JP5558621B1 - Circulating water utilization system - Google Patents

Abstract

The present invention provides a circulating water utilization system capable of reducing energy and cost required for purifying circulating water in a purifier when considering a new circulating water utilization system.
A circulating water utilization system 1 constructed for a specific region, wherein a circulating flow path 2 through which the circulating water flows and a discharge for discharging discharged water discharged from a water demanding body 3 to the circulating flow path A purification device 8 that purifies the flow path 4 and the circulating water including the discharged water flowing through the circulation flow path in stages through a plurality of water quality levels; And a supply device 6 for supplying circulating water of the water quality level selected by 3b to the small-bore water demanding bodies 3a and 3b.
[Selection] Figure 1

Description

  The present disclosure relates to a circulating water utilization system constructed for a specific area.

  In order to effectively use limited water resources, systems that purify and reuse waste water discharged from buildings and homes have been known. For example, Patent Document 1 discloses a wastewater reuse system that can be configured to use drainage of rainwater and rainwater used in general households as washing water for flush toilets and the like to save water. . Further, Patent Document 2 discloses a facility for planting greenery in a building that uses middle water to process miscellaneous wastewater generated in the building to generate middle water and reuse the generated middle water as irrigation water for plants cultivated in the building. Is disclosed.

JP-A-8-19773 Japanese Patent Laid-Open No. 10-286033

By the way, the present applicant is considering a new circulating water utilization system that replaces the above-described conventional reuse system.
The conventional recycling system described above basically purifies the wastewater drained from the public water supply network and uses it as intermediate water for specific purposes, and the wastewater after use is discharged into the sewer network. Is done. In other words, it is premised on the existence of an existing public water supply network and sewer network, and cannot be a system that replaces this.

  On the other hand, the new circulating water utilization system that the applicant is considering is small-scaled for areas and complex facilities where, for example, 10,000 people live, as will be described in detail later. This system provides integrated water and sewage treatment services, and water is supplied and treated in a cyclical manner within the area and building. In other words, for the time being, this circulating water utilization system is considered to receive supply from the water supply only for drinking water, but basically it is independent of the existing public water and sewer network. It is a small-scale decentralized water and sewage integrated processing system.

  In examining such a new circulating water utilization system, it was a problem how to reduce the energy and cost consumed by the purification device to purify the circulating water to the water quality level required by the water consumer. .

  An object according to at least one embodiment of the present invention is to provide a circulating water utilization system capable of reducing energy and cost required for purifying circulating water in a purifier when considering a new circulating water utilization system. Is to provide.

Some embodiments of the invention include:
(1)
A circulating water use system constructed for a specific area,
A circulation channel through which the circulating water flows;
Circulating the discharged water discharged from a water demand body composed of a plurality of small water demand bodies consisting of at least one of a residence, a tenant, and an office that uses the circulating water flowing through the circulation channel. A discharge flow path for discharging to the flow path;
A purification device that purifies the circulating water including the discharged water flowing through the circulation flow path in stages through a plurality of water quality levels;
A supply device for supplying each small mouth water demand body with circulating water of a water quality level selected by each small mouth water demand body from the plurality of circulating water levels of water quality;
Have

According to the circulating water utilization system described in the above (1), the circulating water including the discharged water discharged from the water consumer is purified in stages through a plurality of water quality levels by the purifier. And it becomes possible for each small water demand body to select and use a desired water quality level from the several water quality levels obtained by the purification apparatus. That is, for small-bore water consumers who require a relatively high water quality level, circulating water purified to a high water quality level by a purification device is provided, and for small-bore water consumers that do not require a very high water quality level, Circulating water purified to the water quality level according to the demand can be provided.
Therefore, compared with the case where the highest level of circulating water is supplied to all water demand bodies, the energy and cost required for purification of the circulating water can be reduced while satisfying the water quality level required for each small water demand body. Can be reduced. Thereby, the flexible water and sewage integrated processing service according to a demand can be provided with respect to each small-lot water demand body.

(2) In some embodiments, in the circulating water utilization system according to (1) above,
The supply device includes a plurality of supply pipes for supplying circulating water to the respective small-mouth water demand bodies for each use of water, and a water quality level of the circulating water flowing through the plurality of supply pipes. And a switching means configured to switch to the water quality level selected for each application.
According to the circulating water utilization system described in (2) above, in comparison with the case where the highest level of circulating water among a plurality of water quality levels is supplied to all uses of water in the water demanding body, Energy and cost required for purification of circulating water can be reduced while satisfying a water quality level required for each use of water. Thereby, the more flexible water and sewage integrated processing service according to a demand can be provided with respect to a small-lot water demand body.
In addition, the use of water here includes, for example, for kitchens, bathrooms, and toilets. In this case, each of the small-lot water demanding bodies can select, for example, the highest level of circulating water among a plurality of water quality levels for the kitchen and bathroom, and a lower water quality level for the toilet, The highest level of circulating water can be selected for all bathrooms and toilets.

(3) In some embodiments, in the circulating water utilization system according to (2) above,
The switching means is configured to forcibly fix the water quality level of the circulating water flowing through at least one of the plurality of supply pipes to a predetermined water quality level in an emergency.

  In an emergency (when an earthquake or other disaster occurs), there is a possibility that sufficient energy consumed by the purification device cannot be secured to purify the circulating water. When circulating water is supplied using such limited energy, it is desirable to suppress energy consumption for purification in the purification device as much as possible in order to increase the amount of circulating water that can be supplied. Therefore, in the circulating water utilization system described in the above (3), in an emergency, the degree of freedom in selecting the water quality level is lowered, and the water quality level of the circulating water for at least one application is forcibly set to a predetermined water quality level (relatively). The switching means is configured to be fixed at a low level. Thereby, in an emergency, the energy consumed by the purification device to purify the circulating water can be saved, and the amount of circulating water that can be supplied to the water consumer can be increased.

(4) In some embodiments, in the circulating water utilization system according to (2) or (3) above,
A billing device for calculating a circulating water usage fee for each of the small-lot water consumers,
The charging device includes:
Measuring means for measuring the amount of circulating water used for each water quality level in each of the small-lot water consumers,
Charge calculation for calculating the circulating water usage charge in each of the small-lot water consumer based on the circulating water usage measured by the measuring means and the circulating water usage unit price set for each water quality level And
Have

  According to the circulating water utilization system described in (4) above, the circulating water usage fee is calculated based on the circulating water usage amount for each water quality level in each small water consumer and the unit price for each water quality level. Therefore, it is possible to charge the small-lot water consumer with an appropriate usage fee according to the quality level of the circulating water to be supplied. Moreover, energy and cost required for purifying circulating water with a purification device can be reduced by encouraging each small-bore water consumer to select an appropriate water quality level according to the water application. .

(5) In some embodiments, in the circulating water utilization system according to (4) above,
The water quality level of the circulating water in each small water consumer is changed based on the amount of circulating water used in each past small water consumer in the past certain period and the unit price of circulating water set for each water quality level. A predicting means for predicting a fluctuation amount of the circulating water usage charge accompanying the
Notification means for notifying each of the small-lot water demanding bodies of the fluctuation amount of the circulating water usage fee predicted by the prediction means.

According to the circulating water utilization system described in (5) above, the small-lot water demanding body can grasp the fluctuation amount of the circulating water usage fee associated with changing the water quality level of the circulating water. The water quality level can be selected in consideration of the fluctuation amount of the usage fee.
The form of notification by the notification means here includes display on a monitor, audio output, and the like.

(6) In some embodiments, in the circulating water utilization system according to (5) above,
In the prediction means, the amount of circulating water used for a certain period in the past is the amount of circulating water used for each application.

According to the circulating water utilization system described in (6) above, the small-bore water consumer can grasp the amount of fluctuation in the circulating water usage fee that accompanies changing the quality level of the circulating water for each application. The water quality level can be selected in consideration of the water quality level and the fluctuation amount of the usage fee.
The form of notification by the notification means here includes display on a monitor, audio output, and the like.

(7) In some embodiments, in the circulating water utilization system according to (6) above,
The notification means is a monitor provided in each small-bore water demand body, and performs the notification by displaying a fluctuation amount of the circulating water usage fee on the monitor.

  According to the circulating water utilization system described in (7) above, each small-bore water consumer can grasp the amount of fluctuation in the circulating water usage fee described in (6) via the monitor.

(8) In some embodiments, in the circulating water utilization system according to any one of (2) to (7) above,
Each of the plurality of supply pipes is configured such that a flow path is divided for each water quality level.

When circulating water with a relatively high water quality level passes through a flow path through which circulating water with a relatively low water quality level passes, the circulating water with a relatively high water quality level is contaminated, and the small water supply body has a desired water quality level circulation. It becomes difficult to supply water.
Therefore, as in the circulating water utilization system described in (8) above, each of the plurality of supply pipes is configured such that the flow path is divided for each water quality level, whereby the flow path through which the circulating water having a relatively high water quality level passes. Can be prevented from being contaminated by circulating water having a relatively low water quality level, and circulating water having a desired water quality level can be supplied to the small-bore water consumer.

(9) In some embodiments, in the circulating water utilization system according to (8) above,
Each of the plurality of supply pipes is composed of a multiple pipe that forms a flow path divided for each water quality level,
At least one pipe inside the outermost pipe among the plurality of pipes constituting the multiple pipe is configured to expand in the radial direction when the circulating water passes through the pipe.
Since the plurality of pipes are used to supply circulating water of different water quality levels for one application, they are not basically used at the same time. Therefore, by configuring the at least one tube as described in (9) above, it is possible to effectively utilize the space inside the outermost tube, so that all of the plurality of tubes do not expand with metal or the like. Compared to the case of using a material, the multiple tube can be reduced in size (reducing the cross-sectional area).

  According to at least one embodiment of the present invention, in examining a new circulating water utilization system, a circulating water utilization system capable of reducing energy and cost required for purifying circulating water in a purifier is provided. Can be provided.

It is the whole schematic diagram which showed the circulating water utilization system concerning some embodiment. It is a schematic diagram which shows the purification apparatus which concerns on some embodiment. It is a schematic diagram which shows the supply apparatus which concerns on some embodiment. It is a schematic diagram which shows the charging device which concerns on some embodiment. It is a schematic diagram which shows the prediction means and notification means which concern on some embodiment. (A) is a figure which shows an example of the display screen of the monitor in charge saving custom mode, (B) is a figure which shows the example of a display of the variation | change_quantity of the circulating water usage charge in this display screen. (A) is a schematic sectional drawing which shows the multiple pipe | tube which comprises each of several supply pipe | tube which concerns on some embodiment, (B) is one of the inner pipe | tubes in a multiple pipe | tube, circulating water is this It is a schematic sectional drawing which shows the state expanded to radial direction by passing through the inside of a pipe | tube. (A) is a schematic sectional drawing which shows the multiple pipe | tube which comprises each of several supply pipe | tube which concerns on some embodiment, (B) is one of the inner pipe | tubes in a multiple pipe | tube, circulating water is this It is a schematic sectional drawing which shows the state expanded to radial direction by passing through the inside of a pipe | tube.

Hereinafter, embodiments of the present invention will be described in more detail based on the drawings.
However, the scope of the present invention is not limited to the following embodiments. The dimensions, materials, shapes, relative arrangements, and the like of the component parts described in the following embodiments are not merely intended to limit the scope of the present invention, but are merely illustrative examples.

FIG. 1 is an overall schematic diagram showing a circulating water utilization system according to some embodiments of the present invention.
The circulating water utilization system 1 is a system constructed for a specific area separately from the public water supply network. The population scale targeted by this system is assumed to be approximately 5,000 to 20,000. The target area includes a condominium that is a collection of residences, an office building that is a collection of offices, a commercial facility that is a collection of tenants, and a complex facility in which these are mixed.

  As shown in FIG. 1, the circulating water utilization system 1 includes a circulation channel 2, a water demand body 3, a discharge channel 4, a supply device 6, a purification device 8, and the like.

The circulation channel 2 is configured as a pipe network in which water pipes are arranged in a closed loop shape. Devices such as a pump (not shown) and a valve (not shown) are appropriately arranged in the circulation channel 2 according to the terrain conditions so that the circulating water circulates in one direction.
The raw water of the circulating water flowing through the circulation channel 2 is not limited to tap water supplied from a public water supply, and may be well water, water taken from a river, water obtained by desalinating seawater, rainwater, or the like. Further, when the circulating water is insufficient, the raw water may be taken into the circulation channel 2 as makeup water from the outside. In addition, when taking these raw | natural waters into the circulation flow path 2 as make-up water, it is good to take in into the processing tank of the purification | cleaning means 8 mentioned later according to the water quality level. For example, well water with relatively good water quality, water taken from rivers, and water from which seawater has been desalted are taken into the rough membrane container L4 or the fine membrane container L5 of the purification means 8 described later, and rainwater with relatively poor water quality is taken into account. It is good to comprise so that it may take in in the air permeable container L2 and the aerobic container L3.

  The water consumer 3 is a main body that uses the circulating water flowing through the circulation channel 2 as domestic water. The water demanding body 3 is constituted by a plurality of small water demanding bodies consisting of at least one of the residence 3a, the tenant 3b, and the office 3c. The dwelling 3a refers to a room in a condominium where one household lives or a detached house. The tenant 3b refers to a store that provides services to general customers in a section of a commercial facility. The business types include, for example, retail stores such as clothing stores, general stores, drug stores, liquor stores, and restaurants, restaurants, cafes, sushi restaurants, taverns, and the like. The office 3c refers to a place where a worker who works in a part of an office building performs office work for a certain purpose.

  Examples of the use of domestic water in the residence 3a include showers, baths, laundry, dishwashing, hand washing and face washing, toilets, and the like. Examples of the use of domestic water in the tenant 3b include washing and toilets. Moreover, the amount of water demand varies greatly depending on the type of industry. For example, restaurants use a much larger amount of domestic water than retailers. The use of domestic water in the office 3c is mainly a toilet.

  The discharge channel 4 is a channel for draining the drain water discharged from the water consumer 3 to the circulation channel 2. The discharged water discharged from the discharge flow path 4 includes other water derived from outside the system in addition to the circulating water used by the water consumer 3 as domestic water.

The purification device 8 is configured to purify the circulating water including the discharged water flowing through the circulation channel 2 in a stepwise manner through a plurality of water quality levels.
FIG. 2 is a specific configuration example of the purification device 8 according to some embodiments. The purification apparatus 8 uses a container-type treatment tank in which a treatment apparatus that performs one treatment step among a series of purification steps is stored in a container. And it is comprised by connecting this container type processing tank in series along the order of a process process. In the embodiment shown in FIG. 2, the purification device 8 includes a screen / flow control container L1, an anaerobic container L2, an aerobic container L3, a rough membrane container L4, a fine membrane container L5, an ozone treatment container L6, and a water sterilization container L7. The sterilization container L8 is configured by being connected in series in this order.

  The screen / flow rate adjusting container L1 is a treatment tank that removes the inspection and oil contained in the discharged water, and includes equipment such as an oil trap and a screen device. The anaerobic container L2 and the aerobic container L3 are treatment tanks for performing anaerobic treatment and aerobic treatment to remove organic substances contained in the discharged water. As the treatment method, various known treatment methods such as A20 activated sludge method, batch activated sludge method, contact oxidation method, oxidation ditch method and the like can be adopted. The coarse film container L4 is a treatment tank for separating sludge from the discharged water. Various apparatuses and methods such as a precipitation tank, MF membrane, UF membrane, and centrifugal separation can be employed. The fine membrane container L5 is a treatment tank for increasing the quality of the circulating water to the level of water supply. Various devices and methods such as reverse osmosis membrane, activated carbon, sand filtration, ozone generator, ion exchange, and mineral addition device can be employed. The ozone treatment container L6 is a treatment tank for performing ozone treatment on the purified circulating water. The water storage sterilization container L7 is a treatment tank for temporarily storing the purified circulating water while storing and sterilizing the water with ultraviolet rays. The sterilization container L8 is a treatment tank for sterilizing and purifying the purified circulating water with ultraviolet rays, chlorine, ozone, or the like.

  The sludge return / sludge dewatering container L9 is a treatment tank for dewatering and drying the sludge. The sludge storage containers L10 and L11 are treatment tanks for storing wastes generated in the sewage treatment such as sludge cakes and grinds. . Excess sludge such as sludge cake stored in the sludge storage containers L10 and L11 is taken out of the system, for example, by being collected by a fertilizer supplier.

  In the purification apparatus 8 illustrated in FIG. 1 and FIG. 2, by purifying the circulating water including the discharged water, a total of 5 ranks of S rank, A rank, B rank, C rank, and D rank in order from the highest water quality level. Rank circulating water can be obtained. The S rank circulating water obtained from the disinfecting container L8 is supplied to the switching means 10 described later through the pipe 2s. The rank A circulating water obtained from the water storage sterilization container L7 is supplied to the switching means 10 described later through the pipe 2a. The B rank circulating water obtained from the ozone treatment container L6 is supplied to the switching means 10 described later through the pipe 2b. The C rank circulating water obtained from the fine membrane container L5 is supplied to the switching means 10 described later through the pipe 2c. D rank circulating water obtained from the rough membrane container L4 is supplied to the switching means 10 described later through the pipe 2d. The above-described circulation flow path 2 is configured by the pipes 2 s to 2 d and the pipe 2 w (see FIG. 1) through which the discharged water flows from the discharge flow path 4.

  In addition, arrangement | positioning and a structure of the processing tank of the purification apparatus 8 mentioned above are examples, Comprising: It can change variously according to the water quality of the wastewater discharged | emitted, and the target purification level. Moreover, the code | symbol TW in a figure has shown the flow of the tap water supplied from a public water supply network. Thus, you may comprise so that tap water may be supplied also to the circulation flow path 2 as make-up water as needed. The supply position in this case is preferably on the downstream side of the fine membrane container L5 where the purification process of the discharged water is almost completed. Moreover, the code | symbol WW4 in a figure is a return pipeline for sending concentrated water to the screen / flow control container L1.

  Thus, in the new circulating water utilization system 1 that the present applicant is examining, as a purification device 8 that purifies the discharged water, one treatment process is divided into a series of three or more treatment processes. A container-type processing tank in which a processing apparatus to be performed is stored inside a container is used. Then, a container-type processing tank that performs the first processing step, a container-type processing tank that performs the next processing step, and a container-type processing tank that performs the subsequent processing steps are brought into the field, and each is connected in series with a connecting pipe. The purification device 8 is constructed by connecting to. Such a container-type treatment tank is excellent in portability because it can be loaded and transported on a truck as it is. Moreover, since it is detachably accommodated in the container container, it can be installed and removed freely.

  The processing capacity per processing tank of the container-type processing tank is assumed to be a scale capable of processing about 1,000 people of discharged water. For this reason, for example, when this circulating water utilization system is introduced to an area or complex facility where 10,000 people live, a plurality of (for example, 10) treatment tanks that perform the same treatment process are required. Become. Thus, by providing a plurality of processing tanks that perform the same processing step, the processing capacity per processing tank can be reduced. Therefore, it is possible to flexibly cope with population fluctuations and water demand seasonal fluctuations in the target area. Moreover, it is easy to prepare an alternative processing tank, and the maintenance is excellent.

  Next, the supply device 6 will be described.

  The supply device 6 includes a switching means 10, a plurality of supply channels 12 and 14 that supply the circulated water purified by the purification device 8 as domestic water to the small-mouth water demanding bodies 3 a and 3 b, respectively, and the small-sized water demanding bodies. It has the selection means 16 and 18 for each small-mouth water demand body 3a and 3b selecting the water quality level of the circulating water used by 3a and 3b. The switching means 10 is configured to switch the water quality level of the circulating water flowing through the supply flow path 12 to the water quality level selected via the selection means 16 by the small-bore water demanding body 3a, and flows through the supply flow path 14. The water quality level of the circulating water is switched to the water quality level selected via the selection means 18 by the small-bore water demanding body 3b.

  In this way, the supply device 6 has a small water demand body 3a out of circulating water having a plurality of water quality levels (S rank to D rank in the embodiment of FIGS. 1 and 2) purified by the purification device 8. The circulating water of the water quality level selected by the selection means 16 and 18 by 3b is supplied to the small-bore water demanding bodies 3a and 3b as domestic water. Thereby, it becomes possible for each small water demand body 3a, 3b to select and use a desired water quality level from a plurality of water quality levels obtained by the purification device 8. That is, for small-bore water demanders (for example, 3a) that require a relatively high water quality level, circulating water that has been purified to a high water quality level (for example, S rank) by the purification device is provided, and a very high water quality level is not required. For small-bore water demanding bodies (for example, 3b), it is possible to provide circulated water purified to a water quality level (for example, A rank) according to the demand.

  Therefore, the water quality required for each small water demand body is compared with the case where the highest level (S rank in the embodiment of FIGS. 1 and 2) of the plurality of water quality levels is supplied to all the water demand bodies 3. Energy and cost required for purification of circulating water can be reduced while satisfying the level. Thereby, the flexible water and sewage integrated processing service according to a demand can be provided with respect to each small water demand body 3a, 3b.

In some embodiments, the supply device 6 may include a plurality of supply pipes that supply circulating water to the small-bore water demanding bodies 3a and 3b for each use of water. That is, each of the supply flow paths 12 and 14 may be configured by a plurality of supply pipes that supply circulating water to the small-bore water demanding bodies 3a and 3b for each use of water.
The supply device 6 according to this embodiment will be described with reference to FIG. As shown in FIG. 3, the supply device 6 includes a plurality of supply pipes 12 a to 12 c that supply circulating water for each use of water (for kitchens, bathrooms, and toilets) in the small-bore water demanding body 3 a. The supply device 6 includes a plurality of supply pipes 14a and 14b for supplying circulating water for each use of water (for kitchens and toilets) in the small-bore water demanding body 3b. Moreover, the switching means 10 with which the supply apparatus 6 is equipped is the water quality which selected the water quality level of the circulating water which flows through several supply pipes 12a-12c, 14a, 14b for each use of water by each small water demand body 3a, 3b. It is configured to switch to each level.

  According to the circulating water utilization system 1 having such a supply device 6, each small water is compared with a case where the highest level of circulating water among a plurality of water quality levels is supplied to all uses of the water in the water demanding body 3. Energy and cost required for purification of circulating water can be reduced while satisfying a water quality level required for each use of water in the demand bodies 3a and 3b. Thereby, the more flexible water and sewage integrated processing service according to a demand can be provided with respect to the small water demand bodies 3a and 3b.

  Next, the selection devices 16 and 18 (see FIG. 1) in FIG. 3 will be described. As shown in FIG. 3, the selection devices 16 and 18 are provided in the respective small water demand bodies 3a and 3b. The selection device 16 has a water quality level of circulating water (circulated water flowing through the supply pipe 12a in FIG. 3) used in the kitchen, and a water quality level of circulating water (circulated water flowing through the supply pipe 12b in FIG. 3) used in the bathroom. The small-sized water consumer 3a can select the water quality level of the circulating water used in the toilet (circulated water flowing through the supply pipe 12c in FIG. 3) from among ranks S to D. The configuration of the selection device 18 is the same as that of the selection device 16 except that there is no bathroom as a selectable water application. Information on the water quality level of the circulating water for each use of the small water demanding bodies 3a and 3b selected by the small water demanding bodies 3a and 3b via the selection devices 16 and 18 is shown in FIG. It is transmitted to the switching means 10 shown. Based on the information, the switching means 10 selects the water quality level of the circulating water flowing through the plurality of supply pipes 12a to 12c, 14a and 14b for each use of the water by the small-bore water demanding bodies 3a and 3b as described above. Switch to different water quality levels.

  In some embodiments, the switching means 10 shown in FIG. 3 forces the water quality level of the circulating water flowing through at least one of the plurality of supply pipes 12a to 12c, 14a, 14b in an emergency. Configured to lock to a predetermined water quality level.

  In an emergency (when a disaster such as an earthquake occurs), there is a possibility that sufficient energy consumed by the purification device 8 to purify the circulating water cannot be secured. When circulating water is supplied using such limited energy, it is desirable to suppress energy consumption for purification in the purification device 8 as much as possible in order to increase the amount of circulating water that can be supplied. Therefore, in an emergency, the degree of freedom in selecting the water quality level is lowered and the water quality level of the circulating water in at least one application (for example, for toilets) is forced to a predetermined water quality level (a level lower than the highest water quality level). The switching means is configured to be fixed. Thereby, in an emergency, the energy consumed by the purification device 8 to purify the circulating water can be saved, and the amount of circulating water that can be supplied to the water demanding body 3 can be increased.

In some embodiments, as shown in FIG. 4, the circulating water utilization system 1 includes a charging device 20 that calculates the circulating water usage charges of the small-mouth water demanding bodies 3a and 3b.
The billing apparatus 20 shown in FIG. 4 has the measurement means 22 and 24 which measure the amount of circulating water used for each water quality level in each of the small-mouth water demanding bodies 3a and 3b, and the circulating water usage charge of each of the small-sized water demanding bodies 3a and 3b. And a charge calculation unit 26 for calculation. In one embodiment, the unit price of circulating water is set so that the unit price of use increases as the water quality level increases. As shown in FIG. 4, the charge calculation unit 26 uses the circulating water usage for each water quality level in each of the small-mouth water demanding bodies 3a and 3b measured by the measuring means 22 and 24 (for example, one week in the small-sized water demanding body 3a). 1100 liters of S rank circulating water, 150 liters of A rank circulating water, 0 liters of other rank circulating water), and the unit cost of circulating water set for each water quality level (for example, S rank) 10 yen / 1 liter, A rank 9 yen / 1 liter, B rank 7 yen / 1 liter, C rank 2 yen / 1 liter, D rank 1 yen / 1 liter) It is comprised so that the circulating water usage fee in the demand bodies 3a and 3b may be calculated. The charge calculation unit 26, for example, determines the circulating water usage charges (for a certain period) of the small-bore water demanding bodies 3a and 3b, the circulating water usage for each water quality level (for a certain period), and the circulating water for each water quality level. You may obtain | require by accumulating a usage unit price.

  According to the circulating water utilization system 1 having the charging device 20, the circulating water usage amount for each water quality level in each of the small water demanding bodies 3a and 3b and the circulation unit price for each water quality level are thus circulated. Since the water usage fee is calculated, an appropriate usage fee according to the quality level of the circulating water to be supplied can be charged to the small water consumer. Thereby, each small water demand body 3a, 3b can select the water quality level of the circulating water to be used in consideration of the water quality level of the circulating water and the charged circulating water usage fee. Moreover, energy and cost required for purifying circulating water with the purification device 8 can be reduced by encouraging each small-bore water demanding body to select an appropriate water quality level according to the use of water. I can do it.

  As shown in FIG. 5, the circulating water utilization system 1 according to some embodiments includes fluctuations in the circulating water usage fee associated with changing the water quality level of the circulating water for each use in the small-bore water demanding bodies 3a and 3b. Prediction means 28 for predicting the amount, and notification means 30 for notifying the respective small-bore water demanding bodies 3a, 3b of the fluctuation amount of the circulating water usage fee predicted by the prediction means 28. As shown in FIG. 5, the predicting means 28 is based on the circulating water usage amount in the past fixed period for each usage in the small-bore water demanding bodies 3 a and 3 b and the circulating water usage unit price set for each water quality level. The fluctuation amount is predicted.

  In this case, the selection devices 16 and 18 can select the charge saving custom mode shown below. FIG. 6A is an example of a display screen of the monitor 160 included in the selection device 16 when the charge saving custom mode is selected in the selection device 16 of FIG. In this example, the monitor 160 functions as the notification unit 30. The prediction means 28 is provided on a memory of a microcomputer constituting the selection devices 16 and 18.

  On the display screen of the monitor 160 shown in FIG. 6 (A), the amount of circulating water used for each usage in the small water demand body 3a for the past week (100 liters in the kitchen, 1000 liters in the bathroom, 150 liters in the toilet), The water quality level selected for each application (S rank in the kitchen, S rank in the bathroom, A rank in the toilet) and the unit price of the circulating water set for each water quality level (10 yen per liter in the S rank, A 9 rank / 1 liter in rank, 7 yen / 1 liter in B rank, 2 yen / 1 liter in C rank, 1 yen / 1 liter in D rank).

  For the display screen shown in FIG. 6 (A), for example, when the small mouth water demanding body 3a selects the bathroom mark (if the display screen is a touch panel, touch the bathroom mark), as shown in FIG. 6 (B) The change amount of the circulating water usage fee when the water quality level of the circulating water for the bathroom is changed is displayed. In FIG. 6 (B), since the S rank circulating water is currently used in the bathroom, the change amount of the circulating water usage charge when changing to the A rank circulating water and the B rank circulating water are changed. The amount of change in the circulating water usage charge is displayed on the screen.

In some embodiments, as a method of displaying the above-described fluctuation amount, for example, on the screen of the monitor 160, the circulating water usage fee for the past week and the circulating water usage fee for one week after the water quality level change are displayed. The predictions may be displayed side by side. In other embodiment, you may notify the small amount water demand body 3a by the audio | voice of the above-mentioned fluctuation amount.
Further, FIG. 6 illustrates the display screen of the monitor 160 when the selection device 16 selects the charge saving custom mode. However, the display screen of the monitor in the selection device 18 does not require a bathroom for water use. Other than this, the selection device 16 is the same.

  According to the circulating water utilization system 1 having the prediction means 28 and the notification means 30 described above, the small-bore water demanding bodies 3a and 3b change the circulating water usage charge accompanying the change in the quality level of the circulating water for each application. Since the amount can be grasped, the water quality level can be selected in consideration of the water quality level of the circulating water and the fluctuation amount of the usage fee.

FIG. 7A is a schematic cross-sectional view illustrating several embodiments according to the configuration of each of the plurality of supply pipes 12a to 12c, 14a, and 14b illustrated in FIG. Since the configuration of each of the plurality of supply pipes 12a to 12c, 14a, and 14b is basically the same, hereinafter, the supply pipe 12a is taken as an example for the configuration common to each of the supply pipes 12a to 12c, 14a, and 14b. explain.
As shown in FIG. 7A, the supply pipe 12a is configured as a multiple pipe having a plurality of flow paths separated for each water quality level. The multiple tube is configured by a plurality of tubes 12a ₁ to 12a ₅ corresponding to a plurality of water quality levels. That is, circulating water at the S-rank water quality level passes through the pipe 12a ₁ , circulating water at the A-rank water quality level passes through the pipe 12a ₂ , circulating water at the B-rank water quality level passes through the pipe 12a ₃ , and the pipe 12a ₄ Is configured such that circulating water having a water quality level of C rank passes through, and circulating water having a water quality level of D rank passes through the pipe 12a ₅ . The tubes 12a1 to 12a5 have different diameters, and a relatively small diameter tube is disposed inside a relatively large diameter tube. In this way, each of the plurality of supply pipes 12a to 12c, 14a, 14b is configured such that the flow path is divided for each water quality level, so that the flow path through which the circulating water having a relatively high water quality level passes has a relatively low water quality level. Contamination by circulating water is suppressed, and circulating water having a desired water quality level can be supplied to the small-bore water demanding bodies 3a and 3b.

Also, multiple tube 12a (the supply pipe 12a) shown in FIG. 7 (A), at least one tube the most from the outer tube 12a ₁ inside of the plurality of tubes 12a ₁ ~ pipe 12a ₅ constituting the multi-tube 12a ( 12a _{2 to} 12a ₅ ) is made of a stretchable member such as rubber so that the circulating water expands in the radial direction by passing through the pipe. For example, the tube 12a ₃ in FIG. 7 (A), if configured to expand radially by circulating water passes through the tube 12a _3, the inner tube 12a ₃ is the inner tube a _{When the} circulating water passes through _3, the water expands in the radial direction as shown in FIG. 7B, and the cross-sectional area of the inner tube 12 a ₃ increases.

Supply pipe 12a, in order to be used to supply the circulating water of different quality levels for one application, the plurality of tubes 12a ₁ ~12a ₅ essentially simultaneously not used. Therefore, by constituting so as to inflate the at least one inner tube most from outside of the outer tube 12a ₁ inside of the plurality of tubes 12a 1 _~ pipe 12a ₅ as described above in the radial direction, the outermost outer tube Since the space inside 12a ₁ can be used effectively, the supply pipe 12a can be downsized as compared with the case where all of the plurality of pipes 12a _{1 to} 12a ₅ are made of a non-stretchable material such as metal or plastic. (The cross-sectional area can be reduced).

FIG. 8A is a schematic cross-sectional view showing several embodiments according to the configuration of each of the plurality of supply pipes 12a to 12c, 14a, and 14b shown in FIG. Since the configuration of each of the plurality of supply pipes 12a to 12c, 14a, and 14b is basically the same, hereinafter, the supply pipe 12a is taken as an example for the configuration common to each of the supply pipes 12a to 12c, 14a, and 14b. explain.
As shown in FIG. 8A, the supply pipe 12a is configured as a multiple pipe having a plurality of flow paths separated for each water quality level. The multiple tube is configured by a plurality of tubes 12a ₁ to 12a ₅ corresponding to a plurality of water quality levels. That is, circulating water at the S-rank water quality level passes through the pipe 12a ₁ , circulating water at the A-rank water quality level passes through the pipe 12a ₂ , circulating water at the B-rank water quality level passes through the pipe 12a ₃ , and the pipe 12a ₄ Is configured such that circulating water having a water quality level of C rank passes through, and circulating water having a water quality level of D rank passes through the pipe 12a ₅ . The supply pipe 12a is configured by arranging pipes 12a2 to 12a5 having substantially the same diameter inside the pipe 12a1 having the largest diameter so as to be adjacent to each other. That is, the pipe 12a2 to the pipe 12a5 are respectively arranged outside the other pipes inside the pipe 12a1. In this way, each of the plurality of supply pipes 12a to 12c, 14a, 14b is configured such that the flow path is divided for each water quality level, so that the flow path through which the circulating water having a relatively high water quality level passes has a relatively low water quality level. Contamination by circulating water is suppressed, and circulating water having a desired water quality level can be supplied to the small-bore water demanding bodies 3a and 3b.

Also, multiple tube 12a (the supply pipe 12a) shown in FIG. 8 (A), at least one tube the most from the outer tube 12a ₁ inside of the plurality of tubes 12a ₁ ~ pipe 12a ₅ constituting the multi-tube 12a ( 12a _{2 to} 12a ₅ ) is made of a stretchable member such as rubber so that the circulating water expands in the radial direction by passing through the pipe. For example, the tube 12a ₃ in FIG. 8 (A), the case being configured to expand radially by circulating water passes through the tube 12a _3, the inner tube 12a ₃ is the inner tube a _{When the} circulating water passes through ₃ , it expands in the radial direction as shown in FIG. 8B, and the cross-sectional area of the inner tube 12 a ₃ increases.
By configuring to expand the outermost from the outer tube 12a ₁ inside the at least one inner pipe diameter direction in the plurality of tubes 12a 1 _~ pipe 12a ₅ as described above, referring to FIG. 7 (B) it is possible to effectively utilize the supply tube 12a as well as the outermost inner space of the outer tube 12a ₁ described Te, a _{1 ~12a 5} all of the plurality of tubes 12a in a non-stretchable material, such as metal or plastic Compared with the case where it comprises, supply pipe | tube 12a can be reduced in size (a cross-sectional area is reduced).

  As mentioned above, although the preferable form of this invention was demonstrated, this invention is not limited to said form. For example, the above-described embodiments may be combined, and various modifications can be made without departing from the object of the present invention.

  At least one embodiment of the present invention can be suitably used in a circulating water utilization system constructed for a specific area separately from a public water supply network.

DESCRIPTION OF SYMBOLS 1 Circulating water utilization system 2 Circulating flow path 2a, 2b, 2c, 2d, 2s Piping 3 Water demand body 3a Small water demand body (residence)
3b Small water demand body (tenant)
3c Koguchi water demand body (office)
4 Discharge flow path 6 Supply device 8 Purification device 10 Switching means 12 Supply flow path 12a, 12b, 12c Supply pipe 14 Supply flow path 14a, 14b Supply pipe 16, 18 Selection means 20 Charging apparatus 22 Measurement means 26 Fee calculation section 28 Prediction Means 30 Notification means 160 Monitor

Claims (10)

A circulating water use system constructed for a specific area,
A circulation channel through which the circulating water flows;
Circulating the discharged water discharged from a water demand body composed of a plurality of small water demand bodies consisting of at least one of a residence, a tenant, and an office that uses the circulating water flowing through the circulation channel. A discharge flow path for discharging to the flow path;
A purification device that purifies the circulating water including the discharged water flowing through the circulation flow path in stages through a plurality of water quality levels;
A plurality of supply pipes for supplying the circulated water purified by the purification device to each of the small-bore water consumers for each use of water;
Selection means for each small-mouth water demand body to select the water quality level of the circulating water for each application in each small-mouth water demand body from the plurality of water quality levels;
Notification means configured to notify each small-mouth water demand body of the water quality level for each application of the small-sized water demand body selected via the selection means;
Switching means configured to switch the water quality level of the circulating water flowing through the plurality of supply pipes to the water quality level for each use selected by each small-bore water consumer via the selection means;
A circulating water utilization system. The said notification means is a circulating water utilization system of Claim 1 comprised so that it may notify each said small-lot water demand body of the usage price of the circulating water set for every said water quality level further. A circulating water use system constructed for a specific area,
A circulation channel through which the circulating water flows;
Circulating the discharged water discharged from a water demand body composed of a plurality of small water demand bodies consisting of at least one of a residence, a tenant, and an office that uses the circulating water flowing through the circulation channel. A discharge flow path for discharging to the flow path;
A purification device that purifies the circulating water including the discharged water flowing through the circulation flow path in stages through a plurality of water quality levels;
A supply device for supplying each small mouth water demand body with circulating water of a water quality level selected by each small mouth water demand body from the plurality of circulating water levels of water quality;
Have
The supply device includes a plurality of supply pipes for supplying circulating water to the respective small-mouth water demand bodies for each use of water, and a water quality level of the circulating water flowing through the plurality of supply pipes. Switching means configured to respectively switch to the water quality level selected for each use by
It said switching means, recycling water utilization system configured to secure the quality level of the circulating water flowing through the at least one supply tube to force the predetermined water level in the emergency of the plurality of supply pipes. A circulating water use system constructed for a specific area,
A circulation channel through which the circulating water flows;
Circulating the discharged water discharged from a water demand body composed of a plurality of small water demand bodies consisting of at least one of a residence, a tenant, and an office that uses the circulating water flowing through the circulation channel. A discharge flow path for discharging to the flow path;
A purification device that purifies the circulating water including the discharged water flowing through the circulation flow path in stages through a plurality of water quality levels;
A supply device for supplying each small mouth water demand body with circulating water of a water quality level selected by each small mouth water demand body from the plurality of circulating water levels of water quality;
A charging device for calculating a circulating water usage fee for each of the small-bore water consumers;
Have
The charging device is
Measuring means for measuring the amount of circulating water used for each water quality level in each of the small-lot water consumers,
Charge calculation for calculating the circulating water usage charge in each of the small-lot water consumer based on the circulating water usage measured by the measuring means and the circulating water usage unit price set for each water quality level And
Recycling water use systems that have a. The water quality level of the circulating water in each of the small water consumers is changed based on the amount of circulating water used in each past small water consumer and the unit price of the circulating water set for each water quality level. Predicting means for predicting the amount of change in the circulating water usage fee associated with
The circulating water utilization system according to claim 4, further comprising notification means for notifying each of the small water demanding bodies of the fluctuation amount of the circulating water usage fee predicted by the prediction means. The circulating water utilization system according to claim 5, wherein in the prediction means, the amount of circulating water used in a past fixed period is the amount of circulating water used for each application.   The use of circulating water according to claim 5 or 6, wherein the notification means is a monitor provided in each small-bore water consumer, and the notification is performed by displaying a fluctuation amount of the circulating water usage fee on the monitor. system. The supply device includes a plurality of supply pipes for supplying circulating water to the respective small-mouth water demand bodies for each use of water, and a water quality level of the circulating water flowing through the plurality of supply pipes. The circulating water utilization system according to any one of claims 4 to 7, further comprising switching means configured to respectively switch to a water quality level selected for each use by the above. A circulating water use system constructed for a specific area,
A circulation channel through which the circulating water flows;
Circulating the discharged water discharged from a water demand body composed of a plurality of small water demand bodies consisting of at least one of a residence, a tenant, and an office that uses the circulating water flowing through the circulation channel. A discharge flow path for discharging to the flow path;
A purification device that purifies the circulating water including the discharged water flowing through the circulation flow path in stages through a plurality of water quality levels;
A supply device for supplying each small mouth water demand body with circulating water of a water quality level selected by each small mouth water demand body from the plurality of circulating water levels of water quality;
Have
The supply device includes a plurality of supply pipes for supplying circulating water to the respective small-mouth water demand bodies for each use of water, and a water quality level of the circulating water flowing through the plurality of supply pipes. Switching means configured to respectively switch to the water quality level selected for each use by
Each of the plurality of supply pipes is composed of multiple pipes,
The multi-tube, recycling water use system that consists of a plurality of tubes corresponding to said plurality of quality levels. The circulating water according to claim 9 , wherein at least one pipe inside the outermost pipe among the plurality of pipes is configured to expand in a radial direction when the circulating water passes through the pipe. Usage system.

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