Climate and resource protection
Sustainability plays a central role in the production of dairy products. Key factors include the energy consumption of factories and plants, the optimisation of water consumption, wastewater disposal and treatment, and compliance with the directives for plant emissions. These factors are structured by ISO 14001 and 50001 and systematically certified by an accredited company.
Our goal is to drive emissions down further. Because agriculture and the dairy industry produce considerable emissions. DMK has been addressing climate protection intensively since 2012.
We are also striving to meet the ambitious Paris climate protection target of limiting global warming to less than two degrees Celsius with this aim.
We joined the Science Based Target Initiative (SBTi) in December 2021. This organisation examines and validates climate goals industry-wide in line with the UN Paris Agreement’s climate goals.
Reducing water consumption
Water is a key component for production. At our DMK sites, approximately only 1.12 litres of water (2019) is consumed per kilo of raw milk processed. This sets the DMK Group apart from the average achieved by all the dairy operations in Germany – and by a clear margin. This positive trend has continued for several years now and clearly shows how well positioned we are in this area. Of course, the reduction of water consumption has also resulted in wastewater savings.
The savings in water consumption have been made thanks to a variety of individual measures put in place in our production plants.
Making drinking water out of milk? We can do that.
As part of the “B-WaterSmart” initiative, DMK’s Edewecht site is breaking new ground in lowering water consumption.
In the summer of 2020, water became scarce in some German districts. This isn’t the first incident to show us the importance of using resources responsibly. This is why the Oldenburg East-Friesian Water Association (OOWV) and DMK are carrying out a case-study as part of the EU research initiative “B-WaterSmart”. Together, we are looking for possible methods for lowering the consumption of drinking water in specific areas of the economy – or for developing new ways to obtain drinking water.
At the DMK site in Edewecht, the focus is on processing vapours so that for the first time they can replace drinking water. Vapours accumulate in many diaries during the evaporation of milk, for example. The condensates are similar to distilled water, however, they are contaminated with organic impurities.
“By using treated water, we see great potential to reduce the consumption of drinking water and thus conserve groundwater resources,”
Oliver Horstmann, water and environmental protection officer at the Edewecht site
In cooperation with a plant engineer, a suitable pilot facility is due to be developed and operated. The aim of the project is to develop a safe process so that the treated water meets the quality requirements of the Drinking Water Ordinance and can therefore be safely recycled as a replacement for drinking water during processes carried out at the diary. If this ambitious project proves to be possible to implement technically, the process will in future be used with drying at DMK sites.
The “B-WaterSmart” initiative is part of the “Horizon 2020” EU programme and has a budget of 15 million euros, a fifth of which is designated to Germany to fund various project participants. A total of 36 project partners from eight countries will work together over the next four years.
Lower energy consumption
All of DMK’s German sites are certified in accordance with ISO 14001 (Environmental management) and ISO 50001 (Energy management). An Integrated Management System combining quality, occupational health and safety, the environment and energy manages the responsible handling of valuable resources.
The DMK Group’s direct energy consumption came to 1,520,094,616 kWh in 2021 (2020: 1,526,432,378 kWh). DMK’s energy consumption was reduced by more than 15% between 2012 and 2020.
As part of the “Kopernikus Projects for Energy Transition” promoted by the Federal Ministry of Education and Research, DMK’s energy management team is working on ways to make energy more efficient and more beneficial to the grid. In the “SynErgie” sub-project, we are pushing ahead with key model calculations, which provide information about how individual production processes and plants can be included in the energy market in a flexible and profitable way.
We have also been able to use this knowledge in practice in a demonstration model at our plant in Edewecht. We also have a plan to integrate cold storage into the whole model.
In a second funding phase, DMK Group’s energy management team will now spend three more years on optimising the flexibility of cooling systems. To this end, several plants have been reviewed since 2020 to identify potential for optimization.
Cutting carbon dioxide
Our aim is to reduce carbon dioxide emissions.
In 2020, DMK’s emissions came to 8.8 mill. t of CO2 . The average emissions for all farms were around 1.09 kg of CO2 e per kilo of milk – a low footprint for the industry. Over the past few years, when public attention to climate protection increased, DMK has also stepped up its efforts.
We set ourselves the goal in the new sustainability strategy of reducing all greenhouse gas emissions by at least 20%, to 7 million tonnes, by 2030. A further reduction from an already low starting point will be a challenge, but is the right path for us.
Flagship project CO2 -reduction
The emissions in our own DMK production (Scope 1+2) account for only a good 5% of the total CO2 emissions in the dairy value chain. Nevertheless, we also want to cut back in this area. The heat generated by natural gas causes a large share of our Scope 1 emissions. Up to 2022 we have been able to achieve annual reductions of around 4,250 tonnes of CO2 at the Edewecht factory by sitewide use of exhaust heat from heat sources and heat sinks. The site was honoured for this by the German Energy Agency dena in 2020 as a flagship project.
Another option is to operate the biomass heating plant at the Waren site. Here, biomass (wood chips) are used as an alternative to fossil fuels to produce process steam.
The biomass used only consists of natural wood. It comprises wood and wood components produced in agricultural, forestry or horticultural businesses or within the framework of landscape conservation, such as tree and shrub cuttings, thinning wood and waste forest wood. A max amount of fuel from 8100 tons can be used per year.
The wood is burned in the combustion plant. The resulting fumes in the combustion room are used to generate steam via a downstream boiler system. The resulting steam is made available to the production areas as process steam.
The site is thus able to prevent annual emissions of 2500 tons of the greenhouse gas, CO2, when compared with fossil fuels like gas.
Focus on agricultural production
DMK has reported the emissions of its own business activities in milk processing every year for many years now. In the dairy industry, milk production accounts for almost 80% of the emissions. A climate-friendlier dairy industry will therefore depend on the farms. For us, this means continuing to pursue the course we set ourselves years ago in an intelligent way and also tapping new potentials.