Articles & Case Studies

Regional Waste Recycling is first to install Advetec’s industrial scale Bio-Thermic Digester

Posted: Thursday 30th October 2014

London’s Regional Waste Recycling (RWR) has chosen Advetec Technologies to install a new water treatment system. Central to the system will be Advetec’s first industrial scale, Bio-Thermic Digester that will reduce organic waste from fat traps, septic tanks, filter cakes and municipal collections by 96%.

Regional Waste Recycling, which collects the majority of the liquid waste within the M25 area, treats over 300,000 litres of gully, septic tank, flood and industrially contaminated water and 150 Tonnes of municipal waste daily. After trials of a smaller Bio-Thermic Digester, Advetec, a leading UK specialist in the use of advanced environmental technologies for the treatment of effluent and waste, is supplying and installing a new, industrial scale machine, which will process up to 33 tonnes of organic waste within 72 hours.

John Edwards, director of RWR says: “The smaller machine was regularly turning over 90% of organic waste into clean water and dry powder, so we’re confident that the new, larger machine will cope with the huge volumes of solid sludge/organic waste we receive every day.”

The result of eight years’ development, Advetec’s Bio-Thermic Digester is manufactured in the UK. Unique to Advetec’s approach is its understanding of aerobic bacteria, the bio-stimulant technology used to invigorate and speed up the digestion process, combined with advanced engineering and continuous remote monitoring to ensure an optimal processing environment.

Advetec’s Managing Director Craig Shaw says: “This first UK site will prove that our technology can reduce industrial quantities of contaminated water, fatty deposits and comingled waste by 96% to water and powder. Our technology will meet London’s strict regulatory standards and deal with huge volumes of waste to make the goal of zero waste to landfill achievable.”

From RWR’s Materials Recycling facility black bag waste is shredded, crushed and segregated with the majority of heavy pieces of glass, sand, metal and plastics removed. The waste is then delivered in tankers to Stratford where the tromelled waste is washed to remove more sand, glass, metal and then entered into a centrifuge to separate the waste into solid and liquid. The organic waste then will go via hoppers and augers into the new Bio-Thermic Digester.

Heat from beneath the new container-sized BTD will maintain a controlled temperature and this, together with a regulated air supply and doses of proprietary bio nutriments, will remove moisture and promote oxygenation to reduce hard carbon particulates, fast. Finally residual metal, glass and plastics are removed, while the remaining organics are reduced to a fine, sterile powder.

Instead of typical landfill costs of £80/90 per tonne, RWR’s costs will be around £1.99 per tonne to process on site, offering a typical return on investment within 18 months.

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