Performance and recovery of a completely separated partial nitritation and anammox process treating phenol-containing wastewater
Autor: | Xuesong Ren, Zhenhu Hu, Wei Wang, Chao Pang, Julian D. Muñoz Sierra |
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Rok vydání: | 2018 |
Předmět: |
Nitrogen
Health Toxicology and Mutagenesis Wastewater 010501 environmental sciences Waste Disposal Fluid 01 natural sciences chemistry.chemical_compound Bioreactors Phenols Ammonium Compounds Environmental Chemistry Phenol Ammonium 0105 earth and related environmental sciences Bacteria General Medicine Pulp and paper industry Nitrification Pollution chemistry Anammox Scientific method Total nitrogen Oxidation-Reduction Water Pollutants Chemical |
Zdroj: | Environmental Science and Pollution Research. 26:33917-33926 |
ISSN: | 1614-7499 0944-1344 |
Popis: | 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. |
Databáze: | OpenAIRE |
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