Waste Disposal at and out of Sea

As Senior Consultant to TECHNOLOG services GmbH acted as project initiator and is now heavily involved in project management and as design engineer supporting the team to elaborate the various possible floating facilities.

Vessel-based treatment of plastics

TECHNOLOG services GmbH is developing a vessel-based treatment of plastics for the implementation of value chains in less developed countries as well as to avoid plastic input in the environment, particularly in the marine ecosystems. The German Government is providing financial support for this innovative research and development as part of the funding program “Plastic in the Environment” of the Federal Ministry of Education and Research.

KuWert - New ways to reduce plastic waste in the sea

Plastics in the Environment - sources - lowering - solutions

Plastic waste is a major threat to marine ecosystems. Roughly estimated 10 million tonnes of plastic waste end up in the oceans every year and are not mined there for centuries. To prevent this, there must be functioning collection and disposal systems. However, this is not the case in many less developed countries. This is where the joint project KuWert comes in. The researchers develop solutions for the ship-based treatment of plastics. It should help to create new value chains in developing countries and to avoid plastic waste in the oceans.

Broken value chains cause plastic entries

So far, it has not been technically and economically possible to remove plastic waste from the oceans on a large scale. As a result, the amount of plastic waste in marine ecosystems is steadily increasing and could double by 2025. Solutions must therefore be created that reduce the input of plastics into the environment. Land-based waste systems, which are common in industrialized countries, are often lacking in less developed countries due to uncertain political and economic conditions. Plastic usually gets into the environment here and from there, especially in coastal areas, in large quantities into the oceans. There is hardly any commercialization, so the value chains are interrupted. As a result, plastics are on the roadside at a market price of up to € 600 / Mg, although substantial portions of the population live on a dollar a day less.

Plastic waste in Sierra Leone being washed into the sea during the rainy season.

Ship-based treatment as an innovative approach

The KuWert joint project therefore has two objectives: to reduce the input of plastic waste into the environment and the seas while at the same time creating value chains by recycling plastic waste in the participating countries of Sierra Leone, Mauritius and others. At the heart of the concept is a ship-based solution for the collection, treatment and marketing of plastic waste. This is intended to circumvent the difficulties associated with the establishment of a land-based waste management infrastructure. A first draft of a modularly equipped platform already exists. This is to be equipped with the respective required storage areas, conveyor belts, balers, crushers, washing systems, drum screens, magnetic separators, plastic detector sensors, sorting equipment, suitable construction machinery and an extruder for processing recycled plastics.

Cleaner environment and economic benefits

KuWert thus addresses the source of the problem: through new possibilities of utilization on the ground, the concept creates incentives to collect the plastic waste generated in households and the economy so that it does not even get into the environment and the oceans. In addition, valuable secondary raw materials are obtained. These can be turned over to the international recycling market by the mobile nature of waste management, which makes it possible to access ports on international trade routes. The researchers also want to investigate whether it is technically and economically possible to produce and market plastic waste in the destination countries themselves, such as piles, paving stones or roof tiles. By closing value chains, people benefit not only from a cleaner environment, but also from an economic point of view. This creates the precondition that the mobile waste treatment system can be sustainably implemented in the target countries.

Concept of a ship-based platform for the treatment of plastic waste

Image Credits: Salieu Sankoh

Graphics Credits: Christoph Rasewsky

Project Leader

TECHNOLOG services GmbH

Vorsetzen 50

20459 Hamburg

Project Partners

Institute for Energy and Circular Economy at the Hochschule Bremen GmbH (IEKrW), Bremen and Nehlsen GmbH & Co. KG, Bremen

Funded by

Federal Ministry of Education and Research (BMBF) Department Resources and Sustainability, 53170 Bonn