DE102007019000A1 - Coalescence separator for the separation of oil-water mixture useful in sewage treatment, comprises a collecting tank for the oil-water mixture, and a jigsaw connected with a pump - Google Patents

Abstract

The coalescence separator for separating oil-water mixture useful in sewage treatment, comprises a collecting tank for the oil-water mixture, and a jigsaw connected with a pump. An oil sensor is floatably mounted on bath surface in the collecting tank. The pump is disengaged when the oil sensor detects no more oil. The jigsaw is secured on the bath surface to floating body and separatably guided vertical at a profile rail laterally fixed on the collecting tank. The boundary layer formation is carried out in oil-water mixture in the height. The coalescence separator for separating oil-water mixture useful in sewage treatment, comprises a collecting tank for the oil-water mixture, and a jigsaw connected with a pump. An oil sensor is floatably mounted on bath surface in the collecting tank. The pump is disengaged when the oil sensor detects no more oil. The jigsaw is secured on the bath surface to floating body and separatably guided vertical at a profile rail laterally fixed on the collecting tank. The boundary layer formation is carried out in oil-water mixture in the height. The measuring principle of the oil sensor is conductivity measurement.

Description

The The present invention relates to a coalescence separator for separating oil-water mixtures according to the Preamble of claim 1.

coalescence work on the principle of attachment of small droplets on drip bodies, for example on metal grid structures or according to the principle of flotation (a liquid or solid substance that is lighter in density and not liquid heavy phase is miscible, is deposited ascending). The small droplets add up to larger ones Drops together, get on and form a movie that turns Remove or remove from the liquid mixture. In this way, oil-water mixtures or even separate airborne contaminants. The removal of the film from the liquid mixture is usually carried out by using one or more skimmers, which suck the film.

From the DE 195 36 310 C2 discloses a stratified liquid separator, in particular for water-floating hydrocarbons, comprising a sump in which an overflow opening for the upper liquid layer is arranged, the overflow opening being connected via a drain line to a space outside the sump. Here, a closure device is arranged in the discharge line, which is arranged above the predetermined interface between the layered liquids, such that a storage volume for liquid between the overflow opening and the closure device is as small as possible.

Of another one is in the area of the overflow opening Sensor arranged through which the position of the interface determined is, wherein the closure device through the sensor and an actuator is controllable such that the closure device for the drain line is actuated as soon as the interface when changing their altitude the sensor activated or deactivated. It is provided that the sensor Water detected by a conductivity measurement, so that the closure device is closed when water the Sensor reached. This is to avoid getting water through a high water level or by movement of the collecting basin can get into the collection tank for the hydrocarbons.

Out the prior art is known in Koaleszenzabscheider in the Wastewater treatment as a rocker suction trained Skimmer to install. Here, the phase separation limit between water and oil not variably adjustable, so that after complete Removal of the oil phase disadvantageously sucked in water becomes. To solve this problem, it has been proposed to control the operation of the rocker vacuum over a time control.

Of the present invention is based on the object, a Koaleszenzabscheider specify that the cleaning quality increases becomes.

These The object is solved by the features of claim 1. Further embodiments and advantages of the invention are apparent from the dependent claims.

Therefore becomes a coalescer for separating oil-water mixtures proposed, comprising a reservoir for the oil-water mixture and a rocker-suction device connected to a pump, in which in the reservoir an oil sensor floating on the bath surface is attached, the pump is switched off as soon as the sensor no more oil detected. Preferably, the measuring principle of the sensor, the conductivity measurement.

in the Within the framework of an advantageous development of the invention, it is provided that on the bath surface on floats Attached rocker vacuum cleaner attached to one side of the reservoir Profile rail, which is preferably made of plastic, is guided vertically displaceable. This avoids that the rocker vacuum cleaner tilts when switching on the pump.

The Boundary layer may have a variable height, wherein the Rocker sucker follows this boundary layer formation in height, causing him the floating light (oil) phase constantly can suck. The separation boundary between the two phases is through Set balance.

Of the Coalescence separator according to the invention can in Machine tools that are operated with emulsion and in systems the water treatment can be applied if an oily Load is present.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 19536310 C2 [0003]

Claims (4)

Koaleszenzabscheider for separating oil-water mixtures comprising a reservoir for the oil-water mixture and connected to a pump Rocker, characterized in that in the reservoir an oil sensor is mounted floating on the bath surface, wherein the pump is switched off when the oil sensor stops Oil detected. Coalescence separator for separating oil-water mixtures, according to claim 1, characterized in that the rocker suction on the bath surface attached to floats is and the boundary layer formation in the oil-water mixture follows in height. Coalescence separator for separating oil-water mixtures, according to claim 2, characterized in that the rocker sucker on a laterally mounted on the reservoir vertical rail slidably guided. Coalescence separator for separating oil-water mixtures, according to claim 1, 2 or 3, characterized in that that is Measuring principle of the oil sensor, the conductivity measurement is.