Anaerobic Digestion of Municipal Solid Waste (black bag or mixed waste where no source separated or kerbside recycling is in-place) requires the separation of the organic material (organic or biological fraction) from everything else.
What is a Mechanical Biological Treatment Plant (MBT)?
Most people are able to grasp the concept of Waste Transfer Stations (WTS’). The name says it all, as it is simply where the small loads from the refuse trucks are made up into large “bulk” loads for cost effective transport to the landfill.
But, beyond that there is little public knowledge of MBT.
However, it is one of the waste management technologies which are being increasingly used by the local authority waste disposal contractors to avoid having to ship waste (especially organic waste) out to landfills. That means that there could be quite a lot of MBT facilities built, within the next 10 to 15 years.
“Many Mechanical Biological Treatment Plants are being to be built in the UK”.
Also, here are quite a number in the EU states already, and the Germans and the Austrians are the leaders in introducing them.
In Germany there are about 50 MBT plants, which were built and operating (January 2008), and clearly the local people have no concerns about them, or at least, very few, objections.
MBT Plants are designed for maximum recycling, and usually include a composting and/or an Anaerobic Digestion stage.
They also are intended to make the quality of the much reduced quantity of waste, which is the remaining fraction of municipal solid waste (MSW) which cannot be re-used or recycled much less damaging when the residual quantity eventually arrives at the landfill.
MBT plants are much more popular with the general public than incinerators, as there is no question that an MBT plant operator would not absolutely maximise re-use and recycling of the incoming materials.
We are certain that incinerator operators re-use and recycle to the maximum in accordance with the requirements placed upon them and to the best capability of their equipment, as well.
However, the public and environmental pressure groups don’t always see it that way.
In fairness to those people that run incinerators, though. Once built, they do need to pay-back their initial investment cost. Recycling rate targets are continuously being raised.
This can lead to older incinerators, having been designed for lower recycling rates than currently required, lacking the equipment to comply with the newer higher recycling rates. In such cases, those plants tend to act against raising recycling rates, until they reach end-of-life and are refurbished to cope with the new recycling rate requirements.