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Dutch company of REMEX GmbH: HEROS Sluiskil B.V.

Thinking and acting sustainably

HEROS Sluiskil B.V. has been part of the REMEX Group since 2012. Based in the Netherlands, the company focuses on mineral waste management, incinerator bottom ash processing, metal recovery and metal recycling. Its name is synonymous with recycling and recovery, and this is also expressed in the corresponding corporate motto: Think and act sustainably!

Professional waste management on 450,000 m²

HEROS is located in Sluiskil at the 45 hectare HEROS Ecopark Terneuzen, which is located on the canal from Ghent to Terneuzen between the major ports in Rotterdam, Antwerp and the metropolises London and Paris; a large area in which innumerable raw materials and materials are transported by road, waterway or rail. Some raw materials, including ferrous scrap and non-ferrous metals, are transported over long distances to the Far East, where many customers now purchase these raw materials. Its central location, deep water and 500 m long quay ensure excellent connections to Belgium, Germany, Great Britain and Northern France. The transshipment from sea to inland waterway vessels and vice versa is therefore obvious, as is the (temporary) storage of bulk goods in open or closed silos and storage of process water in the tank park.

Washing plant for incinerator bottom ash

On its premises, HEROS operates a washing facility for secondary aggregates made from incinerator bottom ash (IBA). The plant has been especially designed to fulfil the requirements of the Dutch Green Deal. It is optimised to meet the mineral specifications of the Dutch market and focuses on the production of hydro-cleaned bottom ash of the fraction size 0 to 14 mm. Washing incinerator bottom ash mainly serves to improve the environmental characteristics of IBA. An added benefit of the process is the additional recovery of valuable heavy metals. Water required in the operation of the plant is collected at all stages during the process. After physical and chemical treatment, the cleansed water is returned to the production process – thus reducing fresh water consumption to a minimum.

The complex process of hydromechanical cleaning is explained step by step in our film

From rubbish to reuse!

Arie de Bode, Managing Director of HEROS Sluiskil B.V., explains the Dutch recycling activities in relation to incinerator bottom ash. The process starts with the thermal treatment of municipal solid waste in waste incineration plants. This is followed by the processing of the remaining incinerator bottom ash in the HEROS plant. Both the extracted metals and the mineral secondary aggregates are recycled. Watch film

Overview of activities

The main business area of HEROS Sluiskil B.V. is the disposal and processing of bottom ash from Energy-from-Waste (EfW) plants. Every year, up to 700,000 tonnes of incinerator bottom ash is processed and the major part of the recycled raw materials are recovered. The most important products and services of HEROS in short:

Incinerator bottom ash

A special category of construction materials is created at HEROS through the processing of incinerator bottom ash. In the past, secondary aggregates were mainly used in road construction, but new technological developments and intensive research have added further applications, e.g. in the concrete industry. Important clients are the highest Dutch road and water authority (Rijkswaterstaat), Dutch provincial authorities, project developers, concrete and asphalt manufacturers and construction companies.

GRANOVA aggregates

In the Netherlands, construction materials under the GRANOVA brand represent the sustainable use of incinerator bottom ash aggregates in a higher segment of the construction process chain.

The secondary construction material is ideal for replacing sand and gravel in concrete and concrete products. With the introduction of GRANOVA sub-brands, HEROS provides customers with a new sustainable alternative to primary construction materials.

HEROS Non-Ferro

HEROS uses MERIT technology for the increased recovery of non-ferrous metals (non-ferro) in its bottom ash processing plant. The metals are then cleaned of adhering ash in their MTF Metal Treatment Facility. The result is an enriched non-ferrous concentrate of copper, aluminium, chrome, nickel, zinc, brass and precious metals. Furthermore, non-ferrous metals from other REMEX recycling plants are also processed here. After processing, the produced metal concentrates can be smelted directly.


The HEROS site in Sluiskil also houses a unique processing plant for the purification of ferrous metals (ferro), which are recovered during the processing of incinerator bottom ash. The cleansed and copper-free scrap is then reused in various industries, including the steel industry.

Water treatment

On the HEROS site there is a wastewater treatment plant in which both the company's own operational wastewater and wastewater from third parties is treated. An integral part of the plant is the tank terminal. Heavily polluted wastewater can be pre-treated physically and chemically here. The acceptance of wastewater by lorry or ship only takes place after strict control. HEROS focuses on organically contaminated wastewater from industry, the recreation and leisure sector and the waste industry. New investments make it possible to reuse purified water. Ultimately, the result is processed water that is reused by industrial customers, i.e. a closed water cycle.

Storage and transshipment

The quay and storage facilities of HEROS are unique and of utmost importance for all operational processes. Ships with a draft of 8 metres can anchor at HEROS. The quay has a length of 500 m. A 150 m section is used for the service of tankers. In the port area, transshipment from sea to inland waterway vessels and vice versa takes place as well as the temporary storage of bulk material in open or closed silos.

HEROS Sluiskil B.V. is one of the first companies to market IBAA for high-quality application as concrete aggregate. The construction material is produced with the corresponding CE mark and KOMO certificate.

Learn more about HEROS

Further details, current information and contact details of the company can be found on the website of HEROS Sluiskil B.V. Find out more now