SUPERCRITICAL WATER OXIDATIVE DECOMPOSITION METHOD FOR ORGANIC SLUDGE AND APPARATUS THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide a supercritical water oxidative decomposition method for organic sludge capable of eliminating the defect of the conventional oxidation treatment of organic sludge such as sewage sludge or the like using supercritical water and capable of suppressing ammonia, nitric acid, nitrous acid and total nitrogen in treated water. SOLUTION: In a method for reacting organic sludge and an oxidizing agent in supercritical water to perform the supercritical water oxidative decomposition of organic sludge, the solid concentration of organic sludge is set to 5% or more to perform supercritical water oxidative reaction at 450-550 deg.C.