Applicability of one-stage partial nitritation and anammox in MBBR for anaerobically pre-treated municipal wastewater
Jazyk angličtina Země Německo Médium print-electronic
Typ dokumentu časopisecké články
PubMed
27074838
DOI
10.1007/s10295-016-1766-2
PII: 10.1007/s10295-016-1766-2
Knihovny.cz E-zdroje
- Klíčová slova
- Anammox in biofilm, Low strength wastewater, MBBR, Nitrogen removal, Partial nitritation,
- MeSH
- amoniové sloučeniny chemie MeSH
- anaerobióza MeSH
- biofilmy MeSH
- bioreaktory MeSH
- čištění vody MeSH
- dusík chemie MeSH
- hybridizace in situ fluorescenční MeSH
- kyslík chemie MeSH
- nízká teplota MeSH
- odpad tekutý - odstraňování metody MeSH
- odpadní voda chemie MeSH
- teoretické modely MeSH
- Publikační typ
- časopisecké články MeSH
- Názvy látek
- amoniové sloučeniny MeSH
- dusík MeSH
- kyslík MeSH
- odpadní voda MeSH
Energy consumption of municipal wastewater treatment plants can be reduced by the anaerobic pre-treatment of the main wastewater stream. After this pre-treatment, nitrogen can potentially be removed by partial nitritation and anammox (PN/A). Currently, the application of PN/A is limited to nitrogen-rich streams (>500 mg L(-1)) and temperatures 25-35 °C. But, anaerobically pretreated municipal wastewater is characterized by much lower nitrogen concentrations (20-100 mg L(-1)) and lower temperatures (10-25 °C). We operated PN/A under similar conditions: total ammonium nitrogen concentration 50 mg L(-1) and lab temperature (22 °C). PN/A was operated for 342 days in a 4 L moving bed biofilm reactor (MBBR). At 0.4 mg O2 L(-1), nitrogen removal rate 33 g N m(-3) day(-1) and 80 % total nitrogen removal efficiency was achieved. The capacity of the reactor was limited by low AOB activity. We observed significant anammox activity (40 g N m(-3) day(-1)) even at 12 °C, improving the applicability of PN/A for municipal wastewater treatment.
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