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Abrasive washout

Clever solutions for recycling and cleaning water and abrasive

Abrasive deslurry for waterjet cutting systems

A sustainable and cost-saving investment

Whoever says ‘abrasive waterjet cutting‘ should also say ‘abrasive desludging’.

When cutting with abrasive sand at high performance, a not to be underestimated amount of waste material is produced whose disposal can quickly become a challenge.

Particularly in a multi-shift cutting operation, the need for clever and efficient solutions for separating water and abrasive arises here.

As part of the STM modular system, we offer an additional module system for abrasive flushing in the abrasive cutting process.

The STM BasicClean and STM OneClean abrasive rinsing systems take over fully automated cleaning of the water-abrasive mixture during and after the cutting process.

The advantages cannot be denied:

With the STM OneClean modules, water and abrasive can not only be separated, but also cleaned to a large extent and reused for the cutting process. This sustainably reduces operating costs and also promotes environmental awareness, which is playing an increasingly important role in the industry.

The STM OneClean as well as OneClean+ are systems for abrasive application based on the modular principle. This is because the abrasive rinsing modules can be individually combined and supplemented here.

The STM BasicClean and STM BasicClean+, a suitable entry-level model, provide the entry-level in the field of abrasive desludging. This abrasive removal system is the economical entry into efficient abrasive removal for waterjet cutting systems and offers a fully automatic, space-saving abrasive removal system for collecting the settled abrasive sand.

Expandable with pressure bag filter

High-performance pumps are used to pump the water-abrasive mixture out of the cutting basin. By integrating a hydrofilter, the process water is treated so that it can be fed into the sewer via the pressure bag filter.

Level control of the cutting basin

To meet all cutting requirements, the abrasive rinsing system is available with three different water basins – depending on the size of the waterjet cutting system. This ensures easy raising and lowering of the water level in the cutting basin.

OneClean & OneClean+

Modular system for reprocessing and cleaning

Reduce operational costs and increase profits. STM OneClean/OneClean+, the modular all-round systems for recycling and cleaning abrasive and water, enables you to operate your waterjet cutting system even more sustainably.

The STM basic idea of organically and modularly adapting waterjet cutting systems to the customer’s requirements in order to cut even more economically and efficiently is evident in all aspects of the OneClean system. The plant can be put into operation with a small investment and expanded at any time as needed.

Four interrelated modules allow you to customize the system specifically to your own requirements. All modules of the OneClean system consist without exception of high-quality brand components co-developed by STM. Solid aluminum construction throughout ensures maximum wear resistance and load capacity.

OneClean modules

The modules of the OneClean abrasive rinsing system can be individually combined and supplemented – according to your requirements. Thanks to the modern process visualization with touch display, the operator is informed about all processes at a glance.

STM OneClean System

Module 1 – Hydrofilter

The OneClean hydrofilter is the heart of the STM OneClean modular system. The module uses a highly wear-resistant coated electric pump to convey the water-abrasive mixture from the cutting basin and separates the used abrasive from the process water.

The hydrofilter switches on automatically when cutting with abrasive and switches off again after the cutting process at the end of a short follow-up time. It separates abrasive from the process water into a BigBag. The collection container with the BigBag can be pulled out of the holding device by means of a lift truck.

Module 2 – Pressure bag filter

The pressure bag filter additionally cleans the wastewater before it is discharged into the sewer.

For the cutting itself, depending on the high-pressure pump capacity, approx. 100 – 300 liters of water per hour fed to the pressure bag filter. The pressure bag filter can be integrated into the OneClean system or used as a “standalone” solution.

Module 3 – Water treatment

Before installing an STM system, the water values are analyzed and compared to the specially developed stability index. High pressure pump manufacturers recommend appropriate treatment of the water in case of deviations.

In water treatment, a dosing pump adds a water additive in minute, precisely dosed quantities to the supply water of the high-pressure pump, bringing it into balance. The advantages are longer service lives for high-pressure seals and water nozzles.

Module 4 – Water circulation system

The water circulation system cleans the process water so thoroughly that it can be fed back into the high-pressure pump without hesitation. The separation limit of less than 1 µm is achieved with the ultrafiltration used.

Upstream is a cascade of settling clarifiers and filters that are automatically flushed and monitored by PLC. A water treatment completes the cleaning step. When using the water circulation system, only the water that is lost through evaporation needs to be replaced.

Advantages OneClean & OneClean+

Weighing system & display

The hydrofilter separates the process water from the cutting basin from the used abrasive and separates it into a BigBag. Disposal is thus quick, easy and possible without interrupting the cutting process. The collection container with the BigBag can be pulled cleanly out of the holding device by means of a lift truck or forklift. The integrated display shows when the BigBag needs to be replaced by means of a weighing sensor with traffic light level indicator.

Flocculator

The OneClean Flocculator can be used to bind heavy metals, metals or glass fiber reinforced plastics. The installed reaction module in combination with a lamella separator can filter the process water, for example when working with alloys or copper materials, to prepare it for wastewater discharge or for the water circulation system. The flocculator as a problem material pusher is characterized above all by low operational costs due to its sophisticated system.

Specifications OneClean & OneClean+

  • 1-stage settling tank with high-performance pumps, efficient double cyclones for rapid separation of the process water from the abrasive sand
  • Removable collection container with weighing system
  • Level basin for regulating the water level in the cutting basin
  • Control for automatic switching on and off linked to the cutting process
  • Special ceramic-coated, long-life, high-performance pumps
  • Piping and PLC with display
  • Submersible pressure pump as pumping/lifting station for discharging the water into the canal
  • Uniform size across all variants
  • Length x width x height: 2,600 x 1,200 x 2,270 mm
  • Tare weight: approx. 450 kg
  • Pressure bag filter for additional filtration before sewer discharge
  • Upstream coarse particle filter: filters coarse particles from the cutting basin as a preliminary stage to protect the high-performance pumps
  • “OneClean+” variant with an additional double cyclone and two additional pumps
  • Flocculator

OneClean+ product video

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BasicClean & BasicClean+

Automatic, space-saving abrasive rinsing system with BigBag

The STM BasicClean and STM BasicClean+ abrasive dispensing systems provide you with an economical introduction to efficient abrasive rinsing for waterjet cutting systems.

The used abrasive is flushed out of the cutting basin with the automatic abrasive flushing system. A ceramic-coated high-performance pump sucks the water-abrasive mixture out of the cutting basin via the suction filter. Subsequently, the abrasive settles in a BigBag, which is filled approx. 2 t weighs, off. The second high-performance pump in turn conveys the process water separated from the abrasive back into the cutting basin. The control takes place automatically via a PLC. The automatic abrasive rinsing system switches on automatically when cutting with abrasive sand and switches off again after the cutting process with a follow-up time. When the BigBag is full, they are lifted out of the settling tank to dry and replaced by an empty BigBag.

Specifications BasicClean & BasicClean+

  • 1-stage settling tank with high-performance pumps, efficient cyclone for rapid separation of the process water from the abrasive sand
  • Stilling basin (available in three sizes, 250, 500 or 750 liters, depending on the size of the waterjet cutting system and the level control of the cutting basin)
  • Control for automatic switching on and off linked to the cutting process
  • Special ceramic-coated, long-life, high-performance pumps
  • Piping and PLC
  • Length (depending on level basin): 2,405 mm (250 liters) / 2,960 mm (500 liters) / 3,525 mm (750 liters)
  • Width x height: 1.202 x 1.750 mm
  • Tare weight: approx. 300 kg
  • Upstream coarse particle filter: filters coarse particles from the cutting basin as a preliminary stage to protect the high-performance pumps
  • “BasicClean+” variant with additional hydrocyclone and two additional pumps for double rinsing capacity
  • Pressure bag filter as pumping/lifting station for additional filtration before sewer discharge
  • Submersible pressure pump as pumping/lifting station for discharging the water into the canal

Advantages BasicClean & BasicClean+

Cost-effective and highly efficient

When it comes to the pure output of the abrasive cutting material mixture, i.e. the separation of the process water from the abrasive sand, this system is not only a cost-effective alternative. Rather, the use of an efficient cyclone enables rapid separation of the process water from the abrasive sand.

Space saving & compact

With a compact installation size, the abrasive rinsing system is particularly suitable when there is little space available for the entire waterjet cutting system.

Product video BasicClean & BasicClean+

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