JPS59130506A - Oil-water separating device - Google Patents

Abstract

PURPOSE:To separate efficiently an oil from water with a compact device by providing an oil floating chamber to the top of a tower-shaped vessel, and flowing an oil-containing water from the lower side to the highest part and extracting the oil from the upper side and the water from the middle part, in constituting a titled device. CONSTITUTION:A titled device is constituted of an oil-containig water introducing chamber 1 having an introducing hole 11, a water discharging chamber 3 having a discharging hole 31, an oil content collecting chamber 4 in which a packing material 41 is arranged, and an oil floating chamber 5. An oil-containg water is fed into the chamber 1 through a pipe 12 by a pump, and is flowed into the chamber 2 through a filter 21. Here, granular medium is mixed with the water while being fluidized, and the oil content is adsorbed on the surface of the medium to grow a coarse particle. The coarse oil content separates from the medium and enters the chamber 5 after passing through a filter 22 and a water introducing passage 6. Then the oil content moves upward, and the treated water enters the chamber 4 and is discharged from a discharging pipe 31 after the residual oil content is removed by the packing material 41.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an oil-water separator that removes minute oil particles from water. As an oil/water separator,
A device that separates water and oil using a centrifugal separator, or a device that allows oil-containing water to stand still or flows quietly in a laminar flow state, allowing oil to naturally float to the surface and removing the oil that rises to the surface of the water. It has been known.

However, in the case of a centrifugal separator, if solid useful components are dispersed in water, the useful solid components are separated along with the oil. Furthermore, devices with natural floating of oil have a problem of relatively low efficiency. In addition to the device described above, recently, a granular medium composed of a hydrophilic resin and a new oil-based resin has been used to adsorb fine oil particles dispersed in water onto the surface of the medium. There is known a medium that coarsens the oil content on its surface, separates the coarsened oil content, and coarsens the oil content in water. This oil coarsening medium is usually used in a fluidized bed state, and efficiently adsorbs and coarsens finely dispersed oil in water.

The g head of the present invention relates to an oil/water separation device using this oil coarsening medium.

That is, the oil/water pre-equipment of the present invention has a tower-shaped 'r--from the bottom to the upper side, an oil/water introduction chamber having an introduction hole, a flow 1riJI floor chamber, a drainage chamber having a water outlet hole, and an oil collecting chamber above the column. The fluidized bed chamber has an oil flotation chamber with an oil outlet hole at the top, and the fluidized bed chamber is partitioned by filters installed at the bottom end and the bottom end of the fluidized bed chamber, and the fluidized bed chamber contains a hydrophilic resin and a new oil-based resin. A granular oil-absorbing coarsening medium composed of is arranged in a fluidized state, and the upper filter of the fluidized bed chamber and the drainage chamber are watertightly sealed off by a bottom plate, and penetrate through this bottom plate, and pass through the upper filter. A water conduit is formed that communicates the upper part with the oil flotation chamber, and a filler is placed in the oil collection chamber, so that water containing oil flows from the oil-water introduction chamber through the lower filter. The oil in the fluidized bed chamber C' is adsorbed by the oil adsorption coarsening medium, coarsened and separated, and the water containing the coarsened oil passes through the upper filter and further passes through the water conduit to absorb the oil. Enters the flotation chamber, floats the oil in this oil flotation chamber, discharges only the oil from the oil outlet hole, flows the water downward, passes through the oil collection chamber, and the oil remaining in the water is adsorbed on the surface of the filler material. It is characterized in that it is configured such that the water is removed, flows further downward, enters a drainage chamber, and is discharged from the drainage chamber through a center outlet hole.

The apparatus of the present invention is shaped like a tower and has an oil flotation chamber at the top of the tower.
The treated water flows further downward from the top, the treated water is taken out from the middle of the tower, the oil contained in the treated water is allowed to flow upward as much as possible, and the oil is taken out from above. Its distinctive feature is that it is compact.

The oil and water introduction chamber of the oil and water separator of the present invention has an introduction hole in the bottom or side wall and has two openings at the top.

A lower filter of the fluidized bed chamber is installed in this opening. This oil/water introduction chamber is designed so that equal water pressure acts on the surface of the lower filter.
Even if the pressure acting on the lower filter differs partially due to the flow of treated water, etc., there will be fewer tragedian tubes.

Due to the treated water introduced into the fluidized bed room! It has the role of fluidizing the l1 body, increasing contact with the treated water, and efficiently adsorbing the oil in the treated water onto the surface of the medium. This fluidized bed ηa is defined as 4° between the lower filter and the upper filter, in which the treated water flows from the bottom to the top, and the medium is suspended in the flowing treated water. If it takes time for oil to be absorbed, reduce the flow rate of the treated water or increase the distance between the two filters.

4 [J3, The specific gravity of the medium is the ratio of the treated water! It is necessary to adjust the F1 flow rate so that the medium is completely dispersed between both filters in the flowing state.

The purpose of the drainage chamber is to cover the oil collection chamber below so that the treated water flows uniformly, and to prevent the flow of treated water due to drainage resistance from affecting the oil collection chamber.

The oil collection chamber is a chamber that collects coarse oil that does not rise to the surface due to abnormal flows such as eddy currents that flow into the chamber, but gets mixed up with the treated water and falls over. A filling material for collecting oil is arranged in this oil collecting chamber.

The soapstock and chamber F contain 11111 of the coarsened oil and water. In this chamber, the treated water containing coarsened oil is directed upward from the water conduit, the oil flows downward as it is, and the water without oil flows downward.

Note that it is necessary to change the flow rate of the treated water or the cross-sectional area of the chamber so that the treated water descends at a higher speed than the floating speed of the oil components floating in the treated water. In this device, the water in the treated water is introduced from the bottom, ie, the oil-water introduction chamber J, the fluidized bed chamber, the soapstock chamber and the chamber J? The oil rises through the 1-shaped device, reverses direction in the oil flotation chamber, flows downward, and flows to the oil collection chamber and drainage chamber. -The oil flows upward from the oil/water introduction chamber to the fluidized bed chamber! 1. Oil is coarsened in this fluidized bed chamber. Then, the soapstock flows further upward and is sent to the C oil floating chamber.'' - Empty C
The coarsened oil collects above the oil flotation chamber. Furthermore, the oil that partially mixes with the water in the oil collection chamber is oil j11).
In the collecting chamber, the material collides with the surface of the filling material filled there, is adsorbed by the filling material, and becomes coarse as the material C absorbs and aggregates.
The coarse oil resists the flow of water and floats upwards, forming an oil slag.
1 into the sky, and further bunches above the oil flotation chamber.

In this way, the oil always moves upwards in the cylinder.

In this way, the water/oil/water separator has a configuration in which each chamber is arranged at -L[Z, and oil always flows upward. Therefore, the device itself becomes compact and the oil separation effect becomes high.

Furthermore, the water-oil-water flash 1 apparatus does not require any additives and can remove only oil during oil-water separation, so it is suitable for removing oil from treated water that contains useful components other than water.

Examples will be explained below.

Table 1 Table 2 COO<Chemical oxygen demand m): Same as above SS (Suspension rf1>: Same as above ht+min: Same as above Solid content
1K111Ii side view is shown in FIG. 1, and FIG. 2 is a side view of the oil/water #l apparatus shown in the embodiment of the present invention.

This oil/water device has an introduction hole 11 through which treated water can be introduced,
An oil water introduction chamber 1 provided at the bottom, a fluidized bed chamber 2 arranged in stages above it, and a drainage chamber 3 installed above it having a heavy water outlet hole 31 for discharging water from which oil has been removed. Further, there is an oil collection chamber 4 installed above the chamber 4 in which a filler 41 is arranged, and an oil floating chamber 5 installed in the first part. The sky 5 is the headrace waterway 6
are connected. Note that the fluidized bed chamber 2 and the iJl water tube 3 are partitioned watertightly by a cutting plate 32. In addition, filters 21 and 22 are installed at the upper and lower ends of the entire fluidized bed 2 to keep the particles of the oil coarsening medium placed in the perturbation bed chamber 2 within the fluidized bed v2, and to free the treated water. (The structure is such that it can pass through.In addition, in the =L direction of the oil floating chamber 5, there is an oil outlet [5
1 is set [)I am happy. Oil outlet 51J: The oil is discharged from the oil tank (see figure ?J') from the oil feed pipe 52.
sent to. Oil collection chamber/1. The filling material /1.1 arranged in K1 is a cloth-like material with relatively low water flow resistance and a large contact area, and is formed into a pipe shape and adopted as an Iζζ Darashi ring. A granular medium containing a hydrophilic acrylic resin and a lipophilic rubber component and having a diameter of 5 to 3 nm and a thickness of 3 to 4 mm is inserted into the fluidized bed chamber 2.

In this oil-water separator, treated water is sent from a water pipe 12 through an introduction hole 11 to an oil-water introduction chamber 1 by a water pump (not shown), and the water is sent from the oil-water introduction chamber 1 through a mesh of a filter 21 by the water pressure. When the treated water is introduced into the fluidized bed chamber 2, the saw granular medium disposed in the fluidized bed chamber 2 is pushed by the water flow of the treated water and flows in the fluidized bed chamber 2, completely mixing with the treated water. Intersect.

In this state, the oil contained in the treated water comes into contact with the surface of the medium, is adsorbed to the surface, and becomes coarse on the surface of the medium. Due to the action of the resin, it is separated from the medium by 1 minute.As a result, the minute oil content in the treated water decreases, and the oil content becomes coarse and large. The force of the treated water, which has become coarse and contains lζ oil, passes through the filter 22 and is sent through the water conduit 6 to the oil flotation chamber 5.In the oil flotation chamber 5, the coarsened! The treated water from which oil has been removed is collected in 1 part. Change the upward direction (move the soapstock, J chamber 5 downwards and 1 FIJ leak.Then, it enters the oil collection chamber 4 and the remaining oil in the treated water is filled. Month 4
The treated water collides with the surface of the container 1 and is removed, and the treated water is sent to the drainage chamber 3 as a slurry. From this drainage chamber 3, water passes through a water damage outlet 31 and is sent to a storage tank (not shown) via a water pipe 32.

A3. The results of removing only the oil in the treated water using the oil/water # apparatus of this example will be explained.

As treated water, aluminum wheel manufacturing single culm die cast (-
Two parts of the floating mold solution collected in the bit of the machine were separated and treated water containing fine oil particles dispersed therein was used.

The treated water before being treated with the apparatus of this example is
Shown in the table. This treated water was treated at a rate of 5 liters and 1 hour for 1 minute to remove oil. Table 2 shows the properties of the treated water after oil removal. It can be seen from Table 2 that only the oil was effectively removed without removing the graphite particles, which are the active ingredients of the coating liquid, and without adding any other ingredients.

[Brief explanation of the drawing]

The figure shows an oil-water separator according to an embodiment of the present invention.
The figure is a side view, and the second figure is a 4i11 cross-sectional view. 1... Oil/water introduction chamber 2... Fluidized bed chamber 3...
・JJI water chamber 4...Oil collection chamber 5...
・Summer Qh Fl Applicant: Toyota Motor Corporation
Howa Shoji Co., Ltd. Agent Patent attorney Hirodo Okawa Patent attorney Shudo Fujitani Patent attorney Akio Kuyama Figure 1 32

Claims (1)

[Claims] (1) A tower-shaped oil-water introduction chamber with two introduction holes from the bottom to the top, a fluidized bed chamber, a drainage chamber with water outlet holes, an oil collection chamber,
The fluidized bed chamber has an oil floating chamber with an oil outlet hole in the upper part, and the fluidized bed chamber is divided by filters installed at the L and lower ends thereof, and the fluidized bed chamber contains a hydrophilic resin and a new oil-based resin. A granular oil-adsorbing coarsening medium consisting of 1) is arranged in a fluidized state, and the upper filter of the fluidized bed palm and the drainage chamber are watertightly sealed by a bottom plate, and the lower filter passes through the bottom plate of the bracket. A water conduit is formed that communicates with and covers the upper part of the oil floating chamber, and the oil collecting chamber has a structure in which a filling tank is arranged so that water containing oil flows from the oil-water introduction chamber through the lower filter. The oil enters the fluidized bed chamber, and in the fluidized bed chamber, the oil is adsorbed by the oil adsorption coarsening medium, coarsened, and separated, and the water containing the coarsened oil passes through a filter, and then passes through a water conduit to absorb the oil. Enter the floating chamber, float the oil in this oil floating chamber, discharge only the oil through the oil outlet hole, let the water flow downward, pass through the oil collection chamber, and the oil remaining in the water will be brought to the surface of the filler. An oil/water separator characterized in that the water is adsorbed and removed, flows further downward into a drainage chamber, and is discharged from the drainage chamber to a central outlet hole.