Startseite Products Sewage sludge recycling

Carbotechnik sewage sludge recycling concept

Applications & adavantages

Sustainable sewage sludge recycling for a green future

Carbotechnik focuses on innovative solutions for phosphate recovery from sewage sludge. Our advanced pulse burner enables effective sewage sludge combustion, in which sewage sludge dust is thoroughly burned to produce high-quality phosphate fertilizer.

A key advantage of our self-sufficient systems is the simultaneous combustion of generated gases. This not only efficiently supports the drying process but also feeds excess energy into your own or external grids—ensuring optimal resource utilization for your operations.

Have your sewage sludge tested at our research center with no obligation. Together, we’ll determine whether the mono-incineration of sewage sludge is suitable for your needs and how producing phosphate fertilizer from sewage sludge can reduce your costs.

Download sewage sludge recycling product brochure
Sustainable sewage sludge recycling and phosphorus recovery

Technical details

Sewage sludge recycling: efficient phosphorus recovery

Our sewage sludge recycling process begins with mechanically dried sewage sludge, which is temporarily stored in a silo. With a residual moisture content of less than 10%, the material is ready for the next phase: It is processed into powdered sewage sludge and transferred to a holding tank. From there, it proceeds to our patented pulse burner. Here, the sewage sludge is converted into heat using a waste heat boiler. The energy generated powers the drying process, while excess energy is converted into electricity or used for other processes.

The ash produced during the incineration process can be used directly as a phosphorus fertilizer or for phosphorus recovery. Finally, the flue gas is cleaned in accordance with the 17th Federal Immission Control Ordinance (BImSchV) and safely discharged. This completes the cycle of sustainable sewage sludge recycling.

Phosphorus recycling made easy

At our testing center, we have determined that, under the right conditions, the ash produced after incineration complies with the fertilizer ordinance. This means it can be directly reused and marketed—without costly intermediate steps for the legally required phosphorus recycling.

Since the properties of sewage sludge vary, we’d be happy to test whether your sewage sludge is also suitable for phosphate fertilizer production without additional processes. Simply schedule a no-obligation analysis at our technical center.

How it works

Smart processes in sewage sludge recycling

Experience efficient and reliable combustion technology that delivers real added value. Our pulse burner is designed to ensure a uniform, stable flame and high operational reliability—perfect for burning powdered, gaseous, and liquid fuels. Thanks to the innovative airflow from three air inlets, the outer wall stays cool, which means a long service life and minimal maintenance for your pulse burner.

Benefit from the compact design without refractory lining and eliminate the need for a pilot flame: automatic re-ignition ensures smooth operation. The afterburner chamber increases residence time and optimizes the combustion process, allowing you to reduce emissions and increase efficiency. With rapid ignition—required only at startup—you save valuable time and resources.

Convince yourself

Advantages of our sewage sludge recycling concept

1
Flexibly scalable plant size: our systems adapt to your individual requirements and grow with you
2
Energy-self-sufficient drying process: the process is powered entirely by heat from combustion, maximizing resource utilization
3
High-quality design with low operating costs: robust and efficient construction ensures low operating costs
4
Small footprint: compact design requires minimal space while delivering maximum performance
5
High system availability: our technologies ensure reliable operation with minimal downtime
6
Fully automated operation: automated processes reduce labor requirements and increase efficiency
7
Turnkey plant construction: everything from a single source—for maximum planning reliabilitytiger Anlagenbau: Alles aus einer Hand – für maximale Planungssicherheit
8
In-house testing facility: continuous development ensures state-of-the-art technologies and innovation
9
Production of high-quality, phosphate-containing sewage sludge ash: the recovered ash serves as a first-class fertilizer in accordance with the fertilizer ordinance
Do you have any questions?

We’re happy to help!

+49 8171 9282-6 info@carbotechnik.de