Membrane filtration is also used to treat paint waste water. Pigments can be effectively concentrated via ultrafiltration, producing clean filtrate. In some instances, pigments can even be recovered from the concentrate.
One application of nanofiltration is the recovery of tensides from degreasing baths. The tensides are concentrated by this method and can be returned to the degreasing bath in order to conserve resources.
Industrial-scale reverse osmosis is primarily used to produce deionized (DI) water, which is required in a large number of industrial processes. Reverse osmosis is also employed for treating boiler feed water and seawater.
Membrane processes are also used to treat waste water in advance of physical/chemical treatment methods. A combination of different membrane processes can be used to treat more highly contaminated waste water, such as residues from biogas plants or printing ink waste water.
Eisenmann operates test plants for waste water treatment. We use them not only to optimize or develop our own products but also to resolve problems for our customers or for trials at the customer site. Talk to us!