国家/地区 中国（2）
IPC部 C（2）
IPC大类 C01（2） C02（2）
IPC小类 C01D（2）
IPC C01D005/00（2）
发明人
公开年
申请年
专利权人

Zero-discharge treatment method for full resource utilization of waste acid in graphene production by e.g. adjusting supernatant pH to neutral by adding sulfuric acid, evaporating and concentrating by mechanical vapor recompression, crystallizing to obtain potassium sulfate, recycling water.

FENG X, FENG J, XIAO L, FENG S

Graphene production wastewater processing system has pre-processing unit, filter unit with fine sand filter, and evaporation crystallization unit with sodium sulfate evaporated crystallizer and manganese sulfate evaporated crystallizer.

WU H, ZHAO K, ZHANG H, YANG J, GUO L