Morris, P.1, Hall, G.2, Aubeuf-Prieur, P.1, 1Kemira, 2Anglian Water Services, UK
(free)A joint investigation between the Environment Agency and Anglian Water identified that the wastewater treatment works at Southwold was causing bacterial contamination of the bathing water.
A Performic Acid (PFA) generator was installed at the works to provide disinfection of the final effluent discharge
From an independent review of the technology commissioned by Anglian Water and carried out during the peak of the 2021 summer tourism
season, the following conclusions may be drawn; A 2X log E.Coli and Intestinal Enterococci reduction target (set by the EA) was being
achieved in dry weather once the correct dose rate had been established. Toxicity sampling at the outfall confirmed that there were no harmful disinfection by-products discharged as a result of the PFA dosing.
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