AWWA ACE63251

The City of Albany (City), New York has taken a proactive approach to achieve its generalmission to provide the highest quality water possible to its customers by upgrading treatment andoperations at Loudonville Reservoir. The first phase of the water quality improvement projectwas the construction of a 40 million gallon per day (MGD) ultraviolet (UV) disinfection facility.The UV disinfection facility was installed to operate in conjunction with the existing chlorinedisinfection facility at the site. Incorporation of the UV facility provides multiple barrierdisinfection and facilitates compliance with upcoming requirements for uncovered storage underthe Long Term 2 Enhanced Surface Water Treatment Rule (LT2ESWTR). Construction of theUV facility began in August 2002, and full-scale continuous operation commenced on April 2,2003. As of the date of this report, the Loudonville Reservoir UV facility is the largest operatingUV disinfection facility in a drinking water application within New York State. Use of thistechnology in the drinking water industry continues to grow and will further expand after theLT2ESWTR is finalized.The Albany UV Treatment Facility was constructed and is operated as part of the City's waterquality enhancement program being implemented at Loudonville Reservoir. The UV facility ispart of a dual-barrier disinfection strategy to maximize protection of public health and is oneaspect of the City's ongoing risk mitigation efforts at Loudonville Reservoir to comply with theupcoming LT2ESWTR. The LT2ESWTR will require systems with uncovered finished waterreservoirs to: cover the finished water reservoir; treat reservoir discharge to the distributionsystem to achieve 4-log virus inactivation; or, receive a determination from the State orPrimacy Agency that existing risk mitigation is adequate. Elements of the City's current riskmitigation include:ongoing water quality monitoring; annual draining and cleaning of the reservoirs;periodic batch chlorination of the reservoirs;perimeter access fencing and 24-hour security surveillance;bird wires;diversion of runoff;re-chlorination; and, UV disinfection.In late 2002, the New York State Energy Research and Development Authority (NYSERDA)issued Program Opportunity Notice (PON) 723-02, Municipal Water and WastewaterTechnology, which specifically encouraged projects that targeted energy optimization/evaluationof UV disinfection systems. The City of Albany and Malcolm Pirnie realized the uniqueopportunity that the City's recently constructed UV facility offered with regard to data collectionand energy efficiency assessment and improvement. This project, entitled "Optimizing theEnergy Efficiency of UV Disinfection through On-Site Validation and control EquipmentMaintenance", was funded by NYSERDA under PON 723-02. The project began in late July2003. Much of this paper is based on the preliminary findings from that ongoing study. Includes 2 references, tables, figures.

Product Details

Edition:

Vol. - No.

Published:

06/01/2006

Number of Pages:

20

File Size:

1 file , 470 KB