Nitrate Treatment

Divider text here
Nitrate Treatment
Divider text here
Nitrates can be present in groundwater and surface water for many reasons. The most common sources of nitrate contamination in surface and groundwater can be as a result of blasting operations at mines, from storage of flue gas waste water, spills and accidental releases on industrial sites as well as from the biological degradation of nitrogen based organic compounds.

Membrane Bioreactor

Divider text here
Nitrates can be broken down in to nitrogen gas with denitrifying bacteria in an anoxic environment. Newterra’s MBR process is ideal for biological breakdown of nitrates while our ultrafiltration membrane ensures pristine effluent quality when discharging to sensitive water bodies. Our MBR process, when applied to nitrates includes a combination of anoxic and aerobic reaction tanks followed by our ultrafiltration membrane.

Reverse Osmosis (RO)

Divider text here
RO membranes can be applied for nitrate rejection in selected applications where there are efficient solutions for disposal of the concentrate wastewater. Special membranes are often required to reduce ion leakage through the membrane and multiple passes may be implemented to achieve designed effluent conditions. RO technology can also be applied as the first stage in concentrating nitrates upstream of other technologies such as evaporators.

Ion Exchange

Divider text here
Ion exchange is also an effective method of removing nitrates in the water. Nitrate anions are typically exchanged on the resin with chloride anions. Strong base anion resins work to remove nitrates but will prefer sulfates making them less effective in water bearing high sulfates. Newterra also offers a nitrate specific resin in the chloride form with a preference for nitrates over sulfates. This product will often be a better choice for treatment of nitrates in ground streams as nitrates are not prone to dumping off the resin as higher sulfate concentrations take preferential places on the resin.