Nitrate In Water
Nitrate water pollution is a major problem throughout the world. Elevated nitrated levels in wastewater can lead to:
- Eutrophication of natural water bodies which causes algal blooms that severely harm water quality and the aquatic environment
- Health issues is present in high concentrations, such as Infant Methemoglobinemia (blue baby syndrome) and increasing links to various forms of cancer
For these reasons, Governments and water authorities around the world are placing increasingly strict regulations on nitrate concentrations for discharge/disposal to the environment, and in drinking water applications.
Traditional nitrate removal plants use bacteria to break down nitrates in waste waters, which are often not able to meet the strictest (<5 ppm) nitrate effluent concentrations required for disposal of water into sensitive environments such as rivers, lakes and drinking water catchments. This challenge is even greater during colder weather months when bacteria are less active.
Nitrate Removal Technologies
Our BIOCLENS® lenses contain encapsulated, living bacteria in a stable, porous PVA gel matrix. The bacteria are specifically selected for denitrification in fresh and seawater conditions, where nitrate / nitrite are converted into harmless nitrogen gas.
BIONEX™ is well suited for polishing nitrate to <1 ppm for large flowrates of water (>1 MLD). Ion exchange resin is used as the primary treatment method to efficiently remove nitrate to low levels in all conditions. BIOCLENS® are then used on the concentrated nitrate stream to remove the nitrate, allowing the waste brine to be reused to regenerate the ion exchange resin. This greatly reduces the chemical consumption, waste production, and operating cost of the plant.