We have access to state-of-the-art treatment and processing technologies across the UK. This allows us to identify the best options for the Recycling and Recovery of materials for our customers,
We work in an industry where the language is littered with abbreviations and this can often make it harder for customers to know what happens to their waste. The following list shows just a few of the processing technologies that we regularly use:
Anaerobic digestion (AD)+ Click to open
The most common disposal route for Food waste. This is a natural process in which micro-organisms break down biodegradable material in the absence of oxygen It’s a renewable energy source because the process produces a methane and carbon dioxide-rich biogas suitable for energy production. Also, the nutrient-rich solids leftover can be used as fertiliser.
In-vessel composting (IVC)+ Click to open
A common solution for processing green waste (such as leaves and grass cuttings). This is an industrial form of composting biodegradable waste that occurs in an enclosed space. These generally consist of concrete bunkers in which airflow and temperature can be controlled. A dry layer of carbon material is placed on top of the compost which filters odours and maintains moisture.
Open windrow composting + Click to open
A simplistic effective solution for processing garden waste, such as grass cuttings, pruning and leaves in either an open-air environment or within large covered areas where the material can break down in the presence of oxygen. This process cannot be used to process catering or animal waste.
Energy-from-waste (EfW)+ Click to open
This refers to any waste treatment that creates energy in the form of electricity or heat from a waste source. The electricity and heat generated can be provided to local communities/businesses or the national grid. EfW technologies reduce waste that otherwise would be transferred to a “greenhouse gas” emitting landfill.
Refuse-derived fuel (RDF) + Click to open
A good solution for treatment of general waste. In the RDF process you will commonly find that the facility will look to separate fractions of recyclable material through using ballistic separation and manual sorting among other techniques. The remaining material is often shredded and wrapped to produce a homogeneous material which can be used as a substitute to fossil fuels at cement plants and coal fired power stations.
Solid recovered fuel (SRF) + Click to open
This is a very similar process to RDF. The key difference is that SRF tends to contain very low levels of food waste. Because the material is dryer is has a better calorific value and is deemed as a better grade of fuel when a facility is looking for alternatives to fossil fuels.
Gasification+ Click to open
Gasification is an Advanced Thermal Treatment technology that is characterised by the partial oxidation of the feed stock. Oxygen is added, but not in sufficient quantities to allow the substance to be completely oxidised and full combustion to occur. The partial combustion results in the production of ‘Syngas’ which can be used to substitute natural gas, chemicals, fertilisers, transportation fuels and hydrogen.
Materials Recovery Facility (MRF)+ Click to open
This is a facility designed to take recyclable materials and to segregate and grade them for resale, reprocessing and recycling. Using an effective MRF is a vital component to creating a successful circular economy.
Mechanical biological treatment (MBT)+ Click to open
MBT describes several different processes dealing with the biological treatment of waste. It is the combination of both biological and physical processes, which can be arranged in many ways. MBT is an established waste treatment technology in many European countries. The sorting facility initially removes recyclable material leaving the remaining biodegradable material to be treated through processes including RDF, AD or EfW. They are an important piece of infrastructure when dealing with domestic household waste in cities and towns where source segregated recycling rates are poor.
Waste autoclaving+ Click to open
A waste autoclave is commonly used to treat medium and low risk clinical or healthcare waste materials. It’s a form of solid waste treatment that uses heat, steam and pressure of an industrial autoclave in the processing of waste. Waste autoclaves process waste either in batches or in continuous-flow processes. In batch processes, saturated steam is pumped into the autoclave at temperatures around 160 °C.