Electroplating wastewater treatment device

Abstract

The invention discloses an electroplating wastewater treatment device which comprises a wastewater collection tank, a pretreatment reaction tank and a stirring reaction tank, wherein the wastewater collection tank is used for collecting electroplating wastewater to be treated; the pretreatment reaction tank is connected with the wastewater collection tank through a first pipeline; a plurality groups of electrolysis material mounting bases are arranged inside the pretreatment reaction tank; an electrolysis material can be placed inside the electrolysis material mounting bases; the groups of theelectrolysis material mounting bases are respectively arranged in parallel; the stirring reaction tank is connected with the pretreatment reaction tank through a second pipeline; a feeding hole is formed in the stirring reaction tank; alkali-containing sludge is fed from the feeding hole; a stirring device is arranged inside the stirring reaction tank and is used for enhancing flowing of a liquidinside the stirring reaction tank. After pretreatment of the pretreatment reaction tank, the electroplating wastewater is fed into stirring reaction chambers for a second step of reactions, and is finally precipitated through a precipitation tank, conventional single reaction chambers are improved into a plurality of reaction chambers, sufficient reactions of the reaction chambers can be ensuredwithout mutual interference, and sufficient and efficient treatment of electroplating wastewater can be achieved.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment devices, in particular to a wastewater treatment device for electroplating. Background technique [0002] Heavy metal pollution has the characteristics of long-term, cumulative, latent and irreversible, which is harmful and costly to control. Heavy metal elements have strong mobility and can enter the human body through air, water, food chains, etc., have significant biological toxicity, have carcinogenic, teratogenic and mutagenic effects, and affect the human immune system. Accompanying the process of industrialization in our country, the accumulation of heavy metal pollution incidents occurs frequently, which poses a serious threat to the ecological environment and public health. [0003] Heavy metal wastewater comes from electroplating, metallurgy, mining, and chemical industries. Among them, the treatment of electroplating wastewater is the most complicated and difficult. Electr...

AI Technical Summary

Problems solved by technology

[0005] In the existing chemical neutralization and precipitation treatment, the reaction and precipitation are combined in one reaction tank, such as the patent No. 201510826351.2 "A Reaction Tank for Electroplating Wastewater Treatment Device", which concentrates the reaction and precipitation in the same reaction tank. As a result, the internal stirring device continuously stirs the liquid in the reaction tank, so that the internal sludge cannot be precipitated in a timely and effective manner, and there are many impurities, which affect the progress of the internal reaction.

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