NOVELTY - The primary coagulant is added to the organic sludge in organic wastewater, and aggregated. A secondary coagulant having epsilon-polylysine, and natural occurring polymer is added to aggregated sludge, and aggregated. Aggregated sludge is concentrated or dehydrated. Concentrated sludge is heated in presence of microorganisms and dried. Fermentation-decomposition is carried out in fermented material, and organic sludge is processed.    USE - For processing organic sludge in organic wastewater such as human waste, city sewage, agricultural wastewater, and livestock farming wastewater.    ADVANTAGE - The processing method is safe, and efficient, and is suitable for producing compost having low moisture content and bio-degradability. The coagulant used in the processing method is easily biodegradable and helps in nurturing plants.    DETAILED DESCRIPTION - The primary coagulant having a microorganism production polysaccharide as main component is added to the organic sludge in organic wastewater produced after physical processing or biological waster treatment, stirred and aggregated in primary agglutination-reaction. A secondary coagulant having epsilon-polylysine as main component which carries out cross-linking polymerization, and natural occurring polymer is added to the aggregated sludge, stirred and aggregated in secondary agglutination-reaction. The aggregated sludge is concentrated or dehydrated. The concentrated sludge is stirred and heated in the presence of microorganisms and dried in primary fermentation process. The fermented material is heated in the presence of microorganisms, and fermentation-decomposition is carried out in secondary fermentation process, and the organic sludge is processed. An INDEPENDENT CLAIM is included for processing system of organic sludge.    DESCRIPTION OF DRAWING(S) - The figure shows the profile of compost installation. (Drawing includes non-English language text).    aggregation stirring tanks (1,2)    dehydrator (3)    fermenter (4)    sludge storage tank (9)