Format

Send to

Choose Destination
See comment in PubMed Commons below
Bioresour Technol. 2013 Jan;127:223-30. doi: 10.1016/j.biortech.2012.09.102. Epub 2012 Oct 5.

Application of microwave radiation to biofilm heating during wastewater treatment in trickling filters.

Author information

1
Department of Environmental Engineering, University of Warmia and Mazury in Olsztyn, Warszawska 117, 10-709 Olsztyn, Poland. marcin.zielinski@uwm.edu.pl

Abstract

The purpose of this study was to demonstrate the potential for improving wastewater treatment by the application of microwave radiation (MW) compared to convective heating (CH) of trickling filters. Microwaves were delivered to the biofilm in a continuous and intermittent way to obtain temperatures of 20, 25, 35 and 40 °C. Although there was no effect of MW on organic removal, the observed yield coefficient was lower during the continuous MW supply compared to the periodic dosage and CH. The presence of organic compounds in the influent and continuous biofilm exposure to MW resulted in ca. 10% higher efficiency and ca. 20% higher rate of nitrification compared to intermittent MW dosage and CH. Independent of the method of reactor heating, the absence of organic carbon in the influent induced a significant increase in ammonium oxidation efficiency at 20-35 °C. Despite the aerobic conditions in trickling filters, nitrogen loss was observed.

PMID:
23131645
DOI:
10.1016/j.biortech.2012.09.102
[Indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science
    Loading ...
    Support Center