Excess sludge has dual attributes of pollutant and resource.Utilizing its adsorption performance to remove refractory organic pollutants in wastewater is a good method for achieving"wastes-treat-wastes"and sludge resource utilization.This paper summarized the performance and mechanism of adsorption of refractory organic pollutants by excess sludge.The influencing factors of excess sludge adsorption were systematically analyzed in terms of the sludge characteristics and environmental conditions.Finally,the current research progress of sludge adsorption was analyzed using CiteSpace software.The development direction of sludge adsorption technology was also proposed,providing support for the research and engineering application of excess sludge adsorption technology.
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