Method for controlling water quality in aquaculture by utilizing oocystis

A technology for aquaculture and oocystis, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc. and other problems, to achieve the effect of preventing aquatic diseases, maintaining the ecological environment of water bodies, and improving the environment of aquaculture water.

Inactive Publication Date: 2017-05-31
GUANGDONG OCEAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many methods for water quality regulation in aquaculture. For example, the patent publication number CN105130007 discloses a water quality regulator, which specifically adjusts the water quality of aquaculture by adding EM bacteria, chemicals and chemical oxygenates. Ecological balance, but the added bacteria may have side effects on the breeding objects, or become dominant bacteria, which is difficult to contain, thus affecting the survival of beneficial bacteria in aquaculture water, and at the same time, aquaculture grows in chemical-rich water, which cannot guarantee shrimp The quality of product; Another example, publication number is that the patent of CN105502599 discloses a kind of composite water quality conditioner for aquaculture, maintains water quality ecological environment by adding described conditioner, specifically adopts Coptidis Rhizoma extract, Radix Radix Radix, cinnamon, electric Stone powder and other substances are compounded. Although it has good water quality disinfection and bactericidal effects, because the compound regulator is easy to eutrophicate the water body, coupled with the need for frequent use, it may cause other aquatic animal diseases, and the compound regulator There is no guarantee of long-term use

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  • Method for controlling water quality in aquaculture by utilizing oocystis

Examples

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Effect test

Embodiment 1

[0061] The method of water transfer in the high-level pond (4 acres per pond) of oocyst boji in the winter shed: use a volume of 2 tons of PVC barrels to cultivate concentrated oocysts, and add filtered oocysts to each cleaned PVC barrel. 2000L of seawater, disinfect the water with 30g of 50% strong chlorine essence for 12 hours; then neutralize it with 15g of sodium thiosulfate, and keep aerating for 24 hours. After all the residual chlorine in the water disappears, add nutrient salt and Poji oocyst The algal species are cultured for 12 days, and then the algae liquid is obtained by concentrating 30 times through precipitation. The concentrated oocysts contain more than 12 million algal cells per ml. Clean and disinfect the winter shed shrimp ponds, add sand-filtered water with a water depth of 1.5 meters; add 120kg of strong chlorine essence (50% available chlorine) to each pond after entering the water, mix evenly with an aerator, and disinfect for 12 hours; disinfection is ...

Embodiment 2

[0063] The water transfer method of oocysts Boji in earthen ponds (10 acres of ponds per mouth): adopting a volume of 2 tons of PVC barrels to cultivate concentrated oocysts, adding 2000L of seawater filtered in each PVC barrel washed clean, using The available chlorine is 20% strong chlorine essence 75g to disinfect the water for 12 hours; then use 15g of sodium thiosulfate to neutralize, and keep aerating for 24 hours. After 11 days, the algae liquid is obtained by concentrating 30 times through precipitation, and the concentrated oocysts contain more than 12 million algal cells per ml. Clean and disinfect the soil pond, add sand-filtered water with a water depth of 1 meter; add 300kg of strong chlorine essence (20% available chlorine) to each pond after entering the water, mix evenly with an aerator, and disinfect for 12 hours; Add 60kg of sodium thiosulfate to the pond for neutralization, fully detonate the oxygen for 12 hours; add 60kg of urea, 6kg of potassium dihydrogen...

Embodiment 3

[0065] The water transfer method of oocysts Boji in summer high-level ponds (each pond is 2 mu): Use 2 tons of PVC buckets to cultivate concentrated oocysts, and add 2000L of filtered seawater to each cleaned PVC bucket , disinfect the water with 30g of 50% strong chlorine essence for 12 hours; then neutralize it with 15g of sodium thiosulfate, and keep blowing the gas for 24 hours. After all the residual chlorine in the water disappears, add nutrients and oocysts Seed culture for 10 days, and then concentrate 30 times by precipitation to obtain algae liquid. The concentrated oocysts contain more than 12 million algae cells per ml. Clean and disinfect the high-level pool, add sand-filtered water, the water depth is 1.2 meters; add 36kg of strong chlorine essence (50% available chlorine) to each pond after entering the water, mix evenly with an aerator, and disinfect for 12 hours; after disinfection is completed, each pond Add 18kg of sodium thiosulfate to the pond for neutrali...

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Abstract

The invention provides a method for controlling water quality in aquaculture by utilizing oocystis. The method comprises the following steps: 1) adding oocystis seeds and nutrients into clean water body, cultivating for 5-7 days, then putting fingerlings into the water body, and cultivating; and 2) ventilating the seedling cultivation water body in the step 1), adding the nutrients in the cultivation process and supplementing the oocystis seeds. The method provided by the invention has the advantages that the oocystis is introduced in the aquaculture, and the oocystis is utilized for absorbing ammonia nitrogen and nitrite in the water body and reducing excessive inorganic salt in the water body, and adsorbing heavy metals for reducing influence of the heavy metals in the water body on aquaculture cultivation; meanwhile, the oocystis preferentially occupies ecological space in the water body, so that the oocystis has exclusiveness on vibrios and blue-green algae, so that the method provided by the invention can stabilize normal functions of an aquaculture water system ecological system, improve an aquaculture water environment and prevent multiple aquatic diseases of prawns and the like.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a water transfer method for green algae in aquaculture, and more particularly to a method for regulating water quality in aquaculture by using oocysts. Background technique [0002] Prawns, whose scientific name is Litopenaeus vannamei, also known as White Prawn, are wide-temperature and wide-salt marine animals. They are welcomed by many consumers because of their high protein content and delicious meat. With the continuous development and advancement of species breeding technology, more and more seafood has been artificially cultured to meet the large demand of the market. [0003] In recent years, the high-density intensive culture of prawns has led to unstable production due to the prevalence of diseases, and the high incidence of shrimp diseases has brought great risks to farmers. In the prior art, a large amount of chemical drugs are generally used in the disease preve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K63/04C02F3/32
CPCA01K63/04C02F3/322C02F2103/007
Inventor 李长玲黄翔鹄韩谦
Owner GUANGDONG OCEAN UNIVERSITY
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