Combustion and co-firing

Given the need to look for energy sources other than conventional ones, the use of fuel from waste, biomass or sewage sludge is a future direction for the heat engineering industry. Every year, more and more waste is produced, creating problems with storage or disposal and the associated costs. The increasing amount of waste has made it necessary to find a new way to manage it efficiently.

Sewage sludge can also be used as an alternative energy source, which is increasing mainly due to the intensive expansion of wastewater collection and treatment infrastructure. The sludge generated by municipal wastewater treatment plants needs to be managed appropriately, and thermal treatment through incineration enables its complete disposal and simultaneous utilization as an energy source. Using this type of fuel brings environmental benefits, contributing to a reduction in the amount of landfilled waste and the need for new areas for landfill sites.

ECOSERV, particularly its founders, can boast of decades of experience in developing grate technology. Initially, these were grates for the combustion of solid fuels. As part of the development of the technology, the range of available feed materials was expanded. Responding to the challenges of sustainable development and market trends toward a closed-loop economy, we emphasize technologies for the thermal conversion of waste and sewage sludge. Our grates have been operating successfully in heat and power plants for many years. Our complete system, dedicated to waste incineration plants, contributes to the decarbonisation of society. As a decentralised waste-to-energy plant, it can thermally utilise different types of waste, such as municipal or production waste, converting it into electricity or heat for local power and district heating networks. Our technology replaces fossil fuels, thus contributing to the energy transition.

We also offer solutions for the thermal utilisation of sewage sludge

Sewage sludge is a solid product of wastewater treatment. It contains concentrates of all valuable substances and pollutants primarily in organically bound form.

Thanks to the combustion technology, sewage sludge from mono-incineration can be used for energy-related purposes. This offers the possibility of facilitating using valuable raw materials, such as phosphorus from the incinerated ashes. By increasing the phosphorus concentration per ash unit, phosphorus recovery can be facilitated. Sewage sludge can be used in direct incineration without further measures once a dry residue of > 40% and a calorific value of >4.5 MJ/kg have been achieved.

Our portfolio offers a wide range of complete sludge mono-incineration plants, from mechanically dewatered sludge to the stack. Units of 1 MWth and up to 10 MWth for decentralised versions can be supplied as standardised systems. Larger-scale plants are specially designed by the customer and executed in cooperation with partners.

Benefits of sludge incineration plants:

  • recycling of phosphorus by incineration, compliance with wastewater sludge regulations
  • particularly low disposal costs
  • low NOX emissions due to controlled incineration temperature
  • compliance with stringent emission standards, based on the existing and proven dry sorption technology
  • separation of heavy metals and other harmful substances from the recyclable ashes
  • optional use of supplementary fuels
  • generation of energy and heat in the form of process steam generation
  • the enrichment of ash with phosphorus, which means facilitating phosphorus recycling through further procedures