XPERIMENTAL STUDY ON PYROLYSIS TREATMENT FOR HARMLESSNESS AND RESOURCIFICATION OF OILY SLUDGE

Abstract

Abstract: To realize the harmlessness and resourcification of oily sludge, the physicochemical properties and pyrolysis performance of Xinjiang oily residues as well as adsorption performance of pyrolysis residue were studied through pyrolysis test. The sludge pyrolysis conditions were obtained and optimized. The results showed that the oil content in pyrolyzed residue dropped to 0.2% at the conditions of a temperature of 550 ℃, a heating rate of 5 ℃/min, a reaction time of 4 h, achieving the goal of harmless and standard discharge of oily sludge. By further adjusting sludge pyrolysis process conditions, at a temperature of 600 ℃, a heating rate of 15 ℃/min, a reaction time of 3 h, the COD adsorption of pyrolyzed residue was up to 167 mg/L. The pyrolysed residue can be used as an adsorbent for treating waste water, which can provide the basis for oily sludge reclamation.

Key words: oil sludge, oily sludge treatment, pyrolysis, adsorption

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XPERIMENTAL STUDY ON PYROLYSIS TREATMENT FOR HARMLESSNESS AND RESOURCIFICATION OF OILY SLUDGE

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