Partial Denitrification Coupled with Immobilization of Anammox in a Continuous Upflow Reactor

Overview

Journal RSC Adv

Publisher Royal Society of Chemistry

Specialty Chemistry

Date 2022 May 13

PMID 35547499

Authors

Weiqi Wang

Xiujie Wang

Siyu Wang

Jun Li

Affiliations

Soon will be listed here.

Abstract

Based on the stable operation of a continuous upflow reactor, immobilized anammox coupling with partial denitrification (DEAMOX), was successfully achieved after 94 days operation with a 63.5% accumulation rate of NO -N and a 98.4% removal rate of NO -N. Moreover, the findings show that the optimum range of COD/NO -N ratio for the coupling reaction was 2.3-2.7. The nitrogen removal performance of the coupling reactor decreased in response to the increase of pH value to 8.0 or 8.5, which was inconsistent with previously published results. Complete denitrification was successfully coupled with DEAMOX by adding polycaprolactone (PCL) as solid carbon source. As a result, the NO -N produced anaerobic ammonium oxidation could be completely removed; the removal rate of total nitrogen increased from 80.3% to 88.5%. In addition, a large number of denitrifying biofilms were attached to the surface of PCL particles.

Citing Articles

Immobilizing partial denitrification biomass and redox mediators to integrate with the anammox process for nitrogen removal.

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Dominance of in SBRs achieving partial denitrification: effects of sludge acclimating methods on microbial communities and nitrite accumulation.

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