A Bioelectrochemical Reactor for Rapid Deoxygenation of Oilfield Wastewater

Abstract

The invention relates to a bioelectrochemical reactor for rapid deoxygenation of oil field wastewater, which comprises a hollow reactor body, and the reactor body includes a water inlet part, a bottom cathode region part and an anode region part which are sequentially connected from bottom to top , the upper cathode area and the top body, the top body is provided with an overflow weir and a three-phase separator; the bottom cathode area and the anode area are provided with reference electrode openings; the bottom cathode area and the anode area A partition plate is arranged between the anode region and the upper cathode region. The bioelectrochemical reactor used for rapid deoxygenation of oil field wastewater provided by the present invention efficiently removes oxygen in stages through a bioelectrochemical device, so that a higher oxygen removal rate can be obtained in a short period of time, thereby avoiding oxygen The corrosion effect on pipelines can well meet the needs of practical applications.

Description

technical field [0001] The invention belongs to the technical field of electrochemical corrosion prevention and control of oilfield wastewater, and in particular relates to a bioelectrochemical reactor for rapid deoxygenation of oilfield wastewater. Background technique [0002] In recent years, in view of equipment corrosion, pipeline blockage, filter material pollution and other hazards caused by sulfide in oilfield systems, air desulfurization towers with high treatment efficiency, low operating cost and easy operation can be used to remove sulfide. The application of the air desulfurization tower causes the dissolved oxygen in the subsequent multi-stage filtration water treatment process to reach 0.5-5mg / L, which is much higher than the standard requirement of 0.05mg / L for reinjection water. [0003] The dissolved oxygen in the injected water will cause serious corrosion to the water injection pipeline equipment and casing, and accelerate the progress of corrosion; the d...

AI Technical Summary

Problems solved by technology

The wide application of polymer injection flooding in tertiary oil recovery also has strict requirements on the oxygen content in water; experiments show that dissolved oxygen in water will oxidize polymers, shortening polymer molecular chains and resulting in viscosity changes. Small eventually reduces the oil displacement effect

[0006] At present, there is a lack of technology and equipment for deoxygenation treatment using microbial oxygen reduction

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