国家/地区 中国（3）
IPC部 B（3）
IPC大类 B01（3） C02（3）
IPC小类 B01D（3）
IPC C02F001/28（3）
发明人 DU J（3）
公开年 2021（3）
申请年 2019（2） 
专利权人 NUCLEAR IND .（2）

Composite filter element useful in filter for emergency water supply, comprises multiple closely-connected hollow cylindrical filter layers, which are ceramic layer, composite adsorption layer, protective layer and activated carbon layer.

ZHANG K, WEI S, LIU M, BI Y, DU J

Preparing graphene modified material comprises e.g. adding graphene, iron salt and ferrous salt into water, ultrasonic blending, annealing, cooling, filtering, modifying graphene, grafting filtering, washing, freezing and drying.

FAN L, GE D, DU J, LIU Z, CHENG Z, XING C

Filter for emergency water supply, has shell whose side wall is formed with water inlet, where bottom part of shell is formed with water outlet and center part of composite filter core is formed with central cavity for flowing out water supply flow.

ZHANG K, WEI S, LIU M, BI Y, DU J