Activated carbon (AC) has been widely used in water treatment because of its rich pore structure, large specific surface area, simple production process, low preparation cost and wide source of raw materials. In this paper, the regeneration efficiency of low-frequency ultrasonic pretreatment (40kHz, 115Μw/cm³) on biological activated carbon (BAC) is investigated, and its principle is discussed. The results show that the micro-jet and micro-liquid flow with high temperature and pressure produced by micro-bubble rupture during ultrasonic cavitation play an important role in the regeneration of activated carbon. And optimum ultrasonic treatment time is determined (5min). In addition, the preparation of cu-loaded activated carbon by ultrasound-microwave method is investigated to pretreat wastewater produced in paracetamol production. The results show that Cu and Cu oxides can be loaded on activated carbon surface by ultrasonic-microwave pretreatment. Finally, the pretreatments of activated carbon by physical, chemical and physical-chemical method are investigated. The effects of the above different pretreatment methods on the structure and adsorption properties of activated carbon are compared and evaluated.

活性炭（AC）具有丰富的孔结构，大的比表面积，简单的生产工艺，较低的制备成本和广泛的原材料来源，已被广泛用于水处理中。本文研究了低频超声预处理（40kHz，115Mw / cm ^3）的再生效率。）对生物活性炭（BAC）进行了研究，并对其原理进行了讨论。结果表明，超声空化过程中微泡破裂产生的高温高压微喷流和微液流在活性炭再生中起重要作用。并确定最佳的超声处理时间（5分钟）。此外，研究了用超声波-微波法制备负载铜的活性炭以预处理扑热息痛生产中产生的废水的方法。结果表明，通过超声波-微波预处理可以将铜和铜的氧化物负载在活性炭表面。最后，研究了通过物理，化学和物理化学方法对活性炭进行预处理的方法。