Title page for ETD etd-11152013-040418

Type of Document Master's Thesis
Author Bandak, Nazih
URN etd-11152013-040418
Title Effect of mixing intensity on polymer conditioning of sludges
Degree Master of Science
Department Civil Engineering
Advisory Committee
Advisor Name Title
J. T. Novak Committee Chair
C. W. Randall Committee Member
W. R. Knocke Committee Member
  • Sewage sludge
Date of Defense 1986-07-05
Availability restricted
Conditioning studies were conducted on several water and

wastewater sludges using polymers to determine the effect of

high-intensity mixing on floc formation and breakup. Mechanisms

acting in particle coagulation were also investigated.

A rapid mixing apparatus was used in conditioning the

sludge to simulate the high velocity gradients encountered

in most dewatering equipment. Anionic and cationic polymers

of varying molecular weights and an inorganic coagulant were

chosen as the conditioning agents. Dewatering rates were

measured by the capillary suction time (CST) apparatus. The

effect of rapid mixing on the polymer efficiency was evaluated

by premixing the polymer, using the same mixing apparatus,

prior to applying it to condition the sludge.

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