METHOD FOR IMPROVING ENVIRONMENT IN WATER OR ON WATER BEACH

摘要

PPROBLEM TO BE SOLVED: To provide a method for improving an environment in water or on a water beach, by which excellent effects are obtained for the construction of culture beaches, shallows/zostera-fields/tidelands, the prevention of shore denudation, the prevention of red tides, the prevention of blue tides, and the like, and which can be performed at a low cost and does not cause the damages to organisms and persons with a laying material. PSOLUTION: This method for improving the environment in the water or on the water beach is characterized by setting blast furnace air-granulated slag as an environment-improving material in the water or to the water beach. The blast furnace air-granulated slag has a nearly spherical shape and a smooth surface, is thereby little liable to damage persons and organisms, when laid in the water or on the water beach, has a function for cleaning bottom sediments/water quality due to CaO and a function as a silicate ion-releasing source, hence has excellent performances as the laying material for laying on the water bottom and water beach, and can provide living environments suitable for various organisms including bottom-living organisms living in sands. PCOPYRIGHT: (C)2004,JPO&NCIPI