Liquid purification or separation – With means to add treating material – Directly applied to separator
Patent
1997-06-03
1999-11-02
Lithgow, Thomas M.
Liquid purification or separation
With means to add treating material
Directly applied to separator
210703, 210708, C02F 124, B01D 17035, B01D 124
Patent
active
059763680
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a device for the separation of oil from water containing impurities in industries, waste plants, ships or the like places.
2. Brief Description of the Background of the Invention Including Prior Art
In the technique in question there are before known a number more or less technically complicated and expensive methods and devices as the U.S. Pat. Nos. 3,623,608, 4,564,457 and 5,158,678.
In wash racks for oars or industry with mechanical equipment and ships and other places as e.g. at petrol stations or communal waste plants wash water is mixed with oil, gravel or the like. Said water is then forwarded to waste water filtration plants where it has a negative effect upon the cleaning device which in many cases knocks out the function.
SUMMARY OF THE INVENTION
1. Purpose of the Invention
The purpose of this invention is to avoid the use or e.g. the before known expensive filter equipments and additions of chemicals.
These and other objects and advantages of the present invention will become evident from the description which follows.
2. Brief Description of the Invention
An apparatus for separating oil from water containing impurities in industries, waste plants, and ships, comprises an oil separation tank having a narrowing section tapered to converge in upward direction. An inlet for raw water is furnished at the oil separation tank. An outlet for purified water is furnished at the oil separation tank. An aerating means having an air outlet and an air inlet is disposed in a lower third part of the oil separation tank. An outlet is provided for draining water from the oil separation tank during cleaning of the oil separation tank. A plurality of steering plates is disposed in an upper part of the oil separation tank. An oil outlet formed as a pipe is disposed at a level higher than the outlet for purified water and about at the level of the steering plates. A first level controller for monitoring and/or controlling a level of the oil and/or the water is disposed at the inlet for raw water. A second level controller for monitoring and/or controlling a level of the water and of the oil is disposed at the outlet for purified water of the oil separation tank. Raw water containing oil and particles lighter than water, obtained at a preliminary separation of impurities, is introduced through the inlet for raw water into the oil separation tank. The oil and the particles lighter than water float atop the raw water based on an addition of air through the aerating means and form a floating mass, thereby resulting in separate layers of cleansed water and floating mass. Said floating mass flows through the oil outlet into a collecting means, while the purified water is discharged through the outlet for purified water of the oil separation tank.
The aerating means can be formed by perforated pipes, by cloth, or by a membrane.
The steering plates can be welded together longitudinally or transversely.
The collecting means can be formed as a barrel to receive oil discharged from the oil outlet.
The novel features which are considered as characteristic for the invention are set forth in the appended claims. The invention itself, however, both as to its construction and its method of operation, together with additional objects and advantages thereof, will be best understood from the following description of specific embodiments when read in connection with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
In the accompanying drawings, in which are shown several of the various possible embodiments of the present invention:
FIG. 1 is a side view of an apparatus for separating oil from water;
FIG. 2 is a bottom view of an apparatus for separating oil from water;
FIG. 3 is a cross-sectional view through the apparatus shown in FIG. 1.
DESCRIPTION OF INVENTION AND PREFERRED EMBODIMENT
The device according to the invention consists of an oil separation device I which is tapering upwards and provided with an inlet 1 and an outlet 2, w
REFERENCES:
patent: 2142207 (1939-01-01), Price
patent: 3479281 (1969-11-01), Kinkindai
patent: 3623608 (1971-11-01), Waterman
patent: 3986954 (1976-10-01), George
patent: 4464343 (1984-08-01), Hitchcock
patent: 4564457 (1986-01-01), Cairo, Jr. et al.
patent: 4746440 (1988-05-01), Seeger
patent: 5158678 (1992-10-01), Broussard, Sr.
patent: 5543043 (1996-08-01), Bates
Kasper Horst M.
Lithgow Thomas M.
Zickert Products A.B.
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