Removal of organotins during sewage treatment: a case study

Environmental Technology
N VoulvoulisJohn N Lester

Abstract

Discharge consents for tributyltin (TBT) from wastewater treatment works in the UK are set by the Environment Agency. These values are normally derived from the Environmental Quality Standards for concentrations of TBT in the receiving water, based on the volume of effluent discharged and subsequent dilution within the environment. In this study, a sampling program was designed to monitor concentrations of TBT (and other organotins) in the influent and effluent at each stage of treatment. Sampling was undertaken at 3 hourly intervals, over 24 hours, at 8 locations throughout the works for five days. Organotin concentrations were determined using capillary gas chromatography with flame photometric detection. The results demonstrated that TBT was consistently present in the influent at concentrations of approximately 0.1 microg l(-1). However, a "pulse" of TBT and monobutyltin (MBT) was observed on the third day when the concentration of TBT and MBT in the influent increased to 14 microg l(-1). This "pulse" of TBT and MBT was also observed as the wastewater passed through the unit treatment processes. Concentrations of both compounds were much reduced in the final effluent (TBT 2.5 microg l(-1) and MBT 6.9 microg l(-1)). Over the...Continue Reading

Citations

Oct 27, 2015·Environmental Science and Pollution Research International·E BizkarguenagaA Prieto
Jul 6, 2012·Water Research·Ulrika OlofssonPeter Haglund
Oct 28, 2008·Journal of Environmental Management·Anna Kotrikla
Oct 20, 2006·The Science of the Total Environment·Nikolaos Voulvoulis, John N Lester

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