An experimental study of low concentration sludge settling velocity under turbulent condition.
Particle Image Velocimetry (PIV) was used to study the settling of activated sludge flocs under turbulent flow conditions. Experimental results showed that a larger particle diameter led to a higher settling velocity while the higher turbulence intensity led to lower settling velocity. Based on the measurements a mathematical relation has been derived which correlates the settling velocity for individual sludge flocs under turbulent conditions through a modified Vesilind equation. Settling velocity shows a power-type relation to sludge particle diameter and an exponential-type relation with turbulence intensity and sludge concentration.
Guo
Lisha
L
Department of Environmental Science, Chongqing University, Chongqing, China.
Zhang
Daijun
D
Xu
Danyu
D
Chen
Yuan
Y
D010316:Particle Size; D012212:Rheology / Q000379:methods; D012722:Sewage / Q000737:chemistry*; D014865:Waste Disposal, Fluid / Q000379:methods*
D012722:Sewage