| Stannous Chloride For Plumbosolvency Control (CP369)
Treatment to reduce plumbosolvency to meet the permitted concentrations for lead in drinking water generally consists of phosphate dosing, usually as orthophosphoric acid, sodium orthophosphate or monosodium phosphate. Whilst this approach is generally effective, the cost of chemicals has approximately doubled of late and there is concern over the security of supply.
A literature review carried out by WRc looked at possible alternative chemicals for plumbosolvency control. This review identified stannous chloride as a possible practical and economic alternative.
Practical laboratory trials will be carried out at WRc to confirm the performance of stannous chloride for plumbosolvency control under UK conditions on a range of water types. A market survey and an environmental impact assessment will be carried out in parallel to the laboratory trials. This study will take approximately six months and if successful will be followed by pipe-rig and field studies in a second phase of study.
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