Desalination Breakthrough Creates Jobs, Cleaner Energy
Water & Wastewater
8 December 2009
By Dohnia Dorman
Kittanning, PA -- Pennsylvania’s prolific Marcellus Shale natural gas
basin has given the state a remarkable, once-in-a-lifetime opportunity
to create high-paying, green-tech jobs while providing cleaner energy
for the nation. However, critical water resource problems have
the potential to kill this exciting opportunity unless both water
disposal and water re-use challenges can be solved with new and better
technology.
The opportunity is in producing clean-burning natural gas – and lots of
it. Recent technological innovations in horizontal drilling and
hydraulic fracturing have reopened the 54,000 square mile Marcellus
Shale Basin, stretching across Pennsylvania and portions of New York,
Ohio and West Virginia. Officials estimate that the Marcellus
Shale has the potential to produce nearly 500 trillion cubic feet of
gas – enough to supply all of the U.S. needs for nearly two decades.
The vision of an era of natural gas, a cleaner energy for the nation,
coming from Pennsylvania and surrounding states, is poised to take off
in a big way.
But there’s a problem. Before this vision can become a reality,
acute water disposal and supply restrictions must be solved. The new
“frac” technology being deployed to access the Marcellus shale gas
6,000 feet below the surface requires up to two million gallons of
water per well to be injected into the ground at tremendous pressure.
When that water flows back to the surface, it returns with high amounts
of “total dissolved solids (TDS),” or naturally-occurring salts that
dissolve in frac water, and must be disposed of in an environmentally
safe manner. To date, this dirty salty water has been trucked off-site
to commercial and municipal sewer treatment plants. These plants are
not capable of removing the salts, but merely dilute the dirty water
with other wastewaters in order to comply with discharge requirements
to the state’s waterways.
When the high TDS water is discharged into PA’s watersheds, numerous
human and aquatic health concerns arise, including allegations of huge
kill of fish, mussels and other aquatic life along the Dunkard Creek in
Greene County in western PA. Late last year the state acted, ordering
that a little over a year from now, on January 1, 2011, all water used
in the drilling of natural gas wells will be prohibited from being put
back into Pennsylvania’s waters, unless it is first treated to remove
the salts.
This ruling, in turn, has threatened to halt the state’s natural gas
expansion, limiting the creation of tens of thousands of jobs, and
keeping cleaner-burning natural gas away from east coast customers
hungry for a cleaner source of energy than either coal or imported oil.
Without an economical and sustainable water resource solution, further
development of the huge Marcellus Basin is at risk.
“If you’re not removing the salts, you’re not really solving the
problem,” said Stan Berdell, President of BLX, Inc., a natural gas
producer in western Pennsylvania.
“Our industry has no choice but to limit our growth if we can’t find a
way to clean the salt out of this water so that it can be re-used again
and again for our next frac jobs.”
The answer has come from a New Mexico company, Altela, Inc., that
has come up with a solution for BLX’s natural gas wells near Eau
Claire, PA (coincidentally in keeping with the town’s name’s meaning:
‘clear water’, in French). Last month, the two companies placed into
operation a new water purification unit directly at the well head that
purifies the frac water to remove the salts and other contaminants, so
that BLX can use the water again and again for the same frac process.
And when they are done with the water, it can go back into the river,
in a state purer even than drinking water.
“Recent water restrictions from the Pennsylvania Department of
Environmental Protection (DEP), both from the freshwater side as well
as the wastewater disposal side, will limit the pace of tapping
Marcellus natural gas,” said David Kohl, of CWM Environmental, Inc., a
local environmental company. “Until an economically viable water
desalination process proves itself in the field, industry tends to be
skeptical. Well, now that problem has been solved with this
Altela unit.”
The new water treatment unit, built by Altela, Inc. of Albuquerque,
started purifying water last month at the BLX well head, and results
show a complete success in the purification process. The mobile
AltelaRain® system is 45 feet long and 8 feet wide – similar in
size to a semi-tractor trailer. It is continuously converting the
brackish frac water into water that is less than 50 mg/liter in salt
concentration – about ten times cleaner than municipal drinking water.
“Altela’s new technology has created a unique opportunity for PA’s
shale-gas industry to beneficially re-use and expand water
supplies. The natural gas industry can now become a key element
of environmental sustainability and stewardship here in the
northeastern Unites States,” said Berdell.
Altela has patented its new desalination process that economically
removes all salts and other contaminants with a movable unit that sits
directly at the gas wells. The innovation from Altela that allows
the process to be so economical is centered around its non-pressurized
technology, for which it can use inexpensive plastics, rather than
corrodible metal, to purify these brackish waters. Its recent
success in the Marcellus builds upon the company’s prior installations
in the western United States and Canada, including receiving the
first-ever water discharge regulatory permit to place clean treated
oil-field water directly into the most pristine reach of the Colorado
River.
“We don’t use pressure,” said CEO Ned Godshall, “so our product is much
less expensive because it doesn’t have to have exotic metals to reduce
their inherent corrosion. Our inexpensive plastic holds up to
these brackish waters and that means our system provides clean water at
a very economical price, from this 360-million-year-old Marcellus Shale
brackish water. This is a real ‘win-win’ for both the environment
and U.S. energy independence, since the water for the new wells being
frac’d will be recycled water, rather than new water from
Pennsylvania’s waterways.”
With thousands of PA acres leased by large natural gas companies, and
thousands of wells ready to be tapped in Pennsylvania alone, a single
Altela unit will not be enough to handle the water demand. Altela
has already designed a centralized plant for eastern Pennsylvania to
handle the load from the wells in that area. PA’s DEP estimates
that 16 million gallons per day of freshwater will be used by the
shale-gas industry in 2010, and will increase to 19 million gallons per
day by 2011.
Pennsylvania’s natural gas industry, which is poised to roar back to
life and produce thousands of jobs and clean energy for decades to
come, now has a powerful water management solution to move forward in
an environmentally sustainable manner. Companies can now continue
to drill the wells in the massive Marcellus Shale, extract the natural
gas, recycle the water, and then put that water into Pennsylvania’s
rivers, cleaner than drinking water.
Natural gas wells in the Marcellus Shale basin can now be completed in
a sustainable manner, providing a clean source of energy to the
northeast United States for decades to come, without having to
sacrifice the quality of the state’s pristine rivers and waterways.
Source: http://www.altelainc.com/