Cargando…

The Feasibility of Maintaining Biological Phosphorus Removal in A-Stage via the Short Sludge Retention Time Approach: System Performance, Functional Genus Abundance, and Methanogenic Potential

The increasing concerns on resource and energy recovery call for the modification of the current wastewater treatment strategy. This study synthetically evaluates the feasibility of the short sludge retention time approach to improve the energy recovery potential, but keeping steady biological phosp...

Descripción completa

Detalles Bibliográficos
Autores principales: Luo, Haichao, Guo, Wanqian, Xing, Chuanming, Yan, Bo, Zhao, Qi, Ren, Nanqi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9099736/
https://www.ncbi.nlm.nih.gov/pubmed/35564888
http://dx.doi.org/10.3390/ijerph19095494
_version_ 1784706680214257664
author Luo, Haichao
Guo, Wanqian
Xing, Chuanming
Yan, Bo
Zhao, Qi
Ren, Nanqi
author_facet Luo, Haichao
Guo, Wanqian
Xing, Chuanming
Yan, Bo
Zhao, Qi
Ren, Nanqi
author_sort Luo, Haichao
collection PubMed
description The increasing concerns on resource and energy recovery call for the modification of the current wastewater treatment strategy. This study synthetically evaluates the feasibility of the short sludge retention time approach to improve the energy recovery potential, but keeping steady biological phosphorus removal and system stability simultaneously. SBR(S-SRT) and SBR(control) that simulated the short sludge retention time and conventional biological phosphorus removal processes, respectively, were set up to treat real domestic sewage for 120 d. SBR(S-SRT) achieved an efficient COD (91.5 ± 3.5%), [Formula: see text]-P (95.4 ± 3.8%), and TP (93.5 ± 3.7%) removal and maintained the settling volume index around 50 mL/gSS when the sludge retention time was 3 d, indicating steady operational stability. The poor ammonia removal performance (15.7 ± 7.7%) and a few sequences detected in samples collected in SBR(S-SRT) indicated the washout of nitrifiers. The dominant phosphorus accumulating organisms Tetrasphaera and Hydrogenophaga, which were enriched with the shortened sludge retention time, was in line with the excellent phosphorus performance of SBR(S-SRT). The calculated methanogenic efficiency of SBR(S-SRT) increased significantly, which was in line with the higher sludge yield. This study proved that the short sludge retention time is a promising and practical approach to integrate biological phosphorus removal in A-stage when re-engineering a biological nutrient removal process.
format Online
Article
Text
id pubmed-9099736
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-90997362022-05-14 The Feasibility of Maintaining Biological Phosphorus Removal in A-Stage via the Short Sludge Retention Time Approach: System Performance, Functional Genus Abundance, and Methanogenic Potential Luo, Haichao Guo, Wanqian Xing, Chuanming Yan, Bo Zhao, Qi Ren, Nanqi Int J Environ Res Public Health Article The increasing concerns on resource and energy recovery call for the modification of the current wastewater treatment strategy. This study synthetically evaluates the feasibility of the short sludge retention time approach to improve the energy recovery potential, but keeping steady biological phosphorus removal and system stability simultaneously. SBR(S-SRT) and SBR(control) that simulated the short sludge retention time and conventional biological phosphorus removal processes, respectively, were set up to treat real domestic sewage for 120 d. SBR(S-SRT) achieved an efficient COD (91.5 ± 3.5%), [Formula: see text]-P (95.4 ± 3.8%), and TP (93.5 ± 3.7%) removal and maintained the settling volume index around 50 mL/gSS when the sludge retention time was 3 d, indicating steady operational stability. The poor ammonia removal performance (15.7 ± 7.7%) and a few sequences detected in samples collected in SBR(S-SRT) indicated the washout of nitrifiers. The dominant phosphorus accumulating organisms Tetrasphaera and Hydrogenophaga, which were enriched with the shortened sludge retention time, was in line with the excellent phosphorus performance of SBR(S-SRT). The calculated methanogenic efficiency of SBR(S-SRT) increased significantly, which was in line with the higher sludge yield. This study proved that the short sludge retention time is a promising and practical approach to integrate biological phosphorus removal in A-stage when re-engineering a biological nutrient removal process. MDPI 2022-05-01 /pmc/articles/PMC9099736/ /pubmed/35564888 http://dx.doi.org/10.3390/ijerph19095494 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Luo, Haichao
Guo, Wanqian
Xing, Chuanming
Yan, Bo
Zhao, Qi
Ren, Nanqi
The Feasibility of Maintaining Biological Phosphorus Removal in A-Stage via the Short Sludge Retention Time Approach: System Performance, Functional Genus Abundance, and Methanogenic Potential
title The Feasibility of Maintaining Biological Phosphorus Removal in A-Stage via the Short Sludge Retention Time Approach: System Performance, Functional Genus Abundance, and Methanogenic Potential
title_full The Feasibility of Maintaining Biological Phosphorus Removal in A-Stage via the Short Sludge Retention Time Approach: System Performance, Functional Genus Abundance, and Methanogenic Potential
title_fullStr The Feasibility of Maintaining Biological Phosphorus Removal in A-Stage via the Short Sludge Retention Time Approach: System Performance, Functional Genus Abundance, and Methanogenic Potential
title_full_unstemmed The Feasibility of Maintaining Biological Phosphorus Removal in A-Stage via the Short Sludge Retention Time Approach: System Performance, Functional Genus Abundance, and Methanogenic Potential
title_short The Feasibility of Maintaining Biological Phosphorus Removal in A-Stage via the Short Sludge Retention Time Approach: System Performance, Functional Genus Abundance, and Methanogenic Potential
title_sort feasibility of maintaining biological phosphorus removal in a-stage via the short sludge retention time approach: system performance, functional genus abundance, and methanogenic potential
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9099736/
https://www.ncbi.nlm.nih.gov/pubmed/35564888
http://dx.doi.org/10.3390/ijerph19095494
work_keys_str_mv AT luohaichao thefeasibilityofmaintainingbiologicalphosphorusremovalinastageviatheshortsludgeretentiontimeapproachsystemperformancefunctionalgenusabundanceandmethanogenicpotential
AT guowanqian thefeasibilityofmaintainingbiologicalphosphorusremovalinastageviatheshortsludgeretentiontimeapproachsystemperformancefunctionalgenusabundanceandmethanogenicpotential
AT xingchuanming thefeasibilityofmaintainingbiologicalphosphorusremovalinastageviatheshortsludgeretentiontimeapproachsystemperformancefunctionalgenusabundanceandmethanogenicpotential
AT yanbo thefeasibilityofmaintainingbiologicalphosphorusremovalinastageviatheshortsludgeretentiontimeapproachsystemperformancefunctionalgenusabundanceandmethanogenicpotential
AT zhaoqi thefeasibilityofmaintainingbiologicalphosphorusremovalinastageviatheshortsludgeretentiontimeapproachsystemperformancefunctionalgenusabundanceandmethanogenicpotential
AT rennanqi thefeasibilityofmaintainingbiologicalphosphorusremovalinastageviatheshortsludgeretentiontimeapproachsystemperformancefunctionalgenusabundanceandmethanogenicpotential
AT luohaichao feasibilityofmaintainingbiologicalphosphorusremovalinastageviatheshortsludgeretentiontimeapproachsystemperformancefunctionalgenusabundanceandmethanogenicpotential
AT guowanqian feasibilityofmaintainingbiologicalphosphorusremovalinastageviatheshortsludgeretentiontimeapproachsystemperformancefunctionalgenusabundanceandmethanogenicpotential
AT xingchuanming feasibilityofmaintainingbiologicalphosphorusremovalinastageviatheshortsludgeretentiontimeapproachsystemperformancefunctionalgenusabundanceandmethanogenicpotential
AT yanbo feasibilityofmaintainingbiologicalphosphorusremovalinastageviatheshortsludgeretentiontimeapproachsystemperformancefunctionalgenusabundanceandmethanogenicpotential
AT zhaoqi feasibilityofmaintainingbiologicalphosphorusremovalinastageviatheshortsludgeretentiontimeapproachsystemperformancefunctionalgenusabundanceandmethanogenicpotential
AT rennanqi feasibilityofmaintainingbiologicalphosphorusremovalinastageviatheshortsludgeretentiontimeapproachsystemperformancefunctionalgenusabundanceandmethanogenicpotential