Integrated multiphase-flow treatment device for oil-containing sewage and sewage treatment method

Abstract

The invention provides an integrated multiphase-flow treatment device and an integrated multiphase-flow treatment method for oil-containing sewage, and belongs to the technical field of sewage treatment, and is used for solving the problems that the procedure is long, the energy consumption is high, a metallic ion cannot be effectively removed, the sedimentation is generated in a filtration link, and the like, which exist in the sewage treatment in the prior art. A complete pool body is divided into four functional chambers in different sizes by vertical baffle plates, which are a mixing chamber, an electrolyzing gas flotation chamber, a settling separation chamber and a membrane filtration chamber respectively. The purposes of saving energy and saving land are achieved by adopting integrated design; the realization of removing the metallic ion and oil in the same functional area is realized by utilizing an electrolyzing gas flotation technique; the sedimentation problem in the process of filtering the oil-containing sewage is thoroughly solved through refluxing concentrated liquor. In a whole treatment process, a gas, liquid and a solid are combined and separated in multiple forms; under the synergistic effect of a physical process and a chemical process, the purpose of carrying out advanced treatment on the oil-containing sewage is finally achieved.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a method and a device for treating oily sewage in the process of oil exploitation. Background technique [0002] A large amount of oily sewage will be produced in the process of oil exploitation, and oily sewage contains more than 70% of the oil well production fluid. If it is directly discharged, it will cause serious pollution. It must be treated in depth and then reinjected into the ground or reused in other links. Advanced treatment and reinjection of oily sewage can maintain formation pressure, meet the needs of sustainable development of oilfield wells, and more importantly, avoid environmental pollution while saving a lot of water resources. At present, the process of dosing-air flotation-filtration is widely used in the industry for advanced treatment. Traditional processes and equipment have problems such as long process, high energy consumption, in...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above-mentioned problems in the prior art, the present invention provides an integrated multiphase flow oily sewage treatment method and device to solve the existing problems of the prior art, such as long process flow, high energy consumption, inability to effectively remove metal ions, filter Problems such as stasis in the link

Images