NOVELTY - Process for sludge destruction, involves diluting sludge to 1000-5000 mg/l chemical oxygen demand (COD), reacting it with a bacterial population at high oxygen levels greater than 1 ppm to form a reaction vessel mixed liquor, under conditions of high-intensity mixing.    USE - For the biological destruction of organic sludge (claimed) ejected from intensive animal rearing units, biological treatment of industrial and domestic waste water, domestic sewage treatment systems, chemical and petrochemical slurries, pharmaceuticals, brewery, paper industry, sugar industry, oil and gas plants, food processing and manufacture plants, agricultural slurries and intensive vegetable growing units.    ADVANTAGE - The sludge destruction process does not use any chemical additives. The high-intensity mixing is sufficiently intense to break up the flocs of bacteria formed within the reactor. The intensive-mixing produces a shearing force within the reactor system generated suitably by an aeration source and directed at the sludge and the bacterial population. This ensures that the sludge and bacterial population are always maintained in a finely divided form and in maximum contact with each other. The high-intensity mixing also assists in the substantial destruction of sludge. The combination of high-intensity mixing and bacterial digestion of sludge improves the efficiency of the sludge destruction process. The sludge destruction process is economical and provides an efficient nitrogen removal regime. The process also removes nutrient products such as nitrates, phosphates and heavy metals. No offensive odor and organic sludges are produced for disposal, thereby making the process environmentally acceptable particularly in urban areas.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) a plant for biological destruction of organic sludge using microorganisms, having a reactor, an aeration unit and a unit for intensive mixing of the reactor contents. The reactor receives liquor and retains it in contact with a bacterial population. The aeration unit provides oxygen levels above 1 ppm within the reactor sufficient to maintain bacterial population growth;    (2) use of the sludge destruction process for the biological destruction of sludge; and    (3) use of the plant for biological destruction of organic sludge.    DESCRIPTION OF DRAWING(S) - The figure shows the schematic representation of the plant for carrying out the sludge destruction process.