EVA mini combines two innovative thermochemical processes through which water, energy and fertilizers can be recovered from sewage sludge, reducing up to 95% the residual waste to be disposed of. The technology produces renewable energy making the plants energy neutral. It recovers more than 85% of the water contained by sewage sludge, along with nutrients like phosphorus, exploitable as renewable fertilizers. It can be applied to the wastewater treatment plant, to even treat digested sludge, perfectly integrating with existing infrastructures.