Efficient livestock and poultry breeding wastewater treatment system

Abstract

The invention discloses an efficient livestock and poultry breeding wastewater treatment system, and belongs to the field of environmental protection. The system comprises a water collecting tank, anair floatation tank, a UASB reactor, an aeration filter tank and an efficient nitrogen and phosphorus removal reactor; the output end of a grating channel is connected with the water collecting tank,and the output end of the bottom of the water collecting tank is connected with a clear water tank sequentially through the air floatation tank, the UASB reactor, the aeration filter tank, the efficient nitrogen and phosphorus removal reactor and a membrane biological filter tank. The invention provides the efficient livestock and poultry breeding wastewater treatment system which effectively removes COD and ammonia nitrogen and reduces total nitrogen and total phosphorus.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a high-efficiency livestock and poultry breeding wastewater treatment system. Background technique [0002] In recent years, China's livestock and poultry industry has developed rapidly, but most of the wastewater produced by livestock and poultry breeding and large-scale animal husbandry has become one of the main sources of water pollution. If livestock and poultry wastewater is discharged from the open air, it will not only cause serious damage to surface water and groundwater, but also seriously affect the farmland ecosystem and destroy the ecological environment. The environmental pollution caused by the discharge of livestock and poultry breeding wastewater has become one of the important bottlenecks restricting the healthy development of my country's livestock and poultry breeding industry and the construction of ecological civilization. [0003] At present, the co...

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Problems solved by technology

[0005] (1) Due to the gradual reduction of pollutants in the wastewater through multi-level physical, chemical and biological methods, the continuous solid-liquid-gas separation leads to complex processes in the prior art;

[0006] (2) The existing process is mainly realized through the multi-stage AO process. In the AO process, denitrifying bacteria and phosphorus accumulating bacteria compete for carbon sources, which will lead to the inhibition of bacterial growth and unstable denitrification and phosphorus removal effects;

[0008] (4) Since the current AO mainly uses the activated sludge method, the residence time is long and the structure occupies a large area

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