JPH08117769A - Sewage treatment apparatus - Google Patents

Abstract

PURPOSE: To stably use a sewage treatment apparatus over a long pariod of time by detecting the water level in a treatment tank to control a blower spraying air on the surface of the sewage in the treatment tank. CONSTITUTION: A blower 12 is controlled by the output from the water level detection part 19 of a treatment tank 9 to send air to the surface of the sewage in the treatment tank 9. Whereupon, the surface of the sewage is covered with carbon dioxide generated by the decomposition of filth to drift along the surface of the sewage and air bubbles generated by the supply of air from a pipe 13 to become an oxygen deficient state to prevent the killing of aerobic bacteria and a large amt. of oxygen is supplied from the surface of the sewage to activate the activity of aerobic bacteria to accelerate the decomposition of filth. As a result, filth is perfectly decomposed and generated carbon dioxide is discharged from an exhaust cylinder 20 along with steam. By this constitution, a sewage treatment apparatus can stably be used over a long period of time.

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 human waste and gray water.

[0002]

2. Description of the Related Art As a sewage treatment apparatus for treating purified water without pumping it, for example, Japanese Utility Model Laid-Open No. 1-152798 (C02F 3/00) is known. This sewage treatment system connects an air supply pipe with an air outlet to the sewage collected in the treatment tank with a blower, supplies air into the sewage from the blower, and blows air from the blower cylinder onto the sewage surface. , Agitating sewage and giving oxygen to aerobic bacteria in the sewage, purifying sewage with aerobic bacteria in the sewage and converting it to carbon dioxide and water vapor, and exhausting it from the exhaust stack, eliminating the need for pumping It is composed.

[0003]

However, in the conventional configuration, the inflow of sewage into the treatment tank may be temporarily stopped in the case of a small family or during a long trip, but in this case, in the treatment tank, The wastewater evaporates by blowing air from the air blower before the decomposition of the waste by the aerobic bacteria ends, and the undecomposed waste dries and adheres to the bottom of the tank.
Even if new sewage flows in thereafter, this sewage does not dissolve in the sewage and remains. If this state continues, adhered substances will accumulate in the processing tank, and it will be necessary to remove the adhered contaminants.

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.

[0005]

In order to solve the above problems, the present invention provides a treatment tank having an inflow port for inflowing sewage, and an air supply pipe having an air blowout port for sewage water in the treatment tank. A blower for supplying air to the air supply pipe,
An exhaust pipe connected to the treatment tank for exhausting gas generated from wastewater in the treatment tank, a blower for blowing air to the surface of the wastewater in the treatment tank, and a sensor for detecting the water level of the wastewater in the treatment tank. And a control device for controlling the blower according to the output of the sensor.

Further, a treatment tank having an inflow port for inflowing sewage, an air supply pipe having an air outlet in the sewage water in the treatment tank, a blower for supplying air to the air supply pipe, and the treatment described above. An exhaust pipe connected to the tank and having an exhaust fan for exhausting gas generated from wastewater in the treatment tank, a blower cylinder having an opening facing the wastewater surface in the treatment tank, and a water level of the wastewater in the treatment tank. And a control device for controlling the exhaust fan based on the output of the sensor.

[0007]

According to the structure of claim 1, the sewage in the treatment tank is agitated by the air supply from the blower connected to the air supply pipe having the air blowing port into the sewage water in the treatment tank, and the sewage in the treatment tank is oxygenated. The supplied carbon dioxide and water vapor generated by decomposing filth by the activity of aerobic bacteria are exhausted from the exhaust stack. Furthermore, by blowing air to the sewage surface from a blower that is controlled by the output from the water level detection unit of the treatment tank, carbon dioxide floating on the surface of the sewage generated by decomposition of sewage and air supply to the sewage The generated bubbles cover the surface of the sewage and prevent the aerobic bacteria from dying in the oxygen-deficient state, and also supply a large amount of oxygen from the surface of the sewage to further activate the aerobic bacteria. , Further improve the decomposition of filth.
As a result, the waste is completely decomposed, and the generated carbon dioxide is exhausted from the exhaust stack together with water vapor to prevent the aerobic bacteria from being killed.

Furthermore, in the case of a small family or during a long trip,
Even if the inflow of sewage into the treatment tank is temporarily stopped, the water level detection unit in the treatment tank detects the water level of the sewage, and the control circuit controls to turn off the power of the blower. , Prevent accumulation.

According to the second aspect of the present invention, the exhaust fan controlled by the output from the water level detector of the processing tank forcibly exhausts the gas such as carbon dioxide generated in the processing tank. Along with this, air flows from the air blower toward the surface of the wastewater in the treatment tank, and is generated by the decomposition of the wastewater, which is caused by the large amount of carbon dioxide floating on the surface of the wastewater and the supply of air to the wastewater. Preventing the aerobic bacteria from dying due to the bubbles covering the surface of the sewage and killing the aerobic bacteria, and also supplying a large amount of oxygen from the surface of the sewage to further activate the aerobic bacteria and to increase the sewage. Improve decomposition further. In this way, the waste in the processing tank is decomposed and further vaporized to reduce the amount.

Furthermore, in the case of a small family or during a long trip,
Even if the inflow of sewage into the treatment tank is temporarily stopped, the water level detection unit in the treatment tank detects the water level of the sewage, and the control circuit controls the exhaust fan to turn off the power to reduce the sewage water level. Prevents residue and accumulation.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below in detail based on the human waste processing apparatus shown in FIGS.

1 is a stirring tank which is buried in the ground except for the top, 2 is a connecting pipe for connecting the stirring tank 1 to a toilet (not shown), and 3 is the connecting pipe provided in the stirring tank 1. In the J-shaped pipe connected to 2, the discharged toilet paper and human waste are temporarily stored there through the connecting pipe 2. Reference numeral 4 denotes an intake port having openings in the stirring tank 1 and the atmosphere, and 5 is a first air supply pipe arranged in the stirring tank 1, and a first supply pipe 6 having an air blowing port is provided in the stirring tank. It is located at the inner bottom. 7 is a first for connecting to the air supply pipe and supplying air
The blower 8 is a first exhaust port connected to the stirring tank 1.

Reference numeral 9 denotes a processing tank which is buried in the ground except for the top, which is covered with a heat insulating material (not shown), and the stirring tank 1 and the processing tank 9 are connected by a human urine outflow pipe 10. . 11 is a blower tube whose opening is opposed to the surface of human waste in the treatment tank $, 12 is a blower installed in the blower tube 11,
Reference numeral 13 denotes a second air supply pipe arranged in the processing tank 9,
The second supply pipe 14 having an air outlet is connected to the stirring tank 9
It is located on the inner bottom. 15 is the second air supply pipe 1
A second blower for supplying air to the first blower,
The blower 7 and the second blower 15 are arranged above the processing tank 9, and the first blower 7, the second blower 15, the blower 12,
By arranging electric parts such as a heater 16 and an exhaust fan 17, which will be described later, close to each other, maintenance is easily performed.

Reference numeral 16 is a heater provided on the second supply pipe 14 in order to prevent direct contact with the bottom of the treatment tank 9 and abnormal heating of the bottom of the treatment tank 9, and 18 is connected to the treatment tank 9. The second exhaust port 19 provided is a water level detection unit in the processing tank 9 for detecting the lower limit storage position and the upper storage limit position of human waste in the processing tank 9. Reference numeral 20 denotes an exhaust pipe that connects the first exhaust port 8 and the second exhaust port 18 and is erected in the atmosphere, and has an exhaust fan 17, and the exhaust fan 17 includes the first blower 7 and the second blower 7. The blower 15 and the blower 12 are set to have a larger exhaust volume than the total blown volume.

Next, the electric circuit of this embodiment will be described with reference to FIG. Reference numeral 21 is a control circuit for inputting the outputs from the water level detector 19 and the heater temperature detector 22.
The blower 7, the second blower 15, the blower 12, the heater 16, the exhaust fan 17, and the alarm device 23 are controlled. The alarm device 23 is composed of a buzzer, an indicator arranged in a toilet, and the like, and issues an alarm when the water level detector 19 detects the upper limit storage position.

The discharged human waste passes through the connecting pipe 2 and is temporarily stored in the J-shaped pipe 3, where the urine is mixed with the toilet paper, and when the amount of human waste increases, the human waste is mixed from the J-shaped pipe 3 into the stirring tank 1. It fits and urine overflows. The human waste collected in the agitation tank 1 is agitated by the air supply from the first blower 7 connected to the first air supply pipe 5, oxygen is supplied,
The carbon dioxide and water vapor generated by preliminarily decomposing filth by the activity of aerobic bacteria are forcedly exhausted from the first exhaust port 8 by the exhaust fan 17. In the stirring tank 1, the stirring tank 1
The human urine stored on the side wall of the human urine is stored up to the height of the human urine outflow pipe 10 and sufficiently predecomposed, and when it reaches the height of the human urine outflow pipe 10, it overflows and flows into the treatment tank 9.

The inflowing night soil is agitated by the air supply from the second blower 15 connected to the second air supply pipe 13, and decomposed by the activity of aerobic bacteria. Further, when the pre-decomposed human waste reaches the storage lower limit position of the water level detection unit 19, the heater 16 is controlled to maintain the human waste in the treatment tank 9 at the optimum temperature for the activity of aerobic bacteria and according to the water level of human waste. The blower is blown from the surface of urine by controlling the blower, and the surface of the urine is covered with carbon dioxide generated by the decomposition of sewage and a large amount of carbon dioxide floating on the surface of the urine and bubbles generated by the supply of air from the second supply pipe 13. This prevents the aerobic bacteria from dying due to an oxygen deficiency state, and supplies a large amount of oxygen from the surface of the human urine to further activate the aerobic bacteria and further promote the decomposition of the waste. As a result, the filth is completely decomposed, and the generated carbon dioxide is forcibly discharged from the exhaust pipe 20 through the second exhaust port 18 by the exhaust fan 17 together with the steam to prevent the aerobic bacteria from being killed.

In the case of a small family or during a long trip, the inflow of the pre-decomposed human waste into the treatment tank 9 may be temporarily stopped. In such a case, the water level detection unit in the treatment tank 9 may be stopped. 19
Detects the storage lower limit position and turns off the power of the blower 12 by the control of the control circuit 21 to prevent the water level of the human waste from decreasing, and when the temperature detection unit 22 of the heater 16 is exposed from human waste, The heat is directly sensed, and the control circuit 21 controls the heater 16 to turn off the power to prevent abnormal heating. In this way, the blower 12 and the heater 16 are controlled according to the water level of the night soil to suppress the evaporation of night soil in the treatment tank 9 and prevent undecomposed filth from sticking and accumulating at the bottom of the tank. It can be used stably for a long period of time. Further, even when the water level of human waste is below the storage lower limit position, the supply of air from the second blower 15 maintains the activity of aerobic bacteria and continues the decomposition.

Although the stirring tank and the treatment tank are provided in the first embodiment, the stirring tank may be omitted and the discharged human waste directly flows into the treatment tank.

FIG. 3 shows a second embodiment of the present invention, in which the blower 12 described in the first embodiment is omitted and the blower tube 11 is placed closer to the urine surface.

In this construction, the human waste sufficiently preliminarily decomposed in the stirring tank 1 flows into the processing tank 9, is stirred by the air supply from the second blower 15, and is decomposed by the activity of aerobic bacteria. Further, when the pre-decomposed human waste reaches the storage lower limit position of the water level detection unit 19, the exhaust fan 17 is controlled to forcibly exhaust gas such as carbon dioxide generated in the processing tank 9. Along with this, air flows from the blower tube 11 toward the surface of the night soil in the treatment tank 9, and a large amount of carbon dioxide generated on the surface of the night soil generated by the decomposition of the waste and the air from the second supply pipe 13 are generated. By covering the human urine surface with bubbles generated by the supply of oxygen, it is possible to prevent the aerobic bacterium from dying in the oxygen deficient state and also to supply a large amount of oxygen from the human urine surface to support the activity of the aerobic bacterium. It becomes more active and further promotes the decomposition of filth. In this way, the waste in the processing tank 9 is decomposed and further vaporized to reduce the amount.

[0022]

As described above, the sewage treatment apparatus according to claim 1 of the present invention controls the blower according to the water level of the sewage even when the inflow of the sewage is temporarily stopped in the case of a small family or during a long trip. Thus, it is possible to prevent undecomposed filth from sticking to and depositing on the bottom of the tank, and it is possible to use it stably for a long period of time.

The sewage treatment apparatus according to the second aspect of the present invention controls the exhaust fan according to the water level of the sewage even if the inflow of the sewage is temporarily stopped in the case of a small family or during a long trip etc. It is possible to prevent the decomposed wastes from sticking to and depositing on the bottom of the tank, and it is possible to use the wastes stably for a long period of time.

[Brief description of drawings]

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

FIG. 2 is the same electric circuit diagram.

FIG. 3 is a side sectional view of a second embodiment of the present invention.

[Explanation of symbols]

 9 Processing Tank 12 Blower 13 Second Air Supply Pipe 15 Second Blower 19 Water Level Detector 20 Exhaust Cylinder 21 Control Circuit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takehiko Takimoto 2-5-5 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd.

Claims (2)

[Claims] 1. A treatment tank having an inflow port for inflowing sewage, an air supply pipe having an air outlet in the sewage in the treatment tank, and a blower for supplying air to the air supply pipe.
An exhaust pipe connected to the treatment tank for exhausting gas generated from wastewater in the treatment tank, a blower for blowing air to the surface of the wastewater in the treatment tank, and a sensor for detecting the water level of the wastewater in the treatment tank. And a control device for controlling the blower according to the output of the sensor. 2. A treatment tank having an inflow port for inflowing sewage, an air supply pipe having an air outlet in the sewage in the treatment tank, and a blower for supplying air to the air supply pipe.
An exhaust pipe connected to the treatment tank and having an exhaust fan for exhausting gas generated from wastewater in the treatment tank, a blower cylinder having an opening facing the wastewater surface in the treatment tank, and the wastewater in the treatment tank. A sewage treatment device comprising a sensor for detecting the water level of the exhaust gas and a control device for controlling the exhaust fan by the output of the sensor.