A kind of treatment method of livestock and poultry breeding wastewater

Abstract

The invention provides a treatment method of livestock / poultry culture wastewater, belonging to the technical field of wastewater treatment. The method comprises the steps of pretreatment, heavy metal treatment, antibiotic treatment and Lemna minor culture. The wastewater treatment method is mainly used for treating livestock / poultry culture wastewater in summer, and adopts the Lemna minor for culture, thereby lowering the contents of ammonia nitrogen and phosphorus in wastewater and providing natural feed for livestock / poultry culture; and the livestock / poultry wastewater is well treated, thereby relieving the economic pressure of the culture farmer, and solving the problem of pollution.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a treatment method for livestock and poultry breeding wastewater. Background technique [0002] With the rapid development of my country's intensive livestock and poultry breeding industry and the continuous expansion of business models, the problem of livestock and poultry breeding wastewater pollution has become increasingly prominent. Nitrogen, phosphorus, antibiotics (such as sulfonamides, macrolides, and tetracyclines) and heavy metals (copper, arsenic, zinc, lead, and nickel, etc.) contained in livestock and poultry wastewater are low-concentration but highly harmful pollutants , poses a huge potential threat to human health. [0003] Duckweed is distributed in all parts of the north and south of China and reproduces quickly. It is a good feed for pigs and ducks; it is also the bait for grass carp. [0004] Due to technical and economic reasons, coupled with ...

AI Technical Summary

Problems solved by technology

[0004] Due to technical and economic reasons, coupled with the lack of management, the pollutant discharge of large-scale livestock and poultry farms is in a state of laissez-faire to a considerable extent, and most farms fail to effectively treat livestock manure And utilization, the loss rate of livestock and poultry manure into the water body is as high as 30%

At present, the completion rate of pollution control facilities in large-scale livestock and poultry farms in my country is less than 30%, and most of them are simple facilities that cannot meet the standards.