scholarly journals Wet Oxidation Treatment of Waste Activated Sludge of a Pharmaceutical Factory

2020 ◽  
Vol 735 ◽  
pp. 012068
Author(s):  
Pengfei Guo ◽  
Xu Zeng ◽  
Guodong Yao ◽  
Yangyuan Zhou ◽  
Jianfu Zhao
Keyword(s):  
Activated Sludge ◽  
Waste Activated Sludge ◽  
Wet Oxidation ◽  
Oxidation Treatment ◽  
Pharmaceutical Factory

Comparison of Aerobic and Anoxic-Aerobic Digestion of Waste Activated Sludge

1985 ◽  
Vol 17 (8) ◽  
pp. 1475-1478 ◽  
Author(s):  
A P. C. Warner ◽  
G. A. Ekama ◽  
G v. R. Marais
Keyword(s):  
Experimental Data ◽  
Activated Sludge ◽  
Waste Activated Sludge ◽  
Activated Sludge Process ◽  
Cycle Times ◽  
Waste Sludge ◽  
Volatile Solids ◽  
In Series ◽  
Flow Through ◽  
Theoretical Simulations

The laboratory scale experimental investigation comprised a 6 day sludge age activated sludge process, the waste sludge of which was fed to a number of digesters operated as follows: single reactor flow through digesters at 4 or 6 days sludge age, under aerobic and anoxic-aerobic conditions (with 1,5 and 4 h cycle times) and 3-in-series flow through aerobic digesters each at 4 days sludge age; all digesters were fed draw-and-fill wise once per day. The general kinetic model for the aerobic activated sludge process set out by Dold et al., (1980) and extended to the anoxic-aerobic process by van Haandel et al., (1981) simulated accurately all the experimental data (Figs 1 to 4) without the need for adjusting the kinetic constants. Both theoretical simulations and experimental data indicate that (i) the rate of volatile solids destruction is not affected by the incorporation of anoxic cycles and (ii) the specific denitrification rate is independent of sludge age and is K4T = 0,046(l,029)(T-20) mgNO3-N/(mg active VSS. d) i.e. about 2/3 of that in the secondary anoxic of the single sludge activated sludge stystem. An important consequence of (i) and (ii) above is that denitrification can be integrated easily in the steady state digester model of Marais and Ekama (1976) and used for design (Warner et al., 1983).

Electro-Dewatering Waste Activated Sludge: Lessons Learned from Real World Cases

2008 ◽  
Vol 2008 (3) ◽  
pp. 226-235
Author(s):  
Roger Paradis ◽  
Abderrahmane Dermoune ◽  
Scott F. McKay ◽  
Dany Sarrazin Sullivan
Keyword(s):  
Activated Sludge ◽  
Real World ◽  
Lessons Learned ◽  
Waste Activated Sludge
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