Electric flocculation and air floatation combined continuous microalgae harvesting device and method

An electrocoagulation air flotation and harvesting device technology, applied in the biological field, can solve the problems of microalgae harvested water pollution, non-continuous production, high flocculation dosage, etc., and achieves convenience for large-scale production, improved electrolysis efficiency, and low price Effect

Active Publication Date: 2015-07-29
湖南湘江水务有限责任公司
View PDF5 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method has simple process, short reaction time and good flocculation effect; however, too much flocculation dose is required, which will not only increase

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electric flocculation and air floatation combined continuous microalgae harvesting device and method
  • Electric flocculation and air floatation combined continuous microalgae harvesting device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The present invention will be further described below in conjunction with accompanying drawing.

[0026] The device of the present invention is as attached figure 1 And attached figure 2 shown.

[0027] The microalgae harvesting method of the present invention is to export the algae liquid from the microalgae photosynthetic reaction system at a certain flow rate of 5L / MIN, and simultaneously export the bittern from the bittern water storage tank at a flow rate of 0.01L / MIN, and the algae liquid and the bittern The mixture flows through a runway pool and is fully mixed, and enters the deep groove at the end of the runway pool, which is the algae liquid to be collected; start the electrocoagulation-air flotation combined microalgae continuous harvesting device of the present invention, and the algae liquid to be collected passes through the algae The liquid inlet 1 enters the electroflocculation air flotation area at a flow rate of 5.01L / MIN. When the liquid level in t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses an electric flocculation and air floatation combined continuous microalgae harvesting device and method. The device comprises an electric flocculation and air floatation zone, a harvesting zone, a water outlet zone and an air flocculation zone which are connected sequentially. A mixture of an algae solution and bittern water flows through a raceway pond to be sufficiently mixed and enters a deep groove in the tail end of the raceway pond; to-be-harvested algae is pumped from an algae solution inlet, lifted to a electrolysis plate and flocculated by hydroxide colloid, released by an electrode, of iron; flocculated and agglomerated microalgae cell clusters are adsorbed to float upwards by microbubbles released by a dissolved gas release port, are prompted to be further agglomerated, flow into the harvesting zone, are scraped into an algae storage tank by an algae scraping machine and are sent to a dehydration drying procedure; clear water at the bottom of the harvesting zone enters the water outlet zone through a gap below a baffle II. The harvesting efficiency of microalgae is greatly improved; the device needs few investments, occupies a small area, is simple to operate, has the advantages of low energy consumption, high efficiency and environmental protection and is suitable for large-scale production.

Description

technical field [0001] The invention belongs to the field of biotechnology, and relates to a continuous microalgae harvesting device and a method thereof. Background technique [0002] The high cost of harvesting microalgae has always been one of the bottlenecks restricting its large-scale production. At present, the main methods for harvesting microalgae include membrane filtration, centrifugation and flocculation. Membrane filtration not only has very low production efficiency, but also the membrane is easily fouled and clogged, and the cost of membrane regeneration or renewal is also high. Therefore it is not suitable for industrialized production application. Centrifugation is a more commonly used method. Although it does not need to add other chemical reagents, the operation is complicated, the energy consumption is large, and the cost is high. The Chinese invention patent "a microalgae collection device for a tubular centrifuge (CN201220618371.2)" discloses a microal...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C02F9/06
Inventor 刘玉环王允圃邹亚文巫小丹阮榕生郑洪立万益琴彭红刘君英
Owner 湖南湘江水务有限责任公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap