Novel pneumatic type Nostoc alga raceway pond cultivation system

Abstract

The invention discloses a novel pneumatic type Nostoc alga raceway pond cultivation system. The system comprises a raceway pond, an aerodynamic system, a hanging type diversion system, and a light source strengthening unit; the raceway pond comprises a main raceway pond, a U type separator plate which is fixed at the bottom of the main body raceway pond, a sheet shaped separator plate which is arranged at the opening part of the U type separator plate, so that an S type circulated raceway is formed in the main body raceway pond; the aerodynamic system comprises an air pump, a gas head which isarranged in an L type flow deflector corner, and a gas pipe whose double ends are respectively connected to an air pump and the gas head; the hanging type diversion system comprises a detachable support which is installed on the main body raceway pond for adjusting a vertical height, and an L type flow deflector which is installed below the support for adjusting the vertical height; the L type flow deflector can be accommodated in the S type circulated raceway, and an L type corner of the L type flow deflector is connected by a hinge; the light source strengthening unit comprises a light emitting unit which is arranged on the main body raceway pond wall. The raceway pond cultivation system can be used for cultivating Pogostemon auricularius, Nostoc commune and other Nostoc alga with highefficiency, high quality and large scale.

Description

technical field [0001] The invention belongs to the field of biotechnology, in particular to a Nostoc algae cultivation system, in particular to a novel pneumatic Nostoc algae raceway pond cultivation system. Background technique [0002] Gexianmi scientific name "Nostoc sphaeroids kuz" is a rare medicinal and edible freshwater cyanobacteria that is a special product in Zouma Town, Hefeng, Hubei, my country. It is combined with Nostoc commune vanch. flagelliforme) belong to Cyanophyta (Cyanophyta) Cyanophyceae (Cyanophyceae) segmental algae (Hormogonales) Nostocaceae (Nostocaceae) Nostoc (Nostoc). [0003] Gexianmi has extremely high nutritional value. Modern experimental analysis results show that: Gexianmi contains 18 kinds of amino acids, including eight kinds of amino acids necessary for the human body; the content of various components in the dry matter of Gexianmi is about 56% of the total protein (10% of which are phycocyanin with anti-cancer and anti-cancer functions...

AI Technical Summary

Problems solved by technology

"A Raceway Pool Photobioreactor" (Chinese Patent, Publication No. CN103627632A) sets a variable-speed stirring system and a carbon dioxide supply system in the raceway pool, and introduces a variable hydraulic stirring system into the reactor design, but the design is too complicated and technical High requirements, but also face the problem of high cost and difficulty in popularization

The main defects of the paddle wheel stirring system in microalgae culture are: (1) It cannot solve the contradiction between different growth stages of microalgae, growth conditions and corresponding stirring frequency

For example, in the early stage of microalgae growth, low disturbance and water flow rate are often required, and high stirring frequency has an inhibitory effect on some microalgae; in the later stage of growth, in order to ensure better gas exchange and avoid the aggregation of high-density algal cells Shen needs a higher stirring frequency; (2) Paddle wheel stirring produces strong mechanical shear force, which is only suitable for the cultivation of algae strains with strong mechanical resistance (chlorella, spirulina, etc.), for mechanical resistance There are restrictions on the cultivation of weaker algae strains and algae species (Nostoc, etc.) that have higher requirements on the shape of the sphere; (3) The energy consumption during the operation of the motor is high, which increases the complexity and investment cost of the raceway pool structure. Facilitate scale expansion and industrialization

[0010] In addition, a few patents have reported that in the course of raceway pool cultivation, gas is introduced into the microcirculation of the culture medium as a cyclic power, such as Cai Zhiwu's "air-push photobioreactor" (Chinese patent, publication number CN101294132A) in the culture pool A large number of L-shaped air intake pipes are arranged, and the micro-airflow formed by the micro-hole jet on the branch pipe is used as the driving force. However, in actual operation, it is found that although the direction of the airflow is horizontally forward, the gas will quickly overflow the water surface after ejection. The upper and lower layers of the algae liquid are exchanged, and entrainment and mixing in the upper and lower directions are generated within a certain range, resulting in disordered liquid flow and poor circulation, which cannot well realize the reciprocating flow of the culture liquid in the entire culture pool

In addition, the entire system has complex pipelines and high energy consumption, which is not suitable for large-scale scale-up

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