| 摘要 |
<p>Purification of sea water or fresh water in which crustaceans are cultivated, is carried out in a closed circuit in which the water circulates between the purification plant and the tanks or troughs in which the crustaceans live. A series of modules emitting in a 2,537 Angstroms band, are spaced along the flow path to subject the crustacean for predetermined periods to the U.V. The crustaceans circulates on perforated inclined racks.</p> |
