Denmark) was a primary supplier for a large-scale project to refurbish and
expand the Kubratovo water resource recovery facility (WRRF) in Sofia, Bulgaria
— the largest WRRF in the Balkans.
The WRRF at Kubratovo,
which has been in operation since 1984, treats domestic wastewater, process
water, and stormwater from Sofia. Pumping 480,000 m3 of wastewater
from a population equivalent of 1.3 million people, the Kubratovo WRRF meets
the wastewater requirements of 90% of the city’s population. On March 30, 2009,
the facility began a massive refurbishment and expansion project. Grundfos
contributed products, technology, and project and logistics know-how to the
The project included
refurbishment and reconstruction of four primary sedimentation tanks, six
biotanks, six secondary sedimentation tanks, and mud and floating substances
pits. Additionally, two new secondary sedimentation tanks, a pumping station
for recirculation of activated sludge, a mud water tank, a reagent plant, and a
power substation were built. Additional underground infrastructure that was
approximately 4 km in length also was built. It included pipelines for process
water. The second part of the project included construction of the Novi Iskar
SPS, a town in western Bulgaria, and refurbishment of the collection system in
Following completion of
the planned construction work, the capacity of the plant was increased to a
maximum stormwater flow of 850 L/s. Also, 5 km of collection system in the town
of Novi Iskar were refurbished. A rising main was built using fiberglass pipes
with a total length of 5.6 km.
The entire project was completed on time 20 months later,
at the end of 2010.
Layne Heavy Civil Inc.
Ind.) will design and construct a wastewater collection and transmission
project for the Cudjoe Regional Wastewater System in Monroe County, Fla.
Engineering on this $80 million design–build project has begun, and
construction is scheduled to begin in July and last approximately 2.5 years.
The project is the largest ever for Monroe County in terms of value and number
of customers affected.
The State of Florida
mandated that all customers within Monroe County be connected to an advanced
water resource recovery facility before Dec. 31, 2015. This project will help
eliminate untreated wastewater from polluting the waters of the Florida Keys.
The project consists of
wastewater service to the islands of Ramrod Key, Lower Sugarloaf Key, Little
Torch Key, and Big Pine Key. The collection system affected includes
approximately 152,400 linear m (500,000 linear ft) of gravity sewer and
low-pressure grinder sewer, with 40 neighborhood lift stations that serve
approximately 4500 customers. The transmission system consists of four master
pump stations and a polyvinyl chloride and high-density polyethylene pipeline
laid along U.S. Highway 1.
Wastewater is being
transferred to the central Cudjoe treatment facility, currently under
The project agreement was
signed with the Florida Keys Aqueduct Authority, which is acting as program
manager on behalf of the Monroe County Commission, which is funding the
H20 Innovation Inc.
City, Quebec) last year designed and installed a new municipal water treatment
plant for Emmons County, N.D., to treat water drawn from the nearby Missouri
River. The new plant relies on a filtration system by Dow Water & Process
Solutions (Edina, Minn.) that combines ozone pretreatment for removal of
organics. DOW Ultrafiltration membranes remove pathogens and solids down to the
0.03-µm level, and DOW FILMTEC™ reverse-osmosis membranes remove salinity,
additional taste, and odor.
(Englewood, Colo.) was selected by South Oil Co. (Basra, Iraq) to provide
project management consultancy services for the Iraq Common Seawater Supply
Project (CSSP). CH2M Hill will manage approximately $3.5 billion to $4 billion
worth of Phase 1 of CSSP, which involves the treatment, transmission, and
distribution of 5.2 million barrels of water per day of seawater. The ultimate
build-out capacity of the facility is anticipated to be approximately 12.5
million barrels of water per day.
CSSP is considered a
critical infrastructure project by the Iraqi government and the Ministry of
Oil, because it will provide much-needed injection water to the oil fields of
southern Iraq. The oil fields will use the seawater for enhanced oil recovery —
water is injected into the reservoir, enabling increased oil production. The
project officially started in January and is scheduled to be ready for
operation in mid-2017, after which CH2M Hill will provide continued services
and support through operations and maintenance.
As CSSP progresses, CH2M
Hill will provide high-priority engineering site surveys; environmental,
safety, and health impact assessment; front-end engineering design;
construction packages for site preparation and nonprocess buildings; and
engineering, procurement, and construction packages for the process, power
plant, pumping facilities, and pipelines.
Egyptian Ethylene and
(ETHYDCO; Cairo, Egypt) awarded a contract to Aquatech
(Canonsburg, Pa.), a provider of water purification technology for industrial
and infrastructure markets, to design and install a water resource recovery
facility that includes the first integrated zero-liquid-discharge (ZLD) plant
The ZLD plant will be
installed at ETHYDCO’s petroleum derivatives manufacturing site in Alexandria,
Egypt, where the company produces ethylene and other petroleum derivatives. The
plant will treat wastewater from the water resource recovery facility and
cooling-tower blowdown to get cooling-tower makeup water, boiler feed water,
and achieve ZLD. The technology provided is a microfiltration system, a
high-efficiency reverse-osmosis (HERO™) system, followed by fractional
electrodeionization (FEDI™) and a brine concentrator, and finally, a
crystallizer and sludge treatment system.
The project is expected
to be completed in 13 months.
Eden Park Illumination
(Champaign, Ill.) was awarded a $1 million grant from the U.S. Department of
Energy to commercialize microplasma ultraviolet (UV) lighting tiles for water
purification and sterilization. Eden Park will develop and demonstrate
large-scale microplasma/microcavity UV-flat lamps in the wavelength range of
UVB to UVC, having tile areas up to 0.9 m2 (1 ft2) for
water purification and disinfection.
The grant’s objective
will be to demonstrate large-scale products for thin microplasma UV-flat
lighting systems having a radiating area up to 0.9 m2 at a UV-conversion
efficiency greater than 20%. A scaled production methodology will be put in
place, and an optimized power delivery system will be designed and developed
according to the scale of each size class of microplasma lamps. Also, lamps
with other emitters (molecular gas emitters or UV-conversion phosphors) capable
of generating photons in various UV wavelength ranges between 172 and 310 nm
will be developed to provide a broad range of UV applications for water
Severn Trent Services
recently signed a contract with Tianjin Machinery and Electric Equipment Import
and Export Co. Ltd. (Tianjin, China), to provide its TETRA® Denite®
denitrification filter technology to the Tianjin Jinnan Wastewater Treatment
Plant Phase 1 project. The Phase 1 project has a daily capacity of 499,000 Mg
(550,000 ton), making it the largest DeniteDeepBed filter in China.
TETRA Denite is a fixed-film biological
denitrification process that also serves as a deep-bed filtration system capable
of removing total nitrogen and total suspended solids from wastewater in a
single step. The denitrification installation during Phase 1 will ensure that
the Tianjin Jinnan plant meets the Class 1A wastewater discharge requirements
for total nitrogen that were recently established due to the implementation of
water resource management regulations, which enforce high-quality standards on
wastewater treatment and discharge, as well as recycled water. The Severn Trent
Services design uses 30 filters, each measuring 28.45 m × 3.56 m, for a total
filter area of more than 3000 m2.
The Phase 1 project is
set to begin in October.
(Fort Washington, Pa.) recently signed a contract to
provide its turnkey chlorination system Capital Controls® technology
in the first construction phase of the Chengdu Seventh Tap Water Plant in
Chengdu, China. The system will be the largest chlorination system installation
in Chengdu, with a cost-effective, end-to-end system.