Enhancement of Sulfur Autotrophic Denitrification by Solid-State Carbon Source PHBV for Nitrate Removal of Aquaculture Wastewater

Processes, Journal Year: 2025, Volume and Issue: 13(1), P. 265 - 265

Published: Jan. 17, 2025

The aim of this study was to evaluate the effect a solid slow-release carbon source (3-hydroxybutyrate-co-3-hydroxyvalerate, PHBV) on heterotrophic and sulfur autotrophic cooperative denitrification (HAD) aquaculture wastewater. Batch tests were carried out analyze different PHBV/S volume ratios in range 30–70% synthetic wastewater under short hydraulic retention time (HRT). performance HAD process showed that NO3−-N removal increased with an increase ratio. When ratio reached 70%, average concentration effluent 0.38 mg/L stable phase. variation pH alkalinity value residual above 7.03 57.63 at 50%. Based relationship between sulfate generation nitrate PHBV/S, analysis proportion (HD) autotraophic (SAD) enhanced 50%, competition for substrates occurred 70%.

Language: Английский

Effect of iron-carbon microelectrolysis and magnetite on biological nitrogen removal: analysis of microbial communities, functional genes, and mechanisms

Environmental Research, Journal Year: 2025, Volume and Issue: unknown, P. 121229 - 121229

Published: Feb. 1, 2025

Language: Английский

Impact of salinity on nitrogen removal pathways and microbial community dynamics in a coupled partial nitrification-short-cut sulfur autotrophic denitrification system

Journal of Water Process Engineering, Journal Year: 2025, Volume and Issue: 72, P. 107355 - 107355

Published: March 11, 2025

Language: Английский