SU860864A1 - Flotation apparatus for removing oil products from water and emulsions - Google Patents

Description

The invention relates to the field of water purification and can be used in various fields of the national economy to remove oil products, emulsions and suspensions from water by flotation and electroflotation methods.

Known flotation apparatus containing a housing with a nozzle for entering the pulp, a drain gate, the sensors of the lower and upper levels, the control unit [1].

Also known is a rotary apparatus, comprising a housing with a nozzle for inputting the treated water, an exhaust valve with a nozzle, sensors for upper and lower water levels and a valve control unit [2].

Known apparatuses do not provide an accurate separation of purified water and removed substances, because after processing the apparatus drains the processed fluid through the outlet pipe, and the valve associated with this pipe plays the role of a dispenser that ensures the treatment of the dose of purified water for a certain time, which is unacceptable with a changing speed of water supply to the apparatus.

In addition, the use of periodic dosing of the purified water into the apparatus requires achieving the continuity of the water treatment process, the presence of an auxiliary tank in which the incoming water should be collected at the time of closing the valve.

The aim of the invention is to improve the accuracy of water purification from oil products and emulsions at a varying speed of water supply.

This goal is achieved by heme, that 10 the apparatus is equipped with an additional pipe for the release of petroleum products, while the lower level sensor is installed above the exhaust valve with a pipe, and an additional pipe for the release of oil products is installed above the upper level sensor.

The drawing shows a diagram of a flotation apparatus.

The apparatus consists of a housing 1 with an inlet pipe 2 installed at the bottom of the housing. Drainage of purified water is carried out through a controlled solenoid valve 3, the control of which is achieved using sensors of the lower and upper 25 water levels 4 and the control unit 5.

Floated petroleum products 6 as they accumulate are discharged through the pipe 7 for the release of petroleum products.

The flotation apparatus operates as follows30.

The purified water, aerated, treated with chemical reagents or electric current using electrodes (not shown in the diagram) fills the volume limited by the casing of the apparatus 1 through the inlet pipe 2, while the electromagnetic valve 3 is closed until the water reaches the level of the upper sensor 4, at which the relay of unit 5 is activated and the valve 3 opens. Drainage of purified water stops when the water level of the lower sensor 4 is reached. Thus, water level fluctuations occur in a narrow interval limited by sensors 4. Floated oil products accumulate above the water level and do not fall into drain valve 3, because the lower water level is above this valve. As the accumulation of oil products, their layer reaches the level of pipe 7 and merges into the collection.

An increase or decrease in the water supply through the pipe 2 leads, respectively, to a change in the frequency of operation of the electromagnetic valve 3.

The use of a flotation apparatus of this type will allow for continuous automatic purification of water from oil products and emulsions under the conditions of a changing speed of water supply for purification. This achieves the simultaneous separation and removal of accumulated nave. heat products in the same volume of the flotation apparatus, which greatly simplifies the cleaning process, reduces the volume of the apparatus and the cost of manufacturing the apparatus. The automation process is achieved by the simplest means, which improves the reliability of the device.

The device provides the versatility of its use both for conventional flotation methods and for the electroflotation process.

Claims (1)

Formula s and I A flotation apparatus for removing oil products from water and emulsion, containing a housing with a pipe for the input of treated water, an exhaust valve with a pipe, sensors for upper and lower water levels and a valve control unit, characterized in that, in order to increase the accuracy of water purification from oil products and emulsions at a varying speed of water supply, the apparatus is equipped with an additional pipe for the release of petroleum products, while the lower level sensor ²⁵ is installed above the exhaust valve with a pipe, and an additional pipe for petroleum products mounted above the upper level sensor.