JPH10266299A - Waste water treatment system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system whose waste water treatment capacity can be maintained even in a place where there is a limit on electric power, a water quantity or the like. SOLUTION: Toilet blows 2a and 2b are flushed by forcibly flowing flash water from a water supply tank 11 arranged on an inclined face A by using a level difference. Waste water discharged after the toilet bowls 2a and 2b are flushed, is made to flow in a pump tank 6 after being treated by a waste water treatment tank 4, and is pumped up by a feed water pump 9, and is refluxed to the water supply tank 11. As a result, even if there is a limit on a water quantity, the toilet bowls 2a and 2b can be always flushed. Electric power to operate a blower 7 to send and supply air to the treatment tank 4 and the conveying pump 9, is supplied from an electric power supply part 20 to generate electric power by both a wind power generator 21 and a solar battery 22. Therefore, the electric power can be always stably supplied.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wastewater treatment system capable of maintaining a wastewater treatment capacity even in a place where electric power and water flow are limited.

[0002]

2. Description of the Related Art Generally, in an area where public sewerage is not widespread, purification of organic pollutants such as night soil and gray water is performed by a septic tank. This septic tank is equipped with various treatment tanks such as a sedimentation separation tank, a tank, and a sedimentation tank as a water treatment system, and pollutants in the wastewater are physically or biologically removed while slowly flowing through these treatment layers. Removal
After predetermined disinfection, it is released or reused as treated water.

[0003] Such a septic tank is very useful, and is generally used widely as one that can be expected to have a treatment effect equivalent to that of a terminal treatment facility of a public sewerage system. However, in order to maintain the wastewater treatment capacity of the septic tank at a high level. It is necessary to continuously supply air (oxygen) into the tank and circulate through the tank to activate the microorganisms. In addition, it is contained in night soil and accumulated in the tank and activates the microorganisms. It is necessary to keep the amount of sodium chloride which inhibits the reaction below a predetermined amount.

[0004] The present applicant has proposed a technique of a small-sized combined treatment septic tank for effectively treating human waste and gray water discharged from homes in Japanese Patent Application Laid-Open No. 63-185496. According to this prior art, the inside of the septic tank is circulated by the supply of air to activate bacteria and improve the treatment capacity.

[0005]

As described above, it is necessary to circulate the water to be treated in the septic tank by supplying air or the like. Therefore, in a building located at a high altitude, such as a mountain hut on a mountain climbing route, it is often difficult to install a septic tank in terms of securing power.

Also, in buildings located at the above-mentioned highlands, it is also difficult to secure domestic water, and it is uneconomical to use domestic water every time wastewater is discharged from a wastewater collecting section such as a toilet. is there.

However, it is not preferable in terms of environmental sanitation to discharge the wastewater discharged from the building or the like without any treatment.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a wastewater treatment system capable of sufficiently maintaining wastewater treatment capacity even in a place where power, water amount, and the like are limited. And

[0009]

In order to achieve the above object, a wastewater treatment system according to the present invention according to claim 1 is provided.
Circulation of washing water in a water supply tank for supplying washing water to the sewage collection section, a septic tank for treating sewage discharged from the sewage collecting section, and a pump tank for circulating the treated water treated in the septic tank to the water tank. A power supply unit that generates power based on natural energy and supplies power to at least an air supply unit that supplies air to the septic tank and a circulation unit that circulates the circulation system. It is characterized by having.

In a second aspect of the present invention, there is provided a wastewater treatment system for supplying cleaning water to a sewage collection unit, a clarification tank for treating sewage discharged from the sewage collection unit, and a treatment tank for treating the sewage discharged from the sewage collection unit. A pump tank that recirculates the treated water into the water supply tank constitutes a circulation system for the wash water, and also performs power generation based on natural energy, and at least air supply means for supplying air to the purification tank, A circulating means for circulating the circulating system, and a power supply unit for supplying power to the circulating system, further comprising a water tank for storing rainwater above the water tank,
The water supply tank and the water storage tank are communicated with each other through a curved pipe having one end facing a bottom surface in the water storage tank.

That is, in the wastewater treatment system according to the first aspect of the present invention, when the washing water is supplied from the water supply tank to the sewage collecting section and the sewage collecting section is washed, the rinsing water is converted into sewage and the sewage collection is performed. Discharged from the department. The sewage discharged from the sewage collection unit flows into a septic tank, is subjected to a purification treatment, and then flows into a pump tank as treated water. further,
The treated water flowing into the pump tank is returned to the water supply tank. In addition, power is generated in the power supply unit based on natural energy, and the generated power is circulated through at least an air supply unit that supplies air to activate the inside of the septic tank and a circulation system of the cleaning water. Power is supplied to the circulating means.

In the wastewater treatment system according to the present invention, when the washing water is supplied from the water supply tank to the sewage collecting section and the sewage collecting section is washed, the washing water is converted into sewage and the sewage collecting section is used as the sewage. Is discharged from The sewage discharged from the sewage collection unit flows into a septic tank, is subjected to a purification treatment, and then flows into a pump tank as treated water. Further, the treated water flowing into the pump tank is returned to the water supply tank. In addition, power is generated in the power supply unit based on natural energy, and the generated power is circulated through at least an air supply unit that supplies air to activate the inside of the septic tank and a circulation system of the cleaning water. Power is supplied to the circulating means. further,
Rainwater is stored in the water storage tank, and when the stored amount of rainwater exceeds a predetermined amount, the stored rainwater is sent to the water supply tank, and the water to be treated in the septic tank is diluted by the rainwater.

[0013]

Embodiments of the present invention will be described with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a wastewater treatment system for purifying wastewater discharged from a mountain hut 2 whose one side faces a slope A, which is located at a high place or the like.

In the room of the mountain hut 2, toilets 2a and 2b as sewage collection units are installed. On the roof of the mountain hut 2, a water collecting device such as a rain gutter for collecting rain water during rainfall. 2c is formed.

Downstream of the toilets 2a and 2b is a drain pipe 3
Through the drainage inlet 4a of the septic tank 4
An outlet 4b of the purification tank 4 is connected to an inlet 6a of a pump tank 6 through a water pipe 5.

The septic tank 4 circulates the inflowed wastewater and purifies the wastewater by performing processes such as sedimentation, aeration, sedimentation, and disinfection during the circulation. An air pipe 7a communicated with the blower 7 is provided to supply air necessary for circulation, aeration, and the like in the tank.

In the present embodiment, the septic tank 4 is
The surroundings are covered with a heat insulating material 4c and installed on the ground.

A water collecting pipe 8 communicated with the water collecting device 2c is provided in the middle of the water pipe 5 so that rainwater collected during rainfall flows into the pump tank 6. Has become.

A water discharge pipe 6 is provided on the upper side surface of the pump tank 6.
When the water level in the pump tank 6 exceeds the water discharge pipe 6b, excess water overflows from the water discharge pipe 6b.

A water pipe 10 is exposed to the bottom of the pump tank 6 via a water pump 9.
Is connected to a water supply port 11 a formed on the top surface of the water supply tank 11.

The water supply pump 9 is provided with, for example, a sensor for detecting a water level. The water supply pump 9 operates when the water level in the pump tub 6 exceeds a preset water level, and supplies the water stored in the tub. Water is supplied to the water tank 11. Of course, the water level at which the water pump 9 operates is set lower than the position where the water discharge pipe 6b communicates.

Further, a valve 12 for adjusting the flow rate of the water flowing through the water pipe 10 is provided in the middle of the water pipe 10.

The water supply tank 11 is installed on the slope A, and is located at a predetermined height from the mountain hut 2. A water supply port 1 is provided at the bottom of the water supply tank 11.
1b is formed, and the water supply port 11b is provided with a water supply pipe 13
Is connected to the upstream side of the toilets 2a and 2b via the. In addition, the water supply pipe 13 is formed to have a predetermined diameter or is formed of a small diameter pipe, and the flow rate of the washing water from the water supply tank 11 is restricted.

A drain 14 for sprinkling water stored in the water supply tank 11 is provided on the bottom surface of the water supply tank 11.
Is coming.

Further, the water supply tank 1 along the slope A
A water storage tank 15 for storing rainwater is installed at a place higher than 1, and the water storage tank 15 and the water supply tank 11 are communicated with each other through a water supply pipe 16. The inflow port of the water supply pipe 16 faces the bottom level (L, W, L) of the water storage tank 15, and extends partway upward and is bent at the upper level (H, W, L). , From the outside to the bottom of the water supply tank 11 below. When a predetermined amount of rainwater is stored in the water storage tank 15 by the so-called siphon principle, the water supply pipe 11 transmits the rainwater to the water supply tank 11.

Reference numeral 20 in the figure denotes a power supply unit. The power supply unit 20 generates power using natural energy and supplies power to at least the blower 7 and the water pump 9. In the present embodiment, the wind power generator 21 and the solar Both batteries 22 are employed.

The wind power generator 21 is provided with, for example, an outer rotor type power generator.
The battery 25 and the DC-AC inverter 26 are connected. The solar cell 22 is formed of, for example, a plurality of crystalline silicon power generating elements, and is connected to the battery 25 and the DC-AC inverter 26 via a controller 24.

The output side of the DC-AC inverter 26 is connected to the blower 7 and the water pump 9.

Next, the operation of the embodiment having the above configuration will be described.

In the power supply unit 20, when power is generated by the wind power generator 21 and the solar cell 22, the generated power is converted into DC power of, for example, 12V by the controllers 23 and 24, and further converted to DC-AC inverter. 26, for example, 1
After being converted to 00V AC power, it is output to the blower 7 and the water pump 9.

At this time, the surplus generated electric power is charged in the battery 25. When the power generation by the wind power generator 21 and the solar cell 22 is insufficient, the electric power is generated via the DC-AC inverter 26. Blower 7, water pump 9
Is output to

As described above, the power supply unit 20 according to the present embodiment generates power using two types of natural energy, ie, wind energy and solar energy. And the extra power generated is charged in the battery 25,
Stable power can always be obtained.

When power is supplied from the power supply unit 20, the blower 7 supplies air to the purification tank 4 through the air pipe 7a, and the blower 7 is stored in the purification tank 4 by the supplied air. Untreated water is circulated,
The bacteria living in the tank are activated.

The wastewater flowing into the septic tank 4 from the drain pipe 3 is circulated in the tank, and precipitates and separates during the circulation.
Purification treatment such as aeration, sedimentation, and disinfection is performed, and the treated water becomes clear treated water, flows out of the outlet 4b, and flows into the pump tank 6 through the water supply pipe 5.

In the pump tank 6, when the water level in the tank exceeds a preset water level, a water supply pump 9 is operated, and the water in the tank pumped up by the water supply pump 9 is supplied to the water supply pipe 1.
After passing through 0, the water flows into the water supply tank 11.

At this time, a large amount of water continues to flow from the water supply pipe 5, and the water level in the pump tank 6 is changed to the water discharge pipe 6b.
, The water that has passed through the water discharge pipe 6b is discharged.

The water flowing into the water supply tank 11 flows into the toilets 2a and 2b via the water supply pipe 13, and
a, 2b are washed. The water tank 11 is provided with the toilet 2
a and 2b, and the flow rate of the washing water flowing through the water supply pipe 13 is limited, so that the urinals 2a and 2b are flushed with a small amount of energized washing water. It can be washed efficiently.

Then, the washing water after washing the toilets 2a and 2b flows into the septic tank 4 again through the drain pipe 3.

As described above, in the wastewater treatment system 1 according to the present invention, the water treated in the purification tank 4 flows into the purification tank 4 again through the pump tank 9, the water supply tank 11, and the toilets 2a and 2b. The circulation is constantly repeated, and the toilets 2a and 2b are continuously washed. For this reason, the toilets 2a and 2b can always be kept clean without requiring a large amount of water.

By the way, in the wastewater treatment system 1 according to the present invention, at the time of rainfall, the rainwater falling on the roof of the mountain hut 2 is collected by the water collecting device 2c, and the rainwater is stored in the water storage tank 15.

The rainwater collected by the water collecting device 2c flows into the pump tank 6 through the water collecting pipe 8 and the water supply pipe 5. Of course, also at this time, the treated water purified in the purification tank 4 continues to flow into the pump tank 6 via the water supply pipe 5, and in the pump tank 6, the treated water is diluted by the rainwater. You.

In the water storage tank 15, rainwater is stored, and when the water level in the tank rises, the water level in the water pipe 16 facing the water storage tank 15 also rises. When the water level in the water pipe 16 reaches H, W, and L, the water in the water pipe 16 becomes priming water, and the rainwater stored in the water storage tank 15 flows into the water supply tank 11 at a stretch.

From the water storage tank 15 to the water supply tank 11
The water supply to the water storage tank 15 continues until the water level in the water storage tank 15 reaches L, W, L, and a large amount of rainwater flows into the water supply tank 11 at one time.

Further, the rainwater flowing into the water supply tank 11 flows into the toilet bowls 2a, 2b, and at this time, the rainwater urged by the height difference from the water storage tank 15 to the toilet bowls 2a, 2b is used. Thus, the toilets 2a and 2b are
Strongly washed.

Further, the rainwater that has washed the toilet bowls 2a and 2b flows into the septic tank 4 and dilutes the water to be treated in the septic tank 4.

As described above, in the wastewater treatment system 1 according to the present invention, the washing water circulating in the system is appropriately diluted by the rainwater taken in by the water collecting device 2c and the water storage tank 15. Therefore, sodium chloride contained in night soil and the like and accumulated in the washing water is diluted, and the bacteria can be maintained in an active state. In particular, since a large amount of rainwater flows at once from the water storage tank 15, the sodium chloride in the septic tank 4 can be efficiently diluted.

The rainwater contains a large amount of oxygen, and the activation of bacteria in the purification tank 4 can be promoted by the rainwater taken in from the water collecting device 2c and the water storage tank 15.

When the wastewater treatment system 1 is provided in a place where snow is heavy in winter and people cannot enter, the drains 14 and 17 are appropriately opened to drain water other than the septic tank 4. By doing so, it is possible to prevent rupture of each tube due to freezing in winter. Of course, even in such a case, the blower 7 continues to operate and the bacteria in the septic tank 4 continue to be activated.
Can maintain the purifying ability.

[0050]

As described above, according to the present invention,
In order to supply air to the septic tank and circulate through the tank, the necessary power is secured by power generation using natural energy, and the treated water treated in the septic tank is used again as washing water. Even in a place where the amount of water or the like is limited, the wastewater treatment capacity can be sufficiently maintained.

Furthermore, during rainfall, rainwater is collected and supplied to the septic tank to dilute sodium chloride and maintain the active state of bacteria in the septic tank.

[Brief description of the drawings]

FIG. 1 is an overall schematic diagram of a wastewater treatment system.

[Explanation of symbols]

 Reference Signs List 1 wastewater treatment system 2a, 2b toilet (drainage source) 4 septic tank 6 pump tank 7 blower (air supply means) 9 water supply pump (circulation means) 11 water supply tank 15 water storage tank 20 power supply unit

Claims (2)

[Claims] 1. A water supply tank for supplying washing water to a sewage collection unit, a septic tank for treating sewage discharged from the sewage collection unit, and a pump tank for circulating treated water treated in the clarification tank to the water supply tank. Constitute a circulation system for washing water, and generate electricity based on natural energy.
A wastewater treatment system comprising: a power supply unit that supplies power to an air supply unit that supplies air to the septic tank and a circulation unit that circulates the circulation system. 2. A water supply tank for supplying cleaning water to a sewage collection unit, a purification tank for treating sewage discharged from the sewage collection unit, and a pump tank for circulating treated water treated in the purification tank to the water supply tank. Constitute a circulation system for washing water, and generate electricity based on natural energy.
An air supply unit that supplies air to the septic tank, and a power supply unit that supplies power to a circulating unit that circulates the circulation system, further comprising a water tank that stores rainwater above the water tank, A wastewater treatment system, wherein the water supply tank and the water storage tank communicate with each other through a curved pipe having one end facing a bottom surface of the water storage tank.