Behaviour of selected emerging pollutants in stormwater best management practices (BMPs)

Ellis, John Bryan, Revitt, D. Mike and Lundy, Lian ORCID: https://orcid.org/0000-0003-1155-4132 (2013) Behaviour of selected emerging pollutants in stormwater best management practices (BMPs). In: 8th International Conference on Sustainable Technologies and Strategies in Urban Water Management (NovaTech), 23-27 Jun 2013, Lyon, France. . [Conference or Workshop Item]

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Abstract

A range of emerging pollutants (EPs) are now being considered for regulatory designation as potentially hazardous or as priority substances. These EPs occur ubiquitously in urban receiving waters and have both point and non-point sources. The occurrence and likely sources of four selected EPs (diclofenac, perfluoro-octane sulphonic acid; PFOS, hexabromocyclododecane; HBCD and dichlorvos; DDVP) found in urban surface water discharges are discussed with reference to extreme events and CSO discharges. A unit operating process (UoP) methodology is utilised to evaluate primary BMP removal mechanisms and the susceptibility of the individual EPs to be removed by these processes based on their physico-chemical properties. Despite the prevailing low level concentrations encountered in urban runoff, the methodology provides a scientifically underpinned screening framework to identify the most appropriate BMP controls for the pollutant(s) under consideration. True source control approaches such as direct infiltration, green roofs, rain gardens and porous paving would appear to the moist effective management measures.

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