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Wetlands Curb Hog Hormones in
Wastewater
 Washington
DC -- Recently, hog-farm operators have begun incorporating
constructed wetlands into their wastewater treatments to
reduce nitrogen and phosphorus in the effluent so that it
can be spread onto crop fields without causing environmental
harm. But little, if any, research has investigated the
system's potential to diminish hormones that hogs excrete
into wastewater.
The paper's authors are Nancy
Shappell and Lloyd Billey with the ARS Biosciences Research
Laboratory in Fargo, N.D.; Dean Forbes and G.P. Reddy of
North Carolina Agricultural and Technical State University
at Greensboro; and Terry Matheny, Matthew Poach and Patrick
Hunt at the ARS Coastal Plains Soil, Water and Plant
Research Center in Florence, S.C.
The work dovetails with
increasing concern that hormones from livestock waste and
other sources are accumulating in the environment and
disrupting the endocrine-system function of fish and other
aquatic life.
The team's 2004-05 study,
conducted at a Greensboro hog-farrowing facility, checked
for reproductive hormones—estrogens and androgens (including
testosterone) and their metabolites. First, wastewater from
the facility went into a manure pit, then into a series of
lagoons for microbial degradation. Next, the effluent was
pumped into one of four wetlands, then into a storage pond.
To close the circuit, some of the "gray" water was flushed
back into the barns. The wetland consisted of marsh areas
with cattails and pond area, which was either open or
covered with floating mats of vegetation.
The researchers took water
samples over three seasons in 2004, and weekly in July 2005.
They analyzed them for hormones, including a naturally
secreted estrogen called estradiol, using
liquid-chromatography mass-spectrometry analysis and the
E-screen. The latter contains human mammary cells that
multiply when exposed to estrogenic compounds.
By analyzing the effluent both
before and after passing through the constructed wetlands,
they determined the wetlands reduced estradiol activity by
83 to 93 percent. This reduction included estrone, the most
prevalent of the estradiol metabolites.
ARS is the U.S. Department of
Agriculture's chief scientific research agency.
Source:
http://www.ars.usda.gov/
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This
newsletter is sponsored by:
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Amiad : New AMF2 Microfiber
Filter
Oxnard, CA -- Amiad Filtration
Systems announces the AMF2 Microfiber Filter. Innovative
self-cleaning microfiber water filters for treatment as fine
as 2 micron.
The "AMF2" Filter Series benefits
include:
-TSS, NTU & SDI reduction for potable and waste water
applications
-Effective removal of Giardia cysts and Cryptosporidium
-Cartridge performance without cartridge replacement
-Outperforms traditional sand media systems
-Pre-filtration for R.O. and other sub micron systems
-Environmentally friendly – no chemical treatment required
for self-cleaning process
How the AMF2 Filter Works:
The AMF2 filter removes dirt particles as water flows
through multi-layered microfiber cassettes. These are
attached to collector pipes which allow the processed water
to flow from the filter via the outlets. Dirt particles that
accumulate on and in-between the microfiber layers create a
pressure differential. At a preset pressure differential
value or time interval, the control unit activates the
self-cleaning cycle.
About Amiad Filtration
For more than 40 years, Amiad
Filtration Systems has helped meet the need for clean water
by developing a comprehensive line of exceptionally
efficient, automatic, self-cleaning filters and manual
filters for use in industry, municipalities, and irrigation.
For more information visit:
http://www.amiadusa.com/ |
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Arab Countries form Water
Utilities Association
 Hennef,
Germany -- Water supply and wastewater utilities of more
than ten member countries of the UN-ESCWA region (United
Nations Economic and Social Commission for Western Asia)
decided during the first consultative meeting from 4th to
6th September 2006 in Cairo (Egypt) on the establishment of
the ACWUA - the Arab Countries Water Utilities Association.
The
European Water Association (EWA) together with the German
Association for Water, Wastewater and Waste e. V. (DWA) have
been invited to this meeting, in order to bring in their
authority and experiences in the establishment and
management of an association.
A
network of water and wastewater specialists in the Arab
world
The
association of water and wastewater utilities and service
providers in the region is to contribute to a substantial
increase in technical capacities by exchange of experience
and knowledge, standardization and benchmarking. The
participants are to be enabled to improve the services
provided to their customers.
The
association would also act as a stakeholder. At the first
meeting in Cairo representatives from Bahrain, Egypt,
Jordan, Kuwait, Lebanon, Oman, Palestine, Syria, the United
Arab Emirates and Yemen were involved.
The
first meeting of high-ranking representatives in Cairo
The
first consultative meeting of the Arab Countries Water
Utilities Association (ACWUA) in the course of formation,
was organized by UN-ESCWA (United Nations Economic and
Social Commission for Western Asia) and the Deutsche
Gesellschaft Technische Zusammenarbeit (GTZ).
Goal
of this first meeting of representatives from water
utilities and service providers of the Arab countries was,
to determine the need and the modalities for the
establishment of such an association of water specialists in
the Arab world. In preparation of this meeting, EWA and DWA
were already involved in the elaboration of background
papers.
Workshop held and Steering Committee elected
During
the three-day meeting the participants from ten UN-ESCWA
member countries discussed in several working groups the
challenges of improved water supply and sewage disposal, the
importance of facilitated knowledge, information and
experience exchange as well as technology transfer amongst
water specialists.
The
particular working groups looked into, amongst other things,
the different possibilities regarding structure, membership,
organization’s governance, financial sustainability and
fields of activities.
On the
last day the participants endorsed the establishment of an
Arab association of utilities and service providers and
elected a provisional Steering Committee, which consists of
ten members. This committee approved Mr. Bassam Jaber,
Lebanon, as chairman and Mr. Mohamed El Alfy, Egypt, as
alternate coordinator.
Follow-up meeting/ Foundation of the association in April
2007 DWA as being the German member of the EWA will be
organizing the next meeting of the Steering Committee from
10 to 15 December
2006 in Hennef, Germany.
A
further meeting is envisaged in Bahrain in January 2007
during the Water Middle East, followed by the foundation
meeting of the association in April 2007 (provisional date)
in Beirut. Together with further experienced international
consultants, the EWA and DWA will participate also in the
following meetings of the ACWUA.
Further information is available at:
http://www.ACWUA.org/
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New
Sludge Blanket Level Analyzer from Entech
 Denton,
TX - Entech Design, Inc.’s BinMinder 9300 features a
multi-channel analyzer designed for superior sludge level
detection in the full range of water and wastewater
applications.
The system consists of an analyzer
that is capable of operating from one to four sensors or
transducers for reliable and cost-effective measurement.
Measurements are made by transmitting a high frequency sound
wave and measuring the interval between sensor origin and the
sludge blanket below.
Since the transmit speed is known,
elapsed time can be converted to the distance between the sensor
and the sludge blanket interface. BinMinder 9300 features a
simple and easy to use automatic initialization routine upon
startup and an automatic gain feature for continued operation.
Automatic self-cleaning wiper
transducers as well as high temperature stainless steel
transducers are also available. BinMinder 9300-ETS combines
ultrasonic sludge level measurement and reliable 90 degree
scattered light turbidity in a dual purpose sensor.
Water and wastewater applications for
BinMinder 9300 include clarifiers, thickeners, sedimentation
basins, contact clarifiers, raw water clarifiers, dewatering
bins, round and rectangular tanks, and many other municipal and
industrial applications.
Primary benefits include reduced
labor costs and exposure to unsanitary process environment,
automatic sludge pumping (RAS and WAS), advance warning of
solids wash out and other clarifier upset conditions, optimized
effluent water quality, and maximized underflow concentration.
About Entech Design
Since 1991, Entech Design has been an
innovative manufacturer of quality sonar interface detection
instruments. Our equipment uses fixed-point transducers (in
single and multiple sensor configurations) for simple sediment
level, blanket level and liquid level detection and employs
remotely controlled scanning transducers to produce three
dimensional images of sediment in power industry bottom ash
hoppers and slag tanks.
For more information contact:
Entech Design, Inc.
315 S. Locust
Denton, TX 76201
Telephone: 940-898-1173
Email:
entech@entechdesign.com
Web Site:
http://www.blanketlevel.com/ |
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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. Nyunt wants help with polymers:
Wastewater from a food
processing (oil) plant is treated using two polymer
flocculants, cationic and anionic.
I only encountered using 1
polymer only; mostly Anionic. Does any body know how two
polymers works?
Click
here to post a reply)
Thanks
San Linn Nyunt
Kurita
slnyunt@hotmail.com
Ms. Rice needs help with setting RAS rate:
A few years ago, I attended a
Process Control class that emphasized setting the RAS rate
at the "knee" in the SSC curve. So, let's say my "knee" is
90 min.
How do I know how long the
sludge is in the clarifier? Knowing I only want the sludge
in there 90 min, how do I know how much to adjust the RAS?
I guess my real question
should be, How do I calculate the retention time for the
sludge in the clarifiers? (Click
here to post a reply)
Thanks,
Jennifer Rice
Marathon Petroleum Company LLC
jenniferrice@marathonpetroleum.com
Help Forum:
Share your
expertise with others in our
Help
Forum. |
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| Water
and Wastewater Plant Directory - Featured Plant
 Murfreesboro
Wastewater Treatment Plant
Murfreesboro, Tennessee
A completely new
wastewater treatment plant was placed in operation
in 2000. This plant utilizes a biological process to
convert pollutants to settable solids, which are
then removed by settling, then dewatered... (click
here to read more)
Click here to visit
the
Water and Wastewater Plants Directory
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| From the Job
Fair: Industrial
Wastewater Mechanic - Orlando, FL
My client in Orlando, FL is
looking for an Industrial Mechanic for their
Water/Wastewater facility.
General Functions:
Performs mechanical repairs and preventive maintenance on
pumping systems, blowers, gearboxes and mechanical drive
systems, in a major industrial plant environment or the
water and wastewater field with multiple critical processes.
Installs new pumps and piping as needed to repair and update
obsolete equipment. Rebuilds pumps replacing bearings,
shafts, seals and bushings. Replace machine parts and
retrofit equipment with modifications to reduce failures and
increase pump efficiency. Works with hydraulics, pneumatic
and electrical control systems. Supervise other technicians
in the repair and maintenance of processing equipment.
Minimum Qualifications:
High School Diploma or equivalent and 1-2 years work
experience mechanical experience in an industrial complex or
a water or wastewater treatment facility.
Equipment Skills Required:
Operational experience with drill presses, bearing presses,
band saws and other machine shop equipment, portable
electric and pneumatic tools. Exposure to the use of
portable pumps and generators. Welding experience and
exposure to heavy equipment operations.
Preferences: Experience
in water and wastewater operations and processes and
knowledge of related trades. Knowledge and skills in
maintaining hydraulic and pneumatic systems needed to
undertake the various repair tasks. Familiar with the rules
governing safe crane operation or possession of safe crane
certification. Heavy equipment and forklift operating
skills.
This is an entry to mid level
contract position. Pay is $14/hr. May lead to a
permanent position. Candidates MUST be US Citizens or
currently eligible to work in the US. Position must be
filled by the end of January.
Email your Word resume to
rcaldwell@etipros.com
Attn: Ms. Caldwell
The Job Fair:
A free
service of Water and Wastewater.com. You can post job
opening for managers, engineers, sales, reps or other
talented people you need. ...Or one can post their resume
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
Phone: 904-280-4656
Fax: 904-273-1399
Email: jtaylor@waterandwastewater.com
Water and Wastewater
Newsletter is a 100% opt-in e-mail list of information for
the water and wastewater treatment professional. Do
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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::
Wetlands Curb Hog Hormones
in Wastewater
::
Amiad : New AMF2 Microfiber
Filter
::
Arab Countries form Water
Utilities Association
::
New Sludge Blanket Level
Analyzer
from Entech
:: Happy Holidays!
:: The Water and Wastewater Blog
:: Help Forum
::
Water and Wastewater Plant
Directory : Featured Plant
:: The Job Fair
:: Top Picks at Amazon.com
:: Ask Tom! Column!
:: 138,000+ visitors in December !
:: Call For Photographs!
:: Subscribe, Unsubscribe
:: Archive Information
:: About Us
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| Hi Everyone,
Best wishes for the New Year!
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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Concentrating RO Reject Streams with VSEP
Guest article by Dr. Brad Culkin, New Logic Research,
Inc.
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 We
Need Your
Guest Articles!
Do you have an area of expertise in water and wastewater
treatment, have you solved a difficult problem? Share your
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Featured
Case History |
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Aeration System Demonstrates High Oxygen Transfer
The ratio of oxygen
transfer in process water compared to the oxygen
transfer in clean water, also known as the Alpha
factor, is a critical consideration when designing
an activated sludge wastewater treatment plant
(WWTP). Mixed Liquor Suspended Solids (MLSS) can
cause lower Alpha factors for some aeration
processes....(more) |
More case histories...
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| Call For
Photographs
This weeks photo is of the
first "Self Powered" wastewater reclamation plant, located
in Australia. It turns out six star Class A++ water and is
thought to be the first wastewater treatment unit fully
powered by energy extracted from the very waste products
that it treats.
Photo courtesy of Christian
Uhrig of
EcoNova
Send us
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photograph and description to: news@waterandwastewater.com
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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.
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