GA Trade May-Jun interactive - page 26

E
veryNewYorker produces
approximately 100 gallons of
wastewater per day by using tap
water, runningwashingmachines or
flushing toilets. Together with
commercial and industrial wastewater
this adds up to about 1.3 billion
gallons of wastewater per day, which
has to be treated by the NewYork
DEP's 14wastewater treatment plants.
Themain challenge inmunicipal
wastewater treatment nowadays is
not the treatment process itself, but
the energy-efficient operation of the
treatment plants. Themid-term goal
is to run large wastewater treatment
plants without additional energy
from the net. There are two
key-factors to success:
1) The optimum conversion from
energy contained in the waste-
water andwaste sludge to
electrical energy
2) The consequent reduction of the
energy demand of the key
machinery equipment.
TheGermanwater andwastewater
specialist Invent Umwelt- und
VerfahrenstechnikAG has specialized
on the second point, and develops
highly efficientmachinery compo-
nents for water andwastewater
treatment plants. Since the city's DEP
ran a test of the Invent equipment, in
this case an energy efficient hyperbo-
loidmixer for the anaerobic and
anoxic removal of phosphorus and
nitrogen, in 2004, Invent has been
approved as supplier to theNewYork
DEP. The comprehensive test was
executed by the experts fromCity
College of NewYork and it showed
that the innovative Invent technology
could help the city to savemillions of
dollars in energy andmaintenance
costs. The Invent HYPERCLASSIC®-
Mixer only used 50% of the energy,
the existing technology consumed,
ismuchmore reliable and needs less
maintenance. Meanwhile the City has
converted threemajor wastewater
treatment plants to Invent equipment:
Bowery Bay,
Wards Island, and
Jamaica
and cleans its wastewater withmuch
less energy.
INVENT Stirs upNewYork’s
Wastewater Treatment Plants
GermanWater andWasteWater Specialist
Helps New York DEP to Save Energy
G T A I I N D U S T R Y T A L K
Dr.-Ing.MarcusHöfken
President&CEOof INVENTUVAG
3out of 90 InventHyperclassicMixersat
theBoweryBayWastewater Treatment Plant
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GermanAmerican TradeMay/June 2014
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