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.
- Water source pollution
- Risk management
- Mathematical model
- Rotating flume
Yin, H., Xu, Z., Wang, R-Q., Li, H., & Schwegler, B. R. (2016). Modeling of pollutant removal by powdered activated carbon in a raw water aqueduct. Journal of Hydro-environment Research, 11, 16-28. https://doi.org/10.1016/j.jher.2016.01.001