2019: The viscose fibre manufacturer Lenzing (Nanjing) Fibers Co Ltd is planning to build a new industrial wastewater treatment plant (26,000 m³/d , 320,000 pe) on the company premises. NWT provided a concept study, the preliminary design and the tender documents with the process steps neutralisation, flocculation, sedimentation, biological treatment and sludge treatment. The process design is specially adapted to the removal of organic substances, sulphate and zinc.