Modeling of pollutant removal by powdered activated carbon in a raw water aqueduct

TY - JOUR

T1 - Modeling of pollutant removal by powdered activated carbon in a raw water aqueduct

AU - Yin, Hailong

AU - Xu, Zuxin

AU - Wang, Ruo-Qian

AU - Li, Huaizheng

AU - Schwegler, Benedict R.

PY - 2016/6

Y1 - 2016/6

N2 - This study provides new parameters for the use of powdered activated carbon (PAC) in a raw water aqueduct under emergency response. Here, we developed a coupled model that dynamically predicts simultaneous PAC transport and pollutant removal in the water aqueduct. To calibrate the model, we have performed a Particle Image Velocimetry (PIV) settling experiment to determine the dynamic settling velocity, PAC deposition experiments in a rotating flume to quantify the bottom shearing effects, and jar tests to determine the dynamic pollutant adsorption rate. The model was validated against a field chemical oxygen demand experiment in a water aqueduct in Shanghai (China) and a laboratory nitrobenzene flume test. Then, given a certain pollution concentration arising from an accidental pollution event, the model could be used to predict the optimal flow rate and PAC dosage for the establishment of mitigation measures.

AB - This study provides new parameters for the use of powdered activated carbon (PAC) in a raw water aqueduct under emergency response. Here, we developed a coupled model that dynamically predicts simultaneous PAC transport and pollutant removal in the water aqueduct. To calibrate the model, we have performed a Particle Image Velocimetry (PIV) settling experiment to determine the dynamic settling velocity, PAC deposition experiments in a rotating flume to quantify the bottom shearing effects, and jar tests to determine the dynamic pollutant adsorption rate. The model was validated against a field chemical oxygen demand experiment in a water aqueduct in Shanghai (China) and a laboratory nitrobenzene flume test. Then, given a certain pollution concentration arising from an accidental pollution event, the model could be used to predict the optimal flow rate and PAC dosage for the establishment of mitigation measures.

KW - Water source pollution

KW - Risk management

KW - Mathematical model

KW - Rotating flume

KW - PIV

KW - Nitrobenzene

U2 - 10.1016/j.jher.2016.01.001

DO - 10.1016/j.jher.2016.01.001

M3 - Article

SN - 1570-6443

VL - 11

SP - 16

EP - 28

JO - Journal of Hydro-environment Research

JF - Journal of Hydro-environment Research

ER -