DERC Salotech

How does the MagTrack prevent wastewater contamination during cleaning?

The MagTrack prevents wastewater contamination during cleaning by using a closed waterblasting system with a vacuum dome, known as a blast can, that captures both water and debris directly at the source, preventing any leakage onto the surrounding surface or environment. This sealed approach means that high-pressure water jetting can take place without the uncontrolled spread of contaminated runoff. The sections below unpack how this works in practice, which environments it suits, and why it matters for safety and compliance.

How does wastewater contamination occur during high-pressure water jetting?

During high-pressure water jetting, contamination occurs when water used to strip coatings, remove rust, or dislodge industrial residues mixes with hazardous materials and spreads beyond the cleaning zone. Without containment, this contaminated runoff can migrate across surfaces, drain into soil or waterways, and expose workers and surrounding environments to harmful substances.

The problem is particularly acute in industrial settings where the surfaces being cleaned carry serious contaminants. On oil storage tanks, the water picks up hydrocarbons and sludge. On ship hulls, it lifts old antifouling paint that may contain biocides or heavy metals. In petrochemical plants, the runoff can carry residues from process chemicals. In all these cases, uncontrolled wastewater is not just a housekeeping issue, it is an environmental and occupational health concern.

High-pressure systems operating in the range of 500 to 3000 bar “7,250 to 43,500 PSI” generate significant volumes of water in a short time. At those pressures, water atomises and splashes widely if the jetting head is open to the atmosphere. The faster the cleaning, the greater the volume of contaminated water that needs to be managed. This is why the method of containment matters as much as the cleaning power itself.

How does the MagTrack contain and capture wastewater on-site?

The MagTrack contains and captures wastewater through a closed waterblasting system built around a vacuum dome called a blast can. This sealed unit is mounted directly in front of the crawler and connected to an external vacuum unit. As the high-pressure jets work on the surface, the blast can creates a low-pressure environment that draws water and debris inward rather than allowing them to escape outward.

The result is a genuinely closed loop at the point of cleaning. Water and loosened material are pulled into the vacuum system the moment they leave the jetting nozzles, before they have any chance to spread. The surface left behind is clean and dry, a critical requirement for operations where the next step is painting, coating, or inspection.

The MagTrack Mini, the most compact model in the range, takes this a step further with its 2025 redesign. The updated blast can features an improved vacuum seal using a bellows design and a vacuum vent valve, which significantly reduces the drag of the seal on the surface while maintaining a tight closure. The outcome is a drier result with less vacuum effort required, making the system both more effective at containment and easier to operate remotely.

For surfaces with curvature, the Curved Blast Can variant maintains the same closed-circuit principle while conforming to radii of up to 3 meters “approximately 10 feet”. This ensures that containment is not compromised simply because the surface curves, which is a common challenge on ship hulls and smaller storage tanks.

What types of surfaces and environments is the MagTrack designed for?

The MagTrack is designed for flat and slightly curved steel surfaces in demanding industrial, maritime, and offshore environments. Its magnetic crawler system adheres to ferrous steel structures, allowing it to operate on vertical walls, overhead sections, and inclined surfaces where conventional equipment would be impractical or unsafe.

In practical terms, the MagTrack is well suited to the following applications:

  • Oil and fuel storage tanks, including internal floors and walls
  • Ship hulls, cargo holds, and deck surfaces
  • Offshore oil rig structures and platform steelwork
  • Industrial plant equipment requiring surface preparation before recoating
  • Narrow or confined spaces where manual access is limited

The MagTrack Mini is particularly relevant for tight or restricted areas. Its compact footprint and lightweight build make it transportable and deployable in spaces where a larger crawler simply would not fit, including sections of offshore platforms with restricted access points.

The modular design of the MagTrack system means that the same universal carrier can be fitted with different tools depending on the job. Beyond the blast can for closed waterblasting, the carrier accepts swing arm tools for open blasting, sandblasting attachments, and inspection equipment. This flexibility allows the same platform to serve multiple surface types and cleaning requirements without requiring a completely different machine for each application.

How does the MagTrack help meet environmental and regulatory requirements?

The MagTrack helps meet environmental and regulatory requirements by eliminating uncontrolled wastewater discharge at the source. Because the blast can system collects all water and debris in a closed loop, operators can demonstrate that no contaminated runoff has entered drainage systems, soil, or open water, a standard increasingly demanded by environmental regulators across industrial sectors.

Environmental legislation in many countries now places strict obligations on industrial cleaning operations, particularly when the work involves hazardous coatings, hydrocarbons, or heavy metals. Open waterblasting in these contexts can trigger reporting obligations or outright prohibitions. Closed-circuit systems like the MagTrack blast can are a practical way to comply with these requirements without sacrificing cleaning efficiency.

For operations in sensitive locations, ports, refineries near water sources, or offshore platforms, the ability to collect and properly dispose of all wastewater is not optional. It is a condition of the operating permit. The MagTrack’s vacuum-based containment system supports this by ensuring that what goes onto the surface also comes back off in a controlled, collectable form.

The ReCycleBlaster attachment extends this environmental logic to abrasive blasting. By operating as a closed-circuit vacuum blasting system, it captures spent abrasive and dust rather than releasing them into the atmosphere. This reduces airborne particle exposure, cuts abrasive consumption through recycling, and keeps the work area compliant with air quality standards.

What are the safety benefits of reducing wastewater spread during cleaning?

Reducing wastewater spread during cleaning directly improves safety by eliminating slip hazards, reducing operator exposure to hazardous substances, and keeping the work area controlled and predictable. In high-pressure water jetting operations, uncontrolled water is not just a contamination problem, it is a physical hazard that increases the risk of falls, chemical contact, and secondary injuries.

Industry bodies including SIR (Netherlands), EWJI (Europe), WJA (UK), WJTA (USA), and DIRV (Germany) all recognise the importance of controlled water management as part of safe waterblasting practice. Keeping the cleaning zone dry and contained is a core principle in the safety frameworks these organisations publish and promote.

From a practical standpoint, the benefits of contained cleaning include:

  • Reduced slip risk: Surfaces that remain dry around the cleaning zone are safer for operators and other personnel working nearby.
  • Lower chemical exposure: When contaminated water is captured immediately, operators are less likely to come into contact with hazardous residues through skin or inhalation.
  • Improved visibility: Closed-circuit systems reduce mist and spray in the immediate environment, making it easier for operators to monitor the work and respond to any issues.
  • Remote operation advantage: Because the MagTrack is remotely controlled, operators can manage the cleaning process from a safe distance, reducing their direct exposure to high-pressure jetting hazards altogether.
  • Cleaner handover conditions: A dry, debris-free surface after cleaning means the next team, whether inspectors, painters, or maintenance engineers, can begin their work in a safer, more controlled environment.

The combination of remote operation and closed containment represents a meaningful step forward in reducing the human risk inherent in high-pressure industrial cleaning. Rather than placing an operator directly in the splash zone of a system operating at up to 3000 bar “43,500 PSI”, the MagTrack keeps personnel at a distance while the machine handles the hazardous work.

How the MagTrack addresses wastewater contamination

Wastewater contamination during industrial cleaning is a challenge that touches safety, environmental compliance, and operational quality all at once. The MagTrack system is built to address all three simultaneously through its closed waterblasting approach. Here is what that means in concrete terms:

  • Closed blast can system captures water and debris at the point of jetting, preventing any runoff from spreading across the surface or into the environment
  • Vacuum-sealed containment ensures a clean, dry result after each pass, ready for coating, inspection, or further treatment without additional cleanup
  • Curved Blast Can option extends containment capability to surfaces with radii up to 3 meters “approximately 10 feet”, covering ship hulls and smaller tanks
  • Remote-controlled operation keeps operators away from the high-pressure zone, reducing exposure to both physical hazards and contaminated splash
  • Modular platform adapts to different surface types and cleaning requirements, from oil storage tanks to offshore structures, without sacrificing the containment principle
  • ATEX Zone 2 certification available for use in explosive atmospheres, ensuring the system meets the strictest industrial safety classifications

If wastewater containment is a priority on your next cleaning or surface preparation project, we are ready to help you find the right configuration. Explore the MagTrack system to see the full range of tools and specifications, or get in touch with our team to discuss your specific application and requirements.

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