| 摘要 |
<p>The present invention relates to a method for purifying, by means of membrane separation, a fluid in a membrane modulus (1) of pressurised fluid purifiers, said fluid being brought to flow through a filtering unit (11) of the membrane modulus (1). The invention also relates to a membrane modulus (1). In known water purifiers, where membrane separation is used as a purifying method, the water is circulated/looped through the membrane modulus in order to achieve a high water efficiency. The water loop is usually effected by having the water to pass through the membrane modulus and returned at the external side of the modulus to the low pressure side. This re-circulation may either take place directly in a gap between the modulus and its pressure vessel or in an external tube conduit. The invention is characterized in that the fluid is brought to flow through the filtering unit (11) in a circulating flow, and that the direction of flow of the fluid through a first flow segment (12) of the filtering unit (11) is opposite the direction of flow of the fluid through a second flow segment (13) of the filtering unit (11).</p> |
