JP7345917B1 - Biological treatment system, biological treatment device, water purification system, biological treatment method, and water purification method - Google Patents

Abstract

The present invention provides a biological treatment system, a biological treatment device, a water purification system, a biological treatment method, and a water purification method that have excellent biological treatment efficiency and stability. SOLUTION: A tank 1 that contains a mixture of a biological treatment target and microorganisms, a monitoring section 2 that monitors the temperature of the mixture, an adjustment section 3 that adjusts the temperature of the mixture, and a A biological treatment system comprising: a control section 4 that controls the adjustment section based on a predicted value. [Selection diagram] Figure 1

Description

The present disclosure relates to a biological treatment system, a biological treatment device, a water purification system, a biological treatment method, and a water purification method.

BACKGROUND ART Systems that use microorganisms to purify wastewater are being applied in various fields.
For example, Patent Document 1 describes a circulating flush toilet including a mechanism for purifying wastewater discharged from the flush toilet and circulating it to the flush toilet bowl.

The circulating flush toilet described in Patent Document 1 includes a biological treatment system that decomposes organic matter in wastewater as well as nitrification and denitrification, and a filtration tank that separates solid-liquid biologically treated water in the biological treatment system. and a decolorization tank that decolorizes the filtered water that has been separated into solid and liquid in the filtration tank, and the treated water that has been decolorized in the decolorization tank is reused as flush water for flush toilets.

Japanese Patent Application Publication No. 2004-132037

BACKGROUND OF THE INVENTION With the diversification of lifestyles and living environments in recent years, water purification systems using microorganisms are increasingly being introduced into relatively small-scale facilities such as houses. In such small-scale water purification systems, the amount and timing of sewage supplied to the biological treatment system tends to be irregular. Furthermore, since the capacity of the biological treatment system is small, the internal temperature tends to fluctuate depending on the amount of wastewater supplied and the timing of supply. Fluctuations in temperature within the biological treatment system, particularly temperature decreases, may cause a decrease in the biological treatment ability of microorganisms, leading to a decrease in treatment efficiency.
In small-scale circulating water treatment systems, it is necessary to perform biological treatment on a small amount of water to reach a water quality that meets the needs of users, and a decline in treatment efficiency is a major problem. In particular, in miniaturized circulating water treatment equipment whose biological treatment capacity is set at the very limit, predicting and controlling the temperature of the object to be treated is important in order to secure surplus biological treatment capacity in advance. .
Therefore, an object of the present disclosure is to provide a biological treatment system, a water purification system, a biological treatment method, and a water purification method that have excellent biological treatment efficiency and stability.

Means for solving the above problems include the following embodiments.
<1> A tank containing a mixture of a biological treatment target and microorganisms;
a monitoring unit that monitors the temperature of the mixture;
an adjusting section that adjusts the temperature of the mixture;
A biological treatment system comprising: a control section that controls the adjustment section based on a predicted value of the temperature of the mixture.
<2> The biological treatment system according to <1>, wherein the predicted value of the temperature of the mixture is determined based on the temperature of the mixture monitored by the monitoring unit and information regarding temperature changes in the mixture.
<3> The biological treatment system according to <1>, comprising a heat insulating material placed around the tank.
<4> A tank containing a mixture of a biological treatment target and microorganisms;
a monitoring unit that monitors the temperature of the mixture;
an adjusting section that adjusts the temperature of the mixture;
A biological treatment device comprising: a control section that controls the adjustment section based on a predicted value of the temperature of the mixture.
<5> A water purification system comprising the biological treatment system according to any one of <1> to <3> or the biological treatment device according to <4>.
<6> Monitoring the temperature of the mixture contained in a tank containing the mixture of the biological treatment target and microorganisms;
adjusting the temperature of the mixture;
The biological treatment method, wherein the adjustment of the temperature is controlled based on a predicted value of the temperature of the mixture.
<7> A water purification method comprising the step of implementing the biological treatment method according to <6>.

According to the present disclosure, there are provided a biological treatment system, a biological treatment device, a water purification system, a biological treatment method, and a water purification method that have excellent biological treatment efficiency and stability.

FIG. 1 is a conceptual diagram showing an example of the configuration of a biological treatment system. FIG. 2 is a conceptual diagram showing an example of the configuration of a control section. FIG. 6 is a diagram illustrating an example of a process in which the control unit determines a command to the adjustment unit based on the monitoring result received from the monitoring unit.

In the present disclosure, a numerical range indicated using "~" indicates a range that includes the numerical values written before and after "~" as the minimum value and maximum value, respectively.
In the numerical ranges described step by step in this disclosure, the upper or lower limit stated in one numerical range may be replaced by the upper or lower limit of another numerical range described step by step, and , may be replaced with the values shown in the examples.

<Biological treatment system>
The biological treatment system of the present disclosure includes:
a tank containing a mixture of a biological treatment target and microorganisms;
a monitoring unit that monitors the temperature of the mixture;
an adjusting section that adjusts the temperature of the mixture;
A control section that controls the adjustment section based on a predicted value of the temperature of the mixture.

The treatment efficiency of a biological treatment system is affected by temperature changes within the biological treatment system. For example, if the temperature within the biological treatment system is not within a range suitable for the activity of microorganisms, the rate of decomposition of organic matter by the microorganisms will decrease, the organic matter will die, and the processing capacity of the biological treatment system will decrease.
In order to restore the processing capacity once reduced, time is required for microorganisms to acclimate and multiply, and depending on the type of microorganisms, it may take several months to return to the original state.
Therefore, in order to stably perform biological treatment, it is effective to reduce temperature fluctuations within the biological treatment system.

One possible method for reducing temperature fluctuations within the biological treatment system is to equalize the temperature of the biological treatment objects supplied to the biological treatment system. However, depending on how the biological treatment system is used, it may be difficult to equalize the temperature of the biological treatment target.
Another method for reducing temperature fluctuations within a biological treatment system is to provide the biological treatment system with a temperature regulating device such as a heater. However, depending on the capacity of the biological treatment system, there may be a large time lag until the temperature that has changed due to the supply of the biological treatment target returns to its original state.
The biological treatment system of the present disclosure is particularly effective for use on a very small scale, such as a treatment capacity of 1,000 m ³ or less per day.

The biological treatment system of the present disclosure includes a mechanism including a monitoring section, an adjustment section, and a control section, so that the temperature inside the tank can be controlled with desired accuracy. Therefore, even if the temperature of the object to be subjected to biological treatment fluctuates greatly, stable biological treatment can be performed.

FIG. 1 is a schematic configuration diagram of the biological treatment system of the present disclosure. In FIG. 1, devices that are generally installed in biological treatment systems, such as an aeration device, a stirring device, and a pump, are not shown.
The biological treatment system shown in FIG. 1 includes a tank 1 containing a mixture of biological treatment objects and microorganisms;
a monitoring unit 2 that monitors the temperature of the mixture;
Adjusting parts 3a and 3b that adjust the temperature of the mixture;
A control section 4 that controls the adjustment section based on a predicted value of the temperature of the mixture is provided.
The adjustment section 3a has a function of increasing the temperature inside the tank. For example, it is a heating device that increases the temperature inside the tank.
The adjustment section 3b has a function of suppressing a temperature rise within the tank. For example, it is a cooling device that lowers the temperature inside the tank.
By providing the adjustment units 3a and 3b, it becomes possible to control the temperature to the optimum temperature for microorganisms without being affected by the region or place where the biological treatment system of the present disclosure is installed or the surrounding environment. The adjustment units 3a and 3b function selectively as appropriate depending on the location where the biological treatment system of the present disclosure is installed, and may operate continuously or discontinuously. Further, the adjustment parts 3a and 3b may have the function of the adjustment part 3b or 3a (for example, the adjustment part 3a may have a function of heating and cooling the temperature inside the tank by circulating hot water or cold water. ).

The monitoring section 2 monitors the temperature of the mixture in the tank, and transmits the monitoring result to the control section 4 through the signal transmission means 11.
The control section 4 transmits a command to the drive device 5a or 5b of the adjustment section 3a or 3b using the signal transmission means 12a or 12b.
When the drive device 5a receives a command from the control section 4, the adjustment section 3a heats the mixture in the tank.
When the drive device 5b receives the command from the control section 4, the adjustment section 3b cools the mixture in the tank.

The configuration shown in FIG. 1 is an example conceptually showing the configuration of a biological treatment system, and the specific configuration of the present disclosure is not limited to the configuration shown in FIG. 1.
For example, a plurality of monitoring units 2 may be installed in the tank 1. Further, the adjustment section 3 may have only the function of raising or lowering the temperature of the mixture, or it may have both functions. For example, in regions where the temperature of the mixture is not high enough to inhibit the activity of microorganisms, the regulator 3 may have only the function of increasing the temperature of the mixture.

The biological treatment system of the present disclosure may or may not be a separate object.
A biological treatment system when it is an independent object may be mobile. For example, it may be in a state where it can be transported and used at a predetermined location during camping, disaster evacuation, and the like. Furthermore, the biological treatment system of the present disclosure may be a module (a standardized structural unit that facilitates recombination) that constitutes a water treatment system.
Examples of biological treatment systems that are not independent objects include cases where the biological treatment system is incorporated as part of a building or an object other than a building.
Examples of objects other than buildings include, but are not limited to, automobiles, trains, ships, aircraft, and trailer houses.

(tank)
The tank included in the biological treatment system of the present disclosure includes a container of a desired size. The material of the container is not particularly limited and can be selected from resin, metal, ceramics, etc.
The upper limit of the amount of the mixture contained in the tank is not particularly limited and can be selected depending on the use of the biological treatment system. For example, the upper limit of the amount of mixture contained in the tank may be 10,000 liters, 5,000 liters, 1,000 liters, 500 liters, 300 liters, 150 liters, or 50 liters.
The lower limit of the amount of the mixture contained in the tank is not particularly limited, and can be set depending on the usage method of the biological treatment system. From the viewpoint of effectively performing biological treatment, the lower limit of the amount of the mixture stored in the tank may be 10 liters.

The mixture contained in the tank includes at least the object of biological treatment and microorganisms.
The object of biological treatment may contain a liquid component and a solid component, or may contain only a liquid component.
The target of biological treatment contained in the mixture is not particularly limited. Examples include domestic wastewater discharged from households and small-scale communities such as toilets, kitchens, and bathrooms, urban wastewater, commercial facility wastewater, agricultural wastewater, industrial wastewater, and the like.
The type of microorganisms contained in the mixture is not particularly limited. For example, the microorganism may be an aerobic bacterium, an anaerobic bacterium, or a combination thereof.
Specific examples of the microorganisms contained in the mixture include nitrifying bacteria, yeast, Escherichia coli, denitrifying bacteria, dephosphorizing bacteria, and denitrifying phosphorus-accumulating bacteria.

(Monitoring Department)
The biological treatment system of the present disclosure includes a monitoring unit that monitors the temperature of the mixture.
The means by which the monitoring unit monitors the temperature of the mixture is not particularly limited, and known means such as a thermometer, infrared sensor, radiation thermometer, thermograph, thermistor, etc. can be used. The means for monitoring temperature may be contact or non-contact.
The monitoring result by the monitoring unit may be an actual measurement value of the temperature of the mixture or a converted value such as an index or a rate of change.

The monitoring unit may monitor the temperature continuously or intermittently.
When the monitoring unit intermittently monitors the temperature, the length of the period during which no monitoring is performed is not particularly limited, and may be selected from a range of 1 hour to 1 week, for example.

The monitoring unit may monitor the temperature of the mixture completely automatically or may monitor the temperature of the mixture using a combination of automatic and manual monitoring.
An example of completely automatic temperature monitoring is the use of a device that has a function of automatically monitoring temperature. Further, the temperature may be automatically monitored at a frequency and timing set based on learned data learned from usage trends of the biological treatment system of the present disclosure.
An example of a case where the temperature is monitored by a combination of automatic and manual methods is a case where the monitoring unit itself does not perform the monitoring but notifies the operator that the temperature should be monitored.

(Adjustment section)
The biological treatment system of the present disclosure includes a controller that adjusts the temperature of the mixture.
Adjustment of the temperature of the mixture by the adjustment section includes increasing the temperature of the mixture and decreasing the temperature of the mixture.
By increasing the temperature when the temperature of the mixture is below the lower limit of the set range and lowering the temperature when it is above the upper limit of the set range, the temperature of the mixture is kept within the appropriate range and stable. Biological treatment can be achieved.

An example of the operation for increasing the temperature of the mixture is an operation of heating the mixture using a heating device placed in the tank.
An example of an operation for lowering the temperature of the mixture is to introduce a coolant such as water into the tank.

The temperature adjustment by the adjustment section may be performed continuously or intermittently.
When the adjustment section adjusts the temperature intermittently, the length of the period during which no adjustment is performed is not particularly limited, and may be selected from a range of 1 hour to 1 week, for example.

The adjustment section may be one that controls the temperature of the mixture completely automatically or a combination of automatic and manual controls.
An example of completely automatic temperature adjustment is the case where a device having a function of automatically adjusting temperature is used. In addition, the temperature may be adjusted at a frequency and timing set based on learned data learned from usage trends of the biological treatment system of the present disclosure and changes in the surrounding environment such as outside temperature, or the temperature may be adjusted in advance based on the timing. The temperature may be adjusted.
When the temperature is adjusted automatically and manually, the adjustment section itself does not perform the adjustment, but notifies the operator that the temperature should be adjusted.

(control unit)
The biological treatment system of the present disclosure includes a control unit that controls the adjustment unit based on a predicted value of the temperature of the mixture.

For example, the control unit controls the adjustment unit to increase the temperature of the mixture when the predicted value of the temperature of the mixture is below the lower limit of the set range, and controls the adjusting unit to increase the temperature of the mixture when the predicted value of the temperature of the mixture is below the upper limit of the set range. If the temperature exceeds the temperature, the regulator is controlled to lower the temperature of the mixture.

As the control unit, a device having an arithmetic processing function such as a computer can be used. FIG. 2 is a conceptual diagram showing an example of the configuration of the control section.
The control unit 4 shown in FIG. 2 includes a CPU, RAM, ROM, and nonvolatile memory. In the control unit 4, the CPU reads the program from the ROM, expands it to the RAM, and executes the process included in the program. The program is provided to the control unit via a nonvolatile memory such as a CD, DVD, or USB memory. Alternatively, the program may be provided to the control unit via a network.

The control unit 4 shown in FIG. 2 is connected to the sensor and thermistor included in the measurement unit 2 and the heating device and cooling device included in the adjustment unit 3.
The control unit 4 shown in FIG. 2 is further connected to pumps and blowers via relays (on/off switching devices).
The pumps and blowers may be controlled by a system different from the control unit 4.

In the present disclosure, the control section "controls the adjustment section based on the predicted value of the temperature of the mixture" means that the control section "controls the adjustment section based on the predicted value of the temperature of the mixture" refers to the value predicted as the temperature of the mixture at a time later than the time when the control section controls the adjustment section. means to control the adjustment section based on the

The control unit controls the adjustment unit based on the predicted value of the temperature of the mixture, for example, when the predicted value Tn of the temperature of the mixture n hours from now exceeds the upper limit value or falls below the lower limit value of the setting range. can be mentioned.
In this case, the control unit controls the adjustment unit to increase or decrease the current temperature T0 monitored by the monitoring unit. For example, if the predicted value Tn of the temperature of the mixture after n hours is below the lower limit of the set range, the control unit controls the adjustment unit to increase the current temperature T0. As a result, the temperature after n hours falls within the set range.

The control unit controls the adjustment unit based on the predicted temperature of the mixture, which reduces the temperature generated within the biological treatment system compared to heating or cooling based only on the current temperature of the mixture. Fluctuations can be made smaller. Therefore, the influence of temperature changes on the activity of microorganisms can be further reduced, the biological treatment can be made more stable, and the treatment capacity can be maximized.

The predicted value of the temperature of the mixture used by the control unit to control the adjustment unit is determined, for example, based on the temperature (current temperature) of the mixture monitored by the monitoring unit and information regarding the temperature change of the mixture.
The information regarding the temperature change of the mixture includes at least information regarding the supply of the object of biological treatment, information regarding the surrounding environment, and the like.
Information regarding the supply of the biological treatment target includes the time at which the biological treatment target is supplied, the amount of supply, the temperature of the target at the time of supply, and the like.
The information regarding the supply of biological treatment objects may include a pattern in which biological treatment objects are supplied to the biological treatment system. For example, if the supply amount of the biological treatment target changes regularly in a certain cycle depending on time (or time zone), day of the week, season, region, etc., the pattern of the change may be included in the information.
Examples of patterns of change include, for example, in the winter, the target material is supplied in large quantities and at a high temperature (due to bathtub use), and in the summer, the target material is supplied in a small amount and at a low temperature (due to shower use). Examples include patterns of changes in water levels, and patterns of times when wastewater containing a large amount of organic components from toilet use and cooking is concentrated. Further, the patterns of change are different between domestic wastewater discharged from households and small-scale communities, and urban wastewater, commercial facility wastewater, agricultural wastewater, industrial wastewater, etc., and individual change patterns may be included as information.
Information regarding the surrounding environment includes the temperature in the installation space where the biological treatment system of the present disclosure is installed, the outside temperature, humidity, weather information, water intake/makeup water information, and the like.

The predicted value of the temperature of the mixture may be obtained by inputting information for calculating the predicted value to the control section and causing the control section to calculate the predicted value based on the information.
For example, the control unit may calculate the predicted value based on the temperature of the mixture monitored by the monitoring unit (current temperature) and information for calculating the predicted value input to the control unit.
The information input to the control section includes information regarding the temperature change of the mixture described above.
The information input to the control unit may include a pattern in which objects to be biologically treated are supplied to the biological treatment system. For example, if the amount of the biological treatment target, the temperature at the time of supply, etc. change regularly in a certain cycle, the pattern of the change may be input to the control unit.

The information input to the control unit may include information obtained by machine learning.
For example, output data obtained by inputting information regarding the temperature of the mixture as described above to the learned model may be input to the control unit. The output data obtained from the trained model includes the rate of change in the temperature of the mixture, the predicted value of the temperature of the mixture after a predetermined period of time, and the like.

The control unit may have a function of improving control accuracy while using data regarding past control as learning data. That is, the control unit may include a function (machine learning function) to generate a learned model.
The machine learning function is achieved by, for example, a learning data storage section, a learning section, and a learned model storage section.
The learning section reads learning data stored in the learning data storage section. Then, the learning unit generates a learned model by causing a predetermined machine learning model to learn using a supervised machine learning algorithm based on the read learning data. The trained model storage unit stores the trained model generated by the learning unit.

FIG. 3 shows an example of a process in which the control unit determines a command to the adjustment unit based on the predicted value of the temperature of the mixture. Here, the predicted temperature value means the temperature after a predetermined time (n hours) from the current time, and is set so that the adjustment of the temperature of the mixture by the adjustment unit is maintained appropriately after the predetermined time.
In the example shown in FIG. 3, first, the predicted value R of the temperature of the mixture is calculated by the arithmetic processing section of the control section (step S1).
Next, the control unit determines whether the predicted value R is below the lower limit of the setting range (step S2). If the predicted value R is below the lower limit of the set range, the control unit determines a command to increase the temperature of the mixture (step S3).
Next, the control unit determines whether the predicted value R exceeds the upper limit of the setting range (step S4). If the predicted value R exceeds the upper limit of the setting range, the control unit determines a command to lower the temperature of the mixture (step S5).
If the predicted value R does not fall below the lower limit of the set range and does not exceed the upper limit, the control unit decides to maintain the temperature of the mixture. That is, the control section may continue to monitor the temperature of the mixture together with the monitoring section without issuing a command to the adjustment section. Alternatively, the lighting width of the heater may be finely adjusted to maintain the temperature (step S6).

The setting range in which the control unit makes the determination is not particularly limited and can be set arbitrarily.
For example, the temperature may be set within a temperature range of 20°C to 40°C, preferably 25°C to 35°C, which is a temperature range suitable for the activity of major microorganisms used in biological treatment.
The setting range in which the control unit makes the determination may be constant or may vary. The setting range may be determined by the actual temperature value, or by other methods (for example, the degree of deviation from the temperature range suitable for microbial activity).

In addition to controlling the adjustment section based on the predicted value of the temperature of the mixture, the control section may also control the adjustment section based on the temperature of the mixture monitored by the monitoring section.
That is, the controller may control the regulator based on the current temperature of the mixture. For example, if the current temperature of the mixture is below the lower limit of the set range, the controller is controlled to increase the temperature of the mixture, and if the current temperature of the mixture is above the upper limit of the set range, the controller is controlled to increase the temperature of the mixture. The regulator may be controlled to reduce the temperature.

As an example of a process in which the control unit determines a command to the adjustment unit based on the temperature of the mixture monitored by the monitoring unit, in the example shown in FIG. Input of temperature R monitored by the monitoring unit (step S1)".

(insulation material)
The biological treatment system of the present disclosure may include a heat insulating material (equipment having a heat insulating effect, material having a heat insulating effect, etc.) placed around the tank.
When the biological treatment system is equipped with a heat insulating material, fluctuations in the temperature of the mixture in the tank can be made smaller.
The type of material having a heat insulating effect is not particularly limited, and can be selected from known heat insulating materials such as resin foam.
The heat insulating material may be placed so as to cover the entire periphery of the tank, or may be placed so as to cover a portion of the periphery (such as the bottom surface) of the tank.

(Diffuser)
The biological treatment system of the present disclosure may include an air diffuser that supplies air to the tank containing the mixture.
By supplying air to the tank containing the mixture, oxygen necessary for the activity and survival of microorganisms is ensured, and a decrease in activity and death of microorganisms can be suppressed.
The amount of air supplied by the air diffuser is not particularly limited, and can be set depending on the amount of biological objects and microorganisms contained in the mixture.
The place where the air diffuser is installed is not particularly limited as long as it is a place where air can be supplied to the tank containing the mixture. For example, the air diffuser may be placed at the bottom of the tank.

The air diffuser may supply air continuously or intermittently to the tank containing the mixture.
When an aeration device intermittently supplies air to a tank containing a mixture, for example, the air diffuser may supply air at times when it promotes the activities of microorganisms that prefer aerobic conditions (nitrification reactions, etc.), and at times when air is supplied. An example of this is a case in which periods in which the activities of microorganisms that prefer anaerobic conditions (such as denitrification reactions) are promoted are alternately repeated.
Alternatively, when the biological treatment system is used frequently, the activity and proliferation of microorganisms is promoted by supplying air, and when the biological treatment system is used less frequently, the air supply is stopped to suppress the activity of microorganisms. There are cases.

(stirring device)
The biological treatment system of the present disclosure may include a stirring function to stir the mixture.
By stirring the mixture, contact between the object of biological treatment and microorganisms is promoted, and the efficiency of biological treatment is improved.

The structure of the stirring device is not particularly limited. For example, the stirring device may be one that performs stirring by rotating a stirring bar, or may be one that performs stirring by supplying air.
The location where the stirring device is installed is not particularly limited as long as it can stir the mixture outside the frame. For example, the stirring device may be placed at the bottom of the tank.

(filter)
The biological treatment system may include a filter to filter the mixture.
By providing the biological treatment system with a filter, for example, when the mixture after biological treatment is taken out from the biological treatment system, microorganisms in the mixture can be separated from the object after biological treatment.

The structure of the filter is not particularly limited. For example, it may be a porous body, an aggregate of hollow fibers, or the like.

(Other equipment)
If necessary, the biological treatment system may include devices other than those described above.
For example, the biological treatment system may include a device for obtaining information other than the temperature of the mixture.
Specifically, the information other than the temperature of the mixture includes the concentration of microorganisms, ammonia concentration, nitrite concentration, nitric acid concentration, dissolved oxygen concentration, organic matter concentration, pH, etc. of the mixture.
Information other than the temperature of the mixture may be transmitted to the control unit together with the monitoring result of the temperature of the mixture, or may be transmitted to a device separate from the control unit.

<Biological treatment equipment>
The biological treatment device of the present disclosure includes:
a tank containing a mixture of a biological treatment target and microorganisms;
a monitoring unit that monitors the temperature of the mixture;
an adjusting section that adjusts the temperature of the mixture;
A control section that controls the adjustment section based on a predicted value of the temperature of the mixture.

Details and preferred aspects of the biological treatment device of the present disclosure may be similar to details and preferred aspects of the biological treatment system of the present disclosure.
That is, the details and preferred embodiments of the biological treatment device of the present disclosure can be referred to by replacing the "biological treatment system" with "biological treatment device" in the above description of the biological treatment system.

<Water purification system>
The water purification system of the present disclosure includes the biological treatment system or biological treatment device described above.
The water purification system may consist only of a biological treatment system or biological treatment device, or may include a biological treatment system or biological treatment device and a mechanism other than the biological treatment system.
Specifically, mechanisms other than the biological treatment system or biological treatment device include a tank for separating solid components and liquid components contained in the biological treatment target, and a system for separating the microorganisms contained in the biological treatment target and biological treatment. Examples include a tank for separating the target object after biological treatment, and a tank for storing the target object after biological treatment.

For example, a tank for separating solid components and liquid components contained in a biological treatment target may be used to adjust the concentration of organic matter contained in a target to be supplied to a biological treatment system or biological treatment device. Or maintain good biological treatment efficiency of biological treatment equipment. Examples of methods for separating the solid component and liquid component contained in the object include a method of precipitating the solid component and a method of passing the solid component through a filter.
The biological treatment system or biological treatment device may have a function of separating solid components and liquid components contained in the biological treatment target.

A tank for separating the microorganisms contained in the biologically treated object from the biologically treated object prevents the microorganisms from flowing out of the water purification system together with the biologically treated object, for example. Examples of methods for separating the microorganisms contained in the target object from the target object after biological treatment include a method of precipitating the microorganisms, a method of passing the microorganisms through a filter, and the like.
The biological treatment system or biological treatment device may have a function of separating microorganisms contained in the biologically treated object from the treated object.

For example, the tank for storing the object after biological treatment adjusts the timing of releasing the object after biological treatment.
The biological treatment system may have a function of storing the target object after biological treatment.

The water purification system may include a mechanism for decolorizing the object after biological treatment.
Mechanisms for decolorizing objects after biological treatment include ozone generators, activated carbon, and the like.
The mechanism for decolorizing the object after biological treatment may be provided, for example, in a tank for storing the object after biological treatment.

The water purification system may include a mechanism for disinfecting objects after biological treatment. For example, a mechanism for adding chemicals such as chlorine to the object after biological treatment, a mechanism for treating it with ozone, etc. may be provided.
A mechanism for disinfecting the biologically treated object may be provided, for example, in a tank for storing the biologically treated object.

The water purification system may include a mechanism for adding microorganisms or a nutrient source for microorganisms to the object of biological treatment.

The water purification system may include a mechanism for purifying objects after biological treatment.
By purifying the object after biological treatment, the impurity content of the object after biological treatment can be reduced to a desired standard.
The type of mechanism for purifying the object after biological treatment is not particularly limited, and can be selected depending on the use of the object after biological treatment, the required purity, etc. Specific examples include reverse osmosis membranes (RO membranes), ultrafiltration membranes (UF membranes), microfiltration membranes (MF membranes), and activated carbon.
The water purification system may include a tank for storing objects purified by the above mechanism.

Water purification systems can be used with or without circulation.
In the present disclosure, the water purification system is of a circulation type, meaning that all or part of the biologically treated target is returned to the source of the biologically treated target.
Specifically, a circulating water purification system is a system that biologically treats wastewater from household equipment such as the kitchen, bathroom, and toilet, and then reuses the biologically treated wastewater as flush water for flush toilets. Flush toilets), etc.

<Biological treatment method>
The biological treatment method of the present disclosure includes:
monitoring the temperature of the mixture contained in a tank containing the mixture of the biological treatment target and the microorganism;
adjusting the temperature of the mixture;
In a biological treatment method, the temperature adjustment is controlled based on a predicted temperature of the mixture.

According to the biological treatment method of the present disclosure, the temperature in the tank containing the mixture of the biological treatment target and microorganisms can be controlled with desired accuracy. Therefore, even if there are large fluctuations in the supply amount, temperature at the time of supply, timing of supply, etc. of the biological treatment target, efficient and stable biological treatment can be performed.

The method of carrying out the biological treatment method of the present disclosure is not particularly limited. For example, it may be implemented using the biological treatment system or biological treatment device of the present disclosure described above. In this case, the details and preferred aspects of implementing the biological treatment method are the same as the details and preferred aspects of implementing the biological treatment system of the present disclosure described above.

<Water purification method>
The water purification method of the present disclosure includes the step of implementing the biological treatment method of the present disclosure described above.

The water purification method may include a step of separating solid components and liquid components contained in the biological treatment target. Examples of methods for separating the solid component and liquid component contained in the object include a method of precipitating the solid component and a method of passing the solid component through a filter.

The water purification method may include a step of separating microorganisms contained in the biologically treated object from the biologically treated object. Examples of methods for separating the microorganisms contained in the target object from the target object after biological treatment include a method of precipitating the microorganisms, a method of passing the microorganisms through a filter, and the like.

The water purification method may include a step of storing the object after biological treatment.

The water purification method may include a step of decolorizing the object after biological treatment. Examples of methods for decolorizing the object after biological treatment include a method of supplying ozone to the object after biological treatment, a method of bringing the object after biological treatment into contact with activated carbon, and the like.

The water purification method may include a step of disinfecting the object after biological treatment. For example, the process may include a step of adding a chemical such as chlorine to the biologically treated object, a step of supplying ozone, and the like.

The water purification method may include a mechanism for adding microorganisms or a nutrient source for microorganisms to the object of biological treatment.

Water purification methods can be used with or without circulation.
Specific examples of circulating water purification methods include biologically treating wastewater from household equipment such as kitchens, bathrooms, and toilets, and then reusing the biologically treated wastewater as flushing water for flush toilets. .

1: Tank 2: Monitoring section 3a, 3b: Adjustment section 4: Control section 5a, 5b: Drive device 11, 12a, 12b: Signal transmission means

Claims (6)

a tank containing a mixture of a biological treatment target and microorganisms;
a monitoring unit that monitors the temperature of the mixture;
an adjusting section that adjusts the temperature of the mixture;
a control unit that controls the adjustment unit based on a predicted value of the temperature of the mixture,
The predicted value of the temperature of the mixture is determined based on the temperature of the mixture monitored by the monitoring unit and information regarding the temperature change of the mixture,
A biological treatment system , wherein the information regarding the temperature change of the mixture includes a supply pattern of a biological treatment target . The biological treatment system according to claim 1, comprising a heat insulating material disposed around the tank. a tank containing a mixture of a biological treatment target and microorganisms;
a monitoring unit that monitors the temperature of the mixture;
an adjusting section that adjusts the temperature of the mixture;
a control unit that controls the adjustment unit based on a predicted value of the temperature of the mixture,
The predicted value of the temperature of the mixture is determined based on the temperature of the mixture monitored by the monitoring unit and information regarding the temperature change of the mixture,
A biological treatment apparatus , wherein the information regarding the temperature change of the mixture includes a supply pattern of a biological treatment target. A water purification system comprising the biological treatment system according to claim 1 or 2 or the biological treatment device according to claim 3 . monitoring the temperature of the mixture contained in a tank containing the mixture of the biological treatment target and the microorganism;
adjusting the temperature of the mixture;
the adjustment of the temperature is controlled based on a predicted value of the temperature of the mixture;
The predicted value of the temperature of the mixture is determined based on the temperature of the mixture monitored in the monitoring step and information regarding the temperature change of the mixture,
The biological treatment method , wherein the information regarding the temperature change of the mixture includes a supply pattern of the biological treatment target . A water purification method comprising the step of implementing the biological treatment method according to claim 5 .