JPH08257578A - Sewage treatment apparatus - Google Patents

Abstract

PURPOSE: To efficiently perform the supply of oxygen to the surface of sewage and the discharge of carbon dioxide or steam generated by the decomposition of sewage by arranging an air sending cylinder on the imaginary line passing the center of an exhaust port and a treatment tank when the treatment tank is looked from above. CONSTITUTION: Excretion is stored in a stirring tank 1 from a J-shaped pipe 3 through a connection pipe 2 and stirred by the supply of air from the first blower 7 connected to a first air supply pipe 5 to be preparatorily decomposed. Carbon dioxide and steam generated at this time are forcibly discharged from a first exhaust port 8 by an exhaust fan 21. The excretion flowing in a treatment tank 9 is decomposed by the supply of air from the second blower 16 connected to a second air supply pipe 14. In this case, an air sending cylinder 11 is arranged at the position opposed to a second exhaust port 18 with respect to the center of the treatment tank 9 on the immaginary line passing the center of the second exhaust port 18 and the treatment tank 9 when the treatment tank 9 is looked from above. By this constitution, a large amt. of foam generated by the air supplied into excretion is removed.

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 device of this kind, a human waste treatment device for treating human waste without pumping it is disclosed in, for example, Ukaihei 1-152.
No. 798 (C02F 3/00). In this processing apparatus, an air supply pipe having an air outlet in the human sewage collected in the processing tank is connected to a blower so that air is supplied from the blower into the human urine and the human urine is stirred. In addition, the air blower is provided on the air blower tube facing the urine surface, and air is blown from the air blower tube to the human urine surface to blow away the bubbles generated by the supply of air into the human urine by the blower, and also to blow a large amount with the blower. By supplying air into the human urine to promote the activity and chemical reaction of aerobic bacteria in human urine to purify human urine, and to exhaust gases such as carbon dioxide generated by human urine purification from the exhaust stack. Has become.

[0003]

However, in the conventional configuration, it is important to remove a large amount of bubbles generated by the supply of air from the blower into the night soil, and the air blown from the air blower can be efficiently discharged. Although it is necessary to have a structure in which the air is blown onto the surface, the above-mentioned conventional technology merely discloses a blower tube and does not consider the efficiency of the blower at all.

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]

[Means for Solving the Problems] A first means for solving the above problems is a treatment tank having an inflow port for inflowing sewage, and an air supply pipe having an air outlet for sewage in the sewage water. And a blower that supplies air to the air supply pipe,
An exhaust port for exhausting gas or the like generated from wastewater in the treatment tank, an exhaust pipe connected to the exhaust port and having an opening in the atmosphere, and a blower for supplying air to the surface of the wastewater in the treatment tank. With a blower tube having, when viewed from the top of the processing tank,
The blower tube is arranged on an imaginary line passing through the center of the exhaust port and the processing tank.

A second means for solving the above problems is
A treatment tank having an inflow port for inflowing sewage, an air supply pipe having an air outlet in the sewage in the sewage tank, a blower for supplying air to the air supply pipe, and a sewage in the treatment tub Exhaust port for exhausting a gas or the like, an exhaust pipe connected to the exhaust port and having an opening in the atmosphere and having an exhaust fan, and a blower pipe having an opening facing the surface of waste water in the treatment tank. And the blower tube is arranged on an imaginary line passing through the exhaust port and the center of the treatment tank when the treatment tank is viewed from above.

A third means for solving the above problems is
A treatment tank having an inflow port for inflowing sewage, an air supply pipe having an air outlet in the sewage in the sewage tank, a blower for supplying air to the air supply pipe, and a sewage in the treatment tub An exhaust port for exhausting a gas or the like, an exhaust pipe connected to the exhaust port and having an opening in the atmosphere, and a blower pipe having a blower for supplying air to the sewage surface in the treatment tank, When the processing tank is viewed from above, the blower tube is arranged between the exhaust port and the center of the processing tank on an imaginary line passing through the exhaust port and the center of the processing tank, and the air blown from the blower tube is exhausted through the exhaust port. It is characterized in that a means for carrying out toward the opposite side is formed.

A fourth means for solving the above-mentioned problems is as follows.
A treatment tank having an inflow port for inflowing sewage, an air supply pipe having an air outlet in the sewage in the sewage tank, a blower for supplying air to the air supply pipe, and a sewage in the treatment tub Exhaust port for exhausting a gas or the like, an exhaust pipe connected to the exhaust port and having an opening in the atmosphere and having an exhaust fan, and a blower pipe having an opening facing the surface of waste water in the treatment tank. When viewed from the top of the treatment tank, the blower tube is disposed between the exhaust port and the center of the treatment tank on an imaginary line passing through the center of the treatment tank, and the blower tube is provided. It is characterized in that a means for performing the blowing of air toward the opposite side of the exhaust port is formed.

The fifth means for solving the above-mentioned problems is as follows.
A treatment tank having an inflow port for inflowing sewage, an air supply pipe having an air outlet in the sewage in the sewage tank, a blower for supplying air to the air supply pipe, and a sewage in the treatment tub An exhaust port for exhausting a gas or the like, an exhaust pipe connected to the exhaust port and having an opening in the atmosphere, and a blower pipe having a blower for supplying air to the sewage surface in the treatment tank, When the processing tank is viewed from above, the blower tube is arranged at a position substantially opposite to the exhaust port with respect to the center of the processing tank on an imaginary line passing through the exhaust port and the center of the processing tank. It is characterized in that a means for blowing the air toward the exhaust port side is formed.

A sixth means for solving the above problems is as follows.
A treatment tank having an inflow port for inflowing sewage, an air supply pipe having an air outlet in the sewage in the sewage tank, a blower for supplying air to the air supply pipe, and a sewage in the treatment tub Exhaust port for exhausting a gas or the like, an exhaust pipe connected to the exhaust port and having an opening in the atmosphere and having an exhaust fan, and a blower pipe having an opening facing the surface of waste water in the treatment tank. And the blower tube is disposed at a position substantially opposite to the exhaust port with respect to the center of the processing tank on an imaginary line passing through the exhaust port and the center of the processing tank when viewed from above. A means for sending air from the air blower toward the exhaust port is formed.

[0011]

According to the structure of claim 1, the waste water in the treatment tank is agitated by the air supply from the blower connected to the air supply pipe having the air outlet in the waste water in the treatment tank. It is supplied with oxygen and decomposes waste by the activity and chemical reaction of aerobic bacteria.

Furthermore, when the treatment tank is viewed from above, the air blown to the surface of the sewage from the blower cylinder arranged on an imaginary line passing through the exhaust port and the center of the treatment tank flows to the exhaust port along the inner wall of the treatment tank. Therefore, it is exhausted from the exhaust port together with the gas such as carbon dioxide floating on the surface of the dirty water.

By this air flow, bubbles covering the surface of the sewage generated by the air supply to the sewage are scattered to prevent the aerobic bacteria from being killed in the oxygen deficient state, and at the same time, the sewage is discharged. Efficiently supplying a large amount of oxygen from the surface to the entire surface of sewage, the activity and chemical reaction of aerobic bacteria are further activated, and the decomposition of sewage is further enhanced.

According to the second aspect of the present invention, the waste water in the treatment tank is agitated by the air supplied from the blower connected to the air supply pipe having the air outlet in the waste water in the treatment tank. It is supplied with oxygen and decomposes waste by the activity and chemical reaction of aerobic bacteria.

Further, a large amount of gas such as carbon dioxide floating on the surface of the sewage generated by the decomposition of the sewage is exhausted from the exhaust stack by the exhaust fan together with the steam, and the air flowing into the treatment tank due to the exhaust is , Is supplied from the air blower to the surface of the sewage.

Since this air flows to the exhaust port along the inner wall of the treatment tank, the bubbles covering the surface of the sewage generated by the air supply to the sewage are scattered, resulting in an oxygen-deficient state and aerobic bacteria. To prevent death,
Efficiently supplying a large amount of oxygen to the entire surface of the wastewater from the surface of the wastewater, the activity and chemical reaction of aerobic bacteria are further activated, and the decomposition of the wastewater is further enhanced.

According to the structure of claim 3, the waste water in the treatment tank is agitated by the air supply from the blower connected to the air supply pipe having the air outlet in the waste water in the treatment tank. It is supplied with oxygen and decomposes waste by the activity and chemical reaction of aerobic bacteria.

Further, the air blown from the blower tube toward the opposite side of the exhaust port by the blower flows to the inner wall of the processing tank on the side opposite to the exhaust port, swirls, and flows toward the exhaust port, so that on the surface of the sewage. Efficiently exhausted from the exhaust port together with carbon dioxide and other gases drifting around.

By this air flow, the bubbles covering the surface of the wastewater generated by the air supply to the wastewater are scattered to prevent the oxygen-deficient state from aerobically killing the aerobic bacteria. Efficiently supplying a large amount of oxygen from the surface to the entire surface, the activity and chemical reaction of aerobic bacteria are further activated, and the decomposition of waste is further enhanced.

Further, since the exhaust port and the blower tube are arranged close to each other, piping work can be easily carried out.

According to the structure of claim 4, the waste water in the treatment tank is agitated by the air supply from the blower connected to the air supply pipe having the air outlet in the waste water in the treatment tank. It is supplied with oxygen and decomposes waste by the activity and chemical reaction of aerobic bacteria.

Further, a large amount of gas such as carbon dioxide floating on the surface of the wastewater generated by the decomposition of the wastewater is exhausted from the exhaust stack by the exhaust fan together with the steam, and the air flowing into the treatment tank due to the exhaustion is , It is supplied from the blower tube toward the opposite side of the exhaust port, flows to the inner wall of the treatment tank on the opposite side of the exhaust port, swirls, and flows toward the exhaust port, so the surface of the sewage generated by the air supply to the sewage is removed. By scattering the covered bubbles, it prevents oxygen-deficient aerobic bacteria from dying, and efficiently supplies a large amount of oxygen from the surface of the sewage to the surface of the aerobic bacteria. And further activate the chemical reaction to further enhance the decomposition of waste.

Further, since the exhaust port and the blower tube are arranged close to each other, the piping work can be easily carried out.

According to the structure of claim 5, the waste water in the treatment tank is agitated by the air supply from the blower connected to the air supply pipe having the air outlet in the waste water in the treatment tank. It is supplied with oxygen and decomposes waste by the activity and chemical reaction of aerobic bacteria.

Further, the air blown from the blower tube toward the exhaust port by the blower flows to the exhaust port along the inner wall of the treatment tank without generating turbulent flow, so that carbon dioxide or the like floating on the surface of the sewage is removed. It is efficiently exhausted from the exhaust port together with the gas.

By this air flow, bubbles covering the surface of the wastewater generated by the air supply to the wastewater are scattered to prevent the aerobic bacteria from being killed in the oxygen deficient state, and at the same time, the wastewater is discharged. By supplying a large amount of oxygen from the surface to the entire surface, the activity and chemical reaction of aerobic bacteria are further activated and the decomposition of waste is further enhanced.

According to the structure of claim 6, the waste water 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 waste water in the treatment tank. It is supplied with oxygen and decomposes waste by the activity and chemical reaction of aerobic bacteria.

Further, a large amount of gas such as carbon dioxide floating on the surface of the sewage generated by the decomposition of the sewage is exhausted from the exhaust stack by the exhaust fan together with the steam, and the air flowing into the treatment tank due to the exhaust is , Is supplied from the blower tube toward the exhaust port.

Since this air flows along the inner wall of the treatment tank without generating turbulent flow, the bubbles covering the surface of the sewage generated by the air supply to the sewage are scattered, resulting in an oxygen deficiency state. It prevents the aerobic bacteria from dying and efficiently supplies a large amount of oxygen from the surface of the wastewater to the entire surface to further activate the activity and chemical reaction of the aerobic bacteria and further promote the decomposition of the waste.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below in detail with reference to 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 with a toilet bowl (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. ing. Reference numeral 11 denotes a blower cylinder, which is substantially opposed to the second exhaust port 18 with respect to the center of the processing tank 9 on a virtual line passing through the second exhaust port 18 and the center of the processing tank 9 which will be described later when viewed from the upper surface of the processing tank 9. It is placed in the position. Reference numeral 12 denotes a blower port of the blower tube 11, which has a fan shape and faces the second exhaust port side. A blower 13 is installed in the blower tube 11 to blow air on the surface of night soil,
Reference numeral 14 is a second air supply pipe arranged in the processing tank 9,
The second supply pipe 15 having an air outlet is connected to the stirring tank 9
It is located on the inner bottom.

Reference numeral 16 is a second blower which is connected to the second air supply pipe 14 and supplies air. The first blower 7 and the second blower 16 are arranged above the processing tank 9, and the first blower 7 and the second blower 16 are provided. By maintaining electrical components such as the blower 16, the blower 13, the heater 17 and the exhaust fan 21 which will be described later in close proximity to each other, maintenance is facilitated.

A heater 17 is provided in the processing tank 9 and is located on the second supply pipe 15 in order to prevent the tank bottom from being abnormally heated due to direct contact with the tank bottom.
Reference numeral 18 is a second exhaust port provided in the processing tank 9. 19
Is a water level detector in the treatment tank 9 for detecting the lower limit storage position and the upper storage limit position of human waste in the treatment tank 9. Reference numeral 20 is an exhaust pipe that connects the first exhaust port 8 and the second exhaust port 18 and is erected in the atmosphere.
The exhaust fan 21 has a first blower 7 and a second blower.
The blower 16 and the blower 13 are set to have an exhaust volume larger than the total blown volume.

Next, the electric circuit of this embodiment will be described with reference to FIG. Reference numeral 22 is a control circuit for inputting the outputs from the water level detector 19 and the heater temperature detector 23.
The blower 7, the second blower 16, the blower 13, the heater 17, the exhaust fan 21, and the alarm device 24 are controlled. The alarm device 24 is composed of a buzzer, an indicator arranged in a toilet, and the like, and issues an alarm when the water level detection unit 19 detects the storage upper limit position.

The discharged human waste passes through the connecting pipe 2 and is temporarily stored in the J-shaped pipe 3, where it is mixed with the urine as toilet paper, and when the amount of human waste increases, it 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 and is supplied with oxygen, and is polluted by the activity and chemical reaction of aerobic bacteria. The carbon dioxide and water vapor generated by preliminarily decomposing the gas are forcedly exhausted from the first exhaust port 8 by the exhaust fan 21.

Since the agitation tank 1 is stored up to the height of the excrement urine outflow pipe 10 provided on the side wall of the agitation tank 1, the excretion urine accumulated in the agitation tank 1 is preliminarily decomposed until it overflows into the treatment tank 9. The sufficiently pre-decomposed human waste overflows when it reaches the height of the human waste outflow pipe 10 and flows into the treatment tank 9.

The human waste which has flowed into the treatment tank 9 is supplied with air from the second blower 16 connected to the second air supply pipe 14 to supply oxygen to the human waste, and decomposed by the activity and chemical reaction of aerobic bacteria. .

Further, the pre-decomposed human waste is the water level detection unit 1
When the storage lower limit position of 9 is reached, the heater 17 is controlled to maintain the urine in the treatment tank 9 at the optimum temperature for the activity of aerobic bacteria and to drive the blower 13. Blower 13
The air supplied from the blower port 12 of the blower tube 11 toward the second exhaust port 18 side by the blown air spreads over the entire surface of the urine as shown by the arrow in FIG. The gas such as carbon dioxide floating on the surface is efficiently exhausted from the second exhaust port 18.

The flow of air scatters bubbles generated by the air supply from the second supply pipe 15 and covering the urine surface, thereby preventing the aerobic bacteria from dying in the oxygen deficient state. At the same time, a large amount of oxygen is efficiently supplied from the surface of night soil to the entire surface of the night urine to further activate the activity and chemical reaction of aerobic bacteria and further enhance the decomposition of night soil.

During a long trip, the inflow of the pre-decomposed human waste into the treatment tank 9 is temporarily stopped. In such a case, the water level detection unit 19 in the treatment tank 9 detects the storage lower limit position, The power of the blower 13 is turned off by the control of the control circuit 22 to prevent the decrease in the water level of human waste. Furthermore, when the temperature detection unit 23 of the heater 17 is exposed to human urine, the heat from the heater 17 is directly detected, and the power of the heater 17 is cut off by the control of the control circuit 22 to prevent abnormal heating, thereby preventing the processing tank. Suppress evaporation of human waste in 9.

Further, even if the water level of the night soil falls below the lower limit position of storage, the supply of air from the second blower 16 maintains the activity and chemical reaction of aerobic bacteria and continues the decomposition.

In this way, the human urine is efficiently decomposed,
Can be used stably for a long period of time.

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

FIG. 5 and FIG. 6 show a second embodiment of the present invention, in which the blower tube 11 is seen from the top of the processing tank 9 and the second exhaust port 18 is provided.
It is arranged between the second exhaust port 18 and the center of the processing tank 9 on a virtual line passing through the center of the processing tank 9 and the center of the processing tank 9, and the blower tube 11 and the second exhaust port 18 are brought close to each other to facilitate the construction. I can do it. Further, the blower port 12 blows air toward the side opposite to the second exhaust port 18.

In this construction, the human waste which has been sufficiently decomposed in the stirring tank 1 flows into the processing tank 9 and is stirred by the air supply from the second blower 16 and is decomposed by the activity and chemical reaction of aerobic bacteria. To be done.

Further, the pre-decomposed human waste is the water level detection unit 1
When reaching the storage lower limit position of 9, control the heater,
The urine in the treatment tank 9 is maintained at the optimum temperature for the activity of aerobic bacteria, and the blower 13 is driven. The air supplied from the blower 13 to the side opposite to the second exhaust port 18 by the blower 13 blows air from the second exhaust port 1 as shown by the arrow in FIG.
Since it flows to the inner wall of the treatment tank 9 on the opposite side to 8 and swirls and is attracted to the second exhaust port 18 along the inner wall of the treatment tank 9 by the exhaust fan 21, a large amount of waste water is generated on the surface of the wastewater generated in the treatment tank 9. The drifting gas such as carbon dioxide is efficiently exhausted from the second exhaust port 18 together with water vapor, and further, the flow of this air causes the bubbles generated by the supply of air from the second supply pipe 15 to scatter the bubbles covering the urine surface. This prevents oxygen deficiency and death of aerobic bacteria, and efficiently supplies a large amount of oxygen from the surface of human urine to the entire surface of human urine to further promote the activity and chemical reaction of aerobic bacteria. It activates and further promotes the decomposition of human waste.

FIG. 7 shows a third embodiment of the present invention, which has a configuration in which the blower 13 described in the first embodiment is omitted.

In this structure, the human waste which has been sufficiently decomposed in the stirring tank 1 flows into the processing tank 9 and is stirred by the air supply from the second blower 16, and is decomposed by the activity and chemical reaction of aerobic bacteria. To be done.

Further, the pre-decomposed human waste is the water level detection unit 1
When the storage lower limit position of 9 is reached, the exhaust fan 21 is driven, and a large amount of gas such as carbon dioxide floating on the surface of the wastewater generated in the processing tank 9 is exhausted from the second exhaust port 18 together with the steam. The air flowing from the blower tube 11 into the processing tank 9 along with the exhaust air spreads from the blower opening 12 toward the second exhaust opening 18. This air flow causes the second
By scattering bubbles generated by the supply of air from the supply pipe 15 and covering the urine surface, it is possible to prevent the aerobic bacteria from dying due to an oxygen deficiency state and also from the human urine surface and the entire human urine surface. By efficiently supplying a large amount of oxygen, the activity and chemical reaction of aerobic bacteria are further activated, and the decomposition of human urine is further enhanced.

[0051]

As described above, the sewage treatment apparatus of the present invention can efficiently supply oxygen to the surface of sewage and exhaust carbon dioxide and water vapor generated by decomposition of sewage, resulting in good sewage treatment efficiency, There is an effect that it is possible to use it stably for a long period of time without the need to collect it.

[Brief description of drawings]

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

FIG. 2 is a sectional view of the same.

FIG. 3 is a perspective view of the relevant part.

FIG. 4 is the same electric circuit diagram.

FIG. 5 is a side sectional view of a second embodiment of the present invention.

FIG. 6 is a sectional view of the same.

FIG. 7 is a side sectional view of a third embodiment of the present invention.

[Explanation of symbols]

 9 Treatment Tank 11 Blower 13 Blower 14 Second Air Supply Pipe 16 Second Blower 20 Exhaust Cylinder

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

Claims (6)

[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 port for exhausting gas or the like generated from wastewater in the treatment tank, an exhaust pipe connected to the exhaust port and having an opening in the atmosphere, and a blower for supplying air to the surface of the wastewater in the treatment tank. With a blower tube having, when viewed from the top of the processing tank,
The sewage treatment apparatus, wherein the blower tube is arranged on an imaginary line passing through the exhaust port and the center of the treatment tank. 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 port for exhausting gas or the like generated from sewage in the treatment tank, an exhaust pipe connected to the exhaust port, having an opening in the atmosphere and having an exhaust fan, and a sewage surface in the treatment tank. A sewage treatment apparatus comprising: a blower tube having openings facing each other, and the blower tube is disposed on a virtual line passing through the exhaust port and the center of the treatment tank when the treatment tank is viewed from above. 3. A treatment tank having an inlet 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 port for exhausting gas or the like generated from wastewater in the treatment tank, an exhaust pipe connected to the exhaust port and having an opening in the atmosphere, and a blower for supplying air to the surface of the wastewater in the treatment tank. With a blower tube having, when viewed from the top of the processing tank,
Means for arranging the blower tube between the exhaust port and the center of the processing tank on an imaginary line passing through the exhaust port and the center of the processing tank, and for blowing air from the blower tube toward the opposite side of the exhaust port A sewage treatment apparatus characterized in that 4. A treatment tank having an inlet 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 port for exhausting gas or the like generated from sewage in the treatment tank, an exhaust pipe connected to the exhaust port, having an opening in the atmosphere and having an exhaust fan, and a sewage surface in the treatment tank. A blower tube having openings facing each other, and when the processing tank is viewed from above, the blower tube is provided between the exhaust port and the center of the processing tank on a virtual line passing through the center of the processing tank and the exhaust port. A sewage treatment apparatus, wherein the sewage treatment apparatus is provided, and means for sending air from the air blower toward the opposite side of the exhaust port is formed. 5. 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 port for exhausting gas or the like generated from wastewater in the treatment tank, an exhaust pipe connected to the exhaust port and having an opening in the atmosphere, and a blower for supplying air to the surface of the wastewater in the treatment tank. With a blower tube having, when viewed from the top of the processing tank,
The blower tube is arranged at a position substantially opposite to the exhaust port with respect to the center of the processing tank on a virtual line passing through the exhaust port and the center of the processing tank, and the air blown from the blower tube is directed to the exhaust port side. A sewage treatment apparatus characterized in that a means for performing the above is formed. 6. A treatment tank having an inlet for inflowing sewage, an air supply pipe having an air outlet in the sewage in the treatment tank, and a blower supplying air to the air supply pipe.
An exhaust port for exhausting gas or the like generated from sewage in the treatment tank, an exhaust pipe connected to the exhaust port, having an opening in the atmosphere and having an exhaust fan, and a sewage surface in the treatment tank. A blower tube having openings facing each other, and a position substantially facing the exhaust port with respect to the center of the processing tank on a virtual line passing through the exhaust port and the center of the processing tank when the processing tank is viewed from above. A sewage treatment apparatus characterized in that the blower tube is disposed in the air blower, and means for blowing air from the blower tube toward the exhaust port side is formed.