@misc{10481/82844,
year = {2023},
url = {https://hdl.handle.net/10481/82844},
abstract = {An experimental drinking water distribution system (DWDS) was used to evaluate
the evolution of particle size distribution (PSD) and basic quality parameters
of ultrafiltered water with or without pre-ozonation. An ultrafiltration
(UF) module was set up, associated with a pre-ozonation system (3.7 g O3/m3).
The permeate was circulated in the DWDS (300 m; 0.9 m/s) with 0.4 mg/L of
chlorine, and the analysis of the PSD was performed using a β-variable mathematical
model. A better control of membrane fouling was obtained with preozonation,
and PSD was necessary to observe water quality differences
between permeates and in the DWDS. A decrease in particle concentration of
1.8 logarithms was obtained with the application of UF membranes, while a
decrease of only 1.2 logarithms was obtained with pre-ozonation. The system
without pre-ozonation showed a higher efficiency at removing smaller particles
(around 2 μm), with the absence of particles larger than 23 μm during
both stages. The PSD revealed a worsening of water quality in the DWDS with
an increase of particles smaller than 5 μm during the application of UF membranes,
while with pre-ozonation, all particle sizes analyzed increased their
concentration.
Practitioner Points
• Pre-ozonation led to a better control of membrane fouling, but a worsening
of permeate quality according to particle size distribution.
• Pre-ozonation does not improve the turbidity, dissolved organic carbon or
UV254 removal capacity of ultrafiltration during drinking water treatment.
• Particles size distribution reveals the deterioration of water quality in a
drinking water distribution system better than turbidity or DOC.
• Ozone prior to ultrafiltration membranes led to a worsening of permeate
quality, more significant in the drinking water distribution system.},
organization = {Spanish Ministry of Science and
Innovation, Grant/Award Number:
CTM2010-18899-TECNO},
keywords = {Drinking water distribution system},
keywords = {Particle size distribution},
keywords = {Pre-ozonation},
keywords = {UF membranes},
title = {Analysis of the evolution of ultra-filtered water quality in a drinking water distribution system by particle size distribution: Influence of pre-ozonation},
doi = {10.1002/wer.10840},
author = {Álvarez Arroyo, Rocío and Pérez Pérez, Jorge Ignacio and Ruiz, Luz Marina and Gómez Nieto, Miguel Ángel},
}