Enhanced purification efficacy of the microflocculation–ultrafiltration process for raw water quality from multiple sources during heavy rainfall DOI Creative Commons
T. Yao, Yi‐Chao Chen, Wenting Wu

et al.

Water quality research journal., Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 18, 2024

ABSTRACT In this study, we utilized direct ultrafiltration (UF) and integrated microflocculation–ultrafiltration (MF–UF) processes to treat raw water from four distinct sources, covering both dry heavy rainfall periods. We assessed the effectiveness of microflocculation (MF) as a pretreatment enhance treatment efficiency under complex conditions, focusing on its role in mitigating membrane fouling. The results demonstrated superior adaptability UF membranes when combined with MF pretreatment, particularly managing high turbidity during rainfall, challenge for standalone meeting regulatory standards. This approach notably improved UV254 removal approximately 60–80%. Additionally, excitation–emission matrix spectroscopy revealed that while MF–UF process is effective removing dissolved organic matter (DOM), it faces limitations DOM concentrations water. Comparative analysis flux between two methods showed reduces filtration time, enhances rates, significantly decreases Finally, scanning electron microscopy further provided insights into structure morphology surface filter cakes, illustrating how contributes sustained flux.

Language: Английский

Toward one-step As(III) removal in ultrafiltration with in situ BioMnOx cake layer: Mechanism and feasibility insights DOI
Kai Li, Yao Lu,

Chu Zhou

et al.

Water Research, Journal Year: 2025, Volume and Issue: 273, P. 123087 - 123087

Published: Jan. 1, 2025

Language: Английский

Citations

2
PVDF@CoFe2O4 nanoconfined catalytic membrane for natural surface water treatment: Efficient NOM degradation and membrane fouling mitigation DOI
Liping Qiu,

Fankun Meng,

Qi Qiu

et al.

Journal of Water Process Engineering, Journal Year: 2025, Volume and Issue: 70, P. 107005 - 107005

Published: Jan. 15, 2025

Language: Английский

Citations

1
Biofilm-Induced Critical Flux in Dead-End Ultrafiltration Processes: Phenomenon, Mechanism, and Economic and Environmental Benefits DOI

Keying Xiong,

Li Long, Jun Xing

et al.

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

Published: March 3, 2025

The concept of critical flux, introduced by R.W. Field, defines the flux below which filtration resistance remains constant over time. Notably, this concept, originally for cross-flow filtration, faces challenges in dead-end (the dominant mode used drinking water ultrafiltration (UF)). Herein, leveraged regulated membrane biofilms, we proposed a novel biofilm-induced specific to filtration. Below biofilm could act like maintain mass balances biodegradation foulants, thereby preventing continuous increase resistance. Additionally, demonstrated an optimized strategy improve flux─backwashing without air scouring, doubled from 6 12 L·m–2·h–1. A life cycle analysis revealed that operating at can reduce energy consumption and minimize cleaning, effectively lowering overall costs (52%) carbon emissions (61%) compared conventional UF. Sensitivity also indicated extending reducing were crucial costs, while minimizing fossil usage was decisive emissions. Overall, our study demonstrates offers low-maintenance, cost-effective, environmentally sustainable

Language: Английский

Citations

1
Unveiling the role of cake layer in coagulation-ultrafiltration on membrane fouling and emerging application as dynamic membrane before ultrafiltration DOI
Yatao Liu,

Zhenbei Wang,

Mingyao Xu

et al.

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 350, P. 127932 - 127932

Published: May 11, 2024

Language: Английский

Citations

8
Low-temperature DC argon plasma treatment of polysulfone membranes to enhance antifouling properties in oil-water emulsion separation DOI

Ankit Rawal,

Tonmoi Hazarika, B. Kakati

et al.

Surfaces and Interfaces, Journal Year: 2025, Volume and Issue: unknown, P. 106406 - 106406

Published: April 1, 2025

Language: Английский

Citations

0
Interactions and Integrated Optimization between Secondary Water Supply Devices and Drinking Water Distribution Systems: a Review DOI
Yue Cao, Ying Zhang, Yifan Zhao

et al.

Water Resources Management, Journal Year: 2025, Volume and Issue: unknown

Published: April 11, 2025

Language: Английский

Citations

0
Presence of iron oxide particles can reduce the cake fouling in UF systems DOI

Q Ye,

Chu Zhou,

Jiangshuai Hu

et al.

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 342, P. 127015 - 127015

Published: March 5, 2024

Language: Английский

Citations

3
Structural analysis and optimization of gravity-driven membrane (GDM) for water treatment using computational fluid dynamics (CFD) with open slot implementation DOI Creative Commons
Jonghun Lee,

Sounghyun Nam,

Hojung Rho

et al.

Desalination and Water Treatment, Journal Year: 2024, Volume and Issue: 317, P. 100296 - 100296

Published: Jan. 1, 2024

Appropriate cleaning methods are essential to ensure the continuous use of membranes, however, research on suitable for Gravity-driven membrane (GDMs) remains insufficient. To remove contaminants accumulated surface GDM modules, open slot and non-slot modules were designed manufactured. These compared their filtration performance contaminant removal efficiency through computational fluid dynamics simulations experiments using influent from wastewater treatment plants (WWTP). While flow velocity in housing module is slower than that module, 0.17 m/s can effectively sludge near beginning area, thereby reducing dead zone. Evaluation both WWTPs revealed flushing effects occurred initial 100 L filtration, but thereafter, observed only module. Therefore, an introducing a structure lead significant modules. maintain permeate flux continuously, it deemed necessary accompany appropriate open-slot clean-in-place chemical cleaning.

Language: Английский

Citations

0
Comprehensive Control of Water Quality Deterioration in Building Water Supply Systems: A Review on Configuration, Purification and Regulation DOI Open Access
Na Li, Yongwang Liu, Xing Li

et al.

Water, Journal Year: 2024, Volume and Issue: 16(21), P. 3132 - 3132

Published: Nov. 1, 2024

The overall goal of urban water supply is to ensure the quality from source tap. As “last mile”, building system (BWSS) crucial part in ensuring tap safety, and its deteriorating has attracted increasing attention. In this work, we provide a comprehensive overview pollution, configuration, purification regulation BWSSs, with focus on safety. Periodic usage buildings unique feature that leads intermittent stagnation reduced residual chlorine. Biological pollution become key existing studies due acute effects human health, compared chronic chemical pollution. For new systems, risks can be at by optimizing pipe materials reasonable layout. It recommended introduce secondary disinfection technologies, as they are important for biosecurity. Moreover, supervision maintenance basis long-term efficient operation BWSSs. This review constructs framework controlling deterioration based wholse process, which instructive design, operation, management provides relatively clear research directions improving quality.

Language: Английский

Citations

0
Enhanced purification efficacy of the microflocculation–ultrafiltration process for raw water quality from multiple sources during heavy rainfall DOI Creative Commons
T. Yao, Yi‐Chao Chen, Wenting Wu

et al.

Water quality research journal., Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 18, 2024

ABSTRACT In this study, we utilized direct ultrafiltration (UF) and integrated microflocculation–ultrafiltration (MF–UF) processes to treat raw water from four distinct sources, covering both dry heavy rainfall periods. We assessed the effectiveness of microflocculation (MF) as a pretreatment enhance treatment efficiency under complex conditions, focusing on its role in mitigating membrane fouling. The results demonstrated superior adaptability UF membranes when combined with MF pretreatment, particularly managing high turbidity during rainfall, challenge for standalone meeting regulatory standards. This approach notably improved UV254 removal approximately 60–80%. Additionally, excitation–emission matrix spectroscopy revealed that while MF–UF process is effective removing dissolved organic matter (DOM), it faces limitations DOM concentrations water. Comparative analysis flux between two methods showed reduces filtration time, enhances rates, significantly decreases Finally, scanning electron microscopy further provided insights into structure morphology surface filter cakes, illustrating how contributes sustained flux.

Language: Английский

Citations

0