Effective　regeneration　of　powdered　activated　carbon　(PAC)　is　the　key　to　reduce　the　operating　cost　of　the　PAC　in　wastewater　treatment　processes.　In　this　study,　volatile　acetone　and　semi-volatile　aniline　were　selected　to　investigate　the　regeneration　characteristics　of　ultrasonically　enhanced　low-temperature　thermal　process.　The　results　showed　that　the　regeneration　efficiency　of　the　PAC　that　had　adsorbed　aniline　or　acetone　increased　with　the　increase　in　ultrasonic　power,　and　optimal　value　of　frequency　and　regeneration　times　were　determined.　The　concentration　and　properties　of　organic　solvents　had　a　significant　influence　on　the　ultrasonic　regeneration　process.　With　the　increase　in　heating　temperature　and　regeneration　time,　the　regeneration　efficiency　increased,　but　the　loss　of　mass　of　the　saturated　PAC　increased　noticeably.　With　the　combination　of　ultrasonic　treatment　in　a　solvent　with　low　temperature　heating,　the　PAC　regeneration　efficiency　was　successfully　improved,　and　the　PAC　mass　loss　rate　was　noticeably　reduced.　The　microjet,　shock　wave,　and　cavitation　effects　produced　by　ultrasonic　treatment　restored　the　specific　surface　area　of　the　PAC,　expanded　its　mesopore　volume,　and　increased　the　pore　diameter.　A　reasonable　selection　of　the　regeneration　solution　and　optimization　of　the　ultrasonic　treatment　conditions　could　create　favorable　conditions　for　subsequent　low　temperature　thermal　regeneration.