Efficient oilfield reinjection water processing system and method

Abstract

The invention discloses an efficient oilfield reinjection water processing system and method, and provides an efficient oilfield reinjection water processing system and method with low production cost, good separation effect and high efficiency. The efficient oilfield reinjection water processing system comprises a coalescer connected with a water inlet valve, the coalescer is orderly connected with a cyclone, a gas flotation machine, a coarse filter tank and a membrane tank, the coalescer is provided with a water inlet, an oil outlet, a water outlet and a small spacing inclined plate, the cyclone is conical, and is internally provided with a conical spiral cyclone tube and a flow stabilizing cover, the gas flotation machine comprises a gas flotation machine body, a gas flotation machine water inlet, a gas flotation machine water outlet, a gas flotation machine oil outlet, a dissolved air pump, a pressure tank, two groups of submersible sewage pumps and a plurality of different heights of float switches, the coarse filter tank comprises a coarse filter tank body, a cyclone propelling stirrer, a walnut shell filter material, a coarse filter tank water inlet, a coarse filter tank water outlet and a coarse filter tank oil outlet, and the membrane tank is provided with a filter element. The efficient oilfield reinjection water processing system has the advantages of artful design, good filtering effect and low production cost.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to an oilfield reinjection water treatment system and a method thereof. Background technique [0002] In the process of oil field exploitation, a kind of oily sewage will be produced. In order to extract the oil and some effective substances in the sewage, the sewage needs to be treated, so that the treated sewage can be recycled, reduce production costs, and avoid wasting water resources. [0003] At present, the conventional sewage treatment method is: primary settlement → secondary settlement → buffer tank → primary filtration → secondary filtration → effluent storage tank, due to the low efficiency of conventional primary settlement, secondary inclined plate settlement and other treatment equipment, the residence time Long, so the relative investment cost and land occupation are large. At the same time, due to the long process of the equipment and many processing facilities, it ...

AI Technical Summary

Problems solved by technology

[0007] However, these two types of settlement methods all bring problems such as long settlement time, low efficiency, and poor separation effect, which seriously affect the oilfield production progress and the sewage treatment effect

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