Oil field sludge and sewage environment-friendly treatment device

Abstract

The invention belongs to the field of oil sludge treatment devices, particularly relates to an oil field sludge and sewage environment-friendly treatment device. The device includes an air floatationtank, an air floatation tank with a circular section is fixedly mounted in the air floatation tank, a circular tray is arranged below the air floatation tank, a tray lifting mechanism is fixedly connected under the tray, a lower sealing valve is mounted on the lower end surface of the air floatation tank, when the liquid level in the tray is higher than the opening height of the lower sealing valve and the lower sealing valve is opened, the liquid surface in the tray forms liquid seal on the air floatation tank, therefore, the liquid in the air floatation tank cannot flow out; however, silt atthe bottom of the air floatation tank can slide out from the lower sealing valve under the action of self-gravity and finally slides to the edge of the tray, therefore the deposited silt can be conveniently and easily cleaned out, and relatively clear water in the tank can be reused when meeting the use conditions. Thus, water does not need to be discharged and added repeatedly due to the innovative design of the structure, at least two slurry pumps are omitted, and considerable equipment operation cost is saved.

Description

Technical field [0001] The invention belongs to the field of sludge sewage treatment devices, and particularly relates to an environmental protection treatment device for oilfield sludge sewage. Background technique [0002] In the process of petroleum exploration, mining, refining, tank cleaning, storage and transportation, due to accidents, leakage, natural settlement and other reasons, a large amount of crude oil or oil products combined with soil, water or other solid impurities formed containing crude oil or crude oil Some components in the sludge are a highly dangerous pollutant. [0003] The oil content of these sludge is relatively high, and if it is not recycled, it will cause a waste of energy. The treatment of sludge is divided into multiple processes, including sludge washing process and sludge air flotation process. [0004] Sludge washing is to wash off the crude oil or oil on the surface of solid impurities (stones, bricks, woven bags, etc.) with water or steam, and ...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem that water needs to be repeatedly discharged and added in the background technology, the present invention provides an environmental protection treatment device for oilfield sludge and sewage. Separation is easier and more thorough, and only mud and sand can be removed without drainage, and the water can be used repeatedly

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