n e h l s e n

Treatment of Hazardous Waste

Treatment of Hazardous Waste

Hazardous waste can easily become a danger to our health and the environment. We therefore collect waste, such as used oil and bilge water from ships, emulsions from the metalworking industry and old paints and their contaminated packaging material, to treat and recycle it appropriately. Such treatment plants render hazardous materials harmless and at the same time generate valuable products.

Chemical - Physical Treatment Plant

Chemical-physical treatment plants deal with liquid wastes. The various treatment techno logies enable the separation of oil and water, the cleaning of oil, the neutralisation of water and the dewatering of sludge. At the end of the processes, plant residues are either landfilled or treated thermally. Nehlsen operates plants of this kind in places such as Bremen (Germany) and Jradou (Tunisia). The Jradou treatment complex also includes a landfill site for hazardous waste.

Cryogenic Separation

To be able to re-use contaminated packaging, Nehlsen has developed a technology that can separate harmful residues, such as chemicals or oil, from raw materials like metal and plastic. The core process takes place at a temperature below -120 °C, rendering the contaminants brittle and ready for separation from the metal or plastic material. Our cryogenic plant can produce secondary raw materials with purity levels of up to 99%, which are traded under the product names of CryoTall (metals) and CryoPlast (plastics).

Service Industry

Work Process


Storage and Shredding

Shredding of the waste materials and then storage in area ready for the next stage.



The next stage is to make the shredded materials as tender and brittle as possible.



Cleaning is the next stage of the process.



Shredding of the waste materials and then storage in area ready for the next stage.

Go To Top