Determination of the Relationship between the Energy Content of Municipal Wastewater and Its Chemical Oxygen Demand

Dai, Ziye, Heidrich, Elizabeth S., Dolfing, Jan and Jarvis, Adam P. (2019) Determination of the Relationship between the Energy Content of Municipal Wastewater and Its Chemical Oxygen Demand. Environmental Science & Technology Letters, 6 (7). pp. 396-400. ISSN 2328-8930

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Official URL: https://doi.org/10.1021/acs.estlett.9b00253

Abstract

Quantitatively evaluating progress toward energy neutral, or even energy positive, wastewater treatment necessitates reliable data on the intrinsic energy content of the wastewater. It has long been assumed that the amount of energy in wastewater is directly related to its chemical oxygen demand (COD), but the convoluted method for measuring the wastewater energy content has meant that a reliable, statistically robust relationship between COD and energy has never been drawn. In this research, we used a new drying method and analyzed a set of 107 municipal wastewater samples, with a range of COD values from 16.4 to 1151 mg/L. The results revealed a strong correlation between COD and energy content of 16.1 kJ/g of COD (p < 0.001). Reliable predictions of a wastewater’s energy content can now be made on the basis of the COD measurement alone.

Item Type: Article
Uncontrolled Keywords: Energy, wastewater, COD, ammonia
Subjects: F100 Chemistry
H800 Chemical, Process and Energy Engineering
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: Elena Carlaw
Date Deposited: 27 Nov 2020 11:12
Last Modified: 27 Nov 2020 11:16
URI: http://nrl.northumbria.ac.uk/id/eprint/44856

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