The new artificial
turf field at Trinity-Pawling School
will feature a subsurface stormwater management system by CULTEC (Brookfield,
Conn.). Engineers at KG&D Architects (Mt. Kisco, N.Y.) collaborated with
contractors from Fastracs Inc. (Red Hook, N.Y.) to design and install the
system to provide stormwater detention. The team chose the CULTEC’s Recharger
330XLHD®, an efficient chamber that has a lower volume in the early
stages of a storm. The design called for a total of 95 chambers in five rows.
The system features
two inlets and one outlet. The turf field has an under-drain network throughout
its surface, which connects to a header pipe along the south side of the field
and leads into the south side of the system. The second inlet pipe is located
at the north side of the system, and handles runoff from a new parking area,
walkways, spectator areas, and existing roof drainage systems. Runoff from the
parking lot is pretreated in dry swales adjacent to the parking area before
discharging into the underground chambers.
approximately a day and a half to install the entire system, and students were
able to use the new facility in the fall of 2013.
UTS Biogas Ltd.
(Cambridge, England), a subsidiary of Anaergia Inc. (Ontario, Canada),
delivered a large-scale anaerobic digestion facility to Shropshire Energy
(Shrewsbury, England). The facility enables the generation of 2.4 MW of
renewable electricity, heat for facility operations, and the production of
digestion system will produce nearly 20,000 MWh of renewable electricity and
22,000 MWh of renewable heat each year — enough to fully power and heat the
company’s 120 Mg/week, mushroom-growing operation, as well as export an
additional 8700 MWh of renewable electricity to the power grid. The amount sent
to the grid can meet the needs of more than 4000 homes. The anaerobic digestion
process also will create a high-grade fertilizer that is used to support local
The anaerobic digestion
facility, located near East Cambridgeshire, England, will convert more than
20,000 Mg/yr of waste potatoes, onions, beets, and radishes as well as 36,500
Mg/yr of corn silage into renewable energy and heat. The vegetable waste is
fed, alongside the corn, into large fully sealed anaerobic digesters and
biodegraded in the absence of oxygen through a natural decomposition process.
Anaergia Inc. also
announced it invested in a large-scale biosolids processing facility in the
City of Rialto, Calif. Having acquired the infrastructure and assets of the
$160 million facility previously owned by EnerTech Environmental Inc.
(Atlanta), Anaergia plans to improve efficiencies, upgrade technologies, and
create a state-of-the-art organics processing facility. These investments will
enable Anaergia to expand facility processing capacity in the same footprint,
while helping cities manage biosolids challenges and divert organic waste from
Upgrades to the
Rialto facility are expected to be completed in 2015 and will be centered on
the construction of advanced anaerobic digesters that will generate renewable
energy for facility operations, reduce the volume of biosolids required for
heat drying, and enable the acceptance of additional organic wastestreams at the
(Calif.) Regional County Sanitation District
awarded a contract to CH2M Hill (Englewood, Colo.) to provide design and
services during construction for the new primary effluent pumping station at
its Sacramento Wastewater Treatment Plant. The project is part of SRCSD’s $1.5
billion to $2.1 billion EchoWater Project, a major effort to upgrade the
district’s water resource recovery facilities and make them the most advanced
the EchoWater Project will enable SRCSD to meet the state’s treatment
requirements by removing nitrogen and ammonia from wastewater before it enters
the Sacramento River. Additionally, the project provides SRCSD more water reuse
and recycling opportunities for irrigation.
contract, CH2M Hill will design the new primary effluent pumping station to
provide the necessary lift within the existing facility’s process stream to
accommodate the new treatment process. The project also includes extending the
existing primary effluent channel, constructing new diversion pipelines to
connect the primary effluent channel to the emergency storage basins, rerouting
existing dual 1829-mm (72-in.) diversion lines via a new juncture structure to
a 2134-mm (84-in.) chlorinated final effluent line, and controlling odors
within the new facilities.
Water Reclamation District of Greater Chicago
TrojanUV (London, Ontario, Canada) to provide one of its water resource
recovery facilities (WRRFs) with an ultraviolet (UV) light disinfection system.
The system, a
TrojanUVSigna™, will be installed at the Terrence J. O’Brien Water Reclamation
Plant in Skokie, Ill. The activated sludge, single-stage nitrification facility
currently discharges secondary effluent into the North Shore Channel of the
Chicago River, which is part of the Chicago Area Water System that is
designated for primary contact recreational use. Recent regulations have
required that the WRRF add a disinfection process to further enhance effluent
supply14 UV banks equipped with TrojanUV Solo Lamp™ technology. The system will
have a flow capacity of 1.7 billion L/d (450 mgd), making it one of the 10
largest WRRFs in the U.S. Of the 30 largest WRRFs in the U.S., Chicago is the
first to use UV technology.
The upgrade of the
Maleny Sewage Treatment Plant in Queensland, Australia,
will include the GE (Trevose, Pa.) LEAPmbr membrane bioreactor
wastewater-treatment technology. The technology is expected to enable the water
resource recovery facility (WRRF) to double the amount of water treated to 1
million L/d (0.264 mgd).
regulations and expected population growth led Unitywater (Caboolture,
Queensland, Australia) to expand the existing Maleny WRRF. The membrane
bioreactor technology will help Unitywater to meet environmental guidelines for
safe, high-quality water in a recreational area as well as for discharging
upstream of a water supply catchment.
(Perth, Western Australia, Australia), an engineering, construction,
maintenance, and industrial services company, will conduct the upgrade to the
Xylem Inc. (White Plains,
N.Y.) reduced the energy consumption at a cargo center pump station at Heathrow
Airport (London) by 50%, according to a comparison study conducted by the
airport’s Water Services Department. This was achieved by installing Xylem’s
Flygt Experior wastewater pumping system.
The Water Services Department
commissioned Xylem to evaluate the airport’s wastewater pumping system in the
cargo center area, which hosts heavy volumes of traffic and nonstop activity on
a daily basis. Following the evaluation, the Xylem team was charged with
developing and implementing a reliable and energy-saving wastewater pumping
Xylem installed two pumps featuring
nonclog technology and two SmartRun intelligent pump controllers in the
wastewater wet well of the cargo area. The two pump controllers monitor the
specific energy use of the pumps and continually adjust the pump speed to
ensure that the minimum amount of energy is being used for all pump cycles
without the need for a site visit or system recalibration.
installation, the pumps in the cargo holding area have settled into running at
33 to 37 Hz, reducing the energy consumption of the pump station by
approximately half. Maintenance call-out incidents also have been eliminated.
The European Union
approximately 1 million euros to fund research and
development into a Danish invention for water resource recovery facilities
(WRRFs) that makes traditional WRRFs up to 25 times more efficient and reduces
costs by as much as 40% due to substantial energy savings. The new system
enables WRRFs to produce industrially exploitable fertilizer by accumulating
Inventor Karsten Poulsen patented his
method for biologically separating ammonium from wastewater 15 years ago, but
recently developed a method whereby the ammonium can be collected instead of
released as nitrogen. In principle, a carbon dioxide-neutral wastewater
treatment process is thereby achieved.
The system is
expected to be marketed as soon as 2014 under the name GAAR 15 from GreenAqua
Solutions (Hobro, Denmark), and the partners in the project are negotiating
with interested buyers. The system also is expected to be exported soon to
other European countries, such as Germany, which already has a well-functioning
structure for wastewater treatment.
(Cary, N.C.) won a contract to provide a Hydrotech Discfilter system as
part of the Phase 2B improvements project for a Camas, Wash., water resource
recovery facility. Kruger will provide two discfilter units along with a
control system. The system is designed to filter a peak flow of 22,700 m3/d
(6.0 mgd) and provide an effluent total suspended solids concentration equal to
or less than 10 mg/L. The system will replace the facility’s current cloth
media filtration system. Its compact footprint will enable it to be installed
within the facility’s existing cloth media filtration system.
St. Louis Sewer District
(MSD) selected Black &
Veatch (Overland Park, Kan.) to lead its $35-million incinerator air emissions
upgrade program. The program is needed to meet new federal air emission limits
for existing and new sewage sludge incinerators (SSIs).
In 2011, the U.S.
Environmental Protection Agency issued new air emission limits for existing and
new SSIs, setting a compliance deadline of March 21, 2016. Black & Veatch
is working with MSD to install advanced wet scrubbers at its Bissell Point and
Lemay water resource recovery facilities (WRRFs) to meet these new maximum
achievable control technology (MACT) standards. Wet scrubber technology
provides advanced control of particulates, metals, and acid gases from the
incinerator exhaust gas to reduce air emissions. Together, the Bissell Point
and Lemay WRRFs incinerate 75% of all solids generated by the MSD service area.
Black & Veatch
is providing engineering services for preliminary and final design. The project
is expected to bid to general contractors in March 2015. Black & Veatch
will provide engineering assistance to MSD during construction.
expected to begin by May 1, 2015, with completion in time to test the scrubbers
prior to the March 2016 deadline for compliance.