SMIC Shenzhen factory wastewater defluoridation project

Project overview:The generation of fluorine-containing wastewater in the electronics industry mainly comes from the corrosion section in the production process. For example, the copper wires on the circuit board are etched after the copper foil paper of the circuit board is imprinted with copper. Due to the use of a large amount of hydrofluoric acid, ammonium fluoride and other reagents, the concentration of pollutants is high, such as fluorine, ammonia, etc. The wastewater is generally highly acidic. An electronics company in Shenzhen uses adsorption method to remove fluoride. Process treatment, the treatment scale is 3,000 tons/day, the effluent fluoride complies with the "Surface Water Environmental Quality Standard" (GB3838-2002) Category III water standard (F-<1mg/L), and other other indicators do not exceed the incoming water quality or the "Surface Water Environmental Quality Standard" (GB3838-2002) Category III.

Project content:Supply of 60 tons of modified hydroxyapatite fluoride removal filter material

Processing water volume:3000 tons/day

Raw water quality:F-：3.65mg/L

Product water quality:F-：0.56mg/L