Responsible water use – The example of BASF AG Ludwigshafen:
BASF places a high priority on the responsible use of water resources. Efficient processes as well as optimised treatment of wastewater minimise emissions into the Rhine. This is achieved by using a combination of process-integrated technologies in the production process (prevent, reduce and reuse), decentralised wastewater pretreatment processes, and downstream wastewater purification in the central treatment plant (end-of-pipe).
The success and constant improvement of this system are illustrated by the example of wastewater generation trends, as well as by the reductions in the pollution loads of TOC, ammonium-nitrogen and EDTA. This article presents the main options and processes available for the reduction of wastewater pollution levels, and provides specific examples of the measures implemented.
One example is provided of each of the following: a process-integrated wastewater prevention measure, a recovery process for potentially recyclable materials, a decentralised wastewater pre-treatment process, and centralised end of pipe treatment in the treatment plant.