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Nursery pond heavy metal removal device

A technology of heavy metals and nursery ponds, applied in fish farming, application, animal husbandry, etc., can solve the problems of unsuitable use and damage of the structure, and achieve the effects of increased agitation, high safety and firm structure

Inactive Publication Date: 2011-12-14
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently used "A Device for Removing Heavy Metal Ions in Semi-static Nursery Water", 1993, No.14, it has a certain effect of removing heavy metal ions, but its structure is not suitable for use in the spawning process of broodstock, and it is easy to be hit by larger broodstock Therefore, it is relatively suitable for use in the process of fish egg hatching and seedling cultivation.

Method used

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  • Nursery pond heavy metal removal device
  • Nursery pond heavy metal removal device
  • Nursery pond heavy metal removal device

Examples

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Embodiment

[0014] Example: refer to figure 1 , a heavy metal removal device for nursery ponds, which has a rectifying shell 1 with a hollow inner cavity, and the inner cavity of the rectifying shell 1 is provided with a spiral exchange base 4 capable of absorbing heavy metal ions; the upper part of the rectifying shell 1 is formed with a water outlet 13; A water inlet 14 is formed, and mixed flow holes 15 are evenly distributed around the water inlet 14; a ring-shaped air stone 2 is hung on the lower side of the rectifying shell 1 . The ring-shaped air stone 2 drives the water to form an upward flow while inflating and increasing oxygen, and flows out from the water inlet 14 through the screw exchange base 4 at last through the water outlet 13 . During this process, the water flows through the helical exchange base 4, and the heavy metal ions in the water are adsorbed by the helical exchange base 4 to achieve the effect of removing heavy metal ions. Moreover, the shape of the spiral exc...

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Abstract

The invention discloses a heavy metal removing device for a seedling growing pool, the heavy metal removing device is provided with a rectifying casing with a hollow inner cavity, and the rectifying casing inner cavity is provided with a spiral exchange group capable of absorbing heavy metal ions; the upper part of the rectifying casing is provided with a water outlet; the center of the lower part of the rectifying casing is provided with a water inlet, and flow mixing holes go through the periphery of the water inlet in a uniform distribution; an annular air stone is hung at the lower side of the rectifying casing. During inflation and oxygenation of the annular air stone, water is driven to form a rising flow, which flows by the spiral exchange group from the water inlet, and flows out from the water outlet. In the process, the water flow flows by the spiral exchange group, and the heavy metal ions in the water are absorbed by the spiral exchange group, reaching effect of removing the heavy metal ions. The heavy metal removing device in the invention is advantaged by firm structure, high safety, wide application scope, high absorption efficiency of ions, and small harm upon fry.

Description

technical field [0001] The invention relates to auxiliary equipment for aquatic seedling cultivation, in particular to a heavy metal removal device for nursery ponds. Background technique [0002] In seedling production, in order to avoid the toxic effect of heavy metal ions on biological larvae, ethylenediaminetetraacetic acid disodium salt (EDTA), nitrogen triacetic acid (NTA), tris (hydroxymethylammonium) methane (Tris), silicic acid Water-soluble chemicals such as salt, or natural products such as Fuller's soil and humic acid can be used to change the existing form of heavy metal ions. The most widely used is EDTA. The function of EDTA is mainly to change the free metal ion into a chelated state, reducing the toxicity of its acute poisoning, but it does not help the cumulative poisoning, but increases the speed of its absorption and accumulation by organisms. On the other hand, regardless of the use of EDTA or other water-soluble substances, it will be discharged when ...

Claims

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Application Information

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IPC IPC(8): A01K63/04
Inventor 吴常文常抗美徐佳晶
Owner ZHEJIANG OCEAN UNIV
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