The silicon rod generates auxiliary waste liquid and cleaning waste water in the process of cutting, grinding, slicing, etc. The treatment difficulties mainly include: high concentration of organic matter (mainly polyethylene glycol, etc.), suspended matter (mainly silicon powder, silicon carbide), and fluoride ions, acid and alkali (mainly hydrofluoric acid, nitric acid and other buffer acids) and other pollutants.

Reasonably classify the wastewater and combine with ISNA ®/ DGSB ® The nitrogen removal process shall be upgraded to achieve the standard treatment of high fluoride and nitrogen wastewater, and the cutting wastewater shall be recycled to realize the maximum recycling of pollutants.