Abstract
The research studied microbial deterioration in household ultrafiltration membrane (UF) purifiers with residence time and anti-bacterial strategy with electrolysis. The pilot test was conducted on a household drinking water purifier. A 72-h stagnation test and a 60-min anti-bacterial test with electrolysis were subsequently done. There were some findings in this study: (1) The level of HPC exceeded the hygienic standard when the stagnation time was more than 3 h. (2) The lag phase of bacterial growth was no more than 12 h in filters. (3) With the method of electrolysis, microbial contamination induced by water stagnation can be controlled in the acceptable range, which was more efficient than the method of flushing with tap water.
Highlights
The presence of water purifiers has been very large in residents’ houses and in the public due to the pursue for high quality drinking water [1]
(3) With the method of electrolysis, microbial contamination induced by water stagnation can be controlled in the acceptable range, which was more efficient than the method of flushing with tap water
This paper studies the microbial contamination during 3-d stagnation time
Summary
The presence of water purifiers has been very large in residents’ houses and in the public due to the pursue for high quality drinking water [1]. UF was proposed by Ministry of Education of PRC for healthy concerns of adolescents house-hold purifiers generally run few minutes but stand by for hours or days. Water stagnation provide time for microbial communities to proliferate [2]. UF can prevent almost all bacteria, there are still bacteria exist in the outlets of UF due to leakage points on membrane. They act as microbial contamination sources to some extent [3, 4]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
