Details

Autor(en) / Beteiligte

• Yan, Jia
• Wen, Huijun
• Li, Qingqing
• Wang, Siji
• Xie, Jiehui
• Chen, Meiping
• Li, Jiayi
• Chang, Xiangyang
• Zhang, Hongguo
• Hong, Yiguo

Titel

Enhanced elemental sulfur recovery and nitrogen removal through coupling of sulfide-dependent denitrification and anammox processes during ammonium- and sulfide-laden waste stream treatment

Ist Teil von

• International biodeterioration & biodegradation, 2020-11, Vol.155, p.105086, Article 105086

Ort / Verlag

Barking: Elsevier Ltd

Erscheinungsjahr

2020

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Influence of anammox process on autotrophic denitrification was investigated in this study, during simultaneous ammonium, nitrate and sulfide treatment. Elemental sulfur production and nitrogen removal by sulfide-dependent denitrifier (S-den) and mixed culture (S-den-anammox) were compared. Accumulation of nitrite (100%) and elemental sulfur (46.3%) was achieved at pH 7.0 and 30 °C with S2O32−/NO3− ratio of 1:1 by autotrophic denitrifier. Enhanced elemental sulfur production (56.5%–99.5%) by autotrophic denitrifier was obtained after coupling with anammox process. Total nitrogen removal increased to 80.5% in mixed culture reactor, which was 72.0% in anammox reactor. N2O emission in anammox reactor was not affected (<0.5% gaseous nitrogen) after coupling with autotrophic denitrification. Therefore, this study demonstrated enhanced elemental sulfur recovery and nitrogen removal through coupling of sulfide-dependent denitrification and anammox processes, which might be a potential technology for water eutrophication and corrosion control, and atmospheric acid rain, PM2.5 and global warming control. [Display omitted] •Removal of NO3−, S2− and NH4+ was achieved in sulfide-dependent DEAMOX process.•Elemental sulfur production was enhanced 26.8% after cooperation with anammox.•TN removal increased about 10% in sulfide-dependent DEAMOX reactor.•NOx was lower than 0.5% gaseous nitrogen in sulfide-dependent DEAMOX reactor.