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Alkaline disinfection of urban wastewater and landfill leachate by wood fly ash

Authors :
Tomislav Ivanković
Jasna Hrenović
Grigorios Itskos
Nikolaos Koukouzas
Davor Kovačević
Jelena Milenković
Source :
Arhiv za higijenu rada i toksikologiju, Volume 65, Issue 4
Publication Year :
2014
Publisher :
Institute for Medical Research and Occupational Health, 2014.

Abstract

Wood fly ash is an industrial by-product of the combustion of different wood materials and is mostly disposed of as waste on landfills. In our preliminary experiments, wood ash exhibited antibacterial activity against urban wastewater bacteria and we focused on wood fly ash as a potential substrate for wastewater disinfection. The addition of ash at a concentration of 10 g L-1 (1 %) caused an instant increase of pH in urban wastewater and landfill leachate. High pH (10.1–12.7) inactivated bacterial populations in the wastewater and the removal of faecal coliforms and intestinal enterococci after 6 h of contact was 100 % (below the detection limit<br />Leteći pepeo iz drvne industrije je nusproizvod koji nastaje spaljivanjem različitog drvnog materijala i većinom završi na odlagalištima otpada. Budući da je u preliminarnim ispitivanjima leteći pepeo pokazao antibakterijsko djelovanje prema bakterijama iz otpadne vode, pokusi su usmjereni istraživanju pepela kao potencijalnog supstrata za dezinfekciju otpadne vode. Dodatak pepela u koncentraciji od 10 g L-1 (1 %) uzrokovao je trenutno povećanje vrijednosti pH komunalne i procjedne otpadne vode s odlagališta otpada. Visoki pH (10,1–12,7) uništio je bakterije u otpadnoj vodi te je korištenjem najučinkovitijega pepela (dobivenog spaljivanjem bukve) postignuto 100-postotno uklanjanje (odnosno manje od mogućnosti detekcije

Details

Language :
English
ISSN :
18486312 and 00041254
Volume :
65
Issue :
4
Database :
OpenAIRE
Journal :
Arhiv za higijenu rada i toksikologiju
Accession number :
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