| 摘要 |
A drainage control device for rotational hydroponics and method is provided to supply drainage, which is generated in nutrient culture, a nutrient solution to farm products so that the cost for hydroponics is reduced. A drainage control device for rotational hydroponics comprises the following features of: a nutrient supplying part supplying the nutrient solution in which the raw water for the hydroponics and fertilizer are mixed on the growing bed(1); a drainage water collecting basin(3) collecting the drainage ejected from the nutrient supplying part; a sterilization / dilution section which attenuates the drainage by the raw water after sterilizing the drainage gathered from the drainage water collecting basin if the drainage is gathered over the set up capacity(4); a nutrient solution storage storing the sterilized and the diluted drainage and supplying nutrient solution to the nutrient supplying part in need; a raw water feeding part supplying the raw water to the sterilization / dilution section and nutrient solution storage(6); and a controller in which the sterilization / dilution section is included and which on the whole, controls the function of the drainage control device(7). |
