Autotrophic Denitrification Filler

The core of the autotrophic denitrification technology is the Fe-S coupling biological carrier independently developed by Longantai. This biological carrier consists of Fe-S nanocores and alkalinity loading, offering a large specific surface area and high efficiency.

Operation principle: In anoxic environments, denitrifying bacteria use Fe-S nanocores as electron donors and nitrate (NO₃⁻), nitrite (NO₂⁻), and other nitro pollutants as electron acceptors. Inorganic carbon sources (CO₂, HCO₃⁻, CO₃²⁻) are utilized for metabolic carbon, converting pollutants such as NO₃⁻ and NO₂⁻ in the wastewater into N₂.

The alkalinity loading is evenly distributed within the pores of the coupling biological carrier, forming a synergistic mechanism with the Fe-S nanocores. This effectively balances the pH of the denitrification process, maintaining the alkalinity activity in the water environment.

The Fe-S nanocores also promote the metabolic coupling of microorganisms, leading to self-activation of the denitrification reaction process, achieving efficient, continuous, and stable denitrification.