Construction of plant for purified water reuse

We designed, built and commissioned a reverse osmosis plant for the company Clas in Chiusanico, which consisted of two independent parallel lines that can operate in different configurations.

Reverse osmosis is a technologically advanced process that uses a semi-permeable membrane and hydrostatic pressure to remove solutes and impurities from water.

A reverse osmosis plant consists of a series of membrane modules through which remarkably pure water can be obtained.

The plant was delivered to Clas assembled on a skid and placed inside a prefabricated box so as not to take up any production space. Such a plant solution does not require the customer to stop working.

The two lines can operate one as an alternative to the other or simultaneously, thus doubling the amount of water produced.

The plant is designed to treat 140 m3/day of water leaving the MBR membrane section of the existing water purifier and it allows a recovery of 71%, with conductivity values between 300 and 600 μS/cm. By adding a second reverse osmosis step, water recovery of more than 90% can be achieved.

During normal operation, the plant produces 100 m3/day of osmotic water that is reused within the plant’s production processes.

The strength of these plants lies in their ability to return very high quality water for reuse in the production cycle, reducing waste and supply costs and improving control over process water quality.