Title page for ETD etd-08012012-040713

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
  • Sewage sludge
Date of Defense 1979-04-05
Availability restricted
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.

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