Denitrification sulfur-iron composite filler catalyst and preparation method thereof

• Main Authors: MA CHENGLING, SHI XINGANG
• Format: Patent
• Language: Chinese; English
• Published: 22.04.2025
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention is applicable to the technical field of sewage treatment, and provides a denitrifying sulfur-iron composite filler catalyst and a preparation method thereof, the denitrifying sulfur-iron composite filler catalyst comprises a material A and a material B. The material A is a strain; the material B comprises microporous aggregate, a coating material and a starch layer; the microporous aggregate comprises activated carbon, sponge iron, silicon sulfide and silicon carbide; the coating material comprises a carbon source, a nitrogen source, sulfur powder and iron powder; the mass ratio of the material A to the material B is (1-3): (50-90); preferably, the strain comprises thiobacillus denitrificans, sulfur bacteria and a culture medium, and the content of the thiobacillus denitrificans in the culture medium is (1-5) * 10 < 10 > CFU/ml, and the content of the sulfur bacteria in the culture medium is (0.5-1.5) * 10 < 10 > CFU/ml; the culture medium comprises the following components: 1-2g of ammonium chl