System and method for reclaiming cold-roll emulsion liquid wastewater

Abstract

The invention discloses a system and a method for reclaiming cold-roll emulsion liquid wastewater. The system comprises an iron steel cold-roll device, a collection pool, a vibrant film ultrafiltration device, and a in-between pool. The vibrant film ultrafiltration device comprises a casing, a film group and a motor, and a center transmission rod extends downwardly from the film group, so that the motor and a belt are matched to drive an eccentric block on the center transmission rod to generate centrifugal force to induce swing, the energy generated by the swinging drives the film group to vibrate through the center transmission rod, and shearing force generated by high-frequency vibration transmits in a sinusoidal way on the surface of the film in the film group, so as to efficiently solve the silting problem of the film in the film group, and realize simple and effective treatment to the cold-roll emulsion liquid wastewater. The system can separate clear liquid from thick oil continuously and effectively, the clear liquid is input into the in-between pool and supplemented with extra oil emulsifier to get the cold-roll emulsion liquid, and the cold-roll emulsion liquid is recycled to the iron steel cold-roll equipment. The whole wastewater treatment process does not need chemicals to be added therein, so that the recycling quality of the emulsion liquid is ensured.

Description

technical field [0001] The invention relates to the technology in the field of wastewater treatment equipment, in particular to a recycling system and method for cold-rolled emulsion wastewater. Background technique [0002] The waste cold rolling emulsion mainly comes from the waste water discharged after the cooling water is recycled in the cold rolling plate production process, which is characterized by high concentration of organic matter, high oil content and high pollution intensity. The current method of treating emulsion wastewater is mainly to use inorganic polymer demulsifiers such as polyaluminum chloride or polyferric sulfate. The common disadvantages are poor demulsification effect, large dosage, and a large amount of hydroxide sludge that is difficult to handle. , which increases the dissolved substances in the wastewater, which is easy to cause secondary pollution. In response to this situation, the prior art has improved the processing method of the cold-rol...

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Problems solved by technology

[0006] In view of this, the present invention aims at the deficiencies in the prior art, and its main purpose is to provide a cold rolling emulsion wastewater recycling system and method, which can effectively solve the problem that the existing equipment and methods cannot be used simply and effectively for cold rolling The problem of poor treatment effect of emulsion wastewater

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