Method for cultivating micro alga and photo-biologic reactor system utilized

Abstract

A multistage closed type of photobiological reactor system is integrated by multipiece photobiological reactor in closed type. the method for cultivating microalgae includes adding culture medium in the first stage closed photobiological reactor (CPR), cultivating culture solution at each stage CPR, transfering culture solution from last stage CPR to next stage CPR and collecting product at tail stage CPR.

Description

technical field [0001] The invention relates to a photobioreactor system and a method for cultivating microalgae with the photobioreactor system. Background technique [0002] The existing microalgae cultivation is mainly carried out in photobioreactors. So far, a wide variety of photobioreactors with different structures have been successfully developed, including open pool, horizontal tubular, vertical tubular, flexible bag and other types. There are two representative types: raceway pool type and closed photobioreactor. The former is suitable for microalgae that can be cultured openly, has low production costs, and can maintain a certain yield in large-scale production. The closed photobioreactor can be used for the cultivation of most algae, and it is easy to control the cultivation conditions and growth parameters; CO 2 High utilization rate. Among them, the typical ones are horizontal spiral tube type and vertical tube type, which are suitable for algae that are not...

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Problems solved by technology

In the above-mentioned cultivation process, each cycle needs to be cleaned, disinfected and inoculated before the next new cultivation cycle can be carried out. The number of cultures is relatively small, and the efficiency of cultivation is relatively low. It is generally more suitable for laboratory use, while for Industrialized production increases the cost of culture accordingly; in this culture method, the addition of the culture medium is done manually, which is time-consuming and laborious, and the use of a water pump to add the culture medium will easily lead to contamination of the culture medium and damage caused by the operation of the pump. temperature changes; and if the method of partially collecting culture products and adding medium at the same time is used, since the monomeric photobioreactor is cultivated in a relatively independent manner, the addition of medium and the collection of culture products are separated in time and space. Continuous, it is easy to cause part of the collected culture products to be added medium, which will affect the effect of culture and cause low efficiency of culture

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