Pilot scale studies on nitritation-anammox process for mainstream wastewater at low temperature
| Autor: | Jozef Trela, Elzbieta Plaza, Karol Trojanowicz |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
0106 biological sciences
Environmental Engineering Hydraulic retention time chemistry.chemical_element Pilot Projects Wastewater 010501 environmental sciences 01 natural sciences Water Purification chemistry.chemical_compound Bioreactors 010608 biotechnology Ammonium Compounds Anaerobiosis Nitrite Nitrites 0105 earth and related environmental sciences Water Science and Technology Bacteria Sewage Moving bed biofilm reactor Environmental engineering Nitrogen Cold Temperature Biodegradation Environmental Activated sludge chemistry Anammox Aeration |
| Zdroj: | Water Science and Technology. 73:761-768 |
| ISSN: | 1996-9732 0273-1223 |
| DOI: | 10.2166/wst.2015.551 |
| Popis: | Process of partial nitritation-anammox for mainstream wastewater at low temperature was run in a pilot scale moving bed biofilm reactor (MBBR) system for about 300 days. The biofilm history in the reactor was about 3 years of growth at low temperature (down to 10 °C). The goal of the studies presented in this paper was to achieve effective partial nitritation-anammox process. Influence of nitrogen loading rate, hydraulic retention time, aeration strategy (continuous versus intermittent) and sludge recirculation (integrated fixed-film activated sludge (IFAS) mode) on deammonification process' efficiency and microbial activity in the examined system was tested. It was found that the sole intermittent aeration strategy is not a sufficient method for successful suppression of nitrite oxidizing bacteria in MBBR. The best performance of the process was achieved in IFAS mode. The highest recorded capacity of ammonia oxidizing bacteria and anammox bacteria in biofilm was 1.4 gN/m2d and 0.5 gN/m2d, respectively, reaching 51% in nitrogen removal efficiency. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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