Activated Charcoal or Quartzite Filters

Features and Operating Principle

Automatic filters
Clarifier filters with automatic backwashing of the filter bed. The vessel can be made of fiberglass (glass-fiber reinforced polyester resin) or carbon steel, with an internal epoxy resin coating suitable for food-grade use, applied after sandblasting to Sa3 grade of the Swedish scale, and an external acid-resistant polyurethane cycle coating, applied after sandblasting as above.
Quartzite filter
The filter bed consists of various layers of selected spheroidal quartzite with differentiated grain sizes, and a layer of anthracite as a filtration aid. The spheroidal shape of the individual quartzite grains, unlike traditional filter beds, does not shatter individual water droplets, facilitating water flow and allowing more effective filtration even at higher flow rates. Multi-layer anthracite-sand filters primarily aim to reduce water turbidity by removing suspended solids. While they have modest use for mains water, they are often the optimal solution for water from wells or surface springs where suspended solids are generally present.
Carbon filter
Activated carbons can be of vegetable or mineral origin and come in granular form; they are contained within a vessel through which the water to be treated is passed. Activated carbon filters perform a chemical-physical adsorbent action on the treated elements and, due to their characteristics, are also used in wastewater for the reduction of COD, color, organic substances, etc. The backwashing of the filtering media occurs automatically at pre-set time intervals. The backwash water, containing the substances previously retained by the filter bed, is conveyed to the drain. The complete automation consists of 4 electrically controlled diaphragm valves, whose opening or closing during the 3 phases (backwash - clarification - service) is regulated by a group of solenoid valves and a timed programmer (24h/7 days), for selecting the time and day when backwashing is required. The reading of the two pressure gauges, located at the filter inlet and outlet, allows for the monitoring of progressive pressure drops due to the filtering action and for appropriately programming or varying the backwash frequency. The Clarifier Filter operates through a natural process using quartzite, which clarifies the water from all suspended substances (traces of rust, soil, microalgae, clay) and everything that makes the water turbid. The Activated Carbon Filter, thanks to the inherent adsorption of activated carbon, allows for the reduction of chlorine (water dechlorinators), surfactants, and other organic compounds, improving the taste, color, and clarity of the water.