September 2012, Vol. 24, No.9


The U.S. Environmental Protection Agency (EPA) in July announced $950,000 in funding to improve water quality using green infrastructure in 17 communities. The funding is intended to increase incorporation of green infrastructure into stormwater management programs, protect water quality, and provide community benefits, including job creation and neighborhood revitalization.

EPA is awarding the funds to diverse communities across 16 states. Some communities — such as Beaufort, S.C., and Neosho, Mo. — are small towns in urban growth areas interested in preserving and protecting their healthy waterways. Others — such as Camden, N.J., and Pittsburgh — are large cities interested in adding green infrastructure into their redevelopment projects to restore degraded urban waters and help revitalize their communities. The selected communities also provide an opportunity to demonstrate the potential of green infrastructure across a range of climate zones.

Nancy Stoner, EPA’s acting assistant administrator for Water, announced the funding at the Water Environment Federation (Alexandria, Va.) Stormwater Symposium 2012, which was held in Baltimore. “Polluted stormwater can be harmful to the health of our nation’s waterbodies,” she said. “These funds will help expand the use of green infrastructure, revitalize local neighborhoods, and help safeguard people’s health and the environment.”


Rendac Son (Son, Netherlands) and the Dutch water technology company Paques (Balk, Netherlands) have agreed to build a new wastewater treatment plant that will produce green energy. Rendac Son collects and processes all animal residual material of the Netherlands, such as animal carcasses and slaughterhouse waste.

In the new plant, anaerobic treatment will be combined with the ANAMMOX® process. The produced biogas will be converted into both electricity and heat using a combined heat and power plant. The amount of electricity produced and the savings, compared to the current treatment plant, are equal to the energy consumed by approximately 3000 households.


The South San Joaquin Irrigation District (Ripon, Calif.) this summer dedicated its water-efficient pressurized irrigation network. Designed to be an industry model for water efficiency, the system will provide growers in the district’s Division 9 with individualized, automated irrigation access through online and mobile technology. The new system was designed and constructed during a 3-year period; it was developed and implemented as a cooperative effort between Stantec Consulting (Edmonton, Alberta) and the district.

With the new system, irrigation water will be distributed to 76 customers across 1540 ha (3800 ac) of California’s Central Valley via 31 km (19 mi) of pressurized pipeline through an automated, calculated channel. Using an online system similar to an airline ticketing platform, users log in to schedule water deliveries. Each farmer then selects from available delivery dates and later receives alerts via e-mail and text message before and after delivery to confirm volume and flow-rate data.


The Washington (D.C.) Suburban Sanitary Commission (WSSC) awarded a $70 million “indefinite delivery, indefinite quantity” contract for sanitary sewer repairs, replacement, and renewals in environmentally sensitive areas to Inliner (Paoli, Ind.), a division of Layne Christensen Co. (Mission Woods, Kan.). The contract includes an option for an additional $10 million in work.

This is the third indefinite delivery, indefinite quantity contract that WSSC has awarded to Layne’s Inliner division since 2011 and raises the combined contract value with WSSC to up to $120 million, excluding WSSC options for additional work. Work is in the early stages on the first two WSSC contracts.

WSSC is one of the largest water and wastewater utilities in the country, serving almost 2 million residents. Its principal service area is Prince George’s and Montgomery counties in Maryland.


The East Cherry Creek Valley Water and Sanitation District (Aurora, Colo.) added pump-control and surge-anticipation relief valves at a new high-service water delivery pump station. The membrane water treatment facility, part of the Northern Water Supply Project, uses reverse-osmosis treatment equipment to purify well water.

Three sets of pump-control valves and two surge-anticipation relief valves have been supplied by Pipestone Equipment (Golden, Colo.). Each set includes a vertical turbine pump with a capacity of more than 15,140 L/min (4000 gal/min) and a 410-mm (16-in.) ValMatic rubber seated ball valve with variable-speed actuator from SIPOS Aktorik (Altdorf, Germany).

The new equipment will provide the capability to gradually control water to the pipeline during pump startup and normal shutdown. Each actuator has been specifically programmed to operate the ball valve for each project to create a linear acceleration and deceleration of the water during operation.  


The Mattabassett District Water Pollution Control Facility (Cromwell, Conn.) awarded a $93 million contract to general contractor C.H. Nickerson & Co. (Torrington, Conn.) to renovate and upgrade its facility. The project is expected to take 3 years to complete and will include a full renovation and expansion of the existing facility, as well as an upgrade of its nitrogen removal processes.

The facility currently is designed to treat an average flow of 75,700 m3/d (20 mgd) and serves approximately 170,000 ratepayers in New Britain, Berlin, and Cromwell, as well as parts of Middletown, Newington, Rocky Hill, and Farmington.


This summer, Servizi Ambientali SPA, the environmental services provider in the area around Loano, Italy, celebrated the inauguration of its newly upgraded and expanded wastewater treatment facility in the town of Borghetto Santo Spirito. The expansion makes the plant the second largest municipal membrane bioreactor facility in Italy, according to a GE Power & Water (Trevose, Pa.) press release.

The facility was constructed 3 years ago to treat 7000 m3/d. Following the expansion, the facility handles a maximum flow of about 35,000 m3/d. It serves approximately 140,000 residents in the towns of Borghetto Santo Spirito, Loano, Toirano, Boissano, Balestrino, and Ceriale.

“Our wastewater treatment plant went from simple primary treatment to advanced biological processes with membranes allowing us to reach high-level effluent quality,” said Giovanni Paganelli, CEO of Servizi Ambientali SPA. “It is located on the seacoast and discharges into a sensitive ecosystem in a tourist region. Our newly upgraded plant now results in the best effluent water quality ever achieved, enabling us to serve a larger population and at the same time, diverting the cleaned wastewater for nonpotable reuse.”

GE supplied Servizi Ambientali SPA with membrane bioreactor technology and equipment featuring reinforced hollow-fiber membranes. The upgrade features four ZeeWeed 500D trains, 24 cassettes, and 1152 modules.


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