国家/地区 中国（46） 美国（9） 世界知识产权组织（7） 欧洲专利局（EPO）（2） 印度（2） 韩国（2） 台湾（2）
IPC部 B（58）
IPC大类 B01（58）
IPC小类 B01D（58）
IPC C02F001/44（58）
发明人 LIU Y（4） ZHANG X（4） ZHAO X（4）
LI S（3） LIU X（3） GRIGGS C S（2）
HUANG Y（2） JAMISON D E（2） LI B（2）
LIN C（2） MA K（2） PEARL W C（2）
SHUMWAY W W（2） SONG J（2） WANG B（2）
公开年 2021（27） 2020（26） 2022（5）
申请年 2020（58）
专利权人 HALLIBURTON .（2） LIUZHOU XINK.（2） UNIV TIANJIN（2） US SEC OF AR.（2）

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

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

Preparing sericin doped graphene oxide membrane for forward osmosis by isolating graphene oxide flakes by centrifuging, collecting supernatant, pouring sericin solution on nylon support, pouring medium graphene oxide flake dispersion under vacuum pressure, heating, immersing in water and drying.

DEKA P, VERMA V K, SUBBIAH S, RAIDONGIA K, KEJRIWAL R

System used for treatment of slop water recovered from wellbore operation, comprises treatment unit comprising inlet, filtration medium comprising particulate pack partially coated with zwitterionic polyelectrolyte, and arranged to separate portions of slop water stream comprising water, and outlet.

JAMISON D E, SHUMWAY W W, PEARL W C

Fluid treatment system for treating fracturing fluid or drilling mud, has first filtration medium having first outlet that is provided on first side of first filtration medium, and second outlet that is provided on second side of first filtration medium to opposite first side.

JAMISON D E, SHUMWAY W W, PEARL W C

Preparation of composite modified film used in water treatment, involves soaking polyvinylidene fluoride film in solution of tris(hydroxymethyl)aminomethane hydrochloride and diaminoguanidine, modifying by oxidation deposition, and immersing film in aminated graphene oxide solution and grafting.

LIN Z, CHEN Z, YOU W, ZHANG B, WANG Y, LIN H, LI S, HUANG Y, LI D

Preparing layer-by-layer covalent cross-linked graphene oxide film useful in treating water, comprises e.g. assembling polyacrylonitrile film and graphene oxide layer-by-layer using symmetrical diamine substance as cross-linking agent.

ZHAO X, LI H, QI H, TIAN Y