The City of Phoenix, Arizona, has participated for
several years in the Central Arizona Salinity Study (CASS), the Multi-State Salinity
Coalition (MSSC), and numerous related initiatives and efforts to understand the sources,
impacts, and implications of increasing levels of total dissolved solids (TDS) in reclaimed water.
A number of possible TDS strategies are currently being developed and evaluated by the
City to address TDS holistically. These include source control, treatment at potable
water plants, sanitary sewer point and non-point sources, and treatment of reclaimed
water to reduce TDS concentrations. The City conducted a study to
gather information regarding the
implementation of policies to control TDS discharges associated with residential point-of-use water
softening and other treatment systems.
As with many water quality problems, a multi-point approach is necessary to control TDS
to maximize the value of developed water resources. This presentation will provide an
overview of the City's concerns regarding TDS, the efforts involved at controlling it,
reasons for why some control strategies do not have support, and a summary of the
Citywide Point-of-Use Water Softener and Treatment Study results. The study estimated
TDS contributions from various sources, identified TDS control programs, described
alternatives to ion exchange water softening, evaluated potential TDS reduction program
components, and identified TDS goals (concentration targets) for reclaimed water uses. Includes abstract only.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 720 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 1 |
| Published : | 11/01/2009 |
