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Addressing the operational cost challenges of zero-liquid discharge

Introduction

Zero-liquid discharge (ZLD) is a robust wastewater management solution that utilises a sequence of advanced treatment processes to minimise wastewater volumes, increase water recycling, and concentrate waste solids to the greatest extent possible. Numerous different treatment processes and combinations of technologies  can be utilised as part of a ZLD system, but a common denominator among the vast majority of available ZLD options includes a large thermal evaporation stage that is extremely energy-intensive, meaning high and often prohibitive operating costs. This challenge is driving the need for innovative ZLD solutions that offer effective and reliable treatment, and also overcome cost barriers to implementation, energy use, and operation. Read more