Low power ultrasound can modify sludge bulking characteristics, improve sludgesettling and dewatering properties, so decrease sludge water content and sludge volume.
小功率超声波能够改善污泥的膨胀特性、提高污泥沉淀特性和脱水能力、降低污泥的含水率，达到减量的目的。
2
The gravity thickening property of sludge from phenol contaminated wastewater was described. It showed that the sludgesettling was in layered and compression settling statues.
对含酚污水污泥重力浓缩性能的研究表明：污泥沉降属于成层沉降和压密沉降状；
3
The effect of salinity variations on sludgesettling performance was investigated in the traditional activated sludge system when the toilet-flush seawater discharged into urban sewage system.