Effect of Sulphide on Enhanced Biological Phosphorus Removal IHE Delft PhD Thesis Series
Auteur : Rubio Rincon Francisco
The enhanced biological removal of phosphorus (EBPR) is a popular process due to high removal efficiency, low operational costs, and the possibility of phosphorus recovery. Nevertheless, the stability of the EBPR depends on different factors such as: temperature, pH, and the presence of toxic compounds. While extensive studies have researched the effects of temperature and pH on EBPR systems, little is known about the effects of different toxic compounds on EBPR. For example, sulphide has shown to inhibit different microbial activities in the WWTP, but the knowledge about its effects on EBPR is limited. Whereas the sulphide generated in the sewage can cause a shock effect on EBPR, the continuously exposure to sulphide potentially generated in WWTP can cause the acclimatization and adaptation of the biomass.
This research suggests that sulphate reducing bacteria can proliferate in WWTP, as they are reversibly inhibited by the recirculation of sludge through anaerobic-anoxic-oxic conditions. The research enhances the understanding of the effect of sulphide on the anaerobic-oxic metabolism of PAO. It suggests that the filamentous bacteria Thiothrix caldifontis could play an important role in the biological removal of phosphorus. It questions the ability of PAO to generate energy from nitrate respiration and its use for the anoxic phosphorus uptake. Thus, the results obtained in this research can be used to understand the stability of the EBPR process under anaerobic-anoxic-oxic conditions, especially when exposed to the presence of sulphide.
Introduction
Effect of electron acceptors on sulphate reduction activity at WWTP
Sulphide effects on the physiology of Candidatus Accumulibacter phosphatis Type I
Long-term effects of sulphide on the enhanced biological removal of phosphorus: The symbiotic role of Thiothrix caldifontis
Cooperation between Competibacter sp. and Accumulibacter in denitrification and phosphate removal processes
Absent anoxic activity of PAO I on nitrate under different long-term operational conditions
Outlook and main conclusions
References
Francisco Rubio was born in 1986 in Durango, México. With a background in civil engineering, Francisco gained work experience in different companies and projects throughout México and abroad. He decided to obtain further education in the field of Waste Water treatment and started his MSc in Municipal Water and Infrastructure, specialization Sanitary Engineering at UNESCO-IHE in October 2011, where he graduated with distinction in April 2013. His research focus was on the recovery of nitrogen and phosphorous (as Struvite) from waste streams, using affordable sources of magnesium such as Seawater.
Date de parution : 09-2018
17x24 cm
Disponible chez l'éditeur (délai d'approvisionnement : 14 jours).
Prix indicatif 184,47 €
Ajouter au panierDate de parution : 03-2017
17.4x24.6 cm
Disponible chez l'éditeur (délai d'approvisionnement : 14 jours).
Prix indicatif 96,92 €
Ajouter au panierThèmes d’Effect of Sulphide on Enhanced Biological Phosphorus Removal :
Mots-clés :
EBPR System; autotrophic phosphorus removal; Denitrification Enzymatic Activity; poly- sulphur- poly phosphate; EBPR Process; sulphate reducing bacteria; EBPR Performance; anoxic dephosphatation; BLASTn Analysis; DPAO; Phosphate Uptake Rate; 16S rRNA Amplicon Sequencing; EBPR; Anoxic Phosphorus Uptake; VFA Consumption; SRB; Anaerobic Phosphorus Release; SRB Community; SRT; Sulphate Reduction Activity; Candidatus Accumulibacter; Aerobic Phase; Polyphosphate Accumulating Organisms; Anoxic Phase; Sulphate Reduction; Acetate Consumption; Mathematical Expressions; Sulphide Concentrations; Phosphorus Uptake Rate; Periplasmic Nitrate Reductase