JPH09150171A - Sewage disposal device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stably use a sewage disposal device for a long period of time by temporarily storing sewage and washing water in a storing pipe, overflowing the sewage to a treating tank to aerate, detecting a sewage level in the treating tank and controlling the amount of the washing water based on a water level. SOLUTION: A toilet paper discharged from a toilet, a night soil and a washing water are stored temporarily in a J-shaped pipe 3. Then the mixture is overflowed into a stirring tank 1 and aerated and decomposed preliminarily by sending air from the first aerating pipe 5. When the mixture reaches to the height of a night soil discharge pipe 12, the mixture is overflowed into a treating tank 11 and aerated with the air supplied from the second aerating pipe 16. When a night soil level in the treating tank reaches more than a storing lower limit water level 24, it is detected with the first water level detecting part 23, and an operation optimum temp. of an aerobic bacteria is kept by controlling a heater 21. Also when the water level in the stirring tank 1 and treating tank 11 rise and a set pressure is detected by a pressure detecting part 27, a flow rate control valve is controlled, and an amount of the washing water is increased to break a film generated in the J-shaped pipe 3 with the washing water, to prevent the accumulation of the night soil and to recover treating capacity.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewage treatment apparatus for treating night soil and gray water.

[0002]

2. Description of the Related Art As an apparatus of this type, for example, Japanese Patent Laid-Open No. 64-64-
Japanese Patent No. 75100 (C02F 11/02) is known. This human waste treatment device aerates the human waste collected in the treatment tank and oxygenates aerobic bacteria in human urine to purify human urine by the activity and chemical reaction of the aerobic bacteria in human urine and to remove carbon dioxide and the like. It is converted into gas and water, and the water is used as water vapor along with gas such as carbon dioxide,
Exhaust gas is exhausted from the exhaust stack to treat human waste.

[0003]

However, in the conventional structure, discharged human waste and toilet paper are
Since it collects directly in the treatment tank and is treated in a state where the preliminary disintegration of human waste and toilet paper is insufficient, there is a drawback that the human waste treatment efficiency is deteriorated.

In order to solve this problem, a method of installing a storage pipe for temporarily storing the urine flowing into the processing tank can be considered.

However, in this device, the amount of cleaning water for cleaning the toilet bowl is small and constant in order to suppress the rise of the water level in the treatment tank as much as possible, and the amount of toilet water discharged from the toilet bowl is small. It does not dissolve and adheres to the inner wall of the storage pipe while it is temporarily stored in the storage pipe.
Further, the toilet paper may adhere to and accumulate on the toilet paper one after another, which may cause the toilet paper to form a film in the storage pipe and block the inside of the storage pipe.

Explaining this phenomenon in detail, the water level in the treatment tank and the water level in the storage tube are the same, and even when a water level in the treatment tank is low, even if a film is formed in the storage tube by the accumulation of toilet paper. Since the distance between the human urine inlet and the formed membrane is long, the human urine and a small amount of wash water that flowed into the storage tube from the human urine inlet vigorously hit the membrane, and the membrane formed is broken, but on the contrary. If a film is formed in the storage tube due to the accumulation of toilet paper when the level of human waste water in the treatment tank is high, the distance between the human waste inlet and the formed film is short, so that The membrane cannot be broken by the inflowing urine and a small amount of washing water. In this state, urine is accumulated on the film one after another, the human urine is no longer supplied to the treatment tank, and the human urine processing is stopped.
It causes a problem of bad odor.

The present invention has been made to solve the above problems, and an object thereof is to provide a sewage treatment apparatus which can be stably used for a long period of time.

[0008]

[Means for Solving the Problems] A first means for solving the above problems is a storage pipe in which sewage flows in together with cleaning water and is temporarily stored, and a treatment tank into which sewage overflowing from the storage pipe flows. And an aerator for aerating the inside of the treatment tank, a sensor for detecting the level of waste water in the treatment tank, and a control means for controlling the amount of the washing water based on the output of the sensor. And

According to the first means, when the wastewater level in the treatment tank becomes equal to or higher than a predetermined level, the amount of wash water is controlled to forcefully flow the wastewater into the storage pipe to prevent the storage pipe from being blocked. To prevent.

[0010] A second means for solving the above problems is as follows.
A storage pipe in which dirty water flows in together with wash water and is temporarily stored, a stirring tank into which the dirty water overflowing from the storage pipe flows, an aeration device for aerating the inside of the stirring tank, and the waste water treated in the stirring tank. Is provided, a sensor for detecting the level of sewage water in the stirring tank, and a control means for controlling the amount of the washing water based on the output of the sensor.

By the second means, when the water level of the sewage water in the stirring tank becomes equal to or higher than a predetermined water level, the amount of washing water is controlled so that the sewage water is forced to flow into the storage pipe to block the inside of the storage pipe. To prevent.

A third means for solving the above problems is
A storage pipe in which dirty water flows in together with wash water and is temporarily stored, a stirring tank into which the dirty water overflowing from the storage pipe flows, an aerator for aerating the inside of the stirring tank, and a connection provided at the bottom of the stirring tank. Provided are a treatment tank into which the wastewater treated in the stirring tank by a pipe flows, a sensor for detecting the wastewater level in the stirring tank, and a control means for controlling the amount of the washing water based on the output of the sensor. It is characterized by that.

By the third means, the agitation tank and the treatment tank are connected at the bottom of the tank by a connecting pipe, and if the sewage water level in the agitation tank rises above the connection pipe, the agitation tank and the sewage water level in the treatment tank are increased. At the same time, it becomes difficult to raise the sewage water level, and it is possible to lengthen the fall distance of the sewage, so that it is difficult to block the inside of the storage pipe, and if the sewage water level in the agitation tank and the treatment tank becomes a predetermined water level or more, The amount of wash water is controlled so that the dirty water is forced into the storage pipe to prevent the storage pipe from being blocked.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described in detail below based on the human waste processing apparatus shown in FIGS.

Reference numeral 1 is a stirring tank buried in the ground, 2 is a connecting pipe for connecting the stirring tank 1 to a toilet bowl (not shown), and 3 is a storage disposed in the stirring tank 1 and connected with the connecting pipe 2. In the J-shaped pipe which is a pipe, the toilet paper and human waste discharged from the toilet are temporarily stored in the J-shaped pipe 3 through the connecting pipe 2 together with washing water supplied from a tank (not shown) for cleaning the toilet. . The amount of washing water is usually set to a small amount in order to suppress the rise of the urine water level in the stirring tank 1. Reference numeral 4 is a lid for closing the stirring tank 1.

Reference numeral 5 denotes a first aeration pipe arranged at the bottom of the stirring tank 1, which is connected to the first air blower 7 through the first supply pipe 6 so as to aerate the night soil in the stirring tank 1. Therefore, the first aeration pipe 5, the first supply pipe 6, and the first air blower 7 constitute a first aeration device.

Reference numeral 8 denotes a first exhaust pipe connected to the upper portion of the stirring tank 1, which is connected to a second exhaust pipe 20 which will be described later and exhausts gas and the like from the first exhaust pipe 8 and the second exhaust pipe 20. Is connected to the exhaust pipe 9. Reference numeral 10 denotes an exhaust fan installed in the exhaust pipe 9, and includes an intake pipe 19 to the stirring tank 1 described later.
Further, in order to take in outside air into the processing tank 11 which will be described later, the exhaust amount is set to be larger than the total amount of air blown by the first air blower 7 and the second air blower 18 described later.

Reference numeral 11 denotes a processing tank which is buried in the ground, and the bottom part of the processing tank 11 has an outflow pipe 12 and the upper part of the processing tank 11 is connected to the stirring tank 1 through a communication pipe 13. 14 is the processing tank
In the electrical equipment storage box arranged on the upper part of 11, a large number of intake ports (not shown) are formed on the side surface, and the treatment tank 11 is closed by the bottom plate. Blower 18, first blower 7, exhaust fan 10, second described later
A control unit 15 for controlling the blower device 18, the first heater 21, the second heater 22, etc., and having a control circuit 28, which will be described later, is housed.

Reference numeral 16 is a second aeration pipe arranged at the bottom of the treatment tank 11, which is connected to a second blower 18 via a second supply pipe 17 so as to aerate the night soil in the treatment tank 11. ing. The second aeration pipe 16, the second supply pipe 17, and the second blower 18 constitute a second aeration device. Reference numeral 19 is an intake cylinder whose upper part is supported by the bottom plate of the electrical equipment storage box 14 and supplies outside air into the processing tank 11 and the stirring tank 1 via the communication pipe 13. Reference numeral 20 is a second exhaust tube connected to the upper part of the processing tank 11 for exhausting gas and the like in the processing tank 11.

Reference numeral 21 is a first heater disposed in the night soil of the inner bottom of the treatment tank 12 and is disposed on the second aeration pipe 16 to prevent the bottom surface of the treatment tank 11 from being affected by heat. Reference numeral 22 is a second heater provided above the first heater 21. The first heater 21 and the second heater 22 cause a predetermined temperature to activate the activity of aerobic bacteria in the human excrement, which is 30 degrees Celsius in this embodiment. It is designed to be maintained within the range of 40 degrees.

Reference numeral 23 denotes a first water level detecting section arranged in the processing tank 11 so that the first heater 21 arranged in the processing tank 11 can detect a storage lower limit water level 24 which is immersed in the minimum urine. It has become. Reference numeral 25 denotes a second water level detection unit disposed in the treatment tank 11, which is a storage upper limit water level 26 (a water level that can be used for about 7 days in this embodiment, which is slightly lower than the full water level of the urine in the stirring tank 1 and the treatment tank 11). ) Is detected.

Reference numeral 27 is a pressure detector provided in the second supply pipe 17 for detecting the blowout pressure of the second blower 18,
When the human urine water level in the agitation tank 1 and the treatment tank 11 is low, the pressure detection unit 27 detects a relatively low value, and when the human urine water level is high, the pressure detection unit 27 detects a relatively high value. Based on the output of the detection unit 27, the level of human waste water in the stirring tank 1 and the processing tank 11 can be known.

Next, the electric circuit of this embodiment will be described with reference to FIG. Reference numeral 28 denotes a first water level detection unit 23 that detects a lower limit water level 24 of urine in the treatment tank 11, a second water level detection unit 25 that detects an upper limit water level 26 of urine stored in the agitation tank 1 and the treatment tank 11, and a second
It is a control circuit for inputting an output from a pressure detection unit 27 that detects the blowout pressure of the blower 18, and supplies air to the urine in the first tank 7 and the treatment tank 11 that supplies air to the urine in the stirring tank 1. Second blower 18, first heater 21, second heater 22, stirring tank 1 and processing tank which maintain human waste in processing tank 11 at a predetermined temperature
The exhaust fan 10 that exhausts the gas and the like in 11 is controlled.

Reference numeral 29 is a flow rate adjusting valve for limiting the amount of toilet flush water supplied from a tank (not shown).
When 27 detects a predetermined pressure value or more due to the rise of night soil in the stirring tank 1 and the treatment tank 11, the opening / closing time of the flow rate adjusting valve 29 is controlled based on the output of the control circuit 28 to increase the amount of washing water. It is supposed to do.

Reference numeral 30 is an alarm device composed of a buzzer, an indicator, etc. arranged in the toilet, and when the second water level detection unit 25 detects the upper limit water level 26 of the urine stored in the agitation tank 1 and the processing tank 11, Based on the output of the control circuit 28, an alarm indicating that the water is full is issued. Reference numeral 31 is an energizing lamp composed of an indicator or the like arranged in the toilet, and is for indicating that the human waste treatment device is in operation.

The discharged human waste is passed through the connecting pipe 2 together with the toilet paper and the washing water for washing the toilet bowl, and the J
When the amount of urine increases, the urine is mixed with the toilet paper, which temporarily accumulates in the character tube 3, and the urine volume increases.
The urine overflows as it is mixed inside. The human excrement collected in the agitation tank 1 is agitated by the air supplied from the first aeration pipe 5 by the drive of the first air blower 7, and oxygen is dissolved in the human excrement, so that the activity and chemical reaction of aerobic bacteria The gas such as carbon dioxide and steam generated by preliminarily decomposing human waste is forcibly exhausted from the first exhaust pipe 8 by the exhaust fan 10, and the outside air passes through the intake pipe 19 and the communication pipe 13 with the exhaust air into the stirring tank 1. Inflow.

Since the human excrement in the stirring tank 1 is stored up to the height of the human excrement outflow pipe 12, the human excrement accumulated in the agitating tank 1 is sufficiently decomposed and preliminarily decomposed until it overflows into the treatment tank 11. The discharged human waste overflows when it reaches the height of the human waste outflow pipe 12, and flows into the processing tank 11.

The human urine flowing into the treatment tank 11 is agitated by the air supplied from the second aeration pipe 16 by driving the second air blower 18, and oxygen is dissolved in the human sewage to activate aerobic bacteria. The gas such as carbon dioxide and steam generated by being decomposed by the chemical reaction are forcedly exhausted by the exhaust fan 10 from the second exhaust pipe 20, and the outside air flows into the processing tank 11 from the intake pipe 19 with the exhaust.

When the level of human waste water in the treatment tank 11 rises and the first water level detector 23 detects that the lower limit water level is 24 or more, the control circuit 28 controls the first heater 21 so that the human waste in the treatment tank 11 is discharged. The activity of aerobic bacteria is maintained at the optimum temperature, the activity of aerobic bacteria is activated, and the decomposition of urine is further enhanced.

Furthermore, the level of human urine rises, and the pressure detector
When 27 detects a predetermined pressure value or more, the control circuit 28 controls the second heater 22, and the two heaters of the first heater 21 and the second heater 22 make the urine in the treatment tank 11 optimal for the activity of aerobic bacteria. Keep at temperature.

Since the surface area of the heater is increased by using the two heaters, the temperature of the heater is lowered when maintaining the predetermined temperature of human waste as compared with the case of using a single heater, and the heater surface is Prevents adhesion of dirt in human urine,
Prevents deterioration of heater function.

Since the human excrement excreted by the first heater 21 is heated to the vicinity of the liquid surface, the second heater 22 is set to the first
If the same temperature as that of the heater 21 is set, the temperature in the vicinity of the liquid surface of the human urine becomes higher than that in the bottom surface, causing temperature unevenness. Therefore, the temperature of the second heater 22 should be set lower than that of the first heater 21. As a result, the entire human waste is kept at a uniform temperature to improve the efficiency of sewage treatment and save the electricity cost of the second heater 22.

In this sewage treatment apparatus, in order to suppress the rise in the water level in the agitation tank 1 as much as possible, the amount of cleaning water for cleaning the toilet bowl is small and constant, and the amount of toilet water discharged from the toilet bowl is small. Does not melt, but adheres to the inner wall of the J-shaped tube 3 while it is temporarily stored in the J-shaped tube 3, and the toilet paper adheres to and accumulates on the toilet paper one after another, resulting in a J-shape. There is a risk that the toilet paper may form a film in the pipe 3 to block the inside of the J-shaped pipe 3.

That is, the water level in the agitation tank 1 and the water level in the J-shaped tube 3 are the same, and when the black water level in the agitation tank 1 is low,
Even if a film is formed in the J-shaped tube 3 by depositing toilet paper, since the distance between the connecting tube 2 and the formed film is long, the urine and a small amount of urine flowing from the connecting tube 2 into the J-shaped tube 3 are washed. Since the water hits the membrane vigorously, it breaks the formed membrane, but conversely, when the level of human waste water in the stirring tank 1 is high,
When a film is formed in the J-shaped tube 3 due to the accumulation of toilet paper, since the distance between the connecting tube 2 and the formed film is short, the urine and a small amount of urine flowing from the connecting tube 2 into the J-shaped tube 3 are generated. You cannot break the membrane with the wash water. In this state, urine is accumulated on the film one after another, the human urine is no longer supplied to the stirring tank 1, the human urine processing is stopped, and the odor becomes severe.

Since the agitation tank 1 and the processing tank 11 are connected at the bottom of the tank by the human sewage outflow pipe 12, when the level of the human sewage water in the agitation tank 1 rises to the height of the human sewage outflow pipe 13, the agitation tank 1 and the treatment tank 11 The night soil in the inside rises at the same time, and the stirring tank 1 and the processing tank 11
Since it becomes difficult to raise the level of human waste water in the inside, it is possible to prevent the inside of the J-shaped tube 3 from being blocked by the toilet paper, and to raise the level of human waste water in the agitation tank 1 and the treatment tank 11 to cause the pressure detection unit 27.
When the predetermined pressure value is detected by the control circuit 28, the control circuit 28 controls the flow rate adjusting valve 29 to increase the amount of washing water, so that the human waste vigorously flows into the J-shaped tube 3. Even if a film is generated in the character tube 3, the film can be broken.

If the membrane ruptures even at one place, each time the human waste passes through the ruptured place, the membrane gradually grows and disappears, so that the urine is accumulated on the membrane one after another and the human urine cannot be supplied into the stirring tank 1. Prevent the stoppage of human waste processing and the generation of offensive odor.

During long-term travel, the inflow of pre-decomposed sewage into the treatment tank 11 may be stopped for a long period of time. In such a case, the water level in the treatment tank 11 is lowered and the first water level detection unit
If it detects that 23 is below the lower storage level 24,
The power of the first heater 21 is cut off by the control of the control circuit 28,
Prevent lowering of the water level in human waste. Even when the water level of human waste falls below the lower storage water level 24, the aeration from the second aeration pipe 16 maintains the activity and chemical reaction of aerobic bacteria and continues the decomposition.

In this embodiment, the stirring tank 1 and the processing tank 11
However, the stirring tank 1 may be omitted, and the discharged human waste may directly flow into the processing tank 11.

[0039]

According to the structure of claim 1 of the present invention, when the wastewater level in the treatment tank becomes equal to or higher than a predetermined level, the amount of wash water is controlled to forcefully flow the wastewater into the storage pipe, It is possible to prevent the inside of the storage pipe from being blocked by the toilet paper, and it is possible to prevent the sewage treatment from being stopped and the generation of a foul odor due to the accumulation of urine on the blocked surface.

According to the second aspect of the present invention, when the wastewater level in the stirring tank becomes equal to or higher than a predetermined level, the amount of wash water is controlled to forcefully flow the wastewater into the storage pipe, and the toilet paper. As a result, it is possible to prevent the inside of the storage pipe from being blocked, and to prevent the sewage treatment from being stopped and the generation of a foul odor due to the accumulation of urine on the blocked surface.

According to the configuration of claim 3 of the present invention, since the sewage water level in the agitation tank and the treatment tank rises at the same time, making it difficult to raise the sewage water level, the sewage water can be dropped for a long distance. When it becomes difficult for the inside of the storage pipe to be blocked, and when the wastewater level in the agitation tank and the treatment tank reaches or exceeds the predetermined water level, the amount of wash water is controlled, and the wastewater is forced to flow into the storage pipe to block the inside of the storage pipe. Therefore, it is possible to prevent the sewage treatment from being stopped due to the accumulation of urine on the closed surface and the generation of a foul odor.

[Brief description of the drawings]

FIG. 1 is a side sectional view of one embodiment of the present invention.

FIG. 2 is the same electric circuit diagram.

[Explanation of symbols]

 3 J-shaped tube 11 Processing tank 27 Pressure detector 28 Control circuit

Claims (3)

[Claims] 1. A storage pipe in which sewage flows in together with cleaning water and is temporarily stored, a treatment tank into which sewage overflowing from the storage pipe flows, an aeration device for aerating the inside of the treatment tank, and the inside of the treatment tank. The sewage treatment apparatus comprising a sensor for detecting the sewage water level and a control means for controlling the amount of the rinsing water based on the output of the sensor. 2. A storage pipe in which dirty water flows in together with wash water and is temporarily stored, a stirring tank into which the dirty water overflowing from the storage pipe flows, an aerator for aerating the inside of the stirring tank, and the inside of the stirring tank. A sewage treatment apparatus comprising: a treatment tub into which the sewage treated in step 1 flows, a sensor for detecting the sewage water level in the stirring tub, and a control means for controlling the amount of the rinsing water based on the output of the sensor. 3. A storage pipe in which sewage flows in together with wash water and is temporarily stored, a stirring tank into which sewage overflowing from the storage pipe flows, an aeration device for aerating the inside of the stirring tub, and the bottom of the stirring tub. A treatment tank into which the wastewater treated in the stirring tank flows by a connecting pipe provided in, a sensor for detecting the wastewater level in the stirring tank, and the amount of the washing water is controlled based on the output of the sensor. Sewage treatment device consisting of control means.