Research Progress on Heavy Oil Wastewater Treatment Technology
Addressing the challenges posed by heavy oil wastewater,characterized by its wide range of sources,complex composition,high concentration of pollutants,small difference in oil-water density,high toxicity,poor biodegradability,and high treatment costs,this paper systematically reviews the sources,components,characteristics,and treatment difficulties of heavy oil wastewater.It summarizes the progress in four key treatment technologies used in heavy oil wastewater treatment:conditioning demulsification,flocculation/air flotation,biodegradation,and oxidation or adsorption,comparing the advantages and disadvantages of each method.Additionally,the paper suggests shortening the process flow,combining physical and chemical methods to reduce the introduction of new pollutants,using targeted oxidation techniques to remove biotoxicity and hard-to-degrade organic substances to enhance the biodegradability of wastewater,and strengthening biological treatment to improve treatment efficiency.These suggestions aim to provide a reference for green,low-carbon,cost-effective,and efficient treatment of heavy oil wastewater.
heavy oil wastewaterconditioning and demulsificationflocculation/air flotationbiodegradationoxidationadsorption
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维普
