The sewage treatment plant in Burgebrach, Bavaria, Germany, shows how a municipal enterprise can effectively reduce its energy and disposal costs with the help of a biogas plant
At the upcoming IFAT, the world’s leading trade fair for environmental technologies in Munich, Germany, German company WELTEC BIOPOWER will display its technologies on how to utilise organic waste and wastewater to a broad industrial and municipal audience.
A sewage plant in Burgebrach, Bavaria, Germany, has demonstrated how a municipal enterprise can effectively reduce its energy and disposal costs with the help of a biogas plant. For the existing sewage treatment plant, which serves a population of 13,000, WELTEC has added a sludge digestion unit including energetic utilisation of sewage gas in the combined heat and power (CHP) plant.
The facilities went live in the spring of 2016. Since then, the sludge has been stabilised with an anaerobic process in the custom-designed stainless steel tower following the wastewater treatment in a two-stage trickling filter unit.
Thanks to the installation of the digestion unit, any unpleasant odour emissions around the sewage treatment plant have been eliminated. Moreover, the digestion reduces the amount of sludge and enables the energetic utilisation of the digestion gas. The operators also wanted to be able to use all the power and heat generated by the CHP plant for the on-site processes.
“Thanks to our self-supply, we are able to save the electricity costs of about 100,000 kWh/year,” Arne Nath, Head of Wastewater Treatment at SüdWasser GmbH, the operator that has supported the town Burgebrach since 2005.
This special plant benefits greatly from the proven technologies of WELTEC BIOPOWER: Firstly, the modular structure of the stainless-steel plants enables a customer-specific layout. Secondly, such projects draw on the experience that WELTEC has gained in the establishment of more than 300 biogas plants.
Every single plant has a different substrate structure. Regardless of whether sludge, abattoir waste, production leftovers, or supermarket waste is concerned, WELTEC guarantees optimum energetic utilisation of the substrates in all cases, made possible with the help of smart processes and the comprehensive services and supervision by biologists and engineers.