JP2508406Y2 - Aeration type septic tank - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an aeration-type septic tank, and more particularly to an aeration-type septic tank having an improved disinfection chamber downstream of the aeration chamber.

[Conventional technology]

BACKGROUND ART A septic tank for treating domestic wastewater such as human waste, which is installed in a general household, an apartment house, a public facility, etc., aerobically sterilizes the water to be treated and aerobically performs microbial treatment.

However, since bile oxides, which are a coloring substance peculiar to human waste, and brown components of humic compounds cannot be removed only by microbial treatment, currently used septic tanks have a disinfection chamber at the downstream side of the aeration chamber. A chlorine-based chemical is provided in the disinfection chamber to sterilize and disinfect treated water that has undergone microbial treatment to deodorize and decolorize it.

[Problems to be solved by the device]

However, the chemicals that are placed in the disinfection room gradually wear out with the passage of time, so it is usually necessary to replenish the chemicals with new chemicals approximately every three months, which makes maintenance of the septic tank troublesome. It was hanging.

In addition, since the amount of human waste flowing into the septic tank is not constant and changes every day or night or every day, the quality of treated water after aeration in the septic tank also changes. On the other hand, since the amount of the drug dropped is constant from beginning to end, sterilization, deodorization, and decolorization become insufficient when an excessive processing load is applied, and the drug is wasted when the load is reduced. It will be consumed.

The inventors of the present invention have conducted an earnest study for the purpose of developing an aeration-type septic tank that can easily cope with load fluctuations of the treated water in the septic tank without requiring maintenance and maintenance. The present invention was completed by focusing on the fact that the oxidation treatment with ozone gas is effective for sterilization, deodorization and decolorization, and that the amount of air required for ozone treatment is extremely small compared to the amount of air for aeration. It came to do.

Configuration of the Invention [Means for Solving the Problems] In order to achieve the above object, the aeration-type septic tank of the present invention is provided with an air tank partitioned by an partition into an air chamber and an ozone chamber, and the ozone chamber is provided with an ozonizer. At the same time, the partition is provided with an air amount adjusting unit so that a part of the aeration air can be supplied to the ozonizer, the ozone generated by the ozonizer is introduced into the disinfection chamber, and the water to be treated is sterilized to solve the problem. In addition, an ozonizer is attached to the aeration-type septic tank so that a part of the aeration air can be supplied to the ozonizer, a valve means is interposed in the air line leading to the ozonizer, and the disinfection chamber is provided. A sensor is provided, and ozone generated by the ozonizer is introduced into the disinfection chamber while controlling the valve means by the output signal of the sensor, and the object to be treated is treated. By the sterilizing treatment, and is obtained by solving the problems.

[Action]

In the device according to claim (1), the water to be treated introduced into the septic tank is subjected to aerobic treatment with microorganisms in the aeration chamber, and then deodorized and decolorized with ozone supplied from the ozonizer in the disinfection chamber. It is sterilized and discharged. Only a small amount of air set by the air amount adjusting unit flows into the ozone chamber in the air tank.

Further, in the invention as set forth in claim (2), any one of turbidity, chromaticity and bacterial concentration of purified wastewater immediately before discharge is detected by a sensor, and the valve means is opened based on the measured value. Control the temperature and increase or decrease the ozone concentration in the disinfection chamber.

〔Example〕

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a sectional view showing an embodiment of the invention described in claim (1), and FIG. 2 is a flow chart showing the embodiment of the invention described in claim (2) with the septic tank omitted. is there.

In FIG. 1, the septic tank 10 has two precipitation separation chambers 12, 1
4, divided into aeration chamber 16 and disinfection chamber 18, aeration chamber 1
The 6 and the disinfection chamber 18 are provided with air diffusers 22 and 24, respectively.

The air tank 30 is an air throttle valve that is installed in the approximate center.
A partition wall having 32 partitions the air chamber 34 and the ozone chamber 36 into which the aeration air is introduced from the blower 40, and the aeration chamber 16 is passed through an air line 42 that serves as an air supply path to the aeration chamber. Of the disinfection chamber 18 via the ozone supply line 44 branched from the air line 42.
Connected to 24. The ozonizer 46 is a known one that generates required ozone by changing the discharge voltage or the discharge frequency.

 Next, the operation of this embodiment will be described.

The waste sewage wastewater A introduced into the septic tank 10 is stored in the precipitation separation chamber 12,
After the solid matter and the like are separated in 14, it enters the aeration chamber 16 and is aerobically treated by microorganisms.

The water to be treated which has been subjected to the microbial treatment is then fed to the disinfection room 18
Enters and is treated with ozone.

Ozone is a gas with a strong oxidizing power, and it can be continuously generated using air as a raw material only with electric power, deodorizing and decolorizing human waste water, oxidizing pollutants in waste water, sterilizing pathogenic bacteria, and , Inactivate the virus.

Since only a small amount of air is required for ozone treatment, the throttle valve 32 provided in the air tank 30 is configured so that only a small amount of air flows into the ozone chamber 36.

The treated wastewater B which has been subjected to the ozone treatment is discharged to the outside of the system.

Next, an embodiment of the invention according to claim (2) will be described with reference to FIG.

An ozone supply line 44 is branched from an air line 42 for sending aeration air from the blower 40 to the aeration pipe 22 of the aeration chamber 16, and a three-way solenoid valve 50 is provided in the line 44, and an ozonizer is provided downstream thereof. Deploy 46. The ozone supply line 44 passing through the ozonizer 46 is connected to the air diffusing pipe 24 of the disinfection chamber 18, which is the same as the above embodiment.

The control unit 52 is continuously subjected to ozone treatment in the disinfection chamber 18, and the measured values detected by the sensor 54 installed in the treated water immediately before the discharge are continuously input, and the solenoid valve 50 and the ozonizer are continuously input.
By sending a control signal to 46, the opening / closing operation of the solenoid valve 50 and the start / stop operation of the ozonizer 46 are controlled.

In the embodiment of this invention, the turbidity, chromaticity or bacterial concentration of the treated wastewater immediately before discharge is detected by the sensor 54, and when these are above a specified value, the solenoid valve 50 is opened and the ozonizer 46 is activated. To start. On the contrary, when they are below the specified value, the solenoid valve 50 is closed and the operation of the ozonizer 46 is stopped.

Effect of the Invention According to the invention described in claim (1), a part of the aeration air is supplied to the ozone chamber equipped with the ozonizer through the air amount adjusting unit, and the generated ozone is introduced into the disinfection chamber to be treated. Since the water is sterilized, the device configuration is simple, and the human waste wastewater can be easily sterilized, deodorized, and decolorized, and maintenance is not troublesome.

Further, in the invention according to claim (2), the valve means is interposed in the air line reaching the ozonizer, and the valve means is controlled by the detection signal output from the sensor provided in the disinfection chamber. There is a remarkable effect that the air supply amount can be adjusted according to the load fluctuation of the water to be treated flowing into the septic tank, and the domestic wastewater can be efficiently treated.

[Brief description of drawings]

The drawing shows an aeration type septic tank according to the present invention.
FIG. 1 is a sectional view showing an embodiment of the invention described in claim (1), and FIG. 2 is a flow chart showing the embodiment of the invention described in claim (2) with the septic tank omitted. 10 …… septic tank, 16 …… aeration chamber 18 …… disinfection chamber, 30 …… air tank 32 …… throttle valve, 40 …… blower 42 …… air line, 44 …… ozone supply line 46 …… ozonizer, 50 …… 3-way solenoid valve 54 …… Sensor

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location C02F 1/50 550 C02F 1/50 550D 560 560H 1/78 1/78 3/00 3/00 E

Claims (2)

(57) [Scope of utility model registration request] 1. An aeration chamber for aerobically treating microorganisms by aeration of water to be treated such as human waste, and an aeration-type septic tank having a disinfection chamber downstream of the aeration chamber. An ozone tank provided in the ozone chamber is provided, and the ozone chamber is provided with an ozonizer, and the partition wall is provided with an air amount adjusting part, so that a part of the aeration air can be supplied to the ozonizer, and the ozone generated by the ozonizer is aforesaid. An aeration type septic tank that is introduced into the disinfection room and sterilizes the water to be treated. 2. An aeration chamber for aerobically treating microorganisms by aeration of water to be treated such as human waste, and an aeration-type septic tank provided with a disinfection chamber at a position downstream of the aeration chamber, wherein Along with an ozonizer, part of the aeration air can be supplied to the ozonizer, a valve means is interposed in the air line leading to the ozonizer, and a sensor is provided in the disinfection chamber, and the output signal of the sensor is provided. An aeration-type septic tank that introduces ozone generated by the ozonizer into the disinfection chamber while controlling the valve means to sterilize the water to be treated.