Surface growth type culture plate, culture unit and culture system and method

Abstract

The invention provides a surface growth type culture plate with a membrane-coated porous plate structure. The culture plate comprises one layer of porous plate, wherein the porous plate is prepared from a rigid water absorption and water seepage material; the porous plate has a first pore diameter; each of the two sides of the porous plate is coated with one layer of ultra-micro-pore membrane; each ultra-micro-pore membrane has a second pore diameter; the second pore diameter is less than the first pore diameter; and the size of the second pore diameter of each ultra-micro-pore membrane can prevent bacteria or algae from entering and allows water and inorganic salt to seep. A culture unit comprises at least one culture plate, a solution supplying device and at least one culture solution recycling device, wherein the liquid supplying device is used for providing a culture solution to the culture plate; and the culture solution recycling device is arranged at the lower end of the culture plate. Furthermore, the invention relates to a surface growth type culture system containing the culture unit. According to the surface growth type culture plate with the membrane-coated porous plate structure, the problems of an existing immersion type microalgae culture photobioreactor system that the manufacturing and maintenance costs are expensive, the space utilization rate is low, the production efficiency is low and the energy consumption is high are solved.

Description

technical field [0001] The invention relates to a surface-growing culture plate, a culture unit, a culture system and a method of a film-covered porous plate structure used for microalgae culture. Background technique [0002] Algae is a kind of aquatic phytoplankton capable of photosynthesis, and microalgae is a type of single-celled algae whose individual is so small that it can only be observed under a microscope. Some microalgae are rich in protein and can be used as aquatic bait or livestock feed (such as spirulina); more importantly, some microalgae can synthesize a large amount of secondary metabolites, such as oil, carotenoids, polysaccharides, etc. , These substances are often biologically active substances with extremely high economic value, and can be used in functional foods, food additives, pharmaceuticals, bioenergy and other fields. In particular, the large-scale cultivation of microalgae to extract microalgae oil and then convert it into biodiesel is conside...

AI Technical Summary

Problems solved by technology

However, this type of soft material has the following disadvantages: (1) Low mechanical strength, requiring complex supporting and fixing devices, not suitable for large size and enlargement of space height, and can only be made into low and thin structures; ( 2) The surface humidity is not uniform, the growth of microalgae is not firm, and it is easy to be affected by the environment and fall off; (3) It is not resistant to recycling and needs to be replaced frequently, which increases the cost; (4) It is easy to drop impurities such as fibers, which makes the harvested microalgae Pollution; (5) poor water absorption and water retention performance, which is not conducive to the growing culture medium consumption requirements of microalgae growth and increased energy costs, and (6) the biocompatibility and chemical resistance of these flexible materials when used as a culture carrier Corrosion and other aspects have certain limitations

Therefore, this type of culture system is still not suitable for large-scale production

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