Temporary water purification bath equipment

Abstract

We provide a temporary water purification bath system that uses rock extract to create a coagulated substance, making it easier to filter. [Solution] The temporary water purification bath equipment includes a temporary bathroom (70) equipped with a bathtub or shower, a non-drinking water tank (10) for storing non-drinking water including drainage from the bathtub or shower, a drainage channel (C8) for introducing drainage from the bathtub or shower into the non-drinking water tank, and a first filter for filtering out debris contained in the non-drinking water from the non-drinking water tank. Furthermore, the equipment includes a mineral supply device for supplying rock extract obtained by extracting from rocks to the filtered non-drinking water, a primary tank for storing the non-drinking water supplied with rock extract, a second filter for converting the water into semi-drinking water, a heater (60) for heating the semi-drinking water filtered by the second filter, and a supply channel (C5) for supplying the semi-drinking water heated by the heater to the bathtub or shower.

Description

Technical Field

[0001] The present invention relates to a temporary water purification bath facility for providing a temporary bath for disaster victims who have suffered disasters such as earthquakes.

Background Art

[0002] When a large-scale disaster such as an earthquake occurs, it is difficult for households to take a bath because infrastructure facilities such as water supply are damaged. Therefore, it has been proposed to transport and install temporary bath facilities in the area. When using bath facilities, the water in the bathtub is generally drained because it is contaminated by organic substances and the like during bathing. However, water is extremely precious in disaster areas and the use of draining is not preferable. Therefore, it is conceivable to use a circulating bath equipped with a filter. The device of Patent Document 1 includes a purification system equipped with a filtration facility, a distillation facility, and a sterilization facility equipped with a reverse osmosis membrane (RO) or the like. Therefore, the device of Patent Document 1 can remove impurities and harmful substances in raw water and provide sterilized purified water.

[0003] However, the temporary water purification bath facility disclosed in Patent Document 1 has problems that the reverse osmosis membrane (RO) needs to be frequently replaced and the power consumption for the heat source of the distillation facility is large. In addition, the reverse osmosis membrane (RO) has a problem that it is expensive compared to the price of a general water purification filter, and further, since distillation takes a long time, there is also a problem that it takes time to obtain purified water with high purity.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Therefore, the inventor believed that the above-mentioned drawbacks could be improved and diligently studied temporary water purification bath equipment that does not require the use of reverse osmosis (RO) membranes. As a result, this invention provides temporary water purification bath equipment that uses a rock extract to coagulate organic matter contained in non-drinking water such as leftover bathwater, making it easier to filter with a general filter. [Means for solving the problem]

[0006] The temporary water purification bath system of this embodiment includes a temporary bathroom equipped with a bathtub or shower, a non-drinking water tank for storing non-drinking water including drainage from the bathtub or shower, a drainage channel for introducing drainage from the bathtub or shower into the non-drinking water tank, and a first filter for filtering out debris contained in the non-drinking water from the non-drinking water tank. Furthermore, the temporary water purification bath system includes a mineral supply device for supplying a rock extract containing sulfur, iron, aluminum, magnesium, and potassium obtained from rocks to the filtered non-drinking water, a primary tank for storing the non-drinking water supplied with the rock extract, a second filter for filtering out aggregates that have aggregated in the non-drinking water due to the addition of the rock extract to the primary tank, converting it into semi-drinking water, a heater for heating the semi-drinking water filtered by the second filter, and a supply channel for supplying the semi-drinking water heated by the heater to the bathtub or shower. (Without ultrafine bubbles)

[0007] Another example of a temporary water purification bath system in this embodiment includes a temporary bathroom equipped with a bathtub or shower, a non-drinking water tank for storing non-drinking water including drainage from the bathtub or shower, a drainage channel for introducing drainage from the bathtub or shower into the non-drinking water tank, a first filter for filtering out debris from the non-drinking water, a mineral supply device for supplying a rock extract containing sulfur, iron, aluminum, magnesium, and potassium obtained from rocks to the filtered non-drinking water, and a primary tank for storing the non-drinking water to which the rock extract has been supplied. Furthermore, the temporary water purification bath system includes a second filter for filtering out aggregates that have aggregated in the non-drinking water due to the addition of the rock extract to the primary tank, converting it into semi-drinking water, a bubble supply device for supplying ultrafine bubbles to the semi-drinking water filtered by the second filter, a heater for heating the drinking water that has passed through the bubble supply device, and a supply channel for supplying the drinking water heated by the heater to the bathtub or shower. (With ultrafine bubbles)

[0008] These temporary water purification bath facilities may include a flow path that circulates non-drinking water between a primary tank and a second filter for a predetermined time to convert it into semi-drinking water, and a secondary tank for storing the semi-drinking water. The primary tank may also include an upper limit sensor for detecting the upper limit of non-drinking water storage and a lower limit sensor for detecting the lower limit of non-drinking water storage, and the supply of filtered non-drinking water may be stopped based on the upper limit detection by the upper limit sensor and started based on the lower limit detection by the lower limit sensor. [Effects of the Invention]

[0009] This invention allows non-drinking water, such as leftover bathwater, to be circulated and supplied to the bathtub and shower. [Brief explanation of the drawing]

[0010] [Figure 1] This is a conceptual diagram showing an example of a temporary water purification bath system according to the embodiment. [Figure 2] This is a conceptual diagram showing the first example of a water filtration system. [Figure 3] This is a flowchart showing the water filtration method for a water filtration system. [Figure 4] This is a flowchart showing the water filtration method for a water filtration system. [Figure 5] This is a conceptual diagram showing a second example of a water filtration system. [Modes for carrying out the invention]

[0011] The following describes a temporary water purification bath system according to an embodiment, with reference to the drawings. Note that Figures 1, 2, and 5 used in this explanation are schematic representations to the extent necessary to understand the invention, and some actual sizes and other details may be exaggerated.

[0012] <Overview of temporary water purification bath equipment> Figure 1 is a conceptual diagram showing a temporary water purification bathing system 100 according to this embodiment. The temporary water purification bathing system 100 is particularly useful in times of disaster, as it uses drainage from bathrooms, river water, lake water, rainwater, or muddy water (hereinafter referred to as "non-drinking water") as bathing water (in this specification, these are referred to as "semi-drinking water" or "drinking water" depending on the purification level).

[0013] The pump P, control device CON, and heater 60 are configured to operate on electricity obtained from solar power generation or wind power generation (not shown), or to be driven by electricity from a lithium-ion battery BT that stores electricity obtained from solar power generation or wind power generation. However, the temporary water purification bath equipment 100 may also be operated by connecting the power line to AC 100V or 200V instead of using the power from these solar power generation systems or battery BT. Furthermore, if gas supply is readily available, the heater 60 may be configured to heat water using gas instead of electricity.

[0014] The temporary water purification bathing facility 100 consists of a non-drinking water tank 10, a water filtration device 50, a heater 60, and a temporary bathroom 70.

[0015] <Non-drinking water tank> The non-potable water tank 10 is a tank for storing drainage from a bathroom, river water, lake water, rainwater, or the like. The water filtration device 50 filters non-potable water to generate potable water or quasi-potable water.

[0016] In this specification, quasi-potable water is water in which bacteria such as Escherichia coli have been sterilized and aggregates due to unnecessary organic substances and the like have been removed. Therefore, it has sufficient hygiene for bathing and can be used for drinking if necessary. Also, in this specification, potable water is water from which substances and fine particles contained in the liquid have been further removed from quasi-potable water. In this specification, in order to distinguish the water before passing through the ultra-fine bubble generator UFB described later from the water after passing through it, the water before passing through the ultra-fine bubble generator UFB is called quasi-potable water, and the water after passing through the ultra-fine bubble generator UFB is called potable water.

[0017] The non-potable water tank 10 has an upper limit sensor us for detecting the upper limit and a lower limit sensor ls for detecting the lower limit in order to detect how much non-potable water is stored in the tank. Instead of the upper limit sensor / lower limit sensor, the primary tank 20A (Fig. 2) may have a metering sensor.

[0018] <Heater> The potable water or quasi-potable water generated by the water filtration device 50 is sent to the heater 60 via the pipe C5. The heater 60 is, for example, an electric water heater that generates hot water by exchanging the heat of an electric heater that passes electricity through metal with the heat of potable water or quasi-potable water. As another example, there is a natural refrigerant heat pump water heater that compresses a refrigerant to generate a high-temperature refrigerant and exchanges the heat of the refrigerant with the heat of potable water or quasi-potable water to generate hot water. In this embodiment, either an electric water heater or a natural refrigerant heat pump water heater can be used. In large-scale disasters such as earthquakes, gas pipes such as city gas are often damaged, so an electric type is preferable, but a gas water heater may be used instead of an electric water heater and a natural refrigerant heat pump water heater.

[0019] <Temporary bathroom> Next, the configuration of the temporary bathroom 70 of the present embodiment will be described. It is a concept representing an example of the temporary bathroom 70. The interior of the temporary bathroom 70 is divided into a washing area and a dressing area (not shown), and at least one of a faucet 72, a bathtub 74, or a shower 76 is provided in the washing area. The bathtub 74 may be a bathtub made of FRP, a bathtub made of stainless steel, or a bathtub formed by stretching a waterproof sheet over a pipe frame. There is no particular limitation on the bathtub.

[0020] Pallets (not shown) are laid on the floor portion of the temporary bathroom 70, and the bathroom floor surface 78 is provided. The outer shell of the temporary bathroom 70 is a unit house (prefab) or a tent in which a tent sheet for the bathroom is stretched over metal columns.

[0021] A hot water supply pipe (flow path) C6 from the heater 60 is connected to the faucet 72, the bathtub 74, or the shower 76. It is preferable that a flow meter FM is provided in the hot water supply pipe C6. The flow rate measured by the flow meter FM is sent to the control device CON, and the control device CON instructs the amount of drinking water or quasi-drinking water generated by the water filtration device 50 or the heating amount in the heater 60.

[0022] A drain pipe C8 is provided in the bathtub 74 and the floor surface 78, and the remaining hot water in the bathtub 74 and the drain water from washing the body with a shower or the like are pressurized by a pump P8 and introduced into the non-drinking water tank 10 through the drain pipe C8. In FIG. 1, the pump P8 is configured to be controlled by the control device CON, but manual control may also be used.

[0023] <Configuration of the First Example of the Water Filtration Device> FIG. 2 is a conceptual diagram showing a water filtration device 50A according to the first example.

[0024] <Supply Process 1 of Rock Extract> A non-drinking water pipe (flow path) C1 is connected to the bottom of the non-drinking water tank 10. A solenoid valve V1 for opening and closing the non-drinking water pipe C1 and a pump P1 for sending non-drinking water downstream are connected to the non-drinking water pipe C1. Furthermore, a waste filter FL1 is placed in the non-drinking water pipe C1. Note that if the pump P1 has an automatic opening and closing mechanism, it is not necessary to provide the solenoid valve V1.

[0025] The debris filter FL1 filters out debris (insects, fallen leaves, plastic waste, etc.) contained in non-drinking water, either directly from the river by the pump P1 or from the non-drinking water tank 10. For example, it is preferable to use a debris filter FL1 with a mesh size of 100-200 (filtration accuracy or particle size, approximately 200 μm-70 μm). Specifically, it is preferable to use a commercially available disc filter or screen filter (irrigation filter that removes impurities). It is preferable to replace or clean the debris filter FL1 periodically depending on the frequency of use.

[0026] In the non-drinking water piping C1, a mineral supply device MDI is located downstream of the debris filter FL1. The mineral supply device MDI supplies the non-drinking water, from which debris has been removed, with a rock extract (containing mineral components) as described below. The first example of the mineral supply device MDI has a tank for storing the rock extract (not shown) and supplies the rock extract to the non-drinking water by opening a valve (not shown) based on the flow rate measured by a flow meter FM.

[0027] Specifically, when rock extract is supplied to non-drinking water, the minerals in the rock extract coagulate free chlorine, organochlorine compounds, and other organic substances contained in the non-drinking water, forming aggregates, and also killing bacteria such as E. coli or Salmonella. The aggregates produced by the supply of rock extract have a particle size of approximately 2 μm to 30 μm.

[0028] In the first example, the mineral supply device MDI supplied rock extract to non-drinking water by opening a valve based on the flow rate measured by the flow meter FM, but other methods, such as the Venturi method or a flow-proportional injector, may also be used. In the case of the Venturi method, a Venturi pipe having a region of reduced cross-sectional area and a region of expanded cross-sectional area is placed in the non-drinking water piping C1, and a nozzle for the rock extract is placed upstream of the reduced cross-sectional area, so that the rock extract is supplied to the non-drinking water through the nozzle under negative pressure.

[0029] <<Rock extract>> Rock extracts can be obtained by crushing rock, dissolving the crushed rock in inorganic acid, heat-treating it at 100-150°C for 8-12 hours, adjusting the pH with a citrate buffer, and removing the precipitate by filtration. Because rock extracts are extracted from rock, they are a primary source of trace elements, and compared to extracts from deep-sea water or biological sources such as plants and animals, they allow for the very easy and reliable extraction of a wide variety of trace elements in large quantities. Furthermore, by adjusting with a citrate buffer, the aggregate of trace elements, which are originally poorly soluble in water, becomes water-soluble, making them easier to use. In addition, by increasing the amount of inorganic acid, the heat treatment temperature can be raised, allowing for the more reliable and efficient extraction of trace elements contained in the rock, in line with their content balance.

[0030] Suitable rocks include greenstones mainly composed of chlorite, epidote, and actinolite, and / or maifan stone, which is a type of quartz porphyry or granophyre. Trace elements (minerals) such as sulfur, iron, aluminum, magnesium, potassium, titanium, phosphorus, sodium, manganese, and calcium can be extracted from these greenstones. Trace elements (minerals) such as silicon, aluminum, iron, magnesium, sodium, potassium, titanium, phosphorus, and manganese can be extracted from maifan stone. More details are disclosed in Japanese Patent No. 7606686.

[0031] In this specification, the rock extract is supplied to non-drinking water to be diluted 5,000 to 10,000 times. That is, the rock extract is in a proportion of 0.01% to 0.02% by volume relative to the non-drinking water.

[0032] When rock extract is added to non-drinking water at a rate of 0.01% to 0.02% by volume, Campylobacter, Escherichia coli, Pseudomonas aeruginosa, Salmonella, Shigella, Staphylococcus aureus, Streptococcus pyogenes, Vibrio cholerae, and Vibrio parahaemolyticus dramatically decrease over time.

[0033] <Filtration process 1 of aggregates using rock extract> Non-drinking water to which rock extract has been supplied is stored in primary tank 20A. The non-drinking water to which rock extract has been supplied is thoroughly mixed in primary tank 20A. A stirrer may be installed in primary tank 20A. When non-drinking water is flowing through pipes, etc. (flowing water state), the rock extract is less likely to form aggregates, so the rock extract and non-drinking water are mixed in primary tank 20A at a slow flow rate.

[0034] The primary tank 20A has an upper limit sensor (us) to detect the upper limit and a lower limit sensor (ls) to detect the lower limit in order to detect how much non-drinking water is stored in the tank.

[0035] A mixing pipe (flow channel) C2 is connected to the bottom of the primary tank 20A, and a pump P2 is connected to the mixing pipe C2 to send non-drinking water supplied with rock extract downstream. Furthermore, a coagulation filter FL2 is located on the mixing pipe C2. Downstream of the coagulation filter FL2, a two-way branch section D2 is located. One end of the two-way branch section is a first flow channel C31 connected to the primary tank 20A, and the other end of the two-way branch section D2 is a second flow channel C32 connected to the secondary tank 30. An electromagnetic valve V2 for opening and closing the flow channel is located on the first flow channel C31, and an electromagnetic valve V3 for opening and closing the flow channel is located on the second flow channel C32. Note that although electromagnetic valves V2 and V3 are depicted separately in Figure 2, a single electromagnetic valve can be used if a 3-port electromagnetic valve is used.

[0036] The coagulation filter FL2 primarily filters out coagulations contained in the non-drinking water stored in the primary tank 20A. As mentioned above, organochlorine compounds and other organic substances contained in the non-drinking water are coagulated by the mineral components of the rock extract, forming coagulations. In other words, the non-drinking water stored in the primary tank 20A contains coagulations. For this reason, it is preferable to use a coagulation filter FL2 with a mesh size of, for example, 1000-3500 mesh (filtration accuracy or filtration particle size of approximately 40 μm-2 μm).

[0037] When filtering the coagulation of non-drinking water from the primary tank 20A, the controller CON operates the pump P2, opens the solenoid valve V2, and closes the solenoid valve V3, circulating the non-drinking water from the primary tank 20A to the coagulation filter FL2 multiple times. This circulation mixes the mineral components of the rock extract with the non-drinking water, generating coagulation, and allowing small coagulations to grow into larger ones. These coagulations are then filtered by the coagulation filter FL2. The circulation from the primary tank 20A to the coagulation filter FL2 is preferably carried out for about 20 minutes to 1 hour, although this may vary depending on the size of the primary tank, the flow rate through the mixing pipe C2, and the performance of the coagulation filter FL2. After the predetermined time has been circulated, the non-drinking water is converted into semi-drinking water that does not contain coagulations.

[0038] Pre-drinking water is water that is safe for human consumption, from which unwanted organic matter and other aggregates have been removed. For this reason, the pre-drinking water may be sent to the heater 60 via piping C5 without passing through the ultrafine bubble generator UFB described below (see piping C5, shown as a dotted line in Figure 2).

[0039] <Sterilization process using ultrafine bubbles> The semi-drinkable water generated by the circulation of the water from the primary tank 20A to the coagulation filter FL2 for a predetermined time is sent to the secondary tank 30 and stored in the secondary tank 30. In order to store the semi-drinkable water in the secondary tank 30, the solenoid valve V2 is closed and the solenoid valve V3 is open when the pump P2 is operated.

[0040] The secondary tank 30 has an upper limit sensor (us) to detect an upper limit and a lower limit sensor (ls) to detect a lower limit in order to detect how much non-drinking water is stored in the tank. Instead of the upper limit / lower limit sensors, the secondary tank 30 may have a measuring sensor.

[0041] A pipe C4 is connected to the bottom of the secondary tank 30, and a pump P3 that sends semi-drinking water downstream is connected to this pipe C4. Furthermore, a bubble generator UFB is located on pipe C4.

[0042] An ultrafine bubble generator (UFB), for example, an ejector type, generates ultrafine bubbles by supplying air from a blower through an air supply tube to mixed and dissolve quasi-drinking water with the air. Ultrafine bubbles are ultra-fine bubbles with an average diameter of 1000 nm or less, and formed to a size of 200-700 nm, preferably 400 to 500 nm. An ultrafine bubble generator (UFB) has a static mixer, of which there are many different types. This static mixer can stir the air and quasi-drinking water, allowing the ultrafine bubbles to dissolve into the quasi-drinking water.

[0043] The ultrafine bubble generator UFB may be of the Venturi type. A Venturi tube having a region of reduced cross-sectional area and a region of expanded cross-sectional area is arranged, and drinking water is supplied from piping C4 to the Venturi tube by pump P3. When the drinking water supplied to the Venturi tube passes through the reduced region, the rapid pressure reduction causes the gas dissolved in the drinking water to expand and create bubbles, and the subsequent rapid pressure recovery causes the bubbles to pulverize into fine particles, generating ultrafine bubbles. Although not specifically described, the ultrafine bubble generator UFB may also be of the swirling liquid flow type, pressurized dissolution type, or static mixer type.

[0044] Ultrafine bubbles exhibit sterilization effects against substances and fine particles contained in semi-drinking water. Although semi-drinking water has already had organic matter and other aggregates removed through a filtration process using rock extract, the ultrafine bubbles sterilize bacteria, such as those causing contamination, that could not be completely removed by the FL2 aggregate filter.

[0045] Drinking water that has passed through the ultrafine bubble generator (UFB) is sterilized and can be used for drinking or cooking.

[0046] <Water filtration method> Next, the water filtration method of the water filtration system will be explained using the flowcharts in Figures 3 and 4. As shown in Figure 2, the controller CON is connected to each pump (P1, P2, P3), each sensor (us, ls), each valve (V1, V2, V3), and the mineral supply device MDI so that it can send and receive signals. Power is supplied from the lithium-ion battery BT to power the controller CON, each pump, valve, etc. The controller CON is also configured to receive requests for supplying / stopping drinking water from a terminal not shown.

[0047] As shown in Figure 3, when the controller CON receives a request for drinking water supply (S20), it determines whether or not there is quasi-drinking water to supply to the secondary tank 30. In other words, it determines whether a signal indicating that the lower limit sensor ls of the secondary tank 30 has detected the lower limit has been sent to the controller CON. If no signal indicating the lower limit has been sent (S21 NO), the process proceeds to step S34; if a signal indicating the lower limit has been sent (S21 YES), the process proceeds to step S22.

[0048] It is determined whether the lower limit sensor ls of the primary tank 20A has detected the lower limit. If the lower limit is detected, the signal is sent to the controller CON (S22 YES), and the process proceeds to step S23. If the lower limit is not detected, the signal is sent to the controller CON (S22 NO), and the process proceeds to step S27.

[0049] Controller CON sends a signal to valve V1 to open valve V1 and also sends an operation signal to pump P1 (S23). As a result, non-drinking water is sent from non-drinking water tank 10 to primary tank 20A via non-drinking water piping C1. At this time, any debris contained in the non-drinking water is filtered out by the debris filter FL1.

[0050] When non-drinking water flows through the non-drinking water piping C1, the flow meter FM measures the flow rate of the non-drinking water and transmits this value to the controller CON. The controller CON then instructs the mineral supply device MDI to supply rock extract (S24). This supply instruction is such that the rock extract is diluted 5,000 to 10,000 times with respect to the non-drinking water. In other words, the rock extract is in a ratio of 0.01% to 0.02% by volume relative to the non-drinking water.

[0051] The primary tank 20A is gradually filled with non-drinking water to which rock extract has been supplied. If the upper limit sensor us of the primary tank 20A does not detect the upper limit (S25 NO), the supply of non-drinking water continues. If the upper limit sensor us of the primary tank 20A detects the upper limit (S25 YES), the signal is sent to the controller CON, which sends a signal to valve V1 to close valve V1 and also sends a signal to stop pump P1 (S26).

[0052] Next, the process moves to filtering the aggregates using rock extract. Controller CON transmits signals to open valve V2 and close valve V3, as well as a signal to operate pump P2 (S27). The non-drinking water stored in primary tank 20A contains aggregates, but by circulating it through the aggregate filter FL2, it is gradually converted into semi-drinking water (S28). The circulation time varies depending on the capacity of primary tank 20A, the capacity of pump P2, etc. For example, the circulation time is about 20 minutes to 1 hour. The circulation time is pre-set in controller CON.

[0053] If the predetermined circulation time has not elapsed (S29 NO), the non-drinking water will continue to circulate. If the predetermined circulation time has elapsed (S29 YES), the controller CON will send a signal to close valve V2 and a signal to stop pump P2 (S30).

[0054] Next, we move on to the process of sterilizing bacteria using ultrafine bubbles. First, controller CON sends a signal to open valve V3 and activates pump P2 (S31). This causes semi-drinking water to be stored in secondary tank 30. Semi-drinking water continues to be stored in secondary tank 30 until the upper limit sensor us of the secondary tank detects the upper limit (S32 NO). When the upper limit sensor us of the secondary tank detects the upper limit (S32 YES), the upper limit signal is sent to controller CON.

[0055] The controller CON sends a signal to close valve V3 and a signal to stop pump P2 because the secondary tank 30 has been filled to its upper limit with semi-drinking water (S33).

[0056] Next, the controller CON sends a signal to activate the ultrafine bubble generator UFB and pump P3 in order to kill bacteria with ultrafine bubbles (S34). If the lower limit sensor ls of the secondary tank 30 has not detected the lower limit (S35 NO), the process proceeds to step S34. If a signal has been sent indicating that the lower limit sensor ls of the secondary tank 30 has detected the lower limit (S35 YES), the process proceeds to step S36.

[0057] The controller CON transmits a signal to stop the ultrafine bubble generator UFB and pump P3 because the amount of semi-drinking water in the secondary tank 30 has fallen to the lower limit (S36). Also, even if the lower limit sensor ls of the secondary tank 30 has not detected the lower limit, if the controller CON receives a request to stop the drinking water supply (S37), it transmits a signal to stop the ultrafine bubble generator UFB and pump P3 (S36).

[0058] <Configuration of a second example of a water filtration system> Figure 5 is a conceptual diagram showing the water filtration device 50B according to the second example. Components identical to those in the first example are denoted by the same reference numerals. Detailed explanations of identical components have been omitted.

[0059] <Rock extract supply process 2> The non-drinking water tank 10, like the non-drinking water tank in the first example, is a tank for storing wastewater from the bathroom, lake water, etc. A non-drinking water pipe C1 is connected to the bottom of the non-drinking water tank 10, and an electromagnetic valve V1 for opening and closing the non-drinking water pipe C1 and a pump P1 for sending non-drinking water downstream are connected to the non-drinking water pipe C1. In the second example, the pump P1 applies pressure from the non-drinking water tank 10 to the ultrafine bubble generator UFB. Furthermore, a debris filter FL1 is placed in the non-drinking water pipe C1.

[0060] In the non-drinking water piping C1, a mineral supply device MDI, such as a flow-proportional injector, is located downstream of the waste filter FL1. The mineral supply device MDI in the second example has a tank for storing a rock extract (not shown) and supplies the rock extract to the non-drinking water based on the flow rate.

[0061] <Filtration process 2 of aggregates using rock extract> The non-drinking water supplied with the rock extract is stored in primary tank 20B and thoroughly mixed in primary tank 20B. In other words, the rock extract and non-drinking water are mixed in primary tank 20B at a slow flow rate.

[0062] Unlike the primary tank 20A in the first example, the primary tank 20B in the second example does not have an upper limit sensor us and a lower limit sensor ls. Instead, a booster pump P1 may be installed. The booster pump can control the water supply by sensing a decrease in water pressure in the piping, activating the pump, and stopping the pump when the water pressure reaches a predetermined pressure. Alternatively, a ball tap may be installed in the primary tank 20B instead of the upper limit sensor us and the lower limit sensor ls. The ball tap is a device that automatically adjusts the water level in the primary tank 20B, and can control the water supply by opening and closing a lever using the buoyancy of a floating ball. Furthermore, the primary tank 20B in the second example has a structure in which the amount of water supplied and the amount of water discharged are approximately the same, and has a function to circulate non-drinking water stored in the primary tank 20B for a predetermined time.

[0063] The coagulation filter FL12 filters out the coagulation generated in the primary tank 20B. Preferably, the coagulation filter FL12 has a mesh size of, for example, 1000-3500 (filtration particle size approximately 40 μm-2 μm). The water that passes through the coagulation filter FL12 is converted into quasi-drinking water free of coagulation. In the first example, the coagulation filter FL2 is, for example, a sand filter, while in the second example, the coagulation filter FL12 uses, for example, a hollow fiber membrane filter. The coagulation filter FL12 in the second example is equipped with a valve V12 for discharging coagulation and a valve V13 for releasing quasi-drinking water downstream. Normally, valve V12 is closed and valve V13 is open.

[0064] When aggregates begin to accumulate in the hollow fiber membrane filter FL12 in the second example, the controller CON opens valve V12 and closes valve V13, discharging the aggregates along with non-drinking water into the discharge container D12.

[0065] Pre-drinking water is water that is safe for human consumption, from which unwanted organic matter and other aggregates have been removed. For this reason, the pre-drinking water may be sent to the heater 60 via piping C5 without going through the filtration process for aggregates using ultrafine bubbles (see piping C5, shown as a dotted line in Figure 5). The process of sterilizing bacteria using ultrafine bubbles is the same as in the first example, so we will omit the explanation. [Explanation of Symbols]

[0066] 10... Non-drinking water tank, 20A, 20B... Primary tank, 30... Secondary tank 50A,50B … Water filtration device, 60 … Heater 70... Temporary bathroom, 72... Faucet, 74... Bathtub, 76... Shower 100... Temporary water purification bath equipment BT… Lithium-ion battery CON… Controller, C8… Drainage piping (flow path) UFB… Ultrafine bubble generator FL1… Dust filter (first filter), FL2, FL12… Aggregate filter (second filter) FL3… Aggregate filter (third filter) FM...Flowmeter MDI… Mineral supply device P1, P2, P3… Pumps V1, V2, V3, V12, V13… Solenoid valves us… Upper limit sensor, ls… Lower limit sensor

Claims

1. A temporary bathroom equipped with a bathtub or shower, A non-drinking water tank for storing non-drinking water, including the drainage from the bathtub or shower, A drainage channel for introducing the drainage from the bathtub or shower into the non-drinking water tank, A first filter that filters out debris contained in non-drinking water from a non-drinking water tank, A mineral supply device that supplies a rock extract containing sulfur, iron, aluminum, magnesium, and potassium obtained from rocks to the filtered non-drinking water, A primary tank for storing non-drinking water supplied with the aforementioned rock extract, A second filter filters out the aggregates that have aggregated in the non-drinking water due to the addition of the rock extract to the primary tank, converting it into semi-drinking water. A heater for heating the semi-drinking water filtered by the second filter, A supply channel for supplying semi-drinking water heated by the heater to the bathtub or shower, A temporary water purification bath facility equipped with [a specific feature].

2. A temporary bathroom equipped with a bathtub or shower, A non-drinking water tank for storing non-drinking water, including the drainage from the bathtub or shower, A drainage channel for introducing the drainage from the bathtub or shower into the non-drinking water tank, A first filter that filters out debris contained in non-drinking water from a non-drinking water tank, A mineral supply device that supplies a rock extract containing sulfur, iron, aluminum, magnesium, and potassium obtained from rocks to the filtered non-drinking water, A primary tank for storing non-drinking water supplied with the aforementioned rock extract, A second filter filters out the aggregates that have aggregated in the non-drinking water due to the addition of the rock extract to the primary tank, converting it into semi-drinking water. A bubble supply device that supplies ultrafine bubbles to the semi-drinking water filtered by the second filter, A heater for heating the drinking water that has passed through the bubble supply device, A supply channel for supplying drinking water heated by the heater to the bathtub or shower, A temporary water purification bath facility equipped with [a specific feature].

3. A flow path between the primary tank and the second filter circulates the non-drinking water for a predetermined time to convert it into semi-drinking water, A secondary tank for storing the aforementioned semi-drinking water, A temporary water purification bath facility according to claim 1 or claim 2, comprising:

4. The primary tank includes an upper limit sensor for detecting the upper limit of the non-drinking water to be stored, and a lower limit sensor for detecting the lower limit of the non-drinking water to be stored. Based on the detection of the upper limit by the upper limit sensor, the supply of the filtered non-drinking water is stopped. Based on the lower limit detection of the lower limit sensor, the supply of the filtered non-drinking water is started. A temporary water purification bathing system according to claim 1 or claim 2.

5. The secondary tank includes an upper limit sensor for detecting the upper limit of the storage of the semi-drinking water and a lower limit sensor for detecting the lower limit of the storage of the semi-drinking water. Based on the detection of the upper limit by the upper limit sensor, the supply of the semi-drinking water is stopped. Based on the lower limit detection by the lower limit sensor, the supply of drinking water is stopped. The temporary water purification bath equipment according to claim 2.

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