Title

Disinfection By-Products in South East Queensland: Assessing Potential Effects of Transforming Disinfectants in the SEQ Water Grid

Date of this Version

2011

Document Type

Conference Paper

Publication Details

Citation only

Farré, M.J., King, H., Keller, J., Gernjak, W., Knight, N., Watson, K., Shaw, G., Leusch, F.D.L., Sadler, R., Birt, J., Bartkow, M. and Burrell, P. (2011) Disinfection By-Products in South East Queensland: Assessing Potential Effects of Transforming Disinfectants in the SEQ Water Grid. Paper presented at Science Forum and Stakeholder Engagement: Building Linkages, Collaboration and Science Quality, Brisbane, Queensland.

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© Copyright, Urban Water Security Research Alliance, 2011

Abstract

The formation potential of disinfection by-products (DBPs) from chlorination and monochloramination of source water for South East Queensland (SEQ) drinking water was determined. Moreover, the effect on DBP formation of transforming disinfectants in the SEQ Water Grid was simulated at the bench scale. Samples were collected after coagulation and before disinfection at Molendinar, Capalaba and Mt Crosby water treatment plants (WTP). Samples were filtered at the laboratory to simulate sand filtration. Reverse osmosis permeate before disinfection was taken at Tugun desalination plant. DBPs measured were trihalomethanes (THMs), halonitromethanes (HNMs), haloacetonitriles (HANs), haloaldehydes (HAs), haloketones (HKs) and iodo-THMs (I-THMs). In general, the highest concentration of DBPs formed was observed when disinfecting source water.

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This document has been peer reviewed.