Multifunctional oil-contained waste water treatment device

Abstract

A multifunctional oily waste disposal plant relates to a waste disposal plant. A horizontal container is designed to comprise a coarse-graining chamber, a first-level inclined plate / pipe oil eliminating chamber, a flocculation reaction chamber and a second-level inclined plate / pipe oil eliminating setting pocket which are communicated with the water according to the treatment order. The flocculation reaction chamber is composed of a cone-shaped second-level reaction chamber and a first-level reaction chamber arranged at the external circumference and a diffusion port of the first-level reaction chamber is communicated with the second-level reaction chamber. A water outlet of the second-level reaction chamber is connected with the second-level inclined plate / pipe oil eliminating setting pocket and a water inlet pipe of the first-level reaction chamber is arranged at the bottom of the cone-shaped second-level reaction chamber in the direction of interior contact; a mixing reactor is arranged on the water inlet pipe. The equipment with a integral structure can be arranged simply, has reasonably arranged structure, has good effect of separating the oil from the water, has long service life and has low running cost, in particular after filtration, the utility model delivers high effluent precision, completely meets the requirement of the produced water reinjection or exhaust and is suitable for the treatment of the oilfield produced water and oily sewage in other industries.

Description

technical field [0001] The invention relates to a sewage treatment device, in particular to a multifunctional oily sewage treatment device for treating oily sewage in oil fields. Background technique [0002] Oilfield oily sewage is associated with oil and gas reservoirs and comes from deep underground. In addition to the characteristics of general sewage, it also has high salinity, high chloride ion, etc., and its content is complex. At present, the domestic oily sewage treatment process is similar. It is a combination of inclined plate oil-water separation, flocculation, air flotation or electric flotation decontamination, filtration and other processes, such as the "oilfield wastewater treatment device" disclosed in Chinese patent 02288681.8. The interior of the horizontal circular container is divided into inclined plate treatment area, electric flotation Area, etc., and Chinese patent CN200420027997.1 discloses an "improved oily sewage purification device", which is set...

AI Technical Summary

Problems solved by technology

[0002] Oilfield oily sewage is associated with oil and gas reservoirs and comes from deep underground. In addition to the characteristics of general sewage, it also has high salinity, high chloride ion, etc., and its content is complex. At present, the domestic oily sewage treatment process is similar. It is a combination of inclined plate oil-water separation, flocculation, air flotation or electric flotation decontamination, filtration and other processes, such as the "oilfield wastewater treatment device" disclosed in Chinese patent 02288681.8, the horizontal circular container is divided into inclined plate treatment area, electric flotation Area, etc., and Chinese patent CN200420027997.1 discloses an "improved oily sewage purification device", which is set as a sloping plate separation area, a secondary air flotation decontamination area, and a filtering area according to the sequence of treatment procedures, and the slanting plate form is changed. That is to say, there are many hat-shaped convex dimples protruding in the same direction on the inclined plate surface, and there are several through holes on the protruding peripheral surface of the hat-shaped convex dimples. The separation plates are stacked and combined according to the dimples in the same direction. Sewage treatment devices each have swings, but in actual use, the removal rate of floating oil, even meeting the requirements of reinjection water with a particle size of suspended solids less than 1 micron and an oil content of sewage less than 2 milliliters, needs to be improved

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