The spiral membrane module WD achieves the highest recovery rates.

Acid

In an anodizing process, up to 95% of the free acid can be recovered while less than 5% of the aluminum is returned to the bath (at the appropriate volume flow ratio).

Base

In a bases recovery process, the spiral membrane module WD achieves at least 70% recovery of the free bases.

Metal

Due to the high separation efficiency, valuable metals can also be reused at the highest value level.

Due to the higher efficiency and the recycling of the recovered raw materials, the lifecycle costs are significantly reduced compared to comparable processes:

- No compressed air used (energy saving)

- Less aids required (material savings)

- Less wastewater (saving wastewater costs)

The replacement of the spiral membrane module causes only a fraction of the costs compared to conventional membrane devices for bath care.

Efficient bath care by spiral membrane modules enables an almost complete recovery of free acids/bases/metal salts. These raw materials can be reused at the highest value level. The amount of wastewater is reduced by up to 70 % compared to competitive processes. Subsequent disposal processes will also become more energy and cost efficient, and limit values and environmental guidelines will be easier to comply with.

The Spiral membrane modules provide a huge volume of specific membrane area resulting in a significantely higher metal purge compared to conventional stack membrane devices. Thanks to the modular design, our spiral membrane modules are flexibly configurable, easily scalable and can be integrated cost-effectively. This design also enables high process availability and short maintenance times.