Effective resin disinfection is mandatory to ensure the microbiological quality of water treated by domestic softeners. The wet and sometimes warm environment inside the softener is ideal for bacteria growth. Our research was focused on the evaluation of the microbial quality of water from softeners sanitized by chlorine solutions or by electrolytic systems. We employed the heterotrophic plate count and specific tests to monitor the presence of opportunistic and pathogenic bacteria (Pseudomonas aeruginosa, Escherichia coli, enterococci, and coliforms). Completely new devices were equipped with a commercially available electrolytic system or with a newly patented one or sanitized by automatic or manual addition of chlorine solutions. In all cases, the contamination was reduced, not completely avoided. In particular, the patented electrolytic system significantly reduced bacterial proliferation in strongly contaminated devices. Our data confirm the difficulties encountered to solve the problem of microbiological quality of softened water and offer encouraging information on new possible solutions

Luca Bolelli, E.N.F. (2020). The pursuit of good microbiological conditions in domestic softeners: a new improvement. JOURNAL OF WATER AND HEALTH, 18(2), 200-206 [10.2166/wh.2020.136].

The pursuit of good microbiological conditions in domestic softeners: a new improvement.

Luca Bolelli
Investigation
;
Elida Nora Ferri
Writing – Review & Editing
;
Stefano Sangiorgi
Investigation
;
2020

Abstract

Effective resin disinfection is mandatory to ensure the microbiological quality of water treated by domestic softeners. The wet and sometimes warm environment inside the softener is ideal for bacteria growth. Our research was focused on the evaluation of the microbial quality of water from softeners sanitized by chlorine solutions or by electrolytic systems. We employed the heterotrophic plate count and specific tests to monitor the presence of opportunistic and pathogenic bacteria (Pseudomonas aeruginosa, Escherichia coli, enterococci, and coliforms). Completely new devices were equipped with a commercially available electrolytic system or with a newly patented one or sanitized by automatic or manual addition of chlorine solutions. In all cases, the contamination was reduced, not completely avoided. In particular, the patented electrolytic system significantly reduced bacterial proliferation in strongly contaminated devices. Our data confirm the difficulties encountered to solve the problem of microbiological quality of softened water and offer encouraging information on new possible solutions
2020
Luca Bolelli, E.N.F. (2020). The pursuit of good microbiological conditions in domestic softeners: a new improvement. JOURNAL OF WATER AND HEALTH, 18(2), 200-206 [10.2166/wh.2020.136].
Luca Bolelli, Elida Nora Ferri, Stefano Sangiorgi, Giuseppe Novelli, Stefano Girotti
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/804742
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