Treatment system for electroplating wastewater

Abstract

The invention discloses a treatment system for electroplating wastewater, and relates to the technical field of sewage treatment. The system comprises a natural sedimentation pond, a chromium breakingreaction tank, a neutralization reaction tank, a first flocculation and precipitation pond, an electrolysis tower, a second flocculation and precipitation pond and a comprehensive filtering device which are successively connected, the chromium breaking reaction tank is connected with an acid agent addition box and a reduction agent addition box in sequence, and the neutralization reaction tank isconnected with organic processing cleaning water, nickeling wastewater, coppering wastewater and an alkaline agent addition box; filtration partition plates are obliquely arranged in the first and second flocculation and precipitation ponds, lifting devices are connected with the filtration partition plates, and spinous inverse hooks are arranged on the end surfaces of the filtration partition plates; the filtration partition plates are connected with floating balls through ropes, a setting agent is arranged in the floating balls, in the electrolysis tower, scrap iron is used as an anode, carbon granules are used as a cathode, the wastewater is used as an electrolyte solution, so that a tiny primary battery is formed, and the electrolysis tower is connected with an aeration device and theacid agent addition box; the system has the advantages of improving the quality and efficiency of treating the electroplating wastewater.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, more specifically, it relates to an electroplating wastewater treatment system. Background technique [0002] Electroplating is the process of plating a thin layer of other metals or alloys on the surface of certain metals using the principle of electrolysis. It is a process of using electrolysis to attach a layer of metal film to the surface of metal or other material parts to prevent metal oxidation. Rust, improve wear resistance, conductivity, reflectivity, corrosion resistance of copper sulfate, etc., and improve appearance; electroplating wastewater will be generated during the electroplating process, and the sources of electroplating wastewater are generally: 1. Plated parts cleaning water; 2. Waste water Electroplating solution; 3. Other waste water, including scouring the floor of the workshop, scrubbing plate washing water, condensed water from ventilation equipment, and various...

AI Technical Summary

Problems solved by technology

The water quality of electroplating wastewater is complex, and its composition is difficult to control. It contains heavy metal ions such as chromium, cadmium, nickel, copper, zinc, gold, silver, and cyanide, and some are highly toxic substances that are carcinogenic, teratogenic, and mutagenic.

[0003] Electroplating wastewater is one of the chief culprits of water and soil pollution. Due to the presence of heavy metals in it, improper treatment of electroplating wastewater can easily cause serious pollution to the environment. For example, electroplating wastewater without proper treatment can easily cause surface pollution. Water and soil pollution, thus causing serious harm to humans and other living things

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