Record nummer 2172775
Titel artikel Energy efficient treatment of A-stage effluent: pilot-scale experiences with shortcut nitrogen removal
Auteur(s) Seuntjens, D. ; Bundervoet, B.L.M. ; Mollen, H. ; De Mulder, C. ; Wypkema, E. ; Verliefde, A. ; Nopens, I. ; Colsen, J.G.M. ; Vlaeminck, S.E.
Tijdschrifttitel Water science and technology : a journal of the International Association on Water Pollution Research
Deel(Jaar)Nummer 73(2016)9
Paginering 2150 - 2158
Online full text
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Trefwoorden (cab) afvalwaterbehandeling / granulering / stikstof / afvoerwater / slib
Rubrieken Afvalwaterbehandeling
Publicatie type Artikel
Taal Engels
Toelichting (Engels) Energy autarky of sewage treatment plants, while reaching chemical oxygen demand (COD) and N discharge limits, can be achieved by means of shortcut N-removal. This study presents the results of a shortcut N-removal pilot, located at the biological two-‘stage (high/low rate) wastewater treatment plant of Breda, The Netherlands. The pilot treated real effluent of a high-rate activated sludge (COD/N ¼ 3), fed in a continuous mode at realistic loading rates (90–100 g N/(m3·d)). The operational strategy, which included increased stress on the sludge settling velocity, showed development of a semi-granular sludge, with average particle size of 280 μm (ø4,3), resulting in increased suppression of nitrite-oxidizing bacteria. The process was able to remove part of the nitrogen (51 ±23%) over nitrite, with COD/N removal ratios of 3.2±0.9. The latter are lower than the current operation of the full-scale B-stage in Breda (6.8–9.4), showing promising results for carbon-efficient N-removal, while producing a well settling sludge (SVI30 <100 mL/g).
Betrokken instanties Waterschap Brabantse Delta
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