Tubular photobioreactor for large-scale culture of microalgae

Abstract

The invention discloses a tubular photobioreactor for the large-scale culture of microalgae, which comprises a photoreaction tube, a light source system, an algal liquid circulation system, a temperature regulation system, a PH regulation system, a dissolved oxygen regulation system, and a control panel; the control panel is electrically connected to the temperature regulation system, the PH regulation system, the dissolved oxygen regulation system, the light source system and the algal liquid circulation system; the tubular photobioreactor further comprises a filter screen for blocking foreign matters and a reflector capable of increasing the illumination intensity of the photoreaction tube; the filter screen is arranged in a passage connecting the liquid outlet of the photoreaction tubewith the algal liquid circulation system, and the reflector is arranged at a position opposite to the position of the light source system. The invention not only effectively decreases the probabilityof the algal liquid circulation system being injured, but also effectively increases the light receiving rate of the bottom and side surfaces of the photoreaction tube, so that the number of LED (light-emitting diode) light sources used at night is reduced, consequently, energy can be saved, and the production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of microalgae cultivation, and in particular relates to a pipeline photobioreactor for microalgae cultivation on a large scale. Background technique [0002] Fucoxanthin is a carotenoid widely present in marine brown algae, diatoms, and golden algae. It has physiological activities such as scavenging free radicals, anti-cancer, regulating blood pressure, anti-obesity, and anti-allergic. It has outstanding effects on tumor and weight loss. At present, the raw materials used to extract fucoxanthin are mainly large seaweeds such as kelp and wakame. However, the development and utilization of fucoxanthin are severely limited due to the low content of fucoxanthin in macroalgae, high cost of cultivation, difficulty in extraction and purification, and seasonal growth. However, marine diatoms (such as Phaeodactylum tricornutum) are easy to achieve high-density cultivation under polyculture, and their ability to sy...

AI Technical Summary

Problems solved by technology

[0004] However, the existing closed-pipe photobioreactor has the following disadvantages: 1. The microalgae in the photoreaction tube will have partial agglomeration during the cultivation process, which will easily enter the algae liquid circulation system and cause the algae liquid circulation system to be damaged. Damage; 2. At night, in order to meet the photosynthesis of microalgae, a large number of LED light sources need to be additionally used, not only the cost is high, but also the light receiving rate of the bottom and side of the photoreaction tube is low

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