Combined with submerged biofilm process,ozone was used as cell lysis agent to treat excess sludge,then the ozonated supernatant was returned to the aeration tank.

• 采用臭氧作为剩余污泥的细胞裂解剂,并与淹没式生物膜工艺相结合进行污泥减量的实验研究,臭氧化后的污泥上清液回流入曝气池与污水合并处理。