Determination and discussion hydraulic retention time in membrane bioreactor system.
Based on the microorganism kinetic model, the formula for computing hydraulic retention time in a membrane bioreactor system (MBR) is derived. With considering HRT as an evaluation index a combinational approach was used to discuss factors which have an effect on MBR. As a result, the influencing factors were listed in order from strength to weakness as: maximum specific removal rate K, saturation constant Ks, maintenance coefficient m, maximum specific growth rate mu m and observed yield coefficient Yobs. Moreover, the formula was simplified, whose parameters were experimentally determined in petrochemical wastewater treatment. The simplified formula is theta = 1.1(1/beta-1) (Ks + S)/KX0, for petrochemical wastewater treatment K and Ks equaled 0.185 and 154.2, respectively.
Zhang
Shao-yuan
SY
Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences (CAS), Beijing 100085, China. syzhang@rci.rutgers.edu
van Houten
Renze
R
Eikelboom
Dick H
DH
Jiang
Zhao-chun
ZC
Fan
Yao-bo
YB
Wang
Ju-si
JS
D019149:Bioreactors; D007220:Industrial Waste; D007700:Kinetics; D008962:Models, Theoretical; D009716:Numerical Analysis, Computer-Assisted; D010578:Petroleum / Q000378:metabolism; D014874:Water Pollutants, Chemical / Q000378:metabolism; D018508:Water Purification / Q000295:instrumentation / Q000379:methods*
D007220:Industrial Waste; D010578:Petroleum; D014874:Water Pollutants, Chemical