Concepts of Water Cycle Management for Water Reuse System Design

Abstract

The natural hydrological cycle is not merely a circulation of water among the ocean, atmosphere, land, surface and subsurface water bodies, but also a process of water purification through natural actions. Following the natural principles, the concepts of water cycle management were proposed for designing the urban water and wastewater systems in a new manner by which freshwater supply and use, water reclamation and reuse, and urban water environment are integrated into one water cycle to maximize the efficiency of water application and environmental benefits. This implicates a shift of system design from the conventional paradigm to a new paradigm.