The new method changed the way of oxygen's dissolving physically into the way of oxygen's absorbing chemically,increased the rate of oxygen transformation and utilizationjmproved the bioac tivation and subsiding behaviour,shortened the hydraulic retention time,reduced the occupied land and engineering investement.

Genetic algorithms for multivariable optimal control of activated sludge process;

Treatment of wastewater from different enterprises by biological iron strengthening activated sludge process;

Technological improvement of activated sludge process used for treatment of wastewater from a monosodium glutamate factory;

This paper summarizes the development of modeling a nd simulation technology of activated sludge method on wastewater treatment proc ess.

Absorption activated sludge method is efficient for sludge treatment.

In the wastewater treatment processes, the activated sludge method is a mostly useful method.

The active sludge method was used to treat the wastewater by analyzing the characteristics of organic wastewater produced through refining process in oil plant.

Analysis of flow patterns of activated sludge process in wastewater treatment;

Study on acclimating and filtrating the aerobic denitrifying bacteria from activated sludge;

Operational qarameters to keep high nitrification rate in activated sludge process under low temperature;