ARoNite Technology Overview0 pages
22>Nite
nnnnWATER
nnnnDrinking
nnnnWater Treatment
nnnnNitrate
nnnnKey Features
nnnn- Flows: Up to 2,000 gpm
nnnn- Influent NO3" Proven as high
nnnnas 150 mg/l
nnnn- Onsite Hydrogen Production:
nnnnVery small footprint and low
nnnnoperating cost
nnnn- ARoNite Process System:
nnnnSubmerged substrate
nnnnsupports and retains
nnnnautotrophic biofilm and
nnnnprovides complete process
nnnncontrol
nnnn- Fixed-Film Biomass:
nnnnEffectively respires nitrate
nnnnfrom the influent stream as
nnnnit flows through the ARoNite
nnnnmodule
nnnn- Autotrophic Bacteria:
nnnnProduces less biomass than
nnnncompeting biological systems
nnnnthat use heterotrophic
nnnnbacteria. Less biomass means
nnnnless waste.
nnnn^>Nite™ Overview
nnnnNatural Biology. Sustainable Results.
nnnnThe ARoNite (Autotrophic Reduction of Nitrate) process is a fixed-film biological treatment
nnnntechnology for the removal of oxidized contaminants. ARoNite systems rely on naturally
nnnnoccurring bacteria that use hydrogen gas as an electron donor to reduce contaminants in the
nnnninfluent stream. The bacteria take carbon needed for cell synthesis from naturally occuring
nnnnbicarbonate in water from the influent stream. Unlike competing RO an IX processes, AroNite
nnnndoes not create brine streams or other waste residuals. The resulting process is remarkably
nnnntolerant of nitrate variations in feed water quality and produces consistently high quality
nnnneffluent.
nnnnA unique feature of the ARoNite process is its use of hydrogen to support a beneficial biofilm.
nnnnTo maximize performance and assure process safety, ARoNite systems use a specially designed
nnnnsealed growth media which diffuses hydrogen gas directly to the biofilm. As a result, hydrogen
nnnnis used at near stoichiometric (theoretical) rates. Hydrogen can be produced onsite and on-
nnnndemand, completely eliminating issues with gas handling and storage. To further simplify
nnnnoperations, the entire process is fully automated to minimize operations and maintenance.
nnnn^>Nite™ Process
nnnnINFLUENT FLOW
nnnnThe ARoNite process uses a fixed-film bacterial culture to biologically reduce contaminants
nnnnfrom the influent stream. At the heart of every system is the ARoNite module: serving as both
nnnna growth medium and hydrogen delivery substrate in support of the active biological culture.
nnnnThe ARoNite system cultivates a naturally occurring bacteria culture on the surface of a
nnnnproprietary membrane media. The autotrophic bacteria assimilate inorganic carbon from the
nnnnalkalinity, phosphorus, and other trace nutrients directly from the influent stream to build cell
nnnnmass. Nitrate from the influent stream is reduced using hydrogen gas as an electron donor
nnnnIn the respiration process to produce
nnnnharmless nitrogen gas and clean water.
nnnnOver time, cell mass is discarded from
nnnnthe downstream filtration process.
nnnnThe end result is a biological process
nnnnthat directly removes nitrate without
nnnnproducing waste.
nnnnHydrogen is delivered to the sealed
nnnnARoNite media under slight pressure.
nnnnThe growing biomass exerts a demand
nnnnfor hydrogen which then diffuses
nnnndirectly across the membrane and
nnnnIs immediately consumed in the
nnnnrespiration process.
nnnnClean Water.
nnnnNo Waste.®
nnnnWaste Sludge
nnnnARoNite
nnnnmembrane
nnnnMEDIA 'Bio Mass
nnnnARoNite PROCESS CONCEPT
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