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Small-fall open pond for massively cultivating microalgae as well as use method and application thereof

A large-scale culture and open pool technology, applied in the direction of microorganism-based methods, biochemical equipment and methods, specific-purpose bioreactors/fermenters, etc., can solve problems such as difficult to intensify mixing, reduce harvesting costs, Effect of reducing water volume and increasing algae cell density

Active Publication Date: 2011-01-19
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in a traditional open pool with an average depth of 20-30 cm, the mixing of the culture solution is completely dependent on the natural flow formed by the agitator (impeller), and it is difficult to strengthen the mixing.

Method used

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  • Small-fall open pond for massively cultivating microalgae as well as use method and application thereof
  • Small-fall open pond for massively cultivating microalgae as well as use method and application thereof
  • Small-fall open pond for massively cultivating microalgae as well as use method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Spirulina culture is carried out in the raceway culture tank. The top view of the runway pool is as follows figure 1 In the picture on the left, the circumference of the flow channel is 208 meters and the width is 3 meters. The agitator is 4 sets of steel impellers driven by a rotating shaft. Each impeller has 4 blades, which are 90 degrees apart from each other. The blades of adjacent impellers are staggered by 45 degrees. degree angle, the rotating shaft is driven by an AC motor, and the rotation radius of the stirrer is 50cm. The profile of the agitator and the pool bottom structure below it is as follows: Figure 4, wherein, the height difference 11 at the bottom of the pond at the bottom of the pool at the outlet 9 of the agitator (downstream of the agitator) and the algae liquid inlet 10 of the agitator (upstream of the agitator) is 5 cm, from the outlet at 9 of the agitator The flow path along the liquid flow direction to the inlet 10 of the agitator is a circu...

Embodiment 2

[0036] Spirulina culture is carried out in the raceway culture tank. The top view of the runway pool is as follows figure 1 In the picture on the left, the circumference of the flow channel is 208 meters and the width is 3 meters. The agitator is 4 sets of steel impellers driven by a rotating shaft. Each impeller has 4 blades, which are 90 degrees apart from each other. The blades of adjacent impellers are staggered by 45 degrees. degree angle, the rotating shaft is driven by an AC motor, and the rotation radius of the stirrer is 50cm. The profile of the agitator and the pool bottom structure below it is as follows: Figure 5 , wherein, the height difference 11 of the bottom of the pond at the algae liquid outlet 9 places (downstream of the stirrer) of the stirrer and the bottom of the pond at the algae liquid inlet 10 place (upstream of the stirrer) of the stirrer is 3 cm; There is an arc groove 7 with a radius of 51em and a depth of 15em. When the agitator 3 rotates, the t...

Embodiment 3

[0040] Spirulina culture is carried out in the raceway culture tank. The top view of the runway pool is as follows figure 1 In the picture on the left, the circumference of the flow channel is 105 meters and the width is 2 meters. The agitator is 4 sets of steel impellers driven by a rotating shaft. Each impeller has 4 blades, which are 90 degrees apart from each other. The blades of adjacent impellers are staggered by 45 degrees. degree angle, the rotating shaft is driven by an AC motor, and the rotation radius of the stirrer 3 is 50cm. The cross-section of the agitator 3 and the pool bottom structure below it and the trap type carbon replenishment device 12 used in conjunction with it is as follows Figure 6 . Wherein, the height difference 11 at the bottom of the pool at the algae liquid outlet 9 places (downstream of the agitator) of the agitator and the algae liquid inlet 10 (upstream of the agitator) of the agitator is 2 cm, from the algae liquid of the agitator The f...

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Abstract

The invention belongs to the field of massive microalgae cultivation, in particular relating to a small-fall open pond for massively cultivating microalgae as well as a use method and an application thereof. Based on the open pond of the invention, the open pond comprises a stirrer, wherein the stirrer is rotated, the altitude of the pond bottom at the algae liquid outlet of the stirrer is maximum and the difference between the maximum altitude and the altitude of the pond bottom at an algae liquid inlet is less than 5cm, thus the rest of a runner is sloped, and liquid flows in a converse direction. The pond bottoms between the outlet of the stirrer and the inlet of the stirrer are in inclined plane or cambered surface connection. The altitude of the runner of the pond bottom gradually decreases from the algae fluid outlet of the stirrer to the algae liquid inlet of the stirrer along the liquid flow direction. The small-fall open pond for realizing even cultivation of a microalgae superficial layer provided by the invention can greatly improve the algae cell intensity, and reduce the water body driving energy consumption. In addition, the improvement of the algae cell intensity can greatly reduce the water body amount, thus reducing the harvesting cost of the algae cells by a large margin.

Description

technical field [0001] The invention belongs to the field of large-scale cultivation of microalgae, and in particular relates to a low-drop open pool for large-scale cultivation of microalgae and its use method and purpose. Background technique [0002] Microalgae has high application value. Microalgae cells are rich in various high value-added biological substances such as protein, amino acid, carbohydrate, vitamin, antibiotic, high unsaturated fatty acid, polysaccharide and pigment, and some microalgae also have very High hydrocarbon production capacity (such as botrytis), has a good application prospect in energy utilization. In today's increasingly severe global food and energy crisis, the development and utilization of microalgae biological resources undoubtedly have important social value and economic significance. [0003] The large-scale culture of microalgae can be divided into closed and open. Open refers to the use of open pool culture devices, such as track poo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12M1/00C12M1/02C12N1/12C12R1/89
CPCC12M23/18C12M27/02C12M27/20
Inventor 丛威刘明鲍亦璐
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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