Abstract
Waterbloom has occurred due to eutrophication in lakes during the summer season. Because some cyanophyceae has the function of air nitrogen fixation ability, they can grow even if the phosphorus is in the water. The objective of this study is to remove phosphorus by using the shells as regional unused resources for eutrophication countermeasure in the eutrophocated pond, and it aimed to investigate the influence of the burning treatment. In addition, adsorption isotherm was calculated by microcosm culture experiments of bottom sediment material improvement. And adsorption effect of the nutrient in each processing was assessed. Results showed that, inhibition rate of phosphorus showed a high percentage with much quantity of dispersion. By assessment with Langmuir’s adsorption isotherm, high adsorption effect was provided in calcium dispersion with phosphorus and in regional unused resources with nitrogen. And phytoplankton succession was observed with phosphorus adsorption by the sprinkled shells.
