公开(公告)号：US11377369B2

公开(公告)日：2022-07-05

申请号：US16826145

申请日：2020-03-20

申请人： Mind Body (Asia) Limited

发明人： Shu Yuen Wong ,  Hong Ning Mak ,  Siyue Li ,  Zihao Chen ,  Meng Xu

IPC分类号： C02F1/28 ,  B01D69/02 ,  B01D71/34 ,  C02F1/44 ,  C02F101/10 ,  C02F101/14 ,  C02F101/16 ,  C02F101/20 ,  C02F101/22

摘要： The invention provides a water filtration system for removing heavy metals, residual chlorine, estrogens, bacteria and dust from tap water. The system includes a first adsorbent stage cartridge including approximately 40-65 wt. % of silver-impregnated activated carbon, approximately 1-10 wt. % of activated alumina, approximately 15-35 wt. % of ceramic balls, approximately 0.5-1 wt. % of chitosan and approximately 0.5-1 wt. % of kinetic degradation fluxion media. The second filtration stage cartridge includes an antifouling electrospun nanofiber membrane. A flow path is provided between the first adsorbent stage cartridge and the second filtration stage cartridge. The multiple stage water filtration system is capable of filtering water at a volume rate of at least approximately 2 liters per minute. In one embodiment, the nanofibers may be polyvinylidene fluoride doped with polyacrylonitrile and including bacteria-repellent methoxy polyethylene glycol side chains such that the nanofiber membrane has a water contact angle of approximately 55 degrees or less.