JPH03151424A - Wide area water facilities - Google Patents

Abstract

PURPOSE:To effectively utilize water by providing water storage facilities having catchment mechanism for rain water and domestic sewage and water feed mechanism to environs in a plurality of districts, and connecting together respective water storage facilities with underground channels, canals, rivers, and the like. CONSTITUTION:In every district such as a street of office buildings 11, a park 12, a residential section 13, leisure facilities 14, and the like, water storage facilities 1 such as water storage tanks and storing reservoirs are provided for storing rain water or domestic sewage. Further the facilities 1 comprise positive catchment equipments for rain water. Further, respective water storage facilities 1 are connected together with underground channels 5, canals 6, rivers 7, and the like. In a wide territory unit, rain water or domestic sewage is effectively utilized. Hereby, urban type flood can be prevented and stable water supply can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to water conservancy equipment that effectively utilizes rainwater or domestic wastewater in large area units such as urban areas and suburban areas.

[Conventional technology] Conventionally, rainwater and domestic wastewater have been used in large buildings such as high-rise buildings and various halls, or in specific areas, by collecting rainwater through rain gutters or by using it inside the building. Drained domestic wastewater was reprocessed and used as gray water for toilets, synovial fluid in green areas, etc.

[Problem to be solved by the invention]

However, as mentioned above, conventional water facilities are independent facilities only for each building and its surroundings, and the water storage capacity is small, so in areas where water consumption is high, the water storage capacity of such water storage facilities is insufficient. Not only does rainwater fluctuate seasonally, and water tends to be in short supply in seasons with low rainfall, so rainwater cannot be used as the main water source for reprocessed water, and such a main water source does not have a stable supply. There is a problem in that domestic wastewater that is supplied is dirty and requires high reprocessing costs.

On the other hand, in recent years, the ground surface in urban areas has been covered with concrete, etc., and the amount of water absorbed into the ground has decreased, so when rainfall concentrates in one area, the rainwater is concentrated and flows into rivers, resulting in so-called urban areas. Floods occur frequently, but the rainwater storage capacity of each district's water storage facilities alone is small.
There was also the problem that the facilities were inadequate as a preventive facility for such urban floods.

Therefore, this invention was made by focusing on these problems, and the purpose of this invention is to stabilize the amount of rainwater that fluctuates regionally or seasonally, and to reduce the cost of water reprocessing. The purpose of this project is to provide wide-area irrigation facilities that can use rainwater as a main water source, and that can sufficiently store rainwater even when rainfall is concentrated in one area, thereby preventing urban flooding. The goal is to provide water facilities.

Means for Solving Problem C] This invention provides water storage facilities in each of a plurality of districts,
This water storage facility is connected to a rainwater collection mechanism and a water supply mechanism to surrounding water facilities, and the above-mentioned problems are solved by configuring a wide-area water facility that connects the multiple water storage facilities with water channels. ing.

Further, the water storage facility may be a wide-area water facility to which a drainage channel for domestic wastewater is connected.

(Operation) Rainwater that falls on the ground flows into water storage facilities installed in each district through water collection mechanisms such as road gutters, building gutters, and even permeable layers, where it is temporarily stored.

This rainwater is then sent by a water supply mechanism to water facilities that use water, such as buildings, halls, or parks, for use.

On the other hand, the water storage facilities in each district are connected to each other by waterways, and by sending and receiving water through these channels, it is possible to eliminate surpluses and deficiencies in the amount of water stored in each water storage facility.

In other words, even if there is a shortage of water storage in a certain area, water can be supplied from other water storage facilities that have sufficient storage capacity to ensure a stable regional water supply.
Because the total amount of water stored in water storage facilities in each district is large and can be stored as reserve water during seasons of heavy rainfall, it is possible to effectively cope with seasonal fluctuations in rainfall. be.

In addition, even if the water storage facility in a district becomes full due to rainfall concentrated in the - district, water will be sent to other water storage facilities via waterways,
To effectively prevent urban flooding by dispersing rainwater and storing a large amount of water.

In addition, if domestic wastewater is taken into the water storage facility in addition to rainwater, a certain amount of water will always flow into the water storage facility, making the amount of water stored more stable.

Note that the water storage facility referred to here includes specifically constructed water tanks as well as reservoirs such as ponds. Similarly, waterways refer not only to specifically constructed underground waterways, but also in a broader sense, including rivers and canals.

〔Example〕

First, the overall structure of the embodiment of this invention is shown in FIGS. 1 and 2.
This will be explained based on the diagram. Figure 1 is an overall configuration diagram of the wide-area water facilities, and Figures 2 (a) and (b) are explanatory diagrams showing the connection method of each water storage facility.

As shown in FIG. 1, water storage facilities are constructed in each predetermined area, and these facilities are connected to each other by respective waterways 4.

In addition to water storage tanks 2 built underground in each district, reservoirs 3 such as lakes and ponds are also used as water storage facilities. The water tank 2 is located in a built-up area 11 or a park 12 in the city center, or in a residential area 13 in the suburbs of the city, or in a leisure facility 4 such as an amusement park or a tennis court.
These are constructed underground, with various capacities ranging from 10,000 tons to 100,000 tons, depending on the amount of water used in the area. Furthermore, various structures can be considered for the water tank 2, and some are constructed integrally with a parking lot, an underground mall, or a station building platform.

In addition to the underground waterway 5, which is also constructed underground, the waterway 4 includes
Canal 6 and river 7 are used. The underground waterway 5 can be constructed relatively easily and inexpensively by burying a new iron pipe or the like underground, or by using a sewage ditch. In addition, the flow rate and flow direction of these waterways are constantly monitored by pumps and water gates in control facilities (not shown).
The amount of water stored in each district's water storage facilities is maintained at an appropriate level.

Therefore, depending on the wide-area water facility of this embodiment, even if the amount of water used in a certain area increases and the water in that water storage facility becomes insufficient, water can be extracted from the water storage facility in another area that has sufficient water storage capacity. This enables a stable regional water supply. In addition, multiple water storage facilities are constructed distributed in each district, and the total amount of water stored is large, so by storing water in seasons with high rainfall, it is possible to eliminate water shortages in seasons with low rainfall. be able to. Conversely, even if a large amount of rainfall is concentrated in a certain area and exceeds the capacity of the water storage facility in that area, this rainwater will be sent to the water storage facility in another area through the canal 4. , overflowing rainwater will not flow into rivers and cause flooding.

There are various possible ways to connect each water storage facility with the waterway 3, examples of which are shown in Figures 2 (a) and (b). In other words, as shown in Figure (a), a large-scale main water tank IA built in the center of the city may be the center, and multiple small-scale satellite water tanks IB built around it may be connected radially. Alternatively, as shown in FIG. 6(b), medium-sized water tank ICs constructed in each district may be connected in a mesh pattern. In addition, a combination of the above radial and mesh connection methods may be used.

Next, an example of the water usage cycle in each water storage facility will be explained based on FIG. 3.

As shown in the figure, the water tank 2 is constructed under the park 20 together with an underground roadway 21 and a public ditch 22. and,
The water tank 2 is partitioned into a raw water tank 2a, which temporarily stores inflowing rainwater and domestic wastewater, and a gray water tank 2b, which is communicated via a water treatment plant 23.

The raw water tank 2a is equipped with a road gutter 2 that serves as a water collection mechanism.
4 and the rainwater collection tank 26 of the building 25 are connected by a water distribution pipe 27, and a wastewater treatment plant 28 for domestic wastewater is also connected.
are similarly connected by a drainage channel 27. In addition, water is sent from the gray water tank 2b to a building 25, a park 20, etc., which are water facilities, via a water supply pipe 30 by a water pump 29, which is a water supply mechanism, and is supplied to a gray water tank 31 and a synovial fluid facility 32 in a green space, respectively. There is.

Thus, when it rains, rainwater flows into the raw water tank 2a of the water storage tank 2 via the gutter 24 and the rainwater collection tank 26, and the water treatment plant 23 purifies it and stores it in the gray water tank 2b. Then, the required amount of gray water is supplied to surrounding water facilities such as buildings 25 and parks 20 by the pump 29 and used.

Furthermore, domestic wastewater is collected at wastewater treatment facilities 28 of each building 25.
The water flows into the raw water tank 2a through the water tank 2a, thereby making water circulation more effective.

The water tank 2 is connected to a water tank 2 in another area via a waterway 4, and if the water storage capacity of the water tank 2 in this area is insufficient or exceeds the allowable water storage capacity, the waterway 4 Water is sent and received by the system, and an appropriate amount of water storage is maintained. Furthermore, once the water storage capacity is full, the water that is no longer needed will be taken to the sewer 33.
is discharged into rivers and the sea via

〔Effect of the invention〕

As explained above, depending on the wide area water utilization equipment of the present invention, by connecting water storage facilities installed in each district with water channels, it is possible to stabilize the amount of rainwater stored that varies regionally or seasonally. Rainwater, which has a low reprocessing cost, can be used as a main water source, and even if rainfall is concentrated in one area, so-called urban flooding can be effectively prevented.

Furthermore, when using domestic wastewater as reprocessed water in addition to rainwater, the supply of water to the water tank can be made more stable.

[Brief explanation of the drawing]

Figure 1 is an overall configuration diagram of wide-area irrigation facilities, and Figure 2 (a). (b) is an explanatory diagram of the connection method of each water storage facility, and FIG. 3 is an explanatory diagram showing an example of the water usage cycle around each water storage facility.

Claims (2)

[Claims] (1) A water storage facility is provided in each of the multiple districts, and this water storage facility is connected to a rainwater collection mechanism and a water supply mechanism to surrounding water facilities, and the multiple water storage facilities are connected by water channels. A wide-area irrigation facility that is characterized by: (2) The wide-area water utilization facility according to claim (1), wherein a drainage channel for domestic wastewater is connected to the water storage facility.