Method for adding dissolved oxygen into water for recycling microalgae

Abstract

The invention discloses a method for adding dissolved oxygen into water for recycling microalgae. The method comprises the following steps that (1) a water suction pump is adopted for pumping low-oxygen water in a microalgae breeding tank into a high-concentration gas dissolving device, and oxygen is introduced into the high-concentration gas dissolving device simultaneously; (2) the high-concentration gas dissolving device is controlled to dissolve the oxygen in the low-oxygen water so as to obtain high-oxygen water with a larger amount of dissolved oxygen, and then the high-oxygen water is put back into the microalgae breeding tank through drainage holes of the high-concentration gas dissolving device. The method for adding the dissolved oxygen into the water for recycling the microalgaehas the advantages that the O2 dissolving efficiency in the water for recycling the microalgae can be improved, bacteria are difficultly mixed into the microalgae breeding tank, the good growth of microalgae is ensured, the use amount of chemical fertilizers is reduced, the death rate of the microalgae is reduced, the quality and purity of the microalgae are improved, and the breeding cost of themicroalgae is reduced; the consumption amount of oxygen is small, no bubbles are generated when the oxygen is dissolved in the water, it is avoided that the growth of the microalgae is affected due to the fact that algae are damaged, and the problem is solved that the oxygen cannot be supplied to the bottom of the tank during microalgae breeding.

Description

Technical field [0001] The invention belongs to the technical field of microalgae cultivation, and particularly relates to a method for increasing dissolved oxygen in microalgae recovery water. Background technique [0002] Microalgae are a kind of autotrophic plants that are widely distributed on land and sea, are rich in nutrients and have high photosynthetic availability. Polysaccharides, proteins, pigments, etc. produced by cell metabolism make them useful in food, medicine, genetic engineering, liquid fuels and other fields. Very good development prospects. The individual size of algae varies greatly. Among them, the group of microalgae whose shape can only be distinguished under a microscope is called microalgae. Therefore, microalgae is not a taxonomic name. [0003] Microalgae contains natural β-carotene, which has the effects of inhibiting tumors, anti-virus, anti-fungal, anti-radiation, raising white blood cells, preventing cardiovascular diseases and senile dementia, es...

AI Technical Summary

Problems solved by technology

This application can improve microalgae backwater O 2 The dissolution efficiency makes it difficult for bacteria to mix into the microalgae cultivation tank, ensures the good growth of microalgae, reduces the amount of chemical fertilizers used, reduces the mortality of microalgae, improves the quality and purity of microalgae, and reduces the cost of microalgae cultivation; consumes less oxygen, In the process of dissolving oxygen in water, no air bubbles are generated, which avoids damage to algae and causes microalgae to grow, and solves the problem of not being able to support the bottom of the tank during the cultivation of microalgae

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