| 摘要 |
In an ultra filtration assembly for the treatment of a fluid medium esp. waste water, water passes through a membrane leaving impurities on the inflow side as retentate, and discharging the filtered water as permeate with a reduced level of impurities. The novelty is that: (a) the membrane separation unit (12) has a membrane module (19) stretched between two sequentially-positioned membrane holders (17, 18) in the direction (16) of water (11) flow; (b) the membrane module (19) is essentially tensioned in the direction (16) of water (11) flow; (c) the membrane module (19) has a number of membrane cushion (200) or hollow thread (201) membrane elements (20) which jointly form a flow passage (21) for the water (11). |
