Glatt Ingenieurtechnik, Weimar, Germany, has successfully commissioned, after a 20-month construction period, the first production plant for phosphate-containing mono and complex fertilisers made from recycled sewage sludge ash.

Seraplant operates the new plant at its headquarters in Haldensleben, Saxony-Anhalt, Germany. Glatt was responsible for the process development and construction of the fluid bed plant. The official commissioning at the end of May was attended by Prof Dr Armin Willingmann, Saxony-Anhalt's minister for economics, science and digitalisation.

Seraplant invested more than 20 million euros in establishing the new production facility with the support of the state of Saxony-Anhalt. More than 20 new jobs have been created in the southern city of Haldensleben. The aim is to produce 60,000t of phosphate fertiliser per year, in compliance with the German fertiliser ordinance (DüMV).

Seraplant and Glatt have jointly developed the highly efficient, patent-pending production process. It bridges the gap in the phosphorus cycle by combining phosphorus recycling with a manufacturing process for new fertiliser, resulting in products that can be marketed straight away. Glatt was contracted by Seraplant to plan and implement the complete plant technology – from raw material delivery to suspension preparation and subsequent fluid bed granulation to filling of the ready-to-use finished fertilisers. The scope of services included process development, overall planning, supply of the entire process equipment and ancillary systems, as well as assembly and commissioning.

No hazardous intermediates, residues or waste gases are produced during the process. The project thus makes a significant contribution to the sustainable and resource-conserving use of phosphorus, a valuable material essential for life. The development partners Glatt and Seraplant are to plan further similar phosphorus recovery projects. www.glatt.com  
 

The Glatt PHOS4green plant, designed in association with Seraplant
 

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