Multilevel large capacity tank-type photobioreactor capable of inhibiting growth of microalgae on wall

Abstract

The invention provides a multilevel large capacity tank-type photobioreactor capable of inhibiting growth of microalgae on wall. The photobioreactor is in a shape of a right trapezoid, and comprises three levels in structure, according to different lighting. The top part is an open raceway pond model; and an air area between the top liquid surface and the reactor prevents growth of microalgae on wall. An inwardly penetrated part of an inclined plane of the trapezoidal structure is in a flat reactor structure pattern; bottom of the area is provided with a gas distribution plate; and during aeration, bubbles rise along the inclined plane to inhibit attachment of the microalgae on the wall. The top of the inclined plane is provided with surface wall cleaning device, which is used for cleaning inner wall of the reactor with a vertical surface. A cold light source is arranged on the position unreachable by incident natural light in the reactor, and the cold light source is provided a transparent lampshade with micropores on the wall thereof; an air inlet pipe is arranged on the external end of the lampshade, so as to introduce air into the lampshade for wall surface aeration, and prevent attachment of the microalgae on the wall. The reactor greatly increases cultivation scale, as well as inhibits growth of microalgae on wall, and realizes long-time microalgae cultivation with high efficiency.

Description

technical field [0001] The invention relates to the field of photobioreactors. Background technique [0002] Microalgae is a kind of micro-organism with small individual and photoautotrophic. The cell size is in the micron level, and its body is rich in nutrition. The cells contain: protein, lipid, algal polysaccharide, β-carotene, various inorganic elements (such as Cu , Fe, Se, Zn, etc.) and other high-value nutrients and chemical raw materials make it have good development prospects in the fields of biological bait, food, medicine, genetic engineering, and liquid fuel. [0003] At present, two modes of cultivating microalgae are open and closed, specifically the open raceway pool and the closed photobioreactor. The open culture mode is easily disturbed by external bacteria, has large seasonal changes, and difficult to control the culture conditions. Not suitable for cultivating high value algae species. At present, there are mainly the following types of photobioreactor...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the current photobioreactors are faced with small volume and difficult to cultivate on a large scale; at the same time, it solves the problem that the microalgae grows on the wall and affects its photosynthesis

Images