Wastewater Treatment and Reuse System for a Battery Cathode and Anode Material Production Line – Beijing Weilan

Treatment scope:

1. Rinse wastewater from anode production: main materials are graphite and silicon oxide (SiO).
2. Wastewater from cathode production: materials include lithium nickel cobalt manganese oxide, a small amount of NMP, electrolyte and lithium iron phosphate.
3. Wastewater from pre-lithiation: materials include LiOH, a very small amount of Li₂CO₃, graphite and silicon (Si).
4. Laboratory equipment rinse wastewater: alkaline mixed wastewater generated when rinsing equipment after experiments with lithium nickel cobalt manganese oxide, graphite, silicon oxide and other materials. Residual waste solution in the laboratory equipment is collected and handled as hazardous waste.