A powder application device, a high-level pool and a treatment method for over-concentrated undesirable algae phases

Abstract

The invention relates to a powder application device which comprises a support rope, a powder application body for containing powder and a floating body for making the powder application body float on the water surface, wherein the support rope can move along the water surface of a culture pond under the drive of drive force; the floating body and the powder application body are fixed on the support rope; and a powder application hole through which the powder in the powder application body escapes out towards the water level is formed in the outer wall of the powder application body. The invention further relates to a shrimp culture higher-place pond using the powder application device, and a treatment method of over-strong poor algal facies of the shrimp culture higher-place pond. The powder application device is capable of making an alga-removal water purifying agent uniformly escape into a water body, and quickly and uniformly dispersing the alga-removal water purifying agent, thereby reducing the stress response of shrimps. The alga-removal water purifying agent is capable of quickly changing the poor algal facies and purifying the water; and after the alga-removal water purifying agent is applied, the transparency of the water body is quickly improved through great water discharge and exchange, the quality of the water body is improved through beneficial bacteria and a nutrient solution, excellent alga growth is promoted, and a good environment is provided for growth of the shrimps.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a powder application device, a high-level pool and a treatment method for over-concentrated undesirable algae phase. Background technique [0002] The high-level pond for prawn farming refers to the pond where the prawns are raised on the seaside, the terrain is higher than the sea level, and the seawater is pumped to raise prawns. In the mid-to-late stage of shrimp high-level pond culture, with the sharp increase of culture inputs, a large amount of organic matter such as prawn residual bait and feces accumulated in the pond, which easily caused algae to multiply, resulting in too thick algal color and low transparency in the water body (< 20cm), the water color presents undesirable algae phases such as dark green, black or dark brown. At this time, the content of harmful substances such as ammonia nitrogen and COD nitrite in the water body is significantly higher than t...

AI Technical Summary

Problems solved by technology

At present, the main means to deal with this kind of over-concentrated unhealthy algal phase is to change water in large quantities or use probiotics to adjust water. Although such methods have certain effects, they have the disadvantages of slow effect, long cycle, and easy repetition. Staying in bad algae-phase water for a long time can easily cause strong stress response of prawns, decrease of resistance, and eventually lead to disease of prawns

[0003] Powder is currently the dosage form commonly used for disinfection and purification of aquaculture water in the high-level pond culture of prawns. The application method of powder is generally as follows: dissolve the powder in water and then sprinkle the whole pond. This method is relatively simple and convenient, but it also has obvious defects: Uneven spraying may easily cause local powder concentration to be too high, causing a stress response to prawns and affecting the growth and feeding of prawns; the powder is difficult to dissolve completely, and the undissolved particles sink to the bottom of the pond, which is easy to be eaten by prawns and induce white sausage of prawns White feces and other diseases, severe cases may even lead to death

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