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Green energy from municipality bio waste and wastewater sewage sludge treatment plant
Published on 30 March 2019
Hungary
Nyugat-Dunántúl
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About this good practice
The treatment plant has been established at Zalavíz Zrt. company, owned by the local municipality. The treatment plant is similar to a conventional activated sludge system with an anaerobic zone ahead of the aerobic basin but also includes an additional anoxic zone following the anaerobic zone. The installation of an upgrading unit also allowed the diversification of end uses to include vehicle fuel and electricity powers as well. The upgrading plant and refuelling station occupy an area of approximately 500 m2.
First step of the investment was that two sludge putrefies have been built at the waste water treatment field. After it an equipment was developed for vehicle fuel, which makes 99 % biomethane from biogas containing 70 % methane. Thanks to their operation – less quantity and better quality, better utilizing – sewage sludge is available and biogas is also produced as by-product, biogas is primarily for electricity and heating.
First step of the investment was that two sludge putrefies have been built at the waste water treatment field. After it an equipment was developed for vehicle fuel, which makes 99 % biomethane from biogas containing 70 % methane. Thanks to their operation – less quantity and better quality, better utilizing – sewage sludge is available and biogas is also produced as by-product, biogas is primarily for electricity and heating.
Resources needed
The wastewater treatment plant treats approximately 50.000 – 60.000 m3 of surplus activated sludge generated on site and sewage sludge imported from other local wastewater treatment plants from 30 kms.
Evidence of success
Within ten years 2.300 MW coal power plants capacities will drop out from the hydrocarbon-based domestic energy supply system. The government has set up a 14.65% transformations target until 2020, based on renewable energy sources, in which it has been a decisive role of the biomass energy. The average daily biogas production is 1000 – 1500 m3/day, which are used by three ways, as electricity power, heating and vehicle fuel. This technology decreases the CO2 emission surroundings of town.
Potential for learning or transfer
Biogas upgrading and the production of biomethane nowadays is one of the best interesting renewable energy technology, which is unknowing and didn’t spread wide range in the municipalities. It could be implemented anywhere in Europe in all of the regions.
Further information
Website
Good practice owner
You can contact the good practice owner below for more detailed information.
Organisation
Pannon Novum West-Transdanubian Regional Innovation Nonprofit Ltd.
Hungary
Nyugat-Dunántúl
Contact
innovation manager