In the present work, the performance of a waste-activated sludge (WAS) treatment using a novel rotational hydrodynamic cavitation generator (RHCG) was investigated. To verify the performance, a comparison with an ultrasonic device was conducted in four experimental cases at the same specific energy input using three assessment factors. The RHCG consisted of a rotor and three covers with inserted dimples. Ultrasonication was performed using a general ultrasonic bath. The experimental parameters were established to calculate the specific energy input of the sludge passing through the RHCG for a total of 5, 10, 15, and 20 times. Disintegration performance using particle size distribution and SVI, solubilization rate using soluble COD, and oxidation performance using total COD and VSS reduction rate were analyzed as assessment factors. For oxidation and particle disintegration, the RHCG showed overwhelming performance and was superior to the ultrasonic device at low energy input. The tCOD and VSS of the sludge treated five times in the RHCG were reduced by 52.9 and 66.0 %, respectively, and the median particle size of the sludge treated 10 times in the RHGG was reduced by 92.7 %. Otherwise, at comparable specific energy inputs, sludge treated by the ultrasonic device were reduced by 0, 26.4, and 67.6 %, respectively. However, due to the contradictory interactions of particle disintegration and oxidation, the two treatment methods showed similar performance in terms of solubilization rate and reached up to 42.3 and 41.4 % in the RHCG and ultrasonic device, respectively. In the present work, the RHCG is proposed as a new novel WAS treatment technique.

在目前的工作中，研究了使用新型旋转水力空化发生器（RHCG）的废物活化污泥（WAS）处理的性能。为了验证性能，使用三个评估因子，在四个具有相同比能量输入的实验案例中，与超声设备进行了比较。RHCG由一个转子和三个带有凹窝的盖子组成。使用普通的超声波浴进行超声波处理。建立实验参数以计算通过RHCG的污泥的比能输入，共计5、10、15和20次。分析了使用粒度分布和SVI的崩解性能，使用可溶COD的增溶速率以及使用总COD和VSS还原速率的氧化性能作为评估因素。对于氧化和颗粒分解，RHCG表现出压倒性的性能，并且在低能量输入下优于超声设备。在RHCG中经过5次处理的污泥的tCOD和VSS分别降低了52.9％和66.0％，在RHGG中经过10次处理的污泥的中值粒径降低了92.7％。否则，在可比的比能量输入下，通过超声设备处理的污泥分别减少了0％，26.4％和67.6％。然而，由于颗粒崩解和氧化的相互矛盾的相互作用，两种处理方法在增溶率方面表现出相似的性能，并且在RHCG和超声设备中分别达到了42.3％和41.4％。在目前的工作中，RHCG被提议作为一种新型的WAS治疗技术。RHCG具有压倒性的性能，并且在低能量输入下优于超声设备。在RHCG中经过5次处理的污泥的tCOD和VSS分别降低了52.9％和66.0％，在RHGG中经过10次处理的污泥的中值粒径降低了92.7％。否则，在可比的比能量输入下，通过超声设备处理的污泥分别减少了0％，26.4％和67.6％。然而，由于颗粒崩解和氧化的相互矛盾的相互作用，两种处理方法在增溶率方面表现出相似的性能，并且在RHCG和超声设备中分别达到了42.3％和41.4％。在目前的工作中，RHCG被提议作为一种新型的WAS治疗技术。RHCG具有压倒性的性能，并且在低能量输入下优于超声设备。在RHCG中经过5次处理的污泥的tCOD和VSS分别降低了52.9％和66.0％，在RHGG中经过10次处理的污泥的中值粒径降低了92.7％。否则，在可比的比能量输入下，通过超声设备处理的污泥分别减少了0％，26.4％和67.6％。然而，由于颗粒崩解和氧化的相互矛盾的相互作用，两种处理方法在增溶率方面表现出相似的性能，并且在RHCG和超声设备中分别达到了42.3％和41.4％。在目前的工作中，RHCG被提议作为一种新型的WAS治疗技术。