The Usage of Ultrasounds to Disintegrate Escherichia Coli Bacteria Contained in Treated Wastewater

Eliza Hawrylik

Abstract

Sewage and sewage sludge is a place of the occurrence of many microorganisms, including pathogenic and relatively pathogenic bacteria. They may reach other environments, e.g. receiver waters or soil, thus creating a biological threat. Theaimofthispaperwastostudy,inlaboratoryconditions,theeffectoflow-frequencyultrasoundonthedisintegrationof Escherichiacolibacteriapresentinpurifiedwastewater.E.colibacilliandultrapurewaterwereusedforthestudy.Thesamples were exposed to ultrasounds at 20 and 40 kHz for variable time of sonication and at two different modes of the ultrasoniccleaneroperation:continuousandpulsed.StudieshaveshownthatultrasoundhasaneffectiveimpactonE.colibacilli. Already the 3-minute interaction of ultrasounds at 20 kHz with the pulsation mode of impact of the device caused a decrease in the number of these bacteria by over 90%. The 20-minute operation of 40 kHz ultrasound waves resulted in a decrease in the amount of bacteria by nearly 70% compared to the control. The obtained results, therefore, indicate the possibility of using the disintegration process of low frequency ultrasounds for removing Escherichia coli bacteria present in treated wastewater
Author Eliza Hawrylik (FCEE / DCBB)
Eliza Hawrylik,,
- Department of Chemistry, Biology and Biotechnology
Journal seriesArchitecture Civil Engineering Environment, ISSN 1899-0142, (N/A 20 pkt)
Issue year2019
No3
Pages131-136
Publication size in sheets0.5
Keywords in EnglishDisintegration;Disinfection;Lowfrequencyultrasounds;Microorganisms;Treatedwastewater
DOIDOI:10.21307/ACEE-2019-043
URL http://www.acee-journal.pl/1,7,Issues.html
Internal identifierROC 19-20
Languageen angielski
LicenseJournal (articles only); published final; Other open licence; with publication
Score (nominal)20
Score sourcejournalList
ScoreMinisterial score = 20.0, 12-02-2020, ArticleFromJournal
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