Filter technology for the steel industry
Cooling and process water treatment IN STEEL PRODUCTION
In steelworks, cooling and process water circuits work under extreme loads. Scale, sinter and abrasive particles clog your nozzles and heat exchangers and increase the risk of unplanned production stops.
If differential pressures rise in the circuit, downtimes can cost over €100,000 per hour. Automated filtration stabilizes your processes, reduces maintenance costs and protects your capital-intensive system components in the long term.

Industrial water treatment
In steel production, both process water and cooling water must be continuously filtered and treated.
Different loads require specialized filtration solutions.
In steel production, process water is constantly circulated in rolling mills, continuous casting plants and cooling systems. Scale, metal particles, slag and fines get into the water with direct effects on your systems, nozzles and heat exchangers.
Typical challenges
- High solids load in circulation
- Abrasive metal particles
- Fluctuating particle sizes
- Blockage of nozzles and pipes
- Increased wear of pumps
Without reliable process water filters, the risk of production interruptions and unplanned maintenance intervals increases.
Requirements for industrial process water treatment
Effective industrial process water treatment must:
- continuously handle high volume flows
- be capable of automated backwashing
- work stably even at high temperatures
- be designed to be low-maintenance and robust
Our water filter systems for process water treatment enable efficient solid-liquid filtration and contribute to the stabilization of closed water circuits.
Cooling water plays a central role in temperature control in high-temperature processes in your steel production. Impurities in the cooling water circuit impair heat transfer and can lead to corrosion or deposits in the long term.
Risks of untreated cooling water
- Reduced cooling capacity
- Deposits in heat exchangers
- Increased energy consumption
- Corrosion damage
- Shortened system service life
Targeted cooling water treatment protects critical components and stabilizes thermal processes.
Requirements for cooling water filters in the steel industry
An efficient filter for cooling water must:
- reliably separate fine particles
- process high flow rates
- clean automatically
- be designed for continuous industrial loads
With integrated cooling water treatment, you can reduce downtimes and lower your operating costs in the long term.
Filters for your
Process and cooling water
With industrial filters from DANGO & DIENENTHAL, you can transform your filtration from a reactive protection mechanism to an economical control instrument. You increase your system availability, reduce your operating costs and secure your investments in the long term.
Economic efficiency at a glance
- Up to 2-10 years longer system service life
- Up to 35 % lower maintenance and servicing costs
- Up to 20 % higher system productivity
- Up to 70 % less rinse water consumption
- Up to 35 % less unplanned downtime
WHEN DOES A NEW INVESTMENT MAKE SENSE?
- Modernization of existing systems (e.g. upgrade to high-performance filters)
- New construction projects (e.g. new power plant, new heat pump, new production lines in steelworks)
- Production expansions (increase in throughput volumes)
- Avoiding system failures due to inadequate filtration
- New environmental regulations (e.g. reduction in water consumption, closed-loop systems)
- International expansion (e.g. construction of new plants in growth regions)
MADE FOR MORE
Water filter systems for
steel productions
FILTERAUTOMAT
For heavily contaminated cooling water circuits
with high particle input
- Savings of up to €600,000 due to elimination of additional pre-filtration
- Up to 70 % less flushing water thanks to optimized Venturi nozzle
- Up to 60% less downtime thanks to integrated inspection opening
- Up to 45 % lower operating costs thanks to replaceable filter elements
- Continuous filtration even with heavily fluctuating loads
Ideal for high levels of coarse dirt, scale and highly fluctuating operating conditions.
To the filterautomat
BACKWASH DRUM FILTER HP
Precise protection of sensitive system components
- Up to 35 % less unplanned downtime
- Up to 20 % higher system productivity
- Fine filtration down to 5 μm to protect sensitive components
- High flow rate for primary circuits
- Space-saving integration into existing systems
Ideal for applications where heat exchangers, nozzles and primary circuits require special protection
To the backwash drum filter HP
SEPARATORS
Scale separation and protection against abrasive wear
- Avoidance of production interruptions lasting several weeks
- Extends the service life of mechanical seals by up to 50%
- Reduction of maintenance and overhaul costs by up to 20%
- Reduction in reconditioning and disposal costs
- Up to 30-40 % lower rebuild and installation costs
Ideal for applications with high levels of scale and particles as well as increased wear on pumps and seals, especially for economically relevant material recovery.
To the separators

Proven in demanding
Steel mill environments
Filtration systems are used in primary and secondary circuits in numerous steelworks worldwide,
under extreme conditions and in 24/7 operation.
Contact
Are you planning a modernization, a new system or would you like to increase your filtration performance?
Then contact us via the contact form, post@dds-filter.com or +49 271 401 4123.
We look forward to hearing from you!


