Pipeline type photobioreactor for culturing microalgae in multi-nutrition mode and using method of pipeline type photobioreactor

Abstract

The invention discloses a pipeline type photobioreactor for culturing microalgae in multiple nutrition modes. The pipeline type photobioreactor comprises a plurality of groups of reaction units and acirculating unit, wherein each reaction unit comprises front and rear rows of transparent pipelines; the circulating unit comprises a buffer tank and a circulating pump, wherein the buffer tank comprises a tank body, a cover body and a heating jacket, a heating device is also arranged in the heating jacket, and a pH sensor and a temperature sensor are arranged in the tank body; a discharge headerpipe is arranged at the bottom of the tank body, the discharge header pipe communicates with an inlet of the circulating pump, an outlet pipeline of the circulating pump is divided into feeding branches, and the feeding branches communicate with feeding ports of the reaction units; a material collecting pipeline is arranged on each feeding branch; a discharge hole of each reaction unit communicates with the circulating main pipe through a discharge pipeline; the circulating header pipe communicates with the buffer tank; a discharge branch pipe is also arranged on the discharge header pipe; a breather valve, an inoculation port, a carbon dioxide pipeline, a nutritive salt supplementing pipeline and a turbidity testing pipeline are arranged on the cover body; and the turbidity testing pipeline communicates with a turbidity detection device.

Description

technical field [0001] The invention belongs to the technical field of microalgae cultivation, and in particular relates to a pipeline-type photobioreactor for cultivating microalgae in a multi-nutrient mode and a use method thereof. Background technique [0002] Microalgae are a class of photoautotrophic microorganisms, and a few species of algae are also capable of heterotrophic metabolism. Algae cells are rich in nutrients and have been widely developed as health food, medicine, beauty products, etc. For example, algae oil DHA is forcibly added to infant milk powder as a dietary supplement. However, the current production capacity of microalgae is limited, which limits its wider application. Among them, the low density of microalgae culture and the low content of active substances are the main reasons for the insufficient production capacity. In the traditional microalgae culture process, due to the influence of factors such as temperature, light, and nutrient salts, th...

AI Technical Summary

Problems solved by technology

In the large-scale production of Haematococcus pluvialis, some enterprises adopted a two-stage culture model, that is, firstly, the heterotrophic culture in the fermenter was used to increase the algae cell density, and secondly, the culture solution was diluted in the pipeline reactor for light culture to induce There are many disadvantages in the synthesis of astaxanthin. One is that the culture solution is easily polluted when the tank is poured, and the second is that the re-dilution of high-density algae cells increases the cost of subsequent harvesting, etc.

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