A light and
temperature control circulating water parent fish rearing
system comprises a parent fish rearing module and a
water treatment module, and the parent fish rearing module is composed of a
darkroom and rearing units used for rearing parent fish. The
water treatment module is composed of a filter unit used for removing
solid impurities and regulating and controlling
water temperature, a biochemical
treatment unit used for carbon and
nitrogen removal, a disinfection unit used for sterilization and disinfection and trace
oxygenation, and an
oxygen injection unit used for efficient
oxygenation. The units are mutually connected through pipelines, the structure is simple, and assembling is easy; the whole parent fish rearing
system is totally closed and self-circulated, rearing water is filtered, decarburized, denitrified, killed and oxygenated, key indexes such as illumination,
water temperature, dissolved
oxygen and flow velocity can be accurately regulated and controlled, the method is suitable for rearing parent fishes of various fishes, and more than 90% of
water resources can be saved compared with a traditional parent fish rearing mode; in the parent fish rearing
system, only water in front of the biochemical
treatment unit needs to be conveyed to the position above the
trickling filter bed through the
circulating pump, circulating water is conveyed at other positions through
gravitational potential energy, and the advantages of being
environmentally friendly and saving energy are achieved.