1. TYPE OF TECHNOLOGY
Wet filtering.

2. RETAINABLE IMPURITIES
Both simple particles and volatile organic compounds, combustion gases (incandescent powders), oil vapours, smoke, etc.

3. RETENTION EFFICIENCY
Filtering efficiency exceeds 96%.

4. EQUIPMENT AND PROCESS DESCRIPTION
The filtering process entails spraying liquid against the stream of air to be filtered.
The interaction between liquid and gas results in the retention of the solid particles of the gas in the liquid. Heavier particles precipitate in the water collector.
The accumulated impure water is filtered by means of a pump and is recirculated into the scrubber. This process unfolds in the first compartment of the scrubber.
When necessary, air containing coarse particles is then passed through a mechanical filter, usually employing synthetic bags, and subsequently exists the scrubber in a clean state. This process unfolds in the second compartment of the scrubber. The scrubber extends horizontally, a fact which gives it an advantage over classical tower scrubbers, both in terms of price and of space occupied, and allows it to be maintained more easily.
Some scrubbers incorporate multiple standardized Venturi tubes, each tube passing a maximum airflow of approx. 2,500 m3/h. Such scrubbers allow for overall flow rates ranging from 2,500 m3/h (using 1 Venturi tube) to 50,000 m3/h (using 20), and greater.

5. APPLICABLE FIELDS
Hydrofilters can be used to filter infested gases, incandescent particles otherwise constituting a fire hazard, etc.