MODELLING ACCUMULATION OF SUSPENDED PARTICLES IN WATER DISTRIBUTION SYSTEM AND ITS CONTROL STRATEGIES

2019 ◽  
Vol 75 (7) ◽  
pp. III_53-III_63
Author(s):  
Tomohiro NAKANISHI ◽  
Josui KISHIMOTO ◽  
Koji KOSAKA ◽  
Sadahiko ITOH
Keyword(s):  
Distribution System ◽  
Water Distribution ◽  
Water Distribution System ◽  
Control Strategies ◽  
Suspended Particles

scholarly journals Waterborne microorganisms and biofilms related to hospital infections: strategies for prevention and control in healthcare facilities

2015 ◽  
Vol 14 (1) ◽  
pp. 52-67 ◽  
Author(s):  
Raquel Vannucci Capelletti ◽  
Ângela Maria Moraes
Keyword(s):  
Nosocomial Infections ◽  
Distribution System ◽  
Prevention And Control ◽  
Water Distribution ◽  
Water Distribution System ◽  
Control Strategies ◽  
Hospital Infections ◽  
Healthcare Facilities ◽  
Microbiological Control ◽  
And Control

Water is the main stimulus for the development of microorganisms, and its flow has an important role in the spreading of contaminants. In hospitals, the water distribution system requires special attention since it can be a source of pathogens, including those in the form of biofilms often correlated with resistance of microorganisms to various treatments. In this paper, information relevant to cases of nosocomial infections involving water circuits as a source of contaminants is compiled, with emphasis on the importance of microbiological control strategies to prevent the installation, spreading and growth of microorganisms in hospitals. An overview of the worldwide situation is provided, with emphasis on Brazilian hospitals. Different approaches normally used to control the occurrence of nosocomial infections due to waterborne contaminants are analyzed, and the use of the polysaccharide chitosan for this specific application is briefly discussed.

Effect of Ageing of Pipe and Lining Materials on Elemental Composition of Suspended Particles in a Water Distribution System

2014 ◽  
Vol 28 (6) ◽  
pp. 1645-1653 ◽  
Author(s):  
Masafumi Fujita ◽  
Yoshiyuki Ishiwatari ◽  
Iori Mishima ◽  
Norihiko Utsuno ◽  
Takeshi Kato
Keyword(s):  
Elemental Composition ◽  
Distribution System ◽  
Water Distribution ◽  
Water Distribution System ◽  
Suspended Particles

Assessment of Lisbon drinking water distribution network biofilm colonization and associated hazards

2008 ◽  
Vol 8 (4) ◽  
pp. 421-426
Author(s):  
J. Menaia ◽  
M. Benoliel ◽  
A. Lopes ◽  
C. Neto ◽  
E. Ferreira ◽  
...  
Keyword(s):  
Drinking Water ◽  
Distribution System ◽  
Water Distribution ◽  
Water Distribution System ◽  
Water Distribution Network ◽  
Storage Tanks ◽  
Water Pipe ◽  
Cultural Methods ◽  
Drinking Water Distribution ◽  
And Storage

Concerns arise from the possible occurrence of pathogens in drinking water pipe biofilms and storage tank sediments. In these studies, biofilm samples from pipes and sediments from storage tanks of the Lisbon drinking water distribution system were analyzed. Protein determinations and heterotrophic counts on pipe biofilm samples were used to assess the Lisbon network sessile colonization intensity and distribution. Indicator and pathogenic microorganisms were analyzed in pipe biofilm samples, as well as in storage tanks biofilm and sediments, by using cultural methods and PCR, to assess risks. Results have shown that the Lisbon network sessile colonization is relatively weak in intensity. In addition, no meaningful hazards were apparent for both the network biofilm and the storage tanks biofilm and sediments.

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