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Water purified agent for aeration, sterilizing of aquatic product culture and equipment thereof

A technology of aquaculture and water purifier, applied in the direction of oxidized water/sewage treatment, additive water/sewage treatment, sterilization/microdynamic water/sewage treatment, etc., which can solve the high cost of mechanical oxygenation and the duration of oxygen release short, consume dissolved oxygen, etc., to solve the effects of hypoxia and water quality deterioration, simple preparation process, and control the oxygen release rate

Inactive Publication Date: 2006-06-28
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the improvement of aquaculture technology, the stocking density of fish and shrimp is getting higher and higher, and a large amount of excrement and residual bait of aquatic animals are deposited in the water body. The decomposition process consumes a lot of dissolved oxygen, especially the oxygen content in the bottom area where fish and shrimp are concentrated is higher. Low, ammonia nitrogen, nitrite, hydrogen sulfide, methane and other toxic and harmful substances are high, and the water quality deteriorates, causing fish and shrimp to die due to suffocation or poisoning, which seriously restricts the high and stable production of aquaculture, especially in power outages or weather conditions. When the mutation occurs, it is easy to cause a large number of fish and shrimp to die in the pond, which will bring heavy losses to the producers.
[0003] Insufficient dissolved oxygen in aquaculture water is the root cause of water quality deterioration. At present, the methods to solve the insufficient dissolved oxygen in aquaculture water mainly include mechanical oxygenation and chemical oxygenation: the cost of mechanical oxygenation is high, and limited by the power supply conditions, the use effect is also limited; Chemical oxygenation uses some chemical agents such as potassium permanganate, hydrogen peroxide, sodium percarbonate, calcium peroxide and urea peroxide to supply oxygen to the water body
Potassium permanganate has adverse effects on water quality, especially to plankton; hydrogen peroxide decomposes too fast, making it difficult to increase oxygen at the bottom, and can only solve the problem of insufficient dissolved oxygen in the surface layer of water and water quality deterioration in a short period of time, and storage and transportation are inconvenient ; Sodium percarbonate dissolves quickly, and the duration of oxygen release is short, and long-term use causes the pH of the water body to rise; calcium peroxide releases oxygen slowly, and is expensive, so it needs to be used in conjunction with organic acids or heavy metal catalysts. Fish and shrimp are poisonous; although urea peroxide has a good effect of increasing oxygen, the concentration of nitrogen-containing substances in the water will increase while increasing oxygen, which may lead to further deterioration of water quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] At room temperature, add 250ml of aqueous hydrogen peroxide solution with a concentration of 30% by mass into the reaction flask with stirring, and add 0.41g of sodium dihydrogen pyrophosphate, then add 337g of industrial anhydrous sodium sulfate, and stir to make the sodium sulfate fully Dissolve, then slowly add 68g of sodium chloride under stirring, react for 1h; the reaction mixture is crystallized at 0°C, filtered, the mother liquor is partially circulated, and the filter cake is dried to obtain 330g of sodium sulfate / hydrogen peroxide / sodium chloride ternary addition thing.

[0024] Add the sodium sulfate / hydrogen peroxide / sodium chloride ternary adduct to the rotating drum, control the temperature inside the drum to 100°C, make 3.3 chitosan into a 5% aqueous solution, and spray it on the moving sodium sulfate through the nozzle On the hydrogen peroxide / sodium chloride ternary adduct, after the water is evaporated, an aquaculture oxygenation and disinfection water...

Embodiment 2

[0026] At room temperature, add 250ml of aqueous hydrogen peroxide solution with a concentration of 30% by mass into a stirred reaction flask, add 4.1g of ethylenediaminetetraacetic acid diammonium, then add 638g of industrial anhydrous sodium sulfate, and stir to make sodium sulfate Fully dissolve, then slowly add 34g of sodium chloride under stirring, react for 1h, cool and crystallize, filter, partly circulate the mother liquor, and dry the filter cake to obtain 295g of sodium sulfate / hydrogen peroxide / sodium chloride ternary adduct.

[0027] Add the sodium sulfate / hydrogen peroxide / sodium chloride ternary adduct into the fluidized bed to make it in a fluidized state; make 0.05% aqueous solution of 2.95g chitosan, and spray it on the moving sulfuric acid through the nozzle Sodium / hydrogen peroxide / sodium chloride ternary adduct; after the water evaporates, an aquaculture oxygen-increasing and disinfecting water purifier product with an active oxygen content of 4.3% is obtain...

Embodiment 3

[0029] At room temperature, add 250ml of 50% mass percent hydrogen peroxide aqueous solution into a stirred reaction flask, add 3g of sodium dihydrogen pyrophosphate and 3g of ethylenediaminetetraacetic acid diammonium, and then add 500g of industrial anhydrous sulfuric acid Sodium, stir to fully dissolve sodium sulfate, then slowly add 50g sodium chloride under stirring, react for 2h; cool the reaction mixture to 10°C to crystallize, filter, partly circulate the mother liquor, and dry the filter cake to obtain 1120g sodium sulfate / peroxide Hydrogen / sodium chloride ternary adduct.

[0030] Add the sodium sulfate / hydrogen peroxide / sodium chloride ternary adduct into the rotary frying pan, control the temperature in the pot to 100°C, make 1% aqueous solution of 56g chitosan, and spray it on the moving sulfuric acid through the nozzle On the sodium / hydrogen peroxide / sodium chloride ternary adduct; after the water is evaporated, an aquaculture oxygenation and disinfection water pu...

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PUM

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Abstract

A chemical to enrich oxygen, and disinfect and clean water for culturing aquatic products is a coated three-element addition of sodium sulfate, hydrogen peroxide and sodium chloride. Its preparing process features that the stabilizer is added in its synthesizing procedure for preventing the decomposition of hydrogen peroxide and product, and increasing the output rate and the content of active oxygen.

Description

technical field [0001] The invention relates to the field of fishery (culture) additives, in particular to an aquaculture oxygen-increasing, disinfecting water purifier and a preparation method thereof. Background technique [0002] With the improvement of aquaculture technology, the stocking density of fish and shrimp is getting higher and higher, and a large amount of excrement and residual bait of aquatic animals are deposited in the water body. The decomposition process consumes a lot of dissolved oxygen, especially the oxygen content in the bottom area where fish and shrimp are concentrated is higher. Low, ammonia nitrogen, nitrite, hydrogen sulfide, methane and other toxic and harmful substances are high, and the water quality deteriorates, causing fish and shrimp to die due to suffocation or poisoning, which seriously restricts the high and stable production of aquaculture, especially in power outages or weather conditions. When the mutation occurs, it is easy to caus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/68C02F1/50C02F1/72
Inventor 夏枚生胡彩虹朱兴一陈秀海罗天生
Owner ZHEJIANG UNIV
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