Method, device and system for separating microalgae

A separation device and microalgae technology, applied in the direction of microorganism-based methods, biochemical equipment and methods, microorganisms, etc., can solve the problems of high quality microbubbles, high cost, unfavorable floc water outflow, etc.

Active Publication Date: 2011-07-20
ENN SCI & TECH DEV
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Problems solved by technology

[0003] The problems in the separation and collection of microalgae have always been the bottleneck restricting the development of the microalgae industry
The above-mentioned U.S. patents have the following deficiencies: First, the preparation of dissolved air water requires a dissolved air pump or a pressure-resistant storage tank, and the current domestically produced dissolved air pump produces large bubbles, which cannot achieve the ideal air flotation effect. Small micro-bubbles meet the requirements of air flotation, but the cost is higher, so this method has higher requirements on the quality of micro-bubbles and higher requirements on equipment; secondly, the final product of dissolved air flotation is the ab

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  • Method, device and system for separating microalgae
  • Method, device and system for separating microalgae
  • Method, device and system for separating microalgae

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Embodiment Construction

[0104] The present invention will be further described below in conjunction with the detailed description of the drawings and the embodiments / test examples, but it should be understood that these detailed descriptions of the drawings and the embodiments / test examples are only used for more detailed descriptions, and should not be understood are not intended to limit the invention in any way.

[0105] The present invention provides general and / or specific descriptions of the materials and test methods used in the tests. While many of the materials and methods of manipulation which are employed for the purposes of the invention are well known in the art, the invention has been described here in as much detail as possible. It will be clear to those skilled in the art that in the following, unless otherwise specified, the materials and operation methods used in the present invention are well known in the art.

[0106] 1. Method, device and working principle of the present inven...

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Abstract

The invention relates to a method, a device and a system for separating microalgae, in particular to a method for separating the microalgae from microalgae suspension. The method comprises the following steps of: a) providing algae-containing suspension; b) adding a surfactant or solution of the surfactant into the suspension to dissolve or disperse the surfactant; c) filling bubbles from the bottom of the suspension in which the surfactant is dissolved to ensure that the bubbles are contacted with the microalgae in the rising process; d) ensuring that the microalgae are adsorbed on the bubbles to form aggregate which comprises the bubbles and the algae; e) floating the aggregate to the surface of the suspension to form a foam layer; and f) collecting the foam layer formed by the aggregate. The method, the device and the system have low equipment requirements, are economic and are favorable for scale-up production and industrial application.

Description

Technical field: [0001] The invention relates to a microalgae separation technology, in particular to a technology for separating microalgae by using a surfactant. Background technique: [0002] Microalgae are a class of individual tiny photoautotrophic and / or heterotrophic single-celled organisms, which have the characteristics of wide distribution, various species, high photosynthetic efficiency, fast growth rate, and strong adaptability. Annual CO fixation by microalgae 2 It accounts for about 40% of the global net photosynthetic output. In addition, it is rich in esters, hydrocarbons, proteins, soluble polysaccharides, and high-value natural pigments such as astaxanthin and β-carotene. Therefore, it is important in environmental protection, energy and health. Today, when the problem is attracting much attention, microalgae are getting more and more attention. [0003] The problems in the separation and collection of microalgae have always been the bottleneck restrictin...

Claims

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Application Information

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IPC IPC(8): C12N1/12C12R1/89
Inventor 王琳朱振旗
Owner ENN SCI & TECH DEV
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