کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4998035 | 1459922 | 2016 | 10 صفحه PDF | دانلود رایگان |
- A novel ANAMMOX-PD process was successful applied for advanced nitrogen removal.
- The effluent NO3â-N was below 20Â mg/L with NRE of 97.3% under influent TN of 840Â mg/L.
- Domestic wastewater was treated simultaneously with NRE of 96.7%.
- Partial denitrification was achieved stably with NTR approximately 80%.
- Microbial community in ANAMMOX reactor was analyzed via high-throughput sequencing.
In this study, a novel integrated anaerobic ammonium oxidization with partial denitrification process (termed as ANAMMOX-PD) was developed for advanced nitrogen removal from high-strength wastewater, which excess NO3â-N produced by ANAMMOX was fed into PD reactor for NO2â-N production and then refluxing to ANAMMOX reactor for further removal. Results showed that total nitrogen (TN) removal efficiency as high as 97.8% was achieved and effluent TN-N was below 20Â mg/L at influent TN-N of 820Â mg/L. Furthermore, the feasibility of simultaneously treating domestic wastewater was demonstrated in ANAMMOX-PD process, and NH4+-N removal efficiency of 96.7% was obtained. The nitrogen removal was mainly carried out through ANAMMOX pathway, and high-throughput sequencing revealed that Candidatus_Brocadia was the major ANAMMOX species. The presented process could effectively solve the problem of excess nitrate residual in ANAMMOX effluent, which hold a great potential in application of currently ANAMMOX treating high-strength wastewater (e.g. sludge digestion supernatant).
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Journal: Bioresource Technology - Volume 221, December 2016, Pages 37-46