What is ISO 21939 ‑ 1 - Express energy consumption of industrial wastewater treatment about?
ISO 21939 ‑ 1 discusses a method to calculate and express energy consumption of industrial wastewater treatment. ISO 21939 ‑ 1 sets out the general principles for, and provides guidance on, the quantitative characterization of the energy consumed by industrial biological wastewater treatment systems.
ISO 21939 ‑