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Scientists Sniff Out Smart Solution to Sewer Smells
 Brisbane,
Australia -- A system that offers water utilities a cheaper
way to get rid of sewer odors and stop the corrosion that
can lead to sewers collapsing and causing sinkholes, is one
of the innovative business concepts in the running to win
$100,000 in The University of Queensland (UQ) Business
School 2011 Enterprise competition.
Brisbane-based Cloevis aims to
tackle the twin problems of smell and corroding concrete
sewer pipes with a patented mix of chemicals that kill the
bacteria that trigger the problems. These bacteria turn
dissolved sulphates in wastewater into hydrogen sulphide
(which gives off a foul, ‘rotten egg’ smell) and then into
corrosive sulphuric acid.
Most of the chemicals on the
market, used by water and municipal authorities around the
world, attempt to manage the hydrogen sulphide, not kill the
bacteria responsible for it.
Cloevis believes its patented
chemical mix, integrated with a dosing optimization software
tool, will cut water authorities’ operating costs by up to
50 per cent. Authorities currently spend between 50c and
$1.50 per resident each year just on chemicals to prevent
sewer corrosion and odors.
Academic Dean and Head of the UQ
Business School, Professor Iain Watson, said UQBS was proud
to support entrepreneurial ideas like Cloevis.
“Cloevis is tackling major
problems associated with sewers through an innovative
approach. Like the other finalists, the Cloevis developers
have the potential to make their mark commercially,’’
Professor Watson said.
The Cloevis technology has been
developed at UQ’s Advanced Water Management Centre (AWMC).
Its genesis was an $11 million research program into current
methods of controlling sulphide odors and corrosion, funded
by nine Australian water utilities, Water Quality Research
Australia, CH2M Hill and the Australian Research Council.
The technology’s
commercialization is now being led by UniQuest.
UniQuest Commercialization
Associate, Dr Tony Keating, said: “The researchers were
looking at all these existing ways and found that it’s ad
hoc as to which chemicals are used, and how much is used.
They found there is significant overdosing, as authorities
want to be on the safe side.
“The researchers thought, ‘well,
here’s a way of doing this better’. The Cloevis chemicals
break down the cell walls of the bacteria and kill them.
They are simple, inexpensive chemicals, in good supply, and
by killing the bugs, they stop the hydrogen sulphide from
forming and causing a problem.
“Their other advantage is that
you don’t need as much of them. Dosing with these new
chemicals would be every week or so, whereas current dosing
is done 24 hours a day, seven days a week. This means
substantial savings for authorities in their chemical
costs.”
Sewer corrosion is a major
headache for water authorities, with frequent reports of
sinkholes appearing after pipe leaks and collapses. In the
US, the cost of sewer corrosion (including chemical dosing
and infrastructure repair and replacement) is estimated to
be $US13.75 billion a year.
“When engineers designed sewer
systems, they thought they would last about 100 years,” Dr
Keating said. “But because of corrosion, they are finding
that some of the newer ones in the US are only lasting 10
years.’’
Cloevis’s chemical mix would be
integrated with SeweX, a software tool developed by AWMC
since 2003, which predicts sulphide formation and transfer
in the sewer network, allowing authorities to optimize their
chemical dosing regimens. The SeweX model has been used by
five Australian water utilities in corrosion and odor
management in their sewers, with the Gold Coast reporting it
had already generated savings of $1.3 million.
Following successful laboratory
trials and preliminary field trials of the Cloevis chemical
mix, discussions are now underway with Australian and
overseas water utilities to run commercial-scale field
trials.
The UQ Business School Enterprise
2011 finalists were chosen from a record number of entries
received for the competition, which is now in its 11th year.
The finalists will be interviewed
by an expert judging panel on September 16 and then have
their final chance to impress the judges at a “Pitch Day’’
in October. The winner will be announced at the pitch day,
which will be attended by venture capitalists and angel
investors. For more information, visit
http://www.business.uq.edu.au/enterprize/
Source:
http://www.uq.edu.au/
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RedZone Robotics Acquires
Cleanflow Systems
 Pittsburgh,
PA -- RedZone Robotics, Inc. has announced the acquisition
of Cleanflow Systems, a leading provider of wastewater
condition assessment technologies based in New Zealand.
RedZone is a leading designer and
manufacturer of robotic wastewater inspection technologies
and related analytic and decision-support tools, serving
municipalities, contractors, and engineering firms. Both
RedZone and Cleanflow have a demonstrated history of
developing innovative products that help their clients
precisely measure and understand the condition of their
underground sewer infrastructure, such as RedZone’s
autonomous Solo® inspection robot and Cleanflow’s
HDProfiler® inspection platform.
RedZone further provides
wastewater asset management software solutions that organize
critical data and help wastewater managers make smarter
fact-based decisions.
The combination of the two
companies is a marriage of complementary assessment and
analytics technologies that includes solutions for the full
range of wastewater infrastructure. This combined portfolio
of products and services provides information that helps
wastewater asset owners and their partners do a better job
of delivering services, spend limited funds more wisely and
ensure compliance with regulatory agencies.
Ultimately, management
representatives from both firms expect both new and existing
customers to benefit greatly.
“The combination of Cleanflow and
RedZone makes sense for the business and for our customers.
Together we can provide all of the tools required for our
customers to make sense of the world’s abundant wastewater
collection systems, which are all too frequently out of
sight and out of mind. The challenge here is to put the much
needed information in the hands of wastewater managers so
they can proactively manage their sewer infrastructure,”
said CEO Eric Close.
“The combined offering gives
collection system owners, as well as their engineering and
contractor partners all of the tools they need.”
Today’s wastewater manager has
been constrained by diminishing budgets and resources at a
time when consumer demand is high, infrastructure is
deteriorating, and regulatory pressures are mounting.
“Wastewater managers have an
enormous need for a breakthrough innovation that really
helps make the manager’s job significantly easier. Our
combined solutions are easy to use, provide the information
that is desperately needed, and will make a huge difference
to wastewater managers, the communities they serve, and to
the environment”, said Trevor Logan, Cleanflow CEO.
“Independently each company is
respected in the industry. Together we are a global leader
with the ability to serve clients of every size, and across
the globe, with the sewer assessment and analytics tools
they require.” The company also announced that Mr. Logan
will join the RedZone board.
Today the combined entity reaches
customers in 35 countries including some of the world’s
largest cities, engineering firms and contractors.
Source:
http://www.redzone.com/
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Landia Mixers "Tilt" Towards Success
 Whitchurch,
UK -- Whitchurch-based Landia have completed a major mixer
and pump installation for the first of two new 40m diameter,
6m deep tanks at Hedensted Central Waste Water Treatment
Plant in Denmark.
The installation includes four
Landia POPL-I mixers with special pitch-adjustable long
blades that create an optimum combination of effective
mixing and low energy consumption.
The new process tanks (7800m3
each) are replacing six existing units (1400m3 each) in a
€5.9M restructuring project designed to create much improved
wastewater treatment facilities in the Hedensted
Municipality near Vejle in Denmark.
Designed for optimum efficiency,
the long-bladed Landia mixers provide a significant benefit
over other models. This is because they have the flexibility
to tilt the blades to virtually any angle, as Hedensted
Spildevand’s Operations Manager Ulrik Folkmann explains:
“We will have to run the mixers
almost 24 hours per day, so it is vital that they don’t
burden us with high energy costs,” he said.
“There is a clear advantage in
the tilting design of the Landia equipment, which will give
us the best and most energy efficient mixing. Both tanks
will have seven pole-mounted Landia mixers, making it much,
much easier for inspection and servicing”.
In addition to the four
pitch-adjustable Landia POPL-I mixers, the Landia
installation also includes two AXP-I axial pumps per tank,
installed in the wall between two tanks being used to move
water from one tank to the other – plus one POP-I
submersible medium-speed mixer per tank.
Ulrik Folkmann added: “Landia not
only furnished us with an attractive purchase price, but
importantly, with a life cycle energy consumption budget and
excellent service deal for the next 15 years. This is a mark
of high quality, reliable equipment, and complete peace of
mind for us that we are working with a company that provides
proper back up if and when we need help”.
The first new tank at Hedensted
Central WWTP is actually comprised of three tanks inside
each other. Over 10,000 m3 of soil that was moved has been
built into the exterior walls as part of this first stage of
the project. Also in keeping with Hedensted WWTP’s strategic
environmental plan, heat used in the base plate process is
being used for the site’s administrative buildings to help
the company reduce its CO2 emissions.
Due for overall completion in
August 2012, when the second of the 40m diameter tanks will
also be built and operational, Hedensted Central WWTP will
have increased its current 25,000pe capacity to cope for
future needs of over 45,000pe. Together with two existing
plants in the nearby cities of Juelsminde and Toerring,
these three sites will cater for all wastewater treatment
needs in the area — offering superior and more energy
efficient processes than what was previously provided by six
separate smaller treatment plants.
Source:
http://www.landia.co.uk/
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Largest Design-Build-Operate
WTP in U.S. History
 Tampa,
FL -- A new 120 million-gallons-per-day (MGD) water
treatment plant, among the world's most sophisticated
water treatment facilities, is now providing Tampa Bay
Water customers with drinking water that exceeds federal
and state drinking water quality standards. Thanks to an
innovative approach taken by Tampa Bay Water, a public
regional wholesale water provider, the new plant –
designed, built and operated by Veolia Water North
America – is the largest design-build-operate (DBO)
drinking water project in U.S. history, representing a
potential model for other cities facing growing
populations, tight budgets and water resource
challenges.
"We're delighted that our
partnership completed the new Tampa Bay Water Regional
Surface Water Treatment Plant on time and under budget,"
said Jerry Seeber, general manager of Tampa Bay Water.
"This new facility is the backbone of our regional water
service to more than 2.4 million people. By every
measure, whether water quality, cost or service, this
project is a success."
The cost savings from the
project's first phase was substantial – $80 million on
what was originally projected to be a $200 million
budget by Tampa Bay Water's advisors. The speed of the
project delivery by Veolia Water North America and its
partners was escalated due to the unified approach
offered by the DBO model. Guarantees for water quality,
water quantity, project timelines, and operations and
facility maintenance were established that are otherwise
not available without private-sector involvement. Tampa
Bay Water also reduced its own administrative and
consulting costs through a single procurement.
"By developing a Master Water
Plan and using an alternative delivery approach, Tampa
Bay Water has done what so many communities should be
doing and yet have only begun to study, to provide a
cost-effective, dependable and sustainable approach to
water resources and water service for citizens and
businesses," said Laurent Auguste, president and CEO of
Veolia Water Americas.
The project also offers
extensive environmental benefits. The region was
previously dependent on groundwater supplies, which,
when coupled with a rapidly growing population, was not
sustainable and resulted in damage to natural
ecosystems.
Because of the substantial
variability in quality of the region's source water,
Tampa Bay Water specifically selected Veolia Water
Solutions & Technologies' patented ACTIFLO®
clarification process, which is proven to treat water
with high variability. The technology's added benefit
was a much smaller construction footprint. As a result,
a hydrobiological monitoring program, which measures
hydrological and biological conditions in area rivers
and the local canal, has shown use of these source
waters is sustainable.
"Well-managed communities
continue to attract new people and economic investment,
but they also seek to maintain a good quality of life,"
said Auguste. "This creates additional pressure on water
resources. This pressure represents an exceptional
challenge for many cities, and will continue to be a
challenge for years to come. Solving these water
resource issues requires smart, creative models and
creative approaches."
The Tampa Bay Water Regional
Surface Water Treatment Plant blends source water from
the Alafia River, the Tampa Bypass Canal, the
Hillsborough River and the C.W. Bill Young Regional
Reservoir, delivering raw water through a 72-inch
diameter pipeline to the treatment plant process
equipment. Treatment elements utilize a multi-barrier
process including ballasted flocculation (Actiflo®),
ozonation, filtration through granular activated carbon
gravity filters, disinfection, chemical dosing and
solids processing. Adjacent to the regional water
treatment plant are finished-water storage tanks and a
pump station that supplies water to the Tampa Bay Water
member governments' distribution systems.
Source:
http://www.veoliawaterna.com/
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Center : Featured Videos
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People post their requests
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Mr. Duarte needs help with
MBBR:
I am looking at project
parameters of the MBBR reactor and I have a doubt about the
Filling Ratio. I saw many sites that define it as the ratio
between the volume of biomedia used and the volume of the
tank.
The question is about the
volume of the tank. Is it the TOTAL volume (cross sectional
area * height), the tank work capacity or the operational
volume?
The results I get using this
three values are quite different. I read that the usual
values for filling ratio are between 30-70%.
Thanks for the help
Gustavo Duarte
Petrobras
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and Wastewater Plant Directory - Featured Plant
 Lions
Gate Wastewater Treatment Plant
Burnaby, British Columbia
The Lions Gate
Wastewater Treatment Plant (WWTP) provides primary
treatment to wastewater from approximately 160,000
residents of the District of West Vancouver, the
City of North Vancouver, and the District of North
Vancouver. The Lions Gate plant's treatment capacity
is seven times as great as when it opened in 1961.... (Click
here to read more...)
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| About Us :
Water and Wastewater Newsletter
© 1999-2011 Water and Wastewater.com
Home page: http://www.waterandwastewater.com
Joseph Taylor, Editor
Water and Wastewater Newsletter
3948 South Third Street, No. 121
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Email: jtaylor@waterandwastewater.com
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::
Scientists Sniff Out Smart
Solution
to Sewer Smells
::
RedZone Robotics Acquires
Cleanflow Systems
::
Landia Mixers "Tilt" Towards
Success
::
Largest Design-Build-Operate
WTP in U.S. History
:: The News Center : More headlines
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Is sewer line corrosion a
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Read on!
With over 13,000+ subscribers,
our goal is to provide information
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Thanks,
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jtaylor@waterandwastewater.com
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Water & Wastewater – Liquid Tank Selection
In liquid
storage containment, quality and value drives today’s
tank selection process. With advances in fabrication
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UK Company Provides WWTP Upgrade in Bolivia
In late 2009, Gurney
Environmental Ltd. completed the installation of an
internationally tendered, World Bank funded project
to address wastewater processing issues in the city
of Santa Cruz de la Sierra, Bolivia. The 1.8 million
population cityʼs infrastructure is under stress due
to significant population growth. The wastewater
treatment plant (WWTP) had been in an overloaded
condition resulting in low rates of processing,
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