Evaluation of Diurnal Dissolved Oxygen as an Indicator of Biodegradable Organic and Nitrogen Pollution in Constructed Wetlands

Author

Dong, C. ; Zhu, W. ; Hua, G.F. ; Huang, J.Y.

Author_Institution

Nat. Eng. Res. Center of Water Resources Efficient Utilization & Eng. Safety, Hohai Univ., Nanjing, China

fYear

2010

fDate

7-9 Nov. 2010

Firstpage

1

Lastpage

3

Abstract

Various chemistry indicators (such as BOD₅, TN and NH₄⁺-N) have been used to identify changes in the performance of constructed wetlands (CW) treating wastewater. However, measurements of biochemical characteristics in CW are laborious. This study aims to investigate whether simple characteristics of diurnal dissolved oxygen are a useful indicator of biodegradable pollution in CW. The variation of DO concentration in substrate water and pollutants removal was examined using CW mesocosm. The results showed that both of DO concentration and oxygen consumption rate for organic matter and nitrogen were exhibited a diurnal periodic variation. The results documented the strong relationship between DO concentrations and simultaneous measurements of pollutants removal. Therefore, daily changes of DO in substrate water are useful indicators for performance of constructed wetlands.

Keywords

oxygen; wastewater treatment; water pollution; CW mesocosm; DO concentration; biodegradable organic indicator; biodegradable pollution; chemistry indicators; constructed wetlands; diurnal dissolved oxygen evaluation; diurnal periodic variation; nitrogen pollution; oxygen consumption rate; pollutants removal; substrate water; Fluctuations; Nitrogen; Oxygen; Pollution measurement; Substrates; Wastewater; Water pollution;

fLanguage

English

Publisher

ieee

Conference_Titel

E-Product E-Service and E-Entertainment (ICEEE), 2010 International Conference on

Conference_Location

Henan

Print_ISBN

978-1-4244-7159-1

Type

conf

DOI

10.1109/ICEEE.2010.5660557

Filename

5660557