The City of Albany, New York is implementing a water quality enhancement
program at its uncovered finished water storage facility, Loudonville Reservoir, including
a 40-mgd ultraviolet disinfection (UV) facility and a 20 million gallon covered storage
facility. The City is undertaking this program in anticipation of the proposed LT2ESWTR
and disinfection byproduct regulations and to supplement the existing chlorination
system and enhance water quality. The facility is designed to take into account bi-
directional flow through the UV units and large flow variations.
The first phase of the improvements is installation of four 10-mgd UV reactors.
Water will flow through the UV facility during both fill and draw cycles of the reservoir.
The UV units will be controlled based upon both flow rate and direction of flow. The UV
system is designed for a constant state of readiness to deliver disinfected water to
distribution. Phase I is scheduled for a late 2002 startup.
The second phase of the project consists of the construction of a 20 million gallon
covered storage facility at the Loudonville site. The covered storage facility will provide
the City with sufficient storage to meet diurnal requirements. The uncovered storage will
remain and UV treatment will be used only during periods when water is drawn from
uncovered storage. The new covered storage will also provide chlorine contact time for
water drawn from uncovered storage.
This paper details the complexities and challenges of using UV disinfection taking
into account bi-directional flow and the future change in operations when covered storage
is implemented. Demonstration of the successful implementation of this technology
there, and the lessons learned will provide a significant contribution to the industry.
Includes tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 410 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 10 |
| Published : | 11/01/2002 |
