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Purifying system for complefely closed sea water and fresh water fish cultivation

A purification system and freshwater fish technology, applied in the field of purification system, can solve the problems of inability to breed at the same time, poor efficiency, high power consumption, etc., and achieve the effects of improving survival rate and growth speed, reducing heat loss, and saving power consumption

Inactive Publication Date: 2006-05-17
长春市水产研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a purification system for fully enclosed sea and freshwater fish breeding and hoarding, which can solve the problems caused by high power consumption caused by high-power water pumps, incomplete filtration and precipitation, and accumulation of nitrate in circulating water. A large number of water changes, environmental pollution caused by pool water discharge, fish can not grow normally due to water temperature in winter, centralized water quality treatment, fish diseases caused by cross-infection of bacteria, sea and freshwater fish cannot be cultured at the same time, poor efficiency and other problems

Method used

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  • Purifying system for complefely closed sea water and fresh water fish cultivation
  • Purifying system for complefely closed sea water and fresh water fish cultivation
  • Purifying system for complefely closed sea water and fresh water fish cultivation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Freshwater Fish Breeding Experiment

[0025] On June 20, 2003, 3,000 rainbow breams were transported back from Qinghe Thermal Power Plant, Liaoning, and put into a breeding pond in a fully enclosed purification system. The average body weight was 52 grams, and the survival rate was 98%. The pelleted feed was fed until May 20, 2004, and the average body weight reached 0.65 kg, as shown in Table 1. The calculated yield per cubic meter was 85.5 kg.

[0026]

[0027] 2

Embodiment 2

[0029] Stocking of carp

[0030] On May 20, 2004, 2,400 kilograms of carp were transported back from Liaoyang, Liaoning Province, and put into ponds for stocking, with a density of 120 kilograms per cubic meter.

Embodiment 3

[0032] Marine Fish Farming Experiment

[0033] sea ​​bass seed

[0034] In April 2003, 35,000 perch fry were transported back from Qingdao, put into a seawater pool with a salinity of 22.8%, and raised until November 23, 2003, as shown in Table 2. The average weight is 225 grams, the body length is 26.0 cm, and the survival rate is 17.5‰ , Seed breeding yields 68.9 kg per cubic meter.

[0035]

[0036] 2

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PUM

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Abstract

The present invention belongs to the field of aquatic cultivation technology, and is one purified system for high density green cultivation of sea water and fresh water fish in a complexly closed circulation facility. The lone purified water system consists of cultivation pond, deposition pond, aerating pond and biologically purifying pond to constitute one complete circulation system. Each of the cultivation pond, deposition pond and biologically purifying pond is provided with blowdown pipeline to exhaust deposited solid dirt. The present invention has raised fish survival rate and growth speed.

Description

technical field [0001] The invention relates to a purification system for fully enclosed sea and freshwater fish breeding and hoarding, which belongs to the aquaculture industry and is a high-density, green and pollution-free breeding method for sea and freshwater fish in closed circulating water facilities. Background technique [0002] Closed circulation water fish farming technology has become a direction of fishery modernization because of its small footprint, high output and water saving. Domestic factory fish farming mostly uses filtration, sedimentation, aeration, and biological bag for nitrification and denitrification in circulating water treatment, which can cause the accumulation of nitrate for a long time. Although nitrate is not directly harmful to fish, it will Accumulation will affect the growth of fish, so a lot of water must be changed, which will not only pollute the environment, but also cause a waste of energy and water resources. Most of them use high-p...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 张伟杨春桥
Owner 长春市水产研究院
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