System for purifying a polluted air by using algae

摘要

A system for purifying a polluted air by using algae such as Spirulina is capable of reducing carbon dioxide (CO2), nitrogen oxide (NOx) and/or sulfur oxide (SOx) in the polluted air and generating oxygen. That is, this system comprises a culture tank filled with a culture fluid including the algae, an air supply unit for forcing the polluted air into the culture fluid to dissolve carbon dioxide and nitrogen oxide and/or sulfur oxide in the culture fluid, and a lighting unit for radiating a light to the culture fluid. By radiating the light to the culture fluid in the presence of carbon dioxide, photosynthesis of the algae is promoted to convert carbon dioxide into oxygen. In addition, the algae use the nitrogen oxide and/or sulfur oxide as a nutrient during the photosynthesis. As a result, the present system can efficiently purify the polluted air to generate a purified air, which is rich in oxygen.