Cosmetics

As in other industrial sectors, water is a component required for the product itself, but it is also used for cleaning systems and pipelines. In both cases, the requirements are very high. Whether Purified Water (PW) or Highly Purified Water (HPW), the core of any treatment system is always one or more membrane stages. Other components include pretreatment as well as storage and distribution. Whether all components are thermally sanitized, or whether the proven combination of ozone/UV is better suited for storage and distribution, is determined through an individual needs analysis with the customer.

Typical processes for the pharmaceutical industry:
Filtration, softening, ion exchange, reverse osmosis, electrodialysis, UV irradiation, ozonation, thermal sanitization

The conductivity must be reduced to a value below 1.3 µS/cm. The existing reverse osmosis system cannot achieve this value, so a second, new reverse osmosis unit must be connected. Poor raw water quality, high organic content in the water, and consequently fluctuating values for turbidity, total organic carbon, and spectral absorption coefficient – activated carbon filters are installed upstream of the UV systems. UV systems further eliminate microbiology in the raw water. Carbonic acid in the raw water prevents the required conductivity value from being met – sodium hydroxide is added to bind the free carbonic acid, which is then eliminated via the reverse osmosis membrane.