With immediate effect, the Rittmayer brewery in Upper Franconia is commissioning a mixing and equalization tank and its own wastewater treatment plant, investing almost one million euros in the process. Both the tank and the wastewater treatment plant are central components of a holistic wastewater treatment system in the brewery’s production process and significantly complement the existing ecological and economic measures. In the first step, the mixing and equalization tank is used for wastewater pretreatment in the brewing process, while the wastewater treatment plant takes over so-called anaerobic wastewater treatment.
Both elements make it possible to reduce the organic load in the wastewater by around 80 percent to the level of household wastewater. At the same time, a locally operated gas storage facility is fed by the wastewater treatment plant, supplying biomethane for the combined heat and power plant to generate green electricity and heat for the plant. The brewery is thus continuing its focus on a consistently sustainable production process and taking on a pioneering role for other breweries in the region.
“We are very pleased to be able to further raise our environmental standards in the bottling and brewing process after an extensive building permit process and a corona-related shortage of raw materials or building materials. The ventilated blending and equalization tank, which will go into operation immediately, meets the latest technical as well as the highest ecological standards. The measurement and control technology used ensures automated, process-stable wastewater pretreatment. Our wastewater treatment plant, which is commissioned in parallel, supports the anaerobic wastewater pretreatment in order to biodegrade it in the best possible way. With a biogas production system connected to this, we will be able to generate our own CO₂-neutral electricity with around 612,000 KW/h of gas via the wastewater treatment plant in the future, saving around 137 tons of CO₂.”
- Georg Rittmayer, Managing Director
Ecological milestones
The recently implemented construction measures add to a long history of various ecological milestones already achieved by the brewery itself: for example, regular CO₂ savings of 140 tons per year have been achieved since 2005 with the help of a nitrogen recovery system, and since 2013, around 140,000 liters of heating oil per year have been saved due to a switch to woodchip heating.
Other measures, such as the conversion of electricity procurement from hydropower, the introduction of an energy-saving program using heat storage, and the introduction of its own energy and recyclables cycle (including certified support for regional agriculture with feed from spent grains) have also contributed to the brewery from Hallerndorf being one of the most environmentally friendly breweries in Bavaria for decades.