国家/地区 中国（4）
IPC部 B（7）
IPC大类 B01（7）
IPC小类 B01D（7）
IPC C02F001/44（5） B01D067/00（4） B01D069/12（3）
B01D069/02（2） B01D069/10（2） C02F001/28（2）
C02F101/36（2） C02F101/38（2）
发明人
公开年 2022（7）
申请年 2020（7）
专利权人

Preparation of nanofiltration membrane involves coating film casting liquid containing polymer on nonwoven fabric, contacting obtained base film with e.g. aqueous phase solution containing amine monomer to form polyamide functional layer, crosslinking, imidizing, post-treating, and drying.

LIU Z, ZHANG J, HU L, LIANG S, WANG B

Polyvinylidene fluoride composite membrane, used in water treatment, comprises PVDF-based membrane, and poly-dopamine/oxidation graphene composite layer compounded on the film.

ZHAO X, LIU L, ZHU Z, MIAO L, MA J, JIA G

Membrane distillation apparatus for use in water treatment, comprises housing comprising hot medium compartment comprising hot medium inlet and hot medium outlet, hot medium inlet configured to receive hot medium stream comprising water, cold medium compartment comprising cold medium inlet and cold.

LAWAL D U, AZEEM M A, BAROUD T N, AL ABDULGADER H, ABDULGADER H A

Making polymeric metal carbon-based filter or adsorbent material by e.g. treating polyurethane foam with nitric acid, dissolving copper sulfate in deionized water, adding ammonia solution and dipping treated polyurethane foam in suspension.

SASIDHARAN V, CHAUHAN D, TALREJA N, ASHFAQ M

Polymer solution used for preparing nanofiltration membrane in water treatment, and also in high-temperature separation and desalination, comprises polyaryl ether sulfone block polymer, good solvent, poor solvent and additive.

CAO M

Graphene oxide titanium dioxide-dopamine polyetherimide nanofiltration membrane comprises organic ultrafiltration membrane support and functional layer prepared by ultrasonically mixing graphene oxide solution and titanium dioxide-dopamine aqueous solution, filtering to form membrane, and filtering.

LAN W, FANG F, HONG Y, CHEN Y

Modified graphene oxide with nano metal particles used for e.g. treatment of water for human consumption, is prepared by mixing phosphorus pentoxide, graphite, sulfuric acid and potassium persulfate, stirring, vacuum filtering mixture and washing, and drying to obtain pre-oxidized graphite.

BERGAMASCO R, BAZANA S D L, BIADOLA Q L S, GOMES R G, FILHO B A D A, NAKAMURA C V, SUGUIURA D, OCAMPOS F T