Plastic exhaust air scrubber

The air scrubber in horizontal design,

type MAALS, can be integrated into the top section of the extractor as an additional element. The washing principle, utilising a newly developed bell-shaped base, is characterised by particularly high efficiency with very low water and energy consumption.

The washing principle:

The water, which acts as the washing fluid, is distributed across the bell-shaped base by a maintenance-free, low-noise circulation pump. The air extracted from the fume cupboard is passed through this bell-shaped base and, in combination with the washing water, creates a very strong bubbling effect, through which our exhaust air scrubber achieves separation rates of up to 96% of pollutants.

How it works:

The MAALS-type absorption system operates fully automatically and is virtually maintenance-free. The exhaust air scrubber is controlled via a compact programmable logic controller. The washing water is automatically topped up and replenished via a level control system, which also provides start-up and dry-run protection for the pump. The contaminated washing water is discharged via a motorised ball valve with a large, unobstructed cross-section (standard version).

The equipment variants:

The MAALS absorption system is available in several variants:

• Conductivity monitoring
  The electrical conductivity of the water is continuously monitored. The wash water is discharged when a preset limit value is reached.
• pH monitoring
  Discharge occurs when a preset pH value is reached.
• pH regulation
  The wash water is neutralised using a pH dosing system so that it can be discharged into the sewage system at a neutral pH.

The results:

The MAALS absorption system achieves above-average separation efficiency for pollutants. This has been confirmed on multiple occasions by an independent, state-accredited institute.