Safe and sustainable treatment of wastewater from hardening plants
Reliable treatment of saline process water from quenching and cleaning processes
During the heat treatment of metals – especially during hardening and tempering – components are exposed to high thermal stresses. In addition to oils or aqueous solutions, saline media are also used for quenching. During the subsequent cleaning of the workpieces, highly contaminated rinse water is produced, which contains considerable amounts of hardening salt, oil, or metal particles.
With our MKR ET evaporator series, these complex wastewater streams can be treated safely, efficiently, and in a resource-conserving manner, while even recovering valuable salts. – and even recover valuable salts.
Sustainability meets cost-effectiveness
Salts that are carried out of the bath with the workpieces often end up unused in the wastewater. This leads to rising operating costs due to the need for continuous re-dosing. With a suitable evaporator solution, these losses can be minimized and the hardening salt can be recovered for reuse – sorted by type and in a usable concentration.
At the same time, the recovered water meets the requirements for reuse or discharge , depending on process requirements.
MKR solution: Customized evaporator systems
Our experienced application team develops an individual plant concept for each customer based on:
- Analysis of the wastewater
- Process requirements
- Space and energy conditions on site
- Potential for reuse of water and salt
Our evaporator plants operate continuously and fully automatically – perfect for robust use in the hardening shop.
Your advantages at a glance:
Recovery of valuable hardening salt
Reduction of wastewater volume by up to 98%
Lower disposal and operating costs
Easy introduction of purified water possible
Modular system design, individually customizable
Reliable technology – designed for continuous industrial use
Areas of application
Typical wastewater types in heat treatment
- Discharged hardening salt baths
- Saline rinsing water from cleaning
- Combined oil/salt-water mixtures from quenching processes
Optimize processes efficiently and sustainably
Do you want to make your heat treatment processes more sustainable while saving costs?
MKR offers you the expertise and technology for a future-proof wastewater solution – with a focus on resource conservation, process reliability, and cost-effectiveness .
Frequently asked questions
Our vaporization systems
Maximum energy efficiency through mechanical vapor compression: Our fully automatic evaporators consume only 35 Wh/liter. Recover hygienized distillate of the highest quality for direct reuse in your production.
Our ultrafiltration systems
Our UC series uses purely mechanical ultrafiltration to separate particles, oils, and emulsions—completely without chemicals. Extend the service life of your cleaning baths many times over and ensure the consistently high quality of your process fluids.
