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12 January 2012

Environmental Biotech’s Grease Eradication System is helping McDonald’s take the lead in reducing the environmental impact of the disposal of Fats, Oils and Grease (FOG).

Whilst many companies disposing of FOG tend to adopt reactive drain line management measures, simply paying for pump outs and related costs passed on by water companies, McDonald’s has been working with Environmental Biotech to set the standard in responsible FOG disposal.

Dramatically reducing the number of reactive service calls in the process, it is anticipated that other food service groups will follow suit as the pressure mounts from Water Authorities for caterers and food manufacturers to take a more responsible role in FOG disposal.

After all, it is estimated that 55 % of sewer blockages in the UK result directly from incorrect FOG disposal. Consequently, the UK water industry spends approximately £20 million per year cleaning up and reducing the risk of sewer flooding.

Installing grease traps and reacting to blockages is not enough. Encouraging those responsible to participate in preventative drain line management is desperately needed.

Quite simply, Environmental Biotech’s proactive approach is to solve clients’ problems before they occur.  Preventing a drain backup is far better than dealing with it after it has blocked, overflowed and caused major inconvenience.

When fat hardens; chunks break off and flow down the pipe and can jam in the machinery of underground pumps. That, to use a more digestible metaphor can cause a municipal heart attack, resulting in particularly nasty sewer overflows and expensive call outs.

Following numerous trials, Environmental Biotech has now installed its Grease Eradication System (GES) across the entire McDonald’s UK portfolio; a total 398sites. The GES, relying on bioremediation, eliminates the waste grease and oil, safely and efficiently. Using billions of live vegetative bacteria that feed on FOG, it is automatically introduced into pipe work and drains via a dosing system.

One 22.5-litre dosing system is controlled by a timer mechanism and releases the live vegetative bacteria routinely into the offending areas via plastic stilling chambers.

During each bi-weekly visit, a technician examines the dosing arrangements and replenishes the bacterial solution, which digests the hydrocarbon-based compounds of the FOG, reducing it to carbon dioxide and water. This hugely reduces the amount of FOG entering public sewers; with discharge rates more than 100 mg/l below the standard discharge rate of 300 mg/l.