- Communities to Get Help with Pollutants in Sewer Systems
- LoadBuilder Streamlines Water Demand Assignment Modeling
- Top Picks at Amazon.com
- Ask Tom! Column!
- Pipeline Delumper Reduces Solids
- Advertise on Water and Wastewater.com
- New Online MS Degree offer by Arizona State University
- Hot Messages from the Help Forum
- Call For Photographs!
- From the Job Fair
- Subscribe, Unsubscribe & Archive Information
- About Us
From
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Communities to Get Help with
Pollutants in Sewer Systems
BETHESDA, Md., Aug. 1 /PRNewswire/ --
After years of struggling with increasing numbers of industrial
pollutants in community sewer systems, local publicly-owned
wastewater treatment plants (POTWs) will get some relief via the
federal Environmental Protection Agency (EPA), according to the
Inside EPA newsletter.
The EPA is about to issue a rule that
requires users of industrial rental "shop" towels to
remove free liquids (wring out excess solvents and other fluids)
before sending them to industrial laundries for washing. The EPA
hopes this practice will prevent a majority of highly toxic
pollutants from passing into local POTWs.
Laundered industrial rental towels
are responsible for over 80% of the 13 million pounds of highly
toxic pollutants discharged by the nation's industrial laundries
into local POTWs. These pollutants include organic chemicals and
heavy metals, which have been linked to cancer.
When the EPA completed a national
survey in 1999 to assess the size of the problem as it impacted
local POTWs, they learned that more than 25% of the local POTWs had
difficulties in handling the discharges. Industrial wipers are used
for maintenance and clean-up by many manufacturing plants, machine
shops and other operations.
Industrial wipers are either
disposable, or are washed and reused (known as "rental" or
"shop" towels). Although most commercial laundries in the
US practice some type of pre- treatment for industrial rental towels
before washing, over 87% have no way of removing significant amounts
of these pollutants. So they are frequently discharged into local
wastewaters and/or surface water.
With the new rule, the EPA will
assume oversight for the process, and companies that use industrial
wipers will, for the first time, have clearly written rules to
follow. Currently, industrial rental towels have been managed at
local, county and state levels - each with different standards and
disposability regulations. Industry organizations expect this new
rule will put an end to the hodgepodge of conflicting and confusing
regulations that have made it difficult for companies to follow
More specifics of the new EPA rule
are contained in an Executive Summary developed by SMART (Secondary
Materials and Recycled Textiles) Association for local communities
and customers.
For a copy write to: SMART Association
7910 Woodmont Ave., Suite 1130
Bethesda, MD 20814
Email to smartasn@erols.com Web site: http://www.smartasn.org/
Ask for the EPA Executive Summary 1-2002.
Modeling
Based on Spatial Data
LoadBuilder
Streamlines Water Demand Assignment Modeling
WATERBURY, Conn., Jul 29, 2002
/PRNewswire via COMTEX/ -- Haestad Methods today announced the
release of LoadBuilder, a GIS-integrated module that automatically
assigns and projects water demands for hydraulic modeling based on
spatial data such as billing meter records, land-use information,
and population estimates. LoadBuilder enables modelers and GIS
professionals to take advantage of data they already collect and use
it to quickly construct accurate hydraulic models.
"The
consumption of water is the driving force behind the hydraulic
dynamics of water distribution systems," said Dr. Zheng Wu,
Chief Engineer of Hydroinformatics for Haestad Methods. "So, an
accurate representation of system demands is critical. The most
common method of loading a water distribution model involves the
spatial allocation of demands. LoadBuilder(TM) leverages the spatial
analysis abilities of GIS software and uses any type of source
data-whether that be geocoded billing meter records, water
production data, census tracts, land use zoning, traffic analysis
zones, meter routes, or demand density information."
The core capabilities of LoadBuilder
include:
Demand Allocation - Users can
automatically assign customer meter data to the nearest network
modeling node or pipe.
Demand Distribution - If water
consumption or production is measured for larger areas such as
meter routes or pressure zones, it can be equally distributed
among demand nodes or divided proportionally based on land area
or customer population.
Demand Projection - LoadBuilder
simplifies master planning by projecting future demands based on
phased land-use projections, estimated population growth, and
system build-out.
Unaccounted - for Water
Estimation-Modelers can assign unaccounted-for water to the
entire system or to smaller areas using a variety of approaches.
Improving productivity is the driving
force behind LoadBuilder. Engineers can dynamically update their
hydraulic models with the latest billing data by using persistent
and reusable demand allocation templates that afford one- click
access to the latest demand data. Users can also apply LoadBuilder's
results to the model by creating new demand alternatives, appending
or overwriting existing ones, or exporting the results for
convenient reuse. This functionality allows modelers to easily
evaluate different water usage scenarios.
Diego Diaz, Lead Software Engineer
for Haestad Methods, commented, "LoadBuilder sets a new
standard for flexibility. With eight allocation, distribution, and
projection strategies that can be used alone or in combination; a
wide variety of acceptable source data types; and an array of
options for applying results to the model, LoadBuilder is the most
comprehensive package available for the automatic assignment of
water use to hydraulic models."
LoadBuilder is included with
WaterGEMS, Haestad Methods' utility-wide solution for GIS-based
water distribution modeling and management.
For more information contact:
Haestad Methods
Telephone: 800-727-6555 (USA and Canada) or +1-203-755-1666
Email info@haestad.com
Web site: http://www.haestad.com/
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 knowledge with others and promote yourself
by contributing an article to the Ask Tom! Column. For more information, please contact
Tom Keenan at: info@nesa.ie
Eliminates
Clogged Pumps
Pipeline Delumper Reduces Solids
The Pipeline Delumper is an in-line,
fully enclosed pipe-tight machine that operates in liquid, pneumatic
or dry systems. This unit has proven its processing and cost
effective benefits in numerous applications worldwide.
The
Pipeline Delumper eliminates stoppages and clogging of pumps due to
solids in the flow. It breaks up clusters, de-agglomerates and
homogenizes, insuring a smooth running free-flowing system. The
units can be supplied with space-saving right angle gear drive as
well as the standard belt drive. The Pipeline Delumper has an
extremely compact, flanged body with straight through design.
This fluid type pressure rated unit
has the full throughput capacity of the pipe to which it is
connected. Its working principle employs rugged impeller teeth
passing through a heavy bar grating to reduce the size of the
product. These teeth completely clear the slots of the bar grating
and at the same time clean the entire pipe cross section area.
A choice of packing seals or
mechanical seals are provided in a convenient cartridge housing.
For more information contact:
Mr. Bill Galanty Franklin Miller, Inc.
60 Okner Parkway
Livingston, NJ 07039
Telephone: (973) 535-9200
Fax: (973) 535-6269
Email: info@franklinmiller.com
Web site: http://www.franklinmiller.com/
33,000+
Visitors in June!
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On Water and Wastewater.com
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water treatment professionals each day visit Water and
Wastewater.com
75% of our visitors surveyed say
they specify or recommend equipment and services for their plant
and other locations
Over 70% of our visitors surveyed
visit Water and Wastewater.com once a week or more.
60% of our visitors are from North
America and another 20% are from Europe
Advertise with us! Banner advertising on Water
and Wastewater.com is a great way to reach this elite group of water
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Ad Rate information page.
Upgrade
Your Skills - Online
New Online MS Degree offer by Arizona
State University
On behalf
of the Environmental Technology Management team at the College of
Technology and Applied Sciences at Arizona State University, I would
like to ask you to inform my fellow subscribers to the Water and
Wastewater Newsletter that we have started a completely On-Line
Master's Degree in Environmental Technology Management.
The M.S. in Technology degree, with a
concentration in Environmental Technology Management, is now
available through a web based distance learning format. Three areas
of study are available: Environmental Management, International
Environmental Management, or Emergency Management.
Tuition for Distance Learning
students will be based upon the normal rates for Arizona residents
and non-residents at Arizona State University. Resident tuition for
the 2001-02 year is $131 per semester hour and non-resident tuition
is $460 per semester hour. An additional fee of approximately $75
per semester hour will be charged for each distance learning course
beginning in January 2003.
Students in this program will be part
of a cohort group that begins each January and graduates 24 months
later at the December ceremony.
Or
contact:
Kiril Hristovski
Office of Environmental Technology
College of Technology and Applied Sciences Arizona State University
East Campus
Telephone: +1-480-727-1322 Kiril.Hristovski@asu.edu
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. Atienza needs help with
sludge aeration:
I need some advise from anyone.
Assuming I have 1,200 ppm BOD and use extended aeration
(24hrs) to treat it, at 90% efficiency I'll get 120ppm, still above
government standard of 50ppm.
If I double the retention time, since
I want to remove chemical process and maintain only the biological
one, will I get below 50ppm BOD?
(Click
here to post a reply)
I am new to this site/forum, but have
been employed in the wastewater industry on the county-level at a
treatment facility in NJ for 16 years, when I left the facility I
was the Chief Mechanic. I have since transferred to a new Township
MUA and have been there for the last 3 years, I have now
"inherited" our drinking water booster stations . I
told the Dept. Head that I was uncomfortable with this, because I
this is all new to me after having all my experience in the
wastewater field not distribution.
I need to know how Altitude valves
work, just replaced the cup leathers and rebuilt the entire valve,
but how does this work with the water tower and distribution system?
Not to shy to ask!
(Click
here to post a reply)
Share your expertise with others in the Help
Forum.
Photos
Wanted
Call For Photographs!
This
week's photo is of Aquastore process and emergency water storage
tank installed at a Palatka, Florida wallboard manufacturing plant,
Lafarge Gypsum. The tank 31 feet in diameter and 102 feet tall
and holds 569,000 gallons of water.
We would love to have your photo of a
water treatment process, new plant or equipment "action
shot" for our home page. If you have a favorite
photograph of water treatment at its best, please e-mail us a jpeg
or gif of the photo with a description of what is in the photo for
our home page.
Civil-Environmental Engineer: Project
Engineer/Manager. 5 to 10 years experience in water and
wastewater treatment, distribution and collection. Engineering
degree required in civil, environmental, or chemical engineering,
P.E., Wisconsin experience, and good communication and people
skills.
Clark Dietz, Inc. offers an excellent
benefits package including medical, dental, life and disability
insurance; paid time off; flexible spending program; 401(k) Plan; 8
paid holidays; bonus plans; and profit sharing.
Send your resume to: Clark Dietz, Inc.
Attn: Lori Krezinski
4235 Green Bay Rd. Suite 200
Kenosha, WI 53144
Fax (217) 373 8211 or 8923
Email: suem@clark-dietz.com
The Job Fair is 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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"...one
of the finest books about facilities systems I have ever
found."
"Offers
complete analysis of valve designs for various industrial flow
applications..."
The
Pipeline Delumper eliminates stoppages and clogging of pumps due to
solids in the flow. It breaks up clusters, de-agglomerates and
homogenizes, insuring a smooth running free-flowing system. The
units can be supplied with space-saving right angle gear drive as
well as the standard belt drive. The Pipeline Delumper has an
extremely compact, flanged body with straight through design.