Custom solutions for sludge

Energy-efficient drying for industrial and sewage sludge

  • Up to 45% subsidized acquisition costs

  • Save up to 75% energy costs

  • 100% planning reliability thanks to premium after-sales service

Modular drying systems in special format

With the customized and modular drying systems of the Drymex® S-Line, we can take local conditions and existing transport systems into account. In contrast to the compact M-Line dryers, the special systems usually have the heat pump module and the drying container set up separately and connected to each other with pipelines. With this technology, roll-off containers or skips, for example, are suitable as drying containers, which, with special adaptations, contribute to safe drying and uncomplicated disposal.

Do you have individual requirements that you would like us to test in advance?

From concept to custom solution
Practical tests in our in-house laboratory

For challenging applications, HARTER develops tailor-made custom solutions. In our technical center, we test your product under realistic conditions, define temperature and humidity windows, optimize cycle times, and document the results. Contact us – we will review your task without obligation and provide a clear recommendation for the next steps.

Contact our experts now +49 8383 9223‑210 or submit the contact form
2000

Drying systems

in over 20 countries stand for our quality

100

Employees

from all areas ensure a high level of vertical integration

+ 35

Years of experience

in the development of innovative drying systems

Your benefits

Sludge quantity
kg/24h		 Water extraction capacity
l/24h*
S3 500 250
S4 1,000 500
S5 1,500 770
S6 2,400 1,200
S7 4,800 2,400
S8 7,200 3,600
S9 9,600 4,800
S10 12,000 6,000

*The maximum water extraction capacity depends on the product moisture and the ambient conditions

Drymex® operates with a closed air system. External climate influences have no effect on temperature and humidity. This ensures constant drying quality, plannable cycle times and high process reliability – all year round.

A wide variety of containers can be used with the S-Line. Classic options include roll-off containers or skips, which are specially adapted for drying applications with a ventilated floor and lid system, but can also be used directly for transporting the dried sludge.
In some cases, a so-called suspended ceiling construction is suitable – a drying container that is installed in the floor between the chamber filter press discharge and the loading container, and in which the corresponding amount of sludge is dried.

The S-Line offers the possibility of a fully automatic drying process in which dust generation is completely reduced. For example, with our multi-function floor, dried material can be conveyed out of the drying system via a conveyor belt and filled directly into big bags with a screw conveyor. All functions are PLC controlled and can be used differently in various programs. Cumbersome transfer with dangerous dust development is thus a thing of the past.
Contact us!

Heat pump-based dehumidification with heat recovery significantly reduces energy consumption. Compared to conventional processes, you reduce operating costs and CO₂ emissions – with consistently high product quality.

The dehumidification performance can be adapted to varying filling levels and different types of sludge via the volume flow control. This ensures that air permeability and degree of drying remain process-reliably within the target range.

The S-Line drying containers are manufactured from 1.4301 stainless steel or galvanized steel, depending on the size and application, to ensure long-lasting production. The Drymex® heat pump modules, which are usually set up separately, are constructed from anodized aluminum profiles. With our knowledge of the composition of your sludge, we adapt the design to the requirements as best as possible for a long-lasting, low-maintenance operation.

For special solutions, the heat pump module and drying container are set up separately. This allows the system to be optimally adapted to spatial conditions – ideal for confined areas, existing hall layouts and subsequent expansions.

In addition to the special solutions of the S-Line, HARTER offers compact container solutions for smaller sludge quantities up to 1.5t / day (see M-Line). For continuous application on a belt dryer, please refer to the B-Line.

The Process

The Drymex® heat pump module of our sludge dryers provides the required process air and is also responsible for the condensation process: We work with extremely dry and therefore unsaturated air and guide it homogeneously through the sludge. This combination of efficient air treatment and appropriate air flow ensures a high-quality drying result.

Interface Drymex® heat pump module / drying container: humid air is extracted from the drying chamber and fed to the dehumidification unit.

Moisture condenses on the fins of the air cooler and drains out of the drying system via the drip tray and condensate drain.

The air heater warms the air to the required process temperature.

The process air fan ensures the necessary air exchange between the Drymex® heat pump module and the drying chamber.

Now, the dry, unsaturated air is guided into the drying chamber. This closes the circuit.

Efficiency that pays off.

Our HARTER drying systems save up to 75% CO₂ and are up to 45% governmentally funded.

Reliable – Competent – Long-term

Service that thinks ahead – for years to come

With the HARTER After-Sales Service, you secure a reliable and efficient drying solution for the long term. Whether it’s maintenance, spare parts supply, or technical adjustments – we support your system throughout its entire life cycle and ensure that it delivers optimal results at all times.

Performance Service

Optimal performance through our “all-round carefree package”

Custom Service

Flexible for changing requirements

Expert Service

Fast assistance in case of failure

Lifetime Service

So that the quality is always right

What our customers say

Not convinced yet? Our customers are thrilled!

“Sometimes it is better to say nothing and let your customers speak for themselves.”
– Regina Mader, Managing Director

“For several decades, we have been using a sludge dryer from Harter in our electroplating shop and are very satisfied with it. The technology and service are reliable and have helped us save a lot of money on disposal.”

Daniel Hutter
Verzinkerei Kriessern AG

“BK Giulini GmbH has been working successfully with Harter GmbH for around 20 years. We are very satisfied with both the dryer technology and the reliability of the complete system. Based on these positive experiences and the very good service, we invested in another drying system of this type in 2023.”

Dimitri Baumbach
ICL Ladenburg / BK Giulini GmbH (ICL Group)

“In our waste incineration plant, we have saved an enormous amount of money by drying our heavy metal-containing hydroxide sludge. The system technology is sustainable and easy to maintain. In retrospect, the investment was a very good decision.”

Stefan Ringmann
KVA Linth
Send us your inquiry now

Fill out the form now and we will get in touch with you as soon as possible.