A Novel Perspective on the Instability of Mainstream Partial Nitrification: The Niche Differentiation of Nitrifying Guilds DOI

Xiaochuan Ran,

Tong Wang, Mingda Zhou

et al.

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: April 28, 2025

Short-cut biological nitrogen removal (sBNR) favors the paradigm shift toward energy-positive and carbon-neutral wastewater treatment processes. Partial nitrification (PN) is a key approach to provide nitrite for anammox or denitritation during sBNR, its stability precondition achieving robust performance. However, maintaining stable mainstream PN process has been long-standing challenge. This review analyzes from microbial ecology perspective, focusing on niche differentiation among nitrifiers. First, we propose that systems are ecologically unstable, failure of due reactivation nitrite-oxidizing bacteria (NOB) can be regarded as behavior restore system stabilization. Thus, primarily relies enhancing between ammonia-oxidizing (AOB) NOB. We then summarize realized niches indigenous nitrifiers within discuss their ecophysiological characteristics (e.g., cell structure substrate affinity) define specific ecological niches. By comparing breadths AOB NOB various axes, further identify different responses (resistance) (resilience) exogenous perturbations. Finally, outlook through an lens. provides insights into instability process, which intended guide derivation optimized strategies single-factor integrated solutions.

Language: Английский

Research progress and prospect of low-carbon biological technology for nitrate removal in wastewater treatment DOI Creative Commons

Ru Zheng,

Kuo Zhang,

Lingrui Kong

et al.

Frontiers of Environmental Science & Engineering, Journal Year: 2024, Volume and Issue: 18(7)

Published: March 25, 2024

Abstract Wastewater treatment plants are the major energy consumers and significant sources of greenhouse gas emissions, among which biological nitrogen removal wastewater is an important contributor to carbon emissions. However, traditional heterotrophic denitrification still has problems excessive residual sludge requirement external sources. Consequently, development innovative low-carbon nitrate technologies necessary. This review outlines key roles sulfur autotrophic hydrogen in treatment. The discovered nitrate/nitrite dependent anaerobic methane oxidation enables sustainable emission reduction by utilizing available situ . Photosynthetic microorganisms exhibited a promising potential achieve carbon-negative removal. Specifically, algal-bacterial symbiosis system photogranules offer effective prospective options for Then, emerging technology photoelectrotrophic underlying photoelectron transfer mechanisms discussed. Finally, we summarize prospect these technologies, highlighting that solar-driven area future guiding significance design systems.

Language: Английский

Citations

9
Principles, Challenges, and optimization of Indigenous Microalgae-Bacteria consortium for sustainable swine wastewater treatment DOI
Sheng Yu,

Zhipeng Chen,

Mengting Li

et al.

Bioresource Technology, Journal Year: 2024, Volume and Issue: 406, P. 131055 - 131055

Published: June 27, 2024

Language: Английский

Citations

8
Red Light Enhanced Nitrogen Removal Efficiency by Bacterial-Algae Biofilm Reactor in Recirculating Aquaculture Systems DOI
Shumin Wang, Qingfeng Li,

qunxin huang

et al.

Published: Jan. 1, 2025

With the increasing application of Recirculating Aquaculture Systems (RAS) in modern aquaculture production, importance water quality management has gained significant attention. To investigate impact light wavelengths on nitrogen removal efficiency Bacteria-Algae Biofilm Reactor (BABR), four RAS were built. Each was exposed to different forms red (400–500 nm), blue (600-700 red-blue mixed (1:1 ratio), and white (400-700nm). The results indicated that significantly improved comparing light. When exposing light, as carbon-to-nitrogen ratio increased from 1:1 2:1, concentrations for ammonia nitrite reduced 1.17±0.25 mg/L 0.73±0.31 0.21±0.14 0.05±0.01 mg/L. Red up-regulated abundance genes related photosynthesis metabolism. This research provided a theoretical basis technical reference efficient by BABR.

Language: Английский

Citations

0
Inhibition under cold storage can accelerate the realization of stable partial nitrification DOI
Yihao Bian, Kunming Fu,

Teng Guan

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160025 - 160025

Published: Jan. 1, 2025

Language: Английский

Citations

0
A Novel Perspective on the Instability of Mainstream Partial Nitrification: The Niche Differentiation of Nitrifying Guilds DOI

Xiaochuan Ran,

Tong Wang, Mingda Zhou

et al.

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: April 28, 2025

Short-cut biological nitrogen removal (sBNR) favors the paradigm shift toward energy-positive and carbon-neutral wastewater treatment processes. Partial nitrification (PN) is a key approach to provide nitrite for anammox or denitritation during sBNR, its stability precondition achieving robust performance. However, maintaining stable mainstream PN process has been long-standing challenge. This review analyzes from microbial ecology perspective, focusing on niche differentiation among nitrifiers. First, we propose that systems are ecologically unstable, failure of due reactivation nitrite-oxidizing bacteria (NOB) can be regarded as behavior restore system stabilization. Thus, primarily relies enhancing between ammonia-oxidizing (AOB) NOB. We then summarize realized niches indigenous nitrifiers within discuss their ecophysiological characteristics (e.g., cell structure substrate affinity) define specific ecological niches. By comparing breadths AOB NOB various axes, further identify different responses (resistance) (resilience) exogenous perturbations. Finally, outlook through an lens. provides insights into instability process, which intended guide derivation optimized strategies single-factor integrated solutions.

Language: Английский

Citations

0