Treatment agent for electroplating wastewater applied to circuit boards

Abstract

The invention discloses a treatment agent for electroplating wastewater applied to circuit boards. The treatment agent is characterized by being prepared from the following components in parts by mass: 10-20 parts of sodium sulfide, 3-8 parts of ferrous sulfate, 5-15 parts of sodium pyrosulfite, 15-20 parts of diatomite, 5-15 parts of ferrous powder, 12-18 parts of wheat bran, 3-8 parts of shell powder, 3-8 parts of sodium hydroxide, 1-5 parts of potassium hydroxide and 3-7 parts of ethylene diamine tetraacetic acid (EDTA). The treatment agent for the electroplating wastewater applied to the circuit boards, which comprises the sodium sulfide, the ferrous sulfate, the sodium pyrosulfite, the diatomite, the ferrous powder, the wheat bran, the shell powder, the sodium hydroxide, the potassiumhydroxide and the EDTA, has the advantages that the diatomite, the shell powder, the wheat bran and the ferrous powder are taken as flocculating agents, thereby reducing the use amount and the wasteof the ferrous powder; and the treatment agent has strong ability of removing heavy metal and high speed in treatment, and the wastewater after treatment reaches the discharge requirements.

Description

technical field [0001] The technical field of electroplating wastewater treatment of the present invention particularly relates to a treatment agent for electroplating wastewater applied to circuit boards. Background technique [0002] In the electroplating process of printed circuit boards, the metal is electrolytically plated on the surface of the product, and a large amount of wastewater will be generated during the electroplating process. There are many types of highly toxic substances contained in the wastewater, which is very harmful. of. Untreated electroplating wastewater discharged into rivers and ponds and seeped into the ground will not only endanger the environment, but also pollute drinking water and industrial water. Electroplating wastewater contains heavy metal ions such as chromium, zinc, copper, cadmium, lead, nickel, and highly toxic sundries such as acid and alkali cyanide, and some are highly toxic substances that cause cancer and distortion. Electro...

AI Technical Summary

Problems solved by technology

[0003] The existing treatment agent for electroplating wastewater used on circuit boards has low treatment efficiency and slow treatment reaction speed, and the content of heavy metals after treatment still cannot meet the discharge requirements, and a large amount of iron powder is wasted in the treatment process