Device for purifying livestock and poultry breeding wastewater by microalgae and method thereof

Abstract

The invention relates to a device for purifying livestock and poultry breeding wastewater by microalgae on a large scale and an applying method thereof. The system comprises a pretreatment system, a greenhouse system, a photobioreactor system, an alga liquid concentration online detection system, a collecting system, a water circulating system, a temperature control system and a lighting system for livestock breeding. According to the invention, microalgae are cultivated by means of modulated wastewater produced in livestock breeding on the large scale, so that the production cost for cultivating microalgae is greatly lowered. Nitrogen and phosphorus in the liquid waste serve as nutrient substances for cultivating microalgae, so that indexes of wastewater are reduced, sewage is purified, and the water quality is improved.

Description

technical field

[0001] The invention relates to a microalgae purification device for livestock and poultry breeding wastewater and a method thereof. Background technique

[0002] Energy crisis and water resource crisis are two major crises facing mankind in the 21st century, and they are the main problems restricting human development. Therefore, the development of economical, efficient, and renewable new energy sources is an urgent need for all countries in the world. Microalgae do not compete with food crops for land, have high oil content, high photosynthetic efficiency, strong environmental adaptability, large-scale scalability, and carbon capture. It is considered to be the best raw material for biodiesel production. At present, the main bottleneck faced by microalgae bioenergy technology is the high cost of obtaining biomass resources on a large scale. Therefore, how to reduce the production cost of microalgae biodiesel is an urgent problem to be solved. At present,...

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