Three-in-one treatment device for turbulence air flotation, filtration and electrodeionization of cations

Abstract

The invention discloses a three-in-one treatment device for turbulence air floatation, filtration and electroelimination of cations. The device comprises a coarse treater, a fine treater and a precise treater, a lifting pump is connected with the liquid inlet of the coarse treater through a pipeline; the outlet of the coarse treater is connected with the inlet of the fine treater through a pipeline, and the outlet of the fine treater is connected with a liquid inlet pipe orifice of the precise processor through a pipeline; the treatment process flow is complete, the whole-process treatment of the oil field sewage can be independently completed, oil and suspended solids in the oil field sewage are removed, the water quality is subjected to electrodeionization treatment, the cation content in the water quality is reduced, scaling is prevented from damaging the original scale layer, the corrosion of the water quality to equipment is slowed down, the dissolved oxygen content is reduced, and harmful bacteria in the sewage are reduced; the external circulation scrubbing and thorough backwashing of the filter material can be realized, in the operation process, only gas and electricity are added, and no chemicals are added, so that the device is green, environment-friendly, safe, pollution-free and good in treatment effect, and can be widely applied to oil and suspended matter removal polarization treatment of oilfield sewage.

Description

technical field [0001] The invention relates to a three-in-one treatment device for turbulent air flotation, filtration, electrolysis and cation elimination, which is suitable for oilfield produced water, especially for treating oilfield high-condensation oil sewage, high-polymer sewage, high-sulfur sewage and high-iron sewage, and can thoroughly improve reinjection Water quality. Background technique [0002] With the development of tertiary oil recovery, oil field polymer injection and three-element flooding development, oilfield sewage has become more and more complicated and difficult to treat, especially three-element flooding sewage. High degree of emulsification, small colloidal particles, serious scaling and clogging after adding alkali, plus the improvement of standards for reinjection or reuse of difficult sewage after oilfield injection, three-dimensional flooding, measure waste liquid, and drilling waste liquid. The current chemical The treatment effect of chemi...

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Problems solved by technology

[0002] With the development of tertiary oil recovery, oil field polymer injection and three-element flooding development, oilfield sewage has become more and more complicated and difficult to treat, especially three-element flooding sewage. High degree of emulsification, small colloidal particles, serious scaling and clogging after adding alkali, plus the improvement of standards for reinjection or reuse of difficult sewage after oilfield injection, three-dimensional flooding, measure waste liquid, and drilling waste liquid. The current chemical The treatment effect of chemical and biological methods is not good, and the water quality after treatment seriously exceeds the standard. For this reason, it has been listed as a world water treatment problem by the petroleum industry.

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