AWWA MTC50272

The hybrid process resulting from the application of powdered activated carbon (PAC) to ultrafiltration (UF) membranes is currently being used to reduce the concentrations of organic compounds in the effluents of ultrafiltration membrane plants. A mathematical model describing the adsorption of organic compounds when PAC is applied to low pressure membrane filtration systems had been developed and verified in previous studies. The model used equilibrium and kinetic parameters independently determined in batch experiments for the target organic compound in the water of interest. The objective of this study was to illustrate the use of this mathematical model to assess the effects of various process designs and operating procedures on the removal efficiency for natural organic matter. This analysis includes assessment of the role of the duration of the filtration cycle, the effect of reactor configuration (PAC dosed directly into the UF reactor versus PAC dosed to a CSTR installed before the UF loop), and the effect of PAC dosing procedures (PAC addition at a constant rate versus one-time addition). Includes 9 references.

Product Details

Edition:

Vol. - No.

Published:

01/01/1999

File Size:

1 file , 74 KB