Research on performance differences and mechanisms of sulfur-iron composite packing materials prepared from different iron sources in nitrogen and phosphorus removal from wastewater

Key Points

• Nitrogen removal efficiency varied significantly based on iron source in composite packing materials, demonstrating tailored effectiveness.
• Phosphorus removal also showed variable success linked to different preparation methods of sulfur-iron composites, impacting wastewater treatment outcomes.
• Analysis of sulfur-iron composite packing materials provided insights into the mechanisms driving performance differences and their applications.
• Understanding the performance of these materials may enable enhanced strategies for wastewater treatment and nutrient cycling.