ISBN: 1 84057 859 9
Published Date: 07/10/2018
Sewer blockages due to discharges of fats, oils and greases (FOG) can cause flooding and pollution events. These events are unpleasant for the public, can cause property and environmental damage and can result in the Water and Sewerage Companies (WaSCs) receiving a fine. Further to this, Outcome Delivery Incentives (ODIs) have been set within the water companies in England and Wales to financially motivate, using penalties and rewards, lower occurrences of sewer flooding events (amongst other categories). Through detailed interviews with UK WaSCs, it was found that 13-31% of blockages in the UK are attributed to FOG, that uncertainties lie around WaSC legislative powers, and that the education and enforcement approaches differ. These interviews and the comprehensive literature review and interviews with global water utilities, local authorities and FOG collection/recycling solution providers gave insight into the various approaches employed across the world to control FOG discharges, and the opportunities for FOG collection and recovery in the UK. The FOG strategy, developed as part of this project clearly sets out the path to collect and recover all FOG by 2030, and achieve zero uncontrolled FOG discharges from sewers by 2050.