A Polish research team has developed a new technology for wastewater treatment. Galvanic wastewater as well as washings wastewater containing heavy metal ions and some anions such as sulphates, chlorides and phosphates are processed through neutralisation, precipitation and filtration. The filtrate solution is a source of useful sodium sulphate obtained through evaporation and crystallisation. The researchers are looking for a partner for technical co-operation.

The most popular galvanic wastewater treatment is its dilution and discharge into a communal sewage system, but useful components of wastewater are completely lost. The treatment developed by a Polish research team is based on neutralisation of galvanic wastewater, and the solution obtained after filtration is a source of useful sodium sulphate. This new treatment procedure does not require technology changes in galvanic plants, but it requires extra processes of evaporation and crystallisation.

Innovative Aspects:
- No new requirements in galvanic technology: a typical recycling line for galvanic technology could be used
- Production of a useful compound i.e. sodium sulphate: comparing favourably to other wastewater treatment technologies, where waste were useless; production of a useful compound is not offered by other available technologies

Main Advantages:
- Decrease of wastewater quantity and quality
- Utilisation of useful components, which up to now were lost in wastewater
- Balanced cost between new investment for crystallisation and profits from sodium sulphate sale

• Anorganic Substances
• Membrane / Filtration technology
• Water Pollution / Treatment
• Recycling, Recovery

• Chemical industry
• Waste management
• Environment protection
• INDUSTRY

• Pollution and Recycling Related
• Chemical and solid material recycling
• Water treatment equipment and waste disposal systems

• Technical Co-operation
• License agreement