On the back of its continued growth, DELA GmbH opened a new secondary raw materials centre in the Dorsten/Marl industrial estate in September 2011. The fourth site operated by DELA is situated centrally in the north of the Ruhr region and is linked directly to one of Europe's best developed traffic and waterway infrastructure systems: an excellent starting point for logistics and sales within Europe.
The core equipment at the operating site in Dorsten consists of a rotary drum distillation system – with post-combustion and dedicated exhaust gas cleaning – and a vacuum mixer. Different flows of waste are treated here using innovative, low-emission technologies to ensure that the waste is processed in an environmentally compatible manner. This particularly concerns industrial waste containing non-ferrous metals or mercury produced in the petrochemical and chemical industries, from natural gas exploitation and in chlorine production.
DELA has an in-house developed, patented stabilisation process to convert mercury into non-toxic mercury sulphide that is deployed in Dorsten. The company thereby disposes over the only ready-to-use technology on an industrial scale at this time which can convert highly toxic mercury into a substance able to be stored in a way safe for mankind and the environment and which conforms to the aims of the EU. The process fulfils the prerequisites laid down by the EU directives applicable since 2011 which aim to restrict the worldwide circulation of mercury.
Waste treatment at the Dorsten siteTreatment of contaminated filter materials containing non-ferrous metals or mercury, active carbon, catalysts, industrial sludge, batteries, black powder, soil and construction rubble, treatment (removal of mercury) of fluorescent powder, stabilisation of mercury into mercury sulphide.
System engineering at the Dorsten site
|Rotary kiln||Treatment of (bulk) non-ferrous waste and waste containing mercury|
|Treatment of industrial sludges|
|Vacuum mixer stabilisation metallic mercury||Stabilisation of metallic mercury into mercury sulphide|
|High purity distillation||Production of mercury in various quality grades|