摘要：Sludge activated carbon was prepared by using wastewater treatment sludge as the main raw material and sulfuric acid as the activator. The physicochemical properties of sludge activated carbon were characterized by specific surface area measurement and scanning electron microscopy. Catalytic supercritical water oxidation was used to treat coal mine sewage, and the effect of sludge activated carbon on COD and chroma removal in coal mine sewage was studied. The test results show that the removal rate of COD and chromaticity of the activated carbon prepared by the experiment decreases with the increase of pH. and increases with the increase of dosage. Catalytic supercritical water oxidation can cf-fectively remove COD and chromaticity and reach the national first-level A standard for comprehensive wastewater discharge standards.
