JPH0978655A - Sewage treatment device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To promote oxidation by heating and pressing sewage, and to quicken subsequent sewage treatment by taking sewage into an adiabatic compression device together with air and adiabatically compressing the mixture. SOLUTION: When a solenoid valve 1ba for a stool, a solenoid valve 2a for a sewage suction tank and a butterfly valve 4b are closed and an adiabatic compression device 4 is driven, air in the sewage suction tank 2 is sucked and reaches negative pressure, and filth and water are sucked from a condtuit to the sewage suction tank. The sewage is drawn to air and taken into the adiabatic compressed device 4 at every small quantity, introduced into a reservoir 6 through an exhaust pipe 4j, and adiabatically compressed, sewage at a high temperature is brought into contact with a rotating muffler 5 while moisture is evaporated, moisture is further evaporated and is elevated in a chimney 7, and solid bodies adhere to the external cylinder of the muffler 5. The solid bodies are scraped off on the opposite side of the reservoir 6, and collected on a pan 10.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a device for treating sewage (mixture of filth and water) such as human feces and urine.

[Prior Art] Conventionally, filth is once stored in a filth tank, decomposed by bacteria in a so-called septic tank, and then discharged to the outside, or transferred to an external treatment facility called scrap removal. Alternatively, in the case of the independent type, there is a type in which the evaporation of moisture in the waste is promoted by electric heating and stirring, and the solid matter is reduced to a small amount by drying, and cleaning is performed for a certain period.

[Problems to be Solved by the Invention] In the former case, the installation of a septic tank is large, and it takes a long time to complete the decomposition treatment by bacteria. The latter stand-alone type requires electric power and the processing time is not satisfactory. In addition, regular cleaning is necessary. Also, some flush-type toilets are used for flushing water by mixing disinfectant with disinfectant, but it feels dirty in use.

[Means for Solving the Problems] By using the negative pressure generated when the adiabatic compression device is driven, the dirty water in the toilet bowl is once pumped into the dirty water suction tank, so that the use of flush water can be minimized. After that, the sewage is taken into the adiabatic compression device together with air to perform adiabatic compression, thereby promoting oxidization of the sewage by heating and pressurizing it, and eliminating and deodorizing the sewage, and facilitating subsequent treatment. It becomes possible. In addition, after that, the evaporated water is cooled, collected, and reused as water for washing, so that a hygienic treatment becomes possible.

[Use] The compression adiabatic device used in the present invention achieves adiabatic compression by using the mechanism of a normal two-cycle engine, and thereby achieves sterile deodorization. The same effect can be obtained with a similar four-cycle engine or rotary engine used in automobiles and motorcycles.

[Embodiment 1] FIG. 1 shows an embodiment of the present invention. Broken line part 1
Is a toilet, 1a foot switch is inside, 1b is a toilet bowl, 1ba is an electromagnetic valve of the toilet bowl, 1c is a water tank, 1
ca is a lever, 1 cb is a float, 1 cc is a solenoid valve of a water tank, and 1 cd is a water supply pipe. A sewage suction tank 2 is provided above the toilet bowl 1b, and a lead pipe 3 is connected between them. Reference numeral 2 is a sewage suction tank, 2a is a solenoid valve of the sewage suction tank, 2b is a connecting pipe, one of which is connected to the vicinity of the bottom of the sewage suction tank 2 and the other of which is connected to the intake side venturi 4a of the adiabatic compressor 4. 4 is an adiabatic compressor, 4a is a venturi, 4b is a butterfly valve, and 4j is an exhaust nozzle. Reference numeral 5 is a receiving reservoir, 6 is a muffler of the internal combustion engine which rotates the driving force of the internal combustion engine by a driving means (not shown), and 7 is a chimney.
Reference numeral 8 is a water reservoir and 8a is an overflow pipe. Further, 9 is an exhaust port and 10 is a saucer. Next, the operation will be described. First, when a person enters the toilet 1, the foot switch 1a is stepped on. Then, the internal combustion engine (not shown) is rotated by the starter motor and ignited by the power source of the battery (not shown), and the self-sustaining operation is started. After that, the clutch that connects the adiabatic compression device 4 is inserted and the adiabatic compression device 4 is driven. At this time, the solenoid valve 1ba of the toilet bowl, the solenoid valve 2a of the dirty water suction tank, and the butterfly valve 4b are all closed. As a result, the air in the dirty water suction tank 2 is sucked to a negative pressure. When a person adds pressure and pushes the lever 1ca, the float 1cb in the water tank 1c, which is filled with cleaning water in advance, floats up and the water in the toilet cleans the inside of the toilet 1b.
a is opened, and the negative pressure in the sewage suction tank causes the filth and water to be sucked into the sewage suction tank 2 through the introduction pipe. After the suction is completed, the electromagnetic valve 1ba of the toilet is closed, and the electromagnetic valve 2a and the butterfly valve 4b of the dirty water suction tank are opened. Then, the sewage in the sewage suction tank 2 is drawn by the air sucked by the action of the venturi 4a through the connecting pipe 2b, and is taken into the adiabatic compression device 5 little by little.
This adiabatic compressor has a capacity of two cycles of 100 cc and a compression ratio of 10 or more. When the outside air temperature is 20 ° C., the adiabatic compressed air has the ability to rise to a maximum of about 460 ° C. For example, assuming that 1000 cc of sewage is generated by using the toilet once, the amount of sewage that is sucked together with air in one stroke of the adiabatic compression cycle is set to a very small amount of 5 cc so as not to lower the temperature during adiabatic compression. , 200
If the suction is performed twice, the sewage in the sewage suction tank 2 is treated, and therefore 200 rotations are sufficient. Normally, the engine speed when idling is 500
r. p. Since it is about m, the processing is completed within about 30 seconds even at such a rotation speed. After passing through the exhaust pipe 4j from the adiabatic compression device 5 and being guided to the receiving reservoir 6 by adiabatic compression,
The moisture in the high temperature sewage evaporates while it touches the rotating muffler 5.
Inside, the solid matter adheres to the outer cylinder of the muffler 5 and rotates, and is scraped off on the side opposite to the reservoir 6 and stored in the tray 10. Further, the evaporated moisture rises inside the chimney 7, and when it passes by the suction and the sewage suction tank 2 cooled by adiabatic expansion, it adheres as a water drop and accumulates in the water sump 8. The water accumulated above a certain level is discharged to the outside through the overflow pipe 8a. The exhaust gas that has been drained of water and dried is discharged to the outside through the exhaust port 9. Thus, when discharged to the outside, the wastewater is separated into dried solid matter, distilled water, and gas. Further, the water collected in the water reservoir 8 is opened when the solenoid valve 1cc of the water tank is opened.
After getting off cd, the water is stored in the water tank 1c in the toilet 1 as cleaning water. The adiabatic compression device 4 is driven until the wastewater accumulated in the receiving reservoir 6 is separated into almost solid dry solids,
After that, the electromagnetic valve 2a and the butterfly valve 4b of the filth suction tank are closed to stop the driving of the internal combustion engine. These series of operations are controlled by the microcomputer.

[Embodiment 2] FIG. 2 shows another embodiment. What is different from FIG. 1 will be described. The connection pipe 2b connecting the sewage suction tank 2 to the venturi 4a is connected at the top of the sewage suction tank 2 side and has a solenoid valve 2ba of the connection pipe.
On the other hand, below the sewage suction tank 2, there is a communication pipe 2c connected to the sewage sump 12 and its solenoid valve 2ca. Reference numeral 11 is an internal combustion engine itself, and 4b is a carburetor slot valve. The exhaust nozzle 4j is guided to the rotating muffler 5. Reference numeral 5a is an exhaust pipe that penetrates the waste water reservoir 12 from the end of the rotating muffler 5 and is connected to the outside. A part of the exhaust port 9 is connected to the intake side venturi 4a of the internal combustion engine. Next, the operation will be described. First, when a person enters the toilet 1, the foot switch 1a is stepped on. Then, the internal combustion engine 11 is rotated and ignited by the starter motor (not shown) by the power source of the battery (not shown), and the self-sustained operation is started. At this time, the solenoid valve 1ba of the toilet, the solenoid valve 2a of the dirty water suction tank, and the solenoid valve 2ca of the connecting pipe are closed.
Only the solenoid valve 2ba between the connections is open. As a result, the air in the dirty water suction tank 2 is sucked to a negative pressure. When a person puts on a need and pushes the lever 1ca, the float 1cb in the water tank 1c, which is filled with washing water in advance, floats and the water in the toilet flushes the inside of the toilet 1b.
Is opened, and the negative pressure in the dirty water suction tank 2 causes the dirty water to be sucked into the dirty water suction tank 2 through the introduction pipe 3. When suction is completed, the solenoid valve 1ba of the toilet bowl and the solenoid valve 2c of the connecting pipe
a is closed, and the solenoid valve 2a of the dirty water suction tank and the solenoid valve 2ca of the connecting pipe are opened. Then this is the sewage suction tank 2
The sewage therein passes through the solenoid valve 2ca of the connecting pipe and drops to the sewage reservoir 12. When the wastewater is further gradually dropped from the wastewater sump 12 to the receiving sump 6, the wastewater is heated by the gas in the exhaust pipe 5a penetrating the wastewater sump 12 and the chimney 7 outside. While the moisture in the high temperature sewage evaporates, touching the rotating muffler 5 causes the moisture to further rise in the chimney 7 as vapor, and the solid matter will adhere to the outer cylinder of the muffler 5 and rotate. It is scraped off on the opposite side of the pan 6, and the pan 10
Stored in. Further, the evaporated moisture rises inside the chimney 7, and when it is sucked and passes by the sewage suction tank 2 cooled by adiabatic expansion, it adheres as water drops and accumulates in the water reservoir 8.
Accumulate in. The water accumulated above a certain level overflows 8a
Is discharged to the outside through. The exhaust gas that has been drained of water and dried is discharged to the outside through the exhaust port 9. Thus, when discharged to the outside, the wastewater is separated into dried solid matter, distilled water, and gas. A part or all of this gas can be taken into the intake air of the internal combustion engine 11 and burned in the internal combustion engine 11 to completely treat the odor.
The water collected in the water reservoir 8 is the solenoid valve 1 of the water tank.
When cc is opened, it descends from the water supply pipe 1cd and is stored in the water tank 1c in the toilet 1 as cleaning water. The internal combustion engine is driven until the wastewater collected in the receiving reservoir 6 is separated into almost water and dry solid matter. These series of operations are controlled by the microcomputer. In Example 1, the adiabatic compression device and the internal combustion engine may be integrated. In this case, the device becomes more compact and the heat of the internal combustion engine is transferred to the adiabatic compression device, so that the heating of the sewage is further promoted. Further, a structure may be used in which fuel is added to the air mixed in the adiabatic compression device to ignite and burn in the adiabatic compression device. Further, a structure may be adopted in which the intake valve and the exhaust valve reciprocate while rotating in order to prevent the waste from accumulating between the intake valve and the exhaust valve of the adiabatic compression device and the valve seat and reducing the compression efficiency. Complete combustion may be performed by reintroducing part or all of the exhaust gas from the adiabatic compression device into the intake air of the driving internal combustion engine. In the second embodiment, by increasing the airtightness of the chimney 7, it is possible to lower the internal pressure of the chimney 7 by the intake action of the internal combustion engine. By doing so, the boiling point is promoted to promote further evaporation of water, thereby improving the processing capacity.
In addition, in order to improve the heat exchange efficiency of the exhaust gas and the dirty water, it is also effective to devise a surface area such as fins or grooves in each flow path. In either embodiment, the foot switch may be an infrared sensor or the like that detects when a person enters the toilet. A blade-shaped member may be provided in the introduction pipe or in the sewage suction tank to promote stirring of the filth and the washing water. Further, if the structure is such that the waste water comes into contact with the exhaust gas of the internal combustion engine inside the rotating muffler, the effect of separation is further enhanced. By changing the amount of flush water used for rinsing or stool, and using the minimum amount of flush water,
It has the effect of increasing the processing speed. [Effects of the Invention] By mixing adiabatic matter and air for adiabatic compression, thermal decomposition can be performed, odor and fermentation peculiar to the sewage can be eliminated, evaporation of water due to heating can be promoted, and subsequent processing can be facilitated. it can. Further, since the filth is sucked up in a vacuum, a small amount of water for washing can be used. As a result, solid matter and water can be easily separated, so that the above-mentioned processing can be performed at high speed. With the above device, it is possible to compactly integrate it as a temporary toilet or an independent toilet such as a camper van, it can be used continuously for a long time only by refueling, and installation in a place without electricity Is also possible easily.

[Brief description of drawings]

1, 1 is a toilet, 2 is a sewage suction tank, 4 is an adiabatic compression device, 5 is a muffler, and 11 is an internal combustion engine in FIG.
12 is the waste water reservoir

Claims (1)

[Claims] 1. A sewage treatment tank characterized by using a sewage suction tank for temporarily sucking and holding sewage in a toilet with negative pressure, and an adiabatic compression device or an internal combustion engine as means for generating the negative pressure. apparatus.