Since the 1990s, research on using the anaerobic ammonium oxidation (Anammox) technique to remove nitrogen from wastewater has been advancing quickly. Nitrite (NO2—N), acceptor of electron for anammox bacteria, must be present in the wastewater in order for the anammox procedure to be used widely. To achieve the optimum concentration of NO2—N and the potential for integration with anaerobic treatment processes, partial nitrification (P/N) is a critical step. Continuous aeration (Plan 1), nitrite dosing (Plan 2), and Anoxic intermittent aeration (Plan 3) modes were the three alternative techniques that were assessed. In Plan 1, Using synthetic feed, the P/N process’ starting was accomplished. (NH4 +-N concentration: 50 mg/L) to enrich 30 days of ammonium oxidising bacteria (AOB) with low dissolved oxygen (DO) of 0.1-1.0 mg/L. This was followed by the replacement of the synthetic feed with UASB (Up Flow Anaerobic sludge blanket) effluent (NH4+-N-50-65 mg/L; COD: 60–80 mg/L and NO3−N: 0–5 mg/L). As 100% nitrification was shown, strategy 1 was dominated by nitrite oxidising bacteria (NOB) activity. The study also explored the viability of nitrite dosage 30mg/L for 15d without feeding into the reactor with regular mixing in order to obtain the P/N. As the days went on, strategy 2’s granular sludge started to break down, which inhibited AOB and NOB activity. In order to enrich the AOB bacteria, the reactor was further run using strategy 3 feeding. The findings of this study show that the optimum choice for quickly inhibiting NOB bacteria in the seed sludge is a combination of strategies 1 and 2. This work suggests a perfect method for a rapid P/N startup with low DO concentration, producing enough NO2 to meet the necessary N concentration for the anammox process.
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27 July 2023
2ND INTERNATIONAL CONFERENCE ON FUTURISTIC AND SUSTAINABLE ASPECTS IN ENGINEERING AND TECHNOLOGY: FSAET-2021
24–26 December 2021
Mathura, India
Research Article|
July 27 2023
Performance of SBR with anaerobic effluent to accumulate nitrite for further integration with UASB anammox reactor
Mohammad Waqqas Mirza;
Mohammad Waqqas Mirza
a)
1
Dept. of Civil engineering, Jamia Millia Islamia
, New Delhi-110025 India
a)Corresponding author: mirza.waqqas4@gmail.com
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Bushra Hasan;
Bushra Hasan
1
Dept. of Civil engineering, Jamia Millia Islamia
, New Delhi-110025 India
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Mirat Ahmad;
Mirat Ahmad
1
Dept. of Civil engineering, Jamia Millia Islamia
, New Delhi-110025 India
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Mohd Rayaz;
Mohd Rayaz
1
Dept. of Civil engineering, Jamia Millia Islamia
, New Delhi-110025 India
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Abid Ali Khan;
Abid Ali Khan
1
Dept. of Civil engineering, Jamia Millia Islamia
, New Delhi-110025 India
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Syed Shakil Afsar
Syed Shakil Afsar
1
Dept. of Civil engineering, Jamia Millia Islamia
, New Delhi-110025 India
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a)Corresponding author: mirza.waqqas4@gmail.com
AIP Conf. Proc. 2721, 020019 (2023)
Citation
Mohammad Waqqas Mirza, Bushra Hasan, Mirat Ahmad, Mohd Rayaz, Abid Ali Khan, Syed Shakil Afsar; Performance of SBR with anaerobic effluent to accumulate nitrite for further integration with UASB anammox reactor. AIP Conf. Proc. 27 July 2023; 2721 (1): 020019. https://doi.org/10.1063/5.0154256
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