Abstract
In Hasunuma Seaside Park Pond where is located on the seafront Kujyukurihama coastal line in Chiba, water bloom has occurred in the past, the deterioration of the landscape and odor problems occurred. Dominant species of this Aoko are Cyanophyceae Anabeana spiroides. It has a feature called nitrogen fixation air, the explosive growth can be as long as there is phosphorus in the water. In this study, the shell collected from sandy beach on Kujyukurihama coastal line was applied as regional unused resources for nutrients remove by phosphorus adsorption. In a restraint rate of phosphorus, 30-40% of suppressant effects were seen. In the COD restraint rate, an increase of the phytoplankton was controlled by having sprayed a shell. Therefore, it showed a high price as quantity of dispersion increased.
