Toilet system and sewage treatment method

Abstract

This invention provides an aerobic fermentation toilet system and control method that can handle the increased volume of urine introduced due to the increased number of users during peak tourist seasons. [Solution] The system includes one or more fermentation tanks 10 that receive a carbon source and human waste inoculated with aerobic fermentation microorganisms, stir them, and ferment them to compost; a human waste separator 20 provided above each fermentation tank 10 that directly accepts feces from the human waste while capturing urine; a urine tank 30 that temporarily stores the urine captured by the human waste separator; and a urine pump P that sends the urine stored in the urine tank 30 into each of the fermentation tanks 10. The system is configured to control the amount of urine stored in the urine tank 30 that is sent into each of the fermentation tanks 10 so as not to exceed the processing capacity of the fermentation tank 10.

Description

Technical Field

[0001] The present invention relates to a toilet system and a control method for treating excrement and urine by utilizing the fermentation ability of aerobic microorganisms.

Background Art

[0002] Conventional toilets in mountain and sea tourist areas include a water scoop type and a flush type. In the case of the water scoop type, excrement and urine are treated by being discarded in the wild or in the sea. In the case of the flush type, after purification treatment at a sewage treatment plant, either discharge or direct discharge into the sea is carried out. The above purification treatment not only uses a large amount of water but also requires a lot of energy costs for purification. In addition, the water scoop type causes water pollution of rivers, lakes, and seawater due to excrement and urine.

[0003] In order to improve the problems of the above water scoop type toilet, attempts have been made to decompose excrement and urine by utilizing the natural purification action of aerobic microorganisms (fermenting bacteria). As a specific example of this, a mixture of excrement and urine, sawdust, crushed rice husks, peat moss, etc. is decomposed by aerobic microorganisms (fermenting bacteria), and water is evaporated by fermentation heat, etc., to reduce the volume of excrement and urine. On the other hand, by raising the temperature, Escherichia coli, parasites, etc. are killed and it is intended to be effectively used as compost (organic fertilizer).

[0004] For the normal operation of such a compost toilet (aerobic fermentation type toilet), it is important to satisfy the following elements. 1. Moisture management The proportion of moisture in the mixture of excrement and urine and sawdust is 60% or less. 2. Temperature management The temperature of the mixture of excrement and urine and sawdust is preferably 30°C or higher. 3. C / N balance adjustment Keep the ratio of the carbon content of sawdust to the nitrogen content of excrement and urine appropriate. For this purpose, appropriate supply of sawdust and recovery of compost are required. 4. Air supply The mixture of human waste and sawdust should be thoroughly stirred to allow oxygen from the air to circulate. 5. Ventilation of the fermentation tank The process involves exhausting the water evaporated by the heat generated to dry the mixture.

[0005] From this perspective, the apparatus of Patent Document 1 sets crushed rice husks and aerobic fermentation bacteria together, and provides a sewage inlet, a sewage (compost) outlet after processing, and a sewage storage tank equipped with a turning device (agitation device) inside, an air intake connected to a blower and an exhaust outlet connected to an exhaust fan, as well as a heater inside the sewage storage tank to control the sewage temperature to around 50°C.

[0006] Patent Document 2 discloses a compost toilet device in which a stirring claw and a water level gauge are installed in a stirring and fermentation chamber with an inlet for adding human waste and additives (such as peat moss), and the operation of the additive supply device is controlled by the signal from the water level gauge. Furthermore, the air supply pipe is connected to a blower to enable forced air supply. A heater is installed in this air supply pipe to control the air temperature in the range of 40 to 80°C.

[0007] The apparatus described in Patent Document 3 also involves filling a fermentation tank equipped with a stirring means with a substance (such as sawdust) that has a high organic carbon content and is inoculated with aerobic fermentation microorganisms. When human waste is added, the microorganisms decompose and eliminate the human waste, and the resulting heat energy is applied to the sawdust to compost it.

[0008] In the above-mentioned toilet systems, for example, during peak seasons in the summer, an increase in the number of people using the toilet leads to a larger amount of urine being fed into the fermentation tank, increasing the moisture content. This results in a decrease in fermentation capacity, making it impossible to adequately process human waste. Patent Document 4 addresses the problem of moisture content by providing a separate urinal and a urine tank to temporarily store the urine from the urinal, in order to prevent the concentration of urine input over time or to a specific fermentation tank. The urine from the urine tank is then controlled and supplied to each fermentation tank so as not to exceed the processing capacity of that tank. Specifically, every day, a fixed amount of urine (250 ml, the average adult urine volume) is pumped from the urine tank to each fermentation tank. In addition, taking into account the amount of urine directly added to each fermentation tank, the number of times the individual rooms where the fermentation tanks are installed is measured by a counter. When the sum of this usage count and the number of times urine is pumped in reaches a predetermined number calculated from the daily processing capacity, it is determined that the processing capacity has been reached, and the urine pumping stops while the doors of the individual rooms are automatically locked. This system ensures that even if the amount of urine input increases due to increased toilet usage during peak seasons such as summer, the amount of urine sent to each fermentation tank does not exceed its processing capacity, thereby suppressing an increase in the moisture content and maintaining fermentation processing capacity. [Prior art documents] [Patent Documents]

[0009] [Patent Document 1] Japanese Patent Publication No. 60-220198 [Patent Document 2] Japanese Patent Application Publication No. 60-241999 [Patent Document 3] Japanese Patent Publication No. 11-253353 [Patent Document 4] Patent No. 4684668 [Overview of the Initiative] [Problems that the invention aims to solve]

[0010] In the toilet system described in Patent Document 4, the amount of urine sent from the urinal to the fermentation tank via the urine tank is directly controlled, but the amount of urine directly poured from the toilet to the fermentation tank is indirectly controlled by the number of times the stall where the fermentation tank is installed is used. As a result, a discrepancy arises between the amount of urine estimated from the number of times the stall is used and the amount of urine actually poured from the toilet to the fermentation tank, and the problem of the moisture content in the fermentation tank increasing was not completely solved. Therefore, there was room for improvement in the toilet utilization rate during peak tourist seasons.

[0011] The present invention has been made in view of the above problems, and an object thereof is to provide a compost toilet (aerobic fermentation type toilet) system and a control method capable of being processed even when the amount of urine input increases due to an increase in the number of users during the peak of the tourist season.

Means for Solving the Problems

[0012] In order to solve the above problems, the toilet system of the present invention has one or more fermentation tanks that form a closed space, have stirring means, receive and stir a carbon source planted with aerobic fermentation microorganisms and excrement and urine, and ferment them into compost, a feces-urine separation toilet bowl provided on each of the fermentation tanks, having a feces passage hole and a urine capture part, directly introducing feces among the excrement and urine input into the fermentation tank, and capturing urine, a urine tank that temporarily stores the urine captured by the feces-urine separation toilet bowl, and a urine feed pump that feeds the urine stored in the urine tank into each of the fermentation tanks, and is characterized in that the urine stored in the urine tank is configured to be fed into each of the fermentation tanks while being controlled to an amount that does not exceed the processing capacity of the fermentation tank.

[0013] According to this configuration, direct input of urine into each fermentation tank can be prevented, and urine can be fed into each fermentation tank while being controlled to an amount that does not exceed the processing capacity of the fermentation tank. Therefore, even when the amount of urine input increases due to an increase in the number of users during the peak of the tourist season, a compost toilet (aerobic fermentation type toilet) system capable of being processed can be provided.

[0014] The toilet system may further include one or more urinals, and the urine from the urinals is temporarily stored in the urine tank together with the urine separated by the feces-urine separation toilet bowl, and the urine stored in the urine tank is configured to be fed into each of the fermentation tanks while being controlled to an amount that does not exceed the processing capacity of the fermentation tank.

[0015] [[ID=?]] According to this configuration, urine input into the urinals can also be fed into each fermentation tank while being controlled to an amount that does not exceed the processing capacity of the fermentation tank.

[0016] The toilet system further includes heating means for heating each of the fermentation tanks and a temperature sensor for measuring the temperature inside the fermentation tank. When the temperature detected by the temperature sensor is outside a predetermined range, a warning display may be performed and the supply of urine to the fermentation tank may be stopped.

[0017] According to this configuration, when the temperature inside each fermentation tank is outside the predetermined range, by stopping the supply of urine to this fermentation tank, it is possible to prevent the fermentation process under inappropriate temperature conditions in each fermentation tank. Further, if the temperature is restored by taking measures such as replacing a part of the compost in response to the warning display, the process can be restarted.

[0018] The toilet system further includes an exhaust fan attached to each of the fermentation tanks for exhausting the air inside the fermentation tank and an exhaust fan sensor for measuring the wind speed of the exhaust fan. When the wind speed detected by the exhaust fan sensor is outside a predetermined range, a warning display may be performed and the supply of urine to the fermentation tank may be stopped.

[0019] According to this configuration, when the wind speed of the exhaust fan of each fermentation tank is outside the predetermined range, by stopping the supply of urine to this fermentation tank, it is possible to prevent the fermentation process with excessive moisture in each fermentation tank. Further, if the wind speed is restored by taking measures such as repairing the exhaust fan in response to the warning display, the process can be restarted.

[0020] The toilet system further includes an outside air temperature sensor for measuring the outside air temperature of the fermentation tank and an exhaust volume changing means for changing the exhaust volume by the exhaust fan, and may be configured to change the exhaust volume according to the outside air temperature.

[0021] According to this configuration, when the outside air temperature is high, the exhaust volume is increased to achieve efficient drying inside the fermentation tank, and when the outside air temperature is low, the exhaust volume is decreased to prevent a decrease in the temperature inside the fermentation tank due to the inflow of outside air, thereby enhancing the processing capacity of the fermentation tank.

[0022] The stirring means may include a stirring screw that is rotatably mounted inside the fermentation tank, has a first helical blade having one winding direction formed on one axial end of the central axis, and a second helical blade having another winding direction formed on the other axial end, and the stirring screw may be configured to reverse at predetermined intervals.

[0023] With this configuration, when the stirring screw is rotated in one direction, the mixture of carbon source and human waste in the fermenter is stirred so that it gathers together in the axial direction, and when the stirring screw is rotated in the other direction, the mixture is stirred so that it separates in the axial direction, allowing air to circulate and promoting good fermentation.

[0024] The present invention relates to a method for treating human waste, which involves fermenting human waste together with a carbon source using the aforementioned toilet system to produce compost. The steps include: initially introducing a carbon source into each of the aforementioned fermentation tanks and inoculating aerobic fermentation microorganisms; The steps include: introducing feces into the fermentation tank through the aforementioned fecal-urine-separating toilet and storing urine in the aforementioned urine tank; The process involves daily supplying urine from the urine tank to each fermentation tank in fixed amounts, with predetermined rest periods in between, and not exceeding a predetermined number of times calculated from the daily processing capacity of the fermentation tank, while stirring. It is characterized by including.

[0025] This configuration prevents direct injection of urine into each fermentation tank, allowing for controlled injection of urine into each tank in an amount that does not exceed its processing capacity. This ensures that even when the amount of urine injected increases due to the rise in the number of users during peak tourist seasons, processing becomes possible. Furthermore, by repeatedly injecting urine into each fermentation tank with predetermined rest periods and stirring, homogeneous mixing of carbon sources and urine, as well as oxygen supply, can be ensured.

[0026] In the aforementioned sewage treatment method, each fermentation tank may be provided with a urine acceptance period during which it can accept urine and a urine acceptance stop period during which it stops accepting urine, and the step of supplying the urine to the fermentation tank may be stopped during the urine acceptance stop period.

[0027] This configuration allows for a period of time during which urine receiving is stopped, thereby restoring the processing capacity of each fermentation tank. [Effects of the Invention]

[0028] According to the toilet system and control method of the present invention, a sewage separation toilet is provided on each fermentation tank to prevent direct injection of urine into each fermentation tank. The system captures the urine from the injected sewage and temporarily stores it in a urine tank. The stored urine is then sent into each fermentation tank in an amount that does not exceed the processing capacity of that fermentation tank. Therefore, even if the amount of urine injected increases due to the increase in the number of users during peak tourist seasons, a compost toilet (aerobic fermentation toilet) system capable of processing is provided. [Brief explanation of the drawing]

[0029] [Figure 1] This is a diagram showing the configuration of a toilet system according to the first embodiment of the present invention. [Figure 2] Figure 1 is a longitudinal cross-sectional view of a fermentation tank used in a toilet system. [Figure 3] Figure 2 is a partial cross-sectional view of the fermentation tank. [Figure 4] Figure 1 shows a sewage-separating toilet used in the toilet system, with (a) being a plan view and (b) being a longitudinal cross-sectional view. [Figure 5] Figure 1 is a flowchart illustrating the overview of the toilet system's operation, where (a) shows the operation of the system control device and (b) shows the operation of the control unit 62A. [Figure 6] Figure 1 is a sequence diagram of the system control device for the toilet system. [Figure 7] Figure 1 is a sequence diagram of the control unit 62A of the toilet system. [Figure 8A] Figure 1 is a sequence diagram showing the agitation motor control circuit of the toilet system. [Figure 8B] Figure 1 is a sequence diagram showing the damper control circuit of the toilet system. [Figure 9]This is a diagram showing the configuration of a urine treatment system according to a second embodiment of the present invention. [Figure 10] Figure 9 is a flowchart illustrating the operation of the toilet system. [Figure 11] This flowchart shows an overview of the operation of a toilet system according to a third embodiment of the present invention, where (a) shows the operation of the system control device and (b) shows the operation of the control unit 62A. [Figure 12] Figure 11 is a sequence diagram of the control unit 62A of the toilet system. [Figure 13] Figure 1 shows the relationship between exhaust air velocity, outside air temperature, and treatment capacity in the toilet system. [Modes for carrying out the invention]

[0030] Embodiments of the present invention will be described in detail below with reference to the attached drawings. (First Embodiment) Figure 1 is a diagram showing the configuration of a toilet system 100 according to the first embodiment of the present invention. This toilet system 100 includes a fermentation tank (also called a septic tank) 10, a sewage separation toilet 20, a urine tank 30, a urine supply pump P, a solenoid valve V, a urinal 50, and a control unit 60.

[0031] As shown in Figures 2 and 3, the fermentation tank 10 forms a closed space and has a stirring device (stirring means) 110, and is a device that receives carbon source and human waste inoculated with aerobic fermentation microorganisms, stirs them, and ferments them to produce compost. Figure 2 is a vertical cross-sectional view of the fermentation tank 10, and Figure 3 is a partial horizontal cross-sectional view of the fermentation tank 10. In this embodiment, the fermentation tank 10 includes a fermentation tank body 11, a stirring device 110, a heating means 120, a temperature sensor 125, a chimney (exhaust means) 130, an exhaust fan sensor 133, and a warning light 140. The fermentation tank 10 in this embodiment is a Cosmo Ace U-50 model manufactured by Cosmo Ace Industries Co., Ltd., with a processing capacity of 25 liters / day per unit at a normal temperature of 25°C. The number of fermentation tanks 10 installed is arbitrary, but in this embodiment, four are installed. The processing capacity of each fermentation tank 10 may be the same or different. Each fermentation tank 10 is located under the floor of each toilet stall. The four individual fermentation tanks 10 are also referred to as fermentation tanks 10A to 10D (see Figure 1).

[0032] The fermentation tank body 11 is a roughly box-shaped container, with the lower half of the interior having a roughly semicircular cross-section to match the shape of the stirring screw 111 of the stirring device 110 described later, and the interior as a whole having a roughly U-shaped cross-section. The top surface is covered by a top lid 12 and has a toilet mounting opening 12a, a urinal mounting opening 12b, and an exhaust opening 12c. The effective capacity of the fermentation tank body 11 is, for example, 500 liters. A sewage-separating toilet 20, described later, is installed at the toilet mounting opening 12a, but a urinal 50 is not installed at the urinal mounting opening 12b. Instead, piping for supplying urine from the urine tank 30, described later, is connected to it.

[0033] The stirring device (stirring means) 110 includes a stirring screw 111, a stirring motor with a reduction gear 112, a motor bracket 113, a small sprocket 114, a large sprocket 115, a chain 116, and a chain guide (not shown). The stirring screw 111 is rotatably mounted inside the fermentation tank body 11, with both ends of its central shaft 111c supported by bearings 11a and 11b provided in through holes in the side walls of both ends of the fermentation tank body 11. A first helical blade 111a with one winding direction is formed on one axial end of the central shaft 111c, and a second helical blade 111b with another winding direction is formed on the other axial end. Therefore, when the stirring screw 111 is rotated in one direction, the mixture of carbon sources and human waste in the fermentation tank 10 is stirred so that it gathers together in the axial direction, and when the stirring screw 111 is rotated in the other direction, the mixture is stirred so that it separates in the axial direction, thereby achieving good stirring. One end of the central shaft 111c of the stirring screw 111 protrudes outside the fermentation tank body 11, and a large sprocket 115 is attached to it. On the other hand, a stirring motor 112 with a reduction gear is attached to the upper part of the fermentation tank body 11 via a motor bracket 113, and a small sprocket 114 is attached to its output shaft. A chain 116 is stretched between the large sprocket 115 and the small sprocket 114, and is configured to transmit the rotational driving force of the stirring motor 112 to rotate the stirring screw 111. A chain guide (not shown) is also provided to cover the chain 116 to ensure safety.

[0034] The heating means 120 is provided along the inner surface from the bottom to the side of the fermentation tank body 11 in each fermentation tank 10 and consists of an electric rubber heater that heats the mixture of carbon source and human waste. This heating means 120 maintains the temperature of the mixture of carbon source and human waste at 30-50°C, which is suitable for fermentation.

[0035] The temperature sensor 125 is a sensor that measures the temperature inside the fermentation tank. This temperature sensor 125 can be a known type, such as a thermocouple sensor. In this embodiment, the temperature sensor 125 is installed in the upper space inside the fermentation tank 10. This temperature sensor 125 is used to determine whether the temperature inside the fermentation tank 10 is appropriate.

[0036] The chimney 130 is an exhaust mechanism attached to the fermentation tank 10. This chimney 130 includes an exhaust fan 131, a deodorizing filter 132, an exhaust fan sensor 133, and a damper (exhaust volume changing mechanism) 135, all located within the exhaust passage. An outside air temperature sensor 134 is also provided on the outside of the chimney 130. This chimney 130 is attached to the exhaust port 12c of the top lid 12 of the fermentation tank 10. Any known fan can be used as the exhaust fan 131, and in this embodiment, a propeller fan is employed. The deodorizing filter 132 can be any known deodorizing filter that can remove the odor of urine, but a titanium dioxide photocatalytic type is preferred because it can be used for a long period of time.

[0037] The exhaust fan sensor 133 is a sensor that measures the wind speed of the exhaust fan 131, and in this embodiment, it is installed inside the chimney (130). The exhaust fan sensor 133 detects abnormalities in the wind speed of the exhaust fan 131. This exhaust fan sensor 133 can be a known type, such as a hot-wire anemometer.

[0038] The outside air temperature sensor 134 is a sensor that measures the outside air temperature of the fermentation tank 10. A known temperature sensor can be used, and in this embodiment, a thermostat is employed. The damper (exhaust volume changing means) 135 is a device that changes the exhaust volume by the exhaust fan 131. In this embodiment, as shown in Figure 8B, a damper 135 whose angle can be changed by a DC motor 136 is employed. Note that the exhaust volume changing means of the present invention is not limited to the damper 135; for example, a means for changing the rotational speed of the drive motor (not shown) of the exhaust fan 131 may be used. In this embodiment, when the outside temperature is high, the damper 135 is opened to increase the exhaust volume, thereby achieving efficient drying inside the fermentation tank. On the other hand, when the outside temperature is low, the damper 135 is closed to reduce the exhaust volume and prevent a drop in the temperature inside the fermentation tank due to the inflow of outside air. This increases the processing capacity of the fermentation tank. Figure 13 is a diagram showing the relationship between exhaust air velocity, outside air temperature, and processing capacity in the toilet system 100 of this embodiment. As shown in this figure, when the outside air temperature is approximately 20°C or lower, the exhaust volume is 0.2 m³. 3 / min, when the ambient temperature is approximately 20°C or higher, the exhaust volume is 2.0m³ 3 The highest processing capacity is achieved when the output is / min. In this embodiment, considering power consumption, the exhaust volume is 0.2m³ when the ambient temperature is 25°C or lower. 3 / min, when the ambient temperature is 25℃ or higher, the exhaust volume is 1.2m³ 3 It is set to / min.

[0039] The warning lights 140 are LED lamps or the like installed in a visible location on the fermentation tank 10 and include a warning light L1 indicating excessive urine inflow (completion of a predetermined number of inflows), a warning light L2 indicating a temperature abnormality detected by the temperature sensor 125, and a warning light L3 indicating an exhaust fan abnormality detected by the exhaust fan sensor 133.

[0040] The sewage-separating toilet 20 is installed on each fermentation tank 10 and is a device that directly accepts feces into the fermentation tank 10 while capturing urine. The sewage-separating toilet 20 is attached to the toilet mounting opening 12a of the upper lid 12 of the fermentation tank 10. As shown in Figure 4, the sewage-separating toilet 20 has a feces passage hole 21 and a funnel-shaped urine capture section 22. The sewage-separating toilet 20 accepts feces directly into the fermentation tank 10 through the feces passage hole 21, while capturing urine in the urine capture section 22 and introducing it into the urine tank 30 via piping connected to the urine capture section 22 (see Figure 1). In this embodiment, the position of the urine tank 30 is lower than the urine capture section 22 so that urine flows into the urine tank 30 naturally. However, the configuration is not limited to this, and the position of the urine tank 30 may be higher than the urine capture section 22, and urine may be pumped into the urine tank 30.

[0041] As shown in Figure 1, the urine tank 30 is a device that temporarily stores the urine captured by the urine capture unit 22. The size of the urine tank 30 is arbitrary, but in this embodiment, the capacity of the urine tank 30 is set to 500 liters. The urine tank 30 is equipped with a level meter FL, and when the urine tank 30 becomes empty, this level meter FL detects it. The urine tank 30 is also fitted with a chimney 35 that has an exhaust fan 36 similar to the exhaust fan 131 of the fermentation tank 10, and a deodorizing filter 37 is provided in the exhaust passage of the chimney 35. The exhaust volume of the exhaust fan 36 is 1.0 m³ 3 It is set to / minutes.

[0042] The urine delivery pump P is a pump that delivers urine stored in the urine tank 30 into each fermentation tank 10, and is configured to deliver urine at a constant flow rate. A known quantitative transfer type urine delivery pump P is used. By turning the urine delivery pump P ON for a predetermined time (e.g., 40 seconds), a predetermined amount (e.g., 250 ml) of urine is delivered each time. After that, it is paused for a predetermined time (e.g., 60 seconds), and then urine is delivered again. This is repeated until the total amount delivered reaches the daily processing capacity of the fermentation tank 10 to which the urine is delivered (e.g., 50 to 100 times).

[0043] The solenoid valve V is a valve that switches which fermentation tank 10 the urine is sent to. The solenoid valve V is installed in the urinal mounting port 1c of each fermentation tank 10 and is controlled by the control unit 60, which will be described later, so that only the solenoid valve V of the fermentation tank 10 to which the urine is sent is opened. In the fermentation tank 10, where the urine is delivered, the solenoid valve V is opened and closed in accordance with the operation of the urine delivery pump P and the agitator 110.

[0044] The urinal 50 is provided separately from the fermentation tank 10, which is equipped with a urinal 20 for separating human waste, and receives urine. The received urine is introduced into the urine tank 30 via piping connected to the urinal 50. In this embodiment, the position of the urine tank 30 is lower than that of the urinal 50 so that urine flows into the urine tank 30 naturally. However, the configuration is not limited to this, and the position of the urine tank 30 may be higher than that of the urinal 50, and urine may be pumped into the urine tank 30. In this embodiment, there are four urinals 50, but any number is acceptable, or there may be none. If urinals 50 are not provided, urination is handled by the urine collection unit 22 of the sewage-separating toilet 20.

[0045] The control unit 60 controls the urine delivery pump P, solenoid valve V, agitator 110, etc., and in this embodiment, includes a system control device 61 and a control unit 62. The system control device 61 controls the entire system, including the selection of the fermentation tank 10 to which the urine is delivered and the control of the urine delivery pump P. On the other hand, the control unit 62 (also referred to as "control units 62A to 62D") is provided for each fermentation tank 10 (also referred to as "fermentation tanks 10A to 10D") and controls the operation of the solenoid valve V, agitator 110, etc. of each fermentation tank 10. The system control device 61 and each control unit 62 are each configured as a sequencer (PLC). The control unit 60 is configured to deliver the urine stored in the urine tank 30 into each fermentation tank 10 in an amount that does not exceed the processing capacity of the fermentation tank 10.

[0046] Next, the operation of the toilet system 100 of this embodiment, configured as described above, will be explained. (Toilet system operation overview) Figure 5 is a flowchart showing an overview of the operation of the toilet system 100, where (a) shows the operation of the system control device 61 and (b) shows the operation of the control unit 62A. Each symbol beginning with R represents the relays described in Figures 6 and 7. When the power is turned on, the system control device 61 selects, in order from the fermentation tank 10A (control unit 62A), the one in which the non-receiving relay (relay R6) is in the OFF standby state. When fermentation tank 10A is selected, and none of the following have occurred, the control unit 62A opens the solenoid valve V of fermentation tank 10A, activates the urine supply pump P, and activates the agitator 110 for a predetermined time t1 (e.g., 1-2 min). Then, for a predetermined time t2 (e.g., 1-2 min), the solenoid valve V is closed, the urine supply pump P is paused, and the agitator 110 is paused. This cycle of operation and pause is repeated. When any of the following occurs, the "relay R3 turns ON" (relay R4 turns ON), the "relay R6 cannot accept" relay turns ON, and the operation of the fermentation tank 10A (control unit 62A) ends. The relay R6 turns ON when the number of times the daily processing capacity of the fermentation tank 10 (e.g., 25L) is divided by the amount of material supplied per supply (e.g., 250ml) is completed (e.g., 100 times), a temperature anomaly occurs (relay R4 turns ON), or an exhaust fan anomaly occurs (relay R5 turns ON). The system control device 61 sequentially selects fermentation tanks 10B (control unit 62B) and beyond, and the same operation is performed in each fermentation tank 10. This series of operations is performed once a day.

[0047] (Details of the toilet system's operation) Figure 6 is a sequence diagram showing the operation of the system control device 61, Figure 7 is a sequence diagram showing the operation of the control unit 62A, Figure 8A is a sequence diagram showing the stirring motor control circuit, and Figure 8B is a sequence diagram showing the damper control circuit. In each diagram, relay contacts indicated by black circles open when the relay is ON and close when the relay is OFF. Relay contacts indicated by white circles close when the relay is ON and open when the relay is OFF. Also, the R and S at the rightmost or leftmost end of each diagram indicate that voltage is applied.

[0048] 1. First, press the power-on switch SS1 of the system control unit 61 (see Figure 6). 2. Here, in the control unit 62A (see Figure 7) corresponding to the fermentation tank 10A (see Figure 1), when relays R3 (completion of feeding cycle), R4 (temperature abnormality), and R5 (exhaust fan abnormality) are all OFF, the relay contacts R3, R4, and R5 are open in the R6 circuit, so the unacceptable relay R6 enters an OFF standby state. Then, the relay contact R6A of the RSA circuit in the system control device 61 (see Figure 6) closes, the relay RSA turns ON, and the fermentation tank 10A is selected as the destination for the urine. 3. When relay RSA is turned ON, all RSB contacts to RSD contacts in the RSB circuit to RSD circuit corresponding to control units 62B to 62D are opened, causing all relays RSB to RSD to turn OFF. For this reason, control unit 62A is used preferentially.

[0049] 4. When relay RSA is turned ON, the RSA contact of the T1-R1 circuit in control unit 62A (see Figure 7) closes, the urine delivery time timer T1 starts measuring time, and relay R1 is activated. When relay R1 is activated, the R1 contact of the M1-RM-VA circuit closes, causing the urine delivery pump control relay M1, the agitation motor relay RM, and the solenoid valve control relay VA to turn ON, respectively. 5. When the urine pump control relay M1 is turned ON, the RA contact of the system control device 61 (see Figure 6) closes, and the urine pump P operates. 6. When the solenoid valve control relay VA of the control unit 62A (see Figure 7) is turned ON, the solenoid valve V of the fermentation tank 20A is opened. Also, when the stirring motor relay RM is turned ON, stirring begins. Note that the rotation direction of the stirring screw 111 reverses at predetermined intervals during stirring, but this operation will be described later. Furthermore, when relay R1 is activated, the R1 contact of the CT circuit closes and 1 is added to the count of the counter CT.

[0050] 7. When the time t1 (e.g., 1-2 mins) set by the urine infusion time timer T1 (see Figure 7) has elapsed and the urine infusion time timer T1 turns ON, the T1 contact of the T2-R2 circuit closes, the urine infusion stop time timer T2 starts measuring time, and relay R2 turns ON. When relay R2 turns ON, the R2 contact of the T1-R1 circuit opens, so relay R1 turns OFF. When relay R1 turns OFF, the R1 contact of the M1-M2-VA circuit opens, causing relays M1, M2, and VA to turn OFF, stopping the urine infusion pump P and agitator motor 112, and closing the solenoid valve V. (Note that when relay R2 turns ON, the urine infusion time timer T1 also turns OFF and the T1 contact of the T2-R2 circuit opens, but because relay R2 is ON, the R2 contact is closed, so the ON state of relay R2 is maintained, and the time measurement of T2 continues.)

[0051] 8. When the time t2 (e.g., 1-2 mins) set by the urine infusion stop time timer T2 has elapsed and the urine infusion stop time timer T2 turns ON, the T2 contact of the T2-R2 circuit opens and relay R2 turns OFF. When relay R2 turns OFF, the R2 contact of the T1-R1 circuit closes, so relay R1 turns ON, and the R1 contact of the M1-M2-VA circuit closes, causing relays M1, M2, and VA to turn ON, restarting the operation of the urine infusion pump P and agitation motor 112, and opening the solenoid valve V. Also, the R1 contact of the CT circuit closes and 1 is added to the count of counter CT.

[0052] 9. In this manner, the operation of the urine inlet pump P and stirring motor 112 and the opening of the solenoid valve V are repeated during time t1 (e.g., 1-2 min), and the stopping of the urine inlet pump P and stirring motor 112 and the closing of the solenoid valve V are repeated during time t2 (e.g., 1-2 min). When the count of the counter CT reaches the number of times obtained by dividing the daily processing capacity of the fermentation tank 10 (e.g., 25 L) by the amount of urine delivered in one operating time (e.g., 250 ml) (e.g., 100 times), the relay R3 connected to the counter CT is turned ON. As a result, the R3 contact of the L1 circuit closes, the warning light L1 indicating excessive urine inflow (completion of a predetermined number of deliveries) lights up, and the R3 contact of the R6 circuit closes, turning on the relay R6. (Note that the times t1, t2 and the number of cycles are set for each fermentation tank 10 (control unit 62) and may differ among the fermentation tanks 10A to 10D that make up the toilet system 100.) 10. Even if the counter CT count does not reach the aforementioned number of times, if a temperature anomaly (relay R4 turns ON) occurs in the fermentation tank 10A, the temperature anomaly warning light L2 will illuminate, the R4 contact of the R6 circuit will close, and the rejection relay R6 will turn ON. Also, if an exhaust fan anomaly (relay R5 turns ON) occurs, the exhaust fan anomaly warning light L3 will illuminate, the R5 contact of the R6 circuit will close, and the rejection relay R6 will turn ON.

[0053] 11. When relay R6 is turned ON, the R2 contact in the T1-R1 circuit opens, so relay R1 turns OFF. When relay R1 turns OFF, the R1 contact in the M1-M2-VA circuit opens, causing relays M1, M2, and VA to turn OFF, stopping the urine supply pump P and the stirring motor 112, and closing the solenoid valve V. This ends the operation of the fermentation tank 10A.

[0054] 12. When relay R6 is turned ON, the R6A contact of the RSA circuit in the system control device 61 (see Figure 6) opens, so relay RSA turns OFF, and the selection of fermentation tank 10A is canceled. As a result, the RSA contacts of the RSB to RSD circuits corresponding to fermentation tanks 10B to 10D close. If the non-receivable relay R6 for fermentation tank B (see Figure 7) is OFF, the R6B contact of the RSB circuit in the system control device 61 is closed, so the RSB relay turns ON. As a result, fermentation tank 10B is selected as the urine insertion destination, and the same operation as for fermentation tank 10A is performed. Similarly, fermentation tanks 10C and 10D are selected in sequence, and the same operation is performed.

[0055] 13. During the above operation, if the urine tank 30 (see Figure 1) becomes empty, the level meter FL turns ON, and the relay contact RL of the P circuit of the system control device 61 (see Figure 6) turns OFF, causing the urine supply pump P to stop. 14. For fermentation tank 10, which has finished its operation after completing the number of feeding cycles (relay R3 turns ON, warning light L1 lights up), the counter CT count is reset by timer T3, which operates every 24 hours, so relay R3 returns to OFF after 24 hours. This is because the processing capacity of fermentation tank 10 is expected to recover after 24 hours. Therefore, after 24 hours, this fermentation tank 10 also returns to a standby state where it can resume processing. 15. For fermentation tank 10, which has terminated operation due to a temperature anomaly (relay R4 is ON, warning light L2 is lit), if the temperature recovers by taking measures such as replacing part of the compost, relay R4 will turn OFF, and the tank will return to a standby state where processing can be resumed. 16. For fermentation tank 10 that has terminated operation due to exhaust fan malfunction (relay R5 is ON, warning light L3 is lit), if the airflow speed is restored by repairing the exhaust fan 131 or other measures, relay R5 will turn OFF, and the tank will return to a standby state where processing can be resumed.

[0056] (Reversal motion of the stirring screw during stirring) Here, the rotation direction of the stirring motor 112 during stirring (during the operation of step 6 above) is switched between forward and reverse at predetermined intervals (40-60 sec), and the rotation direction of the stirring screw 111 is reversed. This is to ensure that air is evenly distributed to the mixture of carbon source and sewage in the fermentation tank. Specifically, when the stirring motor relay RM is turned ON, the RM contact of the motor control circuit shown in Figure 8A closes and power is supplied, and at the same time, the RM contact of the MT0-MR0 circuit of the control unit 62A shown in Figure 7 closes, the forward rotation timer MT0 starts measuring time, and the relay MR0 turns ON. As a result, in Figure 8A, the white circle side contacts of the MR0 contacts provided in the RE circuit and BK circuit respectively close and the black circle side contacts open, and the phase of the AC current flowing through the starting winding 112b connected between the RE circuit and BK circuit leads the phase of the AC current flowing through the main winding 112a of the stirring motor (AC motor) 112 connected between the GR circuit and WH circuit, causing the stirring motor 112 to rotate in the forward direction. When the time mt0 (for example, 40 seconds) set by the forward rotation timer MT0 (see Figure 7) has elapsed and the forward rotation timer MT0 is turned ON, the MT0 contact of the MT01-MR01 circuit closes, the reverse rotation timer MT01 starts measuring time, and relay MR01 turns ON, which opens the MR01 contact of the MT0-MR0 circuit and turns relay MR0 OFF. As a result, in Figure 8A, the white circle side contact of each MR0 contact provided in the RE circuit and BK circuit opens and the black circle side contact closes, and the phase of the AC current flowing through the starting winding 112b connected between the RE circuit and BK circuit lags behind the phase of the AC current flowing through the main winding 112a of the stirring motor (AC motor) 112 connected between the GR circuit and WH circuit, causing the stirring motor 112 to rotate in reverse. When the time mt01 (for example, 40 seconds) set by the reverse rotation timer MT01 (see Figure 7) has elapsed and the reverse rotation timer MT01 turns ON, the MT01 contact of the MT01-MR01 circuit opens, and relay MR01 turns OFF. As a result, the MR01 contact of the MT0-MR0 circuit closes, relay MR0 turns ON, and the stirring motor 112 starts rotating in the forward direction again. By repeating the above operation, the rotation direction of the stirring motor 112 is repeatedly reversed.

[0057] (Displacement volume change operation by damper) The operation of damper 135 to change the exhaust volume will also be briefly explained with reference to Figure 8B. The operation of damper 135 is independent of the urine injection and agitation operation described above. First, when the ambient temperature is low, the contacts of the ambient temperature sensor (thermostat) 134 open, relay R7 turns OFF, and the two R7 contacts of the DC motor 136 control circuit are closed on the side with the black circle and open on the side with the white circle. As a result, the A1-A2 circuit is formed, the DC motor 136 with a reduction gear rotates in the CW direction, and the angle of damper 135 also moves in the CW direction, that is, in the direction that narrows the exhaust passage of the chimney 130. When the angles of the DC motor 136 and damper 135 reach the CW side limit, the CW side limit switch LS1 turns ON, the LS1 contact of the A1 circuit opens, and the DC motor 136 stops. As a result, the angle of damper 135 is set to a predetermined angle that reduces the exhaust volume. On the other hand, when the outside temperature is high, the contacts of the outside temperature sensor (thermostat) 134 close, relay R7 turns ON, and the two R7 contacts of the DC motor 136 control circuit close on the side with the white circle and open on the side with the black circle. As a result, the B1-B2 circuit is formed, the DC motor 136 with a reduction gear rotates in the CCW direction, and the angle of the damper 135 also moves in the CCW direction, that is, in the direction that opens the exhaust passage of the chimney 130. When the angles of the DC motor 136 and damper 135 reach the CCW side limit, the CCW side limit switch LS2 turns ON, the LS2 contact of the B1 circuit opens, and the DC motor 136 stops. This sets the angle of the damper 135 to a predetermined angle that increases the exhaust volume.

[0058] (How this toilet system works) As a result of the above operation of this toilet system 100, the following effects occur in each fermentation tank 10. As preparation, 5,000 liters of sawdust are initially added to each of the 10 fermentation tanks. Assuming a moisture content of 10-15% and a specific gravity of 0.6, the weight of the sawdust will be 300 kg (measured value). This sawdust will serve as a source of carbon required by aerobic microorganisms to decompose human waste. Aerobic microorganisms (fermentation bacteria) will then be inoculated into this carbon source. When the human waste is introduced into the fermentation tank 10 and the stirring screw 111 of the stirring device 110 rotates, the human waste is mixed with the sawdust in the initial set.

[0059] The activity of microorganisms generates fermentation heat during the decomposition of human waste, causing the temperature inside the fermentation tank 10 to rise to 60°C to 70°C. This heat causes all the water in the human waste to evaporate. The evaporated water is exhausted through a chimney 130 equipped with an exhaust fan 131. Human waste is more than 95% water, and almost all of that water evaporates. The remaining approximately 5% of organic matter in the human waste is then decomposed by microorganisms. In this way, the human waste is completely decomposed and eliminated. On the other hand, the sawdust becomes compost. As the composting of the sawdust progresses, the carbon source becomes insufficient, so in order to maintain fermentation in the fermentation tank 10, approximately 18 liters of new sawdust are periodically added to each fermentation tank 10 (once every 4 to 6 months, depending on usage). At this point, remove the same amount of sawdust from the initial composted set through the opening. The removed compost is dry and odorless, and can be reused as high-quality compost.

[0060] According to this embodiment, direct injection of urine into each fermentation tank 10 is prevented, and the amount of urine injected into each fermentation tank 10 is controlled so as not to exceed the processing capacity of that tank. Therefore, even if the amount of urine injected increases due to the increase in the number of users during the peak tourist season, a compost toilet (aerobic fermentation toilet) system that can process the urine can be provided.

[0061] (Second embodiment) Figure 9 is a diagram showing the configuration of a toilet system 200 according to a second embodiment of the present invention. This toilet system 200 is a configuration of the toilet system 100 of the first embodiment in which the number of fermentation tanks 10 is reduced to one. In this toilet system 200, there is no need to select a fermentation tank 10 into which the urine is supplied, so the solenoid valve V is omitted, and the system control device 61 of the control unit 60 is omitted, with only the control unit 62 being used. In this embodiment, the number of urinals 50 installed is 2, but there can be any number, or it can be zero.

[0062] Figure 10 is a flowchart illustrating the operation of the toilet system 200. This operation is similar to the operation of the control unit 62A in the toilet system 100 of the first embodiment. In other words, when the power is turned on, if none of the following have occurred, the system enters standby mode: completion of the urine delivery cycle (relay R3 is ON), temperature abnormality (relay R4 is ON), or exhaust fan abnormality (relay R5 is ON). In this state, if the RS switch (RSA switch in Figure 7) is pressed manually, the control unit 62 activates the urine delivery pump P and the agitator 110 for a period of time t1. Then, for a period of time t2, the urine delivery pump P and the agitator 110 are deactivated. This cycle of activation and deactivation is repeated. When any of the following occurs, the acceptance restriction relay R6 turns ON, and the operation of the fermentation tank 10 (control unit 62) ends: completion of the predetermined number of feeding cycles (relay R3 turns ON), temperature abnormality (relay R4 turns ON), or exhaust fan abnormality (relay R5 turns ON).

[0063] The sequence diagram (not shown) of the control unit 62 of the toilet system 200 is the same as the sequence diagram of the control unit 62A of the first embodiment shown in Figure 7, but differs in the following respects: (1) There is no solenoid valve V, and therefore there is no relay VA for driving the solenoid valve V. (2) The relay M1 for driving the urine pump P drives the urine pump P directly without going through the relay RP of the system control device 61. (3) To start the system, the RSA switch of the control unit 62 is pressed, not the SS1 switch of the system control device 61. The details of the operation of the toilet system 200 are the same as those of the toilet system 100 of the first embodiment, except for these points.

[0064] According to this embodiment, even if there is only one fermentation tank 10, direct injection of urine into each fermentation tank 10 is prevented, and the amount of urine supplied to each fermentation tank 10 is controlled so as not to exceed the processing capacity of that tank 10. Therefore, although the processing capacity is smaller than that of the first embodiment, a compost toilet system can be provided with a simple configuration that can process an increased amount of urine.

[0065] (Third embodiment) This embodiment is a configuration in which a urine receiving time period t0 and a urine receiving stop time period t01 are further set in the toilet system 100 of the first embodiment. The device configuration of the toilet system 300 of this embodiment is the same as the device configuration of the first embodiment shown in Figures 1 to 3. Figure 11 is a flowchart outlining the operation of the toilet system 300 according to this embodiment. Each symbol beginning with R represents the relay described in Figures 6 and 12. In this flowchart, the elapsed time of urine acceptance t0 is added as a reason for termination of operation compared to the flowchart of the toilet system 100 of the first embodiment shown in Figure 6. If the operation terminates for this reason, and after the urine acceptance stop time period t01 has elapsed, the control unit 62 returns to a standby state and resumes urine acceptance when selected by the system control device 61.

[0066] Figure 12 is a sequence diagram of the control unit 62 for each fermentation tank 10. This sequence diagram is the same as the sequence diagram of the control unit 62 of the first embodiment shown in Figure 7, with the addition of the T0-R0 circuit and T01-R01 circuit on the left side. The sequence diagram of the system control device 61 in this embodiment is the same as in Figure 6, the sequence diagram showing the stirring motor control circuit is the same as in Figure 8A, and the sequence diagram showing the damper control circuit is the same as in Figure 8B.

[0067] The operation of this control unit 62 will be explained using the control unit 62A of fermentation tank A as an example. First, in the initial standby state, the timer T0 and relay R0 of the T0-R0 circuit, and the timer T01 and relay R01 of the T01-R01 circuit are all OFF, and the rejection relay R6 of the control unit 62A is OFF.

[0068] When the system control device 61 selects fermentation tank A (control unit 62A) as the urine receiving destination, the relay RSA (see Figure 6) of the system control device 61 turns ON. As a result, the RS contact of the T0-R0 circuit in control unit 62A closes, relay R0 turns ON, and the urine receiving time timer T0 starts measuring time. The time set by this urine receiving time timer T0 (for example, 5 to 10 minutes) becomes the urine receiving time t0.

[0069] During this urine receiving time period t0, relay R0 is turned ON, closing the R0 contact of the T1-R1 circuit, enabling operation similar to that of the first embodiment. That is, for a time t1 (e.g., 2-3 minutes) set by the urine delivery time timer T1, the urine delivery pump P, the agitator 110, and the solenoid valve V are opened, thereby delivering urine to the fermentation tank A and agitating it. During this agitation operation, the rotation direction of the agitator screw 111 is reversed every predetermined time (e.g., 40-60 seconds). After that, for a time t2 (e.g., 1-2 minutes) set by the urine delivery stop time timer T2, the urine delivery pump P and the agitator 110 stop, and the solenoid valve V is closed, stopping the delivery of urine to the fermentation tank A and agitation. This cycle of delivering urine to the fermentation tank A and agitating it for a time t1 (e.g., 2-3 minutes), and stopping the delivery of urine to the fermentation tank A and agitating it for a time t2 (e.g., 1-2 minutes) is repeated.

[0070] When the above-mentioned urine reception time period t0 (for example, 15 minutes) has elapsed, the urine reception time period timer T0 turns ON, and the T0 contact of the T01-R01 circuit closes, which turns on relay R01 and starts measuring time with the urine reception stop time period timer T01. On the other hand, the R01 contact of the T0-R0 circuit opens, so relay R0 and urine reception time period timer T0 turn OFF. The urine reception stop time period t01 becomes the time set by the urine reception stop time period timer T01 (for example, 4 to 6 hours).

[0071] During this urine reception stop time period t01, relay R01 turns ON, opening the R01 contact of the T0-R0 circuit and turning relay R0 OFF. As a result, the R0 contact of the T1-R1 circuit opens, and relay R1 remains OFF, so the R1 contact of the M1-RM-VA circuit remains open, and the delivery and stirring of urine to fermentation tank A is permanently stopped. Also, during this urine reception stop time period t01, when relay R01 turns ON, the R01 contact of the R6 circuit closes, turning relay R6 ON. As a result, the R6A contact of the RSA circuit of the system control device shown in Figure 6 opens, turning relay RSA OFF, and the selection of fermentation tank A as the urine delivery destination is canceled. Consequently, the RS contact of the T0-R0 circuit in control unit 62A opens.

[0072] When the urine reception stop time period t01 (for example, 4 to 6 hours) has elapsed, the urine reception stop time period timer T01 turns ON, and the T01 contact of the T01-R01 circuit opens, causing the urine reception stop time period timer T01 and relay R01 to turn OFF. As a result, the control unit 62A returns to the standby state described above (timers T0, T01, relays R0 and R01 are all OFF). Also, since relay R01 turns OFF, the R01 contact of the R6 circuit opens, and if the other relay contacts R3, R4, and R5 are open, the unacceptable relay R6 turns OFF. As a result, when the system control device 61 selects fermentation tank A as the urine delivery destination, it becomes possible to operate again in the same manner as in the first embodiment.

[0073] Although embodiments of the present invention have been described above, the present invention is not limited to the embodiments described above. Those skilled in the art can make various additions and modifications within the scope of the present invention. For example, in the toilet systems 100 and 200 of the above embodiments, a system control device 61 consisting of a sequencer (PLC) or a control unit 62 was used as the control unit 60. However, the toilet system of the present invention is not limited to this, and for example, a system control device or control unit using a microcontroller may also be used.

[0074] Furthermore, the stirring means (stirring device 110), heating means 120, and exhaust means (chimney 130) are not limited to the configurations of the above embodiments, and any configuration is acceptable as long as it can achieve its respective purpose. Also, the exhaust volume changing means (damper 135) that changes the exhaust volume according to the outside air temperature is not essential, and depending on the operating conditions, a manual changing mechanism may be used or it may not be provided at all.

[0075] Furthermore, in the toilet systems 100 and 200 of the above embodiments, the stirring device 110 was operated in conjunction with the operation of the urine supply pump P, and the solenoid valve V was opened and closed. However, the toilet system of the present invention is not limited to this, and for example, the timing of the operation of the stirring device 110 and the operation of the urine supply pump P may be staggered, and the solenoid valve V may be kept open while the corresponding fermentation tank 10 is selected. [Industrial applicability]

[0076] The toilet system of this invention can be used in areas without adequate water and sewage systems, such as tourist destinations, and can be utilized in the housing equipment industry. [Explanation of symbols]

[0077] 10, 10A~10D Fermentation tanks 11 Fermentation tank body 11a, 11b bearings 12 Top lid 12a Toilet bowl mounting opening 12b Urinal mounting opening 12c exhaust port 20 Human waste separation toilet 21 Fecal passage hole 22 Urine collection section 30 urine tank 35 Chimney 36 Exhaust fan 37 Deodorizing filter 50 urinal 60 Control Unit 61 System Control Unit 62, 62A~62D Control Units 100, 200, 300 toilet systems 110 Stirring device (stirring means) 111 Agitation Screw 111c center axis 111a First spiral feather 111b Second spiral feather 112 Stirring motor 112a Main winding 112b Starting winding 113 Motor bracket 114 Small Sprocket 115 Large Sprocket 116 Chain 116 120 Heating means 125 Temperature Sensor 130 Chimney (exhaust means) 131 Exhaust fan 132 Deodorizing filter 133 Exhaust fan sensor 134 Outdoor temperature sensor 135 Damper (Mechanism for changing engine displacement) 136 DC motor 140 Warning light CT counter HL level meter L1, L2, L3 warning light LS1 CW side limit switch LS2CCW side limit switch M1 Urine Injection Pump Control Relay P Urine infusion pump V Solenoid valve SS1 Power-on switch R3, R4, R5, R6, RP, RSA, RSB~RSB relay RM Stirring Motor Relay T0, T01, T1, T2, T3 Timer VA Solenoid Valve Control Relay

Claims

1. One or more fermentation tanks that form a closed space and have a stirring means, receive carbon sources and human waste inoculated with aerobic fermentation microorganisms, stir, and ferment to compost them, A toilet is provided on each of the fermentation tanks, having a feces passage hole and a urine capture section, which allows feces to be directly introduced into the fermentation tank while capturing the urine, A urine tank for temporarily storing the urine captured by the aforementioned sewage-separating toilet, The system includes a urine supply pump that delivers the urine stored in the urine tank into each of the fermentation tanks, A toilet system characterized by being configured to send urine stored in the urine tank into each of the fermentation tanks in an amount controlled so as not to exceed the processing capacity of the fermentation tank.

2. The toilet system according to claim 1, further comprising one or more urinals, wherein urine from the urinals is temporarily stored in the urine tank together with the urine separated in the sewage-separating toilet, and the urine stored in the urine tank is supplied to each of the fermentation tanks in an amount controlled so as not to exceed the processing capacity of the fermentation tank.

3. The toilet system according to claim 1, further comprising a heating means for heating the inside of each fermentation tank and a temperature sensor for measuring the temperature inside the fermentation tank, wherein the system is configured to display a warning and stop supplying urine to the fermentation tank when the temperature detected by the temperature sensor is outside a predetermined range.

4. The toilet system according to claim 1, further comprising an exhaust fan attached to each of the fermentation tanks for exhausting air from inside the fermentation tank, and an exhaust fan sensor for measuring the wind speed of the exhaust fan, wherein the system is configured to display a warning and stop supplying urine to the fermentation tank when the wind speed detected by the exhaust fan sensor is outside a predetermined range.

5. The toilet system according to claim 4, further comprising an outside air temperature sensor for measuring the outside air temperature of the fermentation tank, and an exhaust volume changing means for changing the exhaust volume by the exhaust fan, wherein the exhaust volume is changed according to the outside air temperature.

6. The toilet system according to claim 1, characterized in that the stirring means includes a stirring screw that is rotatably mounted inside the fermentation tank, has a first helical blade having one winding direction formed on one axial end of the central axis, and a second helical blade having another winding direction formed on the other axial end, and is configured to reverse the stirring screw at predetermined intervals.

7. A method for composting human waste by fermenting it together with a carbon source using a toilet system according to any one of claims 1 to 6, The steps include: initially introducing a carbon source into each of the aforementioned fermentation tanks and inoculating aerobic fermentation microorganisms; The steps include: introducing feces into the fermentation tank through the aforementioned fecal-urine-separating toilet and storing urine in the aforementioned urine tank; The process involves daily supplying urine from the urine tank to each fermentation tank in fixed amounts, with predetermined rest periods in between, and not exceeding a predetermined number of times calculated from the daily processing capacity of the fermentation tank, while stirring. A method for treating human waste, characterized by including [a certain element].

8. The method for treating human waste according to claim 7, wherein each fermentation tank is provided with a urine acceptance period during which it can accept urine and a urine acceptance stop period during which it stops accepting urine, and the step of supplying the urine to the fermentation tank is stopped during the urine acceptance stop period.

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