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CP342  Impact of Using Sewers for Food Waste Disposal Sewerage
Project Appreciation and Objectives

Encouraging the use of food waste grinders to dispose of domestic food waste via the sewers is attracting substantial interest from local authorities as an alternative to landfill disposal. A significant market penetration of these units could result in large quantities of food waste being transported by sewer for treatment by water companies - potentially significantly changing the management of domestic food waste in the UK.

To examine this, and other issues, WRc has engaged with key stakeholders, including Water Companies, Central; Government and Local Government, to establish the National Food Waste Disposal. The planned programme, a series of co-ordinated and shared cost projects, comprises is being funded by DEFRA and UKWIR and includes a series of co-ordinated and shared cost projects. These include technical assessment of the impact of using sewers to dispose of food and otehr mascerated waste and a full sustainability assessment of the alternatives.

The over arching objective for the programme is to provide evidence to support development of fully informed policies that all stakeholders can reach agreement on. Organisations can gain access to the programme as Associate Stakeholders

Programme Benefits

  • UK based evidence on the impact of food waste into the sewerage system.
  • Reduced food waste disposed to landfill.
  • Potential energy renewal.
  • More informed government policy.
  • Support discussions with the public.

Work Programme

  • Review previous international studies and identify similarities with the UK. The studies reviewed will include those on food waste disposal units (FWDs) installed in domestic and commercial kitchens and on macerators as used in hospitals, care homes and some commercial premises prior to discharge to the sewer of wastes other than food waste.
  • Identify knowledge gaps where more investigation is required.
  • Carry out a sustainability study of the different waste disposal routes for food waste.
  • Survey real installations and real systems in the UK to collate information on the impact of FWDs looking at people's behaviour, water use, food waste.
WRc's Portfolio Programme
Summary of the £1.5 million per annum research programme

More details...

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