Type of Document	Dissertation
Author	Sujarittanonta, Suthirak
URN	etd-08012012-040713
Title	The effects of nickel on the completely mixed activated sludge process
Degree	PhD
Department	Civil Engineering
Advisory Committee	Advisor Name Title Sherrard, Joseph H. Committee Chair Drew, Stephan W. Committee Member King, Paul H. Committee Member Randall, Clifford W. Committee Member Wightman, James P. Committee Member
Keywords	Sewage sludge
Date of Defense	1979-04-05
Availability	restricted
Abstract The purpose of this investigation was to conduct batch and continuous flow laboratory experiments with bench scale activated sludge units to determine the effects of nickel on the completely mixed activated sludge process. The model units were located in a constant temperature room maintained at 20±2°C. The batch reactors were operated under acclimated and shock loaded condition with various nickel concentration to determine its effects on the rate of COD removal. The continuous flow units were operated until steady state conditions were obtained at each mean cell residence time studied and then data were recorded for an approximate 7 days period and averaged to obtain one steady state data point. Nickel was added to the waste water at various concentration to determine its effects on COD removal efficiency, degree of nitrification and on the biokinetic constants Ymax and kd.
Files	Filename       Size       Approximate Download Time (Hours:Minutes:Seconds)     28.8 Modem   56K Modem   ISDN (64 Kb)   ISDN (128 Kb)   Higher-speed Access  LD5655.V856_1979.S84.pdf 7.94 Mb 00:36:46 00:18:54 00:16:32 00:08:16 00:00:42 next to an author's name indicates that all files or directories associated with their ETD are accessible from the Virginia Tech campus network only.

If you have questions or technical problems, please Contact DLA.