undReinigungszwecken Nährkultursystem and water treatment device for sterilization

A Nahrkultursystem allows the circulation of a nutrient solution, while the spread of pathogenic bacteria is prevented, and can support the growth of plants efficiently and steadily, while a component change of the nutrient solution is prevented. A water treatment apparatus for sterilization and cleaning purposes has a compact size. More specifically, the Nahrkultursystem, a culture solution that is a liquid fertilizer, circulate between a nutrient solution tank and a culture bed. The water treatment apparatus is arranged between the nutrient solution tank and the culture bed, sterilized and purified, only the culture solution that flows through the culture bed, and has a unit that an ozone delivery function to deliver ozone to the culture solution, a function of irradiation with ultraviolet rays for irradiation comprising the culture solution with ultraviolet rays and a function for photocatalyst effect to the action of a photocatalyst.