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Autotrophic Denitrification Catalyst

Autotrophic Denitrification Catalyst is a new type of biological catalytic material based on sulfide electron donors. It is specifically designed to solve the problem of deep denitrification of wastewater with a low carbon-to-nitrogen ratio. By promoting the attachment and growth of sulfur-oxidizing bacteria and utilizing elemental sulfur as the electron donor, it efficiently reduces nitrate nitrogen (NO₃⁻-N) in water to nitrogen gas, without the need for the addition of organic carbon sources. The operation is stable and reliable.

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Autotrophic Denitrification Catalyst

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  • Product Description
  • Autotrophic Denitrification Catalyst is an efficient biological filter material. It promotes the growth and metabolism of autotrophic microorganisms, using inorganic substances such as sulfur as energy sources, and is specifically used for highly efficient removal of specific pollutants in water. Compared with traditional biological filtration technology, this material demonstrates significant advantages in terms of high treatment efficiency, low operating costs, and more stable system performance when dealing with domestic sewage, industrial wastewater, and aquaculture effluents.

    Application fields: 

    • Municipal wastewater treatment plant: It is used for deep nitrogen removal after secondary biological treatment, serving as an alternative or in combination with heterotrophic denitrification process to achieve low-cost compliance with discharge standards (such as the surface water Class IV water standards). 
    • Industrial wastewater treatment: Particularly suitable for low-carbon nitrogen ratio nitrate-containing wastewater produced by industries such as garbage leachate, electronics, glass, and fertilizers. 
    • Drinking water safety guarantee: It is used to remove excessive nitrate in groundwater, ensuring the safety of drinking water sources. 
    • Aquaculture water treatment: Effectively removes nitrite and nitrate from the aquaculture recirculating water, improving water quality.
    Product nameSulfur autotrophic denitrification filter
    Particle size range3-8mm
    Poriness≥45-55%
    Bulk density1.2-1.3g/cm3
    Sulfur content30-80%
    Surface area≥6*104cm3/g
    Cylinder compressive strength>4.8Mpa
    Silt content<3%

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