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QUT :
Is
iron the culprit in algae blooms?
 Brisbane,
Australia -- Australia's distinctive red soils could play a
part in the formation of the stinking swathes of blue-green
algae often shoveled off its east coast beaches in summer.
A Queensland University of
Technology (QUT) team of scientists is taking an in-depth
look at how iron, which gives the iron-rich soil its red
color, reaches water to potentially contribute to the algal
blooms, which not only have a foul smell, but also make our
eyes sting, cause fish kills and smother seagrass.
Their research is centered on the
catchment of Poona Creek on the Fraser Coast which drains
into Great Sandy Strait - a dugong sanctuary and an
internationally recognized wetlands for migratory birds.
Iron is known to be a component
causative factor for algal blooms but the mechanism by which
solid iron in soils becomes soluble and contributes to
coastal algae blooms is largely unknown.
That is why the team from QUT's
Institute for Sustainable Resources is taking the
three-pronged approach of microbiology (biogeochemistry),
geochemistry and hydrology studies to put together enough
pieces of the iron jigsaw to form the basis for future
research into mitigating its contribution to dangerous algal
blooms.
PhD student Lin Chaofeng is
studying two types of bacteria in water that "feed on" iron.
"One type of bacteria in our
waterways changes iron into a dissolved state and another
type of bacteria oxidizes the iron and turns it back into a
insoluble form which can settle on the bottom of a creek ,"
Ms Lin said.
"The oxidizing type of bacteria
possibly makes the iron less available as a contributing
factor in algal blooms. It seems that these two bacteria
usually balance each other out, but sometimes the balance is
upset and so I am investigating how this happens."
QUT geology student Stefan Loehr
is studying soil and sediment samples from the catchment to
analyze their iron content and search for possible
contributory mechanisms for iron dissolving in water.
He has studied the concentration
of iron in soil in native vegetation and in pine plantations
and found no significant difference in iron concentrations.
"It could be that different types
of plants lead iron to be more easily soluble and so I am
also investigating whether there are any differences between
natural vegetation and plantation areas," Mr Loehr said.
Hydrology student Genevieve
Larsen's study of subsurface and surface water and flow
processes is aimed at finding out how the iron gets from the
ground into the water, and the chemical reactions that may
take place when groundwater interacts in the estuary with
the marine environment.
"I'm looking for possible links
between subsurface water and natural waterways such as
streams, creeks and the sea," Ms Larsen said.
The study is funded jointly by
the Queensland Department of Primary Industries-Forestry,
Forestry Plantations QLD and the Australian Research
Council.
http://www.qut.edu.au/ |
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This
newsletter is sponsored by:
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Calgon Carbon acquires Hyde
Marine
 Pittsburgh,
PA -- Calgon Carbon Corporation announces that it has
acquired the outstanding stock of Hyde Marine, Inc., a
manufacturer of systems that utilize ultraviolet light
technology to treat marine ballast water. Terms of the
transaction were not disclosed.
In 2004 the International
Maritime Organization (IMO) adopted the International
Convention for the Control and Management of Ships' Ballast
Water and Sediments (BWMC) which addresses the
transportation of potentially harmful organisms through
ballast water. The regulation is scheduled to be phased in
globally over a ten-year period beginning in 2010, and
industry sources estimate that it will require treatment of
ballast water from more than 40,000 vessels by 2020.
Hyde Marine's Hyde Guardian™
system (Guardian), which employs stacked disk and
ultraviolet light technology to filter and disinfect ballast
water, offers cost, safety, and technological advantages.
Guardian has received Type Approval from Lloyd's Register on
behalf of the U.K. Maritime and Coast Guard Agency. Type
Approval confirms compliance with the BWMC.
Commenting on the announcement,
John Stanik, Calgon Carbon's president and CEO, said, "We
are very pleased that Hyde Marine will become part of our UV
business. Although small, this strategic acquisition will
broaden our knowledge base and experience in using
ultraviolet light technology to treat water. It also
provides Calgon Carbon immediate entry into a global,
legislative-driven market with major long-term growth
potential."
Source:
http://www.calgoncarbon.com/ |
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Dosing
system keeps water "sweet" in UK
 Charlotte,
NC -- United Utilities is the largest listed water company
in the United Kingdom. The company owns, operates and
maintains numerous utility assets, including water,
wastewater, electricity and gas. A Financial Times Stock
Exchange (FTSE) top 100 company with an annual turnover of
$3.3 billion US Dollars, United Utilities sees themselves as
stewards of natural resources in Northwest England, in the
United Kingdom and worldwide.
At the new United Utilities Cowm
water treatment facility located within the Watergrove Water
Treatment Plant at Wardle near Rochdale 10 miles northeast
of Manchester, United Utilities needed to add Powdered
Activated Carbon (PAC) to the water it draws from the Cowm
Reservoir.
Adding PAC neutralizes a
naturally occurring material known as Geosmin that literally
translates as 'earth smell'. Geosmin is an organic compound
produced by microbes and algae that give the untreated water
a harmless but undesirable earthy taste and aroma.
A sister company to Spiroflow
Systems, Inc. located in Monroe, North Carolina, Spiroflow
Ltd is an approved supplier to United Utilities. As such,
Spiroflow was well positioned to bid on the PAC dosing
system required by the new Cowm water treatment facility.
"The equipment is very good,"
Glover said. "We had an initial teething problem caused by
unexpected clumps of PAC that Spiroflow quickly remedied by
fitting a vibrator to the collection hopper. The system has
worked well ever since."
The 'Spiroflow' Type 6 Bulk Bag
Discharger comes complete with its own bag hoisting system.
This eliminates the need for a lift truck and only requires
the use of a hand operated pallet truck to move the bags
from the storage area to the discharger. Once the loops of
the bag are attached to a lifting frame, the bag can be
hoisted up, traversed across and then lowered into position
on the discharger.
The 'Discharger at Cowm is fitted
with an optional bag outlet clamping system that lets the
operator safely untie the bag's neck seal within the dust
cabinet located below the bag. The operator then closes the
door and opens the clamp remotely, allowing the PAC material
to discharge in a totally contained manner to protect both
the operator and the working environment. This is
particularly important when handling light, fluffy powders
such as PAC that readily become airborne.
Bag massagers are also fitted to
the bag support dish. In the event a well-compacted bag's
contents are reluctant to flow, the bag massagers
automatically break up any bridges and ensure a continuous
flow of PAC.
From the Discharger, the PAC
material is transferred to the Flexible Screw Conveyor. The
conveyor's only moving part is a motor driven spiral that
rotates within a sealed tube to gently move material without
degradation. This results in a system that is high in
efficiency and performance. The conveying system is
totally sealed and does not use air as the conveying medium,
eliminating any risk of dust contamination.
Throughputs of up to 10,000 cubic
feet per hour can be accommodated.
For more information contact:
Spiroflow Systems, Inc.
Telephone: 704-291-9595
Fax: 704-291-9594
Email:
info@spiroflowsystems.com
Web site:
http://www.spiroflowsystems.com/
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AWWA announces publication
for WW Utilities
 Denver,
CO -- The American Water Works Association (AWWA)
announced today the publication of "Security
and Emergency Planning for Water and Wastewater
Utilities". In the years following the September 11
terrorist attack, water and wastewater utilities have
undergone many changes concerning security and emergency
preparedness. All of these changes have been compiled,
analyzed, simplified, and organized in this
comprehensive new book.
Since 2001, government at all
levels passed new laws and regulations to help protect
water infrastructure against intentional damage and
prevent the deliberate contamination of water supplies.
Utilities everywhere assessed vulnerabilities, revised
procedures to improve response to emergencies, and
tightened premises security.
Tens of thousands of pages
documenting these new laws, regulations, policies,
procedures, and requirements have been published. To
help utilities adapt to the new security reality,
thousands of new guidance documents, books, Web sites,
and reports have been produced. Unfortunately, there was
simply too much new information scattered across too
many information sources. "Security and Emergency
Planning for Water and Wastewater Utilities" remedies
that problem.
Topics covered include:
• Natural, accidental, and intentional threats to water
and wastewater systems
• US federal legislation, regulation, and Homeland
Security Presidential Directives regarding utility
security and emergency preparedness
• The Water Sector Specific Plan
• Vulnerability assessments, tools, and resources
• Effective utility-security programs, tools, and
resources
• Emergency management systems
• Water contamination early-warning systems
• Incident or threat response Emergency response
training
• Remediation and recovery
Years in the making, this
book is one of the most thoroughly researched books ever
published on water utility security and general
emergency preparedness. "Security
and Emergency Planning for Water and Wastewater
Utilities" is available on Amazon.com with free
shipping.
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Featured Videos
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your videos with everyone - promote your plant, your
product and your company. Get you video
featured in our newsletter, 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. Heng needs help with
cyanide content:
I'm having a high content of
cyanide in my treatment plant, below are the values;
1. Trickling filter =
0.03mg/l
2. Final discharge 1 = 0.17mg/l
3. Final discharge 2 = 1.1mg/l
My effluent plant consist of
2 final discharges due to separation of the load to two
different aeration tank from the same trickling filter.
Where does the cyanide might
come due to low content of cyanide were detected in the
trickling filter but it increase at the downstream process?
Thanks,
S. M. Heng
GS Paper & Packaging
(Click
here to post a reply)
Help Forum:
Share your
expertise with others in our
Help
Forum. |
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| From the Job
Fair: We have a number of job openings on the Job
Fair, here are just a few of them we would like to share
with you. If you know someone in need, please forward
our newsletter to them, so they can check on a job that
might suit them.
Help
Someone to Find a Job - Today!
New Openings this week:
Maintenance Manager - Overseas
Intermediate/Senior Environmental Engineer -
Dunedin, NZ
Chemist, Water Treatment Project - Williamsport, PA
Wastewater Chemists needed ASAP - NY, PA and WV
Director of Water Operations - Irvine, CA
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For job more listings, and we
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Do you have a position
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| About Us :
Water and Wastewater Newsletter
© 1999-2010 Water and Wastewater.com
Home page: http://www.waterandwastewater.com
Joseph Taylor, Editor
Water and Wastewater Newsletter
3948 South Third Street, No. 121
Jacksonville Beach, FL 32250
Phone: 904-280-4656
Fax: 904-273-1399
Email: jtaylor@waterandwastewater.com
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Newsletter is a 100% opt-in e-mail list of information for
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Please submit articles via e-mail, only to: news@waterandwastewater.com |
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::
QUT :
Is
iron the culprit in
algae blooms?
::
Calgon Carbon acquires
Hyde Marine
::
Dosing
system keeps water "sweet"
in UK
::
AWWA announces publication
for WW Utilities
:: The News Center : More headlines
:: The Water and Wastewater Blog
:: Video Center
:: Help Forum
::
Water and Wastewater Plant
Directory : Featured Plant
:: The Job Fair
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:: Ask Tom! Column!
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:: Archive Information
:: About Us
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| Hi Everyone,
Does iron really play a role in
algae blooms? Read on!
With over 12,000+ 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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Using Zeta Potential to Optimize Water Treatment
Guest article by Ana
Morfesis & Ulf Nobbmann, Malvern Instruments
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Featured
Case History |
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Purafil ESD Retrofits Emergency Scrubber
As a part of its
continued quality efforts, New Jersey American Water
sought to replace its nearly 10-year-old wet,
caustic scrubber with a dry scrubber located within
its Jumping Brook Water Treatment Plant (WTP). At
its maximum capacity, the plant uses chlorine to
treat 30 mgd of water. Wet scrubber systems use a
liquid caustic solution to remove chlorine gas (Cl2)
in the event of an accidental release. ...(more) |
More case histories...
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Photographs
This week's
photo is of a VPC Fiberglass H Flume measuring water flow in
Manitoba creek. VPC also manufactures Parshall Flumes,
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channels in industrial and municipal sewers and sewage
treatment plants. VPC is your choice in quality fiberglass
products.
Photo courtesy
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VPC,
LCC
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