NOVELTY - Improved process of treating sludge to provide a stable product involves (a) mixing the sludge with at least a first alkaline material and a second alkaline material in an amount sufficient to (i) raise the solids content of the mixed material to at least 50 wt.%; (ii) raise the pH to at least 12; and (iii) raise the temperature to at least 70 degrees C by exothermic reaction of the alkaline materials with the water in the sludge to produce a resultant mixture; and (b) pasteurizing the resultant mixture at, at least 70 degrees C and a pH of at least 11 to obtain the stable product.    USE - For treating sludge selected from raw primary wastewater sludge, enhanced primary treated sludge, digested wastewater sludge, secondary wastewater sludge, combined wastewater sludge, a product of industrial process that includes microbial cells or components, bioorganic sludges or organic sludges to provide a stable product, which is used as a beneficial soil or fertilizer for agricultural lands (claimed).    ADVANTAGE - The process eliminates at least the mechanical drying step to provide a stable beneficial product. By increasing the alkaline mixture dosages significantly over those according to prior art, the pathogen destruction, solids levels and product enhancement value goals can be achieved with a reduction in capital and operating costs. As the temperature of the mixture increases from 52 degrees C as taught by the prior art to over 70 degrees C by addition of the high-reactivity material, ammonia gas is released at a rate several fold over the prior art processes. The amount of the low-reactivity material, e.g. cement-kiln dust required in the process is increased over the amount of use in prior art applications. This provides an environmentally improved advantage of manufacturing by-product that would alternatively require disposal at a landfill.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) apparatus for treating sludge to provide a stable product for use as a beneficial soil or fertilizer for agricultural lands comprising mixing unit for mixing the sludge with at least a first alkaline material and a second alkaline material in an amount sufficient to (i) raise the solids content of the mixed material to at least 50 wt.%; (ii) raise the pH to at least 12; and (iii) raise the temperature to at least 70 degrees C by exothermic reaction of the alkaline materials with the water in the sludge to provide a resultant mixture; and pasteurizing unit for pasteurizing the resultant mixture at, at least 70 degrees C and a pH of at least 11 to obtain the stable product;    (2) portable apparatus for providing the resultant mixture comprising transportation unit associated with the mixing unit.