Skip to content
Customer Case

Stena Recycling Skarvik

At Stena Recycling's facility in Skarvik, Gothenburg, Helios Innovations implemented a unit to purify 8,000 m³ of heavily contaminated water where conventional treatment methods were insufficient, with a solution that reduces waste volume 20 times.

Gothenburg, Sweden

Stena Recycling
Challenge

Tank wash water at the facility contained a mixture of oil residues, heavy metals, PFAS and other hazardous substances which made conventional treatment processes insufficient. An efficient and flexible solution was needed to ensure that emission levels were kept within permitted limits.

Solution

Advanced process control enables the facility to handle a wide spectrum of contaminants with maintained operational reliability through continuous monitoring.

Stena Recycling

8,000 m³

contaminated water to treat

x20

waste volume reduction

24 m³/day

treatment capacity

2024

production start

Results

What We Achieved

20x Less Waste

From 8,000 m³ of contaminated water down to just 400 m³ of concentrate sent for destruction — a 20-fold reduction in waste volume.

Consistent Compliance

Continuous sampling ensures that the treatment process consistently keeps discharge levels below regulatory limits.

Reliable Operation

Automated alarm systems and continuous monitoring ensure minimal maintenance and high operational reliability.

Looking Ahead

A Long-Term Partnership

The agreement between Stena Recycling and Helios Innovations spans five years, during which the plant will also be used to treat incoming water from Stena Recycling’s customers.

This makes it an important addition to the company’s treatment capacity and strengthens sustainability in the handling of hazardous liquid waste across the region.

Contact us

Get in touch for more information about how we can help you reduce the amount of liquid waste and your CO₂ emissions.

Get in touch

Tell us what brings you here — we'll respond within one business day.

What would you like to talk about?