Processing method for industrial wastewater

Abstract

The invention discloses a processing method for industrial wastewater. Wastewater passes through a water-collecting well, a coarse grid, a first sedimentation basin, a pH value adjusting tank, a metal spherical micro-current attraction salinization reactor, an aeration basin, a biological oxidation filter tank, a secondary sedimentation basin and a clean water tank in sequence. Creativity of the method is that a special electromagnetism induction phenomenon is utilized. When metal balls are in perpendicular magnetic-induction-line-cutting motion in the magnetic field, a faraday effect is generated, and micro-current circulation is formed on surfaces of the metal balls. Zinc ions in water are attracted and gradually gather on the surfaces of the balls, and therefore the zinc ion concentration at a local part is increased. The zinc ions break away from a solution and are subjected to a salinization reaction on the surfaces of the metal balls. The zinc ions combine with negative ions in the solution to produce inorganic salt, which is attached to the surfaces of the metal balls, thereby achieving the purpose of removing zinc ions from wastewater. Meanwhile, the metal balls with the zinc salt attached can be regenerated through processes, such as grinding and cleaning, and can be reused.

Description

technical field [0001] The invention relates to a treatment method for industrial wastewater, which belongs to the field of wastewater treatment in environmental protection. Background technique [0002] The electroplating industry is an important processing industry in my country, and it has developed rapidly in the past ten years. However, due to the lack of overall and complete planning for the distribution and development of my country's electroplating industry for a long time, it has resulted in a difficult situation with many factories, small scale, low degree of specialization, and poor efficiency on the one hand, and serious pollution in the electroplating industry on the other hand. [0003] According to the current statistical data, there are about 15,000 electroplating factories in my country, and the annual average discharge of electroplating wastewater is as high as 4 billion tons, accounting for one-sixth of the total industrial wastewater discharge, but about ...

AI Technical Summary

Problems solved by technology

The advantages of the electrochemical method are: no need to add redox reagents, fast reaction speed, small footprint, easy to realize automatic operation, etc.; but its disadvantages are high power consumption, large electrode plate consumption, high processing cost, and easy electrode Concentration polarization occurs, resulting in fouling, etc.

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