In a constantly evolving regulatory environment, drinking water utilities consistently face
increasing requirements for disinfection of pathogens while decreasing requirements for
health threatening disinfection byproducts (DBPs). The disinfectants that the industry have
relied heavily upon in the past, chlorine and chloramines, can no longer meet the requirements
by themselves. Therefore, the time for the use of integrated disinfection has come. The
disinfectants normally used in water treatment (free chlorine, chloramines, chlorine dioxide,
ozone, and ultraviolet disinfection (UV)) all have advantages and disadvantages. The key, therefore, is to take
advantage of positive characteristics of multiple disinfectants, resulting in improved finished
water quality. Using integrated disinfectants also has the benefit of providing a multiple
barrier of protection to disinfection while providing a possible capital and operating cost
savings. Utilities can also improve public perception through the use of sequential
disinfectants by providing increased disinfection effectiveness while limiting the formation of
health threatening DBPs. Two example AWWA Research Foundation projects using integrated disinfectants, one
evaluating chlorine dioxide with ozone and one evaluating ozone with UV, have demonstrated
the benefits and practical application of integrated disinfection. Includes reference, table.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 270 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 8 |
| Published : | 06/15/2003 |
