Patented phosphorus recycling from sewage sludge ash and production of granulated multi-nutrient fertilizers
SERAPLANT GmbH
HaldenslebenNew on Amplifa
About SERAPLANT
SERAPLANT GmbH operates a process in Haldensleben for recovering phosphate from sewage sludge ash, which is protected by European Patent EP3293165. From the recovered phosphate fraction, the company produces granulated multi-nutrient fertilizers for agriculture, horticulture and forestry. The patent-pending SERAPLANT process is intended to make lost nutrients usable, thereby increasing phosphorus efficiency in agriculture and conserving valuable raw material resources. The process already meets the legal requirements that will, from 2029, prescribe the recovery of phosphorus from municipal sewage sludge. After a restructuring under an insolvency plan and the lifting of the insolvency at the turn of 2024/2025, production resumed in early 2025; output of 500 to 1,000 tonnes of fertilizer per month is planned. The current focus is on optimizing plant and process technology.
- Site
- Haldensleben
- Processes
- Phosphorus recycling from sewage sludge ash (patented SERAPLANT process, EP3293165), Production of fertilizer granulate (multi-nutrient fertilizers), Phosphorus recycling from sewage sludge/sewage sludge ash (patented process), Production of multi-nutrient fertilizers from sewage sludge ash
- Materials
- Sewage sludge ash, Sewage sludge ash (sewage sludge incineration ash), Phosphate (recyclate), Magnesium, Trace nutrients (Cu, Zn, Br, Mo)
- Industries
- Agriculture, Horticulture, Forestry, Wastewater disposal/sewage sludge utilization
- 01
Receiving sewage sludge ash
- 02
Phosphorus recovery (patented process)
- 03
Processing with magnesium and trace nutrients
- 04
Granulation
- 05
Fertilizers for agriculture, horticulture and forestry
Raw Materials and Processes
Sewage sludge ash
Raw material for the patented phosphorus recovery process.
Phosphate (recyclate)
Raw material recovered from sewage sludge ash for granulated fertilizers.
Magnesium
Added component in the multi-nutrient fertilizers SERAPLANT P38 and NPS 12-27-8.
Trace nutrients (Cu, Zn, Br, Mo)
Supplementary nutrients in the granulated P fertilizers.
Locations
Haldensleben
DEProduction site (phosphorus fertilizer from sewage sludge ash)
- Materials
- Sewage sludge ash, phosphate (recyclate), magnesium, trace nutrients
- Plant and process technology for phosphorus recovery and granulation
Products
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Phosphorus recycling from sewage sludge ash (patented SERAPLANT process, EP3293165)Engineering | – | – | – | – | Sewage sludge ash |
| Production of fertilizer granulate (multi-nutrient fertilizers)Engineering | – | – | – | – | Phosphate from sewage sludge ash, Magnesium, Trace nutrients (Cu, Zn, Br, Mo) |
Additional services
History
- 2024
Process for producing fertilizer granulate protected by European Patent EP3293165 since 26 June 2024
- 2024/2025
Insolvency was restructured under an insolvency plan; insolvency lifted at the turn of 2024/2025
- 2025
Resumption of production of phosphorus fertilizer (P38) from sewage sludge ash in Haldensleben; plant started up in early January, planned production 500–1,000 t/month