In 2024, MM spa upgraded the Milan San Rocco municipal water treatment plant with cloth filters supplied by MITA Water Technologies. Six MSF 32/160 PPC HD stainless-steel filters were installed to improve filtration capacity in parallel with the existing sand filters. The solution provided effective reduction of total suspended solids (TSS), bringing the level to less than 10 mg/l. Reliability, speed of execution, and quality of water treatment.
MM spa, a utility operator in the Province of Milan, undertook a project to upgrade the municipal water filtration section at the Milan San Rocco plant. MM’s stakeholder, an experienced plant engineer, needed an efficient solution to improve the treatment of purified water following a secondary settling process.
The main challenge involved increasing the filtration capacity, in parallel with the existing sand filters, to handle a variable flow rate ranging from 0.5 m³/s (1,800 m³/h) to a maximum of 2.6 m³/s (9,360 m³/h). In addition, the client required that the filters be able to effectively reduce the concentration of total suspended solids (TSS), which ranged from as low as 20 mg/l to as high as 50 mg/l at the inlet.
MITA Water Technologies was selected to supply 6 MSF 32/160 PPC HD model pile cloth filters. These filters were chosen for their advanced technical features, including their construction of AISI 316 L stainless steel, a corrosion-resistant material ideal for water treatment applications. Each filter has 32 discs with a total filtering surface area of 160 m². The HD (Heavy Duty) version of the filters is equipped with enhanced motorization and increased transmission kinematics to ensure long-lasting, high-performance operation, even under heavy load conditions.
The filter installation was designed to operate in parallel with the existing sand filters, optimizing the filtration process and ensuring an SST output of less than 10 mg/l, with full compliance for all samples analyzed. The solution also included the supply of covers, electrical panels, and accessories required for mounting the filters inside concrete tanks.
The results obtained with the installation of MITA Water Technologies’ pile cloth filters have been highly satisfactory. Thanks to its ability to adapt to variable flow rates and the robustness of the installed technology, the plant can now handle a nominal flow rate of 7,920 m³/h and a maximum of 9,360 m³/h without compromising process efficiency.
The success of the project can be attributed mainly to the speed of execution and the quality of the solution proposed by MITA Water Technologies. The experience of the supplier and the proven reliability of the MSF 32/160 PPC HD filters played a key role in the success of the intervention, ensuring full customer satisfaction. The service provided, which included supervision at installation, start-up and testing, further consolidated the result of MITA Water Technologies’ supply for MM spa.
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A solution for high filtration yields and efficient handling and backwashing, with only two pumps for the whole system: the PPC and PPC VM disc filters are for concrete or metal tank, respectively. Versatility and little ancillary work required for operation.
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.
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