Photobioreactor for microalgae culture

Abstract

The invention relates to a photobioreactor for microalgae culture. The photobioreactor for microalgae culture comprises a culture pond, an aerating unit, a water circulating pump, a photoreaction unit and a photosensitive switch, wherein the photoreaction unit comprises photoreaction tubes, a lower positioning tube, an upper suspending tube, an electric control valve and a density monitor. The preparation materials of the photoreaction tubes are polytetrafluoroethylene, the photoreaction tubes are connected to an S shape through sleeve joints, the photoreaction tubes are vertically fixed above the culture pond through the lower positioning tube and the upper suspending tube, the water inlet of the photoreaction unit is connected to the water outlet of the water circulating pump through a water outlet pipe, the electric control valve is arranged on the drain outlet of the photoreaction unit at the tail end of the photoreaction unit, the density monitor is arranged on the photoreaction tube at the first end of the photoreaction unit for monitoring the microalgae density in the photoreaction tubes and controlling the electric control valve to be turned on or off; and the photosensitive switch starts or stops the aerating pump and the density monitor according to induction intensity. The photobioreactor provided by the invention has the advantages that algae cells do not adhere to walls, the light energy utilization ratio is high, the energy consumption is relatively low and etc.

Description

Technical field [0001] The invention relates to a bioreactor, in particular to a photobioreactor for microalgae cultivation. Background technique [0002] Microalgae have the characteristics of rich nutrition, rapid growth and reproduction, high photosynthesis efficiency, strong environmental adaptability, short growth cycle and high yield. They are used in food, medicine, genetic engineering, energy, aquatic bait, new materials and environmental management, etc. The field has very good development prospects. The traditional cultivation of microalgae mostly adopts an open pond cultivation method, but it has the disadvantages of large area and low utilization rate of light energy. The photobioreactor has solved the above-mentioned shortcomings well. At present, photobioreactors are generally made of transparent hard plastic, glass or plexiglass. However, in photobioreactors made of the above-mentioned materials, microalgae cells adhere to the wall, resulting in the use of light e...

AI Technical Summary

Problems solved by technology

Traditional microalgae cultivation mostly adopts the open pond cultivation method, but it has the disadvantages of large floor area and low utilization rate of light energy. The photobioreactor solves the above shortcomings very well.

At present, photobioreactors are generally made of transparent hard plastic, glass or plexiglass, etc. However, in the photobioreactors made of the above materials, microalgae cells grow on the wall, resulting in the use of light energy by microalgae. Low efficiency and difficulty in cleaning the inner wall of the photobioreactor increase the cost of microalgae cultivation

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