MASFILT Mass Filters
Masfilt are automatic machines where the treated liquid with low viscosity has to go through a 3m high layer of granular material with thinness from 0,5 to 3mm. The liquid motion happens from the top to the bottom.
The liquid goes through the granular mass with an apparent transit speed of 10-30m/h.
When Masfilt are used as filters, the filtering layer stops on the surface the bigger particles and slows down the motion of the smaller ones, which filter through the mass progressively at a speed from 10 to 1000 times lower than the liquid speed.
The particles kept in the filter are removed through back flush washing of the granular mass that can be fluidized with air or gas flow.
One or more of the following parameters can activate the backflush washing:
- pressure difference;
- time passed from the last washing;
- quantity of filtered fluid;
- turbidity outflow from the filter.
The height and the type of filtering granular masses are chosen according to the application purposes.
The most common granular masses are:
- spheroidal quartzite;
- activated carbon;
- calcium carbonate;