| 摘要 |
PURPOSE:To obtain washed raw laver having desired salt content, by determining the salt content of the washing water in the raw laver washing tank, determining the turbidity of the water discharged from the washing tank and carrying out the washing while switching the fresh water and saline water according to the determination results. CONSTITUTION:A salt-content sensor 16 is placed in the washing tank 1, and a turbidity sensor 12 is attached to the drain pipe 13 connected to the washing tank 1. Washing of a laver is carried out by supplying washing water from the feeding pipe 15 until the measured turbidity reaches a specific level. In the above process, the salt content of the washing tank is measured by the salt-content sensor 16, and the kind of the washing water is switched between fresh water and saline water so as to keep the salt content to a prescribed level. Preferably, a measurement tank 9 partitioned with a mesh plate is placed in the washing tank 1. |
