| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a seawater circulating system capable of beforehand preventing decrease of an oxygen concentration of seawater which is stored together with laver raw algae in a laver storage tank, and increase of temperature during a period of storing laver raw algae in a laver storage tank, and as a result of this, capable of improving freshness of laver raw algae stored in a laver storage tank and consequently, improving the quality of dried laver. <P>SOLUTION: This seawater circulating system includes connecting a seawater accumulating tank which accumulates seawater to a laver storage tank which stores laver raw algae, and circulating seawater between the laver storage tank and the seawater accumulating tank. The seawater circulating system is set with an oxygen feeder for supplying oxygen to seawater to be circulated, and a seawater substituting device for substituting seawater to be circulated in the case that an oxygen concentration of seawater is less than a prescribed concentration, or a salinity concentration of seawater is less than a prescribed concentration. <P>COPYRIGHT: (C)2009,JPO&INPIT |
