Output amounts of suspended solids less than 10 mg/l, small footprint compared to other tertiary filtration solutions, minimal energy use-these are the winning features of MITA’s free-fiber cloth filters installed at the Storo sewage treatment plant.
The Autonomous Province of Trento – Purification Agency is a public agency that manages the wastewater treatment service in the province of Trento. The Storo (Province of Trento, Italy) plant is one of the main wastewater treatment plants in the province.
In 2011, the Storo plant underwent an upgrade of the finishing part of the tertiary treatment: in this context, MITA Water Technologies S.r.l. contributed to the construction of the cloth filtration section.
The objective was to remove suspended solids that may leak from the secondary settling and those formed in the phosphorus post-precipitation section. The expected value of total suspended solids (TSS) for discharge to surface water body was less than 10 mg/l.
The amount of total suspended solids at the inlet was less than 40 mg/l. Water flow rate per hour: 1,000 m3/h.
MITA Water Technologies proposed the installation of three cloth disk filters, model MSF 8/40 PEC. The total filter surface area is 120 m2, enabling the expected value for the TSS parameter to be achieved.
The upgrading of the cloth filtration section of the Storo plant achieved a very significant set of objectives.
With these free-fiber filtration systems, we get to serve medium to large sewage treatment plants with minimal floor space requirements. Not only that. In the PEC and PEC VM disc filters, backwashing with sequentially driven pumps provides the machine with operational continuity in water treatment, consequently avoiding the need to provide a back-up unit.
In this area, contractors and engineering firms contacted by municipalities face a number of challenges: knowledge of regulations, managing costs, and selecting cost-effective solutions. MITA Water Technologies can support them with its efficient and easy-to-manage solutions.
It is one of the largest tertiary filtration systems in Europe: the MITA supply for the vast Cuma water treatment plant near Naples, having a treatment capacity of 1,200,000 population equivalents. The goal of the project was to improve the plant's purification performance.
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The civil sewage treatment plant in San Martino di Castrozza, Trentino, has also been expanded with a pile cloth filtration section.
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The large public sewage treatment plant in Sant'Antonino Ticino, Varese province, needed further expansion and deepening of the tertiary treatment section: MITA Water Technologies supplied 12 ultra-high-efficiency cloth disk filters.
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