| 摘要 |
PURPOSE:To obtain a soil improving agent effectively usable in acid or low- nutrient soil and reduce pollution by kneading an organic sludge with an ash, such as boiler ash, while heating and stirring, removing moisture and offensive smell and forming the resultant kneaded mixture into a powdery or granular shape. CONSTITUTION:The objective soil improving agent obtained by mixing (A) an organic sludge generated in food processing factories by an activated sludge method, etc., with (B) an ash, such as municipal waste incineration ash or boiler ash, e.g., at >=150 deg.C, while heating and stirring under atmospheric pressure, evaporating moisture and offensive smell and powdering or granulating the kneaded mixture. Furthermore, the mixture of the components (A) with (B) is alkaline at pH 9-12 and the resultant improving agent is capable of regenerating acidified soil to pH6-7 in which microorganisms become active. |
