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Professor’s Research Leads to
Advanced Water Filters
 AUBURN,
AL -- An Auburn University chemistry professor’s research is
leading to safer drinking water in India through advanced,
longer-lasting water filters.
Professor Dave Worley’s N-halamine technology is the basis
for the in-home filters that HaloSource Inc. introduced
March 1 in Bombay, India. The company, established in 1998
on the potential of Worley’s discoveries, pays royalties to
the university through a technology transfer agreement.
“Many millions of people in India do not have sanitized
drinking water, so there is a great need for this filter,”
said Jeff Williams, senior vice president and cofounder of
Seattle-based HaloSource, which is partnering with India’s
Eureka Forbes company. “We test-marketed filters in hundreds
of homes in India last year and are excited about the
positive response.”
The filters contain polystyrene beads that hold oxidative
chlorine or bromine atoms for long periods of time and that
can be easily refurbished - the results of Worley’s
N-halamine chemistry. He has received 30 patents in the
course of discovering this process that binds the atoms to
the surface of various materials.
Worley, an Auburn faculty member for 33 years, won the
university’s Creative Research and Scholarship Award last
fall for his development of the technology.
“It has many potential applications that could improve
health around the world, especially in less-developed
areas,” Worley said.
To activate the filters,
chlorinated or brominated water is passed through them to
anchor the chlorine or bromine atoms to the beads. When
untreated water with bacteria, mold or virus cells pass
through the filter, the cells pick up the atoms which sink
into the cell walls and kill them. The filters can be
refurbished periodically just by running chlorinated or
brominated water through them again.
“The use of chlorine in city
treatment plants will kill bacteria only for a short time
period,” he said. “This may be several hours inside dark
pipes, from the water treatment plant to the faucet.
Sunlight reduces effectiveness even more, which is why
chlorine tablets must be continuously added to your swimming
pools.”
India’s water supply gets
contaminated during the monsoon season, and it has high
levels of calcium and magnesium, causing water hardness
about six times greater than in the United States.
Current attempts to disinfect
water include putting tablets in a pail of water and
stirring and drinking, which does not provide enough water
volume and it leaves the water with a bad taste. “Some
filters just remove dirt and make the water look clean, but
it still contains harmful bacteria,” said Worley.
India’s cities quickly
outgrow the capacity of municipal water systems, so water is
primarily provided by street vendors, who pull 1,000-gallon
tanks behind tractors and then pump water to roof-top tanks.
“In Bombay alone, several
million people buy their water off the street. None of it is
sanitized,” said Williams, who adds that HaloSource plans
future introductions of its filters in more countries.
More information about
HaloSource is available at its Web site,
http://halosource.com/prodhalopure.asp
Source:
http://www.auburn.edu/
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This
newsletter is sponsored by:
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ATM to Design RO Plant for
LaBelle, FL
 Jacksonville,
FL – Applied Technology & Management, Inc. (ATM) was
selected by the City of LaBelle, Florida, for the planning,
design, permitting, and construction management of their new
4.0 million gallon per day (mgd), expandable to 10 mgd,
reverse osmosis water treatment plant (WTP). This regionally
significant project—the City’s largest capital project to
date—ensures sufficient high quality drinking water in this
fast-growing area of Florida.
The project team will design a
new source water well field, treatment facility, water
storage facilities, distribution system improvements, and a
deep well injection system (for disposal of concentrate from
the treatment process). The facility is expected to be
online in early 2010 and will replace their existing
lime-softening water treatment plant, which was built in the
early 1970s.
ATM has worked with the City of
LaBelle for the past 12 years providing planning,
permitting, design, and construction services for the City’s
utility system.
“Having worked with LaBelle for
over a decade, we recognize the significance and importance
of this project to the City and its future,” says ATM
Project Manager Grant Misterly, P.E. “With the ATM Project
Team’s expertise and familiarity with the City’s needs and
goals, we will not only deliver a high quality and
successful project, but will also help guide the City
through this large capital undertaking.”
About ATM
Applied Technology & Management,
Inc. is a coastal, environmental, marine, and water
resources engineering firm specializing in water resource
analysis, infrastructure engineering, and planning for
sustainable development for both municipal and private
clients around the world.
Web site:
http://www.appliedtm.com/ |
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New Hach G1100 Trace Oxygen
Sensor
 Loveland,
CO -- Hach Company announces the availability of the G1100
Trace Oxygen Sensor, the first sensor for ppb level oxygen
monitoring using proven Luminescent Dissolved Oxygen (LDO)
technology.
Designed to meet maximum reliability and minimum maintenance
requirements, the G1100 offers distinct advantages over DO
sensors with traditional chemical cells including:
• Dry
sensor with no membrane
No electrolyte, chemicals, or complex service procedures
required.
• Automatic on-line calibration
High accuracy with minimal operator time needed.
• Real time diagnostics
Notification of due service, need for calibration sample
replacement, calibration failure, sensor or system failure
provided.
• Minimal service
Service requirements limited to just 5 minutes every 18
months. Oxygen levels do not affect service intervals.
The
G1100 provides a detection limit of 0.01 ppb and measures DO
in the range of 0-20,000 ppb. Applications in the power
plant water and steam cycles include monitoring the stator
coolant, condensate, deaerator, and feedwater for corrosion
control.
The
Hach Company is located in Loveland, Colorado, and is a
subsidiary of Danaher Corporation. The company is a global
leader in the development, manufacture, marketing and
support of laboratory, on-line, and on-site water quality
analysis solutions.
For
more information contact:
Hach Company
P.O, Box 389
Loveland, Colorado, 80539
Telephone: 800.227.4224
Fax: 970.669.2932
Email: orders@hach.com
Web site:
http://www.hach.com/
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Your Audience
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Water
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Watch, upload and share industry
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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. Slater needs help with nitrification & ammonia issues:
Industrial pre-treatment
activated sludge plant treats ~ 100,000 gals/day. We have
very low ammonia NH3-N coming into aeration basin from EQ -
but very high total nitrogen coming in 1700mg/L. We also
have high ammonia NH3-N in aeration basin (400mg/L) even
though its almost zero ammonia NH3-N coming in..
D.O. is good 3.00+ temp is
good 20-30c pH is good 7.5-8.0 and alkalinity is
questionable--- I'll explain.
If influent Ammonia in almost
zero, (yet in aeration basin is 400mf/L) how do I determine
if I have enough alkalinity? Do I use total nitrogen coming
in and multiply that by 7.1?
Alkalinity coming in is only
300 - alkalinity in aeration basin is 1500. MLSS are
where they should be ok ( for my plant) 9000mg/L
I'm pretty certain I have a
type of amine coming in hurting my system. also phenol
levels are slightly higher than normal.
How do I determine proper
amount of alkalinity to have in aeration basin? Aeration
basin is 500,000 gallons - I have a second basin I use for
denitrification, same size, EQ > aeration basin #1 high D.O.
> basin #2 - mixing -low D.O. > clarifier > back to Aeration
basin #1
(Click
here to post a reply)
Thanks,
Gary Slater
Hexion Specialty Chemicals
gary.slater@hexion.com
Ms. Christoforidou needs help with pickle wastewater:
Wastewater treatment from
pickles industry, IE brine removed, BOD & COD estimate?
(Click
here to post a reply)
Kind regards,
Popi Christoforidou
D.Gatsos
popi_chris@hotmail.com
Help Forum:
Share your
expertise with others in our
Help
Forum. |
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| Water
and Wastewater Plant Directory - Featured Plant
 Palmdale
Water Reclamation Plant
Palmdale, California
The Palmdale WRP
provides primary and secondary treatment (aerated
oxidation ponds) for 15 million gallons of
wastewater per day. The plant serves a population of
approximately 150,000 people. Effluent is reused for
irrigation of trees and feed crops on City of Los
Angeles Department of Airports' property...
(click
here to read more)
Click here to visit
the
Water and Wastewater Plants Directory
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| From the Job
Fair: Waste Water
Treatment Plant Operator - Corbin, KY
Shaw Environmental and
Infrastructure, Inc., a subsidiary of The Shaw Group, Inc.,
is a leading, full-service, environmental and facilities
management firm that recognizes that it takes a group of
highly talented and motivated individuals working together
to achieve the kind of outstanding results we continue to
accomplish through technical quality.
Join us at our Corbin, KY
office as the Wastewater Treatment Plant Operator. You'll
operate and direct the plant as you perform other
environmental management services.
Our ideal candidate will have
excellent communication and basic computer skills. You must
be able to work independently. Proven environmental
management and waste water treatment experience required.
Shaw Environmental &
Infrastructure, Inc. offers competitive starting salaries
and an attractive benefits package.
Please forward your resume
via our website at
www.shawgrp.com/Careers ,
search on Ref. No. 522762.
EEO M/F/D/V
The Job Fair:
A free
service of Water and Wastewater.com. You can post job
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for companies who are looking to add talented people to
their staff.
Do you have a position
you need to fill? Visit the Job
Fair. |
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| About Us :
Water and Wastewater Newsletter
© 1999-2007 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
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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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you have company news, a new product, new service or other
information you would like to share with our subscribers?
Please submit articles via e-mail, only to: news@waterandwastewater.com |
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::
Professor’s Research Leads to
Advanced Water Filters
::
ATM to Design RO Plant for
LaBelle, FL
::
New Hach G1100 Trace
Oxygen Sensor
::
Strategic Marketing :
Targeted to Your Audience
:: The News Center : More headlines
:: The Water and Wastewater Blog
:: Video Center
:: Help Forum
::
Water and Wastewater Plant
Directory : Featured Plant
:: The Job Fair
:: Top Picks at Amazon.com
:: Ask Tom! Column!
:: 148,000+ visitors in February !
:: Call For Photographs!
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| Hi Everyone, 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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| This
months Ask Tom! article |
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Hose Pumps : Ideal for Abrasive Applications
Guest article by
Chuck Treutel P.E., Watson-Marlow Bredel Pumps
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 We
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Featured
Case History |
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Dupont and GE Join Forces To Conserve Water
This commitment to water
conservation has been particularly evident at the
DuPont de Nemours manufacturing complex at
Dordrecht. “We have a strong corporate commitment to
minimizing the environmental impact of our
manufacturing processes,” says Rob Rasenberg,
Technology Manager, DuPont de Nemours (Nederland)
B.V. “The heat exchangers of our cooling towers
require large volumes of water, and we are
continually seeking ways to conserve this natural...(more) |
More case histories...
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| Call For
Photographs
This weeks photo
is of clean laundry effluent from the IWWS DAF system
installed at Paramount Services, Inc. of Birmingham, AL.
Paramount, a family-owned linen supply business, is now
reusing up to 40%-45% of the water straight from the IWWS
DAF without further treatment.
Photo courtesy
of Denise Coleman of
Industrial Waste Water Services.
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inclusion on our home page, free of charge. Send your
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| Dr. Henry A
Boyter, Chemist
 Henry
is the Institute of Textile Technology (ITT), Director of
Research. His research is directed at the application of
emerging technologies to the improvement of textile material
properties. Dr. Boyter’s experience includes fifteen years
with the textile industry, first as a private researcher and
consultant, then with ITT since 2000.
Henry has become a member of
the
Help Forum since 2005.
Click here to read his profile.
Click here to read his profile. |
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