Full Description

This slide presentation outlines a project where, in 2004, the Regional Municipality of Waterloo (RMOW) shut down its Greenbrook Water Treatment Plant when 1,4-dioxane was found in well supply up to285 ppb. Associated Engineering was hired to conduct aTreatability Study that included aLiterature Review,Bench-Scale Study, anda Pilot-Scale Study. Objectives of the Pilot-Scale Tests included:demonstrate 1,4-dioxane destruction with 3 advanced oxidation processes (AOPs) andtheir suitability at Greenbrook:UV / Hsub2/subOsub2/sub;Osub3/sub / Hsub2/subOsub2/sub;UV / TiOsub2/sub;Osub3/sub dosing control (Osub3/sub / Hsub2/subOsub2/sub only);monitor bromate formation, if any; confirm improvement with upstreamfiltration;examine level of Fe / Mn removalthrough AOP; and,determine Hsub2/subOsub2/sub residual for futurequenching considerations. Raw water quality considerations and pilot process train are outlined along with the pilot study summary that includes: filtration processconfirmed Fe/Mn removal; minimal improvement for downstream AOP;1,4-Dioxane removal and byproductformation; and,all AOPs tested were able to meet low targetdioxane levels ( 10 g/L) without forminghigh levels of bromate.

Product Details

Edition: Vol. - No. Published: 11/01/2006 Number of Pages: 24File Size: 1 file , 2.6 MB