JP4650606B2 - Water supply method and water supply system - Google Patents

Description

The present invention arbitrarily collects inexpensive irrigation water that can be used for many purposes, for example, a method that can preferentially transport within a self-utilizing state mainly under a specific jurisdiction, and can cope with various demand conveniences of expanded customers And the system .

Originally, in any raw water system, it is common for water supply facilities to transfer raw water from the source of raw water to the point of demand utilization using expensive underground underground pipes after processing the raw water according to the intended use. It was a normal state that it was operated even if it took a great deal of expenses.
However, with the change in business forms due to the changing times, under the system that emphasizes multipurpose use of water by pursuing purpose and utilization efficiency, there was a significant increase due to the discovery of new value beyond existing forms. Business reforms are being made.

For example, preparations to meet the demand for industrial water have not been made in industrial areas and urban areas other than industrial parks. This is especially true for commercial areas in Tokyo or Osaka, which are large cities.
However, in recent years, in densely populated areas in cities, changes in the form of demand have been seen along with advanced treatment of drinking water, such as water for cooling and heating and water for cleaning and purification. In recent years, the building management method has been revised, and even in the cooling tower supply water, the water quality at the drinking water level is required.
On the other hand, with regard to miscellaneous water that occupies most of the water other than drinking water, the actual situation is that drinking water is actually used as drinking water, which is irrational in terms of economy, energy and resources. It is still overlooked even though there are many.

In response to these disadvantages, middle-water technology has been developed for the purpose of collecting and reusing used water, and based on the progress of membrane separation technology that supports this, the development of secondary wastewater from larger sewage treatment plants Attempts have been made by the Tokyo Metropolitan Government and others to use advanced treatment, supply to the surrounding area, and reuse as miscellaneous water.
In addition, there are cases where the use efficiency is improved by adopting a cascade system in response to continuous use that gradually changes from a field requiring high water quality to a use field of lower water quality.
However, even though these methods are useful, they cannot be profitable in small-scale deployments such as initial cost problems and running costs during processing, and they can be handled exclusively in the emergency evacuation aspect of the experimental stage or legal regulations. It's just a means.

In order to avoid these disadvantages in such a current situation, the present inventors have reviewed the unique form of distributing water to the demand area after previously determining the use and performing treatment corresponding to the use in advance. . In other words, the present invention has devised a new water supply method and system for transferring multipurpose water as raw water mainly through independent use areas within the jurisdiction and making it valuable at demand bases without pre-determining purposes. did.

Furthermore, as water supply for emergencies, water that can be used suitably in fields that do not necessarily meet the water quality standards for drinking water, such as fire prevention water that can be substituted for rivers and lakes, water spray, and agricultural water. The possibility of providing a supply base was also included.
In some cases, rainwater and the like can be expected to be useful as an auxiliary water source for miscellaneous water.
As a conventional example, for example, Patent Document 1 discloses a common use tank for drinking water and fire prevention water, for example. Examples are introduced in Patent Document 2 and others.
However, no system has been proposed for supplying raw water that can be continuously used without being drought.

Furthermore, as a water source that can be obtained only in the event of an emergency, a mobile structure that secures domestic water in a compact manner using ordinary water purification technology by utilizing rivers, lakes, fire prevention water, and other sources that are relatively close to tap water sources. An example of the water device is reported in Patent Document 3.
In any case, it is assumed that the raw water itself is unspecified, and it is determined whether or not it can be targeted as drinking water only under a special condition such as a disaster.
Furthermore, there is a situation in which a new and steady supply of irrigation water is required, such as an area where no water supply is provided, such as a newly established industrial park, or a newly-developed urban area, but cannot be easily dealt with depending on the environment.

To this end, it was first determined that a water source as a supply source could be secured nearby, and that it would be possible to establish a system for making it valuable through appropriate processing depending on the application.
According to the method of the present application, for example, it has been confirmed that it can be achieved by tie-up with an organization having a degree of freedom related to piping space and water transfer if existing facilities are used, although it is not related to water facilities.
That is, water is collected from at least one water source that is suitable and easily procured as multipurpose raw water, and these waters are singly or mixed with other irrigation water, and treated with valuable water at various demand points. A method and system for feeding pipes.
JP 7-132299 A JP-A-9-30594 JP-A-9-66295

The present inventors have conducted intensive research in order to achieve the above-mentioned object from such a viewpoint, and can always maintain a system that can secure a large amount of inexpensive high-quality raw water and can supply it to the required customers without delay. It is.
For this purpose, it is indispensable to devise a water distribution route so as to supply main water under a system in which a main supply water source base is provided and in some cases the stored water is used together.
As a result, the present inventors have found out that it is possible to supply a water quality suitable for the purpose of use if consistent and precise water quality management is performed based on the quality of the water for stable distribution.

That is, the gist of the present invention is that, when supplying and transferring water, a loop-type water distribution main connected to a water supply conduit is used as a wide-area operator such as a railway entity, an expressway entity, or a community thereof. Water supply method and system characterized by laying along the line of the annular line under the jurisdiction of the above, and making the water of the loop distribution main pipe into a valuable resource by mixing it with other water or supplying it to each demand base It is in.
The following cases can be considered as an example of laying along a line of a ring line managed by a wide-area business operator such as a railway business entity or an expressway business organization or a community of these organizations.
For example, considering the problem of supplying industrial tap water with ground pipes, it is relatively inexpensive and simple if water pipes are safely installed along railway lines, highways, etc. while taking various measures. Can be executed.
Furthermore, it can be said that these routes are preferable from the viewpoint that the foundation is solid and has many flat portions and is generally in an environment isolated from the surroundings.

When the water is made valuable at the destination, the water is appropriately treated according to the purpose of use, including the case where the water is used as it is in the state of raw water.
For example, raw water supplied from the irrigation route can be processed as needed even if it is unsuitable for drinking water, and it can be processed into drinking water by applying advanced treatment. It can be supplied by mixing with the drinking water to be supplied, or can be supplied to a wide range of irrigation water as industrial water after determining the quality.

In the present invention, railway entities laying water pipes, highways entities global operators such or as a reason to limit the wayside annular line of jurisdiction of these communities, even on first favorable favorable environmental conditions construction It is advantageous in that it can be executed close to the ground surface.
Examples include railway track sites and highway roadsides that support such construction under easy conditions, such as a solid foundation, blessed with flat parts, and a space and environment protected from the surroundings.
For example, a ring state can be laid along the existing railway loop line, and the following advantages are provided by the advantage of securing a continuous zone.

1. The main pipe of the water distribution can be arranged in a closed pipe line so that the water pressure inside the pipe can be kept constant at all times.
2. When a large number of branches from a main pipe arranged in a loop (loop shape) , water can be taken at a constant water pressure from any position. Even if the water pressure fluctuates, a booster pump can be installed to prevent the water pressure from dropping.
3. In the annular piping state, measures against water leakage are easy, and water can be supplied while avoiding water leakage points.
4). If a line pump is installed in an annular conduit, it is possible to change the water supply pressure to more water supply points than a small number of conduits.
5. If it is a water distribution pipe piped close to the ground surface, a cladding pipe including a water distribution pipe and a water leak detector installed adjacent to each other can be provided to easily monitor the water leak at all times.
6). A shut-off valve linked to the water leak detector in the water pipe can be arranged at regular intervals so that the front and back of the water leak point can be shut off at the time of water leak.
7). If a non-circular water distribution pipe is used, an elevated water storage tank will be installed near the junction of the water conduit and at the end of the pipe, etc., to cope with water breakage when water leakage is interrupted.
8). In addition to supplying water directly to the water supply target from the distribution pipe at the supply base, it is possible to supply and distribute water to the water transport vehicle.

In the present invention, water is collected and transported from at least one water source that can be easily procured as multipurpose raw water, subjected to valuable water treatment at various demand points as needed, and the water can be used alone or in other ways . It is a system that supplies piping by mixing with irrigation water, and can respond to demand in areas where industrial water is not prepared, such as urban areas other than industrial areas.
In such a meaning, the industrial effect of the present invention is extremely remarkable.

A typical configuration example of the water supply system of the present invention described above is shown in FIG.
Fig. 1 shows an experimental industrial water supply main pipe close to an industrial estate where no industrial water supply is laid, as a water supply conduit, and a loop-shaped distribution main pipe installed in the industrial estate. A representative case of introducing water and setting up and demonstrating the system of the present invention is shown.

An industrial park with 450 offices and about 250,000 tons of freshwater per day as a reduced model of a system for supplying industrial water in Tokyo, where industrial water is not supplied in the form of industrial tap water. , A special loop-shaped water distribution main pipe (6) having a nominal diameter of 100 made of rigid vinyl chloride pipe is manufactured, one of which is connected to the main on-off valve (9), (18) and the water supply pump (8). Connected to an industrial water main (10).

The loop-shaped water distribution main pipe (6) was provided with a urethane cushion material spread on the ground. Further, five branch pipes for taking out in the horizontal direction are provided for each loop 50 m, and a processing machine defined for each experimental purpose example is connected to each branch pipe.
That is, the branch pipe (1) and the branch pipe (4) are facilities for untreated miscellaneous water, and the branch pipe (2) and the branch pipe (5) are drinking water facilities (11) having a microfiltration membrane (MF) filtration facility (11). The branch pipe (3) was connected to a pipe to the elevated water tank (12) via a pumping pump (14).
Furthermore, a water pressure sensor (15) in the pipe between the branch pipe (1) and the branch pipe (2), between the branch pipe (3) and the branch pipe (4), and between the branch pipe (5) and the water supply main pipe connection portion. A booster pump (16) interlocked with was installed as a line pump.
In addition, an open / close valve (17) was provided between the branch pipe and the water distribution main pipe to make it open.

The internal pressure of the loop distribution main pipe (6) is set to 0.3 MPa, then each branch pipe is opened, the branch pipe (1) and the branch pipe (4) are 40 tons / hour, and the branch pipe (2) is Water was distributed at 30 tons / hour, the branch pipe (5) at 60 tons / hour, and the branch pipe (3) at 5 tons / hour.
A drinking water facility having a branch pipe (2) and an MF filtration membrane facility (a method of pre-treating with a sand filter and filtering with a hollow fiber membrane filter “STELLAPORE” UMF2024 made by Mitsubishi Rayon KK) connected to the branch pipe (5) After the treatment in (11), the water quality of the obtained water was analyzed.

On the other hand, the water quality (all raw water) of the branch pipe (1), branch pipe (3), and branch pipe (4) was analyzed, and the results are as shown in Table 1 below.
As is clear from the results in Table 1, the treated water obtained by connecting to the branch pipe (2) and the branch pipe (5) was much clearer than the quality standard of tap water.
Further, the water distribution was continued for 24 hours. During that time, the pressure in the loop water distribution main pipe did not decrease, and a stable water flow state was maintained and the object of the present invention was achieved.

As described above, the present invention collects water based on at least one water source that can be easily procured as multipurpose raw water, and this is the jurisdiction area of a specific entity that can utilize the self-use area , that is, railway. Properly laying water pipes exclusively along the loop line under the jurisdiction of wide-area operators, such as business entities and highway business entities, or their communities , and making the water available at necessary destinations It is the water supply method and system characterized by the point which can do.
Further, it is extremely useful as a method for easily supplying water to areas where industrial water is not prepared, such as urban areas other than industrial areas, and is effective for future new water supply.
Thus, the industrial effect of the present invention is extremely remarkable.

In the Example of this invention, it is the figure which represented typically the whole typical structural example of a water supply system as an example.

DESCRIPTION OF SYMBOLS 1 Branch pipe 2 Branch pipe 3 Branch pipe 4 Branch pipe 5 Branch pipe 6 Loop-shaped distribution pipe 8 Water supply pump 9 Opening and shutting valve 10 Industrial water supply main pipe 11 Drinking applicable water facility 12 Elevated water tank 13 Miscellaneous water facility 14 Pumping pump 15 Water pressure sensor 16 Booster pump 17 Open / close valve 18 Open / close valve

Claims (2)

When supplying and transferring irrigation water, laying loop distribution mains connected to the water supply conduits along the loop lines that are under the jurisdiction of wide-area operators such as railway companies and highway companies, or their communities And the water supply method characterized by making the water of the said loop-shaped water distribution mains into a valuable by mixing with other water independently or supplying to each demand base. When supplying and transferring irrigation water, laying loop distribution mains connected to the water supply conduits along the loop lines that are under the jurisdiction of wide-area operators such as railway companies and highway companies, or their communities And the water supply system characterized by making the water of the said loop distribution water main into a valuable by mixing with other water alone or supplying to each demand base.