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Wastewater/Fuel Oil emulsion reduces Pollution
 Taiwan
-- A dream technology, aiming to save energy and reduce
criteria pollutants and polycyclic aromatic hydrocarbons
(PAH) in flue gas pollutant emissions by using wastewater
emulsified fuel oil (WWOEF), has been proved on industrial
boiler at National Cheng Kung University (NCKU).
This technology is undergone
patenting process, and a listed company in Taiwan is
negotiating technology transfer with NCKU. It is estimated
that in half a year this green energy technique can be
applied in mass production.
This technology, developed by a
green energy R & D team led by Prof. Wen-Jhy Lee, Department
of Environmental Engineering at NCKU, is sponsored by
National Science Council in Taiwan. After seven years of
brewing and experimenting with this innovative idea, the
result is published in the January 1st, 2008 issue of
Environmental Science and Technology, a bimonthly academic
journal published by the American Chemical Society.
The researchers used wastewater
to make an emulsified oil (wastewater content 20% with 0.1%
surfactant) to evaluate the extent of reductions in both
criteria pollutants and polycyclic aromatic hydrocarbons
compared with heavy oil fuel and water emulsified oil. The
result showed that the wastewater emulsified fuel oil could
significantly reduce particulate matter (PM), NOx, SO2, and
CO as compared to heavy fuel oil and similar to those from
water/oil emulsified fuel.
The reductions of total PAH flue
gas emissions are 38 and 30% for wastewater and
water-emulsified fuel, respectively, and 63 and 44% for
total toxic equivalence (BaPeq), respectively.
In addition to reducing flue gas
pollutant emissions, this technique also makes safe disposal
of industrial wastewater and saves about 13% of energy in
boiler operation, making WWOEF highly suitable for use in
boilers. In monetary terms, if this technique can by applied
worldwide, huge energy and wealth can be saved, which is
indeed a rescue in time for the current state of this planet
Source:
http://www.ncku.edu.tw/
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Rexnord acquires Sluice Gate
Manufacture
 MILWAUKEE,
WI -- Rexnord LLC announced today that Zurn Industries, LLC,
its wholly owned water management subsidiary, (“Zurn”),
entered into a definitive agreement to acquire the stock of
Fontaine-Alliance Inc. and affiliates (Fontaine) for a cash
purchase price of $30 million Canadian dollars (CAD)
(including the assumption of debt).
The acquisition is expected to
close in the first calendar quarter of 2009. Fontaine
manufactures sluice gates and other engineered flow control
products for the municipal water and wastewater markets.
Fontaine is based in Magog, Quebec, Canada. Fontaine employs
approximately 185 employees with annual sales of
approximately $40 million CAD. Rexnord anticipates funding
the acquisition from existing cash balances and/or its
existing credit facilities.
Fontaine will expand Rexnord’s
strategic water management platform, which was created with
the company’s acquisition of Zurn in February, 2007. The
acquisition further expands Zurn’s presence in the municipal
water and wastewater markets, both domestically and
internationally, along with providing a product offering
that is complementary with Zurn’s recent acquisition of GA
Industries, Inc, which closed in January, 2008. Additional
information about Fontaine is available at
www.hfontaine.com.
Alex P. Marini, President and CEO
of Rexnord’s Water Management Group, said, “We are extremely
pleased with the acquisition of Fontaine. Fontaine is a
well-managed company with a strong brand name."
Andre Fontaine, CEO of
Fontaine-Alliance Inc. stated, “The merger provides Fontaine
the opportunity to grow in our markets even further by
leveraging the size and performance of Rexnord and Zurn. We
are excited to be part of Rexnord’s Water Management
business, which will greatly enhance the scope of products
available to our customers.”
Bob Hitt, President and Chief
Executive Officer of Rexnord LLC, said, “The addition of
Fontaine serves as a complement to our existing water
management business, and also strengthens our dedication to
expanding valuable components of our water management
platform.”
Source:
http://www.rexnord.com/
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New, Energy-Efficient Water
Desalination
 SANTA
ANA, CA -- QuantumSphere, Inc., a leading developer of
advanced catalyst materials, high-performance electrode
systems, and related process chemistries for portable power
and clean-tech applications, filed for a U.S. patent on a
water purification process that serves as a more
energy-efficient alternative to desalination methods now
commonly used to help meet growing water needs around the
world.
QuantumSphere intends to commercialize the forward osmosis
technology to address the challenge of growing demand for
potable water. According to Lux Research, the world’s water
needs are expected to grow 40 percent by 2030, and today’s
stressed water resources and systems are unsustainable.
Water cultivation systems are expected to see market growth
from $522 billion in 2007 to nearly $1 trillion in 2020.
The
forward osmosis process developed by QuantumSphere uses
certain organic solutions to separate water from salt water
or polluted water in an osmotic purification process. The
company has constructed a prototype system that can purify
several gallons of water a day for demonstration purposes
and intends to scale the process with large development
partners to serve large-scale municipal drinking supplies.
The
QuantumSphere process will provide an alternative to thermal
desalination and reverse osmosis desalination processes that
require more energy than the forward osmosis process it has
developed.
“Today, most high-volume thermal desalination is conducted
at complex plants in the Middle East, where an inexpensive
oil supply makes it more practical than most other parts of
the world,” said Subra Iyer, principal technologist for
QuantumSphere. “The reverse osmosis process also requires
tremendous amounts of energy for desalination. The forward
osmosis process we’ve developed can purify water at less
than 3,000 kWh per acre foot, which is approximately 70%
cheaper than the energy cost of traditional reverse osmosis
processes.”
Forward osmosis using QuantumSphere’s proprietary process
can also purify brackish and polluted water. The process
uses a semi-permeable membrane to separate water from salt
water into a special organic solution across the membrane.
The diluted organic solution is then warmed to cause the
specially formulated organic solute to drop out, leaving
only fresh drinking water after a final purification step
through activated charcoal.
QuantumSphere will successively build larger prototypes to
accelerate the water purification rate of forward osmosis to
1,000 gallons a day and then 10,000 gallons a day, the
latter being sufficient to supply a hotel or a seaside
resort. Within three years, the company will address larger
engineering challenges to bring the rate up to a million
gallons a day, or enough to supply a small municipality.
Source:
http://www.qsinano.com/
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CH2M Hill installs SWRO plants
in the UAE
 DENVER,
CO -- CH2M Hill, a global full-service engineering,
procurement, construction, and operations firm has delivered
design, construction, and commissioning services to the
Sharjah Electricity and Water Authority for two seawater
reverse osmosis (SWRO) desalination plants in the United
Arab Emirates. A third desalination plant for the Authority
is currently under construction by CH2M Hill, and is
expected to be online by mid-2009.
Located in the rapidly developing United Arab Emirates, the
Sharjah Electricity and Water Authority is responsible for
providing reliable and affordable electricity and water to
the Emirate of Sharjah. As water demands increase, the
authority is turning to SWRO membrane desalination to
diversify and augment the region's potable water supplies.
"The
Emirate of Sharjah needs additional water supplies," says
CH2M Hill's Felix Wang who served as commissioning manager
and process engineer. "Salty water comes from the taps in
some areas, such as Khor Fakkan. The new desalination plants
will serve a critical need in the existing distribution
network. It feels great to know that we are doing good work
for the people of Sharjah."
CH2M
Hill has served as the single-source of responsibility for
engineer-procure-construct services for the three new
desalination plants, which will provide more than 60,000
cubic meters (16 million gallons) per day of high-quality
desalinated water to the people of Sharjah. The Layyah and
Khor Fakkan SWRO desalination plants began exporting
desalinated water in October 2008.
The
environments and source waters of the three plant sites
differ dramatically, each presenting unique design and
engineering challenges. The Layyah SWRO desalination plant
lies on the Arabian Gulf, about 15 kilometers (10 miles)
northeast of Dubai. The Khor Fakkan and Kalba SWRO
desalination plants are located on the opposite side of the
Oman Peninsula on the east coast of the UAE, facing the
Arabian Sea.
The
engineering challenges have been addressed with an array of
advanced desalination technologies. The Layyah and Khor
Fakkan sites use dual-stage media filters for treatment of
the raw seawater prior to reaching the high-pressure SWRO
system. The Layyah site incorporates a dissolved air
floatation system before the media filters for enhanced
removal of particulates, and better protection against
accidental oil spills and seasonal algae blooms.
Instead of conventional media filters, the Kalba
desalination plant will use high-performance ultrafiltration
membranes that are specifically designed for SWRO
pretreatment applications. All three plants incorporate the
highest efficiency energy-recovery devices available on the
market. These innovative technologies result in the
production of desalinated seawater at lower capital and
operating costs than conventional systems.
CH2M
Hill's Keith Scott, program manager and a seasoned veteran
of design-build desalination projects, is responsible for
the concurrent delivery of the three desalination plants.
Scott said, "At the conclusion of these projects the team
can look to each other and be extremely proud of what we
have accomplished together: single-source EPC delivery of
three desalination plants to the water-starved Emirate of
Sharjah that will serve as showcase facilities for the
Authority and CH2M Hill."
Web
site:
http://www.ch2mHill.com/
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Featured Videos
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your videos with everyone - promote your plant, your
product and your company, free.
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| Help Forum :
Hot Messages from the Help Forum
People post their requests
for help and offer their suggestions to others in our open
forum.
Mr. Knight is having problems
with ammonia:
My BNR facility is having a
lot of ammonia overload due to the sludge pond that is used
for wasting. I understand the methnaogenesis stage does
produce ammonia-nitrogen and alkalinity as a by product of
bacterial degradation and my ORP is around -300 mV. The pond
has no mixing and there is no other way to waste elsewhere.
I have no dewatering other
than running the supernatant back to the BNR splitter box.
We all know what happens with organic overload.
My question is, if I mix the
contents will this help reduce the ammonia and nitrogen? I
can't divert the supernatant elsewhere.
Any suggestions?
(Click
here to post a reply)
Thanks,
Dale Knight
City of Eloy, AZ
dknight@ci.eloy.az.us
Help Forum:
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Fair: We have a number of job openings on the Job
Fair, here are just a few of them we would like to share
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| About Us :
Water and Wastewater Newsletter
© 1999-2009 Water and Wastewater.com
Home page: http://www.waterandwastewater.com
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Water and Wastewater Newsletter
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::
Wastewater/Fuel Oil emulsion
reduces Pollution
::
Rexnord acquires Sluice Gate
Manufacture
::
New, Energy-Efficient Water
Desalination
::
CH2M Hill installs SWRO plants
in
the UAE
:: The News Center : More headlines
:: The Water and Wastewater Blog
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| Hi Everyone,
Making less pollution with
wastewater, that's a novel idea and for some reason, I like
sluice gates, find out more in this week's issue, read on!
With over 10,000+ subscribers,
our goal is to provide information
to improve your business by using the resources available on the
Internet.
Thanks,
Joe Taylor, Editor
jtaylor@waterandwastewater.com
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"...a hands-on guide to
understanding the biology and biological conditions that
occur at each treatment unit." |
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Wastewater Bacteria
(Microbiology)
by Michael H. Gerardi
Paperback, 272 pages, 2006
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| This
months Ask Tom! article |
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Using Zeta Potential to Optimize Water Treatment
Guest article by Ana
Morfesis & Ulf Nobbmann, Malvern Instruments
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Case History |
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Tillman Water Reclamation and Water Garden
The City of Los Angeles Donald C. Tillman Water
Reclamation Plant (DCT) combines technology with
tranquility. The DCT is home to both a wastewater
treatment facility and a Japanese garden open to the
public all year long. Water is a central element to
any Japanese garden and the fact that the water used
in the Tillman Japanese garden is reclaimed adds to
the overall sense of harmony.....(more) |
More case histories...
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