Author(s)

RA.Crowder, A. Nisbet, A. Harrington & R. Freestone

Abstract

Quantification of WwTW UV dose rates for long sea outfalls by means of coastal hydrodynamic modelling RA.Crowder*, A. Nisbet*, A. Harrington^ & R. Freestone^ *Bullen Consultants, UK ^Yorkshire Water, Science and Regulation, UK * Environment Agency, North East Region, UK Abstract Both the EC Bathing Water Directive and the EC Urban Wastewater Treatment Directive have greatly influenced the treatment levels and requirements of Wastewater Treatment Works (WwTW) that have intermittent and continuous discharges to coastal areas. Over the past decade the requirements of these Directives have been taken into account by Yorkshire Waters' Asset Management Plans and 'Coastcare' programme and have resulted in the upgrading and implementation of new WwTW. Coastal hydrodynamic modelling has played a key role in developing appropriate WwTW schemes. Calibrated and validated models have typically been used to model the dispersion of nutrients and viral and bacteri

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