A pilot‐scale deep bed denitrification filter for secondary effluent treatment using sodium acetate as external carbon

Abstract

A pilot-scale quartz sand deep bed denitrification filter (DBDF) using sodium acetate as the additional carbon source was implemented to treat secondary effluent, with a high nitrate nitrogen (NO 3 -N) concentration and low C/N ratio, from an urban municipal water resource recovery facility. By the 18th day, results showed that the removal efficiency of NO 3 -N and the chemical oxygen demand (COD) were stable at above 85% and 70%, respectively. When the filter layer depth was set to 1,600 mm and the concentration of additional sodium acetate was maintained at 51 mg/L, the total nitrogen and COD concentrations of the DBDF effluent were stabilized below 5 and 30 mg/L, respectively. The quartz sand DBDF had a good effect on the removal of dissolved organic matter, especially for aromatic protein-like and tryptophan protein-like substances. Bacteria with denitrification function, such as Cloacibacterium and Zoogloea, became increasingly dominant with increasing filling layer depth. © 2018 Water Environment Federation • Practitioner points• The denitrification filter had a good effect on the removal of aromatic protein-like and tryptophan protein-like substances. • Cloacibacterium and Zoogloea became increasingly dominant with increasing filling layer depth.• Key words 3D-EEM; additional carbon source; deep bed denitrification filter; high-throughput; sodium acetate

Tertiary Wastewater Treatment Processes Can Be a Double-Edged Sword for Water Quality Improvement in View of Mitigating Antimicrobial Resistance and Pathogenicity

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Systematic Evaluation of Emerging Wastewater Nutrient Removal and Recovery Technologies to Inform Practice and Advance Resource Efficiency

“…The thickness of lines indicates the number of processes within a given category (e.g., biological processes or biological nitrogen processes), and the size of points indicates the number of processes within a given process group (e.g., microbial fuel cell). A full list of processes, as well as classification into process groups and by core attributes, is included in Table S3-1. − ...…”

Enhanced Denitrification of Integrated Sewage Treatment System by Supplementing Denitrifying Carbon Source

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