Our economy needs much energy and water. Power generation requires water and water management consumes power. There are considerable energy-water-conflicts.

Water supply, sewerage systems and wastewater treatment consume power. Power consumption of wastewater treatment is high, far too high; it can and should be significantly reduced.

Strategies for energy efficiency improvements begin with basic design and are refined during detailed engineering. Objective is an efficient and integral energy management, making use of potentials for power and heat recovery and reuse.