To provide improving soil suppressing production of various growth obstacles brought by rich nutritive substances such as nitrogen and phosphoric acid even if used for a farmland as added fertile soil, increasing effect of suppressing drop in income, and easily at a low cost decomposing/purifying mud polluted with heavy metals such as lead and mercury and harmful matters such as PCB (polychlorinated biphenyls) and dioxins by using fight remediation effect.
This improving soil has, as the main component, mud with high moisture content such as bottom mud of lakes and marshes, and rivers, polluted sludge or sludge. The soil is formed by adding a water retaining agent to the mud and kneading the product, and used for farmlands as added fertile soil.
MARUYAMA KUNIO
AKIYOSHI YOSHIO
YOSHIDA MITSUTAKE
KANEKO FUMIO
