TY - JOUR
T1 - Performance and recovery of a completely separated partial nitritation and anammox process treating phenol-containing wastewater
AU - Wang, Wei
AU - Pang, Chao
AU - Sierra, Julian Muñoz
AU - Hu, Zhenhu
AU - Ren, Xuesong
PY - 2018/7/7
Y1 - 2018/7/7
N2 - Anammox process is considered as a promising technology for removing total nitrogen from low-strength ammonium and phenol-containing wastewater. However, it is still a challenge for the anammox process to treat high-strength ammonium and phenol-containing wastewater. A completely separated partial nitritation and anammox (CSPN/A) process was developed to remove total nitrogen from high-strength phenol-containing wastewater. About 92% of COD, 100% of phenol, and 82.4% of total nitrogen were successfully removed at a NH4 +-N concentration of 200 mg L−1 with a phenol/NH4 +-N mass ratio of 0.5 in the CSPN/A process. Furthermore, a shock loading of 300 mg phenol L−1 with a phenol/NH4 +-N mass ratio of 1.5 led to a complete failure of partial nitritation, but the performance was rapidly recovered by the increase of NH4 +-N concentration. Although the activities of ammonium-oxidizing bacteria and anammox bacteria were severely inhibited at a phenol/NH4 +-N mass ratio of 1.5, the enrichment of efficient phenol degraders in the CSPN stage could strengthen the performance robustness of partial nitritation and anammox process. Therefore, this study presented a new insight on the feasibility of the anammox process for treating high-strength ammonium and phenol-containing wastewater.
AB - Anammox process is considered as a promising technology for removing total nitrogen from low-strength ammonium and phenol-containing wastewater. However, it is still a challenge for the anammox process to treat high-strength ammonium and phenol-containing wastewater. A completely separated partial nitritation and anammox (CSPN/A) process was developed to remove total nitrogen from high-strength phenol-containing wastewater. About 92% of COD, 100% of phenol, and 82.4% of total nitrogen were successfully removed at a NH4 +-N concentration of 200 mg L−1 with a phenol/NH4 +-N mass ratio of 0.5 in the CSPN/A process. Furthermore, a shock loading of 300 mg phenol L−1 with a phenol/NH4 +-N mass ratio of 1.5 led to a complete failure of partial nitritation, but the performance was rapidly recovered by the increase of NH4 +-N concentration. Although the activities of ammonium-oxidizing bacteria and anammox bacteria were severely inhibited at a phenol/NH4 +-N mass ratio of 1.5, the enrichment of efficient phenol degraders in the CSPN stage could strengthen the performance robustness of partial nitritation and anammox process. Therefore, this study presented a new insight on the feasibility of the anammox process for treating high-strength ammonium and phenol-containing wastewater.
KW - Ammonium-oxidizing bacteria
KW - Anammox process
KW - Partial nitritation
KW - Performance robustness
KW - Phenol
KW - Phenol degraders
UR - http://www.scopus.com/inward/record.url?scp=85049597872&partnerID=8YFLogxK
U2 - 10.1007/s11356-018-2701-z
DO - 10.1007/s11356-018-2701-z
M3 - Article
AN - SCOPUS:85049597872
SN - 0944-1344
VL - 26 (2019)
SP - 33917
EP - 33926
JO - Environmental Science and Pollution Research
JF - Environmental Science and Pollution Research
ER -