Algal-bacterial symbiotic device and application thereof in purifying air in closed space

The algae-bacteria symbiotic device treats VOCs and CO2 in enclosed spaces through a symbiotic system of microorganisms and Chlorella, achieving air purification and CO2 treatment. It solves the problem of air circulation in enclosed spaces and provides a low-cost, high-efficiency air purification solution.

CN117739454BActive Publication Date: 2026-06-19ZHEJIANG UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG UNIV OF TECH
Filing Date
2023-12-20
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing technologies are unable to effectively treat volatile organic compounds (VOCs) and CO2 in enclosed spaces at the same time, and conventional air purification equipment has high operating and maintenance costs and cannot meet the needs of air circulation in enclosed spaces.

Method used

The device employs an algae-bacteria symbiotic system, which utilizes a symbiotic system composed of microorganisms with specific pollutant degradation capabilities and Chlorella to purify gaseous pollutants within a specific structure. It also achieves air purification and CO2 treatment by absorbing CO2 and releasing O2 through algal photosynthesis.

Benefits of technology

It achieves rapid, green, low-carbon, and safe air treatment in enclosed spaces, with no VOCs or odorous gases in the exhaust air and CO2 concentrations below the environmental background level. It features low cost and high purification efficiency, making it suitable for air circulation in enclosed spaces.

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Abstract

This invention discloses an algae-bacterial symbiosis device and its application in purifying air in enclosed spaces. The algae-bacterial symbiosis device provided by this invention can not only purify odorous gases containing VOCs using microorganisms, but also fix CO2, the metabolic end product of odorous gases, through algal photosynthesis, while simultaneously treating CO2 generated by human activities. It purifies the air and provides sufficient oxygen, serving as a source of indoor air. The algae-bacterial symbiosis device operates at normal temperature and pressure, requiring only electrical energy input and no additional energy consumption (such as fuel), resulting in significant economic benefits and low-carbon characteristics. Furthermore, the device does not produce secondary pollution; the purified indoor air can be reused indoors, and the nutrient solution required for algae growth and metabolism can be recycled without external discharge. This algae-bacterial symbiosis device enables air circulation within enclosed spaces and features small size and high purification efficiency.
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