Analysis on the filamentous sludge bulking in corridor-type aeration tank with plug flow form;

Sludge bulking and its control in UNITANK system under various operation conditions;

A study on sludge bulking and corruption in membrane bio-reactor;

Situation and development of bulking sludge study: General theories and control measures;

The factors and characteristics of bulking sludge are discussed on the characteristics of filamentous and bio-flocculate.

Bulking sludge used to describe the excessive growth of filamentous bacteria, is a common problem in activated sludge process.

However,there are such problems as too low TN and TP removal rate,sludge deposit in the bottom of oxidation ditch,and sludge expansion during the operation of the oxidation ditch.

Through analyzing the features of the sludge expansion and the factors influencing the sludge expansion,this paper introduces several effective methods for preventing the expansion of the filamentous microbes that is used commonly at present.

Based on the analysis and exploration of the cause and correlative theories of activated sludge expansion, this paper introduces emphatically some control methods for filament sludge expansion that is more prevalent and effective at present.

13 W/mL)and treatment times(30,60,90,120 and 150 s)under constant frequency of 20 kHz was used to treat bulking sludge.

Preliminary studies had been conducted to determine the correctness of the theory and technique of energy saving achieved by limited filamentous bulking under low DO using a lab-scale(A/O) reactor with real domestic wastewater as the influent.