From acetate-driven partial denitrification (PD) to N-Methylpyrrolidone-driven PD: Microbial community, metabolic pathway and functional genes.

With the rapid development of the new energy industry, the wastewater discharged from battery production industries has increased significantly, in which N-Methylpyrrolidone (NMP) have aroused widespread attention. It is valuable to develop low-cost biological methods for NMP containing wastewater treatment. In this study, an NMP-driven PD system was acclimated in an sequencing batch reactor (SBR) by gradually replacing the sodium acetate with NMP.

[Progress in the Application of Biochar in Constructed Wetland].

Constructed wetlands, serving as artificially simulated natural wetland water treatment systems, have emerged as effective technologies for ecologically treating wastewater. Biochar, a carbon material derived from biomass waste pyrolysis, possesses significant specific surface area, abundant functional groups, and high stability. The integration of biochar into artificial wetland systems enhances the removal efficiency of pollutants.