Electroplating wastewater treatment equipment

Abstract

The invention relates to electroplating wastewater treatment equipment comprising common electroplating wastewater equipment, chromic acid electroplating wastewater equipment and cyanide electroplating wastewater equipment, wherein the common electroplating wastewater equipment is provided with an alkalinization tank for collecting electroplating wastewater, the alkalinization tank is respectively connected with an oxidant electrolytic tank and an alkaline liquid storage tank, the rear end of the alkalinization tank is provided with an alkalinization and sedimentation tank for settling and degrading heavy metal components, then, the heavy metal components are delivered into a common electrolytic tank for electrolysis and absorption, delivered into a deep electrolytic tank for deep electrolysis and absorption and sequentially delivered into a sedimentation tank for settling and a filter tank for filtering, and the filtered water is delivered to a purified water storage tank; the chromic acid electroplating wastewater equipment is provided with a chromic acid electrolytic tank for gathering chromic acid electroplating wastewater, and the chromic acid electroplating wastewater is delivered to a chromic acid sedimentation tank to settle and degrade chromic heavy metal after being electrolyzed, delivered to a deep electrolytic tank, a sedimentation tank and a filter tank and finally delivered to a purified water storage tank; and the cyanide electroplating wastewater equipment is provided with a cyanogen breaking tank, and cyanide electroplating wastewater is pumped to the cyanogen breaking tank, delivered to a cyanide electrolytic tank for electrolysis and absorption treatment after being degraded by using an oxidant, and then delivered to the alkaline liquid storage tank so as to be used by the alkalinization tank of the common electroplating wastewater equipment.

Description

technical field [0001] The present invention relates to electroplating wastewater treatment equipment, in particular to an electroplating wastewater treatment equipment that integrates general electroplating wastewater equipment, chromic acid electroplating wastewater equipment and cyanide electroplating wastewater equipment. characteristics of reuse or discharge. Background technique [0002] Known cyanide-based electroplating wastewater treatment, such as the invention patent entitled "Method for Recycling and Reusing Cyanide-based Electroplating Wastewater" of Taiwan No. I239320 of China, includes: resin exchange, electroplating wastewater is passed through resin to make the contained in the wastewater Cyanide heavy metal substances are completely adsorbed on the resin and clean water is separated; regenerant treatment: when the resin reaches saturation, a regenerant is introduced to make the cyanide heavy metal substances, It is in the state of cyanide anion coating hea...

AI Technical Summary

Problems solved by technology

[0003] That is to say, the aforementioned prior art is mainly to add resin to the cyanide electroplating wastewater to coat the cyanide, and then add a regeneration agent to make the cyanide (CN) anion characteristic of the cyanide, and make the heavy metal substance of the cyanide detach from the resin , the resin can be recycled and exchanged. Although this prior art can solve the problem of electroplating wastewater containing cyanide, it must be recycled for resin, which increases the treatment cost of wastewater.

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