Bidirectional deep adsorption treatment method for oily sewage

Abstract

The invention discloses a bidirectional deep adsorption treatment method for oily sewage, and belongs to the technical field of sewage treatment. After sewage stands for layering, the sewage is put into an oil suction disc, then migration of the sewage is controlled through magnetic attraction force to absorb oil stains on the surface layer, meanwhile, oil absorption particles are continuously released in the absorption process to trigger the transposition floating phenomenon, on one hand, low migration resistance and high oil absorption efficiency of the oil absorption disc in water are always kept, on the other hand, the released oil absorption particles can absorb residual oil drops in the water in the sinking process in the water, and finally sink into the water bottom, and the oil absorption disc floats upwards and is recovered after absorption saturation, so that bidirectional absorption of the oil stains is realized, the absorption efficiency and the absorption effect of the oil stains are remarkably improved, and effective absorption treatment can be realized on both large-area oil stains on the surface layer and residual oil drops in water.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a two-way deep adsorption treatment method for oily sewage. Background technique [0002] Sewage refers to the effluent water from domestic and production that is polluted to a certain extent. Water that has lost its original function is simply called sewage. It is mainly the water after daily use, which contains more organic matter and is easier to handle. [0003] From the viewpoint of the source of sewage, sewage can be defined as waste-carrying liquid or water discharged from residential, institutional, commercial or industrial areas mixed with groundwater, surface water, snowstorms, etc. There are many types of sewage, and correspondingly there are many technologies and processes to reduce the impact of sewage on the environment. According to the source of sewage, sewage can be divided into these four categories. [0004] The first category: Industrial wastewate...

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Problems solved by technology

[0006] Category III: Commercial sewage is non-toxic and harmless sewage from commercial facilities and some components exceed domestic sewage

[0008] General industrial sewage usually contains oil pollution. When the sewage is being treated, the impact and fluctuation of the liquid level will occur continuously when the sewage is passed into the sewage tank, so that many small oil droplets will be doped and sink in the sewage instead of floating in the sewage. On the surface, in the prior art, the sewage in the sewage pool is generally subjected to a certain static treatment, but due to the large amount of sewage and the long standing time, the overall treatment efficiency is likely to be low, and the residual oil droplets in the water cannot be processed. Separation, and the separation effect is not good if the oil-water separator is used, and the traditional aeration treatment is difficult to effectively target the oil droplets covering different particle sizes, resulting in low air flotation efficiency and poor effect

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