Culture method for effectively reducing heavy metal cadmium content in cultured fish bodies

A farming method and heavy metal technology, applied in the field of fish farming, can solve the problems of secondary pollution, long duration, slow effect, etc., and achieve the effects of mitigating harm, simple method and reducing toxicity

Inactive Publication Date: 2016-06-08
HUNAN AGRICULTURAL UNIV
View PDF2 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current bioremediation method for heavy metal treatment is mainly based on phytoremediation. This method lasts for a long time

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Culture method for effectively reducing heavy metal cadmium content in cultured fish bodies
  • Culture method for effectively reducing heavy metal cadmium content in cultured fish bodies
  • Culture method for effectively reducing heavy metal cadmium content in cultured fish bodies

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] 1) Before the farmed species are placed in the pond, 70-100kg of quicklime can be applied per mu, and adjusted appropriately according to the bottom quality and water depth of the aquaculture water.

[0038] 2) Pearl mussels are raised 30-50cm below the water surface, with a density of 600-900 per mu; fish are mainly stocked with herring, grass carp, silver carp, bighead carp, carp, crucian carp and bream and other large freshwater fish. The breeding density is controlled at 3000 to 5000 kg per mu. Various regions can be appropriately matched with local characteristic varieties according to local consumption habits, such as 150-200 Chinese mitten crabs per mu; Procambarus clarkii (crayfish) 1200-2000 per mu, etc.

[0039] 3) During the breeding process, apply quicklime once every two weeks, and adjust the amount of each application appropriately according to the season and weather conditions. Generally, it is controlled at about 7-9kg / mu from April to May; controlled at 10-1...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a culture method for effectively reducing the heavy metal cadmium content in cultured fish bodies. A mixed culture method oriented to fish and pearl mussel culture is adopted, and 70-100 kg of quick lime is applied for each mu of water surface before putting; in the culture process, the quick lime is applied for one time every two weeks, and the application amount each time is appropriately adjusted according to the season and weather conditions. By the adoption of the culture method, the content of cadmium ions entering cultured fish bodies or other aquatic organism bodies can be effectively reduced; the pH of a culture water body is regulated through the quick lime, and the toxic effect of the heavy metal cadmium on the cultured fishes is reduced; a sufficient calcium source ensures healthy development of bones and other components of the fishes and other aquatic organisms; the stronger heavy metal enrichment capabilities of hyriopsis cumingii and other low-value mussels are fully utilized, and the amount of the heavy metal cadmium enriched in the fish bodies can be decreased. The culture method has the advantages of being simple, simple and convenient to operate, wide in raw material source, low in cost, obvious in effect and convenient to popularize and apply during production.

Description

Technical field [0001] The invention relates to a fish breeding method in a water body polluted by cadmium, in particular to a breeding method for effectively reducing the heavy metal cadmium content in the cultivated fish. Background technique [0002] my country is the largest aquaculture country in the world. The output of aquatic products accounts for about 70% of the world's total output, and the output of freshwater fish accounts for 73% of the total output of the world's freshwater fish farming. The rapid development of the aquaculture industry has greatly alleviated the long-term dependence on natural fishery resources, successfully solved the problem of "difficulty in eating fish" of my country's 1.3 billion people, and played a huge role in improving the dietary structure of residents. [0003] However, my country’s long-term mining and processing of minerals, as well as the accumulation of heavy metal pollution in the process of agriculture and industrialization have gra...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): A01K61/00
CPCA01K61/00Y02A40/81
Inventor 李德亮皮杰朱鹏飞王剑平雷留萍余建波
Owner HUNAN AGRICULTURAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap