JPS63278594A - Flow controller for compact joint septic tank - Google Patents

Abstract

PURPOSE:To surely control the flow rate by positioning the open end of the inflow pipe penetrating a preliminary tank filter and an aeration tank in the preliminary tank filter below the normal liq. level. CONSTITUTION:The liq. in the preliminary tank filter 1 flows into the aeration tank 2 through an inflow port 6, inflow pipes 7 and 5, and an outflow pipe 10, and the liq. level A is maintained. Since the liq. in the preliminary tank filter 1 flows in from the inflow port 6 positioned below the liq. level A, the flowing of the solid matter suspended at the liq. level A into the inflow pipe 7 is prevented. When the liq. quantity in the preliminary tank filter 1 is increased and the level rises to an abnormal liq. level B, the liq. flows into the aeration tank 2 through a bypass pipe 9, a riser pipe 8, the inflow pipe 5, and the outflow pipe 10, and the level returns to normal. By this method, the overflowing of the liq. in the tank filter can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a flow rate regulating device for a small combined treatment septic tank, which is installed between an anaerobic filter bed and an aerobic filter bed in a septic tank.

[Background of the invention]

In conventional hut combined treatment septic tanks, the water inside the preliminary filtration tank is connected to the partition wall that separates the preliminary filtration tank and the aeration tank through more than 100 diameters or multiple pipes with different diameters or more than 100 openings. Sewage is allowed to flow into the aeration tank. However, this ↓Una configuration has a highly efficient purification ability in the aeration tank.

is not obtained, so the solids floating in the upper part of the small combined treatment septic tank, that is, the preliminary filtration tank, enter the above piping ii! i
The problem is that it is difficult to adjust the flow rate easily and effectively.

(Objective of the Invention) The present invention has been made by focusing on such conventional problems, and it is possible to effectively transfer the wastewater in the preliminary filtration tank to the aeration tank on average without being affected by floating matter in the tank. It is an object of the present invention to provide a flow rate adjustment device for a small-sized combined treatment septic tank that allows the flow of water.

[Embodiments of the invention]

The present invention will be explained in detail below based on embodiments shown in the drawings.

Example 1 In FIG. 1, 1 is the final pk of an anaerobic filter bed (hereinafter referred to as a preliminary filtration tank) in a small-scale combined treatment septic tank, and 2 is an aerobic filter bed (hereinafter referred to as an aeration tank) separated by a partition wall 6. At the inner bottom of this aeration tank 2, a shelf 4 for stacking and holding 1 ft of contact material (not shown) is formed. Although these processing tanks are not directly related to this embodiment, their illustrations are omitted. Reference numeral 5 denotes an advection pipe that penetrates the partition wall 6, and the advection pipe 5 has a preliminary filtration tank. An inflow [7] having an inflow port 6 located below the position of the advection pipe 5 is connected to the first end.

Further, at the end of the advection tube 5 on the preliminary filtration tank side, the advection tube 5
The riser pipe 8 rises above the position of
A bypass pipe 9 extending downward from the upper end to a position above and below the inlet port 6 of the inflow pipe 7 is connected. Further, an outflow pipe 10 extending below the shelf 4 described above is connected to the end of the advection pipe 5 on the side of the aeration tank. In addition, the inlet port 6 of the inflow pipe 7 has a nozzle diameter that corresponds to the target flow rate and is adjusted accordingly. It is now possible to adjust l.

Next, to describe its effect, the liquid in the preliminary filtration tank 1 is
The water flows into the aeration tank 2 through the inlet 6, inflow pipe 7, inflow pipe 5, and outflow pipe 10, and is normally maintained at water level A. Since the liquid in the preliminary filtration tank 1 flows into the inlet 6 located below the water level A, the solids suspended at the water level A do not flow into the inflow pipe 7. , the inflow pipe 7 will not be clogged. The heights A and B are set in anticipation of inflows occurring at the same time as washing, bathing, cooking, etc. However, if the amount of liquid in the preliminary filtration tank 1 increases more than expected and reaches an abnormal water level B, the bypass will occur. The water flows into the aeration tank 2 through the pipe 9, riser pipe 8, inflow pipe 5, and outflow pipe 10, and as a result, the water level returns to the normal water level between A and B.

Therefore, according to this embodiment, since the inlet 6 provided in the preliminary filtration tank 1 is provided below the normal water level A of the preliminary filtration tank 1, the water level A of the preliminary filtration tank 1 is Solids suspended on the surface do not enter through the inlet 6, thereby preventing the inlet t7 from becoming clogged. For example, even if this inflow pipe 7 is clogged, the bypass pipe 9
As a result of this action, the liquid in the preliminary filtration tank 1 can flow into the aeration tank 2, thereby making it possible to prevent an accident in which the preliminary filtration tank 1 is filled with water. 6
The tips of pipes 9 and 9 are located 15- or more below the water level A, and the length of pipe 10 is determined depending on the purification efficiency between 15'ff+ below the water surface A and the lower part of the shelf mentioned above. Note that in tank 2, the water level is always A because the amount of water that has flowed into the tank is naturally pushed out and transferred to the next tank.

Embodiment■ In Fig. 2, this embodiment uses an outflow pipe 10 exclusively for bypass.
' is installed in the aeration tank 2. That is, in the embodiment described above, the outflow W10 is also connected to the bypass pipe 9 and serves as both normal flowing water and bypass flowing water, but in this embodiment, the outflow pipe 1α exclusively for bypass is connected to the bypass pipe 9. is installed in the aeration tank 2 together with the outflow pipe 10.

Therefore, according to this embodiment, for example, even if a blockage occurs inside the outflow pipe 10, the effect of the outflow pipe 10' can prevent an accident of filling the preliminary filtration tank 1 with water. . The water levels in the two tanks were as described above in Example 1.

[Summary of the invention]

As described above, the present invention is a flow rate adjustment device for a small combined treatment septic tank, in which the opening end on the preliminary filtration tank side of the inflow pipe that penetrates the preliminary filtration tank and the aeration tank is located below the normal water level, and The opening end on the aeration tank side is located between 15Crn below the water level in the aeration tank and the lower part of the nine shelves installed at the bottom, and the through pipe is installed between the preliminary filtration tank and the aeration tank. This is also a flow rate adjustment device for a small-sized combined treatment septic tank characterized by having bypass pipes 8 and 9 whose topmost parts are located at a high position.

〔Effect of the invention〕

Therefore, this small combined treatment septic tank using a flow control device has perfect aeration efficiency, and the inlet of the pipe flowing from the pre-filtration tank to the aeration tank is set below the water level of the pre-filtration tank. This prevents solid matter floating on the water surface of the preliminary filtration tank from being sucked in through the suction port, thereby making it possible to prevent pipe clogging. Furthermore, by providing a bypass pipe between the preliminary filtration tank and the aeration tank, even if the water level in the preliminary filtration tank rises, it is possible to prevent the preliminary filtration tank from becoming full of water. .

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of only the essential parts showing the first embodiment of a small-sized combined treatment septic tank according to the present invention, and FIG. 2 is an explanatory diagram of only the essential parts of the second embodiment. 1... Pre-filtration tank 2... Aeration tank 6... Partition wall 4... Shelf 5... Penetration pipe
6...Inflow lower...Inflow pipe 8...
Rising pipe 9... Bypass pipe 10... Outflow pipe 1α... Outflow pipe

Claims (1)

[Claims] The flow rate flowing into the final tank of the anaerobic filter bed (hereinafter referred to as the preliminary filtration tank) and the first tank of the aerobic filter bed (hereinafter referred to as the aeration tank) in a small combined treatment septic tank is adjusted as planned, and the flow rate is maintained for a long time. The opening end on the side of the preliminary filtration tank is positioned below the normal water level using a method of transferring the water through the aeration tank, and an adjustment nozzle is provided at the inlet at the tip to transfer the desired amount of water. The open end is located below the average water level of 15 cm or less in the aeration tank or below the shelf provided at the bottom, and further below the installation position of the through pipe (advection pipe) between the preliminary filtration tank and the aeration tank. A flow rate adjustment device for a small combined treatment septic tank, characterized in that it is equipped with a bypass pipe whose top is located at a high position.