Wastewater treatment agent for aquaculture

Abstract

The invention discloses a wastewater treatment agent for aquaculture. The wastewater treatment agent contains an ingredient A, an ingredient B, an ingredient C and an ingredient D, wherein the ingredient A is at least one of dicalcium phosphate, sodium dihydrogen phosphate, sodium selenite and magnesium sulfate; the ingredient B is at least one of DL-methionine, a L-lysine salt, tryptophane, threonine, betaine, astaxanthin, glucan, peptidoglycan, yeast and lipopolysaccharide; the ingredient C is at least one of sodium humate powder, sodium thiosulfate powder and aluminum potassium sulfate powder; and the ingredient D is at least one of glycyrrhiza uralensis, mung bean flour, acanthopanax bark, codonopsis pilosula, dried tangerine peel, Chuanxiong rhizome, gardenia, gypsum, dittany bark, folium isatidis, cortex phellodendri, radix isatidis, eupatorium fortunei and radix bupleuri. According to the wastewater treatment agent for aquaculture, through promoting the growth of plankton in culture water, the water treatment rate is accelerated, the self-purification ability of the water is improved, the improvement on water environment is promoted, influence on fishes in the water cannot be caused, and secondary pollution cannot be caused.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to an aquaculture wastewater treatment agent. Background technique [0002] In recent years, intensive aquaculture has developed rapidly at home and abroad, especially in my country, and its aquaculture production has accounted for about 2 / 3 of the world's aquaculture production. However, most domestic aquaculture uses closed waters such as ponds and reservoirs. The self-purification ability is far lower than the eutrophication speed of the water body, and the water environment is greatly damaged. The same area cannot meet the sustainable development of aquaculture for a long time. The application of feed, the use of fungicides and disinfectants, and the accumulation of animal and plant carcasses and animal manure lead to a large accumulation of organic matter, nitrogen and phosphorus in the aquaculture water, resulting in the deterioration of the aquaculture water. According to t...

AI Technical Summary

Problems solved by technology

[0002] In recent years, intensive aquaculture has developed rapidly at home and abroad, especially in my country, and its aquaculture production has accounted for about 2 / 3 of the world's aquaculture production. However, most domestic aquaculture uses closed waters such as ponds and reservoirs. The self-purification ability is far lower than the eutrophication speed of the water body, and the water environment is greatly damaged. The same area cannot meet the sustainable development of aquaculture for a long time. The application of feed, the use of fungicides and disinfectants, the accumulation of animal and plant carcasses and animal manure lead to a large accumulation of organic matter, nitrogen and phosphorus in the aquaculture water, resulting in the deterioration of the aquaculture water body

According to the research, it is found that the ratio of feed to the total input of nitrogen and phosphorus in the pond is 76.08% and 98.55%, and the antibiotics in the long-term feeding feed can cause antibiotic-resistant bacteria in the animal body. These bacteria have different damages to humans and animals. At the same time, aquaculture The waste water has also caused great harm to the surrounding water environment and ecological environment.

[0003] The current treatment of aquaculture wastewater can be divided into physical methods and chemical methods according to its treatment principles. Among them, physical methods mainly remove suspended substances and harmful gases in water through mechanical and physical methods. Common methods include precipitation, filtration, and foam separation. , reverse osmosis, adsorption, etc.; chemical methods are mainly oxidation treatment, flocculant neutralization and coagulation, etc. The aquaculture wastewater treatment by these methods is affected by the water area and can only stay on the surface, especially all harmful substances are only passed through mixing. The bottom of the condensate sediment pool cannot be effectively removed, and the water quality environment has not been finally resolved; although there are biological treatment methods, such as biological filters, which are better in removing ammonia nitrogen and organic matter, they will increase the nitrate content in the water. Although the toxicity of nitrate is lower than that of ammonia nitrogen, excessive accumulation will also affect the growth of fish, and the discharge of waste water with high nitrogen content into the environment will cause secondary pollution