| 摘要 |
<p>PROBLEM TO BE SOLVED: To store a membrane separator easily with an apparatus being prevented from being clogged due to membrane by means of valve switching alone, in stopping the operation of the apparatus, provide long stable operation for the membrane separator, and recover and reuse the abrasive with high efficiency stably for a long period. SOLUTION: This recovery apparatus, treating grinding process drainage with the membrane separator 2 and a centrifugal separator 3 for recovery of abrasive, is provided with a circulating means of circulating membrane permeated water in the membrane separator 2 while the operation of the apparatus is stopping.</p> |
