System and method of culturing microalgae with liquid animal manure

Abstract

The embodiment of the invention discloses a system and method of culturing microalgae with liquid animal manure. The system comprises a waste water aeration treatment pool, a microalgae culturing pool, a microalgae centrifugal machine, a microalgae harvesting pool and an air compressor, wherein the waste water aeration treatment pool is communicated with the microalgae culturing pool through a communicating pipe, the waste water aeration treatment pool and the microalgae culturing pool are each separated into multiple subsidiary pools, and the subsidiary pools are communicated through holes which are formed in the subsidiary pools and arranged in a vertically-staggered mode; aeration pipelines are arranged at the bottom of the waste water aeration treatment pool and the bottoms of all the subsidiary pools of the microalgae culturing pool, and the aeration pipelines are connected with the air compressor; the microalgae harvesting pool is separated into a microalgae harvesting subsidiary pool and a microalgae concentrated solution harvesting subsidiary pool, and the microalgae harvesting subsidiary pool is not communicated with the microalgae concentrated solution harvesting subsidiary pool. When the system and method are applied, cost required for treating the liquid animal manure and environmental pollution caused by the liquid animal manure can be reduced.

Description

technical field [0001] The invention relates to agricultural and environmental protection technologies, in particular to a system and method for cultivating microalgae by using animal feces and urine. Background technique [0002] With the improvement of people's living standards, the demand for meat and poultry products is increasing day by day. With the help of technological innovation and the implementation of the vegetable basket project, my country's livestock and poultry breeding industry has achieved continuous rapid development for many years. However, with the large-scale development of the livestock and poultry breeding industry, the output of animal manure and wastewater produced by livestock and poultry breeding has also increased rapidly, which has brought about increasingly serious environmental pollution problems. For example, since most large-scale farms lack the necessary treatment facilities for livestock and poultry manure and wastewater pollution, livesto...

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Problems solved by technology

[0005] But the above-mentioned three-stage waste water treatment method belongs to pure consumption treatment means, and the cost of processing one ton of animal waste water is about 15 yuan, basically without output value, which makes the required cost of processing animal waste water high; further , the three-stage wastewater treatment method requires the use of chemicals when removing refractory nutrients, and the chemicals used will cause secondary pollution

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