Livestock wastewater phosphorus crystallization and fertilizer formation reactor and its application

Abstract

The invention discloses a livestock wastewater phosphorus crystallization and fertilizer formation reactor and its application. The phosphorus crystallization and fertilizer formation reactor comprises a cylindrical coagulation crystallizer, a funnel flocculation crystallizer, a cylindrical static settling mud groove, a residue-water separation tube and a phosphorus-to-fertilizer device; a sidewall of the cylindrical coagulation crystallizer is provided with a water inlet tube, a magnesium feeding tube and a pH adjusting liquid feeding tube; a pH detection meter, a mixer and a floated dual-weir water decanter are arranged in the cavity of the cylindrical coagulation crystallizer, and a water outlet arranged at the bottom of the floated dual-weir water decanter is connected with a water outlet tube on the sidewall of the cylindrical coagulation crystallizer; the cylindrical coagulation crystallizer is communicated with a large opening end of the funnel flocculation crystallizer, and a small opening end of the funnel flocculation crystallizer is communicated with the cylindrical static settling mud groove; and the cylindrical static settling mud groove is communicated with the phosphorus-to-fertilizer device through the residue-water separation tube. The reactor integrates phosphorus crystallization and phosphorus fertilizer formation, so the process flow is simplified, and the operating cost is saved.

Description

technical field [0001] The invention relates to a phosphorus crystallization fertilization reactor for livestock and poultry waste water and an application thereof, belonging to the technical field of agricultural resources and environment. Background technique [0002] With the rapid development of large-scale livestock and poultry breeding in my country, the environmental problems of livestock and poultry have become increasingly prominent, especially the excessive discharge of phosphorus in livestock and poultry wastewater, which has become one of the important factors affecting the eutrophication of water bodies in my country. At the same time, as an essential nutrient element for agricultural production, phosphorus is seriously scarce in the world. In recent years, the development of new resources and environmental technologies, combining phosphorus pollution control and phosphorus resource recovery, has become the frontier of research and application. [0003] The met...

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Problems solved by technology

[0006] The object of the present invention is to provide a phosphorus crystallization fertilizer reactor for livestock and poultry wastewater and its application. The phosphorus crystallization fertilizer reactor for livestock and poultry wastewater can effectively overcome the complex process and low phosphorus recovery rate of existing phosphorus recovery reactors. , Phosphorus slag water phase is difficult to separate, phosphorus fertilizer rate is low, etc.

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