Waste water is produced during penetrant removal of penetrant testing processes. If a biodegradable penetrant supplied by PFINDER is used (and the waste water is not otherwise contaminated), the water concerned can normally be disposed of via the sewage system without any pre-treatment. The official approval required for this procedure has been issued on many occasions in recent years and without exception.

This can eliminate considerable investment and operating costs (LINK à process Optimisation/PT). This approach also constitutes an active contribution to reducing harmful environmental impact:

Testing processes with waste-water treatment systems

  • Active-carbon filtering - high energy consumption during production and the disposal of special waste
  • Ultra-fine filtration - high energy requirement for processing (>20KWh per m³ of waste water)
  • Evaporation - very high energy requirement for processing (>60KWh per m³ of waste water)

Waste-water discharge into the sewage system

  • No recirculation of processing water
  • Partly recycling of rinsing water is possible
  • Moderate increase in water consumption for penetrant removal

When compared directly on the basis of CO2 equivalents, and depending on how the waste water is used, direct discharge into the sewage system is 20 to 60 times more environment-friendly.

We will be pleased to provide you with further details and comparative calculations for application to your own processes.