Technologies

Effective Processing and Recycling of Urban Wastewater Sludge


Abstract/Technology Overview

The technology provider is a renewable energy company with a patented technology, providing an alternative solution for turning urban wastewater sludge into pellet as a solid recovered fuel (SRF) with an immediate and significant costs advantage. The company is looking for potential licensing and professional partners in the field of wastewater plant construction and operation.


Technology Features, Specifications and Advantages

The company has developed and launched a technology for treating urban wastewater sludge that is economical in case of small scale production too. This technology is a self-supporting technology for drying and pelletizing urban wastewater sludge, without external need of fossil fuel or any other additional material, except for minimal power electric demand. It uses a negligible external energy input by reusing 30-70% of the generated pellets in the process to run the drying unit. The solution only requires 140 m2 of space, designed to be easily transportable in two 20ft containers. They plan to operate these units 24/6 having an instant cost savings of approx. 20% vs. the lowest cost alternative today.

The technology fits into the ‘energy from waste’ policy of the European Union. It enables wastewater plants to meet the strict EU environmental regulations and at the same time, reduce their sewage sludge treatment costs by 50-75%. In addition the remaining ash, generated by the heating unit could be utilized as an agricultural byproduct.


Potential Applications

Market Opportunity

 Each of the over 40,000 waste water plants in the EU face the same challenge: how to dispose the ever increasing amount of communal sewage sludge (European Waste Code 19 08 05 - sludges from treatment of urban waste water) in ways that satisfy the growing EU environmental regulations while reducing their operating costs. The estimated impact of meeting the new EU environmental regulations is expected to cost over €1.5 billion/year for the wastewater companies alone. To meet these regulatory changes, some larger wastewater utilities turned to building biogas plants with multi million Euro capital outlay and over 20 year payback horizons. Smaller wastewater plants neither have the capital nor the space for biogas plants or local processing and dewatering of the sludge.

Technology on sludge

  • Developed treatment process
  • Result is a biological circulation, where DS accumulation not exists:
  • Food >> Waste Water >> Sewage Sludge >> SRF >> Ash >> Fertilizer >> Plants >> Food
  • Solid Recovered Fuel (SRF, according to CEN/TS 15359 standard)
  • Residual ash is raw material for fertilizer industry

Potential partners:

  • Local governments
  • Wastewater Utilities
  • Biomass power plants
  • Fertilezer producers


Customer Benefit

  • Municipalities can solve the problem of urban wastewater sludge disposal at their plants locally.
  • Machinery has a four-five year payback period which is quite impressive in the sector.- Less investment cost/unit
  • TÜV certified pellet as burning material.
  • The machinery is also generating 4 workplaces per unit.
  • Unique Dewatering: Using the end product to run the drying unit / Quick dewatering as compared to the others / Less operating costs
  • Less land demand- Small size of units: 2t/day unit fits to approximately an area of 140 m2 
  • The waste heat from the equipment will significantly reduce heat energy costs and thereby the operating costs of the wastewater plant.
  • The technology can provide heating and hot water services based on renewable energy generation for municipal buildings.

OVERVIEW
Technology Owner

Balazs Mogyorosi

Company

LC Innoconsult (former Laser Consult Kft.)

Technology Category
  • Energy
  • Biofuels & Biomass
  • Waste-to-Energy
  • Bio Materials
  • Energy Recovery
  • Thermochemical
Technology Status
  • Available for Licensing
Technology Readiness Level
  • TRL 7
Keywords

biowaste, energy, sludge, renewable, alternative, urban, waste