Circulating water treatment method and equipment for fish egg incubation

Abstract

The invention provides circulating water purification treatment equipment for fish egg incubation. The circulating water purification treatment equipment comprises a central tank, a low-level biochemical water treatment device, a high-level peroxidation water treatment device and an incubation device, wherein the low-level biochemical water treatment device comprises an upper-layer water treatment device and a lower-layer water treatment device; the high-level peroxidation water treatment device comprises a third filtering tank and a peroxidation disinfection tank which are sequentially connected; the peroxidation disinfection tank is internally provided with an aeration ring, an ultraviolet lamp, a hydrogen peroxide feeding device and a temperature control device; the third filtering tank is connected with the central tank; the peroxidation disinfection tank is provided with a water outlet pipe. The equipment is capable of purifying water quality and removing diseases and insect pests in an all-round way, creating stable and excellent incubation conditions, saving water resources and reducing cost, and is convenient to use, safe and reliable and suitable for sea-water and fresh-water fish egg incubation.

Description

technical field [0001] The invention belongs to the field of aquaculture equipment, and in particular relates to a circulating water purification treatment method and equipment for hatching fish eggs. Background technique [0002] In the 1960s, Chinese scholars invented the ring-type incubation equipment. Since then, for nearly half a century, ring-type hatching equipment has been the most commonly used equipment in aquatic hatcheries in my country. The equipment adopts the arrangement of many nozzles at the bottom of the circular ring, and the water pump injects the clear water in the outdoor sedimentation tank from the bottom of the ring through the nozzles, and the recoil force from bottom to top keeps the fertilized eggs in a suspended state in the incubator for incubation. One-time use of water has become a typical open water hatching equipment. [0003] Although loop-type hatching equipment is widely used, it has many defects. The main defects include: large water co...

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Problems solved by technology

[0003] Although loop-type hatching equipment is widely used, it has many defects. The main defects include: large water consumption, large area, hatching water only depends on outdoor sedimentation tanks for precipitation, lack of professional water treatment facilities, water quality Can not guarantee

However, none of the above patents involves water peroxidation treatment, aerobic nitrification and anaerobic denitrification water treatment measures, so the actual water quality for hatching is not ideal

[0006] In recent years, foreign scholars have reported the use of circulating water treatment technology to hatch fertilized eggs of Atlantic salmon, but denitrification technology was not involved, which resulted in the accumulation of nitrate and reduced emergence rate

Recent studies have shown that in the existing circulating water hatching technology, the water treatment is not comprehensive, and the high nitrate may cause embryo deformities, which in turn may cause saprolegniasis flooding; during incubation, early hatching embryo hatching enzymes may cause premature hatching , the rate of dead seedlings increased

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