Related Experiment Video
Updated: Aug 8, 2026

Biogas Purification through the use of a Microalgae-Bacterial System in Semi-Industrial High Rate Algal Ponds
Published on: March 22, 2024
Settling characteristics of problem algae in the water treatment process
1School of Environmental Science and Engineering, Inje University, Gimhae, South Korea.
Abstract:
The settling velocity or removal rates of problem algae in the water treatment process and their flocculants were measured with settling column (SETCOL) and fluorometric method. Our research who were centred on the algal density and shape affecting the settling. The settling velocities of large algae ranged from 0.1 cm/h to 2.6 cm/h, whereas those of small algae were below 1.0 cm/h. The settlings of algae in the stationary growth phase significantly increased and dead algae corresponded with the declining algae. The extent of deformation, which was expressed as the coefficient of form resistance of the algae had the great influences upon the settling. The most extreme deformed algae were needle-shaped ones like Synedra acus, which was known to be a problem in water treatment processes in Korea. Changes in the settling velocity of algae were correlated with algal volume and morphology rather than cell density.
Related Concept Videos
Coagulation
Biological Treatment of Effluent and Waste Water
Other Algae
Microbial Wastewater Treatment
Biofuels
Microbial Bioremediation of Hydrocarbons

