Winter 2009

A Quarterly Newsletter of the Instrumentation Testing Association

ITA Enews

Spring 2011

Instrumentation Testing Association  (ITA)


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ITA Enews is a newsletter of the Instrumentation Testing Association
A non-profit technical and educational association dedicated to promoting reliability and performance of environmental instrumentation and automation technologies. Learn More About Becoming A Member

Walter S. Lund, CPMM of Virginia’s Prince William County Service Authority is Elected to ITA’s Board

“I look forward to a great year in gathering and sharing any information with the ITA members and staff .”

             alter S. Lund, CPMM, Maintenance Manager for the Prince William County Service Authority’s Water Reclamation Facility in Woodbridge, Virginia, was nominated and elected by ITA members to ITA’s Board of Directors.

Walt brings with him more than 36 years of experience in the wastewater industry including more than 23 years supervision of mechanical, instrumentation and electrical disciplines. 

Walter started working in the Operations and Maintenance departments of Virginia’s Greater Manassas and Yorkshire Sanitary District in February of 1975. He was involved with the daily operations and maintenance of plant equipment. Walter worked his way up the management/operations ladder acquiring his Class I Virginia wastewater license in 1986.

The Greater Manassas Sanitary District joined forces with Occoquan, Woodbridge, Dumfries, Triangle Sanitary District and became Prince William County Service Authority in 1983.

With the opportunity of the Maintenance Supervisor position and a Maintenance Department being developed, in 1988 Walter S. Lund was chosen as the Maintenance Supervisor for the H.L. Mooney Water Reclamation Facility.

Walter S. Lund, CPMM
Water Reclamation Facility Maintenance Manager
Prince William County Service Authority
Woodbridge, Virginia, USA

The H.L. Mooney WRF (pictured and described below) went through two major expansions. In 1997 the facility was expanded from 12 MGD to 18 MGD. In 2007 expansion started at 18 MGD to 24 MGD to meet the new Chesapeake Bay requirements of lowering nitrogen levels.  The H.L. Mooney upgrade was the first wastewater design/build contract in Virginia to meet the new requirements. 

Walter’s Maintenance Supervisor position included supervision of three discipline divisions;

1) Mechanical,

2) Instruments, and

3) Electrical.


In 2000, Walter became a Certified Plant Maintenance Manager through the Association for Facilities Engineering. Walt has been a member of ITA since 2003.  Please join in welcoming Walter S. Lund to ITA’s Board of Directors.

H.L. Mooney Water Reclamation Facility

The H. L. Mooney Water Reclamation Facility (WRF) treats wastewater from the eastern half of Prince William County of Northern Virginia (a metropolitan area outside of Washington D.C.) serving more than 35,000 residences and businesses.

The H. L. Mooney WRF utilizes a Biological Nutrient Removal (BNR) activated sludge nitrification/denitrification process in conjunction with advanced (tertiary) treatment, including chemical addition of ferric chloride and polymers to remove phosphorus and enhance settling and lime for pH control. The H. L. Mooney WRF consistently reduces the level of phosphorous in its effluent from an average of 7.5 mg/l to 0.1 mg/l.

Prior to discharging effluent into the Neabsco Creek, the water is irradiated with ultra violet light for disinfection and then oxygenated. The waste byproducts of the process—settled and undigested biosolids—are dewatered using high-speed centrifuges and then incinerated within a fluidized bed incinerator. The inert ash from this process is disposed of at the County Landfill. The facility produces a high quality effluent consistently averaging biochemical oxygen demand (BOD) and suspended solids discharges of under 3 mg/l. This represents a 99 percent reduction of pollutants in wastewater received by the Facility. Annually, the Mooney facility removes approximately 140 tons per year of phosphorous and 730 tons per year of nitrogen from the water before it is discharged into Neabsco Creek, a Potomac River tributary.