a solid and a liquid are provided on a discharge side of the submersible pump. A solid-liquid separator is installed to separate the contaminants from the raw water pumped by the submersible pump, and the contaminants are separated by the solid-liquid separator and discharged into the raw water, and the treated water from which the contaminants are separated is extracted. A method for treating civil engineering water. 2. The method for treating water for civil engineering work according to claim 1, further comprising connecting means such as a joint which is separably connected between said submersible pump and said solid-liquid separator.