Livestock and poultry breeding wastewater treatment technology

Abstract

The invention relates to a livestock and poultry breeding wastewater treatment technology. The livestock and poultry breeding wastewater treatment technology comprises the steps that water in a septic tank enters an artificial grid, so that impurities are removed, and then water enters an adjusting tank; wastewater in the adjusting tank is lifted by a lift pump to enter a cavitation air floatation tank, a flocculating agent is added so as to generate flocculent precipitates, the wastewater flows into an anaerobic tank, phosphorus contained in phosphorus accumulating bacteria is released, the wastewater flows into a tank A, water flowing out of the tank A flows into a contact oxidation tank, and organic matters in the wastewater are oxidized and decomposed; the wastewater flows into a secondary sedimentation tank and is subjected to solid-liquid separation, precipitated liquid supernatant enters a disinfecting tank, ClO2 is added to the disinfection tank for disinfection, and yielding water reaching the standards is discharged through a standardized exhaust port; and the sludge treatment is carried out. The livestock and poultry breeding wastewater treatment technology has the advantages that the technological process is simple, the anaerobic biochemical treatment and the aerobiotic biochemical treatment are combined, nitrogen and phosphorus are removed; sludge is rich in phosphorus and has very high fertilizer efficiency; and the comprehensive energy consumption is low, the high-efficiency energy conservation is realized, the shock resistance is strong, the control requirements are low, and the secondary pollution is avoided.

Description

technical field [0001] The invention belongs to wastewater treatment in the field of animal husbandry, in particular to a livestock and poultry breeding wastewater treatment process. Background technique [0002] Animal husbandry has become one of the three major sources of water pollution. With the rapid development of animal husbandry in my country, the scale of livestock and poultry breeding is getting larger and larger, and the pollution of the ecological environment is becoming more and more serious due to the excrement brought by the production of livestock farms and the toxic residues brought by livestock and poultry feed and products. . The amount of wastewater discharged by large-scale farms every day is large and concentrated, and the wastewater contains a large number of pollutants, such as heavy metals, residual veterinary drugs and a large number of pathogens, etc. Therefore, if it is discharged into the environment or directly for agricultural use without treat...

AI Technical Summary

Problems solved by technology

For my country's small-profit farming industry, the investment and operating costs required to build such manure treatment facilities are too high