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We turn waste into energy and fertilizer


construction and operation

of sewage sludge recycling plants for phosphorus recovery


World's first decentralized plant for energy and phosphorus production from sewage sludge


 Sewage association

Unteres Liesingtal, 

and the company

Firma Estet



DenkGrün Recycling GmbH is your contact for plants that use an innovative and new type of PNX process to recycle organic waste in a climate-neutral manner and use it to produce additional energy.​

With these systems, sewage sludge is disposed of cost-efficiently, and the valuable raw material phosphorus – classified as a critical raw material by the European Union – is recovered.

Excess energy can enable high energy efficiency in combination with a photovoltaic system.​ DenkGrün Recycling GmbH is a joint venture between IT and tech entrepreneur Manuel Maiers, scientist and tech entrepreneur Michael Schelch and international entrepreneur and investor John Renos.


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Recycling, phosphorus recovery and energy from sewage sludge

Construction and operation of recycling plant for sewage sludge for phosphorus recovery

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