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

An aquaculture and water purifying agent technology, which is applied in the fields of oxidized water/sewage treatment, added material water/sewage treatment, sterilization/microdynamic water/sewage treatment, etc., can solve the problem of high cost of mechanical oxygenation, consumption of dissolved oxygen, It can solve problems such as poor water quality, and achieve the effects of solving hypoxia and water quality deterioration, controlling the rate of oxygen release, and improving water purification efficiency.

Inactive Publication Date: 2007-12-19
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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preparation example Construction

[0018] The preparation methods reported in the literature are all based on reagent raw materials, without considering the actual industrial production background, especially industrial grade sodium chloride and sodium sulfate raw materials often contain a small amount of metal elements such as iron, copper, manganese, and at the same time, the production process It is also unavoidable to mix some metal elements in the product, which will cause the decomposition of hydrogen peroxide and the product, reduce the yield and the content of active oxygen in the product.

[0019] In the aquaculture oxygen-increasing, disinfecting water purifying agent and preparation method thereof provided by the present invention, 0.01 to 0.05 times the weight of hydrogen peroxide is added during the synthesis process of the ternary adduct of sodium sulfate, hydrogen peroxide and sodium chloride It can avoid the decomposition of hydrogen peroxide and products caused by metal ions such as iron, copper...

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 and sodium chloride ternary addition things.

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

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 ternary adduct of sodium sulfate, hydrogen peroxide and sodium chloride.

[0027] Add the ternary adduct of sodium sulfate, hydrogen peroxide and sodium chloride into the fluidized bed to make it in a fluidized state; make 0.05% aqueous solution of 2.95g chitosan, atomize it in the moving sulfuric acid through the nozzle Sodium, hydrogen peroxide and sodium chloride ternary adducts; after the water evaporates, an aquaculture oxygenation and disinfection water purifier product with an active oxygen content of ...

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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 Patents(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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