Issue 1, 2016

Demonstrating organic contaminant removal in an ozone-based water reuse process at full scale

Abstract

The 350 ML per d Eastern Treatment Plant (ETP) tertiary facility produces “Class A” water for the city of Melbourne, Australia, which is used for irrigation, dual reticulation and fire fighting. The ETP process utilizes ozone and biological media filtration as part of the advanced treatment train for secondary treated wastewater. An extensive sampling campaign was carried out to evaluate the removal of hundreds of contaminants of concern through various steps in the treatment train, as well as identify the formation of any byproducts of the treatment process. Degradation of contaminants throughout the treatment was mainly controlled by the ozone process. Chemicals with moderate to high reaction rates with ozone and/or ˙OH radical (10 M−1 s−1kO3 or kO3 < 10 M−1 s−1 and k˙OH ≥ 5 × 109 M−1 s−1) were removed by the tertiary treatment to below the detection limit. However, the advanced treatment train resulted in some contaminants increasing in concentration (i.e. NDMA and desisopropyl atrazine) and other newly forming contaminants, such as trihalomethanes and chloral hydrate. The resulting levels of contaminants of concern remaining in the ETP final effluent were below levels of relevance based on guidelines for reuse in irrigation or discharge to the environment.

Graphical abstract: Demonstrating organic contaminant removal in an ozone-based water reuse process at full scale

Supplementary files

Article information

Article type
Paper
Submitted
07 Aug 2015
Accepted
10 Dec 2015
First published
11 Dec 2015

Environ. Sci.: Water Res. Technol., 2016,2, 213-222

Demonstrating organic contaminant removal in an ozone-based water reuse process at full scale

J. Blackbeard, J. Lloyd, M. Magyar, J. Mieog, K. G. Linden and Y. Lester, Environ. Sci.: Water Res. Technol., 2016, 2, 213 DOI: 10.1039/C5EW00186B

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements