JPS63119809A - Oil-water separator - Google Patents

Abstract

PURPOSE:To separate oil from water with high efficiency with a simple structure by piercing an inflow pipe through the side wall of a cylindrical vessel at a specified angle, communicating an outflow pipe to the bottom of the vessel, and depositing bacteria on the partition wall having small holes at the intermediate part. CONSTITUTION:The waste water contg. oil is tangentially introduced into the vessel 1 from the inflow pipe 5, hence a spiral flow of the waste water is formed in the vessel 1, the oil is separated from the water by centrifugal force, and the water is discharged from the outflow pipe 4 through the tip 41. Meanwhile, the oil enters a chamber B from a chamber A through the small holes of the partition wall 6 and is mixed with the bacteria 7, the foil is decomposed into the water, and the water to the chamber A through the small holes of the partition wall 6. As a result, the water is collected at the bottom of the chamber A, and is forced out from the outflow pipe 4.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an apparatus for handling wastewater containing oil, and in particular,
The present invention relates to an oil/water separator that separates oil and water and further decomposes the oil.

(Prior Art) In the restaurant industry such as the restaurant industry, the treatment of oil-containing wastewater after washing dishes is becoming a major problem.

Already, cafeterias with kitchen facilities of a certain size or larger are required to install oil traps under the floor to remove and drain oil.

(Problems to be Solved by the Invention) However, since this oil trap merely separates water and oil, the oil accumulated in the oil trap had to be periodically removed.

For this reason, if the oil trap is made larger, another problem arises in that the oil accumulated in the oil trap emits a bad odor.

The present invention was made in view of the above circumstances, and its purpose is to separate oil-containing wastewater into oil and water, further decompose the oil into water by the action of bacteria, and drain the water in the form of water. Our objective is to provide an oil-water separator.

(Means for solving the problem) A cylindrical container, an inflow pipe inserted at a certain angle into the side wall of the container, and an outflow pipe having a tip end at the bottom of the container and communicating with the outside. , an oil-water separator (function) comprising: a partition having a small hole in the middle of the container that divides the container into two chambers; and bacteria placed on the top of the partition. When introduced into a container, the kinetic energy of the wastewater at the time of introduction is changed into centrifugal force, which rotates the wastewater and separates it into water and oil, and the water accumulated at the bottom of the container is released from the bottom of the container. The oil is discharged through a pipe with an opening at the bottom, and the oil is decomposed by bacteria placed on the top of the partition, and introduced as water through a small hole into the chamber at the bottom of the partition, and then drained from the pipe. It is characterized by

(Example) An embodiment of the present invention will be described below with reference to the drawings.

1 and 2, the upper part of a bowl-shaped container 1 is sealed with a lid 3 via a packing 2. As shown in FIGS. container 1
An L-shaped outflow vibrator 4 is inserted approximately in the center of the body. The portion where the outflow vibrator 4 penetrates the container 1 is configured to be watertight. There is a slight gap between the tip 41 of the outflow pipe 4 and the container 1. An inflow pipe 5 is connected to the side of the container 1. Most preferably, the angle θ between the inflow pipe 5 and the container 1 is approximately in the tangential direction of the container 1, that is, 90 degrees. Alternatively, the angle is preferably at least 45 degrees or more.In the middle of the container 1, there is provided a disk-shaped partition wall 6 with an L-shaped cross section. The container 1 is divided into two chambers A and B by this partition wall 6. This partition wall 6 is connected at its center to the outflow vibe 4 and connected to the container 1 at its periphery. And the center part is higher than the surrounding area. A gap 61 is provided between the partition wall 6 and the outflow pipe 4, and a gap 62 is provided between the container 1 and the partition wall 6.

Bacteria 7 for decomposing oil are placed on the upper surface of the partition wall 6.

Instead of the gaps 61 and 62, small holes may be provided in the center and periphery of the partition wall 6.

Next, the operation of the apparatus according to the present invention configured as described above will be explained.

Drainage water containing oil flows into the chamber A in the container 1 via the inflow pipe 5. Since the inflow pipe 5 is connected in the tangential direction of the container 1, the waste water flows in a helical state (in the direction of the arrow X) inside the container 1.

During this helical flow, oil and water are separated by centrifugal force. That is, water with a high specific gravity flows from the outer wall side of the container 1 to the bottom, passes through the tip 41, and flows into the outflow pipe 4.
is extruded. Then, it is discharged to the outside.

On the other hand, the separated oil collects at the upper center of the container 1, passes through the gap 61, and enters the chamber B (in the direction of arrow Y). Since there are bacteria 7 in this room B, this bacteria 7 and oil mix, and due to the decomposition function of bacteria 7,
The oil decomposes and becomes water, passing through the gap 62 (in the direction of arrow Z)
Then, return to room A again. Thus, moisture will collect at the bottom of room A. As mentioned above, part 11
The moisture accumulated at the bottom of A is pushed out through the tip 41 to the outflow pipe 4. Then, it is discharged to the outside of the container 1.

Undrained wastewater remains in container 1, and when the container 1 becomes full with the next drainage,
Repeat the above action.

(Effects of the Invention) As explained above, according to the present invention, oil and water are separated by applying centrifugal force to the wastewater using only the force of the drainage, and the oil is decomposed by the force of bacteria. A high-performance oil-water separator can be provided with an extremely simple configuration and without the need for external power.

[Brief explanation of the drawing]

Fig. 1 is a diagram of an oil-water separator according to the present invention, the left half of the center line is an external view, the right half is a sectional view, and Fig. 2 is a top view of the device shown in Fig. 1, with the left half is an external view, and the right half is a sectional view taken along line MM in FIG. 1... Container 2... Gasket, 3... Lid 4... Outflow pipe, 5... Inflow pipe, 6...
Separation wall, 7... Bacteria, 41... Tip, 61.
62...Gap, patent applicant Yoshimoto Pole Co., Ltd. No. 2 I:A

Claims (4)

[Claims] (1) A cylindrical container, an inflow pipe that is inserted into the side wall of the container at a certain angle, an outflow pipe that has its tip at the bottom of the container and communicates with the outside, and a pipe that is installed in the middle of the container. and a partition wall having a small hole that divides the container into two chambers. (2) The oil-water separator according to claim 1, wherein bacteria are placed on the upper part of the partition wall. (3) The oil-water separator according to claim 1, wherein the certain angle is 45 degrees or more. (4) The oil-water separator according to claim 1, wherein the small hole is a gap between the partition wall and the outflow pipe or a gap between the partition wall and the container.