Oily wastewater treatment device and method

Abstract

The invention discloses an oily wastewater treatment device and method. The oily wastewater treatment device comprises a wastewater tank, a suction pump, a powdered activated carbon storage tank and a contact tank, wherein the contact tank comprises a tank body and a ceramic membrane module, the ceramic membrane module is installed in the tank body, the tank body is provided with a water inlet, a water outlet, a residue discharging port and a powder inlet, the wastewater tank is communicated with the water inlet, the suction pump is communicated with the water outlet, the residue discharging port is formed in the bottom of the tank body, and the powdered activated carbon storage tank is communicated with the powder inlet to add the powdered activated carbon to the tank body. The ceramic membrane module is a container structure formed by a ceramic membrane and provided with an outlet, the outlet is communicated with the water outlet, and the ceramic membrane is formed by integrally firing a supporting layer and an effective layer provided with pore channel. By the adoption of the oily wastewater treatment device and the method, the water quality requirement of reused wastewater of an oil field can be met, and the suspended matter content and oil content of output water and the median size of suspended matter can all meet the highest requirement for reinjected water of the oil yield.

Description

technical field

[0001] The invention relates to the technical field of wastewater treatment, in particular to a device and method for treating oily wastewater. Background technique

[0002] The water content of crude oil produced in many oilfields is increasing. Generally, the water content is 70% to 80%, and some oilfields even have a water content as high as 90%. The oil production sewage needs to be treated and then injected back into the underground oil-bearing formation to maintain the pressure of the oil formation and increase the water content. Oil production rate and recovery factor. The water quality of oilfield reinjection water will directly affect the development effect of oilfield water injection and the operation and service life of the entire water injection treatment system. Analytical method") basic requirements.

[0003] At present, the water sources for reinjection mainly come from surface fresh water, ground water, oily sewage and sea water. Different ...

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