LIU Chunshuang, LI Jiaguo, YAN Laihong, et al. Simultaneous biological removal of nitrate, sulfide and ammonia from wastewater and its mechanism[J]. CIESC Journal, 2015, (2): 779-784.
LIU Chunshuang, LI Jiaguo, YAN Laihong, et al. Simultaneous biological removal of nitrate, sulfide and ammonia from wastewater and its mechanism[J]. CIESC Journal, 2015, (2): 779-784.DOI: 10.11949/j.issn.0438-1157.20141091.
sulfide and ammonia could be realized at HRT of 12 h
temperature of 30℃±2℃ and influent pH of 7.5. The removal rates were up to 95%
90% and 99% for ammonia
nitrate and sulfide at influence concentrations of 22—35 mg N·L-1
22—35 mg N·L-1 and 50—90 mg S·L-1
respectively. Most of sulfide removed was converted to elemental sulfur (S0) and the conversion rate was as high as 89%. Batch experiment results indicated that presence of sulfide could enhance simultaneous removal of nitrate and ammonia. The results of this study provided an innovative idea for the development of sulfide- and nitrogenous contaminants- laden wastewater treatment technology.