JPS588308B2 - Pre-aeration device for the flow rate adjustment tank of human waste purification equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention connects a small diameter pipe 2 to the lower end of a large diameter pipe 1 whose upper part communicates with the atmosphere, and arranges this small diameter pipe 2 in a flow rate adjustment tank 3. This invention relates to a preliminary aeration device for a flow rate regulating tank of a night soil purification device, characterized in that a submersible pump 4 for introducing the sewage in the tank 3 into the large diameter pipe 1 is disposed in the sewage in the flow rate regulating tank 3. The purpose is to create a human waste purification system that does not require large-scale equipment for preliminary aeration, has a large preliminary aeration effect, and can prevent wastewater from being sold in the flow rate adjustment tank. To provide preliminary aeration equipment for flow rate regulating tanks.

A typical human waste purification device is shown in FIG.

That is, the human waste settles sand and the like in the settling chamber 5, and then passes through the screen section 6 into the flow rate adjustment tank 3, and is further sent to the aeration tank 7 while the flow rate is adjusted.

The sewage is aerated by an aeration blower 8 in an aeration tank 7, and then advected to a settling tank 9, where precipitates are precipitated, and the supernatant liquid is sent to a disinfection tank 10 for disinfection, and then discharged from a discharge tank 11. It is.

Here, when preliminary aeration is performed in the flow rate adjustment tank '3, a preliminary aeration blower 12 has conventionally been installed.

This equipment requires high equipment costs, increases maintenance costs such as electricity costs, and is troublesome to maintain.

The present invention was invented in view of the above-mentioned points, and the present invention will be explained in detail below with reference to Examples.

In the figure, reference numeral 13 denotes an air supply pipe, the upper part of which is a large diameter pipe 1, the lower part a small diameter pipe 2, etc., and the upper end of the large diameter pipe 1 communicates with an air supply louver 14.

This air supply pipe 13 is attached to the ceiling 15 of the flow rate adjustment tank 3 so that the air supply louver 14 protrudes to the outside, and the lower end of the small diameter pipe 2 is located below the surface of the wastewater in the flow rate adjustment tank 3. .

The sewage that has flowed into the flow rate adjustment tank 3 is advected by the submersible pump 4 through the pipe 15 to the metering box 16, and a fixed amount is sent to the aeration tank 9.

In this case, the submersible pump 4 is configured to be capable of pumping water in an amount larger than the fixed amount of water advected to the aeration tank 9.

The pipe 15 is branched into a bypass pipe 17, and the tip of the bypass pipe 17 is introduced into the large diameter pipe 1 of the air supply pipe 13.

Therefore, out of the sewage pumped by the submersible pump 14, the amount of sewage that exceeds a certain amount to be sent to the aeration tank 9 is sent into the air supply pipe 13 via the bypass pipe 17.

The sewage sent into the air supply pipe 13 flows from the large diameter pipe 1 into the small diameter pipe 2, but it becomes a jet in the small diameter pipe 2, and like an aspirator, the air that enters the air supply pipe 13 from the air supply louver 14 is The sewage and air are mixed in the small diameter pipe 2 and fall into the sewage in the flow rate regulating tank 3 for preliminary aeration.

Incidentally, if the small diameter pipe 2 and the submersible pump 4 are positioned diagonally with respect to the flow rate adjustment tank 3, the human waste in the flow rate adjustment tank 3 can be evenly stirred.

As described above, the present invention connects a small-diameter pipe to the lower end of a large-diameter pipe whose upper part communicates with the atmosphere, arranges the small-diameter pipe in a flow rate regulating tank, and directs wastewater in the flow rate regulating tank into the large diameter pipe. Since the submersible pump for introduction is installed in the wastewater of the flow rate adjustment tank, there is no need for large-scale equipment such as a blower to perform preliminary aeration. It has the advantage of being able to reduce equipment costs.

Also, since large diameter pipes communicate with the atmosphere, they have the advantage of being able to take in fresher air than from the atmosphere and have a greater aeration effect. It is capable of sufficiently mixing human waste and air and increasing the aeration effect.

Moreover, since a submersible pump is installed in the wastewater of the flow rate adjustment tank to introduce the wastewater in the flow rate adjustment tank into the large diameter pipe, the wastewater can be circulated between the air supply pipe and the flow rate adjustment tank. This method has the advantage that the wastewater in the flow rate regulating tank can be sufficiently agitated and spoilage of the wastewater can be prevented.

[Brief explanation of the drawing]

FIG. 1 is a schematic front sectional view of an embodiment of the present invention, and FIG. 2 is a schematic top sectional view of a conventional example, in which 1 is a large diameter pipe, 2 is a small diameter pipe, 3 is a flow rate adjustment tank, and 4 is an underwater It's a pump.

Claims (1)

[Claims] 1 A submersible pump that connects a small diameter pipe to the lower end of a large diameter pipe whose upper part communicates with the atmosphere, places this small diameter pipe in a flow rate adjustment tank, and introduces wastewater from the flow rate adjustment tank into the large diameter pipe. A preliminary aeration device for a flow rate adjustment tank of a night soil purification device, characterized in that the device is provided in the wastewater of the flow rate adjustment tank.