WETS offers a wide variety of filtration solutions for potable and wastewater applications. WETS has installed or retrofitted hundreds of gravity filtration systems and pressure filter systems for our clients in its over-40 year history, and through that experience has developed proprietary features that enhance filter system performance and result in improved water quality. Whether installing a new system or renovating an existing one, WETS approach to filtration ensures superior performance with low operational cost.
Filtration can be defined as the process whereby suspended and colloidal matter are removed from water when it passes through a suitable medium to produce a product of sparkling clarity.
Filtration of water through sand beds has been used for water purification for thousands of years. The current standard filter for municipal water systems is a dual media filter using crushed anthracite coal and sand on top of a gravel subfill; these filters are sometimes referred to as rapid sand filters.
Gravity Filter:
In a typical gravity filtration system, the water to be treated is fed from the wellhead pump to an elevated aerator, with the water gravity-flowing from the aerator through the filters, which are installed on the ground. The water is pumped from the filters to the GST/hold tank.
Gravity filters can be cylindrical or rectangular. Very large capacity filters are often long rectangular vessels. These rectangular vessels are typically concrete or steel plate, depending on project specifications and local costs/conditions.
|