Effects of temperature

turbidity and pH on oxygen transition in aerated water under different conditions were studied.The results showed that the oxygen transfer coefficient(KLa) increased with the increasing temperature

while the oxygen transfer rate(υOTR) decreased except with an increasing tendency at around 25 ℃.In turbid water

KLa and υOTR are positively correlated to the level of turbidity.The pH value can also influence KLa and υOTR at certain degree.As the pH value was increased

KLa and υOTR firstly decreased and then increased

and had minimum values at pH 7.0.