Assimilable organic carbon (AOC) and bacterial regrowth potential (BRP) of deionized water with
addition of some necessary nutrients and drinking water produced from raw water by a pilot-scale
treatment chain were analyzed. It was shown that phosphorus would be the limiting nutrient on
bacterial growth in the deionized water and AOC<sub>P17</sub> and BRP increased in direct proportion to the
increase of phosphorus concentration when the phosphorus concentration was low enough. The
favorable ratio of C:P for bacteria growth in oligotrophic water environment was around 100:1.5~2.0.
It was also shown that after 50ug/L PO<sub>4</sub>
<sup>3-</sup>-P was added to the drinking water investigated in the
experiment, AOC increased by 55% and BRP increased by 123%. This result indicated the possible
instance that phosphorus, the limiting nutrient on bacterial regrowth in drinking water, might exist
in some areas of China. This study demonstrated the possibility and feasibility to restrict microbial
growth in drinking water distribution systems by keeping TP in drinking water low enough.
Includes 22 references, table, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 310 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 9 |
| Published : | 11/02/2003 |
