High-throughput nitritation of reject water with a novel ammonium control loop: Stable effluent generation for anammox or heterotrophic denitritation
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چکیده
منابع مشابه
Optimization of a mainstream nitritation-denitritation process and anammox polishing.
This paper deals with an almost 1-year long pilot study of a nitritation-denitritation process that was followed by anammox polishing. The pilot plant treated real municipal wastewater at ambient temperatures. The effluent of high-rate activated sludge process (hydraulic retention time, HRT=30 min, solids retention time=0.25 d) was fed to the pilot plant described in this paper, where a constan...
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A modified ASM1 model was developed to simulate nitritation/denitritation in a sequencing batch reactor (SBR) treating sludge reject water. The model was validated using real data from a pilot SBR. The effect of a number of operating parameters on the nitritation/denitritation efficiency was tested including, among others, the volumetric nitrogen loading rate (vNLR), the solids retention time (...
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Partial nitritation/anammox (PANAM) technologies have rapidly developed over the last decade, but still considerable amounts of energy are required for active aeration. In this study, a non-aerated two-stage PANAM process was investigated. In the first-stage upflow fixed-film bioreactor, nitratation could not be prevented at ammonium loading rates up to 186 mg N l(-1) d(-1) and low influent dis...
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A novel biological nitrogen removal system based on nitritation coupled with thiosulfate-driven denitritation (Nitritation-TDD) was developed to achieve a high nitrogen removal rate and low sludge production. A nitritation sequential batch reactor (nitritation SBR) and an anoxic up-flow sludge bed (AnUSB) reactor were applied for effective nitritation and denitritation, respectively. Above 75% ...
متن کاملMainstream partial nitritation and anammox: long-term process stability and effluent quality at low temperatures
The implementation of autotrophic anaerobic ammonium oxidation processes for the removal of nitrogen from municipal wastewater (known as "mainstream anammox") bears the potential to bring wastewater treatment plants close to energy autarky. The aim of the present work was to assess the long-term stability of partial nitritation/anammox (PN/A) processes operating at low temperatures and their re...
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ژورنال
عنوان ژورنال: Chemical Engineering Journal
سال: 2014
ISSN: 1385-8947
DOI: 10.1016/j.cej.2013.11.056