<script type="text/javascript">
<!--
document.write('<div id="oa_widget"></div>');
document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=undefined&type=result"></script>');
-->
</script>

COPY SCRIPT

For further information contact us at helpdesk@openaire.eu

Towards energy positive wastewater treatment by sludge treatment using free nitrous acid

descriptionPublicationkeyboard_double_arrow_right Article , Journal 01 Feb 2016 Australia Publisher:Elsevier BVJournal:Chemosphere, volume 144, pages 1,869-1,873 (issn: 0045-6535,

Authors: Wang, Qilin; Hao, Xiaodi; Yuan, Zhiguo;

doi: 10.1016/j.chemosphere.2015.10.069

pmid: 26539712

Towards energy positive wastewater treatment by sludge treatment using free nitrous acid

- Summary
- Subjects
- Metrics

Abstract

Free nitrous acid (FNA i.e. HNO2) was revealed to be effective in enhancing biodegradability of secondary sludge. Also, nitrite-oxidizing bacteria were found to be more susceptible to FNA than ammonium-oxidizing bacteria. Based on these findings, a novel FNA-based sludge treatment technology is proposed to enhance energy recovery from wastewater/sludge. Energy analysis indicated that the FNA-based technology would make wastewater treatment become an energy generating process (yielding energy at 4 kWh/PE/y; kWh/PE/y: kilowatt hours per population equivalent per year), rather than being a large energy consumer that it is today (consuming energy at 24 kWh/PE/y). Importantly, FNA required for the sludge treatment could be produced as a by-product of wastewater treatment. This proposed FNA-based technology is economically and environmentally attractive, and can be easily implemented in any wastewater treatment plants. It only involves the installation of a simple sludge mixing tank. This article presents the concept of the FNA-based technology.

Country

Australia

Related Organizations

University of Queensland
Australia
Beijing University of Civil Engineering and Architecture
China (People's Republic of)
Beijing University of Civil Engineering and Architecture
China (People's Republic of)

Keywords

690, Energy-Generating Resources, Nitrite pathway, Nitrous Acid, Wastewater, Water Purification, Bioreactors, Sludge treatment, Nitrites, Free nitrous acid, Bacteria, Sewage, 1600 Chemistry, Energy recovery, Biodegradation, Environmental, 2304 Environmental Chemistry, Methane

Impact byBIP!

	citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	23
	popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.	Top 10%
	influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	Top 10%
	impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.	Top 10%