Sewage circulation treatment system for electrogalvanizing and operation method

Abstract

The invention discloses a sewage circulation treatment system for electrogalvanizing and an operation method. The system comprises a setting tank, a neutralization tank, a reaction tank, a filtering tank and a collection tank, wherein a water inlet tube is communicated with a side wall of the settling tank; a first dosing tube and a detector are fixedly connected with a side wall of the neutralization tank; a cavity is formed in the bottom inside the reaction tank; two rotating rods are rotationally connected in symmetry inside the cavity; upper ends of the two rotating rods both extend into the reaction tank; a plurality of stirring rods are fixedly connected in symmetry on the side wall of one end inside the reaction tank, of each rotating rod; a driving device is arranged inside the cavity; the driving device is connected with the two rotating rods; a filtering device is arranged inside the filtering tank; and a first communicating tube is communicated with a side wall of the filtering tank. The system has the advantages that by adopting the system, sewage can be effectively treated, the content of zinc can be greatly reduced, and emission standards can be met.

Description

technical field [0001] The invention relates to the technical field of electrogalvanizing sewage treatment, in particular to a sewage circulation treatment system and an operation method for electrogalvanizing. Background technique [0002] Electrogalvanizing, also known as cold galvanizing in the industry, is the process of forming a uniform, dense and well-bonded metal or alloy deposition layer on the surface of the workpiece by electrolysis. Compared with other metals, zinc is a relatively cheap and easy-to-plate metal. It is a low-value anti-corrosion coating and is widely used to protect steel parts, especially to prevent atmospheric corrosion, and for decoration. Plating techniques include tank plating, barrel plating, blue plating, automatic plating and continuous plating. [0003] At present, during the production process of large-scale electrogalvanizing factories, zinc-containing sewage will be produced, which cannot be discharged directly, and the heavy metals co...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the large-scale electrogalvanizing factory in the prior art will produce zinc-containing sewage during the production process. These sewage cannot be directly discharged, and the heavy metals contained in the sewage will seriously pollute the environment. And proposed a kind of sewage circulation treatment system and operation method for electrogalvanizing

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