Sustainability Report 2016 / 2017
➲ Water / Wastewater Werner & Mertz – Mainz draws untreated water mainly from its own well and to a lesser extent from the City of Mainz public water supply. Well water is used in the geothermal energy system for the administration building for heating and cooling purposes. Most of that water is later demin eralized by means of gravel filters and reverse osmosis (RO) systems for chemical production and is thus used twice. Some of the well water (39 percent in 2015) is used in Production to cool containers and heat exchangers and is neither chemically nor physically treated. With the installation of new plate heat exchangers, we were able to reduce the amount of water used for cooling of processes by 28 percent from 2012 to 2015 despite an increase in production output. The increase in total water use up to 2013 is attributed to cooling water needs, particularly additional use in the geothermal system for the new ad- ministration building and for increased production. By optimizing manage- ment of the geothermal system, we were able to reduce water consumption even further. In pursuit of the goal of reducing finished goods inventory, production of small lots was increased. Because this type of production requires more fre- quent material change-overs and rinsing cycles, the amount of treated water and water pollution increased. Mostly through an amended production se- quence and optimized rinsing plans, the amount of wastewater has been re- duced significantly since 2013. Furthermore, rinse water has been collected separately and properly disposed of since 2014. Consequently, wastewater pollution declined considerably. Despite the increase in quantity and num- ber of pieces in 2015, we were able to reduce the waste per kilogram and per piece by further optimizing rinsing plans and production sequences. No limits were set for wastewater pollution parameters COD (Chemical Oxy- gen Demand) and BOD (Biochemical Oxygen Demand). 50 “ Sustainable development brings many concrete benefits to the environment and humans and that ’ s why we have been imple menting these projects for years. Developed in compliance with the highest quality stan dards, the ingredients for all Frosch products fulfill strict environmental requirements. A good example is our ecological raspberry dishwashing gel. Its ingredients are known for their rapid biodegradability. Product packaging is made from recycled (PET) material and every empty bottle can be re- used. ” Barbara Chrzastowska Managing Director of Werner & Mertz Delta Polska Sp. z o.o. Environmental Statement · Mainz site
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