PROCESS FOR PREPARING A STORAGE-STABLE AND BIOLOGICALLY ACTIVE SOIL IMPROVING AGENT

摘要

1. A method for the manufacture of a storable and biologically active soil improvement agent from a mixture consisting of crushed garbage and partly dehydrated sewage treatment sludge of approximately 50 to 90 percents by weight water content, wherein said mixture is subjected to deformation by pressing it down to about 1/3 of its volume without any water discharge, and the thus obtained briquettes are dried in air by storing them in rotting stacks having a temperature of from about 50 degrees C to 70 degrees C and a moisture of less than 55 percents by weight, characterized in that said rotting stacks are subjected to an additional moistening which begins with the third to the fifth day of rotting and which is lasting from seven to fourteen days.