Performance of Artificial Medium for Removal Algae in Source Water
人工介质对水源水中藻类去除特性研究

Pilot test was made on the removal algae in source water from Meiliang Bay in Taihu Lake through the use of enriched microbes by artificial medium. The results indicate that the algae removal efficiency enhances as the medium density and hydraulic retention time (HRT) increase. However the increasing of flow velocity doesn't reduce the algae removal effect. The removal rates of algae density, biomass, chlorophyll-a are 96.3%, 88.7%, 86.1% respectively when the medium density is 26.8% and HRT is 5d. It is evident that enriched microbes on the artificial medium can effectively remove the algae in the eutrophic lake. The transparence and intensity of illumination under water are improved obviously by artificial medium.