activated sludge oxidation的用法和样例：
- The optimal DO in activated sludge process and contact oxidation process are respectively 4 mg/L and 6mg/L.
- This study focuses on the integrated ferrate oxidation and activated sludge process for the mineralization of alachlor from aquatic environment.
- Treatment techniques of flax retting wastewater such as activated sludge,contact oxidation and comprehensive treatment were summarized in this paper.
- Over 300 strains of bacteria have been found in activated sludge.