The objective of this study was to quantify the assimilable organic carbon (AOC) in processing
water at several stages of a full-scale nanofiltration (NF) water treatment plant. The NF
membrane plant investigated was a 45,400 m3/day (12 mgd) water softening facility at Plantation
City in southern Florida. The average AOC concentration of raw feed water was estimated at
158 ug/L acetate-C. After pretreatment (acid and antiscalant addition), AOC levels increased by
12.7%, suggesting that pretreatment chemicals used to control scaling may enhance biofouling
potential. The results also demonstrated that nanofiltration was capable of effectively removing
63.4% of AOC. A decrease in membrane productivity over time (declined linearly at a rate of
approximately 1.3¿10-4 lmh/kPa per day) could be attributed primarily to biological fouling,
which was evidenced by considerable AOC consumption (1.17 kg acetate-C per day) in the
membrane system. Includes 23 references, tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 360 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 17 |
| Published : | 03/05/2003 |
